Preconsidered Int. No.
By Council Member Sanchez (by request of the Mayor)
A Local Law to amend the administrative code of the city of New York, in relation to conforming the New York city energy conservation code to the New York state energy code with amendments unique to construction in the city, and to repeal section 28-1001.2 of such administrative code relating to such conforming amendments
Be it enacted by the Council as follows:Section 1. Statement of findings and purpose. The New York State Energy Conservation Construction Code (the “New York State Energy Code”) is promulgated by the State Fire Prevention and Building Code Council pursuant to Article 11 of the New York State Energy Law. In accordance with Article 11, the New York City Energy Conservation Code is stricter than the New York State Energy Code. The purpose of this local law is to conform the New York City Energy Conservation Code to recent changes in the New York State Energy Code with local law amendments unique to construction in the city.
§ 2. The definition of “New York state energy code” in section 28-1001.1.1 of the administrative code of the city of New York, as amended by local law number 48 for the year 2020, is amended to read as follows:
NEW YORK STATE ENERGY CODE. The term “New York State Energy Code” means the New York State Energy Conservation Construction Code, constituting part 1240 of title 19 of the New York codes, rules and regulations (19 NYCRR Part 1240), and the publications incorporated by reference in such part, promulgated on [February 12, 2020] October 1, 2025, by the State Fire Prevention and Building Code Council pursuant to Article 11 of the New York State Energy Law.
§ 3. Section 28-1001.2 of the administrative code of the city of New York is REPEALED and a new Section 28-1001.2 is added to read as follows:
§ 28-1001.2 New York city amendments to the New York state energy code. The following New York city amendments to the New York state energy code are hereby adopted as set forth in Sections 28-1001.2.1 and 28-1001.2.2.
§ 28-1001.2.1 New York city amendments to commercial and residential chapters of the New York state energy code.
Chapter 1 [CE] and Chapter 1 [RE]
Delete Chapter C1 and Chapter R1 in their entirety and replace with a new Chapter 1 to read as follows:
CHAPTER 1
ADMINISTRATION
INTRODUCTORY STATEMENT
The New York City Energy Conservation Code (“NYCECC”) is comprised of the publication entitled the 2025 Energy Conservation Construction Code of New York State (“ECCCNYS”) with amendments as enacted into law by the city. Reflecting these amendments to the ECCCNYS, the NYCECC is divided into provisions relevant to commercial buildings and provisions relevant to residential buildings as follows:
1. The provisions of the NYCECC for commercial buildings are reflected in the state publications incorporated by reference in 19 NYCRR Sections 1240.3 and 1240.5, as amended by Sections 28-1001.2.1 and 28-1001.2.2 of the Administrative Code. Such state publications include (i) Chapters 1 [CE], 2 [CE], 3 [CE], 4 [CE], 5 [CE] and 6 [CE] of ECCCNYS; (ii) the New York State-specific version of the publication entitled “Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings,” published by the International Code Council, as incorporated in the ECCCNYS (“2025 NYS ASHRAE 90.1”); and (iii) reference standards incorporated by reference in subdivision (c) of 19 NYCRR Section 1240.3.
2. The provisions of the NYCECC for residential buildings are reflected in the state publications incorporated by reference in 19 NYCRR Section 1240.4, as amended by Sections 28-1001.2.1 of the Administrative Code. Such state publications include (i) Chapters 1 [RE], 2 [RE], 3 [RE], 4 [RE], 5 [RE] 6 [RE] and Appendix RF of the ECCCNYS; and (ii) the referenced standards incorporated by reference in subdivision (b) of 19 NYCRR Section 1240.4.
SECTION ECC 101
SCOPE AND GENERAL REQUIREMENTS
101.1 General. These provisions shall be known and cited as the “New York City Energy Conservation Code,” “NYCECC” or “ECC,” and are referred to herein as “this code.” All section numbers in this code shall be deemed to be preceded by the designation “ECC.” Administration and enforcement of this code shall be in accordance with Title 28 of the Administrative Code.
101.1.1 Titles.
The publication entitled 2025 Energy Conservation Construction Code of New York State shall be known as the “ECCCNYS.”
The New York State-specific version of the publication entitled “Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings,” published by the International Code Council, as incorporated in the ECCCNYS shall be known as “2025 NYS ASHRAE 90.1.” All references in this code to “2025 NYC ASHRAE 90.1” reflect New York City amendments to 2025 NYS ASHRAE 90.1 as amended by Section 28-1001.2.2 of the Administrative Code
The ECCCNYS, as contained in Part 1240 of Title 19 of the New York Codes, Rules and Regulations, along with the New York City amendments to such ECCCNYS shall be known collectively as the “New York City Energy Conservation Code” or “NYCECC.”
101.1.2 References. Where reference is made within this code to the Building Code of New York State, Existing Building Code of New York State, Fire Code of New York State, Fuel Gas Code of New York State, Mechanical Code of New York State, Plumbing Code of New York State, Property Maintenance Code of New York State or Residential Code of New York State, the reference shall be deemed to be to the analogous provision of the New York City Construction Codes (Title 28 of the Administrative Code), the 1968 Building Code (Chapter 1 of Title 27 of the Administrative Code), the New York City Fire Code (Title 29 of the Administrative Code) or the New York City Electrical Code (Chapter 11 of Title 28 of the Administrative Code).
101.2 Scope. This code regulates the design and construction of commercial buildings and residential buildings, as defined in Chapter C2 and Chapter R2 of this code, accessory structures, building sites, and associated systems and equipment, as well as the repair, addition, alteration, or change of occupancy thereto for the use and conservation of energy and clean energy features, including the reduction in greenhouse gas emissions, over the life of each such commercial and residential building.
101.2.1 Statutory limitations. In the event of an addition to, or alteration of, an existing building or building system in an existing building that does not include a change of occupancy, nothing in the this code shall be interpreted to require any unaltered portion of such existing building or building system to comply with this code.
101.2.2 Occupancy classifications. For determination of occupancy classification and use within this code, a comparable occupancy classification shall be made to the New York City Building Code.
101.2.3 Reconciliation with New York State Energy Conservation Construction Code. Whenever any provision of the New York State Energy Conservation Construction Code provides for a more stringent requirement than imposed by this code, the more stringent requirement shall govern.
101.2.4 Other laws. The provisions of this code shall not be deemed to nullify any federal, state or local law, rule or regulation relating to any matter as to which this code does not provide, including but not limited to Articles 320 and 321 of Chapter 3 of Title 28 of the Administrative Code.
101.2.5 Exceptions. This code shall not apply to the alterations of existing buildings set forth in items 1 through 7, provided that the alteration will not increase the energy usage of the building:
1. Storm windows installed over existing fenestration.
2. Glass-only replacements in an existing sash and frame, provided that the U-factor and the solar heat gain coefficient (SHGC) shall be equal to or lower than before the glass replacement.
3. Surface-applied window film installed on existing single-pane fenestration assemblies reducing solar heat gain, provided that the code does not require the glazing or fenestration to be replaced.
4. Reroofing where neither the sheathing nor the insulation is exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
5. Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates a conditioned space from the exterior shall not be removed.
6. An alteration that replaces less than 10 percent of the luminaires in a space, provided that such alteration does not increase the installed interior lighting power.
7. An alteration that replaces only the bulb and ballast within the existing luminaires in a space, provided that such alteration does not increase the installed interior lighting power.
101.3 Intent. This code shall regulate the design and construction of buildings for the use and conservation of energy over the life of each building. This code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve this objective. This code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances. To the fullest extent feasible, use of modern technical methods, devices and improvements that tend to minimize consumption of energy without abridging reasonable requirements for the safety, health and security of the occupants or users of buildings shall be permitted. As far as may be practicable, the improvement of energy conservation construction practices, methods, equipment, materials and techniques shall be encouraged.
Nothing in this section or in any other provision of this code shall be construed to permit the commissioner to approve an application to waive, vary, modify or otherwise alter any provision of this code if such alteration would make such provision less restrictive than a standard or requirement of the ECCCNYS, unless the applicant has obtained approval for such alteration pursuant to Section 11-106 of the New York State Energy Law.
101.4 Applicability. The provisions of this code shall apply to the construction of buildings. Where, in any specific case, different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern. Where there is a conflict between a general requirement and a specific requirement, the specific requirement shall govern.
101.4.1 Mixed occupancy. Where a building, having not more than three stories above grade plane, includes both commercial and residential occupancies, each occupancy shall be separately considered and shall meet the applicable provisions of Chapters C2, C3, C4 and C5 for commercial or the applicable provisions of the 2025 NYC ASHRAE 90.1, and Chapters R2, R3, R4, and R5 for residential.
101.5 Compliance. Commercial buildings shall comply with the provisions of this code applicable to commercial buildings. Residential buildings shall comply with the provisions of this code applicable to residential buildings.
101.5.1 Compliance software. Where chosen by the applicant, compliance with the NYCECC-Commercial Provisions or Residential Provisions, or portion thereof, or, if applicable, with the 2025 NYC ASHRAE 90.1 - can be demonstrated using; either of the following:
1. Computer software that is developed by the United States Department of Energy (such as COMcheck©), specifically for the NYCECC or, if applicable, specifically for the 2025 NYC ASHRAE 90.1, or
2. Other software expressly approved in writing by the New York Secretary of State as acceptable for demonstrating compliance with the NYCECC or, if applicable, for demonstrating compliance with the 2025 NYC ASHRAE 90.1.
101.5.1.1 Other analysis tools. Other performance analysis tools used to document simulated building performance for a specified application or limited scope in accordance with Section C407, are subject to the approval of the building official.
101.5.1.2 Mandatory provisions. The use of the software approach to demonstrate compliance with the commercial provisions, residential provisions, or 2025 NYC ASHRAE 90.1 as established by this code is not a defense for the failure to comply with any mandatory provision of this code. When using the software approach to demonstrate compliance with the provisions of this code, compliance with all applicable mandatory provisions of this code is required.
101.5.2 Demonstration of compliance. For a building project application or applications required to be submitted to the department, the following documentation, as further described in the rules of the department, shall be required in order to demonstrate compliance with this code:
101.5.2.1 Professional statement. Any registered design professional or lead energy professional filing an application or applications for a new building or alteration project shall provide on a signed and sealed drawing a statement of compliance or exemption in accordance with the rules of the department.
101.5.2.2 Energy analysis. For any application that is not exempt from this code and for which a work permit is required in accordance with Section 28-105 of the Administrative Code, an energy analysis shall be provided on a sheet or sheets within the construction drawing set. The energy analysis shall identify the compliance path followed, demonstrate how the design complies with this code and be in a format as prescribed in the rules of the department. The energy analysis shall meet the requirements of this code for the entire project. Projects that utilize trade-offs among disciplines shall use DOE2-based energy modeling programs or other energy-modeling programs as prescribed in the rules of the department and shall be signed and sealed by a lead energy professional.
101.5.2.3 Supporting documentation. For any application that is not exempt from this code and for which a work permit is required in accordance with Section 28-105 of the Administrative Code, supporting documentation shall be required in the approved construction drawings. See Section ECC 103 for further requirements.
SECTION ECC 102
ALTERNATE MATERIALS, METHOD OF CONSTRUCTION, DESIGN OR INSULATING SYSTEMS
102.1 General. This code is not intended to prevent the use of any material, method of construction, design or insulating system not specifically prescribed herein, provided that such material, method of construction, design or insulating system has been approved by the commissioner as (1) meeting the intent of this code, (2) achieving energy savings that are equivalent to or greater than would be achieved using prescribed materials, methods of construction, designs or insulating systems, and (3) meeting the requirements of Article 113 of Chapter 1 of Title 28 of the Administrative Code and the remaining New York City Construction Codes.
Nothing in this section shall be construed to permit the commissioner to approve an application that would waive, vary, modify, or otherwise alter any provision, standard, or requirement of this code if such alteration would make such provision less restrictive than a standard or requirement of the ECCCNYS unless the applicant has obtained approval for such alteration pursuant to Section 11-106 of the New York State Energy Law.
SECTION ECC 103
CONSTRUCTION DOCUMENTS
103.1 General. Construction documents shall be prepared in accordance with the provisions of Chapter 1 of Title 28 of the Administrative Code, the New York City Construction Codes, including this code, and the rules of the department.
103.2 Supporting documentation on construction documents. Supporting documentation shall include those construction documents that demonstrate compliance with this code.
103.2.1 Intent. Supporting documentation shall accomplish the following:
1. Demonstrate conformance of approved drawings to the energy analysis for every element and value of the energy analysis;
2. Demonstrate conformance of approved drawings to other mandatory requirements of this code, including, but not limited to, sealing against air leakage from the building envelope and from ductwork as applicable, insulation of ducts and piping as applicable, mechanical and lighting controls with devices shown and operational narratives for each, and additional requirements as set forth in this section;
3. Identify required progress inspections in accordance with the scope of work, this code, the Administrative Code, the New York City Building Code and the rules of the department; and
4. Comply with other requirements as may be set forth in the rules of the department.
103.2.2 Detailed requirements. Construction documents shall be drawn to scale upon suitable material. Electronic media documents are permitted to be submitted in accordance with department procedures. Construction documents for a project shall be fully coordinated and of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, building systems and equipment as herein governed. Details shall include, but are not limited to, as applicable, the following:
1. Energy Code compliance path.
2. Insulation materials and their R-values.
3. Fenestration U-factors and solar heat gain coefficients (SHGCs).
4. Area-weighted average U-factor and solar heat gain coefficient (SHGC) calculations.
5. Air barrier and air sealing details, including the location of the air barrier.
6. Thermal bridges as identified in Section C402.7.
7. Mechanical system design criteria.
8. Mechanical and service water heating systems and equipment types, sizes and efficiencies.
9. Economizer description.
10. Equipment and system controls.
11. Fan motor horsepower (hp) and controls.
12. Duct sealing, duct and pipe insulation and location.
13. Lighting fixture schedule with wattage and control narrative.
14. Location of daylight zones on floor plans.
15. Location of pathways for routing of raceways or cable from the on-site renewable energy system to the electrical distribution equipment, where provided.
16. Location reserved for inverters, metering equipment and energy storage system (ESS), and a pathway reserved for routing of raceways or conduit from the on-site renewable energy system to the point of interconnection with the electrical service and the ESS, where provided.
17. Location and layout of a designated area for ESS, where provided.
18. Rated energy capacity and rated power capacity of the installed or planned ESS.
19. Location of designated EVSE spaces, EV ready spaces, and EV capable spaces in parking facilities and location of planned off-street loading spaces for future medium or heavy-duty EVSE.
20. Location of pathways for routing of raceways or cable from the enclosure or outlet of EV capable spaces to the electrical distribution equipment.
103.3 Examination of documents. In accordance with Article 104 of Chapter 1 of Title 28 of the Administrative Code, the department shall examine or cause to be examined the accompanying construction documents and shall ascertain by such examinations whether the construction indicated and described is in accordance with the requirements of this code and other pertinent laws, rules and regulations.
103.4 Changes during construction. For changes during construction refer to Section 28-104.3 of the Administrative Code.
SECTION ECC 104
INSPECTIONS
104.1 General. Except as otherwise specifically provided, inspections required by this code or by the department during the progress of work may be performed on behalf of the owner by an approved agency. All inspections shall be performed at the sole cost and expense of the owner. Refer to Article 116 of Chapter 1 of Title 28 of the Administrative Code for additional provisions relating to inspections. In addition to any inspections otherwise required by this code or the rules of the department, the following inspections shall be required:
1. Progress inspections. Progress inspections shall be performed in accordance with the rules of the department.
2. Final inspection. Refer to Article 116 of Chapter 1 of Title 28 of the Administrative Code and the rules of the department.
3. Issuance of Certificate of Compliance. Refer to Section 28-116.4.1 of the Administrative Code.
The requirements of this section shall not prohibit the operation of any heating equipment or appliances installed to replace existing heating equipment or appliances serving an occupied portion of a structure provided that a request for inspection of such heating equipment or appliances has been filed with the department not more than 48 hours after such replacement work is completed, and before any portion of such equipment or appliances is concealed by any permanent portion of the structure.
104.1.1 Approved agencies. Refer to Article 114 of Chapter 1 of Title 28 of the Administrative Code and the rules of the department.
104.1.2 Inspection of prefabricated construction assemblies. Prior to the issuance of a work permit for a prefabricated construction assembly having concealed mechanical work, the department shall require the submittal of an evaluation report by the manufacturer or approved agency on each prefabricated construction assembly, indicating the complete details of the mechanical system, including a description of the system and its components, the basis upon which the system is being evaluated for energy use, test results and similar information, and other data as necessary for the commissioner to determine conformance to this code.
104.1.2.1 Test and inspection records. Required test and inspection records shall be made available to the commissioner at all times during the fabrication of the mechanical system and the erection of the building; or such records as the commissioner designates shall be filed.
104.2 Testing. Envelope, heating, ventilating, air conditioning, service water heating, lighting and electrical systems shall be tested as required in this code and in accordance with Sections 104.2.1 through 104.2.3. Except as otherwise required in this code or in the rules of the department, tests shall be made by the permit holder and witnessed by an approved agency.
104.2.1 New, altered, extended, renovated or repaired systems. New envelope, heating, ventilating, air conditioning, service water heating, lighting and electrical installations or systems, and parts of existing systems that have been altered, extended, renovated or repaired, shall be tested as prescribed herein or in the rules of the department to disclose leaks and defects.
104.2.2 Apparatus, instruments, material and labor for tests. Apparatus, instruments, material and labor required for testing an envelope, heating, ventilating, air conditioning, service water heating, lighting or electrical installation or system, or part thereof, shall be furnished by the permit holder.
104.2.3 Reinspection and testing. Where any work or installation does not pass an initial test or inspection, the necessary corrections shall be made so as to achieve compliance with the New York City Construction Codes, including this code. The work or installation shall then be reinspected or retested by the approved agency.
104.3 Sign-off of completed work. In addition to the requirements of Article 116 of Chapter 1 of Title 28 of the Administrative Code, Section 103.4 of this code and other requirements for sign-off, the project team shall either certify that construction does not differ from the last approved energy analysis or provide a whole-project as-built energy analysis and supporting documents, signed and sealed, for approval prior to sign-off. The as-built energy analysis and supporting documents shall reflect the materials, equipment and values actually used in the construction of the project, and shall demonstrate compliance of the constructed project with this code. Such signed and sealed documents may be accepted with less than full examination by the department based on the professional certification of the registered design professional.
104.4 Temporary connection. The commissioner shall have the authority to allow the temporary connection of an installation to the sources of energy for the purpose of testing the installation or for use under a temporary certificate of occupancy.
SECTION ECC 105
REFERENCED STANDARDS
105.1 Referenced standards. The standards referenced in Chapters C2, C3, C4, and C5 of this code shall be those that are listed in Chapter C6 of this code, and in the rules of the department and such standards shall be considered part of the requirements of the commercial provisions of this code to the prescribed extent of each such reference. The standards referenced in Chapters R2, R3, R4, and R5, of this code shall be those that are listed in Chapter R6 of this code, and in the rules of the department and such standards shall be considered part of the requirements of the residential provisions of this code to the prescribed extent of each such reference. The standards referenced in Appendix CA of this code shall be those that are listed in Section 12 of Appendix CA of this code, and in the rules of the department and such standards shall be considered part of the requirements of the commercial provisions of this code to the prescribed extent of each such reference. Where differences occur between provisions of this code and the referenced standards, the provisions of this code shall apply. Refer to Article 103 of Chapter 1 of Title 28 of the Administrative Code for additional provisions relating to referenced standards.
CHAPTER C2
DEFINITIONS
SECTION C201
GENERAL
Section C201.3 Words and terms defined in other codes.
Section C201.3 - Revise Section C201.3 to read as follows:
C201.3 Words and terms defined in other codes. Where italicized words and terms are not defined in this code but are defined in the New York City Building Code New York City Fire Code, New York City Fuel Gas Code, New York City Mechanical Code, New York City Plumbing Code, such terms shall have the meanings ascribed to them in those codes.
Section C201.4 Words and terms not defined.
Section C201.4 - Revise Section C201.4 to read as follows:
C201.4 Words and terms not defined. Where words and terms are not italicized or are italicized but not defined in this publication or in the publications listed in Section C201.3, such words and terms shall have the meanings defined in applicable referenced standards, statutes, or regulations or shall have the ordinarily accepted meanings such as the context implies.
Section C202
GENERAL DEFINITIONS
Section C202 - Delete the definitions of “Building Code of New York State,” “Existing Building Code of New York State,” “Fire Code of New York State,” “Fuel Gas Code of New York State,” “Mechanical Code of New York State,” “Plumbing Code of New York State,” ”Property Maintenance Code of New York State,” “Residential Code of New York State,” and “Uniform Code.”
Section C202 - Add the definition of “2025 NYC ASHRAE 90.1” after the definition of “2025 NYS ASHRAE 90.1.” to read as follows:
2025 NYC ASHRAE 90.1. New York City amendments to 2025 NYS ASHRAE 90.1
Section C202 - Add the definition of “Accessory Off-Street Loading Berth” after the definition of “Access (To)” to read as follows:
ACCESSORY OFF-STREET LOADING BERTH. An off-street area that is used for the temporary parking of a commercial vehicle for the loading or unloading of goods or materials.
Section C202 - Add the definition of “Affordable Housing Unit” after the definition of “Air Leakage” to read as follows:
AFFORDABLE HOUSING UNIT. Dwelling units within a multi-unit residential building subject to an agreement with a local, state, or federal governmental entity for the purposes of providing affordable housing in a given locality or region.
Section C202 - Delete the definition of “Approval Or Approved,” “Approved Agency,” after the definition of “Alteration.”
Section C202 - Add the definition of “Alteration Area,” “Approval Or Approved,” “Approved Agency,” after the definition of “Alteration.” to read as follows:
ALTERATION AREA: The enclosed spaces marked on the submittal plans to be impacted by the alteration.
APPROVAL OR APPROVED. See Section 28-101.5 of the Administrative Code
APPROVED AGENCY. See Section 28-101.5 of the Administrative Code.
Section C202 - Delete the definition of “Authority Having Jurisdiction,” after the definition of “Area-Weighted Average.”
Section C202 - Add the definition of “Authority Having Jurisdiction,” after the definition of “Area-Weighted Average.” to read as follows:
AUTHORITY HAVING JURISDICTION. The governmental unit or agency responsible for administration and enforcement of the New York City Building Codes and NYCECC.
Section C202 - Add the definition of “Automobile Parking Lift.” after the definition of “Automatic.” to read as follows:
AUTOMOBILE PARKING LIFT. A mechanical device designed to vertically lift automobiles and store them on a mobile elevated platform for the purpose of parking.
Section C202 - Delete the definition of “Basement,” after the definition of “Automobile Parking Space.”.
Section C202 - Add the definition of “Basement Or Cellar, Energy Code,” after the definition of “Automobile Parking Space.” to read as follows:
BASEMENT OR CELLAR, ENERGY CODE. A story that is not a story above grade plane. See the definition of “Story above grade plane.”
Section C202 - Delete the definition of “Building Entrance,” “Building Official,” after the definition of “Building Commissioning.”
Section C202 - Add the definition of “Building Core/Shell,” “Building Entrance,” “Building Official” after the definition of “Building Commissioning.” to read as follows:
BUILDING CORE/SHELL. A new building permit that only includes base building mechanical systems, water service systems, basic lighting and envelope before tenant fit-out as determined by the by the building official.
BUILDING ENTRANCE. Any doorway, set of doors, revolving door, vestibule, or other form of portal that is ordinarily used to gain access to the building or to exit from the building by its users and occupants. This does not include doors solely used to directly enter mechanical, electrical, and other building utility service equipment rooms.
BUILDING OFFICIAL. The Commissioner of Buildings of the City of New York or his or her duly authorized representative. See Section 28-101.5 of the Administrative Code.
Section C202 - Delete the definition of “Building Thermal Envelope,” after the definition of “Building System.”.
Section C202 - Add the definition of “Building Thermal Envelope,” after the definition of “Building System.” to read as follows:
BUILDING THERMAL ENVELOPE. The exterior walls, floors, slabs, ceilings, roofs, fenestration and any other building element assemblies (above and below grade) that enclose conditioned space or provide a boundary between conditioned space and unconditioned space.
Section C202 - Delete the definition of “Chi-Factor (Χ-Factor),” after the definition of “Character-Defining Features.”.
Section C202 - Add the definition of “Chi-Factor (Χ-Factor),” after the definition of “Character-Defining Features.” to read as follows:
CHI-FACTOR (χ-FACTOR). See “Thermal Bridge”.
Section C202 - Add the definition of “Clear Field Thermal Bridge,” “Clear Field U-Factor,” after the definition of “Clean Water Pump.” to read as follows:
CLEAR FIELD THERMAL BRIDGE. See “Thermal Bridge”.
CLEAR FIELD U-FACTOR. See “Thermal Bridge”.
Section C202 - Add the definition of “Commissioner,” “Commissioning Plan,” after the definition of “Commercial Building.” to read as follows:
COMMISSIONER. The commissioner of buildings of the city of New York, or his or her duly authorized representative.(See “Authority Having Jurisdiction” and “Building official”).
COMMISSIONING PLAN. See Section C408.2.1, Commissioning plan.
Section C202 - Add the definition of “Electric Vehicle (EV),” “Electric Vehicle Capable Space (EV Capable Space),” “Electric Vehicle Direct Current Fast Charging Space (EV DCFC SPACE),” “Electric Vehicle Ready Space (EV READY SPACE),” “Electric Vehicle Supply Equipment (EVSE),” “Electric Vehicle Supply Equipment Installed Space (EVSE SPACE),” after the definition of “Economizer, Water.” to read as follows:
ELECTRIC VEHICLE (EV). An automotive-type vehicle for on-road use, such as passenger automobiles, buses, trucks, vans, neighborhood electric vehicles, and electric motorcycles, primarily powered by an electric motor that draws current from a building electrical service, EVSE, a rechargeable storage battery, a fuel cell, a photovoltaic array, or another source of electric current. Plug-in hybrid electric vehicles are electric vehicles having a second source of motive power. Off-road, self-propelled electric mobile equipment, such as industrial trucks, hoists, lifts, transports, golf carts, airline ground support equipment, tractors, boats and the like, are not considered electric vehicles.
ELECTRIC VEHICLE CAPABLE SPACE (EV CAPABLE SPACE). An automobile parking space that is provided with electrical infrastructure, such as, but not limited to, raceways, cables, enclosures, electrical capacity, and other electrical distribution equipment space, necessary for connection to EVSE.
ELECTRIC VEHICLE DIRECT CURRENT FAST CHARGING SPACE (EV DCFC SPACE). An automobile parking space that is provided with EVSE, capable of transferring power between the premises wiring and the electric vehicle by converting alternating current to high-power direct current.
ELECTRIC VEHICLE READY SPACE (EV READY SPACE). An automobile parking space that is provided with a branch circuit and receptacle for connection to EVSE.
ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE). Equipment for plug-in power transfer including the ungrounded, grounded and equipment grounding conductors, and the electric vehicle connectors, attachment plugs, personal protection system and all other fittings, devices, power outlets or apparatus installed specifically for the purpose of transferring energy between the premises wiring and the electric vehicle.
ELECTRIC VEHICLE SUPPLY EQUIPMENT INSTALLED SPACE (EVSE SPACE). An automobile parking space where operational EVSE has been installed.
Section C202 - Delete the definition of “Energy Code,” after the definition of “Energy Analysis.”.
Section C202 - Add the definition of “Energy Code,” after the definition of “Energy Analysis.” to read as follows:
ENERGY CODE. The New York City Energy Conservation Code
Section C202 - Add the definition of “Energy Management System,” after the definition of “Energy Cost.” to read as follows:
ENERGY MANAGEMENT SYSTEM. A system that manages electrical power demand and is comprised of monitor(s), communications equipment, controller(s), timer(s), and other applicable devices.
Section C202 - Delete the definition of “Fenestration,” after the definition of “Fault Detection and Diagnostics (FDD) System.”
Section C202 - Add the definition of “Fenestration,” after the definition of “Fault Detection and Diagnostics (FDD) System.” to read as follows:
FENESTRATION. Products classified as either skylights or vertical fenestration.
Skylights. Glass units or other transparent or translucent glazing material installed at a slope of less than 60 degrees (1.05 rad) from horizontal, including unit skylights, tubular daylighting devices and glazing materials in solariums, sunrooms, roofs, greenhouses and sloped walls. A skylight includes the glazing assembly plus perimeter framing components.
Vertical fenestration. Windows units that are fixed or operable, doors that are more than half glazed, glazed block and combination opaque and glazed doors composed of glass or other transparent or translucent glazing materials and installed at a slope of not less than 60 degrees (1.05 rad) from horizontal.
Section C202 - Add the definition of “Grade, Energy Finished,” “Grade Plane, Energy,” after the definition of “General Lighting.” to read as follows:
GRADE, ENERGY FINISHED. The final top surface of lawns, walks, driveways, areaways or other non-vertical surfaces where the surface meets the foundation, slab edge or exterior wall of a building.
GRADE PLANE, ENERGY. A reference plane representing the average of finished ground level adjoining the building at exterior walls. Where the finished ground level slopes away from the exterior walls, the reference plane shall be established by the lowest points within the area between the building and the lot line or, where the lot line is more than 6 feet (1829 mm) from the building, between the building and a point 6 feet (1829 mm) from the building
Section C202 - Delete the definition of “HVAC Total System Performance Ratio (HVAC TSPR),” after the definition of “Humidistatic Controls.”
Section C202 - Add the definition of “HVAC Total System Performance Ratio (HVAC TSPR),” after the definition of “Humidistatic Controls.” to read as follows:
HVAC TOTAL SYSTEM PERFORMANCE RATIO (HVAC TSPR). The ratio of the sum of a building’s annual heating and cooling load in thousands of Btus to the sum of annual site energy consumption of the building HVAC systems in thousands of BTU.
Section C202 - Add the definition of “Integrated Seasonal Coefficient Of Performance(ISCOP),” “INTEGRATED SEASONAL MOISTURE REMOVAL EFFICIENCY (ISMRE),” after the definition of “Integrated Part Load Value (IPLV)” to read as follows:
INTEGRATED SEASONAL COEFFICIENT OF PERFORMANCE (ISCOP). A seasonal efficiency number that is a combined value based on the formula listed in AHRI Standard 920 of the two COP values for the heating season of a DX-DOAS unit water or air source heat pump, expressed in W/W.
INTEGRATED SEASONAL MOISTURE REMOVAL EFFICIENCY (ISMRE). A seasonal efficiency number that is a combined value based on the formula listed in AHRI Standard 920 of the four dehumidification moisture removal efficiency (MRE) ratings required for DX-DOAS units, expressed in lb of moisture/kWh.
Section C202 - Delete the definition of “Labeled,” after the definition of “Isolation Devices.”.
Section C202 - Add the definition of “Labeled,” after the definition of “Isolation Devices.” to read as follows:
LABELED. See Section 28-101.5 of the Administrative Code.
Section C202 - Add the definition of “Lead Energy Professional,” after the definition of “Large-Diameter Ceiling Fan.” to read as follows:
LEAD ENERGY PROFESSIONAL. The registered design professional who signs and seals the energy analysis for an entire project. Such individual may be the same registered design professional who signs and seals the design drawings for the same project.
Section C202 - Add the definition of “Linear Thermal Bridge,” after the definition of “Liquid Fuel.” to read as follows:
LINEAR THERMAL BRIDGE. See “Thermal Bridge”.
Section C202 - Delete the definition of “Listed,” after the definition of “Liner System (Ls).”.
Section C202 - Add the definition of “Listed,” after the definition of “Liner System (Ls).” to read as follows:
LISTED. See Section 28-101.5 of the Administrative Code.
Section C202 - Delete the definition of “Market Value,” after the definition of “Manual.”.
Section C202 - Add the definition of “Moisture Removal Efficiency (MRE),” after the definition of “Manual.” to read as follows:
MOISTURE REMOVAL EFFICIENCY (MRE). A ratio of the moisture removal capacity in pounds of moisture per hour to the power input values in kilowatts at any given set of standard rating conditions expressed in lb of moisture/kWh.
Section C202 - Add the definitions of “Overall U-FACTOR,” after the definition of “Opaque Door.” to read as follows:
OVERALL U-FACTOR. See “Thermal Bridge”.
Section C202 - Add the definitions of “Point Thermal Bridge,” after the definition of “Physical Renewable Energy Power Purchase Agreement.” to read as follows:
POINT THERMAL BRIDGE. See “Thermal Bridge”.
Section C202 - Add the definitions of “Pre-Engineered Metal Building,” “Professional Certification,” “Project,” after the definition of “Process Application.” to read as follows:
PRE-ENGINEERED METAL BUILDING. A pre-engineered metal building (PEMB) is a structure where the steel components-primary framing, secondary framing, and cladding-are designed and manufactured in a factory according to specific project requirements and then shipped to the construction site for assembly.
PROFESSIONAL CERTIFICATION. See Section 28-101.5 of the Administrative Code.
PROJECT. A design and construction undertaking comprised of work related to one or more buildings and the site improvements. A project is represented by one or more plan/work applications, including construction documents compiled in accordance with Section 107 of the New York City Building Code, that relate either to the construction of a new building or buildings or to the demolition or alteration of an existing building or buildings. Applications for a project may have different registered design professionals and different job numbers, and may result in the issuance of one or more permits.
Section C202 - Delete the definition of “PSI-FACTOR (ψ-FACTOR),” after the definition of “Proposed Design.”.
Section C202 - Add the definition of “PSI-FACTOR (ψ-FACTOR),” after the definition of “Proposed Design.” to read as follows:
PSI-FACTOR (ψ-FACTOR). See “Thermal Bridge”.
Section C202 - Delete the definitions of “Standard Reference Design,” after the definition of “Solar Heat Gain Coefficient (SHGC).”.
Section C202 - Add the definition of “Spandrel Panel,” after the definition of “Solar Heat Gain Coefficient (SHGC).” to read as follows:
SPANDREL PANEL. An opaque assembly within a fenestration framing system in a wall that is part of the building thermal envelope. Such panels are considered to be a portion of the opaque thermal envelope assembly.
Section C202 - Delete the definition of “Substantial Improvement,” after the definition of “Storefront.”.
Section C202 - Add the definitions of “Story,” “Story Above Grade Plane,” “Semiheated Space,” “Substantial Energy Alteration,” after the definition of “Storefront.” to read as follows:
STORY. The portion of a building included between the upper surface of a floor and the upper surface of the floor or roof next above. See the definitions of “Basement or Cellar, Energy Code and “Grade plane, Energy Code.” A story is measured as the vertical distance from top to top of two successive tiers of beams or finished floor surfaces and, for the topmost story, from the top of the floor finish to the top of the ceiling joists or, where there is not a ceiling, to the top of the roof rafters.
STORY ABOVE GRADE PLANE. Any story having its finished floor surface entirely above grade plane, or in which the finished surface of the floor next above is:
1. More than 6 feet (1829 mm) above average grade plane; or
2. More than 12 feet (3658 mm) above the finished ground level at any point.
SEMIHEATED SPACE. As applied to section C408, an enclosed space within a building that is heated by a heating system with an output capacity greater than or equal to 3.4 Btu/h × ft2 (10 W/m2) of floor area but is not a conditioned space.
SUBSTANTIAL ENERGY ALTERATION. An alteration that includes replacement of two or more of the following:
1. HVAC equipment or systems that account for more than 50 percent of the capacity serving either the heating or cooling loads of the alteration area. This includes HVAC unitary systems, HVAC terminal units, or components of HVAC central heating or cooling equipment. HVAC terminal units, for the purposes of this section, can include VAV boxes, fan-coil units, VRF room units, or water-loop heat pumps;
2. 50 percent or more of the luminaires in the alteration area;
3. 25 percent or more of the surface area of exterior building envelope enclosing the alteration area.
Section C202 - Delete the definition of “Thermal Bridge,” after the definition of “Thermal Block”.
Section C202 - Add the definitions of “Thermal Break Device,” “Thermal Bridge,” “ after the definition of “Thermal Block.” to read as follows:
THERMAL BREAK DEVICE. A pre-manufactured, load-bearing building component composed of multiple materials of differing thermal conductivities (e.g., steel, insulation, fiber-reinforced polymers) designed to structurally connect building elements while reducing thermal bridging. The thermal transmittance (U-value) or equivalent thermal conductivity (λeq) of such elements shall be determined using physical testing in accordance with ASTM C1363 or an approved equivalent calculation method. The calculated performance (U-value or equivalent thermal conductivity) shall include the effects of all embedded components through psi- or chi-value calculation methods.
THERMAL BRIDGE. An element or interface of elements that has higher thermal conductivity than the surrounding building thermal envelope, which creates a path of least resistance for heat transfer.
CHI-FACTOR (χ-FACTOR). The heat loss factor for a single thermal bridge characterized as a point element of a building thermal envelope (Btu/h x °F) [W/K].
CLEAR FIELD THERMAL BRIDGE. Elements of a building envelope assembly creating paths of decreased resistance for heat transfer which repeat at regular intervals, such as metal or wood studs, girts, and purlins.
CLEAR FIELD U-FACTOR. Thermal performance factor that accounts for clear field thermal bridge.
LINEAR THERMAL BRIDGE. a length-based element associated with horizontal, vertical, or diagonal elements that penetrates the insulation in the building thermal envelope and with a length measured along an exterior surface of the building thermal envelope, such as balconies, parapet-, roof-, floor-, or fenestration intersections, and shelf angles.
OVERALL U-FACTOR. U-factor of above grade walls that includes clear field-, linear-, and point thermal bridges.
POINT THERMAL BRIDGE. An element that penetrates the insulation in the building thermal envelope, such as columns or beams passing through envelope assemblies, attachments, anchors, and connections not defined as clear field- or linear thermal bridges. The cross-sectional area is measured at the external surface of the outermost penetrated insulation layer.
PSI-FACTOR (ψ-FACTOR). The heat loss factor per unit length of a thermal bridge characterized as a linear element of a building thermal envelope (Btu/h x ft x °F) [W/(m x K)].
Section C202 - Delete the definitions of “Wall, Above-Grade,” “Wall, Below-Grade,” after the definition of “Walk-In Freezer”.
Section C202 - Add the definitions of “Wall, Above-Grade,” “Wall, Below-Grade,” after the definition of “Walk-In Freezer” to read as follows:
WALL, ABOVE-GRADE. A wall associated with the building thermal envelope that is more than 15 percent of the total surface area above adjoining grade plane and is on the exterior of the building or any wall that is associated with the building thermal envelope that is not on the exterior of the building. This includes, but is not limited to, areaways below grade, between-floor spandrels, peripheral edges of floors, roof knee walls, dormer walls, gable end walls, walls enclosing a mansard roof, mechanical equipment penetrations and skylight shafts.
WALL, BELOW-GRADE. A wall associated with the basement or first story of the building that is part of the building thermal envelope, has not less than 85 percent of the total surface area below adjoining grade and is on the exterior of the building.
CHAPTER C3
GENERAL REQUIREMENTS
SECTION ECC C301
CLIMATE ZONES
Section C301.1 General.
Section C301.1 - Revise Section C301.1 to read as follows:
C301.1 General. For projects in the City of New York, Climate Zone 4A shall be used in determining the applicable requirements from Chapter C4.
SECTION R303
MATERIALS, SYSTEMS AND EQUIPMENT
Section C303.1.1 Building thermal envelope insulation.
Section C303.1.1 - Revise the Exception to Section C303.1.1 to read as follows:
Exception: For roof insulation installed above the deck, the R-value shall be labeled as required by the material standards specified in New York City Building Code.
Section C303.1.2 Insulation mark installation.
Section C303.1.2 - Revise the Exception to Section C303.12 to read as follows:
Exception: For roof insulation installed above the deck, the R-value shall be labeled as specified by the material standards in New York City Building Code.
Section C303.1.3 Fenestration product rating.
Section C303.1.3 - Revise Section C303.1.3 to read as follows:
C303.1.3 Fenestration product rating. Fenestration product rating. U-factors, solar heat gain coefficient (SHGC), and visible transmittance (VT) of fenestration products shall be determined as follows:
1. For windows, doors and skylights, U-factor, SHGC and VT ratings shall be determined by a third party recognized by ANSI, ILAC or MiRa in accordance with NFRC 100 and NFRC 200.
2. Where required for garage doors and rolling doors, U-factor ratings shall be determined in accordance with either NFRC 100 or ANSI/DASMA 105.
U-factors, SHGC and VT shall be determined by accredited, independent laboratory, and certified by the manufacturer by a label affixed to the product or a label certificate specific to the products in the project.
Manufactured products or shop fabricated units lacking an affixed label shall be assigned a default U-factor from Table C303.1.3(1) or C303.1.3(2) Products lacking a label indicating SHGC or VT shall be assigned a default SHGC or VT from Table C303.1.3(3).
Where labeled or default values are not indicated, a signed and dated certificate showing compliance through modeling performed using Lawrence Berkley National Labs WINDOW/THERM software at the sizes and Boundary conditions prescribed in NFRC -100/200 shall be provided. The simulation shall be performed by a third-party recognized by ANSI, ILAC, MiRa. For Tubular Daylighting Devices, VTannual shall be measured and rated in accordance with NFRC 203.
Air infiltration rate shall be demonstrated by testing to ASTM E283, the test shall be conducted at an independent third-party laboratory recognized by ANSI, ILAC or MiRa, and shall be less than 5 years old
Section C303.1.5 Fenestration product rating.
Section C303.1.5 - Add new Section C303.1.5 and Table C303.1.5 to read as follows:
C303.1.5 Spandrel Panels. U-factors of opaque assemblies within fenestration framing systems shall be determined in accordance with NFRC 100. U-factors shall be determined by an accredited, independent laboratory. Spandrel panels lacking a calculation shall be assigned a default U-factor from Table C303.1.5.
TABLE C303.1.5
DEFAULT EFFECTIVE U-FACTORS FOR SPANDREL PANELSa
|
RATED R-VALUE OF INSULATION BETWEEN FRAMING MEMBERS |
None |
R-4 |
R-7 |
R-10 |
R-15 |
R-20 |
R-25 |
R-30 |
|
Frame Type |
Spandrel Panel |
Default U-factor |
|
Aluminum without thermal breakb |
Single glass pane, stone, or metal panel |
U-0.445 |
U-0.285 |
U-0.259 |
U-0.247 |
U-0.236 |
U-0.230 |
U-0.226 |
U-0.224 |
|
|
Double glazing with no low-e coatings |
U-0.356 |
U-0.273 |
U-0.254 |
U-0.244 |
U-0.234 |
U-0.229 |
U-0.226 |
U-0.223 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.313 |
U-0.263 |
U-0.249 |
U-0.241 |
U-0.233 |
U-0.228 |
U-0.225 |
U-0.223 |
|
Aluminum with thermal breakc |
Single glass pane, stone, or metal panel |
U-0.429 |
U-0.243 |
U-0.212 |
U-0.197 |
U-0.184 |
U-0.176 |
U-0.172 |
U-0.169 |
|
|
Double glazing with no low-e coatings |
U-0.328 |
U-0.228 |
U-0.205 |
U-0.193 |
U-0.182 |
U-0.175 |
U-0.171 |
U-0.168 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.277 |
U-0.217 |
U-0.199 |
U-0.189 |
U-0.180 |
U-0.174 |
U-0.170 |
U-0.167 |
|
Structural glazingd |
Single glass pane, stone, or metal panel |
U-0.428 |
U-0.217 |
U-0.180 |
U-0.161 |
U-0.145 |
U-0.136 |
U-0.130 |
U-0.126 |
|
|
Double glazing with no low-e coatings |
U-0.316 |
U-0.199 |
U-0.172 |
U-0.157 |
U-0.143 |
U-0.135 |
U-0.129 |
U-0.126 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.257 |
U-0.186 |
U-0.165 |
U-0.152 |
U-0.140 |
U-0.133 |
U-0.128 |
U-0.125 |
|
No framing or insulation is continuouse |
Single glass pane, stone, or metal panel |
U-0.445 |
U-0.160 |
U-0.108 |
U-0.082 |
U-0.058 |
U-0.045 |
U-0.037 |
U-0.031 |
|
|
Double glazing with no low-e coatings |
U-0.356 |
U-0.147 |
U-0.102 |
U-0.078 |
U-0.056 |
U-0.044 |
U-0.036 |
U-0.030 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.313 |
U-0.139 |
U-0.098 |
U-0.076 |
U-0.055 |
U-0.043 |
U-0.035 |
U-0.030 |
a .Extrapolation outside of the table and interpolation between values in the table shall not be permitted. Assemblies with distance between framing less than 30 inches (762 mm), or not included in the default table, shall have a U-factor determined by testing in compliance with ASTM C1363 or modeling in compliance with ANSI/NFRC 100. Spandrel panel assemblies in the table do not include metal backpans. For designs with metal backpans, multiply the U-factor by 1.20. U-factors for spandrel panels include a 3/4 in. air gap and 5/8 in. gypsum board with Rvalue of 0.56 for the interior finish. The gypsum board is assumed to span between the window sill and a channel at the floor.
b. This frame type shall be used for systems that do not contain a non-metallic element that separates the metal exposed to the exterior from the metal that is exposed to the interior condition.
c. This frame type shall be used for systems where a urethane or other non-metallic element separates the metal exposed to the exterior from the metal that is exposed to the interior condition.
d. This frame type shall be used for systems that have no exposed mullion on the interior exterior.
e This frame type shall be used for systems where there is no framing, or the insulation is continuous across and uninterrupted by the framing (also known as mullion wrap).
Section C303.1.6 Fenestration product rating.
Section C303.1.6 - Add new Section C303.1.6 and Table C303.1.6 to read as follows:
C303.1.6 Thermal Bridges. When complying with section C403.7.3, Psi- and chi-factors shall be calculated or derived using one or more of the following:
1. Simulation models in accordance with ISO 10211, Thermal bridges in building construction - Heat flows and surface temperatures - Detailed calculations.
2. Assembly testing in accordance with ASTM C1363, Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus.
3. ISO 14683, Thermal bridges in building construction - Linear thermal transmittance - Simplified methods and default values.
4. British Columbia Hydro and Power Authority, Building Envelope Thermal Bridging Guide v1.6.
5. Table C303.1.6 shall be used for above-grade wall psi factors when thermal bridging mitigation is not specified or not implemented.
TABLE C303.1.6
DEFAULT FACTORS FOR UNMITIGATED THERMAL BRIDGING DETAILS
|
Assembly Type |
Roof Edge |
Parapet |
Intermediate floor to wall intersection |
Intermediate floor balcony or overhang to opaque wall intersection |
Intermediate floor balcony in contact with Vertical Fenestration |
Cladding Support |
Wall to Vertical Fenestration intersection |
|
Metal-framed and Metal Buildings |
0.45 |
0.289 |
0.487 |
0.487 |
0.974 |
0.314 |
0.262 |
|
Mass (exterior or integral) |
0.5 |
0.238 |
0.476 |
0.476 |
0.974 |
0.27 |
0.188 |
|
Mass (interior) |
0.5 |
0.511 |
0.476 |
0.476 |
0.974 |
n/a |
0.313 |
|
Wood-framed and Other |
0.45 |
0.032 |
0.336 |
n/a |
n/a |
0.186 |
0.15 |
Section C303.2 Installation.
Section C303.2- Revise Section C303.2 to read as follows:
C303.2 Installation. Materials, systems and equipment shall be installed in accordance with (i) the manufacturer’s instructions and (ii) the applicable provisions of the New York City Construction Codes
CHAPTER C4
COMMERCIAL ENERGY EFFICIENCY
SECTION C401
GENERAL
Section C401.2.1 ECCCNYS - Commercial Provisions.
Section C401.2.1 - Delete Section C401.2.1 in its entirety and add a new Section C401.2.1 to read as follows:
C401.2.1 New York City Energy Conservation Code. Commercial Provisions. Commercial buildings shall comply with Sections C402 through C406 and C408. Dwelling units and sleeping units in Group R-2 buildings without systems serving multiple units shall be deemed to be in compliance with this chapter, provided that they comply with Section R406 .
Exception: Additions, alterations, repairs and changes of occupancy to existing buildings complying with Chapter C5.
Section C401.2.2 ASHRAE 90.1.
Section C401.2.2 - Delete Section C401.2.2 in its entirety and add a new Section C401.2.2 to read as follows:
C401.2.2 ASHRAE 90.1 Compliance Path. Commercial buildings shall comply with the requirements of 2025 NYC ASHRAE 90.1 .
SECTION C402
BUILDING THERMAL ENVELOPE REQUIREMENTS
Table C402.1.2 Opaque Building Thermal Envelope Assembly Maximum Requirements, U-Factor Methoda, b
Revise Table C402.1.2 to read as follows:
TABLE C402.1.2
OPAQUE BUILDING THERMAL ENVELOPE ASSEMBLY MAXIMUM REQUIREMENTS, U-FACTOR METHODa, b
|
CLIMATE ZONE |
4 |
5 |
6 |
|
|
All other |
Group R |
All other |
Group R |
All other |
Group R |
|
Roofs |
|
Insulation entirely above roof deck |
U-0.030 |
U-0.030 |
U-0.030 |
U-0.030 |
U-0.028 |
U-0.028 |
|
Pre-engineered Metal buildings |
U-0.035 |
U-0.035 |
U-0.035 |
U-0.035 |
U-0.028 |
U-0.028 |
|
Attic and other |
U-0.020 |
U-0.020 |
U-0.020 |
U-0.020 |
U-0.017 |
U-0.017 |
|
Walls, above gradee |
|
Massf |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.055 |
|
Pre-engineered Metal building |
U-0.048 |
U-0.048 |
U-0.048 |
U-0.048 |
U-0.048 |
U-0.046 |
|
Metal framedi |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.044 |
|
Wood framed and other |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.043 |
|
Walls, below grade |
|
Below-grade wallc |
C-0.092 |
C-0.092 |
C-0.092 |
C-0.063 |
C-0.063 |
C-0.063 |
|
Floors |
|
Massd |
U-0.057 |
U-0.051 |
U-0.053 |
U-0.051 |
U-0.051 |
U-0.051 |
|
Joist/framing |
U-0.033 |
U-0.033 |
U-0.033 |
U-0.033 |
U-0.027 |
U-0.027 |
|
Slab-on-grade floors |
|
Unheated slabs |
F-0.52 |
F-0.52 |
F-0.52 |
F-0.51 |
F-0.51 |
F-0.434 |
|
Heated slabs |
F-0.62 |
F-0.62 |
F-0.62 |
F-0.62 |
F-0.62 |
F-0.602 |
|
Opaque doors |
|
Nonswinging door |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
|
Swinging doorg |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
|
Garage door <14% glazingh |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
For SI: 1 pound per square foot = 4.88 kg/m2, 1 pound per cubic foot = 16 kg/m3.
a. Where assembly U-factors, C-factors and F-factors are established in 2025 NYC ASHRAE 90.1, such opaque assemblies shall be a compliance alternative where those values meet the criteria of this table, provided that the construction, excluding the cladding system on walls, complies with the appropriate construction details from 2025 NYC ASHRAE 90.1.
b. Where U-factors have been established by testing in accordance with ASTM C1363, such opaque assemblies shall be a compliance alternative where those values meet the criteria of this table. The R-value of continuous insulation shall be permitted to be added to or subtracted from the original tested design.
c. Where heated slabs are below grade, below-grade walls shall comply with the U-factor requirements for above-grade mass walls.
d. “Mass floors” shall be in accordance with Section C402.1.3.4.
e. Walls, above grade U-factors do not include thermal bridging impact calculated in accordance with Section C402.7
f. Mass walls” shall be in accordance with Section C402.1.3.4.
g. Swinging door U-factors shall be determined in accordance with NFRC-100.
h. Garage doors having a single row of fenestration shall have an assembly U-factor less than or equal to 0.36, provided that the fenestration area is not less than 14 percent and not more than 25 percent of the total door area.
i. This refers to cold-formed steel studs or joists at 16” or 24” on-center
Section C402.1.2.1 Methods of determining U-, C- and F-factors.
Section C402.1.2.1 - Revise Section C402.1.2.1 to read as follows:
C402.1.2.1 Methods of determining U-, C- and F-factors. Where assembly U-factors , C-factors and F-factors and calculation procedures are established in 2025 NYC ASHRAE 90.1 Appendix A for opaque assemblies, such opaque assemblies shall be a compliance alternative provided they meet the criteria of Table C402.1.2 and the construction, excluding cladding system on walls, complies with the applicable construction details from 2025 NYC ASHRAE 90.1 Appendix A. Where U-factors have been established by testing in accordance with ASTM C1363, such opaque assemblies shall be a compliance alternative provided they meet the criteria of Table C402.1.4. The R-value of continuous insulation shall be permitted to be added to or subtracted from the original tested design . Airspaces used for assembly evaluations shall comply with Section C402.2.7.
Section C402.1.2.1.6 Cold-formed steel assemblies.
Section C402.1.2.1.6 - Revise Section C402.1.2.1.6 to read as follows:
C402.1.2.1.6 Cold-formed steel assemblies. U-factors for building thermal envelopes containing cold-formed steel framed ceiling and walls shall be permitted to be determined in accordance with Table A3.3.3.1 in 2025 NYC ASHRAE 90.1. Where the steel-framed wall contains no cavity insulation and uses continuous insulation to satisfy the U-factor maximum, the steel-framed wall member spacing is permitted to be installed at any on-center spacing.
Section C402.1.2.1.7 Spandrel Panels.
Section C402.1.2.1.7 - Revise Section C402.1.2.1.7 to read as follows:
C402.1.2.1.7 Spandrel Panels. U-factors of opaque assemblies within fenestration framing systems shall be determined in accordance with ASTM C1363, ANSI/NFRC 100, or the default values in Table C303.1.5.
Table C402.1.2.1.7 Effective U-Factors For Spandrel Panelsa.
Table C402.1.2.1.7 - Delete Table C402.1.2.1.7 in its entirety.
Table C402.1.3 Opaque Building Thermal Envelope Insulation Component Minimum Requirements, R-Value Methoda
Revise Table C402.1.3 to read as follows:
TABLE C402.1.3
OPAQUE BUILDING THERMAL ENVELOPE INSULATION COMPONENT MINIMUM REQUIREMENTS, R-VALUE METHODa
|
CLIMATE ZONE |
4 |
5 |
6 |
|
|
All other |
Group R |
All other |
Group R |
All other |
Group R |
|
Roofs |
|
Insulation entirely above roof deck |
R-33ci |
R-33ci |
R-33ci |
R-33ci |
R-35ci |
R-35ci |
|
Pre-engineered Metal buildingsb |
R-19ca + R-11 LS |
R-19ca + R-11 LS |
R-19ca + R-11 LS |
R-19ca + R-11 LS |
R-30ca + R-11 LS |
R-25ca + R-11 + R-11 LS |
|
Attic and other |
R-53ca |
R-53ca |
R-53ca |
R-53ca |
R-60ca |
R-60ca |
|
Walls, above grade |
|
Massf |
R-24ca+10ci or R-18ci |
R-24ca+10ci or R-18ci |
R-24ca+10ci or R-18ci |
R-24ca+10ci or R-18ci |
R-24ca+10ci or R-18ci |
R-24ca+10ci or R-18ci |
|
Pre-engineered Metal building |
R-13ca+14.9ci |
R-13ca+14.9ci |
R-13ca + R-14.9ci |
R-13ca + R-14.9ci |
R-13ca + R-14.9ci |
R-13ca + R-15.8ci |
|
Metal framedj |
R-21ca+14ci or R-24ca+12ci |
R-21ca+14ci or R-24ca+12ci |
R-21ca+14ci or R-24ca+12ci |
R-21ca+14ci or R-24ca+12ci |
R-21ca+14ci or R-24ca+12ci |
R-21ca+14ci or R-24ca+12ci |
|
Wood framed and other |
R-21ca+6ci or R-25ca+4ci |
R-21ca+6ci or R-25ca+4ci |
R-21ca+6ci or R-15ca+10ci |
R-21ca+6ci or R-15ca+10ci |
R-21ca+6ci or R-15ca+10ci |
R-21ca+6ci or R-15ca+10ci |
|
Walls, below grade |
|
Below-grade walld |
R-10ci |
R-10ci |
R-10ci |
R-15ci |
R-15ci |
R-15ci |
|
Floors |
|
Masse |
R-14.6ci |
R-16.7ci |
R-16.7ci |
R-16.7ci |
R-16.7ci |
R-16.7ci |
|
Joist/framing |
R-30ca |
R-30ca |
R-30ca |
R-30ca |
R-38ca |
R-38ca |
|
Slab-on-grade floors |
|
Unheated slabs |
R-15 for 24″ below |
R-15 for 24″ below |
R-15 for 24″ below |
R-20 for 24″ below |
R-20 for 24″ below |
R-20 for 48″ below |
|
Heated slabsg |
R-20 for 48" below + R-5 full slab |
R-20 for 48" below + R-5 full slab |
R-20 for 48″ below + R-5 full slab |
R-20 for 48″ below + R-5 full slab |
R-20 for 48″ below + R-5 full slab |
R-15 full slab |
For SI: 1 inch = 25.4 mm, 1 pound per square foot = 4.88 kg/m2, 1 pound per cubic foot = 16 kg/m3.
ci = Continuous Insulation, NR = No Requirement, LS = Liner System, ca = Cavity insulation.
a. Assembly descriptions can be found 2025 NYC ASHRAE 90.1 Appendix A.
b. Where using R-value compliance method, a thermal spacer block shall be provided, otherwise use the U-factor compliance method in Table C402.1.2.
c. Reserved.
d. Where heated slabs are below grade, below-grade walls shall comply with the exterior insulation requirements for heated slabs.
e. “Mass floors” shall be in accordance with Section C402.1.3.4.
f. “Mass walls” shall be in accordance with Section C402.1.3.4.
g. The first value is for perimeter insulation and the second value is for full, under-slab insulation. Perimeter and full-slab insulation components shall be installed in accordance with Section C402.2.4.
h. The first value is cavity insulation; the second value is continuous insulation. Therefore; “R-21ca+R-14ci” means R-21 cavity insulation and R-14 continuous insulation; “R-53ca” means R-53 cavity insulation and no continuous insulation.
i. Where the required R-value in Table C402.1.3 is met by using continuous insulation such that cavity insulation is not required, the R-Value is applicable to any wall framing spacing.
j. This refers to cold-formed steel studs or joists at 16” or 24” on-center
Section C402.1.4 Component performance method
Section C402.1.4 - Delete Section C402.1.4 in its entirety and add a new Section C402.1.4 to read as follows:
C402.1.4 Component performance method. 2025 NYC ASHRAE 90.1, Normative Appendix C shall be permitted for envelope trade-off compliance.
Table C402.1.4 PSI- and CHI-Factors To Determine Thermal Bridges For The Component Performance Method
Table C402.1.4 - Delete Table C402.1.4 in its entirety.
Section C402.1.5 Rooms containing fuel-burning appliances
Section C402.1.5 - Revise the exception to Section C402.1.5 to read as follows:
Exception: Fireplaces and stoves complying the New York City Mechanical Code, and the fireplace blocking requirements of the New York City Building Code.
Section C402.2.7 Airspaces.
Section C402.2.7 - Revise Section C402.2.7 to read as follows:
C402.2.7 Airspaces. Where the R-value of an airspace is used to for compliance in accordance with Section C402.1, the airspace shall be enclosed in a cavity bounded on all sides by building components and constructed to minimize airflow into and out of the enclosed airspace. Airflow shall be deemed minimized where one of the following conditions occur:
1. The enclosed airspace is unventilated.
2. The enclosed airspace is bounded on at least one side by an anchored masonry veneer, constructed in accordance with Chapter 14 of the New York City Building Code and vented by veneer weep holes located only at the bottom of the airspace and spaced not less than 15 inches (381 mm) on center with top of the cavity airspace closed.
Exception: For ventilated cavities, the effect of ventilation of airspaces located on the exterior side of the continuous air barrier and adjacent to and behind the exterior wall-covering material shall be determined in accordance with ASTM C1363 modified with an airflow entering the bottom and exiting the top of the airspace at an air movement rate of not less than 70 mm/second.
Section C402.2.8 Fireplaces.
Section C402.2.8 - Revise Section C402.2.8 to read as follows:
C402.2.8 Fireplaces. New wood-burning fireplaces shall have tight-fitting flue dampers or doors, and outdoor combustion air as required by the fireplace construction provisions of the New York City Construction Codes, as applicable . Where using tight-fitting doors on factory-built fireplaces listed and labeled in accordance with UL 127, the doors shall be tested and listed for the fireplace.
Section C402.4 Roof solar reflectance and thermal emittance.
Section C402.4 - Revise Section C402.4 to read as follows:
C402.4 Roof solar reflectance and thermal emittance. Low slope roofs directly above cooled conditioned spaces in Climate Zones 4 and 5 shall comply with one or more of the options in Table C402.4.
Exceptions: The following roofs and portions of roofs are exempt from the requirements of Table C402.3:
1. Portions of the roof that include or are covered by the following:
1.1. Photovoltaic systems or components.
1.2. Solar air or water-heating systems or components.
1.3. Vegetative roofs or landscaped roofs.
1.4. Above-roof decks or walkways.
1.5. Skylights.
1.6. HVAC systems and components, and other opaque objects mounted above the roof.
2. Portions of the roof shaded during the peak sun angle on the summer solstice by permanent features of the building or by permanent features of adjacent buildings.
3. Portions of roofs that are ballasted with a minimum stone ballast of 17 pounds per square foot (74 kg/m2) or 23 psf (117 kg/m2) pavers.
4. Roofs where not less than 75 percent of the roof area complies with one or more of the exceptions to this section.
Table C402.5 Building Envelope Fenestration Maximum U-Factor And SHGC Requirements
Revise Table C402.5 to read as follows:
TABLE C402.5
BUILDING ENVELOPE FENESTRATION MAXIMUM U-FACTOR
AND SHGC REQUIREMENTS
|
CLIMATE ZONE |
4 |
5 |
6 |
|
Vertical fenestration |
|
U-factora |
|
Fixed fenestration |
U-0.28 |
U-0.28 |
U-0.28 |
|
Operable fenestration |
U-0.32 |
U-0.28 |
U-0.28 |
|
Entrance doors |
U-0.60 |
U-0.60 |
U-0.60 |
|
SHGC |
|
PF < 0.2 |
0.33 |
0.32 |
0.34 |
|
0.2 ≤ PF < 0.5 |
0.36 |
0.38 |
0.41 |
|
PF ≥ 0.5 |
0.40 |
0.52 |
0.54 |
|
Skylights |
|
U-factor |
U-0.40 |
U-0.40 |
U-0.40 |
|
SHGC |
0.34 |
0.30 |
0.30 |
a. U-factor shall be rated in accordance with NFRC 100. U-factor shall reflect project-specific sizes, and include framing components plus glazing
b. SHGC shall reflect project-specific sizes, and include framing components plus glazing. SHGC of the center-of-glass shall be an acceptable alternative for determining compliance with the SHGC requirements for the overall fenestration area.
c. Fixed fenestration shall include glazed curtain walls, pre-fabricated storefronts and factory assembled fixed window units.
Section C402.5.2 Minimum skylight fenestration area.
Section C402.5.2 -Revise the first paragraph of Section C402.5.2 to read as follows:
C402.5.2 Minimum skylight fenestration area. Skylights shall be provided in enclosed spaces greater than 2,500 square feet (232 m2) in floor area, directly under a roof with not less than 75 percent of the ceiling area with a ceiling height greater than 15 feet (4572 mm), and used as an office, lobby, atrium, concourse, corridor, storage space, gymnasium/exercise center, convention center, automotive service area, space where manufacturing occurs, nonrefrigerated warehouse, retail store, distribution/sorting area, transportation depot, parking garage , or workshop. The total toplit daylight zone shall be not less than half the floor area and shall comply with one of the following:
Section C402.5.3.1 Increased skylight SHGC.
Section C402.5.3.1 -Revise Section C402.5.3.1 to read as follows:
C402.5.3.1 Increased skylight SHGC. Skylights shall be permitted a maximum SHGC of 0.40 where located above daylight zones provided with daylight responsive controls.
Section C402.5.3.2 Increased skylight U-factor.
Section C402.5.3.2 -Revise Section C402.5.3.2 to read as follows:
C402.5.3.2 Increased skylight U-factor. Where skylights are installed above daylight zones provided with daylight responsive controls a maximum U-factor of 0.45 shall be permitted.
Section C402.5.3.4 Area-weighted U-factor.
Section C402.5.3.4 -Revise Section C402.5.3.4 to read as follows:
C402.5.3.4 Area-weighted U-factor. An area-weighted average combining vertical fixed fenestration and vertical operable fenestration in accordance with Equation 4-4a shall be permitted to demonstrate compliance with the U-factor requirements for those categories in Table C402.5. Entrance door and skylight U-factors shall be permitted to be averaged separately by fenestration product category. All U-factors shall be rated in accordance with NFRC 100.
∑[(U1 * A1) … (Un * An)] ≤ (Ufixed * Afixed + Uoperable * Aoperable) (Equation 4-4a)
where:
U1 = rated U-factor of the 1st vertical fenestration assembly
A1 = area of the 1st vertical fenestration assembly
Un = rated U-factor of the nth vertical fenestration assembly
An = area of the nth vertical fenestration assembly
Ufixed = U-factor for vertical fixed fenestration in Table C402.4
Afixed = total area of the vertical fixed fenestration assemblies
Uoperable = U-factor for vertical operable fenestration in Table C402.4
Aoperable = total area of the vertical operable fenestration assemblies.
Section C402.6.2 Air leakage compliance.
Section C402.6.2 -Delete Section C402.6.2, Section C402.6.2.1, Section C402.6.2.2,Section C402.6.2.3, Section C402.6.2.3.1 and Section C402.6.2.3.2 in their entirety and add new C402.6.2, Section C402.6.2.1, Section C402.6.2.2, Section C402.6.2.2.1 and Section C402.6.2.2.2 to read as follows:
C402.6.2 Air leakage compliance. Air leakage of the building thermal envelope shall be tested by an approved third party in accordance with Section C402.6.2.1 and C402.6.2.2. The measured air leakage shall not be greater than 0.20 cubic feet per minute per square foot (1.0 L/s x m2) of the building thermal envelope area at a pressure differential of 0.3 inch water gauge (75 Pa) with the calculated building thermal envelope surface area being the sum of the above- and below-grade building thermal envelope.
C402.6.2.1 Whole building test method and reporting. The whole building thermal envelope shall be tested by an approved third party in accordance with ASTM E779, ASTM E1827, ASTM E3158 or an equivalent approved method. Air leakage shall be measured following a multi-point regression method and then averaged from depressurization and pressurization tests. A report that includes the tested surface area, floor area, air by volume, stories above grade, and air leakage rates shall be submitted to the building official and the building owner
Exceptions:
1. For buildings greater than 50,000 square feet (4,645 m2), portions of the building shall be permitted to be tested following the procedures for a guarded test in ASTM E3158 and the measured air leakage shall be area-weighted by the surface areas of the building thermal envelope in each portion. The weighted average tested air leakage shall not be greater than the whole building leakage limit. The following portions of the building shall be tested:
1.1 The entire building thermal envelope area of stories that have any conditioned spaces directly under a roof.
1.2 The entire building thermal envelope area of stories that have a building entrance, a floor over unconditioned space, a loading dock, or that are below grade.
1.3 Representative above-grade portions of the building totaling not less than 25 percent of the wall area enclosing the remaining conditioned space.
2. Hospital, Museums and other occupancies approved by the commissioner may be permitted to only perform pressurization test to comply with the requirements of this section.
C402.6.2.2 Building thermal envelope design and construction verification criteria. The installation of the continuous air barrier shall be verified by the building official, a registered design professional or approved agency in accordance with the following:
1. A review of the construction documents and other supporting data shall be conducted to assess compliance with the requirements in Section C402.6.1.
2. Inspection of continuous air barrier components and assemblies shall be conducted during construction to verify compliance with the requirements of Section C402.6.2.2.1 and C402.6.2.2.2. The air barrier shall remain accessible for inspection and repair.
3. A final inspection report shall be provided for inspections completed by the registered design professional or approved agency. The inspection report shall be provided to the building owner or owner’s authorized agent and the building official. The report shall identify deficiencies found during inspection and details of corrective measures taken.
C402.6.2.2.1 Materials. Materials with an air permeability not greater than 0.004 cfm/ft2 (0.02 L/s × m2) under a pressure differential of 0.3 inch water gauge (75 Pa) when tested in accordance with ASTM E2178 shall comply with this section. Materials in Items 1 through 16 shall be deemed to comply with this section, provided that joints are sealed and materials are installed as air barriers in accordance with the manufacturer’s instructions.
1. Plywood with a thickness of not less than 3/8 inch (10 mm).
2. Oriented strand board having a thickness of not less than 3/8 inch (10 mm).
3. Extruded polystyrene insulation board having a thickness of not less than 1/2 inch (12.7 mm).
4. Foil-back polyisocyanurate insulation board having a thickness of not less than 1/2 inch (12.7 mm).
5. Closed-cell spray foam having a minimum density of 1.5 pcf (2.4 kg/m3) and having a thickness of not less than 1.5 inches (38 mm).
6. Open-cell spray foam with a density between 0.4 and 1.5 pcf (6 and 2.4 kg/m3) and having a thickness of not less than 4.5 inches (113 mm).
7. Exterior or interior gypsum board having a thickness of not less than 1/2 inch (12.7 mm).
8. Cement board having a thickness of not less than 1/2 inch (12.7 mm).
9. Built-up roofing membrane.
10. Modified bituminous roof membrane.
11. Single-ply roof membrane.
12. A Portland cement/sand parge, or gypsum plaster having a thickness of not less than 5/8 inch (15.9 mm).
13. Cast-in-place and precast concrete.
14. Fully grouted concrete block masonry.
15. Sheet steel or aluminum.
C402.6.2.2.2 Assemblies. Assemblies of materials and components with an average air leakage not greater than 0.04 cfm/ft2 (0.2 L/s × m2) under a pressure differential of 0.3 inch of water gauge (75 Pa) where tested in accordance with ASTM E2357, ASTM E1677, ASTM D8052 or ASTM E283 shall comply with this section. Assemblies listed in Items 1 through 3 below shall be deemed to comply, provided that joints are sealed and the requirements of Section C402.6.1.2 are met.
1. Concrete masonry walls coated with either one application of block filler or two applications of a paint or sealer coating.
2. Masonry walls constructed of clay or shale masonry units with a nominal width of greater than or equal to 4 inches (102 mm) or more.
3. A Portland cement/sand parge, stucco or plaster not less than 1/2 inch (12.7 mm) in thickness.
Section C402.6.4 Doors and access openings to shafts, chutes, stairways and elevator lobbies.
Section C402.6.4 -Revise Exceptions 1 and 2 from Section C402.6.4 to read as follows:
Exceptions:
1. Door openings required to comply with the duct and air transfer opening requirements of the New York City Building Code.
2. Doors and door openings required to comply with UL 1784 by the New York City Building Code.
Section C402.6.6 Vestibules.
Section C402.6.6 -Revise all the exceptions from Section C402.6.6 to read as follows:
Exceptions: Vestibules are not required for the following:
1. Doors not intended to be used by the public, such as doors to mechanical or electrical equipment rooms, or intended solely for employee use.
2. Doors opening directly from a sleeping unit or dwelling unit.
3. Doors that open directly from a space less than 3,000 square feet (298 m2) in area, in buildings less than 75 feet (23 m) in height.
4. Revolving doors.
5. Doors used primarily to facilitate vehicular movement or material handling and adjacent personnel doors.
6. Doors that open directly from a space less than 1,000 square feet (92.9 m2) in area, in buildings 75 feet (22.86 m) and greater in height.
Section C402.7 Thermal bridges in above-grade walls.
Section C402.7 -Delete Section C402.7, Section C402.7.1, Section C402.7.2,Section C402.7.3, Section C402.7.4 and Section C402.7.5 in their entirety and add new C402.7, Section C402.7.1, Section C402.7.2, Section C402.7.2.1, Section C402.7.2.2, Section C402.7.2.3, Section C402.7.2.4, Section C402.7.2.4.1, Section C402.7.2.5, Section C402.7.3, Section C402.7.3.1, Section C402.7.3 .2, Section C402.7.3.3 and Table C402.7.3.3 to read as follows:
C402.7 Thermal bridging documentation and mitigation. Where present, intersections listed in Section C402.7.1 that create thermal bridges shall be detailed in construction documents. Thermal bridges shall be mitigated in accordance with Section C402.7.2 or Section C402.7.3. Each contiguous wall assembly shall use only one of either Section C402.7.2 (Prescriptive) or C402.7.3 (Performance) for compliance.
Exceptions:
1. Assemblies not enclosing conditioned space.
2. Clear field thermal bridges.
3. Thermal bridges in uninsulated assemblies.
4. Linear- and point thermal bridges having a material thermal conductivity less than 3.0 Btu•in/h•ft2•°F (0.433 W/(m•K)).
5. Alterations except as required under section C503
C402.7.1 Thermal bridge details. The following intersections shall be evaluated for thermal bridges and be detailed in construction documents:
1. Structural framing and members.
2. Cladding attachment systems
3. Assembly intersections:
a. Roof edge, parapet
b. Intermediate floor to wall intersection
c. Intermediate floor balcony or overhang to opaque wall intersection
d. Intermediate floor balcony in contact with vertical fenestration
e. Cladding support
f. Wall to vertical fenestration intersection
C402.7.2 Thermal bridges in above-grade walls. (Prescriptive). Thermal bridges in above-grade walls shall comply with this section or an approved design accordance with Section 102.
Exceptions: Blocking, coping, flashing, and other similar materials for attachment of roof coverings.
C402.7.2.1 Balconies and floor decks. Balconies and concrete floor decks shall not penetrate the building thermal envelope. Such assemblies shall be separately supported or shall be supported by structural attachments or elements that minimize thermal bridging through the building thermal envelope.
Exceptions: Balconies and concrete floor decks shall be permitted to penetrate the building thermal envelope where one of the following applies:
1. An area-weighted U-factor is used for above-grade wall compliance which includes a U-factor of 0.8 Btu/h•ft2•°F (1.38W/m × K) for the area of the above-grade wall penetrated by the concrete floor deck in accordance with Section C402.1.2.1.5, or
2. An approved thermal break device with an R-value of not less than R-10 insulation material is installed in accordance with the manufacturer's instructions or.
3. An approved design in accordance with Section 102 where the above-grade wall U-factor used for compliance accounts for all balcony and concrete floor deck thermal bridges.
C402.7.2.2 Cladding supports. Linear elements supporting opaque cladding shall be offset from the structure with attachments that allow the continuous insulation, where present, to pass behind the cladding support element except at the point of attachment.
Exceptions:
1. An approved design in accordance with Section 102 where the above-grade wall U-factor used for compliance accounts for the cladding support element thermal bridge.
2. Anchoring for curtain wall and window wall systems where curtain wall and window wall systems comply with Section C402.7.2.4.
C402.7.2.3 Structural beams and columns. Structural steel and concrete beams and columns that project through the building thermal envelope shall be covered with not less than R-5 insulation for not less than 2 feet (610 mm) beyond the interior or exterior surface of an insulation component within the building thermal envelope.
Exception:
1.Where an approved thermal break device is installed in accordance with the manufacturer's instructions.
2. An approved design in accordance with Section102 where the above-grade wall U-factor used to demonstrate compliance accounts for the beam or column thermal bridge .
C402.7.2.4 Vertical fenestration. Vertical fenestration. Vertical fenestration intersections with above-grade walls shall comply with one or more of the following::
1. Where above-grade walls include continuous insulation, the plane of the exterior glazing layer or, for metal frame fenestration, a non-metal thermal break in the frame shall be positioned within 2 inches (610 mm) of the interior or exterior surface of the continuous insulation.
2. Where above-grade walls do not include continuous insulation, the plane of the exterior glazing layer or, for metal frame fenestration, a non-metal thermal break in the frame shall be positioned within the thickness of the integral or cavity insulation.
3. The surface of the rough opening, not covered by the fenestration frame, shall be insulated with insulation of not less than R-3 material or covered with a wood buck that is not less than 1.5 inches (457 mm) thick.
Exceptions:
1. Where an approved design in accordance with Section 102 for the above-grade wall U-factor used for compliance accounts for thermal bridges at the intersection with the vertical fenestration.
2. Doors
C402.7.2.4.1 vertical fenestration with spandrels. Vertical fenestration with spandrels shall comply with one of the following:
1. For the intersection between vertical fenestration and opaque spandrel in a shared framing system, manufacturer's data for the spandrel U-factor shall account for thermal bridges.
2. Use Default values as listed in C303.1.5
C402.7.2.5 Parapets. Parapets shall comply with one or more of the following as applicable:
1. Where continuous insulation is installed on the exterior side of the above-grade wall and the roof is insulated with insulation entirely above deck, the continuous insulation shall extend up both sides of the parapet not less than 2 feet (610 mm) above the roof covering or to the top of the parapet, whichever is less. Parapets that are an integral part of a fire-resistance rated wall, and the exterior continuous insulation applied to the parapet, shall comply with the fire resistance ratings of the building code.
2. Where continuous insulation is installed on the exterior side of the above-grade wall and the roof insulation is below the roof deck, the continuous insulation shall extend up the exterior side of the parapet to not less than the height of the top surface of the roof assembly.
3. Where continuous insulation is not installed on the exterior side of the above-grade wall and the roof is insulated with insulation entirely above deck, the wall cavity or integral insulation shall extend into the parapet up to the exterior face of the roof insulation or equivalent R-value insulation shall be installed not less than 2 feet (610 mm) horizontally inward on the underside of the roof deck.
4. Where continuous insulation is not installed on the exterior side of the above-grade wall and the roof insulation is below the roof deck, the wall and roof insulation components shall be continuous and adjacent to each other at the roof-ceiling-wall intersection.
5. Where a thermal break device with not less than R-10 insulation material aligned with the above-grade wall and roof insulation is installed in accordance with the manufacturer's instructions.
Exception: An approved design in accordance with Section 102 where the above-grade wall U-factor used for compliance accounts for the parapet thermal bridge.
C402.7.3 Mitigating thermal bridges (performance). Wall assemblies shall comply with Sections C402.7.3.1, C402.7.3.2, and C402.7.3.3.
C402.7.3.1 Documentation of psi-factors and chi-factors. Construction documents shall include details for linear thermal bridges, including total length of each type, corresponding psi-factors, and their source; and details for point thermal bridges, including their cross-sectional area and quantity of each type, corresponding chi-factors, and their source.
Exception: HVAC or electrical system point thermal bridges totaling less than 12 square inches (7742 mm2) of cross-sectional area at exposure.
C402.7.3.2 Determination of psi-factors and chi-factors. Thermal Bridge Psi-and chi factors shall be determined in accordance with section C303.1.6
C402.7.3.3 Calculation of total U-factors for above-grade walls. The overall thermal transmittance U-factor, including the effect of linear thermal bridges and point thermal bridges shall be calculated in accordance with Equation 4-5. The thermal bridging U-factor shall not exceed the allowances in Table C402.7.3.3 by wall type, and occupancy.
Utot = [(∑ψi × Li) + (∑χj × nj)]/Atotal) + Uo} (EQUATION 4-5)
Where
Utot = overall U-factor, including the effect of linear thermal bridges and point thermal bridges not included in the assembly clear-field U-factor (Uo)-factor, Btu/(h•ft2•°F)
Uo = clear-field U-factor of the construction assembly as determined in accordance with section C402.1.2.1, Btu/(h•ft2•°F)
Atotal = total opaque projected surface area of the construction assembly, ft2
ψi = psi-factor, thermal transmittance for each type of linear thermal bridge, Btu/(h•ft2•°F)
Li = length of a particular linear thermal bridge as measured on the outside surface of the building envelope, ft2
χi = chi-factor, thermal transmittance for each detail type of point thermal bridge, Btu/(h•°F)
ni = number of occurrences a particular type of point thermal bridge
TABLE C402.7.3.3
THERMAL BRIDGE OVERALL U-FACTOR ALLOWANCE FOR PERFORMANCE COMPLIANCEa
|
CLIMATE ZONE |
CZ4/NYC |
|
|
All other |
Group R |
|
Mass |
U-0.080 |
U-0.077 |
|
Pre-engineered Metal building |
U-0.075 |
U-0.074 |
|
Metal framed |
U-0.071 |
U-0.070 |
|
Wood framed and other |
U-0.051 |
U-0.052 |
a. “Mass walls” shall be in accordance with Section C402.1.3.4
SECTION C403
BUILDING MECHANICAL SYSTEMS
Section C403.2.2 Ventilation.
Section C403.2.2 - Revise Section C403.2.2 to read as follows:
C403.2.2 Ventilation. Ventilation, either natural or mechanical, shall be provided in accordance with Chapter 4 of the New York City Mechanical Code. Where mechanical ventilation is provided, the system shall provide the capability to reduce the outdoor air supply to the minimum required by Chapter 4 of the New York City Mechanical Code.
Section C403.3.4.1 Boiler oxygen concentration controls.
Section C403.3.4.1 - Delete the exception Section C403.3.4.1.
Section C403.3.5 Buildings with high efficiency space heating gas boiler systems.
Section C403.3.5 - Add new Section C403.3.5 to read as follows:
C403.3.5 Buildings with high efficiency space heating gas boiler systems. New buildings where space heating is served by one or more gas hot water boilers with a minimum thermal efficiency (Et) of 90 percent when rated in accordance with the test procedures in Table C403.3.2(6) shall comply with this section, unless otherwise approved by the authority having jurisdiction. The hot water distribution system shall be designed so that the coils and other heat exchangers are selected such that at outdoor design conditions, the hot water return temperature entering the boilers is 120°F (49°C) or less when the boiler is firing.
Section C403.4.1.1 Heat pump supplementary heat.
Section C403.4.1.1 - Revise item 1 from Section C403.4.1.1 to read as follows:
1. The vapor compression cycle cannot provide necessary heating energy to satisfy the thermostat setting where controls are installed such that supplementary heat shall operate only when the outdoor air temperature is less than 17°F and supplemental heat capacity does not exceed 25 percent of total the design load.
Section C403.4.6 Demand responsive controls.
Section C403.4.6 - Revise item 2 from Section C403.4.6 to read as follows:
2. Automatically decreasing the zone operating heating set point by the following values: 1°F (0.5°C), 2°F (1°C), 3°F (1.5°C), and 4°F (2°C) while maintaining the minimum room temperature requirements of the New York City Building Code .
Section C403.4.6 - Revise exception 1 and 2 from Section C403.4.6 to read as follows:
1. Group I occupancies in accordance with the New York City Building Code.
2. Group H occupancies in accordance with the New York City Building Code.
Section C403.6.1 Variable air volume and multiple-zone systems.
Section C403.6.1 - Revise item 3 from Section C403.6.1 to read as follows:
3. The outdoor airflow rate required to meet the minimum ventilation requirements of Chapter 4 of the New York City Mechanical Code.
Section C403.6.6 Multiple-zone VAV system ventilation optimization control.
Section C403.6.6 - Revise Section C403.6.6 to read as follows:
C403.6.6 Multiple-zone VAV system ventilation optimization control. Multiple-zone VAV systems with direct digital control of individual zone boxes reporting to a central control panel shall have automatic controls configured to reduce outdoor air intake flow below design rates in response to changes in system ventilation efficiency (Ev) as defined by the New York City Mechanical Code.
Exceptions:
1. VAV systems with zonal transfer fans that recirculate air from other zones without directly mixing it with outdoor air, dual-duct dual-fan VAV systems, and VAV systems with fan-powered terminal units.
2. Systems where total design exhaust airflow is more than 70 percent of total design outdoor air intake flow requirements.
Section C403.7.1 Demand control ventilation.
Section C403.7.1 - Revise Item 2 from Section C403.7.1 to read as follows:
2. Spaces larger than 250 square feet (23 m2) in Climate Zones 5 and 6 and spaces larger than 500 square feet (46.5 m2) in climate zone 4 that have a design occupant load of 15 people or greater per 1,000 square feet (93 m2) of floor area, as established in New York City Mechanical Code, and are served by systems with one or more of the following:
2.1 An air-side economizer
2.2 Automatic modulating control of the outdoor air damper.
2.3. A design outdoor airflow greater than 3,000 cfm (1416 L/s).
Section C403.7.1 - Revise exception 5 from Section C403.7.1 to read as follows:
5. Spaces with one of the following occupancy classifications as defined in the New York City Mechanical Code: correctional cells, education laboratories, barber, beauty and nail salons, and bowling alley seating areas.
Section C403.7.2 Parking garage ventilation controls.
Section C403.7.2 - Revise Section C403.7.2 to read as follows:
C403.7.2 Parking garage ventilation controls. Ventilation systems employed in enclosed parking garages shall comply with New York City Mechanical Code and the following:
1. Separate ventilation systems and control systems shall be provided for each parking garage section.
2. Control systems for each parking garage section shall be capable of and configured to reduce fan airflow to not less than 0.05 cfm per square foot [0.00025 m3 /(s × m2)] of the floor area served and not more than 20 percent of the design capacity.
3. The ventilation system for each parking garage section shall have controls and devices that result in fan motor demand of not more than 30 percent of design wattage at 50 percent of the design airflow.
Exception: Garage ventilation systems serving a single parking garage section having a total ventilation system motor nameplate horsepower (ventilation system motor nameplate kilowatt) not exceeding 5 hp (3.7 kW) at fan system design conditions and where the parking garage section has no mechanical cooling or mechanical heating.
Nothing in this section shall be construed to require more than one parking garage section in any parking structure.
Section C403.7.4.1 Nontransient dwelling units.
Section C403.7.4.1 - Revise Section C403.7.4.1 to read as follows:
C403.7.4.1 Nontransient dwelling units. Nontransient dwelling units shall be provided with outdoor air energy recovery ventilation systems in accordance with Section 403.3.1.6 of the New York City Mechanical Code and complying with one of the following:
1. The system shall have an enthalpy recovery ratio of not less than 50 percent at cooling design condition and not less than 60 percent at heating design condition.
2. The system shall have a sensible recovery efficiency (SRE) that is not less than 65 percent at 32°F (0°C). SRE shall be determined from a listed value or from interpolation of listed values at an airflow not less than the design airflow, based on testing in accordance with CAN/CSA C439.
Exception:
Enthalpy recovery ratio requirements at cooling design condition in Climate Zones 4, 5, and 6.
Section C403.7.4.2 Spaces other than nontransient dwelling units.
Section C403.7.4.2 - Revise Section C403.7.4.2 to read as follows:
C403.7.4.2 Spaces other than nontransient dwelling units.
Where the supply airflow rate of a fan system serving a space other than a nontransient dwelling unit exceeds the values specified in Tables C403.7.4.2(1) and C403.7.4.2(2), the system shall include a ventilation system and an energy recovery system in accordance with Section 403.3.1.6 of the New York City Mechanical Code. The energy recovery system shall provide an enthalpy recovery ratio of not less than 50 percent, at design conditions. Where an air economizer is required, the energy recovery system shall include a bypass or controls that permit operation of the economizer as required by Section C403.5.
Exception: An energy recovery ventilation system shall not be required in any of the following conditions:
1. Where energy recovery systems are prohibited by the Section 514.2 of the New York City Mechanical Code.
2. Laboratory fume hood systems that include not fewer than one of the following features:
2.1. Variable-air-volume hood exhaust and room supply systems configured to reduce exhaust and makeup air volume to 50 percent or less of design values.
2.2. Direct makeup (auxiliary) air supply equal to or greater than 75 percent of the exhaust rate, heated not warmer than 2°F (1.1°C) above room setpoint, cooled to not cooler than 3°F (1.7°C) below room setpoint, with no humidification added, and no simultaneous heating and cooling used for dehumidification control.
3. Systems serving spaces that are heated to less than 60°F (15.5°C) and that are not cooled.
4. Heating and energy recovery where more than 60 percent of the outdoor heating energy is provided from site-recovered or site-solar energy in climate zones 5.
5. Systems in climate zone 4 requiring dehumidification that employ series energy recovery and have a minimum SERR of 0.40.
6.Where the sum of the airflow rates exhausted and relieved within 30 feet of each other is less than 75 percent of the design ventilation outdoor air flow rate, excluding exhaust air that is any of the following:
a. used for another energy recovery system,
b. not allowed by ASHRAE Standard 170 for use in energy recovery systems with leakage potential,
c. prohibited by the New York City Mechanical Code, or
d. of Class 4 as defined in ASHRAE 62.1.
7. Systems expected to operate less than 20 hours per week at the outdoor air percentage covered by Table C403.7.4.2(1).
8. Systems exhausting toxic, flammable, paint or corrosive fumes or dust.
9. Commercial kitchen hoods used for collecting and removing grease vapors and smoke.
Section C403.7.5 Kitchen exhaust systems.
Section C403.7.5 - Revise exception 2 from Section C403.7.5 to read as follows:
2. Where allowed by the New York City Mechanical Code, an energy recovery ventilation system is installed on the kitchen exhaust with a sensible heat recovery effectiveness of not less than 40 percent on not less than 50 percent of the total exhaust hood airflow.
Section C403.7.7 Shutoff dampers.
Section C403.7.7 - Revise Section C403.7.7 to read as follows:
C403.7.7 Shutoff dampers. Outdoor air intake and exhaust openings and stairway and shaft vents shall be provided with Class I motorized dampers. The dampers shall have an air leakage rate not greater than 4 cfm/ft2 (20.3 L/s × m2) of damper surface area at 1.0 inch water gauge (249 Pa) and shall be labeled by an approved agency when tested in accordance with AMCA 500D for such purpose.
Outdoor air intake and exhaust dampers shall be installed with automatic controls configured to close when the systems or spaces served are not in use or during unoccupied period warm-up and setback operation, unless the systems served require outdoor or exhaust air in accordance with the New York City Mechanical Code or the dampers are opened to provide intentional economizer cooling.
Stairway and elevator shaft vent dampers shall be installed with automatic controls configured to open upon the activation of any fire alarm initiating device of the building’s fire alarm system or the interruption of power to the damper, or by thermostatic control systems.
Exception: Nonmotorized gravity dampers shall be an alternative to motorized dampers for exhaust and relief openings as follows:
1. In buildings less than three stories in height above grade plane.
2. In buildings of any height located in Climate Zones 0, 1, 2 or 3.
3. Where the design exhaust capacity is not greater than 300 cfm (142 L/s).
Nonmotorized gravity dampers shall have an air leakage rate not greater than 20 cfm/ft2 (101.6 L/s × m2) where not less than 24 inches (610 mm) in either dimension and 40 cfm/ft2 (203.2 L/s × m2) where less than 24 inches (610 mm) in either dimension. The rate of air leakage shall be determined at 1.0 inch water gauge (249 Pa) when tested in accordance with AMCA 500D for such purpose. The dampers shall be labeled by an approved agency.
Section C403.13.1 Duct and plenum insulation and sealing.
Section C403.13.1 - Revise Section C403.13.1 to read as follows:
C403.13.1 Duct and plenum insulation and sealing. Supply and return air ducts and plenums shall be insulated with not less than R-6 insulation where located in unconditioned spaces and where located outside the building with not less than R-8 insulation in Climate Zone 4 and not less than R-12 insulation in Climate Zones 5 and 6. Ducts located underground beneath buildings shall be insulated as required in this section or have an equivalent thermal distribution efficiency. Underground ducts utilizing the thermal distribution efficiency method shall be listed and labeled to indicate the R-value equivalency. Where located within a building thermal envelope assembly, the duct or plenum shall be separated from the building exterior or unconditioned or exempt spaces by not less than R-8 insulation in Climate Zone 4 and not less than R-12 insulation in Climate Zones 5 and 6.
Exceptions:
1. Where located within equipment.
2. Where the design temperature difference between the interior and exterior of the duct or plenum is not greater than 15°F (8°C).
Ducts, air handlers and filter boxes shall be sealed. Joints and seams shall comply with the New York City Mechanical Code.
Section C403.13.2 Duct construction.
Section C403.13.2 - Revise Section C403.13.2 to read as follows:
C403.13.2 Duct construction. Ductwork shall be constructed and erected in accordance with the New York City Mechanical Code .
Section C403.13.2.1 Low-pressure duct systems.
Section C403.13.2.1 - Revise Section C403.13.2.1 to read as follows:
C403.13.2.1 Low-pressure duct systems. Longitudinal and transverse joints, seams and connections of supply and return ducts operating at a static pressure less than or equal to 2 inches water gauge (w.g.) (498 Pa) shall be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic-plus-embedded-fabric systems or tapes installed in accordance with the manufacturer’s instructions. Pressure classifications specific to the duct system shall be clearly indicated on the construction documents in accordance with the New York City Mechanical Code.
Exception: Locking-type longitudinal joints and seams, other than the snap-lock and button-lock types, need not be sealed as specified in this section.
Section C403.13.2.2 Medium-pressure duct systems.
Section C403.13.2.2 - Revise Section C403.13.2.2 to read as follows:
C403.13.2.2 Medium-pressure duct systems. Ducts and plenums designed to operate at a static pressure greater than 2 inches water gauge (w.g.) (498 Pa) but less than 3 inches w.g. (747 Pa) shall be insulated and sealed in accordance with Section C403.12.1. Pressure classifications specific to the duct system shall be clearly indicated on the construction documents in accordance with the New York City Mechanical Code.
Section C403.13.3 Piping insulation.
Section C403.13.3 - Revise Section C403.13.3 to read as follows:
C403.13.3 Piping insulation. Piping serving as part of a heating or cooling system shall be thermally insulated in accordance with Table C403.13.3(1) or C403.13.3(2)
Exceptions:
1. Factory-installed piping within HVAC equipment tested and rated in accordance with a test procedure referenced by this code.
2. Factory-installed piping within room fan-coils and unit ventilators tested and rated according to AHRI 440 (except that the sampling and variation provisions of Section 6.5 shall not apply) and AHRI 840, respectively.
3. Piping that conveys fluids that have a design operating temperature range between 60°F (15°C) and 105°F (41°C).
4. Strainers, control valves, and balancing valves associated with piping 1 inch (25 mm) or less in diameter.
5. Direct buried piping that conveys fluids at or below 60°F (15°C).
6.In radiant heating systems, sections of piping intended by design to radiate heat.
SECTION C404
SERVICE WATER HEATING
Table C404.5.2.1 Internal Volume Of Various Water Distribution Tubing.
Table C404.5.2.1 - Delete Table C404.5.2.1 in it entirety and add new Table C404.5.2.1 to read as follows:
TABLE C404.5.2.1
INTERNAL VOLUME OF VARIOUS WATER DISTRIBUTION TUBING
|
Nominal Size (inches) |
Copper Type L |
Copper Type K |
|
3/8 |
0.97 |
0.84 |
|
1/2 |
1.55 |
1.45 |
|
3/4 |
3.22 |
2.90 |
|
1 |
5.49 |
5.17 |
|
11/4 |
8.36 |
8.09 |
|
11/2 |
11.83 |
11.45 |
|
2 |
20.58 |
20.04 |
For SI: 1 foot = 304.8 mm, 1 inch = 25.4 mm, 1 liquid ounce = 0.030 L, 1 oz/ft2 = 305.15 g/m2.
N/A = Not Available.
SECTION C405
ELECTRICAL POWER AND LIGHTING SYSTEMS
Section C405.1 General.
Section C405.1 - Revise Section C405.1 to read as follows:
C405.1 General. Electrical power and lighting systems and generation shall comply with this section. General lighting shall consist of all lighting included when calculating the total connected interior lighting power in accordance with Section C405.3.1 and which does not require specific application controls in accordance with Section C405.2.5.
Lighting controls shall be commissioned and completed in accordance with the requirements of Section C408.3 .
Exception: Dwelling units and sleeping units that comply with Section C405.2.10, Section C405.3.3 and Section C405.6.
Section C405.2.1 Occupant sensor controls.
Section C405.2.1 - Revise Section C405.2.1 to read as follows:
C405.2.1 Occupant sensor controls. Occupant sensor controls shall be installed to control lights in the following space types:
1. Classrooms/lecture/training rooms.
2. Computer Room, data center
3. Conference/meeting/multipurpose rooms.
4. Copy/print rooms.
5. Lounges/breakrooms.
6. Cafeteria and fast food dinning areas.
7. Medical supply room in a healthcare facility.
8. Enclosed offices.
9. Laundry/washing area.
10. Open plan office areas.
11. Restrooms.
12. Storage rooms.
13. Telemedicine room in a healthcare facility.
14. Locker rooms.
15. Corridors/transition areas/stairways.
16. Warehouse storage areas.
17. Other spaces 300 square feet (28 m2) or less that are enclosed by floor-to-ceiling height partitions.
18. Janitorial closets.
Section C405.2.1.1 Occupant sensor control function.
Section C405.2.1.1 - Revise Section C405.2.1.1 to read as follows:
C405.2.1.1 Occupant sensor control function. Occupant sensor controls in warehouses storage areas shall comply with Section C405.2.1.2. Occupant sensor controls in open plan office areas, cafeteria dining areas, and fast food dining areas, 300 square feet (28 m2) or greater in area shall comply with Section C405.2.1.3. Occupant sensor controls in corridors shall comply with Section C405.2.1.4. Occupant sensor control function for egress illumination shall comply with Section C405.2.1.5. Occupant sensor controls for all other spaces specified in Section C405.2.1 shall comply with the following:
1. They shall automatically turn off lights within 15 minutes after all occupants have left the space.
2. They shall be manual on or controlled to automatically turn on the lighting to not more than 50-percent power of full power.
3. They shall incorporate a manual control to allow occupants to turn off lights.
Exceptions:
1. Full automatic-on controls with no manual control shall be permitted in corridors, interior parking areas, stairways, restrooms, locker rooms, lobbies, library stacks and areas where manual operation would endanger occupant safety or security.
2. Manual-on controls shall be required for classrooms (not including shop classrooms, laboratory classrooms, and preschool classrooms), conference/meeting rooms, employee lunch and break rooms, and offices smaller than 200 square feet (18.5 m2) in area. Such sensors and controls shall not have an override switch that converts from manual-on to automatic-on functionality, and may have a grace period of up to 30 seconds to turn on the lighting automatically after the sensor has turned off the lighting if occupancy is detected.
3. Remote location of this local control device or devices shall be permitted for reasons of safety or security when each remote control device has an indicator pilot light as part of or next to the control device and the light is clearly labeled to identify the controlled lighting.
Section C405.2.1.2 Occupant sensor control function in warehouse storage areas.
Section C405.2.1.2 - Revise Item 2 from Section C405.2.1.2 to read as follows:
2. Occupant sensors shall automatically reduce lighting power within each controlled area to an unoccupied setpoint of not more than 30 percent of full power within 15 minutes after all occupants have left the controlled area.
Section C405.2.1.3 Occupant sensor control function in open plan office areas.
Section C405.2.1.3 - Delete Section C405.2.1.3 in its entirety, add new Section C405.2.1.3 to read as follows:
C405.2.1.3 Occupant sensor control function in open plan office areas, cafeteria dining areas, and fast-food dining areas. Occupant sensor controls in open plan office spaces, cafeteria dining areas, and fast-food dining areas less than 300 square feet (28 m2) in area shall comply with Section C405.2.1.1. Occupant sensor controls in all other open plan office spaces, cafeteria dining spaces, and fast food dining spaces shall comply with all of the following:
1. The controls shall be configured so that general lighting can be separated into control zones with floor areas not greater than 600 square feet (55 m2) within the open plan office space or dining space. Where a through aisle traverses a control zone or separates two control zones, the luminaires serving the aisle shall be controlled separately from the general lighting in the control zones.
2. General lighting in each control zone shall be permitted to automatically turn on upon occupancy within the control zone. General lighting in other unoccupied zones within the open plan office space shall be permitted to turn on to not more than 20 percent of full power or remain unaffected.
3. The controls shall automatically turn off general lighting in all control zones within 15 minutes after all occupants have left the open plan office space.
Exception: Where general lighting is turned off by time-switch control complying with Section C405.2.2.1.
4. General lighting in each control zone shall turn off or uniformly reduce lighting power to an unoccupied setpoint of not more than 20 percent of full power within 15 minutes after all occupants have left the control zone.
Section C405.2.1.4 Occupant sensor control function in corridors.
Section C405.2.1.4 - Revise Section C405.2.1.4 to read as follows:
C405.2.1.4 Occupant sensor control function in corridors. Occupant sensor controls in corridors shall uniformly reduce lighting power to an occupied setpoint not more than 50 percent of full power within 15 minutes after all occupants have left the space.
Exception: Corridors provided with less than two footcandles of illumination on the floor at the darkest point with all lights on.
Section C405.2.1.5 Occupant sensor control function for egress illumination.
Section C405.2.1.5 - Revise Section C405.2.1.5 to read as follows:
C405.2.1.5 Occupant sensor control function for egress illumination. In new buildings, luminaires serving the exit access and providing means of egress illumination required by the New York City Building Code, including luminaires that function as both normal and emergency means of egress illumination, operating under normal conditions shall be controlled by a combination of listed emergency relay and occupancy sensors, or signal from another building control system, that automatically reduces the lighting power by at least 50% percent when unoccupied for a period longer than 15 minutes.
Exceptions:
1. Means of egress illumination serving the exit access that does not exceed 0.02 watts per square foot of building area is exempt from this requirement.
2. Emergency lighting designated to meet the requirements of the New York City Building Code .
Section C405.2.2.1 Time-switch control function.
Section C405.2.2.1 - Revise Item 7 from Section C405.2.2.1 to read as follows:
7. For spaces where schedules are not defined time switch controls are programmed by default to a schedule that turns off lights not less than 12 hours per day.
Section C405.2.4.1 Daylight-responsive control function.
Section C405.2.4.1 - Revise exceptions 1 and 2 from Section C405.2.4.1 to read as follows:
Exceptions:
1. Within each space, up to 100 watts of lighting within the primary sidelit daylight zone is permitted to be controlled together with lighting in a primary sidelit daylight zone facing a different cardinal orientation.
2. Within each space, up to 100 watts of lighting within the secondary sidelit daylight zone is permitted to be controlled together with lighting in a secondary sidelit daylight zone facing a different cardinal orientation.
Section C405.2.7.2 Building facade and landscape lighting.
Section C405.2.7.2 - Revise Section C405.2.7.2 to read as follows:
C405.2.7.2 Building facade and landscape lighting. Building facade and landscape lighting shall automatically shut off, when sufficient daylight is present or not later than 1 hour after building or business closing to not earlier than 1 hour before building or business opening. For buildings that operate 24 hours, building’s façade lighting shall shut off at midnight.
Exception: Designated areas in zones 3 and 4 during special events may be permitted to extend hours of façade lighting at the discretion of the commissioner.
Section C405.2.9 Interior parking area.
Section C405.2.9 - Revise Item 1 from Section C405.2.9 to read as follows:
1. Lighting power of each luminaire shall be automatically reduced by not less than 30 percent when there is no activity detected within a lighting zone for 15 minutes. Lighting zones for this requirement shall be not larger than 3,600 square feet (334.5 m2).
Section C405.2.9 - Revise Item 3 from Section C405.2.9 to read as follows:
3. The power to luminaires within 20 feet (6096 mm) of perimeter wall openings or skylights shall automatically reduce in response to daylight by at least 50 percent.
Section C405.2.10.1 Sleeping units and dwelling units in hotels, motels and vacation timeshare properties.
Section C405.2.10.1 - Revise Item 2 from Section C405.2.10.1 to read as follows:
2. Lighting controls that automatically turn off all lighting and switched receptacles within 15 minutes after all occupants have left the unit.
Section C405.2.10.2 Sleeping units in congregate living facilities.
Section C405.2.10.2 - Revise Item 1 from Section C405.2.10.2 to read as follows:
1. Lighting in bathrooms shall be controlled by an occupant sensor control that automatically turns off lights within 15 minutes after all occupants have left the space.
Section C405.3.1 Total connected interior lighting power.
Section C405.3.1 - Revise exception 19 from Section C405.3.1 to read as follows:
19. Lighting in dwelling units.
Section C405.3.2.1 Building Area Method.
Section C405.3.2.1 - Revise Item 2 from Section C405.3.2.1 to read as follows:
2. Determine the floor area for each building area type listed in Table C405.3.2(1) and multiply this area by the applicable value from Table C405.3.2(1) to determine the lighting power (watts) for each building area type. dwelling units are excluded from lighting power allowance calculations by application of Section C405.3.3. The area of dwelling units is not included in the calculation.
Section C405.3.2.2 Space-by-Space Method.
Section C405.3.2.2 - Revise Item 2 from Section C405.3.2.2 to read as follows:
2. Determine the total floor area of all the spaces of each space type and multiply by the value for the space type in Table C405.3.2(2) to determine allowed the lighting power (watts) for each space type. dwelling units are excluded from lighting power allowance calculations by application of Section C405.3.3. The area of dwelling units is not included in the calculation.
Table C405.3.2(1) Interior Lighting Power Allowances: Building Area Method.
Table C405.3.2(1) - Revise Table C405.3.2(1) to read as follows:
TABLE C405.3.2(1)
INTERIOR LIGHTING POWER ALLOWANCES:
BUILDING AREA METHOD
|
BUILDING AREA TYPE |
LPD (watts/ft2) |
|
Automotive facility |
0.64 |
|
Convention center |
0.64 |
|
Courthouse |
0.74 |
|
Dining: bar lounge/leisure |
0.69 |
|
Dining: cafeteria/fast food |
0.66 |
|
Dining: family |
0.61 |
|
Dormitorya, b |
0.52 |
|
Exercise center |
0.65 |
|
Fire stationa |
0.50 |
|
Gymnasium |
0.67 |
|
Health care clinic |
0.68 |
|
Hospitala |
0.86 |
|
Hotel/Motela, b |
0.53 |
|
Library |
0.78 |
|
Manufacturing facility |
0.60 |
|
Motion picture theater |
0.43 |
|
Multiple-familyc |
0.46 |
|
Museum |
0.56 |
|
Office |
0.62 |
(continued)
TABLE C405.3.2(1)-continued
INTERIOR LIGHTING POWER ALLOWANCES:
BUILDING AREA METHOD
|
BUILDING AREA TYPE |
LPD (watts/ft2) |
|
Parking garage |
0.12 |
|
Penitentiary |
0.65 |
|
Performing arts theater |
0.82 |
|
Police station |
0.62 |
|
Post office |
0.62 |
|
Religious building |
0.66 |
|
Retail |
0.78 |
|
School/university |
0.67 |
|
Sports arena |
0.73 |
|
Town hall |
0.67 |
|
Transportation |
0.51 |
|
Warehouse |
0.41 |
|
Workshop |
0.83 |
For SI: 1 watt per square foot = 10.76 w/m2.
Table C405.3.2(2) Interior Lighting Power Allowances: Space-By-Space Method.
Table C405.3.2(2) - Revise Table C405.3.2(2) to read as follows:
TABLE C405.3.2(2)
INTERIOR LIGHTING POWER ALLOWANCES: SPACE-BY-SPACE METHOD
|
COMMON SPACE TYPESa |
LPD (watts/ft)²) |
|
Atrium |
|
Less than 40 feet in height |
0.41 |
|
Greater than 40 feet in height |
0.51 |
|
Audience seating area |
|
In an auditorium |
0.57 |
|
In a gymnasium |
0.23 |
|
In a motion picture theater |
0.27 |
|
In a penitentiary |
0.28 |
|
In a performing arts theater |
1.09 |
|
In a religious building |
0.72 |
|
In a sports arena |
0. 27 |
|
Otherwise |
0.33 |
|
Banking activity area |
0.56 |
|
Breakroom (See Lounge/breakroom) |
|
Classroom/lecture hall/training room |
|
In a penitentiary |
0.74 |
|
Otherwise |
0.72 |
|
Computer room, data center |
0.75 |
|
Conference/meeting/multipurpose room |
0.88 |
|
Confinement cells |
0.52 |
|
Copy/print room |
0.50 |
|
Corridor |
|
In a facility for the visually impaired (and not used primarily by the staff)b |
0.71 |
|
In a hospital |
0.61 |
|
Otherwise |
0.44 |
|
Courtroom |
1.06 |
|
Dining area |
|
In bar/lounge or leisure dining |
0.62 |
|
In cafeteria or fast food dining |
0.36 |
|
In a facility for the visually impaired (and not used primarily by the staff)b |
1.22 |
|
In family dining |
0.52 |
|
In a penitentiary |
0.35 |
|
Otherwise |
0.42 |
|
Electrical/mechanical room |
0.39 |
|
Emergency vehicle garage |
0.41 |
|
Food preparation area |
0.92 |
|
Guestroomc, d |
0.41 |
|
Laboratory |
|
In or as a classroom |
1.04 |
|
Otherwise |
1.21 |
|
Laundry/washing area |
0.43 |
|
Loading dock, interior |
0.51 |
|
Lobby |
|
For an elevator |
0.52 |
|
In a facility for the visually impaired (and not used primarily by the staff)b |
1.44 |
|
In a motion picture theater |
0.20 |
|
In a performing arts theater |
0.82 |
|
Otherwise |
0.80 |
|
Locker room |
0.43 |
|
Lounge/breakroom |
|
In a healthcare facility |
0.53 |
|
Mother's wellness room |
0.68 |
|
Otherwise |
0.44 |
|
Office |
|
Enclosed |
0.73 |
|
Open plan |
0.56 |
|
Parking area daylighting transition zone |
1.06 |
|
Parking area, interiori |
0.11 |
|
Pharmacy area |
1.23 |
|
Restroom |
|
In a facility for the visually impaired (and not used primarily by the staff b |
0.81 |
|
Otherwise |
0.74 |
|
Sales area |
0.85 |
|
Seating area, general |
0.21 |
|
Security screening general areas |
0.64 |
|
Security screening in transportation facilities |
0.93 |
|
Security screening transportation waiting area |
0.56 |
|
Stairway (see Space containing stairway) |
|
Stairwell |
0.47 |
|
Storage room |
0.35 |
|
Vehicular maintenance area |
0.53 |
|
Workshop |
1.09 |
|
BUILDING TYPE SPECIFIC SPACE TYPESa |
LPD (watts/ft²) |
|
Automotive (see Vehicular maintenance area) |
|
Convention Center-exhibit space |
0.50 |
|
Dormitory-living quartersc, d |
0.46 |
|
Facility for the visually impairedb |
|
In a chapel (and not used primarily by the staff) |
0.58 |
|
In a recreation room (and not used primarily by the staff) |
1.20 |
|
Gaming establishments |
|
High limits game |
1.68 |
|
Slots |
0.54 |
|
Sportsbook |
0.82 |
|
Table Games |
1.09 |
|
Gymnasium/fitness center |
|
In an exercise area |
0.50 |
|
In a playing area |
0.75 |
|
Healthcare facility |
|
In an exam/treatment room |
1.16 |
|
In an imaging room |
0.94 |
|
In a medical supply room |
0.54 |
|
In a nursery |
0.87 |
|
In a nurse’s station |
0.75 |
|
In an operating room |
1.87 |
|
In a patient roomc |
0.45 |
|
In a physical therapy room |
0.82 |
|
In a recovery room |
0.89 |
|
In a telemedicine room |
1.44 |
|
Library |
|
In a reading area |
0.77 |
|
In the stacks |
1.18 |
|
Manufacturing facility |
|
In a detailed manufacturing area |
0.75 |
|
In an equipment room |
0.61 |
|
In an extra-high-bay area (greater than 50 feet floor-to-ceiling height) |
0.73 |
|
In a high-bay area (25-50 feet floor-to-ceiling height) |
0.58 |
|
In a low-bay area (less than 25 feet floor-to-ceiling height) |
0.61 |
|
Museum |
|
In a general exhibition area |
0.31 |
|
In a restoration room |
0.77 |
|
Performing arts theater-dressing room |
0.35 |
|
Post office-sorting area |
0.66 |
|
Religious buildings |
|
In a fellowship hall |
0.50 |
|
In a worship/pulpit/choir area |
0.75 |
|
Retail facilities |
|
In a dressing/fitting room |
0.45 |
|
Hair salon |
0.65 |
|
Nail salon |
0.75 |
|
In a mall concourse |
0.57 |
|
Massage space |
0.81 |
|
Sports arena-playing area |
|
For a Class I facility c |
2.26 |
|
For a Class II facility d |
1.45 |
|
For a Class III facility e |
1.08 |
|
For a Class IV facility f |
0.72 |
|
Transportation facility |
|
Airport hanger |
1.36 |
|
Passenger loading area |
0.71 |
|
In a baggage/carousel area |
0.28 |
|
In an airport concourse |
0.31 |
|
At a terminal ticket counter |
0.40 |
|
Warehouse-storage area |
|
For medium to bulky, palletized items |
0.27 |
|
For smaller, hand-carried items |
0.65 |
For SI: 1 foot = 304.8 mm, 1 watt per square foot = 10.76 w/m2.
a. In cases where both a common space type and a building area specific space type are listed, the building area specific space type shall apply.
b. A ‘Facility for the Visually Impaired’ is a facility that is licensed or will be licensed by local or state authorities for senior long-term care, adult daycare, senior support or people with special visual needs.
c. Class I facilities consist of professional facilities; and semiprofessional, collegiate, or club facilities with seating for 5,000 or more spectators.
d. Class II facilities consist of collegiate and semiprofessional facilities with seating for fewer than 5,000 spectators; club facilities with seating for between 2,000 and 5,000 spectators; and amateur league and high -school facilities with seating for more than 2,000 spectators.
e. Class III facilities consist of club, amateur league and high -school facilities with seating for 2,000 or fewer spectators.
f. Class IV facilities consist of elementary school and recreational facilities; and amateur league and high -school facilities without provision for spectators.
g. The wattage of lighting in daylight transition zones and ramps without parking is excluded.
h.Pool surfaces are excluded. Neither the surface area of the swimming or spa pool nor the wattage of the lighting serving them shall be counted.
Section C405.4 Horticultural lighting.
Section C405.4 - Revise Section C405.4 to read as follows:
C405.4 Horticultural lighting. Permanently installed luminaires for horticultural lighting shall have a photosynthetic photon efficacy of not less than 2.1 micromoles per joule (μmol/J). Luminaires for horticultural lighting in greenhouses shall be controlled by a device that automatically turns off the luminaire when sufficient daylight is available. Luminaires for horticultural lighting shall be controlled by a device that automatically turns off the luminaire at specific programmed times.
Section C405.5.1 Total connected exterior lighting power.
Section C405.5.1 - Revise Exception 15 from Section C405.5.1 to read as follows
15. Lighting of the exterior means of egress as required by the New York City Building Code.
Table C405.5.2(2) Lighting Power Allowances For Building Exteriors.
Table C405.5.2(2) - Revise Table C405.5.2(2) to read as follows:
TABLE C405.5.2(2)
LIGHTING POWER ALLOWANCES FOR BUILDING EXTERIORS
|
|
LIGHTING ZONES |
|
|
Zone 1 |
Zone 2 |
Zone 3 |
Zone 4 |
|
Base Site Allowance |
160 W |
280 W |
400 W |
560 W |
|
Uncovered Parking Areas |
|
Parking area, exterior |
0.015 W/ft2 |
0.026 W/ft2 |
0.037 W/ft2 |
0.05 W/ft2 |
|
Building Grounds |
|
Walkways and ramps |
0.50 W/linear foot |
0.50 W/linear foot |
0.55 W/linear foot |
0.60 W/linear foot |
|
Plaza areas |
0.028 W/ft2 |
0.049 W/ft2 |
0.070 W/ft2 |
0.098 W/ft2 |
|
Dining areas |
0.156 W/ft2 |
0.273 W/ft2 |
0.390 W/ft2 |
0.546 W/ft2 |
|
Stairways |
Exempt |
Exempt |
Exempt |
Exempt |
|
Pedestrian tunnels |
0.063 W/ft2 |
0.110 W/ft2 |
0.157 W/ft2 |
0.220 W/ft2 |
|
Landscaping |
0.014 W/ft2 |
0.025 W/ft2 |
0.036 W/ft2 |
0.04 W/ft2 |
|
Building Entrances and Exits |
|
Pedestrian and vehicular entrances and exits |
5.6 W/linear foot of opening |
9.8 W/linear foot of opening |
14 W/linear foot of opening |
19.6 W/linear foot of opening |
|
Entry canopies |
0.072 W/ft2 |
0.126 W/ft2 |
0.180 W/ft2 |
0.252W/ft2 |
|
Loading docks |
0.104 W/ft2 |
0.182 W/ft2 |
0.260 W/ft2 |
0.35 W/ft2 |
|
Sales Canopies |
|
Free-standing and attached |
0.20 W/ft2 |
0.35 W/ft2 |
0.50 W/ft2 |
0.70 W/ft2 |
|
Outdoor Sales |
|
Open areas (including vehicle sales lots) |
0.072 W/ft2 |
0.126 W/ft2 |
0.180 W/ft2 |
0.252 W/ft2 |
|
Street frontage for vehicle sales lots in addition to “open area” allowance |
No allowance |
7 W/linear foot |
7 W/linear foot |
14.4 W/linear foot |
For SI: 1 foot = 304.8 mm, 1 watt per square foot = W/0.0929 m2.
W = watts.
Section C405.6 Dwelling electrical meter.
Section C405.6 - Delete Section C405.6 in its entirety, add new Section C405.6, Section C405.6.1 and C405.6.2 to read as follows:
C405.6 Electrical meter. Electrical service within buildings shall comply with the following:
C405.6.1 Dwelling electrical meter. Each dwelling unit located in a Group R-2 building shall have a separate electrical meter.
C405.6.2 Electrical meters for tenant spaces in covered buildings. Each covered tenant space in a new building shall be equipped with a separate meter or sub-meter to measure the electrical consumption of such space when let or sublet. The terms covered building, meter, sub-meter, tenant space and covered tenant space shall have the same meanings as defined in Section 28-311.2 of the NYC Administrative Code.
Section C405.10.1 Elevator cabs.
Section C405.10.1 - Delete Section C405.10.1 in its entirety, add new Section C405.10.1, Section C405.10.1.1, Section C405.10.1.1.1, Section C405.10.1.1.2 and Section C405.10.1.1.3 to read as follows:
C405.10.1 Elevator equipment and cabs. For the luminaires in each elevator cab, not including signals and displays, the sum of the lumens divided by the sum of the watts shall be not less than 35 lumens per watt. Ventilation fans in elevators that do not have their own air-conditioning system shall not consume more than 0.33 watts/cfm at the maximum rated speed of the fan. Controls shall be provided that will de-energize ventilation fans and lighting systems when the elevator is stopped, unoccupied and with its doors closed for over 15 minutes.
C405.10.1.1 Power conversion system. New traction elevators with a rise of 75 feet (23 m) or more in new buildings shall have a power conversion system that complies with Sections C405.10.1.1.1 through C405.10.1.1.3.
C405.10.1.1.1 Motor. Induction motors with a Class IE2 efficiency rating, as defined by IEC EN 60034-30, or alternative technologies, such as permanent magnet synchronous motors that have equal or better efficiency, shall be used.
C405.10.1.1.2 Transmission. Transmissions shall not reduce the efficiency of the combined motor/transmission below that shown for the Class IE2 motor for elevators with capacities below 4,000 pounds (1814 kg). Gearless machines shall be assumed to have a 100 percent transmission efficiency.
C405.10.1.1.3 Drive. Potential energy released during motion shall be recovered with a regenerative drive that supplies electrical energy to the building electrical system.
Section C405.12 Commercial kitchen equipment.
Section C405.12 - Add new Section C405.12, Table C405.12(1), Table C405.12(2), Table C405.12(3), Table C405.12(4) and Table C405.12(5)to read as follows:
C405.12 Commercial kitchen equipment.
Commercial kitchen equipment shall comply with the minimum efficiency requirements of Tables C405.12(1) through C405.12(5).
TABLE C405.12(1)
MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL FRYERS
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
|
HEAVY-LOAD COOKING ENERGY EFFICIENCY |
IDLE ENERGY RATE |
TEST PROCEDURE |
|
Standard Open Deep-Fat Gas Fryers |
≥ 50% |
≤ 9,000 Btu/hr |
ASTM Standard F1361- 17 |
|
Standard Open Deep-Fat Electric Fryers |
≥ 83% |
≤ 800 watts |
|
|
Large Vat Open Deep- Fat Gas Fryers |
≥ 50% |
≤ 12,000 Btu/hr |
ASTM Standard F2144- 17 |
|
Large Vat Open Deep- Fat Electric Fryers |
≥ 80% |
≤ 1,100 watts |
|
TABLE C405.12(2)
MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL HOT FOOD HOLDING CABINETS
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
PRODUCT INTERIOR VOLUME (CUBIC FEET) |
MAXIMUM IDLE ENERGY CONSUMPTION RATE (WATTS) |
TEST PROCEDURE |
|
0 < V < 13 |
≤ 21.5 V |
ASTM Standard F2140-11 |
|
13 ≤ V < 28 |
≤ 2.0 V + 254.0 |
|
|
28 ≤ V |
≤ 3.8 V + 203.5 |
|
TABLE C405.12(3)
MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL STEAM COOKERS
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
FUEL TYPE |
PAN CAPACITY |
COOKING ENERGY EFFICIENCYa |
IDLE RATE |
TEST PROCEDURE |
|
Electric Steam |
3-pan |
50% |
400 watts |
ASTM Standard F1484-18 |
|
|
4-pan |
50% |
530 watts |
|
|
|
5-pan |
50% |
670 watts |
|
|
|
6-pan and larger |
50% |
800 watts |
|
|
Gas Steam |
3-pan |
38% |
6,250 Btu/h |
|
|
|
4-pan |
38% |
8,350 Btu/h |
|
|
|
5-pan |
38% |
10,400 Btu/h |
|
|
|
6-pan and larger |
38% |
12,500 Btu/h |
|
a. Cooking Energy Efficiency is based on heavy load (potato) cooking capacity.
TABLE C405.12(4)
MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL DISHWASHERS
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
MACHINE TYPE |
HIGH TEMP EFFICIENCY REQUIREMENTS |
LOW TEMP EFFICIENCY REQUIREMENTS |
TEST PROCEDURE |
|
|
Idle Energy Ratea |
Water Consumptionb |
Idle Energy Ratea |
Water Consumptionb |
|
|
Under Counter |
≤ 0.50 kW |
≤ 0.86 GPR |
≤ 0.50 kW |
≤ 1.19 GPR |
|
|
Stationary |
|
|
|
|
|
|
Single Tank |
≤ 0.70 kW |
≤ 0.89 GPR |
≤ 0.60 kW |
≤ 1.18 GPR |
ASTM F1696- |
|
Door |
|
|
|
|
18 |
|
Pot, Pan , and |
≤ 1.20 kW |
≤ 0.58 GPSF |
≤ 1.00 kW |
≤ 0.58 GPSF |
|
|
Utensil |
|
|
|
|
|
|
Single Tank |
≤ 1.50 kW |
≤ 0.70 GPR |
≤ 1.50 kW |
≤ 0.79 GPR |
|
|
Conveyor |
|
|
|
|
|
|
Multiple Tank |
≤ 2.25 kW |
≤ 0.54 GPR |
≤ 2.00 kW |
≤ 0.54 GPR |
|
|
Conveyor |
|
|
|
|
ASTM F1920- |
|
Single Tank |
Reported |
GPH ≤ 2.975x + |
Reported |
GPH ≤ 2.975x + |
15 |
|
Flight Type |
|
55.00 |
|
55.00 |
|
|
Multiple Tank |
Reported |
GPH ≤ 4.96x + |
Reported |
GPH ≤ 4.96x + |
|
|
Flight Type |
|
17.00 |
|
17.00 |
|
a. Idle results shall be measured with the door closed and represent the total idle energy consumed by the machine including all tank heater(s) and controls. Booster heater (internal or external) energy consumption should not be part of this measurement unless it cannot be separately monitored per US EPA Energy Star Commercial Dishwasher Specification Version 2.0.
b. GPR = gallons per rack; GPSF = gallons per square foot of rack; GPH = gallons per hour; x = sf of conveyer belt (i.e., W*L)/min (maximum conveyor speed
TABLE C405.12(5)
MINIMUM EFFICIENCY REQUIREMENTS: COMMERCIAL OVENS
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
FUEL TYPE |
CLASSIFICATION |
IDLE RATE |
COOKING-ENERGY EFFICIENCY, % |
TEST PROCEDURE |
|
Convection Ovens |
|
Gas |
Full-Size |
≤ 12,000 Btu/h |
≥ 46 |
ASTM F1496 - 13 |
|
Electric |
Half-Size |
≤ 1.0 Btu/h |
≥ 71 |
|
|
|
Full-Size |
≤ 1.60 Btu/h |
|
|
|
Combination Ovens |
|
Gas |
Steam Mode |
≤ 200Pa + 6,511 Btu/h |
≥ 41 |
ASTM F2861 - 17 |
|
|
Convection Mode |
≤ 150Pa + 5,425 Btu/h |
≥ 56 |
|
|
Electric |
Steam Mode |
≤ 0.133Pa + 0.6400 kW |
≥ 55 |
|
|
|
Convection Mode |
≤ 0.080Pa + 0.4989 kW |
≥ 76 |
|
|
Rack Ovens |
|
Gas |
Single |
≤ 25,000 Btu/h |
≥ 48 |
ASTM F2093 - 18 |
|
|
Double |
≤ 30,000 Btu/h |
≥ 52 |
|
a. P = Pan Capacity: The number of steam table pans the combination oven is able to accommodate as per the ASTM F1495-05 standard specification.
Section C405.12 Automatic receptacle control.
Section C405.12 - Delete Section C405.12 and Section C405.12.1 and a add new Section C405.13 and C405.13.1 to read as follows:
C405.13 Automatic receptacle control.
The following shall have automatic receptacle control complying with Section C405.13.1:
1. At least 50 percent of all 125V, 15- and 20-amp receptacles installed in enclosed offices, conference rooms, rooms used primarily for copy or print functions, breakrooms, classrooms and individual workstations, including those installed in modular partitions and module office workstation systems.
2. At least 25 percent of branch circuit feeders installed for modular furniture not shown on the construction documents.
C405.13.1 Automatic receptacle control function.
Automatic receptacle controls shall comply with the following:
1. Either split controlled receptacles shall be provided with the top receptacle controlled, or a controlled receptacle shall be located within 12 inches (304.8 mm) of each uncontrolled receptacle.
2. One of the following methods shall be used to provide control:
2.1. A scheduled basis using a time-of-day operated control device that turns receptacle power off at specific programmed times and can be programmed separately for each day of the week. The control device shall be configured to provide an independent schedule for each portion of the building of not more than 5,000 square feet (464.5 m2) and not more than one floor. The occupant shall be able to manually override an area for not more than 2 hours. Any individual override switch shall control the receptacles in a portion of the building not more than 5,000 feet (1524 m).
2.2. An occupant sensor control that shall turn off receptacles within 15 minutes of all occupants leaving a space.
2.3. An automated signal from another control or alarm system that shall turn off receptacles within 15 minutes after determining that the area is unoccupied.
3. All controlled receptacles shall be permanently marked in accordance with NFPA 70 and be uniformly distributed throughout the space.
4. Plug-in devices shall not comply.
Exceptions: Automatic receptacle controls are not required for the following:
1. Receptacles specifically designated for equipment requiring continuous operation (24 hours per day, 365 days per year).
2. Spaces where an automatic control would endanger the safety or security of the room or building occupants.
3. Within a single modular office workstation, noncontrolled receptacles are permitted to be located more than 12 inches (304.8 mm), but not more than 72 inches (1828 mm) from the controlled receptacles serving that workstation.
Section C405.13 Energy monitoring.
Section C405.13 - Delete Section C405.13, Section C405.13.1, Section C405.13.2, Table C405.13.2, Section C405.13.3, Section C405.13.4, Section C405.13.5, Section C405.13.6, Section C405.13.7, Section C405.13.8, Table C405.13.8, Section C405.13.9, Section C405.13.10 and Section C405.13.11 and add new Section C405.14, Section C405.14.1, Section C405.14.2, Table C405.14.2, Section C405.14.3, Section C405.14.4, Section C405.14.5, Section C405.14.6, Section C405.14.7, Section C405.14.8, Table C405.14.8, Section C405.14.9, Section C405.14.10 and Section C405.14.11 to read as follows:
C405.14 Energy monitoring.
New buildings with a gross conditioned floor area of 10,000 square feet (929 m2) or larger shall be equipped to measure, monitor, record and report energy consumption in accordance with Sections C405.14.1 through C405.14.6 for load categories indicated in Table C405.14.2 and Sections C405.14.7 through C405.14.11 for end-use categories indicated in Table C405.14.8.
Exceptions:
1. Dwelling units in R-2 occupancies.
2. Individual tenant spaces are not required to comply with this section provided that the space has its own utility services and meters and has less than 5,000 square feet (464.5 m2) of conditioned floor area.
C405.14.1 Electrical energy metering.
and its associated site, including but not limited to site lighting, parking, recreational facilities and other areas that serve the building and its occupants, meters or other measurement devices shall be provided to collect energy consumption data for each end-use category required by Section C405.14.2.
C405.14.2 End-use electric metering categories.
Meters or other approved measurement devices shall be provided to collect energy use data for each end-use category indicated in Table C405.14.2. Where multiple meters are used to measure any end-use category, the data acquisition system shall total all of the energy used by that category. Not more than 5 percent of the design load for each of the end-use categories indicated in Table C405.14.2 shall be permitted to be from a load that is not within that category.
Exceptions:
1. HVAC and water heating equipment serving only an individual dwelling unit shall not require end-use metering.
2. End-use metering shall not be required for fire pumps, stairwell pressurization fans or any system that operates only during testing or emergency.
3. End-use metering shall not be required for an individual tenant space having a floor area not greater than 2,500 square feet (232 m2) where a dedicated source meter complying with Section C405.14.3 is provided.
TABLE C405.14.2
ELECTRICAL ENERGY USE CATEGORIES
|
LOAD CATEGORY |
DESCRIPTION OF ENERGY USE |
|
Total HVAC system |
Heating, cooling and ventilation, including but not limited to fans, pumps, boilers, chillers and water heating. Energy used by 120-volt equipment, or by 208/120-volt equipment that is located in a building where the main service is 480/277-volt power, is permitted to be excluded from total HVAC system energy use. |
|
Interior lighting |
Lighting systems located within the building. |
|
Exterior lighting |
Lighting systems located on the building site but not within the building. |
|
Plug loads |
Devices, appliances and equipment connected to convenience receptacle outlets. |
|
Process load |
Any single load that is not included in an HVAC, lighting or plug load category and that exceeds 5 percent of the peak connected load of the whole building, including but not limited to data centers, manufacturing equipment and commercial kitchens. |
|
Building operations and other miscellaneous loads |
The remaining loads not included elsewhere in this table, including but not limited to vertical transportation systems, automatic doors, motorized shading systems, ornamental fountains, fireplaces, swimming pools, spas and snow-melt systems. |
|
Electric hot water heating for uses other than space conditioning |
Electricity used to generate hot water. Exception: Electric water heating with design capacity that is less than 10 percent of the building service rating. |
|
Electric vehicle charging |
Electric vehicle charging loads that are powered through the building's electrical service. |
C405.14.3 Electrical Meters.
Meters or other measurement devices required by this section shall be configured to automatically communicate energy consumption data to the data acquisition system required by Section C405.14.4. Source meters shall be allowed to be any digital-type meter. Lighting, HVAC or other building systems that can self-monitor their energy consumption shall be permitted instead of meters. Current sensors shall be permitted, provided that they have a tested accuracy of ±2 percent. Required metering systems and equipment shall have the capability to provide at least hourly data that is fully integrated into the data acquisition system and graphical energy report in accordance with Sections C405.14.4 and C405.14.5. Nonintrusive load monitoring (NILM) packages that extract energy consumption data from detailed electric waveform analysis shall be permitted to substitute for individual meters if the equivalent data is available for collection in Section C405.14.4 and reporting in Section C405.14.5.
C405.14.4 Electrical energy data acquisition system.
A data acquisition system shall have the capability to store the data from the required meters and other sensing devices for a minimum of 36 months. The data acquisition system shall have the capability to store real-time energy consumption data and provide hourly, daily, monthly and yearly logged data for each end-use category required by Section C405.14.2. The data acquisition system
shall have the capability of providing building total peak electric demand and the time(s) of day and time(s) per month at which the peak occurs. Peak demand shall be integrated over the same time period as the underlying whole-building meter reading rate.
C405.14.5 Graphical energy report.
A permanent and readily available reporting mechanism shall be provided in the building for access by building operation and management personnel. The reporting mechanism shall have the capability to graphically provide the energy consumption for each end-use category required by Section C405.14.2 not less than every hour, day, month and year for the previous 36 months.
C405.14.6 Renewable energy.
On-site renewable energy sources shall be metered with no less frequency than nonrenewable energy systems in accordance with Section 405.14.3.
C405.14.7 Nonelectrical energy submetering.
For all nonelectrical energy supplied to the building and its associated site that serves the building and its occupants, submeters or other measurement devices shall be provided to collect energy consumption data for each end-use category required by Section C405.14.8.
Exceptions:
1. HVAC and water heating equipment serving only an individual dwelling unit shall not require end-use submetering.
2. End-use submetering shall not be required for fire pumps, stairwell pressurization fans or any system that operates only during testing or emergency.
3. End-use submetering shall not be required for an individual tenant space having a floor area not greater than 2,500 square feet (232 m2) where a dedicated source meter complying with Section C405.14.9 is provided.
4. Equipment powered primarily by solid fuels serving loads other than building heating and service water heating loads.
C405.14.8 End-use nonelectrical submetering categories.
Submeters or other approved measurement devices shall be provided to collect energy use data for each end-use category indicated in Table C405.14.8. Where multiple submeters are used to measure any end-use category, the data acquisition system shall total all of the energy used by that category. Not more than 5 percent of the design load for each of the end-use categories indicated in Table C405.14.8 shall be permitted to be from a load that is not within that category.
TABLE C405.14.8
NONELECTRICAL ENERGY USE CATEGORIES
|
END USE CATEGORY |
DESCRIPTION OF END USE |
|
Total HVAC system |
Heating and cooling systems, including but not limited to boilers, chillers and furnaces. District heating and cooling energy entering the building’s distribution system shall be monitored at the point of entry to the building distribution system. |
|
Process loads |
Any single load that is not included in the HVAC or service water heating categories where the rated fuel gas or fuel oil input of the load and that is not less than 5 percent of the sum of the rated fuel gas or fuel oil input of all monitored equipment, including but not limited to manufacturing equipment, process equipment, commercial kitchens, and commercial laundry equipment. |
|
Other miscellaneous loads |
The remaining loads not included elsewhere in this table, including but not limited to fireplaces, swimming pools, spas, gas lighting, and snow-melt systems. |
|
Service water heating |
Fuel used to heat potable water. Exception: Water heating with design capacity that is less than 10 percent of the sum of the rated fuel gas or fuel oil input of all monitored equipment. |
C405.14.9 Nonelectrical submeters.
Submeters or other measurement devices required by this section shall be configured to automatically communicate energy consumption data to the data acquisition system required by Section C405.14.10. Source submeters shall be allowed to be any digital-type meter that can provide a digital output to the data acquisition system. Required submetering systems and equipment shall be fully integrated into the data acquisition system and graphical energy report that updates at least hourly in accordance with Sections C405.14.10 and C405.14.11.
C405.14.10 Nonelectrical energy data acquisition system.
A data acquisition system shall have the capability to store the data from the required submeters and other sensing devices for not less than 36 months. The data acquisition system shall have the capability to store real-time energy consumption data and provide hourly, daily, monthly and yearly logged data for each end-use category required by Section C405.14.8. The data acquisition system shall have the capability of providing building total nonelectrical peak demand and the time(s) of day and time(s) per month at which the peak occurs. Where applicable as determined by the authority having jurisdiction (AHJ), peak demand shall be integrated over the same time period as the underlying whole-building meter reading rate.
C405.14.11 Graphical energy report.
A permanent and readily accessible reporting mechanism shall be provided in the building that is accessible by building operation and management personnel. The reporting mechanism shall have the capability to graphically provide the nonelectrical energy consumption for each end-use category required by Section C405.14.8 not less than every hour, day, month and year for the previous 36 months. The graphical report shall incorporate natural gas interval data from the submeter or the ability to enter gas utility bills into the report.
Section C405.14 Reserved.
Section C405.14 - Delete Section C405.14, and add new Section C405.15, Section C405.15.1, Section C405.15.2, Section C405.15.3, Section C405.15.4, Section C405.15.5, Section C405.15.5.1, Section C405.15.5.2, Section C405.15.5.3, Section C405.15.5.3.1, Section C405.15.5.3.2, Section C405.15.6, Section C405.15.7 and Section C405.15.8 to read as follows:
C405.15 Electric vehicle power transfer infrastructure.
Electric vehicle power transfer infrastructure shall be provided in accordance with Sections C405.15.1 through C405.15.8.
C405.15.1 Quantity.
The amount of Electric Vehicle Service Equipment must comply with any state and local law, rule or regulation relating to such matter.
C405.15.2 EV ready spaces. Each branch circuit serving EV ready spaces used to meet the requirements of Section C405.15.1 shall comply with all of the following:
1. A minimum of 4.8 kVA (208/240 volt, 20-ampere) capacity wiring for R-2 occupancies and 8.3 kVA (208/240 volt, 40-ampere) capacity wiring for all other occupancies.
2. Terminate at a receptacle, located within 3 feet (914 mm) of each EV ready space it serves.
3. Have a minimum system and circuit capacity in accordance with C405.15.5.
4. The electrical distribution equipment directory shall designate the branch circuit as “Electric Vehicle Outlet.”
5. The outlet shall be marked “Electric Vehicle Outlet.”
C405.15.3 EVSE spaces. Installed EVSE with multiple output connections shall be permitted to serve multiple EVSE spaces. Each EVSE installed to meet the requirements of Section C405.15.1, serving either a single EVSE space or multiple EVSE spaces, shall comply with all of the following:
1. Have a minimum system and circuit capacity in accordance with Section 5.
2. Have a nameplate rating not less than 6.2 kW.
3. Be located within 3 feet (914 mm) of each EVSE space it serves.
4. Be installed in accordance with Section C405.15.6.
C405.15.4 EV DCFC spaces. Each branch circuit serving EV DCFC spaces used to meet the requirements of Section C405.15.1 shall comply with all of the following:
1. A minimum of 48 kVA (480 volt, 100-ampere) capacity wiring.
2. EVSE located within 3 feet (914 mm) of the parking space providing a minimum capacity of 80-ampere.
C405.15.5 System and circuit capacity. The system and circuit capacity shall comply with Section C405.15.5.1 and C405.15.5.2.
C405.15.5.1 System capacity. The electrical distribution equipment supplying the branch circuit(s) serving each EV ready space and EVSE space shall comply with one of the following:
1. Have a calculated load not less than 8.3 kVA or the nameplate rating of the equipment, whichever is larger, for each EV ready space and EVSE space.
2. Meets the requirements of Section C405.15.5.3.1
C405.15.5.2 Circuit capacity. The branch circuit serving each EV ready space and EVSE space shall comply with one of the following:
1. Have a rated capacity not less than 40 amperes.
2. Meets the requirements of Section C405.15.5.3.2.
C405.15.5.3 System and circuit capacity management. Where system and circuit capacity management is selected in Section C405.15.5.1(2) or Section C405.15.5.2(2), the installation shall comply with Sections C405.15.5.3.1 and C405.15.5.3.2.
C405.15.5.3.1 System capacity management. The maximum equipment load on the electrical distribution equipment supplying the branch circuits(s) serving EV ready spaces and EVSE spaces controlled by an energy management system shall be the maximum load permitted by the energy management system, but not less than 3.3 kVA per space. Where the energy management system serves EV DCFC spaces, the power demand from the EV DCFC spaces shall be prioritized above EV ready spaces required by Section C405.15.1.
C405.15.5.3.2 Circuit capacity management. Each branch circuit serving multiple EVSE spaces or EV ready spaces controlled by an energy management system shall have a minimum capacity of 20 amperes per space.
C405.15.6 EVSE installation. EVSE shall be installed in accordance with NFPA 70, shall be listed and labeled in accordance with UL 2202 or UL 2594 and shall meet the requirement of New York Codes Rules and Regulations Title 21 Chapter XI Section 509.12. EVSE shall be accessible in accordance with the New York City Building Code.
C405.15.7 EV charging infrastructure at off-street loading berths. One EV capable space for medium-duty and heavy-duty vehicles shall be provided for grocery, manufacturing facilities, retail, office buildings, and warehouses with accessory off-street loading berths, in accordance with NFPA 70 and shall comply with all of the following:
1. A continuous raceway or cable assembly shall be installed between an enclosure or outlet located within 10 feet (3048 mm) of the EV capable space and electrical distribution equipment.
2. The raceway shall be designed to provide no less than 200 kVA of power.
3. The electrical distribution equipment to which the raceway or cable assembly connects shall have sufficient dedicated overcurrent protection device space and spare electrical capacity to supply a calculated load of no less than 200 kVA of power.
C405.15.8 EV Signage. Electric vehicle ready parking spaces and electric vehicle charging stations shall be identified by signage denoting the availability and location of such parking spaces.
Section C405.15 Renewable energy systems.
Section C405.15 - Delete Section C405.15, Section C405.15.1, Section C405.15.2, Table C405.15.2, Section C405.15.2.1, Section C405.15.2.2, Section C405.15.3,and Section C405.15.4 and add new Section C405.16, Section C405.16.1, Section C405.16.2, Table C405.16.2, Section C405.16.2.1, Section C405.16.2.2, Section C405.16.3,and Section C405.16.4 to read as follows:
C405.16 Renewable energy systems.
Buildings shall comply with Sections C405.16.1 through C405.16.4.
C405.16.1 On-site renewable energy systems.
Buildings shall be provided with on-site renewable electricity generation systems with a direct current (DC) nameplate power rating of not less than 0.75 watts per square foot (8.1 W/m2) multiplied by the sum of the gross conditioned floor area of all floors, not to exceed the combined gross conditioned floor area of the three largest floors.
Exceptions: The following buildings or building sites shall comply with Section C405.16.2:
1. A building site located where an unshaded flat plate collector oriented toward the equator and tilted at an angle from horizontal equal to the latitude receives an annual daily average incident solar radiation less than 1.1 kBtu/ft2 per day (3.5 kWh/m2/day).
2. A building where more than 80 percent of the roof area is covered by any combination of permanent obstructions such as, but not limited to, mechanical equipment, vegetated space, access pathways or occupied roof terrace.
3. Any building where more than 50 percent of the roof area is shaded from direct beam sunlight by natural objects or by structures that are not part of the building for more than 2,500 annual hours between 8:00 a.m. and 4:00 p.m.
4. A building with gross conditioned floor area less than 5,000 square feet (465 m2).
C405.16.2 Off-site renewable energy.
Buildings that qualify for one or more of the exceptions to Section C405.16.1 or do not meet the requirements of Section C405.16.1 with an on-site renewable energy system shall provide to the building official an attestation of having procured off-site renewable electrical energy, in accordance with Sections C405.16.2.1 and C405.16.2.2, that shall be not less than the total off-site renewable electrical energy determined in accordance with Equation 4-11.
Equation 4-11
where:
TREoff = Total off-site renewable electrical energy in kilowatt-hours (kWh) to be procured in accordance with Table C405.16.2.
RENoff = Annual off-site renewable electrical energy from Table C405.16.2, in units of kilowatt- hours per watt of array capacity.
FLRA = The sum of the gross conditioned floor area of all floors not to exceed the combined floor area of the three largest floors.
IREon = Annual on-site renewable electrical energy generation of a new on-site renewable energy system, to be installed as part of the building project, whose rated capacity is less than the rated capacity required in Section C405.16.1.
TABLE C405.16.2
ANNUAL OFF-SITE RENEWABLE ENERGY REQUIREMENTS
|
CLIMATE ZONE |
ANNUAL OFF-SITE RENEWABLE ELECTRICAL ENERGY (kWh/W) |
|
1A, 2B, 3B, 3C, 4B and 5B |
1.75 |
|
0A, 0B, 1B, 2A, 3A and 6B |
1.55 |
|
4A, 4C, 5A, 5C, 6A and 7 |
1.35 |
C405.16.2.1 Off-site procurement.
The building owner, as defined in the New York City Building Code, shall procure and be credited for the total amount of off-site renewable electrical energy, not less than required in accordance with Equation 4-11, with one or more of the following:
1. Physical renewable energy power purchase agreement.
2. Financial renewable energy power purchase agreement.
3. Community renewable energy facility.
4. Off-site renewable energy system owned by the building property owner.
5. Renewable energy investment fund.
6. Green retail tariff.
The generation source shall be located where the energy can be delivered to the building site by any of the following:
1. Direct connection to the off-site renewable energy facility.
2. The local utility or distribution entity.
3. An interconnected electrical network where energy delivery capacity between the generator and the building site is available.
C405.16.2.2 Off-site contract.
The renewable energy shall be delivered or credited to the building site under an energy contract with a duration of not less than 15 years. The contract shall be structured to survive a partial or full transfer of ownership of the building property.
C405.16.3 Renewable energy certificate (REC) documentation.
The property owner or owner’s authorized agent shall demonstrate that where renewable energy certificates (RECs) or energy attribute certificates (EACs) are associated with on-site and off-site renewable energy production required by Sections C405.16.1 and C405.16.2, all of the following criteria for RECs and EACs shall be met:
1. The RECs and EACs are retained and retired by or on behalf of the property owner or tenant for a period of not less than 15 years or the duration of the contract in Section C405.16.2.2, whichever is less.
2. The RECs and EACs are created within a 12-month period of the use of the REC.
3. The RECs and EACs are from a generating asset placed in service not more than 5 years before the issuance of the certificate of occupancy.
C405.16.4 Renewable energy certificate purchase.
A building that qualifies for one or more of the exceptions to Section C405.16.1, and where it can be demonstrated to the code official that the requirements of Section C405.16.2 cannot be met, the building owner shall contract the purchase of renewable electricity products before the certificate of occupancy is issued. The purchase of renewable electricity products shall comply with the Green-e Energy National Standard for renewable electricity products equivalent to five times the amount of total off-site renewable energy calculated in accordance with Equation 4-11.
Section C405.16 Inverters.
Section C405.16 - Delete Section C405.16 in its entirety.
Section C405.17 Electrification Ready.
Section C405.17 - Delete Section C405.17 and add new Section C405.17 to read as follows:
C405.17 Inverters. Direct-current-to-alternating-current inverters serving on-site renewable energy systems or on-site electrical energy storage systems (ESS) shall be compliant with IEEE 1547 and UL 1741.
C405.18 Reserved.
Section C405.19 Electrical energy storage system.
Section C405.19 - Add new Section C405.19, Section C405.19.1, Section C405.19.2, Section C405.19.2.1, Section C405.19.2.2, Section C405.19.2.3, and Section C405.19.2.4 to read as follows:
C405.19 Electrical energy storage system. New buildings with an on-site photovoltaic system shall comply with Section C405.19.1 or Section C405.19.2 and with the New York City Fire Code.
C405.19.1 Electrical energy storage energy capacity. Each building shall have no fewer than one energy storage system (ESS) with a total rated energy capacity and rated power capacity as follows:
1. ESS rated energy capacity (kWh)≥1.0 x Installed On-site Renewable Electric Energy System Rated Power (kWDC).
2. ESS rated power capacity (kW)≥0.25 x Installed On-site Renewable Electric Energy System Rated Power (kWDC).
Where installed, DC coupled battery systems shall meet the requirements for rated energy capacity alone.
C405.19.2 Electrical energy storage system ready. Each building shall have one or more reserved ESS-ready areas to accommodate future electrical storage in accordance with Sections C405.19.2.1 through C405.19.2.4.
C405.19.2.1 ESS-ready location. Each ESS-ready area shall be located in accordance with of the New York City Fire Code.
C405.19.2.2 ESS-ready minimum area requirements. Each ESS-ready area shall be sized in accordance with the spacing requirements of the New York City Fire Code and the UL9540 or UL9540A designated rating of the planned system. Where rated to UL9540A, the area shall be sized in accordance with the manufacturer’s instructions.
C405.19.2.3 Electrical distribution equipment. The onsite electrical distribution equipment shall have sufficient capacity, rating, and space to allow installation of overcurrent devices and circuit wiring in accordance with the New York City Electrical Code for future electrical ESS installation complying with the capacity criteria of Section C405.19.2.4.
C405.19.2.4 ESS-ready minimum system capacity. Compliance with ESS-ready requirements in Sections C405.19.2.1 through C405.19.2.3 shall be based on a minimum total energy capacity and minimum rated power capacity as follows:
1. ESS rated energy capacity (kWh) ≥ gross conditioned floor area of the three largest floors (ft2) x 0.0008 kWh/ft2.
2. ESS rated power capacity (kWh) ≥ gross conditioned floor area of the three largest floors (ft2) x 0.0002 kWh/ft2.
SECTION C406
ADDITIONAL EFFICIENCY, RENEWABLE AND LOAD MANAGEMENT REQUIREMENTS
Section C406.1 Compliance
Section C406.1 - Delete Section C406.1 and add new Section C406.1 to read as follows:
C406.1 Compliance. New buildings shall comply with the requirements of Section 406.1.1. and core and shell buildings shall comply with Section 406.1.1.2. Substantial energy alterations shall comply with 15 percent of the credits required in the alteration area and the equipment serving it, for the building occupancy classification and climate zone. Buildings or spaces within buildings that are semiheated space shall achieve 50 percent of the credits required for the building occupancy classification and climate zone.
Section C406.1.1 Compliance.
Section C406.1.1 - Delete Section C406.1.1 and add new Section C406.1.1 to read as follows:
C406.1.1 Additional energy credit requirements. Buildings shall comply with measures from Section C406.2 to achieve not less than the number of required efficiency credits from Table C406.1.1(1) based on building occupancy group and climate zone. Buildings shall comply with measures from Section C406.3 to achieve not less than the number of required renewable and load management credits from Table C406.1.1(2) based on building occupancy and climate zone. Where a project contains multiple occupancies, the total required energy credits from each building occupancy shall be weighted by the gross conditioned floor area to determine the weighted-average project energy credits required. Accessory occupancies shall be included with the primary occupancy group for the purposes of Section C406.
Exceptions:
1. Group F occupancies within buildings.
2. Buildings or portions of buildings that comply with Section C402.1.1 or do not contain conditioned space.
Table C406.1.1(1) Energy Credit Requirements By Building Occupancy Group.
Table C406.1.1(1) - Delete Section Table C406.1.1(1) and add new Table C406.1.1(1) to read as follows:
TABLE C406.1.1(1)
ENERGY CREDIT REQUIREMENTS BY BUILDING OCCUPANCY GROUP
|
BUILDING OCCUPANCY GROUP |
CLIMATE ZONE |
|
|
|
4 |
5 |
6 |
|
R-2, R-4 and I-1 |
90 |
106 |
107 |
|
I-2 |
45 |
45 |
51 |
|
R-1 |
71 |
79 |
88 |
|
B |
107 |
110 |
107 |
|
A-2 |
52 |
59 |
67 |
|
M |
59 |
70 |
70 |
|
E |
64 |
77 |
82 |
|
S-1 and S-2 |
70 |
62 |
58 |
|
All other |
35 |
38 |
39 |
Informative Note: The number of credits required in the amended Table C406.1.1(1) is not directly comparable to the statewide base code. The NYCECC has a different overall performance level, redefining both the energy savings represented by credits and the additional savings targeted in the credits section. Only the new values are shown for individual occupancies’ base energy credits.
Table C406.1.1(2) Limit To Energy Efficiency Credit Carryover From Renewable And Load Management Credits.
Table C406.1.1(2) - Delete Section Table C406.1.1(2) and add new Table C406.1.1(2) to read as follows:
TABLE C406.1.1(2)
RENEWABLE AND LOAD MANAGEMENT CREDIT REQUIREMENTS BY BUILDING OCCUPANCY AND GROUP
|
BUILDING OCCUPANCY GROUP |
CLIMATE ZONE |
|
|
|
4 |
5 |
6 |
|
R-2, R-4 and I-1 |
14 |
6 |
13 |
|
I-2 |
14 |
13 |
14 |
|
R-1 |
32 |
28 |
25 |
|
B |
32 |
29 |
30 |
|
A-2 |
1 |
1 |
1 |
|
M |
19 |
21 |
28 |
|
E |
19 |
18 |
24 |
|
S-1 and S-2 |
67 |
54 |
70 |
|
All other |
22 |
21 |
23 |
Section C406.1.1.2 Building core/shell and build-out construction.
Section C406.1.1.2 - Delete item 3.3 from Section C406.1.1.2 in its entirety.
Section C406.1.2 Additional renewable and load management credit requirements.
Section C406.1.2 - Delete Section C406.1.2 and add new Section C406.1.2 to read as follows:
C406.1.2 Base and Measure energy credits. Energy credits are available for the measures listed in Section C406.2. Base energy credits (BEC) for each measure are shown in Tables C406.1.3(1) through C406.1.3(9) based on building occupancies and climate zones. Base energy credits shall be modified, where applicable, in compliance with Section C406.2 to create measure energy credits (MEC).
The sum of measure energy credits for individual measures included in the building shall count towards the total energy credits for the building.
Table C406.1.2 Renewable And Load Management Credit Requirements By Building Occupancy Group.
Table C406.1.1(2) - Delete Section Table C406.1.2 in its entirety.
Section C406.2 Additional energy efficiency credits achieved.
Section C406.2 - Revise Section C406.2 to read as follows:
C406.2 Additional energy efficiency credits achieved. Each energy efficiency credit measure used to meet credit requirements for the project shall have efficiency that is greater than the requirements in Sections C402 through C405. Measures installed in the project that meet the requirements in Sections C406.2.1 through C406.2.7 shall achieve the base energy credits (BEC) listed for the measure and occupancy type in Tables C406.1.3(1) through C406.1.3(9) or, where calculations required by Sections C406.2.1 through C406.2.7 create or modify the table credits, the credits achieved shall be based on the calculations. Measure energy credits (MEC) shall be determined by one of the following, as applicable:
1. The measure’s energy credit shall be the base energy credit from Tables C406.1.3(1) through C406.1.3(9) for the measure where no adjustment factor or calculation is included in the description of the measure in Section C406.2.
2. The measure’s energy credit shall be the base energy credit for the measure adjusted by a factor or equation as stated in the description of the measure in Section C406.2. Where adjustments are applied, each measure’s energy credit shall be rounded to the nearest whole number.
3. The measure’s energy credit shall be calculated as stated in the measure’s description in Section C406.2, where each individual measure credit shall be rounded to the nearest whole number.
Energy credits achieved for the project shall be the sum of the individual measure’s energy credits. Credits are available for the measures listed in this section. Where a project contains multiple building occupancy groups:
1. Credits achieved for each occupancy group shall be summed and then weighted by the conditioned floor area of each occupancy group to determine the weighted average project energy credits achieved.
2. Improved envelope efficiency (E01) and lighting reduction (L06) measure credits shall be determined for the building or permitted conditioned floor area as a whole. Credits for other measures shall be determined for each occupancy separately. Credits shall be taken from applicable tables or calculations for each occupancy and weighted by the building occupancy group floor area.
Table C406.1.2(1) Base Energy Credits For Group R-2, R-4 and I-1 Occupanciesa.
Table C406.1.2(1) - Delete Table C406.1.2(1) and add new Table C406.1.2(1) to read as follows:
TABLE C406.1.3(1)
BASE ENERGY CREDITS FOR GROUP R-2, R-4, AND I-1 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
C406.2.2.1 |
37 |
50 |
54 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
5 |
9 |
13 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
X |
|
H04 |
Residential HVAC control |
C406.2.2.4 |
19 |
21 |
19 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
38 |
50 |
66 |
|
H06 |
Cold-climate heat pumps |
C406.2.2.6 |
10 |
12 |
14 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
120 |
98 |
100 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
58 |
48 |
49 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
9 |
7 |
7 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
4 |
3 |
3 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
16 |
12 |
12 |
|
W08 |
Water heating system submeters |
C406.2.3.4 |
22 |
18 |
18 |
|
W09 |
Water heating distribution sizing |
C406.2.3.5 |
87 |
71 |
73 |
|
W10 |
Shower drain heat recovery |
C406.2.3.6 |
31 |
26 |
27 |
|
P01 |
Energy monitoring |
C406.2.4 |
3 |
3 |
3 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
1 |
1 |
1 |
|
L05 |
Residential light control |
C406.2.5.5 |
8 |
5 |
4 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
1 |
1 |
1 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
6 |
5 |
4 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
3 |
2 |
3 |
Table C406.1.2(2) Base Energy Credits For Group I-2 Occupanciesa.
Table C406.1.2(2) - Delete Table C406.1.2(2) and add new Table C406.1.2(2) to read as follows:
TABLE C406.1.3(2)
BASE ENERGY CREDITS FOR GROUP I-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Envelope Performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
6 |
7 |
10 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
x |
|
H04 |
Residential HVAC control |
C406.2.2.4 |
12 |
13 |
12 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
44 |
50 |
59 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
5 |
5 |
5 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
3 |
3 |
3 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
1 |
1 |
1 |
|
W10 |
Shower drain heat recovery |
C406.2.3.6 |
1 |
1 |
1 |
|
P01 |
Energy monitoring |
C406.2.4 |
1 |
1 |
1 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
3 |
3 |
3 |
|
L05 |
Residential light control |
C406.2.5.5 |
9 |
8 |
7 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
6 |
6 |
5 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
2 |
1 |
1 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
3 |
3 |
3 |
Table C406.1.2(3) Base Energy Credits For Group R-1 Occupanciesa.
Table C406.1.2(3) - Delete Table C406.1.2(3) and add new Table C406.1.2(3) to read as follows:
TABLE C406.1.3(3)
BASE ENERGY CREDITS FOR GROUP R-1 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
C406.2.2.1 |
66 |
75 |
84 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
3 |
5 |
8 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
X |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
23 |
27 |
37 |
|
H06 |
Cold-climate heat pumps |
C406.2.2.6 |
9 |
10 |
11 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
30 |
26 |
28 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
25 |
22 |
24 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
4 |
3 |
3 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
6 |
5 |
5 |
|
W09 |
Water heating distribution sizing |
C406.2.3.5 |
22 |
19 |
21 |
|
W10 |
Shower drain heat recovery |
C406.2.3.6 |
8 |
7 |
7 |
|
P01 |
Energy monitoring |
C406.2.4 |
2 |
2 |
2 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
1 |
1 |
1 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
1 |
1 |
1 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
3 |
2 |
2 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
2 |
1 |
2 |
Table C406.1.2(4) Base Energy Credits For Group B Occupanciesa.
Table C406.1.2(4) - Delete Table C406.1.2(4) and add new Table C406.1.2(4) to read as follows:
TABLE C406.1.3(4)
BASE ENERGY CREDITS FOR GROUP B OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
C406.2.2.1 |
54 |
60 |
59 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
3 |
5 |
8 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
1 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
31 |
42 |
57 |
|
H06 |
Cold-climate heat pumps |
C406.2.2.6 |
15 |
21 |
26 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
16 |
16 |
16 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
6 |
7 |
7 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
5 |
5 |
5 |
|
W05 |
Point of use water heaters |
C406.2.3.3 (1) |
24 |
24 |
24 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
6 |
6 |
6 |
|
P01 |
Energy monitoring |
C406.2.4 |
3 |
3 |
4 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
6 |
5 |
5 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
8 |
7 |
6 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
5 |
5 |
5 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
2 |
3 |
3 |
Table C406.1.2(5) Base Energy Credits For Group A-2 Occupanciesa.
Table C406.1.2(5) - Delete Table C406.1.2(5) and add new Table C406.1.2(5) to read as follows:
TABLE C406.1.3(5)
BASE ENERGY CREDITS FOR GROUP A-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
10 |
15 |
19 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
X |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
51 |
67 |
84 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
39 |
37 |
37 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
27 |
26 |
26 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
3 |
2 |
2 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
4 |
3 |
3 |
|
P01 |
Energy monitoring |
C406.2.4 |
2 |
2 |
3 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
2 |
1 |
1 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
2 |
2 |
2 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
1 |
0 |
0 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
2 |
3 |
3 |
Table C406.1.2(6) Base Energy Credits For Group M Occupanciesa.
Table C406.1.2(6) - Delete Table C406.1.2(6) and add new Table C406.1.2(6) to read as follows:
TABLE C406.1.3(6)
BASE ENERGY CREDITS FOR GROUP M OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
C406.2.2.1 |
45 |
63 |
65 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
17 |
23 |
27 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
x |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
88 |
108 |
120 |
|
H06 |
Cold-climate heat pumps |
C406.2.2.6 |
15 |
21 |
25 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
20 |
18 |
17 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
5 |
5 |
5 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
5 |
5 |
5 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
5 |
3 |
3 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
6 |
6 |
6 |
|
P01 |
Energy monitoring |
C406.2.4 |
6 |
6 |
7 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
3 |
1 |
0 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
5 |
3 |
2 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
4 |
4 |
3 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
5 |
5 |
6 |
Table C406.1.2(7) Base Energy Credits For Group E Occupanciesa.
Table C406.1.2(7) - Delete Table C406.1.2(7) and add new Table C406.1.2(7) to read as follows:
TABLE C406.1.3(7)
BASE ENERGY CREDITS FOR GROUP E OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
C406.2.2.1 |
38 |
53 |
60 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
4 |
8 |
14 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
x |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
38 |
51 |
71 |
|
H06 |
Cold-climate heat pumps |
C406.2.2.6 |
14 |
15 |
16 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
13 |
15 |
15 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
9 |
10 |
11 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
1 |
1 |
1 |
|
W05 |
Point of use water heaters |
C406.2.3.3 (1) |
5 |
5 |
5 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
1 |
1 |
1 |
|
W10 |
Shower drain heat recovery |
C406.2.3.6 |
3 |
3 |
3 |
|
P01 |
Energy monitoring |
C406.2.4 |
3 |
3 |
4 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
5 |
5 |
4 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
7 |
6 |
6 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
5 |
5 |
5 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
3 |
3 |
4 |
Table C406.1.2(8) Base Energy Credits For Group S-1 and S-2 Occupanciesa.
Table C406.1.2(8) - Delete Table C406.1.2(8) and add new Table C406.1.2(8) to read as follows:
TABLE C406.1.3(8) BASE ENERGY CREDITS FOR GROUP S-1 AND S-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope Performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
30 |
36 |
39 |
|
H03 |
Efficient space cooling equipment and fan performance |
C406.2.2.3 |
1 |
1 |
x |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
127 |
151 |
162 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
5 |
4 |
3 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
1 |
1 |
1 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
2 |
1 |
1 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
26 |
19 |
16 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
2 |
2 |
2 |
|
P01 |
Energy monitoring |
C406.2.4 |
9 |
9 |
11 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
9 |
6 |
6 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
12 |
8 |
8 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
15 |
11 |
9 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
8 |
9 |
12 |
Table C406.1.2(9) Base Energy Credits For Other Occupanciesa.
Table C406.1.2(9) - Delete Table C406.1.2(9) and add new Table C406.1.2(9) to read as follows:
TABLE C406.1.3(9)
BASE ENERGY CREDITS FOR OTHER OCCUPANCIES
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
C406.2.1 |
Determined in accordance with Section C406.2.1 |
|
H02 |
Efficient space heating equipment performance |
C406.2.2.2 |
10 |
13 |
17 |
|
H04 |
Residential HVAC control |
C406.2.2.4 |
20 |
23 |
21 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
C406.2.2.5 |
55 |
68 |
82 |
|
H06 |
Cold-climate heat pumps |
C406.2.2.6 |
6 |
8 |
9 |
|
W01 |
Recovered or renewable water heating |
C406.2.3.1 (1) |
31 |
27 |
28 |
|
W02 |
Heat pump water heater |
C406.2.3.1 (2) |
22 |
20 |
20 |
|
W04 |
Water heating pipe insulation |
C406.2.3.2 |
4 |
3 |
3 |
|
W05 |
Point of use water heaters |
C406.2.3.3 (1) |
15 |
15 |
15 |
|
W06 |
Thermostatic balance valves |
C406.2.3.3 (2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
C406.2.3.3 (3) |
5 |
5 |
5 |
|
W08 |
Water heating system submeters |
C406.2.3.4 |
22 |
18 |
18 |
|
W09 |
Water heating distribution sizing |
C406.2.3.5 |
55 |
45 |
47 |
|
W10 |
Shower drain heat recovery |
C406.2.3.6 |
3 |
3 |
3 |
|
P01 |
Energy monitoring |
C406.2.4 |
4 |
4 |
5 |
|
L02 |
Enhanced digital lighting controls |
C406.2.5.2 |
4 |
3 |
3 |
|
L05 |
Residential light control |
C406.2.5.5 |
6 |
4 |
4 |
|
L06 |
Reduced lighting power reduction |
C406.2.5.6 |
5 |
4 |
4 |
|
Q01 |
Efficient elevator and escalator equipment |
C406.2.6.1 |
5 |
4 |
4 |
|
Q04 |
Fault detection and diagnostics system |
C406.2.6.4 |
4 |
4 |
5 |
Section C406.2.1 More efficient building thermal envelope.
Section C406.2.1 - Delete Section C406.2.1, Section C406.2.1.1, Section C406.2.1.2, Section C406.2.1.3, Section C406.2.1.3, Section C406.2.1.4, Section C406.2.1.5, Section C406.2.1.6, Table C406.2.1.6 and add new Section C406.2.1 and Section C406.2.1.1 to read as follows:
C406.2.1 E01 Improved envelope performance ASHRAE 90.1 Appendix C.
C406.2.1.1 E01 Improved envelope performance ASHRAE 90.1 Appendix C. Building thermal envelope measures shall be installed to improve the energy performance of the project. The achieved energy credits shall be determined using Equation 4-13.
Equation 4-13 E01 MEC = 1,000 × (EPFB - EPFP)/EPFB where:
EPFB = base envelope performance factor calculated in accordance with 2025 NYC ASHRAE 90.1 Appendix C.
EPFP = proposed envelope performance factor calculated in accordance with 2025 NYC ASHRAE 90.1 Appendix C.
Section C406.2.2 More efficient HVAC equipment performance.
Section C406.2.2 - Revise Section C406.2.2 to read as follows:
C406.2.2 More efficient HVAC equipment performance. All heating and cooling systems shall meet the minimum requirements of Section C403 and efficiency improvements shall be referenced to minimum efficiencies listed in tables referenced by Section C403.3.2. Where multiple efficiency requirements are listed, equipment shall meet the seasonal or part-load efficiencies including SEER, SEER2, integrated energy efficiency ratio (IEER), integrated part load value (IPLV) or AFUE. Equipment that is larger than the maximum capacity range indicated in tables referenced by Section C403.3.2 shall utilize the values listed for the largest capacity equipment for the associated equipment type shown in the table. Where multiple individual heating or cooling systems serve the project, the improvement shall be the weighted-average improvement based on individual system capacity. Systems are permitted to achieve HVAC energy credits by meeting the requirements of one of the following:
1. C406.2.2.1 H01 HVAC total system performance ratio (TSPR)
2. C406.2.2.2 H02 More efficient space heating equipment performance
3. C406.2.2.3 H03 More efficient space cooling equipment and fan performance
4. C406.2.2.4 H04 Residential HVAC control
5. C406.2.2.5 H05 Dedicated outdoor sir system (DOAS)
6. C406.2.2.6 H06 Cold-climate heat pumps (CCHP)
7. Any combination of H02, H03, H04, H05, and H06
8. The combination of H01 or H06 with H02 when systems and building areas are separate from the systems and building areas claiming H02
Section C406.2.2.1 H01 HVAC Total System Performance Ratio (TSPR).
Section C406.2.2.1 - Revise Section C406.2.2.1 to read as follows:
C406.2.2.1 H01 HVAC Total System Performance Ratio (TSPR). H01 energy credits shall be determined as follows:
a. Where all HVAC systems in the scope of ASHRAE 90.1-2022* Section L1.1.1 meet the requirements of Section L2.1.2.1, Prescriptive Compliance Path, the H01 credit shall be calculated in accordance with Equation 4-15a.
Equation 4-15a H01 MEC = H01 BEC x (ATSPR /ATotal)
Where:
H01 BEC = H01 energy credits from Tables C406.1.3(1) through C406.1.3(9). For buildings that have multiple occupancies, H01 base energy credits shall be calculated as a weighted average based on gross conditioned floor area.
ATSPR = gross conditioned floor area served by the systems in the scope of ASHRAE 90.1-2022 Section L1.1.
ATotal = total building gross conditioned floor area.
b. Where all HVAC systems in the scope of ASHRAE 90.1-2022 Section L1.1.1 meet the requirements of Section L2.1.2.2, Modeling-based Compliance Path, the H01 credit shall be calculated in accordance with Equation 4-15b.
Equation 4-15-b H01 MEC = (TSPRp * MPF * H01BEC/TSPRr) x (ATSPR /ATotal)
If TSPRp<(TSPRr/MPF) * 0.95, then H01MEC=0
If TSPRp>1.2 * TSPRr/MPF then H01MEC = 1.2 * H01BEC
Where:
ATSPR = gross conditioned floor area served by the systems in the scope of 2025 NYC ASHRAE 90.1 Appendix L and claiming H01 credit.
ATotal = total building gross conditioned floor area.
TSPRp = proposed TSPR calculated in accordance with 2025 NYC ASHRAE 90.1 Section L2.1.5 and the requirements of Sections L2, L3, L4.
TSPRr = reference TSPR calculated in accordance with 2025 NYC ASHRAE 90.1 Section L2.1.5 and the requirements of Sections L2, L3 and L4.
MPF = mechanical performance factor calculated in accordance with 2025 NYC ASHRAE 90.1 Section L2.1.2.2
Section C406.2.2.2 H02 More efficient HVAC equipment heating performance.
Section C406.2.2.2 - Revise Section C406.2.2.2 to read as follows:
C406.2.2.2 H02 More efficient HVAC equipment heating performance. Not less than 90 percent of the total HVAC heating capacity serving the total conditioned floor area of the entire building or tenant space shall comply with the requirements of this section.
For buildings pursuing energy credits from H01 for the qualified systems, H02 energy credits for heating efficiency improvement shall be prorated based on conditioned floor area as shown in Equation 4-16 and apply to not less than 90 percent of the total space heating capacity excluded from H01. No heating equipment shall use fossil fuel sources to claim credit for H02.
1. Equipment installed shall be types that have their efficiency listed in tables referenced by Section C403.3.2 for heat pumps. Electric resistance heating capacity shall be limited to 25 percent of each system’s capacity, with the exception of heat pump supplemental heating.
2. Equipment shall exceed the minimum heating efficiency requirements listed in tables referenced by Section C403.3.2 by not less than 5 percent. Where equipment exceeds the minimum annual heating efficiency requirements by more than 5 percent, energy efficiency credits for heating shall be determined using Equation 4-16, rounded to the nearest whole number.
Equation 4-16 H02 MEC = H02 BEC × (HEI/0.05) x (1-ATSPR /ATotal) where:
HEI = The lesser of the improvement above minimum heating efficiency requirements, expressed as a fraction, or 20 percent (0.20). Where heating equipment with different minimum efficiencies are included in the building, a heating capacity weighted-average improvement shall be used. Where electric resistance primary heating or reheat is included in the building, it shall be included in the weighted-average improvement with an HEI of 0. For heat pumps rated at multiple ambient temperatures, the efficiency at 47°F (8.3°C) shall be used. The heating efficiency metric is HSPF (heating seasonal performance factor) for split and packaged heat pumps and packaged terminal heat pumps with nominal capacity less than 65,000 Btu/h (19 kW) and COPH for heat pumps with nominal capacity of 65,000 Btu/h (19 kW) or greater. For metrics that increase as efficiency increases, HEI shall be calculated as follows:
HEI = (HMDES /HMMIN ) - 1 where:
HMDES = Design heating efficiency metric, part-load or annualized where available.
HMMIN = Minimum required heating efficiency metric, part-load or annualized where available from Section C403.3.2.
ATSPR = gross conditioned floor area served by the systems in the scope of Appendix L and claiming H02 credit
ATotal = total building gross conditioned floor area
Section C406.2.2.3 H03 More efficient HVAC cooling equipment and fan performance.
Section C406.2.2.3 - Revise Section C406.2.2.3 to read as follows:
C406.2.2.3 H03 More efficient HVAC cooling equipment and fan performance. In accordance with Section C406.1.1, not less than 90 percent of the total HVAC cooling capacity serving the total conditioned floor area of the entire building or tenant space shall comply with all of the requirements of this section.
For buildings pursuing energy credits from H01 for the qualified systems, H03 energy credits for cooling and fan efficiency improvement shall be prorated based on conditioned floor area as shown in Equation 4-17 and apply to not less than 90 percent of the total space cooling capacity excluded from H01.
1. Equipment installed shall be types that are listed in tables referenced by Section C403.3.2.
2. Equipment shall exceed the minimum cooling efficiency requirements listed in tables referenced by Section C403.3.2 by not less than 5 percent. For water-cooled chiller plants, heat-rejection equipment performance in Table C403.3.2(7) shall also be increased by at least the chiller efficiency improvement. Where equipment classes have multiple ratings, the seasonal or part-load efficiency rating (SEER2, IEER) must exceed the minimum requirement by 5 percent, and the full-load efficiency rating (EER) must exceed minimum requirements. Where equipment exceeds both the minimum annual cooling efficiency and heat-rejection efficiency requirements by more than 5 percent, energy efficiency credits for cooling shall be determined using Equation 4-17, rounded to the nearest whole number.
Where fan energy is not included in the packaged equipment rating or it is and the fan size has been increased from the as-rated equipment condition, fan power or horsepower shall be less than 95 percent of the allowed fan power in Section C403.8.1.
Equation 4-17 H03 MEC = H03 BEC × (CEI/0.05) x (1-ATSPR /ATotal)
CEI = The lesser of the improvement above minimum cooling efficiency and heat-rejection performance requirements, expressed as a fraction, or 50 percent (0.50). Where cooling equipment with different minimum efficiencies is included in the building, a cooling capacity weighted-average improvement shall be used. Where multiple cooling efficiency or performance requirements are provided, the equipment shall exceed the annualized energy or part-load requirement. Air-to-water heat pumps shall have an assumed efficiency improvement of 5 percent over standard efficiency levels of Section C403.3.2 for the purpose of this credit. Meeting both part-load and full-load efficiencies is not required.
For metrics that increase as efficiency increases, CEI shall be calculated as follows:
CEI = (CMDES /CMMIN ) - 1.
For metrics that decrease as efficiency increases, CEI shall be calculated as follows:
CEI = (CMMIN /CMDES ) - 1. where:
CMDES = Design cooling efficiency metric, part-load or annualized where available.
CMMIN = Minimum required cooling efficiency metric, part-load or annualized where available from Section C403.3.2.
For data centers using ASHRAE Standard 90.4, CEI shall be calculated as follows:
CEI = (AMLCMAX /AMLCDES ) - 1 where:
AMLCDES = As-designed annualized mechanical load component calculated in accordance with ASHRAE Standard 90.4, Section 6.5.
AMLCMAX = Maximum annualized mechanical load component from ASHRAE Standard 90.4, Table 6.5.
ATSPR = gross conditioned floor area served by the systems in the scope of Appendix L and claiming H03 credit
ATotal = total building gross conditioned floor area
Section C406.2.2.5 H05 Dedicated outdoor air system.
Section C406.2.2.5 - Revise Section C406.2.2.5 to read as follows:
C406.2.2.5 H05 Dedicated outdoor air system. Credits for this measure are allowed only where single-zone HVAC units are not required to have multispeed or variable-speed fan control in accordance with Section C403.8.6.1. HVAC controls and ventilation systems shall include all of the following:
1. Zone controls shall cycle the heating/cooling unit fans off when not providing required heating and cooling.
2. Outdoor air shall be supplied by an independent ventilation system designed to provide not more than 110 percent of the minimum outdoor air to each individual occupied zone, as specified by the New York City Mechanical Code. Exception: Outdoor airflow is permitted to increase during emergency or economizer operation, implemented as described in Item 4.
3. The ventilation system shall have energy recovery with an enthalpy recovery ratio of 65 percent or more at heating design conditions and an enthalpy recovery ratio of 65 percent or more at cooling design conditions. Energy recovery shall include latent recovery. Where no humidification is provided, heating energy recovery effectiveness is permitted to be based on sensible energy recovery ratio. Where energy recovery effectiveness is less than the 65 percent required for full credit, adjust the credits from Section C406.2 by the factors in Table C406.2.2.5.
4. Where the ventilation system serves multiple zones and the system is not in a latent recovery outside air dehumidification mode, partial economizer cooling through an outdoor air bypass shall automatically do one of the following:
a. When the outside air temperature is lower than 60°F (16°C), set the energy recovery leaving-air temperature to 60°F (16°C) or lower, or 100 percent outdoor air bypass (wheel speed control not permitted) when a majority of zones require cooling and outdoor air temperature is below 70°F (21°C).
b. The HVAC ventilation system shall include supply-air temperature controls that automatically reset the supply-air temperature in response to outdoor air temperatures. The controls shall reset the supply-air temperature not less than 25 percent of the difference between the design supply-air temperature and the design room-air temperature.
5. Ventilation systems providing mechanical dehumidification shall use recovered energy for reheat within the limits of Item 4. This shall not limit the use of latent energy recovery for dehumidification.
The base energy credits shown in Tables C406.1.3(1) through C406.1.3(9) shall be prorated proportionately to the conditioned floor area served by single zone constant-volume HVAC units as follows:
Equation 4-18 H05 MEC = H05 BEC x CFA-DOAS / CFA-TOTAL
where:
CFA-DOAS = Conditioned Floor Area of all spaces served by DOAS units that also use single-zone, constant-volume systems meeting the criteria in Table C403.8.6.1 for space conditioning
CFA-TOTAL = Total Conditioned Floor Area of the Building
Section C406.2.2.6 H06 Cold-Climate Heat Pumps (CCHP).
Section C406.2.2.6 - Add new Section C406.2.2.5 to read as follows:
C406.2.2.6 H06 Cold-Climate Heat Pumps (CCHP).
To achieve this credit, at least 90 percent of the total installed space heating capacity shall be met by air-source cold-climate heat pumps meeting all of the following minimum requirements of the Northwest Energy Efficiency Partnerships (NEEP) Cold Climate Air-Source Heat Pump Specification Version 3.1:
1. For non-ducted systems: HSPF > 10.
2. For ducted systems: HSPF > 9.
3. COP at 5°F (-15°C) > 1.75 (at maximum capacity operation).
4. SEER > 15.
For buildings pursuing energy credits from H01 for the qualified systems, H06 energy credits for heating efficiency improvement shall be prorated based on conditioned floor area as shown in Equation 4-19 and apply to no less than 90 percent of the total space heating capacity excluded from H01. No heating equipment shall use fossil fuel sources to claim credit for H06.
Equation 4-19 H06 MEC = H06 BEC × (1-ATSPR /ATotal)
Where:
ATSPR = gross conditioned floor area served by the systems in the scope of Appendix L and claiming H01 credit
ATotal = total building gross conditioned floor area
Section C406.2.3 Reduced energy use in service water heating.
Section C406.2.3 - Revise Section C406.2.3 to read as follows:
C406.2.3 Reduced energy use in service water heating. For projects with service water heating equipment that serves the whole building, a building addition or a tenant space shall achieve credits through compliance with the requirements of this section. Systems are permitted to achieve energy credits by meeting the requirements of one or more of the following:
1. Section C406.2.3.1 by selecting one allowed measure W01 or W02.
2. Section C406.2.3.2 W04.
3. Section C406.2.3.3 by selecting one allowed measure: W05, W06 or W07.
4. Section C406.2.3.4 W08.
5. Section C406.2.3.5 W09.
6. Section C406.2.3.6 W10.
Section C406.2.3.1 Service water heating system efficiency.
Section C406.2.3.1 - Revise Section C406.2.3.1 to read as follows:
C406.2.3.1 Service water heating system efficiency. A project is allowed to achieve energy credits from only one of Sections C406.2.3.1.1 through C406.2.3.1.2.
Section C406.2.3.1.2 W02 Heat pump water heater.
Section C406.2.3.1.2 - Revise Section C406.2.3.1.2 to read as follows:
C406.2.3.1.2 W02 Heat pump water heater. Air-source heat pump water heaters shall be installed according to the manufacturer’s instructions and shall not draw conditioned air from within the building, except exhaust air that would otherwise be exhausted to the exterior. Any recirculating system and auxiliary water heating system shall be met with a separate heating source from the heat pump water heater. Requirements shall be in accordance with one of the following:
1. For multifamily, dormitories, and health care occupancies with a recirculating system, at least 30 percent of design end-use service water heating requirements shall be met using heat pump preheat with a coefficient of performance (COP) of not less than 4.0 tested at 50°F (10°C) entering air and 70°F (21°C) entering water in accordance with AHRI Standard 1300. A preheat storage tank equal to 25 percent of peak demand shall be included in the design.
2. For office, restaurant, and school occupancies with piping temperature maintenance, at least 30 percent of design end-use service water-heating requirements shall be met using heat pump preheat with a combined input-capacity-weighted-average Uniform Energy Factor (UEF) of 3.0 with a medium draw pattern for unitary equipment with either a heat trace system or a separate water heater in series for recirculating system and final heating.
3. For retail, office, and warehouse occupancies with no recirculating system, at least 30 percent of design end-use service water-heating requirements shall be met using the heat pump portion of a hybrid water heater with a combined input-capacity-weighted-average UEF of 3.0 with a medium draw pattern for unitary equipment, including electric resistance heating to meet peak loading.
Where the heat pump capacity at 50°F (10°C) entering air and 70°F (21°C) entering water exceeds 50 percent of the design end-use load, excluding recirculating system losses, the base credits from Section C406.1 shall be prorated based on Equation 4-20.
Equation 4-20 W02 MEC = W02 BEC × (HPlf/50%)
Where:
HPlf = Heat pump capacity at 50°F (10°C) entering air and 70°F (21°C) entering water as a fraction of the design end-use SHW requirements, excluding recirculating system losses, not to exceed 80 percent.
Section C406.2.3.1.3 W03 Efficient fossil fuel water heater.
Section C406.2.3.1.3 - Revise Section C406.2.3.1.3 to read as follows:
C406.2.3.1.3 Reserved.
Section C406.2.3.1.4 Combination service water heating systems.
Section C406.2.3.1.4 - Revise Section C406.2.3.1.4 to read as follows:
C406.2.3.1.4 Reserved.
Section C406.2.3.2 W04 Service water heating piping insulation increase.
Section C406.2.3.2 - Revise Section C406.2.3.2 to read as follows:
C406.2.3.2 W04 Service water heating piping insulation increase. Where service water heating is provided by a central water heating system, the hot water pipe insulation thickness shall be at least 1.5 times the thickness required in Section C404.4. All service water heating piping shall be insulated from the hot water source to the fixture shutoff. For Group S (warehouse and storage) and Group M (retail) occupancies, this measure is only available where a recirculation or heat trace system is used and piping length exceeds 80 linear feet (24 m).
Section C406.2.3.3 Service water-heating distribution temperature maintenance.
Section C406.2.3.3 - Revise Section C406.2.3.3 to read as follows:
C406.2.3.3 Service water-heating distribution temperature maintenance. A project is allowed to claim energy credits from only one of the following service water heating distribution temperature maintenance measures.
Section C406.2.3.3.1 W05 Point of use water heaters.
Section C406.2.3.3.1 - Add new Section C406.2.3.3.1 to read as follows:
C406.2.3.3.1 W05 Point of use water heaters. Credits are available for Group B or E buildings larger than 10,000 square feet (930 m2 ) where service water heating systems meet the following requirements:
1.1. Fixtures requiring hot water shall be supplied from a local water heater with no recirculating system or heat trace piping.
Exception: Commercial kitchens or showers in locker rooms shall be permitted to have a local recirculating system or heat trace piping where water heaters are located not more than 50 lineal feet (15 m) from the farthest fixture served.
1.2. Supply piping from the water heater to the termination of the fixture supply pipe shall be insulated to the levels shown in Table C404.4.1.
Exceptions:
1.Piping at locations where a vertical support of the piping is installed.
2.Where piping passes through a framing member and insulation requires increasing the size of the framing member.
1.3.The water volume in the piping from the water heater to the termination of any individual fixture shall be limited as follows:
1.3.1. Nonresidential public lavatory faucets that are available for use by members of the general public: not more than 2 ounces (59 mL).
1.3.2. Commercial kitchens or showers in locker rooms with recirculating systems or heat trace piping: not more than 24 ounces (710 mL) from the recirculating system or heat trace piping.
1.3.3. All other plumbing fixtures or appliances: not more than 16 ounces (473 mL).
Section C406.2.3.3.2 W06 Thermostatic balancing valves.
Section C406.2.3.3.2 - Add new Section C406.2.3.3.2 to read as follows:
C406.2.3.3.2 W06 Thermostatic balancing valves. Credits are available where service water heating is provided centrally and distributed throughout the building with a recirculating system. Each recirculating system branch return connection to the main service water heating supply piping shall have an automatic thermostatic balancing valve set to a minimal return water flow when the branch return temperature is greater than 115°F (46°C).
Section C406.2.3.3.3 W07 Heat trace system.
Section C406.2.3.3.3 - Add new Section C406.2.3.3.3 to read as follows:
C406.2.3.3.3 W07 Heat trace system. Credits are available for projects with gross floor area greater than 10,000 square feet (929 m2 ) and a central water heating system. This system shall include self-regulating electric heat cables, connection kits and electronic controls. The cable shall be installed directly on the hot water supply pipes underneath the insulation to replace standby losses.
Section C406.2.3.4 W08 Water-heating system submeters.
Section C406.2.3.4 - Revise Section C406.2.3.4 to read as follows:
C406.2.3.4 W08 Water-heating system submeters. Each individual dwelling unit in a Group R-2 occupancy served by a central service water heating system shall be provided with a service hot water meter connected to a reporting system that provides individual dwelling unit reporting of actual domestic hot water use. Preheated water serving the cold water inlet to showers need not be metered. Where other codes or regulations require individual dwelling unit hot water metering, energy credits for this measure shall not be allowed.
Section C406.2.3.5 W09 Service hot water sizing and flow reduction.
Section C406.2.3.5 - Revise Section C406.2.3.5 to read as follows:
C406.2.3.5 W09 Service hot water sizing and flow reduction. Dwelling unit, sleeping unit and guestroom plumbing fixtures that are connected to the service water-heating system shall be sized using IAPMO/ANSI WE-Stand - 2017 Water Efficiency and Sanitation Standard for the Built Environment and shall have a flow or consumption rating less than or equal to the values shown in Table C406.2.3.5. Where other codes or regulations require fixture flows to be equal to or less than those listed in Table C406.2.3.5, only half the base energy credits shall be allowed for this measure.
Section C406.2.3.6 W10 Shower drain heat recovery.
Section C406.2.3.6 - Revise Section C406.2.3.6 to read as follows:
C406.2.3.6 W10 Shower drain heat recovery. Cold water serving building showers shall be preheated by shower drain heat recovery units that comply with Section C404.7. Potable waterside pressure loss shall be less than 10 psi (69 kPa) at maximum design flow. The efficiency of drain heat recovery units shall be 54 percent or greater measured in accordance with CSA B55.1. Full credits are applicable to the following building uses: I-2, I-4, R-1, R-2 and also Group E where there are more than eight showers. Partial credits are applicable to buildings where all but ground floor showers are served where the base energy credit from Tables C406.1.3(1) through C406.1.3(9) is adjusted by Equation 4-21.
Equation 4-21 W10 MEC = W10 BEC × (showers with drain heat recovery / total showers in building)
Section C406.2.5 Energy savings in lighting systems.
Section C406.2.5 - Revise Section C406.2.5 to read as follows:
C406.2.5 Energy savings in lighting systems. Projects are permitted to achieve energy credits for increased lighting system performance by meeting the requirements of one of the following:
1. Section C406.2.5.2 L02.
3. Section C406.2.5.5 L05.
4. Section C406.2.5.6 L06.
5. Any combination of L02 through L06.
Section C406.2.5.2 L02 High-end trim lighting controls.
Section C406.2.5.2 - Revise Section C406.2.5.2 to read as follows:
C406.2.5.2 L02 High-end trim lighting controls. Measure credits shall be achieved where qualifying spaces are not less than 50 percent of the project interior floor area exclusive of dwelling and sleeping units. Qualifying spaces are those where general lighting complies with the following:
1. The calibration adjustment equipment is located, scheduled, and operated in accordance with Section C405.2 and shall be configured with the following enhanced control functions:
a. Luminaires shall be configured for continuous dimming.
b. Each luminaire shall be individually addressed.
Exceptions:
1. Multiple luminaires mounted on no more than 12 linear feet of a single lighting track and addressed as a single luminaire are not required to comply with Item b of this section.
2. Multiple linear luminaires that are ganged together to create the appearance of a single longer luminaire and addressed as a single luminaire are not required to comply with Item b of this section, provided that the total length of the combined luminaires is not more than 12 feet (4 m).
c. No more than eight luminaires within a daylight zone are permitted to be controlled by a single daylight responsive control.
2. Luminaires shall be controlled by a digital control system configured with the following capabilities:
a. Scheduling and illumination levels of individual luminaires and groups of luminaires are capable of being reconfigured through the system.
b. Load shedding.
c. In open and enclosed offices, the illumination level of overhead general illumination luminaires is configured to be individually adjusted by occupants.
d. Occupancy sensors and daylight responsive controls are capable of being reconfigured through the system.
3. Construction documents shall include submittal of a Sequence of Operations, including a specification outlining each of the functions required by this section.
4. High-end trim. Luminaires shall be initially configured with the following:
a. High-end trim, setting the maximum light output of individual luminaires or groups of luminaires to support visual needs of a space or area, shall be implemented and construction documents shall state that maximum light output or power of controlled lighting shall be initially reduced by at least 15 percent from full output. The average maximum light output or power of the controlled lighting shall be documented without high-end trim and with high-end trim to verify reduction of light output or power by at least 15 percent when tuned.
b. Where lumen maintenance control is used, controls shall be configured to limit the initial maximum lumen output or maximum lighting power to 85 percent or less of full light output or full power draw and lumen maintenance controls shall be limited to increasing lighting power by 1 percent per year.
c. High-end trim and lumen maintenance controls shall be accessible only to authorized personnel.
d. High-end trim lighting controls shall be tested in accordance with Section C408.3.1.5.
Where general lighting in more than 50 percent of the gross lighted floor area receives high-end trim, the base credits from Tables C406.1.3(1) through C406.1.3(9) shall be prorated as follows:
L02 MEC = HET × [L02 BEC]/50%
where:
HET = Floor area of qualifying spaces where general lighting is provided with high-end trim lighting controls complying with this section, expressed as a percentage of total interior floor area, excluding dwelling and sleeping units.
Where credit is achieved for both L02 and L06, the base credits from Tables C406.1.3(1) through C406.1.3(9) shall be prorated as determined as follows:
L02 MEC = [High end trim floor area, %] × [L02 BEC] / 50% * % LPD reduction lighting with high-end trim
Where:
High end trim floor area, % = the percentage of floor area where light fixtures comply with the requirements of L02 and L06.
Section C406.2.5.3 L03 Increase occupancy sensor.
Section C406.2.5.3 - Revise Section C406.2.5.3 to read as follows:
C406.2.5.3 L03 Reserved.
Section C406.2.5.3.1 Occupant sensor controls.
Section C406.2.5.3.1 - Delete Section C406.2.5.3.1 in its entirety.
Section C406.2.5.3.2 Occupant sensor control function.
Section C406.2.5.3.2 - Delete Section C406.2.5.3.2 in its entirety.
Section C406.2.5.3.3 Occupant sensor time delay and setpoint.
Section C406.2.5.3.3 - Delete Section C406.2.5.3.3 in its entirety.
Section C406.2.5.4 L04 Increased daylight area.
Section C406.2.5.4 - Revise Section C406.2.5.4 to read as follows:
C406.2.5.4 L04 Reserved.
Table C406.2.5.4 Added Daylighting Parameters.
Table C406.2.5.4 - Delete Table C406.2.5.4 in its entirety.
Section C406.2.5.5 L05 Residential light control.
Section C406.2.5.5 - Revise Section C406.2.5.5 to read as follows:
C406.2.5.5 L05 Residential light control. To achieve this credit, dwelling unit lighting systems shall comply with the following:
a. Each dwelling unit shall have a main control by the main entrance that turns off all the lights and all switched receptacles in the dwelling unit.
b. The main control shall be permitted to have two controls, one for permanently wired lighting and one for switched receptacles.
c. Where controls are divided the main controls shall be clearly identified as “lights master off” and “outlets master off.”
Section C406.2.5.6 L06 Reduced lighting power.
Section C406.2.5.6 - Revise Section C406.2.5.6 to read as follows:
C406.2.5.6 L06 Reduced lighting power. Interior lighting within all building areas shall comply with this section.
1. The connected interior lighting power (LP) determined in accordance with Section C405.3.1 shall be 95 percent or less than the interior lighting power allowance (LPA) determined in accordance with Section C405.3.2 using the same method used to comply with Section C405.3. Energy credits shall not be greater than four times the L06 base credit from Tables C406.1.3(1) through C406.1.3(9) and shall be determined using Equation 4-25a where LP is not greater than 80 percent of LPA and 4-25b where LP is greater than 80 percent of LPA but not greater than 95 percent of LPA.
Equation 4-25a
ECLPA = EC5 × 4
Equation 4-25b
ECLPA = EC5 × 20 × (LPA - LP)/LPA
where:
ECLPA = Additional energy credit for lighting power reduction.
LP = Connected interior lighting power calculated in accordance with Section C405.3.1, watts.
LPA = Interior lighting power allowance calculated in accordance with the requirements of Section C405.3.2, watts.
EC5 = L06 base credit from Tables C406.1.3(1) through C406.1.3(9).
2. All permanently installed lighting serving dwelling units and sleeping units, including ceiling fan light kits and lighting integrated into range hoods and exhaust fans shall be provided by lamps with an efficacy of not less than 90 lumens per watt or by luminaires that have an efficacy of not less than 65 lumens per watt. Permanently installed light fixtures with non-permanent lighting sources must use the maximum wattage approved for use by the manufacturer or other approved sources.
Exceptions:
1. Lighting integral to other appliances.
2. Antimicrobial lighting used for the sole purpose of disinfecting.
Section C406.2.6 Efficient equipment credits.
Section C406.2.6 - Revise Section C406.2.6 to read as follows:
C406.2.6 Efficient equipment credits. Projects are permitted to achieve energy credits using any combination of Efficient Equipment Credits Q01 and Q03.
Section C406.2.6.1 Q01 Efficient elevator equipment.
Section C406.2.6.1 - Revise Section C406.2.6.1 to read as follows:
C406.2.6.1 Q01 Efficient elevator equipment. Qualifying elevators in the building shall be energy efficiency class A per ISO 25745-2, Table 7. Only buildings three or more floors above grade may use this credit. Credits shall be prorated based on Equation 4-26, rounded to the nearest whole credit. Projects with a compliance ratio below 0.5 do not qualify for this credit. Measures installed for compliance with other sections of this code or other regulation do not qualify for this credit.
Equation 4-26 Q01 MEC = Q01 BEC × CRe
where:
CRe = Compliance ratio = FA/FB.
FA = Sum of floors served by class A elevators.
FB = Sum of floors served by all building elevators and escalators.
Section C406.2.6.2 Q02 Efficient commercial kitchen equipment.
Section C406.2.6.2 - Revise Section C406.2.6.2 to read as follows:
C406.2.6.2 Q02 Reserved.
Table C406.2.6.2(1) Minimum Efficiency Requirements: Commercial Fryers.
Table C406.2.6.2(1) - Delete Table C406.2.6.2(1) in its entirety.
Table C406.2.6.2(2) Minimum Efficiency Requirements: Commercial Steam Cookers.
Table C406.2.6.2(2) - Delete Table C406.2.6.2(2) in its entirety.
Table C406.2.6.2(3) Minimum Efficiency Requirements: Commercial Dishwashers.
Table C406.2.6.2(3) - Delete Table C406.2.6.2(3) in its entirety.
Table C406.2.6.2(4) Minimum Efficiency Requirements: Commercial Ovens.
Table C406.2.6.2(4) - Delete Table C406.2.6.2(4) in its entirety.
Section C406.2.6.3 Q03 Efficient residential kitchen equipment.
Section C406.2.6.3 - Revise Section C406.2.6.3 to read as follows:
C406.2.6.3 Q03 Reserved.
Section C406.3 Renewable and load management credits achieved.
Section C406.3 - Revise this first sentence of Section C406.3 to read as follows:
C406.3 Renewable and load management credits achieved. Renewable energy and load management measures shall not achieve full credit for measures installed to meet any other section of this code and shall achieve credits as follows:
Table C406.3(1) Renewable And Load Management Credits For Group R-2, R-4 and I-1 Occupancies.
Table C406.3(1) -Delete Table C406.3(1) and add new Table C406.3(1) to read as follows:
TABLE C406.3(1)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP R-2, R-4, AND I-1 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
10 |
9 |
9 |
|
G01 |
Lighting load management |
C406.3.2 |
11 |
8 |
5 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
2 |
10 |
1 |
|
G04 |
Electric energy storage |
C406.3.5 |
16 |
14 |
14 |
|
G05 |
Cooling energy storage |
C406.3.6 |
12 |
9 |
7 |
|
G06 |
SHW energy storage |
C406.3.7 |
19 |
19 |
18 |
|
G07 |
Building thermal mass |
C406.3.8 |
19 |
32 |
27 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(2) Renewable And Load Management Credits For Group I-2 Occupancies.
Table C406.3(2) -Delete Table C406.3(2) and add new Table C406.3(2) to read as follows:
TABLE C406.3(2)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP I-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
6 |
6 |
6 |
|
G01 |
Lighting load management |
C406.3.2 |
13 |
13 |
14 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
x |
x |
x |
|
G04 |
Electric energy storage |
C406.3.5 |
14 |
14 |
13 |
|
G05 |
Cooling energy storage |
C406.3.6 |
16 |
14 |
11 |
|
G06 |
SHW energy storage |
C406.3.7 |
4 |
4 |
4 |
|
G07 |
Building thermal mass |
C406.3.8 |
18 |
31 |
25 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(3) Renewable And Load Management Credits For Group R-1 Occupancies.
Table C406.3(3) -Delete Table C406.3(3) and add new Table C406.3(3) to read as follows:
TABLE C406.3(3)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP R-1 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
9 |
9 |
8 |
|
G01 |
Lighting load management |
C406.3.2 |
14 |
10 |
9 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
3 |
1 |
1 |
|
G04 |
Electric energy storage |
C406.3.5 |
14 |
14 |
13 |
|
G05 |
Cooling energy storage |
C406.3.6 |
18 |
15 |
12 |
|
G06 |
SHW energy storage |
C406.3.7 |
29 |
28 |
26 |
|
G07 |
Building thermal mass |
C406.3.8 |
17 |
30 |
26 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(4) Renewable And Load Management Credits For Group B Occupancies.
Table C406.3(4) -Delete Table C406.3(4) and add new Table C406.3(4) to read as follows:
TABLE C406.3(4)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP B OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
17 |
14 |
14 |
|
G01 |
Lighting load management |
C406.3.2 |
10 |
10 |
10 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
4 |
4 |
5 |
|
G04 |
Electric energy storage |
C406.3.5 |
17 |
17 |
16 |
|
G05 |
Cooling energy storage |
C406.3.6 |
17 |
15 |
12 |
|
G06 |
SHW energy storage |
C406.3.7 |
7 |
7 |
6 |
|
G07 |
Building thermal mass |
C406.3.8 |
4 |
9 |
8 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(5) Renewable And Load Management Credits For Group A-2 Occupancies.
Table C406.3(5) -Delete Table C406.3(5) and add new Table C406.3(5) to read as follows:
TABLE C406.3(5)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP A-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
2 |
2 |
2 |
|
G01 |
Lighting load management |
C406.3.2 |
4 |
4 |
4 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
x |
x |
x |
|
G04 |
Electric energy storage |
C406.3.5 |
4 |
3 |
4 |
|
G05 |
Cooling energy storage |
C406.3.6 |
5 |
3 |
2 |
|
G06 |
SHW energy storage |
C406.3.7 |
16 |
16 |
15 |
|
G07 |
Building thermal mass |
C406.3.8 |
6 |
8 |
6 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(6) Renewable And Load Management Credits For Group M Occupancies.
Table C406.3(6) -Delete Table C406.3(6) and add new Table C406.3(6) to read as follows:
TABLE C406.3(6)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP M OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
11 |
10 |
9 |
|
G01 |
Lighting load management |
C406.3.2 |
18 |
18 |
18 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
7 |
8 |
8 |
|
G04 |
Electric energy storage |
C406.3.5 |
11 |
10 |
11 |
|
G05 |
Cooling energy storage |
C406.3.6 |
17 |
11 |
9 |
|
G06 |
SHW energy storage |
C406.3.7 |
4 |
4 |
4 |
|
G07 |
Building thermal mass |
C406.3.8 |
7 |
14 |
13 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(7) Renewable And Load Management Credits For Group E Occupancies.
Table C406.3(7) -Delete Table C406.3(7) and add new Table C406.3(7) to read as follows:
TABLE C406.3(7)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP E OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
15 |
14 |
13 |
|
G01 |
Lighting load management |
C406.3.2 |
12 |
10 |
16 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
12 |
10 |
14 |
|
G04 |
Electric energy storage |
C406.3.5 |
22 |
23 |
20 |
|
G05 |
Cooling energy storage |
C406.3.6 |
24 |
20 |
16 |
|
G06 |
SHW energy storage |
C406.3.7 |
7 |
7 |
7 |
|
G07 |
Building thermal mass |
C406.3.8 |
21 |
37 |
31 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(8) Renewable And Load Management Credits For Group S-1 and S-2 Occupancies.
Table C406.3(8) -Delete Table C406.3(8) and add new Table C406.3(8) to read as follows:
TABLE C406.3(8)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP S-1 and S-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
36 |
29 |
24 |
|
G01 |
Lighting load management |
C406.3.2 |
31 |
32 |
36 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
x |
x |
x |
|
G04 |
Electric energy storage |
C406.3.5 |
30 |
21 |
24 |
|
G05 |
Cooling energy storage |
C406.3.6 |
5 |
2 |
1 |
|
G06 |
SHW energy storage |
C406.3.7 |
3 |
3 |
2 |
|
G07 |
Building thermal mass |
C406.3.8 |
18 |
28 |
20 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
Table C406.3(9) Renewable And Load Management Credits For OTHERa Occupancies.
Table C406.3(9) -Delete Table C406.3(9) and add new Table C406.3(9) to read as follows
TABLE C406.3(9)
RENEWABLE AND LOAD MANAGEMENT CREDITS FOR OTHERa OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
C406.3.1 |
13 |
12 |
11 |
|
G01 |
Lighting load management |
C406.3.2 |
14 |
13 |
14 |
|
G02 |
HVAC load management |
C406.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
C406.3.4 |
5 |
5 |
5 |
|
G04 |
Electric energy storage |
C406.3.5 |
16 |
15 |
14 |
|
G05 |
Cooling energy storage |
C406.3.6 |
14 |
11 |
9 |
|
G06 |
SHW energy storage |
C406.3.7 |
11 |
11 |
10 |
|
G07 |
Building thermal mass |
C406.3.8 |
14 |
24 |
20 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. a. Other occupancy groups include all Groups except for Groups A-2, B, E, I, M and R. |
Section C406.3.1 R01 Renewable energy.
Section C406.3.1 - Revise Section C406.3.1 to read as follows:
C406.3.1 R01 Renewable energy. Projects installing on-site renewable energy systems with a capacity of at least 0.1 watts per square foot (1.08 W/m2) of gross building area or securing off-site renewable energy shall achieve energy credits for this measure. Credit shall be achieved only for additional renewable energy beyond the requirements in Section C405.15 and calculated as follows:
Equation 4-28 ECR = EC0.1 × (Rt + Roff - Rex)/(0.1 × PGFA) where:
ECR = Section C406.3.1 R01 energy credits achieved for this project.
EC0.1 = Section C406.3.1 R01 base credits from Tables C406.3(1) through C406.3(9).
Rt = Actual total rating of on-site renewable energy systems (W).
Roff = Actual total equivalent rating of off-site renewable energy contracts (W), calculated as follows:
Roff = TRE/(REN × 20) where:
TRE = Total off-site renewable electrical energy in kilowatt-hours (kWh) that is procured in accordance with Sections C405.15.2.1 through C405.15.4.
REN = Annual off-site renewable electrical energy from Table C405.15.2, in units of kilowatt-hours per watt of array capacity.
Rex = Rating (W) of renewable energy resources capacity excluded from credit calculated as follows:
Rex = RRr + RRx + RRc where:
RRr = Rating of on-site renewable energy systems required by Section C405.15.1, without exception (W).
RRx = Rating of renewable energy resources used to meet any exceptions of this code (W).
RRc = Rating of renewable energy resources used to achieve other energy credits in Section C406 (W).
PGFA = Project gross floor area, ft2. Where renewable requirements, exceptions or credits are expressed in annual kWh or Btu rather than watts of output capacity, they shall be converted as 3413 Btu = 1 kWh and converted to W equivalent capacity as follows:
RRw = Actual total equivalent rating of renewable energy capacity (W), calculated as follows:
RRw = TREx /(REN × PGFA) where:
TREx = Total renewable energy in kilowatt-hours (kWh) that is excluded from R01 energy credits.
Section C406.3.7 G04 Electric Energy Storage.
Section C406.3.7 - Revise Section C406.3.7 to read as follows:
C406.3.7 G06: Service Hot-Water Thermal Storage.
To achieve this credit, where service hot water is heated by electricity, automatic controls activated by utility demand response signal, peak price period time control, or local building demand monitoring shall preheat stored service hot water before the peak-price period and suspend electric water heating during the period of peak prices coincident with peak building load. Storage capacity shall be provided by either of the following:
a. Preheating water above 140°F delivery temperature with at least 1.2 kWh of energy storage per kW of water heating capacity. Tempering valves shall be provided at the water heater delivery location. This option is not available where heat-pump water heating is used.
b. Providing additional heated water tank storage capacity above peak service hot-water demand with equivalent peak storage capacity to item (a).
SECTION C407
SIMULATED BUILDING PERFORMANCE
Section C407 Simulated Building Performance.
Section C407 - Delete Section C407 in its entirety and add Section C407 to read as follows:
SECTION C407
RESERVED
SECTION C408
MAINTENANCE INFORMATION AND SYSTEM COMMISSIONING
Section C408.2 Mechanical systems, renewable energy, and service water-heating systems commissioning and completion requirements.
Section C408.2 - Revise Section C408.2 to read as follows:
C408.2 Mechanical systems, renewable energy, and service water-heating systems commissioning and completion requirements.
Prior to the final mechanical and plumbing inspections, the approved agency shall provide evidence of mechanical systems commissioning and completion in accordance with the provisions of this section.
Construction document notes shall clearly indicate provisions for commissioning and completion requirements in accordance with this section and are permitted to refer to specifications for further requirements. Copies of all documentation shall be given to the owner or owner’s authorized agent and made available to the building official upon request in accordance with Sections C408.2.4 and C408.2.5.
Mechanical systems, renewable energy, and service water heating systems shall include but are not limited to, at a minimum, the following heating, ventilating, air conditioning, service water heating, indoor air quality and refrigeration systems (mechanical and/or passive) and associated controls:
1. Heating, cooling, air handling and distribution, ventilation, and exhaust systems, and their related air quality monitoring systems.
2. Air, water, and other energy recovery systems.
3. Manual or automatic controls, whether local or remote, on energy using systems including but not limited to temperature controls, setback sequences, and occupancy-based control, including energy management functions of the building management system.
4. Plumbing, including insulation of piping and associated valves, domestic and process water pumping, and mixing systems.
5. Mechanical heating systems and service water heating systems.
6. Refrigeration systems.
7. Renewable energy and energy storage systems.
8. Other systems, equipment and components that are used for heating, cooling or ventilation and that affect energy use.
Exceptions: The following systems are exempt:
1. Buildings with less than 10,000 square feet (929 m2) gross conditioned floor area and combined heating, cooling and service water heating capacity of less than 960,000 Btu/h (281 kW).
2. Components within dwelling units and sleeping units served by one of the following systems:
2.1. Simple unitary or packaged HVAC equipment listed in Table C403.3.2(1), C403.3.2(2), C403.3.2(4) or C403.3.2(5), each serving one zone and controlled by a single thermostat in the zone served.
2.2. Two-pipe heating systems installed in the dwelling, serving one or more zones .
3. Renewable energy systems being installed with a generating capacity of less than 25 kW.
Section C408.2.1 Commissioning plan.
Section C408.2.1 - Revise Item 2 from Section C408.2.1 to read as follows:
2. A listing of the specific equipment, appliances or systems to be tested their full sequences of operation, and a description of the tests to be performed, including prerequisite activities and reference to specific checklists or worksheets which are necessary or required by the department.
Section C408.2.2 Systems adjusting and balancing.
Section C408.2.2 - Revise Section C408.2.2 to read as follows:
C408.2.2 Systems adjusting and balancing. HVAC systems shall be balanced in accordance with ASHRAE 111, “Testing, Adjusting, and Balancing of Building HVAC Systems” or other accepted engineering standards. Air and water flow rates shall be measured and adjusted to deliver final flow rates within the tolerances provided in the product specifications. Test and balance activities shall include air system and hydronic system balancing.
Section C408.2.2.1 Air systems balancing.
Section C408.2.2.1 - Delete exception from Section C408.2.2.1.
Section C408.2.3.1 Air systems balancing.
Section C408.2.2.1 - Revise exception from Section C408.2.3.1 to read as follows:
Exception: Unitary or packaged HVAC equipment listed in the tables in Section C403.3.2 that do not require supply air economizers shall only be required to demonstrate functioning under full-load and part-load conditions.
Section C408.2.4 Preliminary commissioning report.
Section C408.2.4 - Revise the first sentence from Section C408.2.4 to read as follows:
A preliminary report of commissioning test procedures and results shall be completed and certified by the approved agency and provided to the building owner or owner’s authorized agent.
Section C408.2.4.1 Acceptance of report.
Section C408.2.4.1 - Revise Section C408.2.4 to read as follows:
C408.2.4.1 Acceptance of report. Buildings, or portions thereof, shall not be considered as acceptable for a final inspection pursuant to Chapter 1 of this code until the building official has received a letter of transmittal from the building owner acknowledging that the building owner or owner’s authorized agent has received the Preliminary Commissioning Report.
Section C408.2.5 Documentation requirements.
Section C408.2.5 - Delete Section C408.2.5, Section C408.2.5.1 and Section C408.2.5.2 and add new Section C408.2.5, Section C408.2.5.1, Section C408.2.5.2, Section C408.2.5.3, Section C408.2.5.4 to read as follows:
C408.2.5 Documentation requirements. The construction documents shall specify that the documents described in Sections C408.2.5.1 through C408.2.5.3 be provided to the building owner or owner’s authorized agent within 90 days of the date of receipt of the certificate of occupancy or letter of completion. The construction documents shall also specify that the Final Commissioning Report be provided to the building owner or owner’s authorized agent in accordance with the requirements of Section C408.2.5.4
C408.2.5.1 Drawings. Construction documents shall include the location and performance data on each piece of equipment.
C408.2.5.2 Manuals. An operating and maintenance manual shall be provided and include all of the following:
1. Submittal data stating equipment size and selected options for each piece of equipment requiring maintenance.
2. Manufacturer’s operation manuals and maintenance manuals for each piece of equipment requiring maintenance, except equipment not furnished as part of the project. Required routine maintenance actions shall be clearly identified.
3. Name and address of at least one service agency.
4. HVAC and service hot water controls system maintenance and calibration information, including wiring diagrams, schematics and control sequence descriptions. Desired or field-determined set points shall be permanently recorded on control drawings at control devices or, for digital control systems, in system programming instructions.
5. Submittal data indicating all selected options for each piece of lighting equipment and lighting controls.
6. Operation and maintenance manuals for each piece of lighting equipment. Required routine maintenance actions, cleaning and recommended relamping shall be clearly identified.
7. A schedule for inspecting and recalibrating all lighting controls.
8. A narrative of how each system is intended to operate, including recommended set points.
C408.2.5.3 System balancing report. A written report describing the activities and measurements completed in accordance with Section C408.2.2.
C408.2.5.4 Final commissioning report. Within 30 months for new buildings 500,000 gross square feet (46 452 m²) or greater, excluding R-2 occupancies, or within 18 months for R-2 occupancies and all other buildings, of the issuance of the certificate of occupancy or letter of completion, an approved agency shall prepare a report of test procedures and results, including test procedures and results performed after occupancy, identified as the "Final Commissioning Report,” provide such report to the building owner, and submit a certification to the department with applicable fees in accordance with department rules. The owner of a building 500,000 gross square feet (46 452 m²) or greater may apply for an extension of time to the building official based on good cause, in accordance with department rules. Such report shall include the following:
1. Results of functional performance tests.
2. Disposition of deficiencies found during testing, including details of corrective measures used or proposed.
3. Functional performance test procedures used during the commissioning process including measurable criteria for test acceptance, provided herein for repeatability.
Exception: Deferred tests that cannot be performed at the time of report preparation due to climatic conditions.
Section C408.3.1 Functional testing.
Section C408.3.1 - Revise the first sentence of Section C408.3.1 to read as follows:
Prior to passing final inspection, the approved agency shall provide evidence that the lighting and receptable control systems have been tested to ensure that control hardware and software are calibrated, adjusted, programmed and in proper working condition in accordance with the construction documents and manufacturer’s instructions.
Section C408.4 Air barrier commissioning. .
Section C408.4 - Add new Section C408.4, Section C408.4.1, Section C408.4.2, Section C408.4.3 to read as follows:
C408.4 Air barrier commissioning. For new buildings or additions that are 10,000 gross square feet (929 m2) and greater, prior to passing final inspection, the approved agency shall provide evidence of air barrier commissioning and substantial completion in accordance with the provisions of Sections C408.4.1 through C408.4.3.
C408.4.1 Documentation. Construction documents shall include documentation of the continuous air barrier components included in the design and a field inspection checklist that includes all requirements necessary for maintaining air barrier continuity and durability in accordance with Section C402.6.
C408.4.2 Field inspections. Reports from field inspections during project construction showing compliance with continuous air barrier requirements including proper material handling and storage, use of approved materials and material substitutes, proper material and surface preparation, and air barrier continuity shall be provided to the owner and, upon request, to the building official. Air barrier continuity shall be determined by testing or inspecting each type of unique air barrier joint or seam in the building envelope for continuity and defects.
C408.4.3 Report. A Final Commissioning Report indicating compliance with the continuous air barrier requirements shall be provided to the building owner and, upon request, to the building official.
SECTION C409
CALCULATION OF THE HVAC TOTAL SYSTEM PERFORMANCE RATIO
Section C409.1 Applicability.
Section C409.1 - Revise Section C409.1 to read as follows:
C409.1 Applicability. Use of the HVAC total system performance ratio (TSPR) method shall comply with the requirements in Section L2, “Mechanical System Performance Rating Method.” following either the Prescriptive TSPR Compliance Path in Section L2.1.2.1 or the Modeling-based TSPR Compliance Path in Section L2.1.2.2 of 2025 NYC ASHRAE 90.1
Section C409- Delete C409.2, C409.3, C409.4, C409.5, C409.6 and C409.7 in their entirety.
CHAPTER C5
EXISTING BUILDINGS
SECTION ECC C501
GENERAL
Section C501.1 Scope.
Section C501.1 - Revise Section C501.1 to read as follows:
C501.1 Scope. The provisions of this chapter shall control the alteration, repair, addition and change of occupancy of existing buildings and structures. This chapter shall not apply to alterations required to comply with new building provisions as determined by 28-101.4.5 of the New York City Administrative Code.
Section C501.2 Compliance.
Section C501.2 - Revise Section C501.2 to read as follows:
C501.2 Compliance. Additions, alterations, repairs, and changes of occupancy to, or relocation of, existing buildings and structures shall comply with Sections C502, C503, C504 and C505 of this code, as applicable, and with the provisions for alterations, repairs, additions and changes of occupancy or relocation, respectively, in the New York City Construction Codes, , New York City Fire Code, and the New York City Electrical Code.
Exception: Additions, alterations, repairs or changes of occupancy complying with 2025 NYC ASHRAE 90.1.
Section C501.6 Change in space conditioning.
Section C501.6 - Revise Section C501.6 to read as follows:
C501.6 Change in space conditioning. Any nonconditioned or low-energy building or space that is altered to become conditioned space shall be required to comply with Section C502.
Exception: Where the component performance alternative in Section C402.1.4 is used to comply with this section, the proposed EPF shall be not greater than 110 percent of the target EPF.
SECTION ECC C502
ADDITIONS
Section C502.1 General.
Section C502.1 - Revise Section C502.1 to read as follows:
C502.1 General. Additions to an existing building, building system or portion thereof shall conform to the provisions of this code as those provisions relate to new construction without requiring the unaltered portion of the existing building or building system to comply with this code. Additions shall not create an unsafe or hazardous condition or overload existing building systems. An addition shall be deemed to comply with this code if the addition alone complies or if the existing building and addition comply with this code as a single building. Altered portions of the building filed in conjunction with an addition shall comply with section C503.
Section C502.3.1 Vertical fenestration area.
Section C502.3.1 - Revise Item 1 from Section C502.3.1 to read as follows:
1. Where an addition has a new vertical fenestration area that results in a total building fenestration area less than or equal to that permitted by Section C402.5.1, the addition shall comply with Section C402.1.4, C402.5.3.
Section C502.3.1 - Revise Item 3 from Section C502.3.1 to read as follows:
3. Where an addition has vertical fenestration that results in a total building vertical fenestration area exceeding that permitted by Section C402.5.1.2, the addition shall comply with Section C402.1.4.
Section C502.3.2 Skylight area.
Section C502.3.2 - Revise Item 1 from Section C502.3.2 to read as follows:
1. Where an addition has new skylight area that results in a total building fenestration area less than or equal to that permitted by Section C402.5.1, the addition shall comply with Section C402.1.4.
Section C502.3.2 - Revise Item 3 from Section C502.3.2 to read as follows:
3. Where an addition has skylight area that results in a total building skylight area exceeding that permitted by Section C402.5.1.2, the addition shall comply with Section C402.1.4.
Section C502.3.4 Service water-heating systems.
Section C502.3.4 - Revise Section C502.3.4 to read as follows:
C502.3.4 Service water-heating systems. New service water-heating equipment, controls and service water-heating piping shall comply with Section C404 and C408.
Section C502.3.7 Additional energy efficiency credits.
Section C502.3.7 - Revise the first sentence of Section C502.3.7 to read as follows:
Additions shall comply with sufficient measures from Sections C406.2 to achieve not less than 50 percent of the number of required efficiency credits from Table C406.1.1(1) based on building occupancy group and climate zone.
Section C502.3.7 - Delete exception 5 from Section C502.3.7.
Section C502.3.9 Electric vehicle charging infrastructure.
Section C502.3.9 - Add new Section C502.3.9 to read as follows:
C502.3.9 Electric vehicle charging infrastructure. Where the addition includes a private garage, carport, parking space or a public parking garage, electric vehicle charging infrastructure shall be provided in accordance with Section C405.15.
SECTION ECC C503
ALTERATIONS
Section C503.1 General.
Section C503.1- Revise Section C503.1 to read as follows:
C503.1 General. Alterations to any building or structure shall comply with the requirements of Section C503. Alterations shall be such that the existing building or structure is not less conforming to the provisions of this code than the existing building or structure was prior to the alteration. Alterations to an existing building, building system or portion thereof shall conform to the provisions of this code as those provisions relate to new construction without requiring the unaltered portions of the existing building or building system to comply with this code. Subsequent subsections of section C503 shall not be construed as limiting the scope of C503.1 through omission. Alterations shall not create an unsafe or hazardous condition or overload existing building systems.
Exception: The following types of work need not comply with the requirements for new construction, provided that the energy use of the building is not increased:
1. Storm windows installed over existing fenestration.
2. Surface-applied window film installed on existing single-pane fenestration assemblies reducing solar heat gain, provided that the code does not require the glazing or fenestration to be replaced.
5. Roof recover.
4. Roof replacement where roof assembly insulation is integral to or located below the structural roof deck.
6. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
5. Air barriers shall not be required for roof recover and roof replacement where the alterations or renovations to the building do not include alterations, renovations or repairs to the remainder of the building thermal envelope.
6. Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates such conditioned space from the exterior shall not be removed.
Section C503.2 Building thermal envelope.
Section C503.2 - Revise Section C503.2 to read as follows:
C503.2 Building thermal envelope. Alterations of existing building thermal envelope assemblies shall comply with this section. New building thermal envelope assemblies that are part of the alteration shall comply with Section C402. An area-weighted average U-factor for new and altered portions of the building thermal envelope shall be permitted to satisfy the U-factor requirements in Section C402.1.4. The existing R-value of insulation shall not be reduced or the U-factor of a building thermal envelope assembly be increased as part of a building thermal envelope alteration.
Exception: Where the existing building exceeds the fenestration area limitations of Section C402.5.1 prior to alteration, the building is exempt from Section C402.5.1 provided that there is no increase in fenestration area.
Section C503.2.1 Roof replacement.
Section C503.2.1 - Revise the exception from Section C503.2.1 to read as follows:
Exceptions: Where replacement of ceiling finishes exposes cavities of the roof-ceiling construction, that is part of the building thermal envelope, the cavities shall be insulated to full depth with insulation that complies with Section C303.1.4 and having a minimum nominal value of R-3.5 per inch.
Section C503.2.2 Vertical fenestration.
Section C503.2.2 - Revise Section C503.2.2 to read as follows :
C503.2.2 Vertical fenestration. The addition of vertical fenestration that results in a total building fenestration area less than or equal to that specified in Section C402.5.1 shall comply with Section C402.1.4, C402.5.3. The addition of vertical fenestration that results in a total building fenestration area greater than Section C402.5.1 shall comply with Section C402.5.1.1 for the space adjacent to the new fenestration only. Alterations that result in a total building vertical fenestration area exceeding that specified in Section C402.5.1.1 shall comply with Section C402.1.4.
Section C503.2.3 Skylight area.
Section C503.2.3 - Revise Section C503.2.3 to read as follows:
C503.2.3 Skylight area. New skylight area that results in a total building skylight area less than or equal to that specified in Section C402.5.1 shall comply with Section C402.1.4, C402.5. The addition of skylight area that results in a total building skylight area greater than Section C402.5.1 shall comply with Section C402.5.1.2 for the space adjacent to the new skylights. Alterations that result in a total building skylight area exceeding that specified in Section C402.5.1.2 shall comply with Section C402.1.4.
Section C503.2.4 Above-grade wall alterations.
Section C503.2.4 - Revise Item 2 from Section C503.2.4 to read as follows:
2. Where wall cavities are exposed, the cavities shall be insulated to full depth with insulation complying with Section C303.1.4 and having a minimum nominal value of R-3.5 per inch.
Section C503.3 Heating and cooling systems.
Section C503.3 - Revise Section C503.3 to read as follows:
C503.3 Heating and cooling systems. New heating, cooling, piping and duct systems that are part of the alteration shall comply with Sections C403 and C408. Alterations to heating, cooling duct, and piping systems shall comply with Sections C403 and C408.
Section C503.3.4 Controls.
Section C503.3.4 - Revise Section C503.3.4 to read as follows:
C503.3.4 Controls. New HVACR systems that are part of the alteration shall be provided with controls that comply with Section C403.4. Altered controls shall comply with Section C403.4. Where controls are altered for more than 50% of the terminal distribution elements of a heating or cooling system, the controls for all commonly served terminal distribution elements and the associated, immediately upstream plant equipment shall comply with section C403.4 as new.
Exceptions:
1. Controls for terminal distribution elements located in a space occupied by a different tenant than the altered space.
2. Control provisions of section C403.4 which are impossible to achieve without an alteration of otherwise unaltered non-control elements of the associated, immediately upstream plant equipment.
Section C503.3.5 System sizing.
Section C503.3.3 - Revise Section C503.3.5 to read as follows:
C503.3.5 System sizing. New heating, cooling and ventilation systems that is part of an alteration shall be sized in accordance with Section C403.1.1 based on the existing building features as modified by the alteration.
Exception:
1. Where it is demonstrated to the building official that compliance with this section would result in heating or cooling equipment that is deemed by the commissioner incompatible with the rest of the heating or cooling system.
2. Where it has been demonstrated to the building official that the additional capacity will be needed in the future.
Section C503.6 Additional energy efficiency credit requirements for alterations.
Section C503.6 - Revise Section C503.6 to read as follows:
C503.6 Additional energy efficiency credit requirements for alterations. Alterations that are substantial energy alterations shall comply with measures from Sections C406.2 to earn not less than 15 percent of the number of required credits specified in Table C406.1.1(1) based on building occupancy group and climate zone. Where a project contains multiple occupancies, credits specified in Table C406.1.1(1) for each building occupancy shall be weighted by the gross conditioned floor area to determine the weighted average credits required. Accessory occupancies, other than Group F or H, shall be included with the primary occupancy group for the purposes of this section. In mixed-use buildings where one or more occupancies are not part of the alteration, the credit requirement shall be calculated based on only the occupancies that are part of the alteration.
Exceptions:
1. Alterations that do not contain conditioned space.
2. Portions of buildings devoted to manufacturing or industrial use.
3. Alterations that comply with C401.2.2.
4. Alterations that are permitted with an addition complying with Section C502.3.7.
Section C505.1 General
Section C505.1 - Delete the exception to Section C505.1.
Section C505.2.1 Building thermal envelope.
Section C505.2.1 - Revise Section C505.2.1 to read as follows:
C505.2.1 Building thermal envelope. Where a change of occupancy results in a fenestration area greater than the maximum fenestration area allowed by Section C402.5.1, the building shall comply with Section C402.1.4, with a proposed EPF that shall be not greater than 110 percent of the target UA.
Exception: Where the change of occupancy or use is made to a building or a portion of the building that is less than 2,000 square feet, the new occupancy is exempt from Section C402.5.1, provided that there is not an increase in fenestration area.
Table C505.2.2-Building Mechanical Systems.
Table C505.2.2- Revise Table C505.2.2 to read as follows:
TABLE C505.2.2-BUILDING MECHANICAL SYSTEMS
|
ENERGY USE INTENSITY RANK |
NEW YORK CITY BUILDING CODE OCCUPANCY CLASSIFICATION AND USE |
|
High |
A-2, B (laboratories), I-2 |
|
Medium |
A-1, A-3,a A-4, A-5, B,b E, I-1, I-3, I-4, M |
|
Low |
A-3 (places of religious worship), R-1, R-2, R-3,c S-1, S-2, F, H, U |
a. Excluding places of religious worship.
b. Excluding laboratories.
c. Buildings three stories or less in height above grade plane shall comply with Section R505.
Table C505.2.3-Service Water Heating.
Table C505.2.3- Revise Table C505.2.3 to read as follows:
TABLE C505.2.3-SERVICE WATER HEATING
|
ENERGY USE INTENSITY RANKNEW YORK CITY BUILDING CODE OCCUPANCY CLASSIFICATION AND USE |
|
|
High |
A-2, I-1, I-2, R-1 |
|
Low |
All other occupancies and uses |
Table C505.2.4-Lighting.
Table C505.2.4- Revise Table C505.2.4 to read as follows:
TABLE C505.2.4-LIGHTING
|
ENERGY USE INTENSITY RANKNEW YORK CITY BUILDING CODE OCCUPANCY CLASSIFICATION AND USE |
|
|
High |
B (laboratories), B (outpatient healthcare), I-2, M |
|
Medium |
A-2, A-3 (courtrooms), B,a I-1, I-3, I-4, R-1, R-2, R-3,b R-4, S-1, S-2 |
|
Low |
A-1, A-3,c A-4, E |
a. Excluding laboratories and outpatient healthcare.
b. Buildings three stories or less in height above grade plane shall comply with Section R505.
c. Excluding courtrooms.
CHAPTER C6
REFERENCE STANDARDS
Add new normative references as follows:
|
UL |
UL LLC 333 Pfingsten Road Northbrook, IL 60062 |
|
9540-2023 |
Energy Storage Systems and Equipment |
CHAPTER R2
DEFINITIONS
SECTION R201
GENERAL
Section R201.1 Scope.
Section R201.1 - Revise Section R201.1 to read as follows:
R201.1 Scope. Unless stated otherwise, the words and terms provided in italics within this code shall have the meanings as defined in Section R202, C202 or as defined within the chapter or appendix where the word or term is found, except as provided in Sections R201.3 and R201.4.
Section R201.3 Terms defined in other codes.
Section R201.3 - Revise Section R201.3 to read as follows:
R201.3 Terms defined in other codes. Where italicized words and terms are not defined in this code but are defined in the New York City Construction Codes, New York City Fire Code, or the New York City Electrical Code shall have the meanings ascribed to them in those codes.
Section R202
GENERAL DEFINITIONS
Section R202 - Delete the definitions of “Building Code of New York State,” “Existing Building Code of New York State,” “Fire Code of New York State,” “Fuel Gas Code of New York State,” “Mechanical Code of New York State,” “Plumbing Code of New York State,” ”Property Maintenance Code of New York State,” “Residential Code of New York State,” and “Uniform Code.”
Section R202 - Add the definitions of “2025 NYC ASHRAE 90.1” after the definition of “2025 NYS ASHRAE 90.1.” to read as follows:
2025 NYC ASHRAE 90.1. New York City amendments to 2025 NYS ASHRAE 90.1
Section R202 - Delete the definitions of “Approved,” “Approved agency,” after the definition of “Alteration.”
Section R202 - Add the definitions of “Alteration area,” “Annual site energy use,” “Annual solar access “Approved,” “Approved agency,” after the definition of “Alteration,” to read as follows:
ALTERATION AREA. The enclosed spaces marked on the submittal plans to be impacted by the alteration.
ANNUAL SITE ENERGY USE. The total amount of energy a building consumes on its property in one year
ANNUAL SOLAR ACCESS. The ratio of total annual solar radiation, accounting for shading obstructions, divided by the area of total annual solar radiation, unobstructed.
APPROVED. See Section 28-101.5 of the Administrative Code.
APPROVED AGENCY. See Section 28-101.5 of the Administrative Code.
Section R202 - Delete the definitions of “Area-weighted average,” “Authority having jurisdiction,” after the definition of “Approved source.”
Section R202 - Add the definitions of “Area-weighted average,” “Authority having jurisdiction,” after the definition of “Approved source.” to read as follows:
AREA WEIGHTED AVERAGE. A mathematical technique for combining different amounts of various components, based on proportional relevance, into a single number. Weighted averaging may be used where there is more than one insulation or thermal resistance value for floor, wall, ceiling insulation, for fenestration in a building. As an example, the area weighted average for window fenestration U-factors equals (Area 1 × U-factor 1) + (Area 2 × U-factor 2) + …/Total Area = weighted average fenestration U-factor.
AUTHORITY HAVING JURISDICTION. The governmental unit or agency responsible for administration and enforcement of the New York City Building Codes and NYCECC.
Section R202 - Delete the definitions of “Basement wall,” after the definition of “Balanced ventilation system.”
Section R202 - Add the definitions of “Basement or cellar, Energy Code,” “Basement wall,” “Below-grade wall,” after the definition of “Balanced ventilation system.” to read as follows:
BASEMENT OR CELLAR, ENERGY CODE. A story that is not a story above grade plane. See the definition of “Story above grade plane.”
BASEMENT WALL. See “Below-grade wall”
BELOW-GRADE WALL. A wall 50 percent or more of the total surface area is below adjoining grade and enclosing conditioned space.
Section R202 - Delete the definitions of “Building official,” after the definition of “Building.”
Section R202 - Add the definitions of “Building official” after the definition of “Building.” to read as follows:
BUILDING OFFICIAL. The Commissioner of Buildings of the City of New York or his or her duly authorized representative. See Section 28-101.5 of the Administrative Code.
Section R202 - Delete the definitions of “Building Thermal Envelope,” after the definition of “Building System.”
Section R202 - Add the definitions of “Building Thermal Envelope” after the definition of “Building System.to read as follows:
BUILDING THERMAL ENVELOPE. The exterior walls, floors, ceilings, slabs, roofs, fenestration and any other building element assemblies (above and below grade) that enclose conditioned space or provide a boundary between conditioned space and exempt or unconditioned space.
Section R202 - Add the definitions of “Commissioner” after the definition of “Commercial building.” to read as follows:
COMMISSIONER. The commissioner of buildings of the city of New York, or his or her duly authorized representative.(See “Authority Having Jurisdiction” and “Building official”)
Section R202 - Add the definitions of “Double-wall framing” after the definition of “Commercial building.” to read as follows:
DOUBLE-WALL FRAMING. Any framing method that ensures a continuous layer of insulation covering the studs, such as offset double-stud walls, aligned double-stud walls with continuous insulation between the adjacent stud faces, or single-stud walls with 2x2 or 2x3 cross-framing. In all cases, insulation shall fill the entire wall cavity from the interior to exterior sheathing except at windows, doors and other penetrations.
Section R202 - Add the definitions of “Electric vehicle,” “Electric vehicle supply equipment (EVSE),” “Electric vehicle supply equipment installed space (EVSE SPACE),” “Electric vehicle ready space (EV READY SPACE)” after the definition of “Dwelling unit.” to read as follows:
ELECTRIC VEHICLE (EV). An automotive-type vehicle for on-road use, such as passenger automobiles, buses, trucks, vans, neighborhood electric vehicles and electric motorcycles, primarily powered by an electric motor that draws current from a building electrical service, electric vehicle supply equipment (EVSE), a rechargeable storage battery, a fuel cell, a photovoltaic array or another source of electric current.
ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE). Equipment for plug-in power transfer, including ungrounded, grounded and equipment grounding conductors; electric vehicle connectors; attached plugs; any personal protection system; and all other fittings, devices, power outlets or apparatus installed specifically for the purpose of transferring energy between the premises wiring and the electric vehicle.
ELECTRIC VEHICLE SUPPLY EQUIPMENT INSTALLED SPACE (EVSE SPACE). An automobile parking space where operational EVSE has been installed.
ELECTRIC VEHICLE READY SPACE (EV READY SPACE). An automobile parking space that is provided with a branch circuit and a receptacle for connection to EVSE.
Section R202 - Delete the definitions of “Enclosed Reflective Airspace,” after the definition of “Emittance.”
Section R202 - Add the definitions of “Embodied Carbon, ” “Enclosed Reflective Airspace.” after the definition of “Emittance.” to read as follows:
EMBODIED CARBON: The total greenhouse gas emissions associated with the life cycle of building materials and products, excluding operational emissions from the building itself.
ENCLOSED REFLECTIVE AIRSPACE. An unventilated cavity with at least one low-emittance surface adjacent to an empty air space bounded on all sides by building components.
Section R202 - Delete the definitions of “Energy code,” “Energy cost,” after the definition of “Energy analysis.”
Section R202 - Add the definitions of “Energy code, ” “Energy Management system.” after the definition of “Energy analysis.” to read as follows:
ENERGY CODE. The New York City Energy Conservation Code.
ENERGY MANAGEMENT SYSTEM. A system that manages electrical power demand and is comprised of monitor(s), communications equipment, controller(s), timer(s), and other applicable devices.
Section R202 - Add the definitions of “Energy storage system (ESS),” after the definition of “Energy simulation tool.” to read as follows:
ENERGY STORAGE SYSTEM (ESS). One or more devices, assembled together, capable of storing energy in order to supply electrical energy at a future time.
Section R202 - Delete the definitions of “Grade Plane,” after the definition of “Fuel oil.”
Section R202 - Add the definitions of “Grade Plane, Energy,” after the definition of “Fuel Oil.” to read as follows:
GRADE PLANE, ENERGY. A reference plane representing the average of the finished ground level adjoining the building at all exterior walls. Where the finished ground level slopes away from the exterior walls, the reference plane is established by the lowest points within the area between the building and the lot line or, where the lot line is more than 6 feet (1829 mm) from the building, between the structure and a point 6 feet (1829 mm) from the building.
Section R202 - Delete the definitions of “Market value,” after the definition of “Manual.”
Section R202 - Add the definitions of “Photovoltaic system” after the definition of “Opaque door.” to read as follows:
PHOTOVOLTAIC SYSTEM. A system that incorporates discrete photovoltaic panels that convert solar radiation into electricity, including rack support systems.
Section R202 - Add the definitions of “Professional certification,” “Project” after the definition of “Plenum.” to read as follows:
PROFESSIONAL CERTIFICATION. See Section 28-101.5 of the Administrative Code.
PROJECT. A design and construction undertaking comprised of work related to one or more buildings and the site improvements. A project is represented by one or more plan/work applications, including construction documents compiled in accordance with Section 107 of the New York City Building Code, that relate either to the construction of a new building or buildings or to the demolition or alteration of an existing building or buildings. Applications for a project may have different registered design professionals and different job numbers, and may result in the issuance of one or more permits.
Section R202 - Add the definitions of “Shading obstructions” after the definition of “Service water heating.” to read as follows:
SHADING OBSTRUCTIONS. Existing permanent natural or manmade objects external to or part of the building that cast shadow over a site for more than 2500 annual hours between 8:00 a.m. and 4:00 p.m.
Section R202 - Delete the definitions of “Solar Heat Gain Coefficient (SHGC)” after the definition of “Sleeping unit.”
Section R202 - Add the definitions of “Solar Heat Gain Coefficient (SHGC),” “Solar zone.” after the definition of “Sleeping unit.” to read as follows:
SOLAR HEAT GAIN COEFFICIENT (SHGC). The ratio of the solar heat gain entering the space through the fenestration assembly to the incident solar radiation. Solar heat gain includes directly transmitted solar heat and absorbed solar radiation that is then re-radiated, conducted or transferred by convection into the space.
SOLAR ZONE. The area of roof space that has not less than 70 percent annual solar access. On a pitched roof, the solar zone includes areas between 90 degrees and 300 degrees of true north. The solar zone does not include roof area covered by permanent obstructions, vegetated space, access, pathways, smoke ventilation, skylights, mechanical equipment and occupied roof terrace.
Section R202 - Delete the definitions of “Substantial improvement,” “Substantially complete building permit application.” after the definition of “Steep Slope.”
Section R202 - Add the definitions of “Story,” “Story above grade plane,” “Substantial Energy Alteration, “ “Substantially complete building permit application. ” after the definition of “Steep slope.” to read as follows:
STORY. The portion of a building included between the upper surface of a floor and the upper surface of the floor or roof next above. See the definitions of “Basement or Cellar, Energy Code and “Grade plane, Energy Code.” A story is measured as the vertical distance from top to top of two successive tiers of beams or finished floor surfaces and, for the topmost story, from the top of the floor finish to the top of the ceiling joists or, where there is not a ceiling, to the top of the roof rafters.
STORY ABOVE GRADE PLANE. Any story having its finished floor surface entirely above grade plane, or in which the finished surface of the floor next above is:
1. More than 6 feet (1829 mm) above average grade plane; or
2. More than 12 feet (3658 mm) above the finished ground level at any point.
SUBSTANTIAL ENERGY ALTERATION. An alteration that includes replacement of two or more of the following:
1. HVAC equipment or systems that account for more than 50 percent of the capacity serving either the heating or cooling loads of the alteration area. This includes HVAC unitary systems, HVAC terminal units, or components of HVAC central heating or cooling equipment. HVAC terminal units, for the purposes of this section, can include VAV boxes, fan-coil units, VRF room units, or water-loop heat pumps;
2. 50 percent or more of the luminaires in the alteration area;
3. 25 percent or more of the surface area of exterior building envelope enclosing the alteration area.
Section R202 - Add the definitions of “Thermal Bridges” after the definition of “Testing unit enclosure area.” to read as follows:
THERMAL BRIDGES. A structural element or interface of elements that has higher thermal conductivity than the surrounding building thermal envelope, which creates a path of decreased resistance for heat transfer.
CLEAR FIELD THERMAL BRIDGE. Elements of a building envelope assembly creating paths of decreased resistance for heat transfer which repeat at regular intervals, such as metal or wood studs, girts, and purlins.
CHI-FACTOR (χ-FACTOR). The heat loss factor for a single thermal bridge characterized as a point element of a building thermal envelope (Btu/h x °F) [W/K].
Linear thermal bridge: a length-based element associated with horizontal, vertical, or diagonal elements that penetrates the insulation in the building thermal envelope and with a length measured along an exterior surface of the building thermal envelope, such as balconies, parapet-, roof-, floor-, or fenestration intersections, and shelf angles.
OVERALL U-FACTOR. U-factor of above grade walls that includes clear field-, linear-, and point thermal bridges.
POINT THERMAL BRIDGE. An element that penetrates the insulation in the building thermal envelope, such as columns or beams passing through envelope assemblies, attachments, anchors, and connections not defined as clear field- or linear thermal bridges. The cross-sectional area is measured at the external surface of the outermost penetrated insulation layer.
PSI-FACTOR (ψ-FACTOR). The heat loss factor per unit length of a thermal bridge characterized as a linear element of a building thermal envelope (Btu/h x ft x °F) [W/(m x K)].
CHAPTER R3
GENERAL REQUIREMENTS
SECTION ECC R301
CLIMATE ZONES
Section R301.1 General.
Section R301.1 - Revise Section R301.1 to read as follows:
R301.1 General. For projects in the City of New York, Climate Zone 4A shall be used in determining the applicable requirements from Chapter R4.
SECTION R303
MATERIALS, SYSTEMS AND EQUIPMENT
Section R303.1.1 Building thermal envelope insulation.
Section R303.1.1 - Revise the Exception to Section R303.1.1 to read as follows:
Exception: For roof insulation installed above the deck, the R-value shall be labeled as required by the material standards specified in New York City Building Code.
Section R303.1.2 Insulation mark installation.
Section R303.1.2 - Revise the Exception to Section R303.1.2 to read as follows:
Exception: For roof insulation installed above the deck, the R-value shall be labeled as specified by the material standards in the New York City Building Code
Section R303.1.3 Fenestration product rating.
Section R303.1.3 - Revise Section R303.1.3 to read as follows:
R303.1.3 Fenestration product rating. U-factors of fenestration products such as windows, doors and skylights shall be determined in accordance with NFRC 100.
Exception: Where required, garage door U-factors shall be determined in accordance with either NFRC 100 or ANSI/DASMA 105.
U-factors shall be determined by a third-party accredited, independent laboratory, recognized by ANSI, ILAC or MiRa and labeled and certified by the manufacturer.
Products lacking such a labeled U-factor shall be assigned a default U-factor from Table R303.1.3(1) or Table R303.1.3(2). The solar heat gain coefficient (SHGC) and visible transmittance (VT) of glazed fenestration products such as windows, glazed doors and skylights shall be determined in accordance with NFRC 200 an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled SHGC or VT shall be assigned a default SHGC or VT from Table R303.1.3(3).
Section R303.1.6 Airspaces.
Section R303.1.6 - Revise Section R303.1.6 to read as follows:
R303.1.6 Airspaces. Where the R-value of an enclosed reflective airspace or enclosed nonreflective airspace is used for compliance with this code, the airspace shall be enclosed in a cavity bounded on all sides by building components and constructed to minimize airflow into and out of the enclosed airspace. Airflow shall be deemed minimized where one of the following conditions occur:
1. The enclosed airspace is unventilated.
2. The enclosed airspace is bounded on one or more sides by an anchored masonry veneer, constructed in accordance with the New York City Building Code, and vented by veneer weep holes located only at the bottom portion of the airspace and spaced not less than 15 inches (381 mm) on center with the top of the cavity airspace closed.
Exception: For ventilated cavities, the effect of the ventilation of airspaces located on the exterior side of the continuous air barrier and adjacent to and behind the exterior wall covering material shall be determined in accordance with ASTM C1363, modified with an airflow entering the bottom and exiting the top of the airspace at an air movement rate of not less than 70 millimeters per second.
Section R303.2 Installation.
Section R303.2- Revise Section R303.2 to read as follows:
R303.2 Installation. Materials, systems and equipment shall be installed in accordance with the manufacturer’s instructions and the provisions of the New York City Construction Codes.
CHAPTER R4
RESIDENTIAL ENERGY EFFICIENCY
SECTION R401
GENERAL
Section R401.3 Certificate.
Section R401.3 - Revise Section R401.3 to read as follows:
R401.3 Certificate. A permanent certificate shall be completed by the builder or other approved party and posted on a wall in the space where the furnace is located, a utility room or an approved location inside the building. Where located on an electrical panel, the certificate shall not cover or obstruct the visibility of the circuit directory label, service disconnect label or other required labels. The certificate shall indicate the following:
1. The predominant R-values of insulation installed in or on ceilings, roofs, walls, foundation components such as slabs, below-grade walls, crawl space walls and floors and ducts outside conditioned spaces.
2. U-factors of fenestration and the solar heat gain coefficient (SHGC) of fenestration. Where there is more than one value for any component of the building thermal envelope, the certificate shall indicate both the value covering the largest area and the area weighted average value if available.
3. The results from any required duct system and building thermal envelope air leakage testing performed on the building.
4. The types, sizes and efficiencies of heating, cooling and service water-heating equipment. Where a gas-fired unvented room heater, electric furnace or baseboard electric heater is installed in the residence, the certificate shall indicate “gas-fired unvented room heater,” “electric furnace” or “baseboard electric heater,” as appropriate. An efficiency shall not be indicated for gas-fired unvented room heaters, electric furnaces and electric baseboard heaters.
5. Where on-site photovoltaic panel systems have been installed, the array capacity, inverter efficiency, panel tilt and orientation shall be noted on the certificate.
6. For buildings where an Energy Rating Index score is determined in accordance with Section R406, the Energy Rating Index score, both with and without any on-site generation, shall be listed on the certificate.
7. The code edition under which the structure was permitted, and the compliance path used and, where applicable, the additional efficiency measures selected for compliance with Section R408.
8. The location and dimensions of a solar-ready zone where one is provided.
SECTION R402
BUILDING THERMAL ENVELOPE
Section R402.1 General.
Section R402.1 - Revise Section R402.1 to read as follows:
R402.1 General. The building thermal envelope shall comply with the requirements of one of the following:
1. Sections R402.1.1 through R402.1.4 and Section R402.1.6, and R402.2 through R402.7.
2. Sections R402.1.1, R402.1.5 and R402.1.6, and R402.2 through R402.7.
Section R402.1.1 General.
Section R402.1.1 - Revise Section R402.1.1 to read as follows:
R402.1.1 Vapor retarder. Wall assemblies in the building thermal envelope shall comply with the vapor retarder requirements of the New York City Building Code, as applicable.
Table R402.1.2 Insulation and Fenestration Requirements by Componenta
Revise Table R402.1.2 to read as follows:
TABLE R402.1.2
MAXIMUM ASSEMBLY U-FACTORS AND FENESTRATION REQUIREMENTSa
|
Climate Zone |
4 |
5 |
6 |
|
Vertical Fenestration U-factor |
0.25 |
0.25c |
0.25c |
|
Skylight U-factor |
0.30 |
0.30 |
0.30 |
|
Glazed Vertical Fenestration SHGCc,d,f |
0.40 |
0.32 |
0.36 |
|
Skylight SHGCd |
0.40 |
0.32 |
0.36 |
|
Ceiling U-factor |
0.026 |
0.024 |
0.024 |
|
Insulation Entirely Above Roof Deck |
0.032 |
0.032 |
0.032 |
|
Wood Frame Wall U-factor |
0.040 |
0.040 |
0.040 |
|
Mass Wall U-factorb |
0.045 |
0.045 |
0.045 |
|
Floor U-factor |
0.031 |
0.031 |
0.031 |
|
Below-grade Wall U-factor |
0.045 |
0.045 |
0.045 |
|
Unheated Slab F-Factord |
0.47 |
0.47 |
0.47 |
|
Heated Slab F-Factord |
0.46 |
0.46 |
0.46 |
|
Crawl Space Wall U-factor |
0.045 |
0.045 |
0.045 |
For SI: 1 foot = 304.8 mm.
a. Nonfenestration U-factors and F-factors shall be obtained from measurement, calculation, an approved source, or Appendix RF where such appendix is adopted or approved.
b. Mass walls shall be in accordance with Section R402.2.6. Where more than half the insulation is on the interior, the mass wall U-factor shall not exceed 0.045.
c. Reserved
d. F-factors for slabs shall correspond to the R-values of Table R402.1.3 and the installation conditions of Section R402.2.10.1.
f. If the Projection Factor is greater than 0.2 but less than 0.5, the maximum SHGC shall be 0.43. If the Projection Factor is greater than 0.5, then the maximum SHGC shall be 0.58
Table R402.1.3 Insulation and Fenestration Requirements by Componenta
Revise Table R402.1.3 to read as follows:
TABLE R402.1.3
INSULATION MINIMUM R-VALUES AND FENESTRATION REQUIREMENTS BY COMPONENTa
|
Climate Zone |
4 |
5 |
6 |
|
VERTICAL Fenestration U-factorf |
0.25 |
0.25 |
0.25 |
|
Skylightb U-factor |
0.30 |
0.30 |
0.30 |
|
Glazed Vertical Fenestration SHGCh |
0.40 |
0.32 |
0.36 |
|
Skylight SHGC |
0.40 |
0.32 |
0.36 |
|
Ceiling R-Valueg |
49 ca |
60ca |
60ca |
|
Insulation entirely above roof deck |
30ci |
30ci |
30ci |
|
Wood Frame Wall R-Valued |
34ca or 20ca +9ci or 22ci |
34ca or 20ca+9ci or 22ci |
34ca or 20ca+9ci or 22ci |
|
Mass Wall R-Valuee |
20ci/24ci |
20ci/24ci |
20ci/24ci |
|
Floor R-Valueg |
32ca or 20ca+7.5ci or 22ci |
32 |
32 |
|
BELOW-GRADE Wall R-Value b |
30ca or 22ci or 15ca + 9ci |
30ca or 20ci or 15ca+9ci |
30ca or 20ci or 15ca+9ci |
|
Unheated slab R-value & depthc |
12ci, 4 ft. |
12ci, 4 ft. |
12ci, 4 ft. |
|
Heated slab R-value & depthc |
12ci 4 ft and R-10 full slab |
12ci, 4ft and R-10 full slab |
12ci, 4ft and R-10 full slab |
|
Crawl Space Wall R-value b |
30ca or 20ci or 15ca+9ci |
30ca or 20ci or 15+9ci |
30ca or 20ci or 15+9ci |
a. R-values are minimums. U-factors and SHGC are maximums. Where insulation is installed in a cavity that is less than the label or design thickness of the insulation, the installed R-value of the insulation shall be not less than the R-value specified in the table.
b. “22ci or 30ca” means R-22 continuous insulation (ci) on the interior or exterior surface of the wall or R-30 cavity insulation on the interior side of the wall. 15ca+9ci means R-15 cavity insulation on the interior of the basement wall plus R-9 continuous insulation on the interior or exterior of the home.
c. Slab insulation shall be installed in accordance with Section R402.2.9.1.
d. The first value is cavity insulation, the second value is continuous insulation. Therefore, as an example, “20ca+9ci ” means R-20 cavity insulation plus R-9 continuous insulation.
e. Mass walls shall be in accordance with Section R402.2.5. The second R-value applies where more than half of the insulation is on the interior of the mass wall.
f. Reserved
g. "34ca or 20ca+9ci or 0+22ci" means R-34 cavity insulation alone or R-20 cavity insulation with R-9 continuous insulation or R-22 continuous insulation alone
h. If the Projection Factor is greater than 0.2 but less than 0.5, the maximum SHGC shall be 0.43. If the Projection Factor is greater than 0.5, then the maximum SHGC shall be 0.58
Section R402.1.6 Rooms containing fuel-burning appliances.
Section R402.1.6 - Revise Section R402.1.6 to read as follows:
R402.1.6 Rooms containing fuel-burning appliances. In Climate Zones 3 through 8, where open combustion air ducts provide combustion air to open combustion fuel-burning appliances, the appliances and combustion air opening shall be located outside the building thermal envelope or enclosed in a room that is isolated from inside the building thermal envelope. Such rooms shall be sealed and insulated in accordance with the building thermal envelope requirements of Table R402.1.3, where the walls, floors and ceilings shall meet a minimum of the below-grade wall R-value requirement. The door into the room shall be fully gasketed and any water lines and ducts in the room insulated in accordance with Section R403. The combustion air duct shall be insulated where it passes through conditioned space to an R-value of not less than R-8.
Exceptions:
1. Direct vent appliances with both intake and exhaust pipes installed continuous to the outside.
2. Fireplaces and stoves complying with Section R402.4.2 and the New York City Mechanical Code.
Section R402.2.7 Steel-frame ceilings, walls and floors.
Section R402.2.7 - Revise Section R402.2.7 to read as follows:
R402.2.7 Steel-frame ceilings, walls and floors. Steel-frame ceilings, walls, and floors shall comply with the U-factor requirements of Table R402.1.2. The calculation of the U-factor for steel-framed ceilings and walls in a building thermal envelope assembly shall be determined in accordance with section RF102.3.
Section R402.2.9 Steel-frame ceilings, walls and floors.
Section R402.2.7 - Revise Section R402.2.7 to read as follows:
Section R402.2.7 - Delete Section R402.2.7 in its entirety and add a new Section R402.2.7 to read as follows:
R402.2.9 Below-grade walls. Below-grade walls shall be insulated in accordance with Table R402.1.3.
Exception: Below-grade walls associated with unconditioned basements or cellars where the following requirements are met:
1. The floor overhead, including the underside stairway stringer leading to the basement or cellar, is insulated in accordance with Section R402.1.3 and applicable provisions of Sections R402.2 and R402.2.7.
2. There are no uninsulated ductwork, domestic hot water piping, or hydronic heating surfaces exposed to the basement or cellar.
3. There are no HVAC supply or return diffusers serving the basement or cellar.
4. The walls surrounding the stairway and adjacent to conditioned space are insulated in accordance with Section R402.1.3 and applicable provisions of Section R402.2.
5. The door(s) leading to the basement or cellar from conditioned spaces are insulated in accordance with Section R402.1.3 and applicable provisions of Section R402.2, and weatherstripped in accordance with Section R402.4.
6. The building thermal envelope separating the basement or cellar from adjacent conditioned spaces complies with Section R402.4
Section R402.2.9.1 - Delete Section R402.2.9.1 in its entirety and add a new Section R402.2.9.1 to read as follows:
R402.2.9.1 Below-grade wall insulation installation. Where below-grade walls are insulated, the insulation shall be installed from the top of the below-grade wall down to 10 feet (3048 mm) below grade or to the basement or cellar floor, whichever is less, or in accordance with the proposed design or the rated design, as applicable
Section R402.2.10 - Delete Section R402.2.10 in its entirety and add a new Section R402.2.10 to read as follows:
R402.2.10 Slab-on-grade floors. Unheated slab-on-grade floors with a floor surface within 24 inches (610 mm) above or below grade and heated slabs at any depth above or below grades shall be insulated in accordance with section R402.2.10.1 or R402.2.10.2.
Exception: Slab-edge insulation is not required in jurisdictions designated by the building official as having a very heavy termite infestation probability.
Section R402.2.10.1 - Delete Section R402.2.10.1 in its entirety and add a new Section R402.2.10.1 to read as follows:
R402.2.10.1 Slab-on-grade floor insulation installation. For buildings complying with Section R401.2.1, the slab edge continuous insulation shall extend downward from the top of the slab on the outside or inside of the foundation wall. Insulation located below grade shall be extended the vertical distance provided in Table R402.1.3, but need not exceed the footing depth in accordance with chapter 18 of the New York City Building Code. Where a proposed design includes insulation extending away from the building, it shall be protected by pavement or by not less than 10 inches (254 mm) of soil. The top edge of the insulation installed between the exterior wall and the edge of the interior slab shall be permitted to be cut at a 45-degree (0.79 rad) angle away from the exterior wall. Full-slab insulation shall be continuous under the entire area of the slab-on-grade floor, except at structural column locations and service penetrations. Slab edge insulation required at the heated slab perimeter shall not be required to extend below the bottom of the heated slab and shall be continuous with the full slab insulation.
R402.5.1 Building thermal envelope.
Section R402.5.1 - Delete Section R402.5.1 in its entirety and add a new Section R402.5.11 to read as follows:
R402.5.1 Building thermal envelope. The building thermal envelope shall comply with Sections R402.5.1.1 through R402.5.1.4 The sealing methods between dissimilar materials shall allow for differential expansion and contraction.
R402.5.1.1 Installation.
Section R402.5.1.1 - Delete Section R402.5.1.1 in its entirety and add a new Section R402.5.1.1 to read as follows:
R402.5.1.1 Installation. The components of the building thermal envelope as indicated in Table R402.4.1.1 shall be installed in accordance with the manufacturer’s instructions and the criteria indicated in Table R402.5.1.1, as applicable to the method of construction. Where required by the building official, an approved agency shall inspect all components and verify compliance. The inspection shall include an open wall visual inspection of all components included in Table R402.5.1.1. and shall be installed so that the insulation material uniformly fills each cavity side-to-side and top-to-bottom, without gaps or voids around obstructions, and is split, installed, or fitted tightly around wiring and other penetrations in the cavity. No more than 2 percent of the total insulated area shall contain gaps or voids in the insulation or be compressed below the thickness required to attain the labeled R-value.
Table R402.5.1.1 Insulation and Fenestration Requirements by Componenta
Revise Table R402.5.1.1 to read as follows
TABLE R402.5.1.1
AIR BARRIER, AIR SEALING AND INSULATION INSTALLATIONa
|
COMPONENT |
AIR BARRIER, AIR SEALING CRITERIA |
INSULATION INSTALLATION CRITERIA |
|
General requirements |
A continuous air barrier shall be installed in the building thermal envelope. Breaks or joints in the air barrier shall be sealed. |
Air-permeable insulation shall not be used as a sealing material. Insulation shall be installed so that the insulation material uniformly fills each cavity side-to-side and top-to-bottom, without substantial gaps or voids around obstructions, and is split, installed, or fitted tightly around wiring and other penetrations in the cavity. Not more than 2 percent of the total insulated area shall be compressed below the thickness required to attain the labeled R-value or contain gaps or voids in the insulation. |
|
Ceiling/attic |
An air barrier shall be installed in any dropped ceiling or soffit to separate it from unconditioned space. Access openings, drop down stairs or knee wall doors to unconditioned attic spaces shall be sealed with gasketing materials that allow for repeated entrance over time. |
The insulation in any dropped ceiling/soffit shall be aligned with the air barrier. Access hatches and doors shall be installed and insulated in accordance with Section R402.2.5. Eave baffles shall be installed in accordance with Section R402.2.4. |
|
Walls |
The junction of the foundation and sill plate shall be sealed. The junction of the top plate and the top of exterior walls shall be sealed. Knee walls shall be sealed. |
Cavities within corners and headers of frame walls shall be insulated by completely filling the cavity with a material having a thermal resistance, R-value, of not less than R-3 per inch. Exterior building thermal envelope insulation for framed walls shall be installed in substantial contact and continuous alignment with the air barrier. |
|
Knee wall |
Knee walls shall have an air barrier between conditioned and unconditioned space |
Insulation installed in a knee wall assembly shall be installed in accordance with Section R402.2.3. Air-permeable insulation shall be enclosed inside an air barrier assembly. |
|
Windows, skylights and doors |
The rough opening gap between framing and the frames of skylights, windows and doors, shall be sealed in accordance with fenestration manufacturer’s instructions. |
Insulation shall not be required in the rough opening gap except as required by the fenestration manufacturer's instructions. |
|
Rim joists |
Rim joists shall include an air barrier.b. The junctions of the rim board to the sill plate and the rim board and the subfloor shall be air sealed. |
Rim joists shall be insulated so that the insulation maintains permanent contact with the exterior rim board.ᵇ |
|
Floors, including cantilevered floors and floors above garages |
Floor framing members that are part of the building thermal envelope shall be air sealed to maintain a continuous air barrier. Air permeable floor cavity insulation shall be enclosed. |
Floor insulation shall be installed in accordance with the requirements of Section R402.2.8. |
|
Basement or cellar, crawl space and slab foundations |
Exposed earth in unvented crawl spaces shall be covered with a Class I vapor retarder/air barrier in accordance with Section R402.2.11. Penetrations through concrete foundation walls and slabs shall be air sealed. Class 1 vapor retarders shall not be used as an air barrier on below-grade walls and shall be installed in accordance with the New York City Building Code |
Crawl space insulation, where provided instead of floor insulation, shall be installed in accordance with Section R402.2.11. Conditioned basement or cellar foundation wall insulation shall be installed in accordance with Section R402.2.9.1. Slab-on-grade floor insulation shall be installed in accordance with Section R402.2.10. |
|
Shafts, penetrations |
Duct and flue shafts to exterior or unconditioned space shall be sealed. Utility penetrations of the air barrier shall be caulked, gasketed or otherwise sealed and shall allow for expansion, contraction of materials and mechanical vibration. |
Insulation shall be fitted tightly around utilities passing through shafts and penetrations in the building thermal envelope to maintain required R-value |
|
Narrow cavities |
Narrow cavities of 1 inch or less that are not able to be insulated shall be air sealed. |
Batts to be installed in narrow cavities shall be cut to fit or narrow cavities shall be filled with insulation that on installation readily conforms to the available cavity space. |
|
Garage separation |
Air sealing shall be provided between the garage and conditioned spaces. |
Insulated portions of the garage separation assembly shall be installed in accordance with Sections R303 and R402.2.8. |
|
Recessed lighting |
Recessed light fixtures installed in the building thermal envelope shall be air sealed in accordance with Section R402.4.5. |
Recessed light fixtures installed in the building thermal envelope shall be airtight and IC rated and shall be buried in or surrounded with insulation. |
|
Plumbing, wiring or other obstructions |
All holes created by wiring, plumbing or other obstructions in the air barrier assembly shall be air sealed. |
Insulation shall be installed to fill the available space and surround wiring, plumbing, or other obstructions, unless the required R-value can be met by installing insulation and air barrier systems completely to the exterior side of the obstructions. |
|
Showers, tubs and fireplaces adjacent to the building thermal envelope |
An air barrier shall separate insulation in the building thermal envelope from the shower, tub or fireplace assemblies. |
Exterior framed walls adjacent to showers, tubs and fireplaces shall be insulated. |
|
Electrical, communication and other equipment boxes, housings and enclosures |
Boxes, housing and enclosures that penetrate the air barrier shall be caulked, taped, gasketed or otherwise sealed to the air barrier element being penetrated. All concealed openings into the box, housing or enclosure shall be sealed. Alternatively, air-sealed boxes shall be installed in accordance with Section R402.5.5. |
Boxes, housing and enclosures shall be buried in or surrounded by insulation. |
|
HVAC register boots |
HVAC supply and return register boots shall be sealed to the subfloor, wall covering or ceiling penetrated by the boot. |
HVAC supply and return register boots located within a building thermal envelope assembly shall be buried in or surrounded by insulation. |
|
Concealed sprinklers |
Where required to be sealed, concealed fire sprinklers shall only be sealed in a manner that is recommended by the manufacturer. Caulking or other adhesive sealants shall not be used to fill voids between fire sprinkler cover plates and walls or ceilings. |
|
|
Common walls or double walls separating attached single-family dwellings or townhouses |
An interior air barrier shall be provided. Air sealing at the intersections with building thermal envelope shall be provided. Where installed in a fire resistance- rated wall assembly, air sealing materials shall comply with one of the following: 1. Be in accordance with an approved design for the fire-resistance-rated assembly. 2. Be supported by approved data that shows the assembly as installed complies with the required fire resistance rating. |
Insulation materials recognized in the approved common wall or double-wall design and installed in accordance with the approved design shall be permitted to be used. |
a. Inspection of log walls shall be in accordance with the provisions of ICC 400.
b. Insulation full enclosure is not required in unconditioned/ventilated attic spaces and at rim joists.
Section R402.5.1.2 Air leakage testing.
Section R402.5.1.2 - Delete Section R402.5.1.2 in its entirety and add a new Section R402.5.1.2 to read as follows:
R402.5.1.2 Air leakage testing. The building shall be tested for air leakage in accordance with Sections R402.5.1.3 and R402.5.1.4. Where required by the building official, testing shall be conducted by an approved third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the building official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope have been sealed.
Exception: For heated sunrooms and heated attached private garages and heated, detached private garages accessory to one-and-two family dwellings and townhouses not more than three stories above grade plane in height, building thermal envelope tightness and insulation installation shall be considered acceptable where the items in Table R402.5.1.1, applicable to the method of construction, are field verified. Where required by the building official, an approved third party independent from the installer shall inspect both air barrier and insulation installation criteria. Heated, attached private garage space and heated, detached private garage space shall be thermally isolated from all other habitable, conditioned spaces in accordance with Sections R402.2.13 and R402.4.5, as applicable.
Section R402.5.1.3 Maximum air leakage rate.
Section R402.5.1.3-Delete Section R402.5.1.3 in its entirety and add a new Section R402.5.1.3 to read as follows:
R402.5.1.3 Maximum air leakage rate. The maximum air leakage rate for any building or dwelling unit under any compliance path shall not exceed 3.0 air changes per hour. Testing shall be conducted in accordance with ANSI/RESNET/ICC 380, ASTM E779 or ASTM E1827 and reported at a pressure differential of 0.2 inch water gauge (50 Pa).
Section R402.5.1.4 Testing procedure.
Section R402.1.4 - Add new Section R402.5.1.4, to read as follows:
R402.5.1.4 Testing procedure. Testing shall be conducted by an approved agency . A written report of the results of the test shall be signed by the party conducting the test and provided to the building official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope have been sealed. The written report shall include:
1. The name and place of business of the party conducting the test;
2. The address of the building that was tested;
3. The conditioned floor area of the dwelling, calculated in accordance with ANSI/BOMA Z65.1, except that conditioned floor area shall include areas where the ceiling height is less than 5 feet (1524 mm);
4. Measurement of the air volume lost at an internal pressurization of 0.2 inches water gauge (50 Pa);
5. The air leakage rate in air changes per hour or cubic feet per minute per square foot of dwelling unit enclosure area;
6. The date(s) of the test;
7. A certification by the party conducting the test of the accuracy of the test results; and
8. The signature of the party conducting the test.
During testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures.
2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.
3. Interior doors, where installed at the time of the test, shall be open.
4. Exterior or interior terminations for continuous ventilation systems and heat recovery ventilators shall be closed and sealed.
5. Heating and cooling systems, where installed at the time of the test, shall be turned off.
6. Supply and return registers, where installed at the time of the test, shall be fully open.
Section R402.6 Maximum fenestration U-factor and SHGC.
Section R402.6-Delete Section R402.6 in its entirety and add a new Section R402.6 to read as follows:
R402.6 Maximum fenestration U-factor and SHGC. The area-weighted average maximum fenestration U-factor permitted using tradeoffs from Section R402.1.5 or R405 shall be 0.35 in Climate Zone 4/NYC for vertical fenestration, and 0.55 in Climate Zone 4/NYC for skylights.
Exception: The maximum U-factor and solar heat gain coefficient (SHGC) for fenestration shall not be required in storm shelters complying with ICC 500.
Section R402.7 Thermal bridge mitigation.
Section R402.7 - Add new Sections R402.7, R402.7.1, R402.7.2 and R402.7.3, R402.7.4, R402.7.5, R402.7.6, to read as follows:
R402.7 Thermal bridge mitigation. Above-grade walls shall comply with Sections R402.7.1 through R402.7.6, or an approved design.
Exceptions:
1. Blocking, coping, flashing, and other similar materials for attachment of roof coverings.
2. Thermal bridges mitigated and accounted for in accordance with C402.7.2.
R402.7.1 Above-grade wall design. When complying with the requirements of Table R402.1.3, one of the following options shall be used for above-grade walls:
1. Interior-load bearing double-wall framing.
2. Continuous insulation.
3. Structural insulated panels.
4. Insulated concrete forms.
R402.7.2 Balconies and floor decks. Balconies and concrete floor decks shall not penetrate the building thermal envelope. Such assemblies shall be separately supported.
Exceptions: Balconies and concrete floor decks shall be permitted to penetrate the building thermal envelope where:
1. an area-weighted U-factor is used for above-grade wall compliance that includes a U-factor of 0.8 Btu/h-°F-ft2 for the area of the above-grade wall penetrated by the concrete floor deck in accordance with C402.1.2.1.5, or
2. an approved thermal break device with not less than R-5 insulation material is installed in accordance with the manufacturer's instructions.
3. An approved design where the above-grade wall U-factor used for compliance accounts for all balcony and concrete floor deck thermal bridges.
R402.7.3 Cladding supports. Linear elements supporting opaque cladding shall be offset from the structure attachments that allow the continuous insulation, where present, to pass behind the cladding support element except at the point of attachment. Each point of attachment shall be thermally isolated from the structural element with material having a thermal conductivity of no more than 0.080 btu/h /s.f/F
Exceptions:
1. An approved design where the above-grade wall U-factor used for compliance accounts for the cladding support element thermal bridge.
2. Anchoring for curtain wall and window wall systems where curtain wall and window wall systems comply with C402.7.4.
R402.7.4 Structural beams and columns. Structural steel and concrete beams and columns that project through the building thermal envelope shall be covered with not less than R-5 insulation for not less than 2 feet (610 mm) beyond the interior or exterior surface of an insulation component within the building thermal envelope.
Exception: Where an approved thermal break device is installed in accordance with the manufacturer's instructions.
R402.7.5 Vertical fenestration. Vertical fenestration intersections with above-grade walls shall comply with one or more of the following:
1. Where above-grade walls include continuous insulation, the plane of the exterior glazing layer or, for metal frame fenestration, a non-metal thermal break in the frame shall be positioned within 2 inches (50 mm) of the interior or exterior surface of the continuous insulation.
2. The surface of the rough opening, not coved by the fenestration frame, shall be insulated with not less than R-3 air-impermeable insulation or covered with a wood buck that is not less than 1.5 inches (5038 mm) thick.
3. For the intersection between vertical fenestration and opaque spandrel in a shared framing system, manufacturer's data for the spandrel U-factor shall account for thermal bridges.
Exception: Doors
R402.7.6 Parapets. Parapets shall comply with one or more of the following:
1. Where continuous insulation is installed on the exterior side of the above-grade wall and the roof is insulated with insulation entirely above deck, the continuous insulation shall extend up both sides of the parapet not less than 2 feet (610 mm) above the roof covering or to the top of the parapet, whichever is less. Parapets that are an integral part of a fire-resistance rated wall, and the exterior continuous insulation applied to the parapet, shall comply with the fire resistance ratings of the building code.
2. Where continuous insulation is installed on the exterior side of the above-grade wall and the roof insulation is below the roof deck, the continuous insulation shall extend up the exterior side of the parapet to not less than the height of the top surface of the roof assembly.
3. Where continuous insulation is not installed on the exterior side of the above-grade wall and the roof is insulated with insulation entirely above deck, the wall cavity or integral insulation shall extend into the parapet up to the exterior face of the roof insulation or equivalent R-value insulation shall be installed not less than 2 feet (610 mm) horizontally inward on the underside of the roof deck.
4. Where continuous insulation is not installed on the exterior side of the above-grade wall and the roof insulation is below the roof deck, the wall and roof insulation components shall be adjacent to each other at the roof-ceiling-wall intersection.
5. Where a thermal break device with not less than R-5 insulation material aligned with the above-grade wall and roof insulation is installed in accordance with the manufacturer's instructions.
SECTION R403
SYSTEMS
Section R403.1.3 General.
Section R403.1.3 - Add new Sections R403.1.3, R403.1.3.1, R403.1.3.2 , to read as follows:
R403.1.3 Demand response thermostat. The thermostat controlling the primary heating or cooling system of each dwelling unit shall be provided with a demand responsive control capable of communicating with the Virtual End Node (VEN) using a wired or wireless bi- directional communication pathway that provides the occupant the ability to voluntarily -participate in utility demand response programs, where available. The thermostat shall be capable of executing the following actions in response to a demand response signal:
1. Automatically increasing the zone operating cooling set point by the following values: 1°F (0.5°C), 2°F (1°C), 3°F (1.5°C), and 4°F (2°C).
2. Automatically decreasing the zone operating heating set point by the following values: 1°F (0.5°C), 2°F (1°C), 3°F (1.5°C), and 4°F (2°C).
Thermostats controlling single stage HVAC systems shall comply with Section R403.1.3.1. Thermostats controlling variable capacity systems shall comply with Section R403.1.3.2. Thermostats controlling multi-stage HVAC systems shall comply with either Section R403.1.3.1 or R403.1.3.2. Where a demand response signal is not available the thermostat shall be capable of performing all other functions.
R403.1.3.1 Single stage HVAC system controls. Thermostats controlling single stage HVAC systems shall be provided with a demand responsive control that complies with one of the following:
1. Certified OpenADR 2.0a VEN, as specified under Clause 11, Conformance
2. Certified OpenADR 2.0b VEN, as specified under Clause 11, Conformance
3. Certified by the manufacturer as being capable of responding to a demand response signal from a certified OpenADR 2.0b VEN by automatically implementing the control functions requested by the VEN for the equipment it controls
4. IEC 62746-10-1
5. The communication protocol required by a controlling entity, such as a utility or service provider, to participate in an automated demand response program
6. The physical configuration and communication protocol of CTA 2045-A or CTA-2045-B
R403.1.3.2 Variable capacity and two stage HVAC system controls. Thermostats controlling variable capacity and two stage HVAC systems shall be provided with demand responsive control that complies with the communication and performance requirements of AHRI 1380.
Section R403.3.3 Ductwork located outside conditioned space.
Section R403.3.3 - Revise Section R403.3.3 to read as follows:
R403.3.3 Ductwork located outside conditioned space. New ductwork shall not be located outside conditioned space. Existing and return ductwork located outside conditioned space shall be insulated to an R-value of not less than R-8 for ducts 3 inches (76 mm) in diameter and larger and not less than R-6 for ducts smaller than 3 inches (76 mm) in diameter. Ductwork buried beneath a building shall be insulated. as required per this section or have an equivalent thermal distribution efficiency. Underground ductwork utilizing the thermal distribution efficiency method shall be listed and labeled to indicate the R-value equivalency.
Section R403.3.6 Sealing.
Section R403.3.6 - Revise Section R403.3.6 to read as follows:
R403.3.6 Sealing. Ductwork, air-handling units and filter boxes shall be sealed. Joints and seams shall comply with either the New York City Mechanical Code, as applicable.
Section R403.4 Mechanical system piping insulation.
Section R403.4 - Revise Section R403.4 to read as follows:
R403.4 Mechanical system piping insulation. Piping serving as part of a heating or cooling system capable of carrying fluids greater than 105°F (41°C) or less than 60°F (15°C) shall be thermally insulated in accordance with Table R403.4. The thickness and conductivity of the insulation must result in an R-value of not less than R-3.
Table R403.4 MINIMUM PIPE INSULATION THICKNESS (in inches).
Table R403.4 - Add Table R403.4.1 and Table R403.2 to read as follows:
TABLE R403.4.1
MINIMUM PIPE INSULATION THICKNESS (in inches)a, c
|
FLUID OPERATING TEMPERATURE RANGE AND USAGE (°F) |
INSULATION CONDUCTIVITY |
INCHES OR R-VALUE |
NOMINAL PIPE OR TUBE SIZE (inches) |
|
|
Conductivity Btu × in./(h × ft2 × °F)b |
Mean Rating Temperature, °F |
|
< 1 |
1 to < 11/2 |
11/2 to < 4 |
4 to < 8 |
> 8 |
|
> 350 |
0.32-0.34 |
250 |
Inches |
4.5 |
5.0 |
5.0 |
5.0 |
5.0 |
|
|
|
|
R-value |
R-32 |
R-36 |
R-34 |
R-26 |
R-21 |
|
251-350 |
0.29-0.32 |
200 |
Inches |
3.0 |
4.0 |
4.5 |
4.5 |
4.5 |
|
|
|
|
R-value |
R-20 |
R-29 |
R-32 |
R-24 |
R-20 |
|
201-250 |
0.27-0.30 |
150 |
Inches |
2.5 |
2.5 |
2.5 |
3.0 |
3.0 |
|
|
|
|
R-value |
R-17 |
R-17 |
R-17 |
R-15 |
R-13 |
|
141-200 |
0.25-0.29 |
125 |
Inches |
1.5 |
1.5 |
2.0 |
2.0 |
2.0 |
|
|
|
|
R-value |
R-9 |
R-9 |
R-11 |
R-10 |
R-9 |
|
105-140 |
0.21-0.28 |
100 |
Inches |
1.0 |
1.0 |
1.5 |
1.5 |
1.5 |
|
|
|
|
R-value |
R-5 |
R-9 |
R-8 |
R-8 |
R-7 |
|
40-60 |
0.21-0.27 |
75 |
Inches |
0.5 |
0.5 |
1.0 |
1.0 |
1.0 |
|
|
|
|
R-value |
R-2 |
R-2 |
R-5 |
R-5 |
R-4 |
|
< 40 |
0.20-0.26 |
50 |
Inches |
0.5 |
1.0 |
1.0 |
1.0 |
1.5 |
|
|
|
|
R-value |
R-6 |
R-9 |
R-9 |
R-8 |
R-7 |
For SI: 1 inch = 25.4 mm, °C = [(°F) - 32]/1.8.
a. For piping smaller than 11/2 inches and located in partitions within conditioned spaces, reduction of these thicknesses by 1 inch shall be permitted (before thickness adjustment required in Note b) but not to a thickness less than 1 inch.
b. For insulation outside the stated conductivity range, the minimum thickness (T) shall be determined as follows:
T = r[(1 + t/r)K/k - 1]
where:
T = Minimum insulation thickness.
r = Actual outside radius of pipe.
t = Insulation thickness listed in the table for applicable fluid temperature and pipe size.
K = Conductivity of alternate material at mean rating temperature indicated for the applicable fluid temperature (Btu × in/h × ft2 × °F).
k = The upper value of the conductivity range listed in the table for the applicable fluid temperature.
c. For direct-buried heating and hot water system piping, reduction of these thicknesses by 11/2 inches (38 mm) shall be permitted (before thickness adjustment required in Note b but not to thicknesses less than 1 inch.
TABLE R403.4.2
MINIMUM PIPE INSULATION R-Valuea
|
FLUID OPERATING TEMPERATURE RANGE AND USAGE (°F) |
NOMINAL PIPE OR TUBE SIZE (inches) |
|
|
<1 |
1 TO <1 1/2 |
1 1/2 TO <4 |
4 TO <8 |
≥8 |
|
|
Minimum Insulation R-Value |
|
>350 |
R32 |
R36 |
R34 |
R26 |
R21 |
|
251-350 |
R20 |
R29 |
R32 |
R24 |
R20 |
|
201-250 |
R17 |
R17 |
R17 |
R15 |
R13 |
|
141-200 |
R9 |
R9 |
R11 |
R10 |
R9 |
|
105-140 |
R5 |
R9 |
R8 |
R8 |
R7 |
|
40-60 |
R2 |
R2 |
R5 |
R5 |
R4 |
|
≤40 |
R6 |
R9 |
R9 |
R8 |
R7 |
For SI: R-1 = RSI-0.176228, °C = [(°F)-32]/1.8.
a. The R-value of cylindrical piping insulation shall be determined as follows:
R=(ro(ln(ro/ri)))/k
where:
R = The interior R-value of the cylindrical piping insulation in Btu x ft2 x °F/h
ro = The outer radius of the piping insulation in inches
ri = The inner radius of the piping insulation in inches
k = the thermal conductivity of the insulation material in Btu x in/h x ft2 x °F
Section R403.5.3 Drain water heat recovery units.
Section R403.5.3 - Revise Section R403.5.3 to read as follows:
R403.5.3 Drain water heat recovery units. Where installed, drain water heat recovery units shall have a minimum efficiency of 40 percent if installed for equal flow or a minimum efficiency of 52 percent if installed for unequal flow. Drain water heat recovery units shall comply with CSA B55.2 and be tested and labeled in accordance with CSA B55.1. Potable water-side pressure loss of drain water heat recovery units shall be less than 3 psi (20.7 kPa) for individual units connected to one or two showers. Potable water-side pressure loss of drain water heat recovery units shall be less than 2 psi (13.8 kPa) for individual units connected to three or more showers.
Section R403.5.5 Supply of service hot water. .
Section R403.5.5 - Add Section R403.5.5, Table R403.5.5, Section R403.5.5.1, Table R403.5.5.1, Section R403.5.5.1.1, R403.5.5.2, R403.5.5.3, R403.5.5.4 and Table R403.5.5.4 to read as follows:
R403.5.5 Supply of service hot water. The service hot water supply shall comply with one of the following packages listed in Table R403.5.5.
Table R403.5.5
Efficient Supply of Service Hot Water Packages
|
Component |
Package 1 |
Package 2 |
Package 3 |
Package 4 |
Package 5 |
|
Pipe length/pipe volume |
Building shall meet Section R403.5.5.1a |
|
Building shall meet Section R403.5.5.1 |
|
|
|
Drain water heat recovery |
|
Building shall meet Section R403.5.5.2 |
|
|
|
|
Recirculation |
|
Building shall meet Section R403.5.5.3 |
|
|
|
|
Plumbing fixtures |
Building shall meet Section R403.5.5.4 |
Building shall meet Section R403.5.5.4 |
|
Building shall meet Section R403.5.5.4 |
|
|
Water heater efficiency |
|
|
Hot water system shall have a minimum UEF of 2.9 |
Hot water system shall have a minimum UEF of 2.9 |
Hot water system shall have a minimum UEF of 3.2 |
|
Solar water heating |
Solar water heating system shall be designed to meet at least 25% of annual hot water load |
|
|
|
|
a. Existing buildings complying with R501 are exempt from the pipe length/pipe volume requirement in package number 1.
R403.5.5.1 Compact hot water distribution system option. The pipe shall store not more than 16 ounces (29.6 mL) of water in between the nearest source of heated water and the termination of the fixture supply pipe when calculated using section R403.5.4.1.1. Where the source of heated water is a circulation loop, the loop shall be primed with a demand recirculation water system. There shall be a dedicated return line for the loop that begins after the branch to the last fixture on the supply portion of the loop and runs back to the water heater.
TABLE R403.5.5.1.1
INTERNAL VOLUME OF VARIOUS WATER DISTRIBUTION TUBING
|
NOMINAL SIZE (inches) |
COPPER TYPE L |
COPPER TYPE K |
|
3/8a |
0.97 |
0.84 |
|
1/2 |
1.55 |
1.45 |
|
3/4 |
3.22 |
2.90 |
|
1 |
5.49 |
5.17 |
|
1 1/4 |
8.36 |
8.09 |
|
1 1/2 |
11.83 |
11.45 |
|
2 |
20.58 |
20.04 |
For SI: 1 foot = 304.8 mm, 1 inch = 25.4 mm, 1 liquid ounce = 0.030L, 1 oz/ft2 = 305.15 g/m2. N/A = Not available.
R403.5.5.1.1 Water volume determination. The water volume in the piping between a source of heated water and the termination of a fixture supply shall be calculated in accordance with this section. Water heaters, circulating water systems and heat trace temperature maintenance systems shall be considered to be sources of heated water. The volume shall be the sum of the internal volumes of pipe, fittings, valves, meters and manifolds between the nearest source of heated water and the termination of the fixture supply pipe. The volume in the piping shall be determined from Table R403.5.5.1.1. The volume contained within fixture shutoff valves, within flexible water supply connectors to a fixture fitting and within a fixture fitting shall not be included in the water volume determination. Where heated water is supplied by a recirculating system or heat-traced piping, the volume shall include the portion of the fitting on the branch pipe that supplies water to the fixture.
R403.5.5.2 Drain water heat recovery units. Projects shall include a drain water heat recovery unit in accordance with Section R403.5.3 that captures heat from at least one shower.
R403.5.5.3 Recirculation systems. Projects shall include a recirculation system in accordance with Section R403.5.1.1 with no more than 0.5-gallon (64 oz) storage in the individual branches served by the loop. The storage limit shall be measured from the point where the branch feeding the fixture branches off the recirculation loop to the fixture.
R403.5.5.4 Plumbing fixtures. Plumbing fixtures in residential spaces that are connected to the service water heating system shall have a flow or consumption rating less than or equal to the values shown in Table R403.5.5.4.
Table R403.5.5.4
Maximum Flow Rating for Residential Plumbing Fixtures with Heated Water
|
Plumbing Fixture |
Maximum Flow Ratee |
|
Faucet for private lavatory,a hand sinks, or bar sinks |
1.2 gpm at 60 psi (0.076 L/s at 414 kPa) |
|
Faucet for residential kitchen sink a, b, c |
1.8 gpm at 60 psi (0.11 L/s at 414 kPa) |
|
Shower head (including hand-held shower spray) a, b, d |
1.8 gpm at 80 psi (0.11 L/s at 552 kPa) |
a. Showerheads, lavatory faucets and kitchen faucets are subject to U.S. Federal requirements listed in 10 CFR 430.32(o)-(p).
b. Maximum flow allowed is less than required by flow rates listed in U.S. 10 CFR 430.32(o)-(p) for showerheads and kitchen faucets.
c. Residential kitchen faucet may temporarily increase the flow above the maximum rate, but not above 2.2 gallons per minute at 60 psi (0.14 L/s at 414 kPa) and must default to the maximum flow rate listed.
d. When a shower is served by multiple shower heads, the combined flow rate of all shower heads controlled by a single valve shall not exceed the maximum flow rate listed or the shower shall be designed to allow only one shower head to operate at a time.
e. Construction documents shall include documentation showing the maximum flow rate of the fixtures covered in this table. At the time of inspection, all fixtures covered in this table shall be installed.
Section R403.6 Mechanical ventilation.
Section R403.6 - Revise Section R403.6 to read as follows:
R403.6 Mechanical ventilation. The buildings and dwelling units complying with Section R402.5.1.1 shall be provided with mechanical ventilation that complies with the requirements of the New York City Mechanical Code, as applicable, or with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating.
Section R403.6.1 Heat or energy recovery ventilation.
Section R403.6.1 - Revise Section R403.6.1 to read as follows:
R403.6.1 Heat or energy recovery ventilation. Dwelling units shall be provided with a heat recovery or energy recovery ventilation system installed per manufacturer’s instructions. The system shall be a balanced ventilation system complying with the New York City Mechanical Code. The heat recovery or energy recovery ventilation systems shall have a sensible recovery efficiency (SRE) of no less than 65 percent at 32°F (0°C) at an airflow greater than or equal to the design airflow. The SRE shall be determined from a listed value or from interpolation of listed values. Construction documents shall include documentation of the SRE.
Section R403.6.3 Testing.
Section R403.6.3 - Revise Section R403.6.3 to read as follows:
R403.6.3 Testing. Mechanical ventilation systems shall be tested and verified to provide the minimum ventilation flow rates required by Section R403.6 in accordance with ANSI/RESNET/ICC 380. Testing shall be conducted by an approved agency. A written report of the results of the test shall be signed by the party conducting the test and provided to the code official.
Exception:
1. Kitchen range hoods that are ducted to the outside with ducting having a diameter of 6-inches (152 mm) or larger, a length of 10 feet (3028 mm) or less duct and not more than two 90-degree (1.57 rad) elbows or equivalent shall not require testing.
2. A test by an approved agency shall not be required where the ventilation system has an integrated diagnostic tool used for airflow measurement, and a user interface that communicates the installed airflow rate.
3. Where tested in accordance with Section R403.6.4, testing of each mechanical ventilation system is not required.
Section R403.7.1 Electric-resistance space heating.
Section R403.7.1 - Revise Section R403.7.1 to read as follows:
R403.7.1 Electric-resistance space heating. Dwelling units, sleeping units and other occupiable spaces within the building using electric-resistance space heating shall limit the total installed heating capacity of all electric-resistance space heating serving the dwelling unit to not more than 2.0 kW.
Section R403.8 Systems serving multiple dwelling units.
Section R403.8 - Revise Section R403.8 to read as follows:
R403.8 Systems serving multiple dwelling units. Except for systems complying with Section R403.9, systems serving multiple dwelling units shall comply with Sections C403 C404 and C408 of the New York City Energy Conservation Code instead of Section R403
Exception: Systems complying with Section R403.9
SECTION R404
SYSTEMS
Section R404.1 Lighting equipment.
Section R404.1 - Revise Section R404.1 to read as follows:
R404.1 Lighting equipment. All permanently installed luminaires shall be capable of operation with an efficacy of not less than 45 lumens per watt or shall contain lamps capable of operation with an efficacy of not less than 65 lumens per watt.
Exceptions:
1. Appliance lamps
2. Antimicrobial lighting used for the sole purpose of disinfecting.
3. General service lamps complying with DOE 10 CFR, Part 430.32.
4. Luminaires with a rated electric input of not greater than 3.0 watts.
5. In occupancy R-3, where lighting fixtures used for general lighting cannot accommodate high efficacy lamps, up to 5 percent of the permanently installed fixtures may be decoratively lighting fixtures. The total wattage of permanently installed decorative lighting in the building may not exceed 250 watts.
Section R404.1.2 Exterior lighting power requirements.
Section R404.1.2 - Revise Section R404.1.2 to read as follows:
R404.1.2 Exterior lighting power requirements. The total exterior connected lighting power shall be not greater than the exterior lighting power allowance calculated in accordance with Section R404.1.3. The total exterior connected lighting power shall be the total maximum rated wattage of all lighting that is powered through the energy service for the building .
Exceptions: Lighting used for the following applications shall not be included.
1. Lighting approved for safety reasons.
2. Emergency lighting that is automatically off during normal operations.
3. Exit signs.
4. Specialized signal, directional and marker lighting associated with transportation.
5. Lighting for athletic playing areas.
6. Temporary lighting.
7. Lighting used to highlight features of art, public monuments and the national flag.
8. Lighting for water features and swimming pools.
9. Lighting controlled from within sleeping units and dwelling units.
10. Lighting of the exterior means of egress as required by the New York City Building Code.
Section R404.2.1 Habitable spaces.
Section R404.2.1 - Revise Section R404.2.1 to read as follows:
R404.2.1 Habitable spaces. All permanently installed luminaires in habitable spaces shall be controlled with a manual dimmer or with an automatic shutoff control that automatically turns off lights within 15 minutes after all occupants have left the space and shall incorporate a manual control to allow occupants to turn the lights on or off.
Section R404.5 Dwelling unit electrical meter.
Section R404.1 - Revise Section R403.3.3 to read as follows:
R404.5 Dwelling unit electrical meter. In all buildings having individual dwelling units, provisions shall be made to determine the electrical energy consumed by each unit by separately metering individual dwelling units.
Section R404.6 Photovoltaic systems.
Section R404.6 - Add Section R404.6 to read as follows:
R404.6 Photovoltaic systems. A photovoltaic system shall be installed on, or at the site of, the building with a peak rated capacity, measured under standard test conditions, in accordance with one of the following:
1. For one- and two- family dwellings, townhouses and other Group R-3 occupancies, the peak rated capacity shall be not less than 2 kW.
2. For Group R-2 residential buildings, the peak rated capacity shall be not less than 0.75 watts per square foot (8.07 W/m2) multiplied by the gross conditioned floor area.
3. Where a building includes both commercial occupancies and R-2 or R-4 occupancies required to comply with this code, the peak capacity shall be not less than 0.75 watts per square foot (8.07 W/m2) multiplied by the gross conditioned floor area of the Group R-2 and R-4 occupancies.
Exceptions:
1. A building with a permanently installed domestic solar water heating system sized with a solar savings fraction of not less than 0.5 based on the total service water heating load of all residential occupancies.
2. Buildings where the potential solar zone area is less than 300 square feet (28 m2).
Compliance with the requirements of Local Law 92 and Local Law 94 of 2019 as amended shall not be deemed to satisfy the requirements of this section; however, photovoltaic systems installed to comply with such Local Law 92 or Local Law 94 may be credited towards meeting the requirements of this section.
Section R404.7 Electrical energy storage system.
Section R404.7 - Add Sections R404.7, R404.7.1, R404.7.2, R404.7.2.1, R404.7.2.2, R404.7.2.3, R404.7.2.4, R404.7.3 to read as follows:
R404.7 Electrical energy storage system. One, two and three family dwellings, townhouse units and Group R-3 occupancies shall comply with either Section R404.7.1 or R404.7.2. Buildings with other residential occupancies shall comply with Section R404.7.3
R404.7.1 Electrical energy storage energy capacity. Each building shall have an ESS with a rated energy capacity of not less than 5 kWh with no fewer than four ESS-supplied branch circuits.
R404.7.2 Electrical energy storage system readiness. Each building shall be energy storage ready area in accordance with Sections R404.7.2.1 through R404.7.2.4.
R404.7.2.1 Energy storage system space. Interior or exterior space with dimensions and locations in accordance with the requirements of the New York City Building Code, New York City Fire Code and the New York City Electrical Code shall be reserved to allow for the future installation of an ESS
R404.7.2.2 System isolation equipment space. Space shall be reserved to allow for the future installation of a transfer switch within 3 feet (305 mm) of the main panelboard. Raceways shall be installed between the panelboard and the transfer switch location to allow the connection of an ESS.
R404.7.2.3 Panelboard with backed-up load circuits. A dedicated raceway shall be provided from the main service to a panelboard that supplies the branch circuits served by the ESS. All branch circuits are permitted to be supplied by the main service panel prior to the installation of an ESS. The trade size of the raceway shall be not less than 1 inch (25 mm). The panelboard that supplies the branch circuits shall be labeled, “Subpanel reserved for future battery energy storage system to supply essential loads.”
R404.7.2.4 Branch circuits served by energy storage system. Not fewer than four branch circuits shall be identified and have their source of supply collocated at a single panelboard supplied by the ESS. The following end uses shall be served by the branch circuits:
1. A refrigerator.
2. One lighting circuit near the primary egress.
3. A sleeping room receptacle outlet.
R404.7.3 Electrical energy storage system. Buildings with other residential occupancies shall comply with C405.17 of the Energy Conservation Construction Code of New York State - Commercial Provisions.
Section R404.8 Electric vehicle power transfer infrastructure.
Section R404.8 - Add Sections R404.8, R404.8.1, R404.8.2, R404.8.3, R404.8.4 to read as follows:
R404.8 Electric vehicle power transfer infrastructure.
Electric vehicle power transfer infrastructure. New residential automobile parking spaces for residential buildings shall be provided with electric vehicle power transfer infrastructure in accordance with Sections R404.8.1 through R404.8.5. For buildings with individually metered residential units and parking spaces specifically designated for the use of individual units, electric vehicle ready parking spaces and electric vehicle charging stations installed in such parking spaces shall be wired to the individual unit's electrical meter, unless deemed infeasible by the department.
R404.8.1 Quantity. The amount of Electric Vehicle Service Equipment must comply with any state and local law, rule or regulation relating to such matter.
R404.8.2 EV Ready Spaces. Each branch circuit serving EV ready spaces used to meet the requirements of Section R404.8.1. shall comply with all of the following:
1. Terminate at an outlet or enclosure located within 6 ft (1828 mm) of the center line of each EV ready space it serves and marked “For electric vehicle supply equipment (EVSE).”.
2. Be served by an electrical distribution system and circuit capacity in accordance with Section R404.8.4.
3. Be designated panelboard or other electrical distribution equipment directory shall designate the branch circuit as “For electric vehicle supply equipment (EVSE)”.
4. EV ready spaces shall have a minimum of 4.8 kVA (240 volt, 20-ampere) capacity wiring.
R404.8.3 EVSE spaces. Each EVSE serving either a single EVSE space or multiple EVSE spaces shall comply with the following:
1. Be served by an electrical distribution system in accordance with Section R404.8.4.
2. Have a nameplate charging capacity of not less than 3.8 kVA per EVSE space served. Where an EVSE serves three or more EVSE spaces and is controlled by an energy management system in accordance with Section R404.8.4, the nameplate charging capacity shall be not less than 2.1 kVA per EVSE space served.
3. Be located within 6 feet (1828 mm) of each EVSE space it serves.
4. Be installed in accordance with NFPA 70 and be listed and labeled in accordance with UL 2202 or UL 2594.
R404.8.4 Electrical distribution system capacity. The branch circuits and electrical distribution system serving each EV ready space and EVSE space used to comply with Section R404.8.1 shall comply with one of the following:
1. Sized for a calculated EV charging load of not less than 3.8 kVA per EVSE, EV ready space. Where a circuit is shared or managed, it shall be in accordance with NFPA 70.
2. The capacity of the electrical distribution system and each branch circuit serving multiple EVSE spaces, EV ready spaces designed to be controlled by an energy management system in accordance with NFPA 70 shall be sized for a calculated EV charging load of not less than 2.1 kVA per space. Where an energy management system is used to control EV charging loads for the purposes of this section, it shall not be configured to turn off electrical power to EVSE or EV ready spaces used to comply with Section R404.8.1.
SECTION R405
SIMULATED BUILDING PERFORMANCE
Section R405.2 Simulated building performance compliance.
Section R405.2 - Revise Section R405.2 to read as follows:
R405.2 Simulated building performance compliance. Compliance based on simulated building performance analysis requires that a building comply with the following:
1. The requirements of the sections indicated within Table R405.2.
2. The proposed total building thermal envelope thermal conductance (TCp) shall be less than or equal to the required total building thermal envelope TCr using the prescriptive U-factors and F-factors from Table R402.1.2 multiplied by 1.15 in accordance with Equation 4-2 and Section R402.1.5.
Equation 4-2 TCProposed design ≤ 1.15 × TCPrescriptive reference design
3. The annual site energy use expressed in Btu or Btu per square foot of conditioned floor area of the dwelling unit shall be less than or equal to 80 percent of the annual site energy use expressed in Btu or Btu per square foot of conditioned floor area of the standard reference design. For each dwelling unit with greater than 5,000 square feet (465 m2) of living space located above grade plane, the annual site energy use expressed in Btu or Btu per square foot of conditioned floor area of the dwelling unit shall be reduced by an additional 5 percent of annual site energy use expressed in Btu or Btu per square foot of conditioned floor area of the standard reference design.
Table R405.2 Requirements for Simulated Building Performance.
Table R405.2 - Revise Table R405.2 to read as follows:
TABLE R405.2
REQUIREMENTS FOR SIMULATED BUILDING PERFORMANCE
|
SECTIONa |
TITLE |
|
General |
|
R401.3 |
Certificate |
|
Building Thermal Envelope |
|
R402.1.1 |
Vapor retarder |
|
R402.1.6 |
Rooms containing fuel-burning appliances |
|
R402.2.3 |
Attic knee wall |
|
R402.2.4 |
Eave baffle |
|
R402.2.5.1 |
Access hatches and door insulation installation and retention |
|
R402.2.9 |
Below-grade walls |
|
R402.2.10 |
Slab-on-grade floors |
|
R402.2.11 |
Crawl space walls |
|
R402.5.1.1 |
Installation |
|
R402.5.1.2 |
Air leakage testing |
|
R402.5.1.3 |
Maximum air leakage rate |
|
R402.5.2 |
Fireplaces |
|
R402.5.3 |
Fenestration air leakage |
|
R402.5.4 |
Recessed lighting |
|
R402.5.5 |
Air-sealed electrical and communication outlet boxes |
|
R402.5 |
Maximum fenestration U-factor and SHGC |
|
R402.7 |
Thermal bridge mitigation |
|
Mechanical |
|
R403.1 |
Controls |
|
R403.2 |
Hot water boiler temperature reset |
|
R403.3 |
Duct Systems |
|
R403.4 |
Mechanical system piping insulation |
|
R403.5 except Section R403.5.4 |
Service hot water systems |
|
R403.6 |
Mechanical ventilation |
|
R403.6.1 |
Heat or energy recovery |
|
R403.6.3 |
Testing |
|
R403.7, except Section R403.7.1 |
Equipment sizing and efficiency rating |
|
R403.8 |
Systems serving multiple dwelling units |
|
R403.9.2 |
Snow melt and ice system controls |
|
R403.10 |
Energy consumption of pools and spas |
|
R403.11 |
Portable spas |
|
R403.12 |
Residential pools and permanent residential spas |
|
R403.13 |
Gas fireplaces |
|
Electrical Power and Lighting Systems |
|
R404.1 |
Lighting equipment |
|
R404.2 |
Interior lighting controls |
|
R404.3 |
Exterior lighting controls |
|
R404.5 |
Dwelling unit electrical meter |
|
R404.6 |
Photovoltaic systems |
|
R404.7 |
Electrical energy storage |
|
R404.8 |
Electric vehicle power transfer infrastructure |
a. Reference to a code section includes all the relative subsections except as indicated in the table.
Table R405.4.2(1) Specifications For The Standard Reference And Proposed Designs.
Table R405.4.2(1) - Revise Table R405.4.2(1) to read as follows:
TABLE R405.4.2(1)
SPECIFICATIONS FOR THE STANDARD REFERENCE AND PROPOSED DESIGNS
|
BUILDING COMPONENT |
STANDARD REFERENCE DESIGN |
PROPOSED DESIGN |
|
Above-grade walls |
Type: mass where the proposed wall is a mass wall; otherwise wood frame. |
As proposed |
|
|
Gross area: same as proposed. |
As proposed |
|
|
U-factor: as specified in Table R402.1.2. |
As proposed |
|
|
Solar reflectance = 0.25. |
As proposed |
|
|
Emittance = 0.90. |
As proposed |
|
Below-grade and crawl space walls |
Type: same as proposed. |
As proposed |
|
|
Gross area: same as proposed. |
As proposed |
|
|
U-factor: as specified in Table R402.1.2, with the insulation layer on the interior side of the walls. |
As proposed |
|
Above-grade floors |
Type: wood frame. |
As proposed |
|
|
Gross area: same as proposed. |
As proposed |
|
|
U-factor: as specified in Table R402.1.2. |
As proposed |
|
Ceilings |
Type: wood frame. |
As proposed |
|
|
Gross area: same as proposed. |
As proposed |
|
|
U-factor: as specified in Table R402.1.2. |
As proposed |
|
Roofs |
Type: composition shingle on wood sheathing. |
As proposed |
|
|
Gross area: same as proposed. |
As proposed |
|
|
Solar reflectance = 0.25. |
As proposed |
|
|
Emittance = 0.90. |
As proposed |
|
Attics |
Type: vented with an aperture of 1 ft2 per 300 ft2 of ceiling area. |
As proposed |
|
Foundations |
Type: same as proposed. |
As proposed |
|
|
Foundation wall extension above and below grade same as proposed. Foundation wall or slab perimeter length: same as proposed. Soil characteristics: same as proposed. |
As proposed |
|
|
Foundation wall U-factor and slab F-factor: as specified in Table R402.1.2. |
|
|
Opaque doors |
Area: 40 ft2. |
As proposed |
|
|
Orientation: North. |
As proposed |
|
|
U-factor: same as fenestration as specified in Table R402.1.2. |
As proposed |
|
Vertical fenestration other than opaque doors |
Total areah = (a) The proposed glazing area, where the proposed glazing area is less than 15 percent of the conditioned floor area. (b) 15 percent of the conditioned floor area, where the proposed glazing area is 15 percent or more of the conditioned floor area. |
As proposed |
|
|
Orientation: equally distributed to four cardinal compass orientations (N, E, S & W). |
As proposed |
|
|
U-factor: as specified in Table R402.1.2. |
As proposed |
|
|
SHGC: as specified in Table R402.1.2 except for climate zones without an SHGC requirement, the SHGC shall be equal to 0.40. |
As proposed |
|
|
Interior shade fraction: 0.92 - (0.21 × SHGC for the standard reference design). |
Interior shade fraction: 0.92 - (0.21 × SHGC as proposed) |
|
|
External shading: none |
As proposed |
|
Skylights |
None |
As proposed |
|
Thermally isolated sunrooms |
None |
As proposed |
|
Air leakage rate |
For detached one-family dwellings, the air leakage rate at a pressure of 0.2 inch water gauge (50 Pa) shall be as follows: Climate Zones, 4 and 5: 3.0 air changes per hour. Climate Zones 6: 2.5 air changes per hour. For detached one-family dwellings that are 1,500 ft2 or smaller and attached dwelling units or sleeping units, the air leakage rate at a pressure of 0.2 inch water gauge (50 Pa) shall be 0.27 cfm/ft2 of the testing unit enclosure area. |
The measured air exchange rate.a |
|
Mechanical ventilation rate |
The mechanical ventilation rate shall be in addition to the air leakage rate and shall be the same as in the proposed design, but not greater than B × M where: B = 0.01 × CFA + 7.5 × (Nbr+ 1), cfm. M = 1.0 where the measured air leakage rate is ≥ 3.0 air changes per hour at 50 Pascals, and otherwise, M = minimum (1.7, Q/B). Q = the proposed mechanical ventilation rate, cfm. CFA = conditioned floor area, ft2. Nbr = number of bedrooms. |
The measured mechanical ventilation rateb (Q) shall be in addition to the measured air leakage rate. |
|
Mechanical ventilation fan energy |
The mechanical ventilation system type shall be the same as in the proposed design. Heat recovery or energy recovery shall be modeled for mechanical ventilation where required by Section R403.6.1. Heat recovery or energy recovery shall not be modeled for mechanical ventilation where not required by Section R403.6.1. Where mechanical ventilation is not specified in the proposed design: None Where mechanical ventilation is specified in the proposed design, the annual vent fan energy use, in units of kWh/yr, shall equal (8.76 × B × M)/ef where: B and M are determined in accordance with the air exchange mechanical ventilation rate row of this table. ef = the minimum fan efficacy, as specified in Table R403.6.2, corresponding to the system type at a flow rate of B × M. |
As proposed. |
|
Internal gains |
IGain, in units of Btu/day per dwelling unit, shall equal 17,900 + 23.8 ×CFA + 4,104 × Nbr where: CFA = conditioned floor area, ft2. Nbr = number of bedrooms. |
Same as standard reference design. |
|
Internal mass |
Internal mass for furniture and contents: 8 pounds per square foot of floor area. |
Same as standard reference design, plus any additional mass specifically designed as a thermal storage elementc but not integral to the building thermal envelope or structure. |
|
Structural mass |
For masonry floor slabs: 80 percent of floor area covered by R-2 carpet and pad, and 20 percent of floor directly exposed to room air. |
As proposed |
|
|
For masonry basement walls: as proposed, but with insulation as specified in Table R402.1.3, located on the interior side of the walls. |
As proposed |
|
|
For other walls, ceilings, floors, and interior walls: wood frame construction. |
As proposed |
|
Heating systemsd, e, j, k |
Fuel type/capacity: same as proposed design. |
As proposed |
|
|
Product class: same as proposed design. |
As proposed. |
|
|
Efficiencies: |
|
|
|
Heat pump: complying with 10 CFR §430.32. |
As proposed. |
|
|
Fuel gas and liquid fuel furnaces: complying with10 CFR §430.32. |
As proposed. |
|
|
Fuel gas and liquid fuel boilers: complying with10 CFR §430.32. |
As proposed. |
|
Cooling systemsd, f, k |
Fuel type: electric Capacity: same as proposed design. |
As proposed |
|
|
Efficiencies: complying with 10 CFR §430.32. |
As proposed. |
|
Service water heatingd, g, k |
Use, in units of gal/day = 25.5 + (8.5 × Nbr) where: Nbr = number of bedrooms. |
Use, in units of gal/day = 25.5 + (8.5 × Nbr) × (1 - HWDS) where: Nbr = number of bedrooms. HWDS = factor for the compactness of the hot water distribution system. |
|
|
|
Compactness ratioi factor |
HWDS |
|
|
|
1 story |
2 or more stories |
|
|
|
|
> 60% |
> 30% |
0 |
|
|
|
> 30% to ≤ 60% |
> 15% to ≤ 30% |
0.05 |
|
|
|
> 15% to ≤ 30% |
> 7.5% to ≤ 15% |
0.10 |
|
|
|
< 15% |
< 7.5% |
0.15 |
|
|
Fuel type: same as proposed design. |
As proposed. |
|
|
Rated storage volume: same as proposed design. |
As proposed. |
|
|
Draw pattern: same as proposed design. |
As proposed. |
|
|
Efficiencies: Uniform Energy Factor complying with 10 CFR §430.32. |
As proposed. |
|
|
Tank temperature: 120°F (48.9°C). |
Same as standard reference design. |
|
Thermal distribution systems |
Duct insulation: in accordance with Section R403.3.3. |
Duct insulation: as proposedm. |
|
|
Duct location: |
Duct location: as proposed.l |
|
|
Foundation type |
Slab on grade |
Unconditioned crawl space |
Basement or conditioned crawl space |
---- |
|
|
Duct location (supply and return) |
One-story building: 100% in unconditioned attic. All other: 75% In unconditioned attic and 25% inside conditioned space. |
One-story building: 100% in unconditioned crawl space. All other: 75% In unconditioned crawl space and 25% inside conditioned space. |
Unconditioned attic. |
Duct system leakage to outside: The measured total duct system leakage rate shall be entered into the software as the duct system leakage to outside rate. Exceptions: 1. Where duct system leakage to outside is tested in accordance ANSI/RESNET/ICC 380 or ASTM E1554, the measured value shall be permitted to be entered. 2. Where total duct system leakage is measured without space conditioning equipment installed, the simulation value shall be 4 cfm per 100 ft2 of conditioned floor area. |
|
|
Duct system leakage to outside: for duct systems serving > 1,000 ft2 of conditioned floor area, the duct leakage to outside rate shall be 4 cfm per 100 ft2 of conditioned floor area. For duct systems serving ≤ 1,000 ft2 of conditioned floor area, the duct leakage to outside rate shall be 40 cfm. |
|
|
|
Distribution system efficiency (DSE): for hydronic systems and ductless systems, a thermal DSE of 0.88 shall be applied to both the heating and cooling system efficiencies. |
Distribution system efficiency (DSE): for hydronic systems and ductless systems, DSE shall be as specified in Table R405.4.2(2). |
|
Thermostat |
Type: Manual, cooling temperature setpoint = 75°F; Heating temperature setpoint = 72°F. |
Same as standard reference design. |
|
Photovoltaic systems |
Design capacity as specified in R404.6. |
Same as standard reference designs |
|
Dehumidistat |
Where a mechanical ventilation system with latent heat recovery is not specified in the proposed design: None. Where the proposed design utilizes a mechanical ventilation system with latent heat recovery: Dehumidistat type: manual, setpoint = 60% relative humidity. Dehumidifier: whole-dwelling with integrated energy factor = 1.77 liters/kWh. |
Same as standard reference design. |
For SI: 1 square foot = 0.93 m2, 1 British thermal unit = 1055 J, 1 pound per square foot = 4.88 kg/m2, 1 gallon (US) = 3.785 L, °C = (°F-32)/1.8, 1 degree = 0.79 rad.
a. Hourly calculations as specified in the ASHRAE Handbook of Fundamentals, or the equivalent, shall be used to determine the energy loads resulting from infiltration.
b. The combined air exchange rate for infiltration and mechanical ventilation shall be determined in accordance with Equation 43 of 2001 ASHRAE Handbook of Fundamentals, page 26.24 and the “Whole-house Ventilation” provisions of 2001 ASHRAE Handbook of Fundamentals, page 26.19 for intermittent mechanical ventilation.
c. Thermal storage element shall mean a component that is not part of the floors, walls or ceilings that is part of a passive solar system, and that provides thermal storage such as enclosed water columns, rock beds, or phase-change containers. A thermal storage element shall be in the same room as fenestration that faces within 15 degrees (0.26 rad) of true south, or shall be connected to such a room with pipes or ducts that allow the element to be actively charged.
d. For a proposed design with multiple heating, cooling or water heating systems using different fuel types, the applicable standard reference design system capacities and fuel types shall be weighted in accordance with their respective loads as calculated by accepted engineering practice for each equipment and fuel type present.
e. For a proposed design without a proposed heating system, a heating system having the prevailing federal minimum efficiency shall be assumed for both the standard reference design and proposed design.
f. For a proposed design home without a proposed cooling system, an electric air conditioner having the prevailing federal minimum efficiency shall be assumed for both the standard reference design and the proposed design.
g. For a proposed design without a proposed water heater, the following assumptions shall be made for both the proposed design and standard reference design. For a proposed design with a heat pump water heater, the following assumptions shall be made for the standard reference design, except the fuel type shall be electric. Fuel type: same as the predominant heating fuel type
Rated storage volume: 40 gallons
Draw pattern: medium
Efficiency: Uniform Energy Factor complying with 10 CFR § 430.32
h. For residences with conditioned basements, R-2 and R-4 residences, and for townhouses, the following formula shall be used to determine glazing area:
AF = As × FA × F
where:
AF = Total glazing area.
As = Standard reference design total glazing area.
FA = (Above-grade thermal boundary gross wall area)/(above-grade boundary wall area + 0.5 × below-grade boundary wall area).
F = (above-grade thermal boundary wall area)/(above-grade thermal boundary wall area + common wall area) or 0.56, whichever is greater.
and where:
Thermal boundary wall is any wall that separates conditioned space from unconditioned space or ambient conditions.
Above-grade thermal boundary wall is any thermal boundary wall component not in contact with soil.
Below-grade boundary wall is any thermal boundary wall in soil contact.
Common wall area is the area of walls shared with an adjoining dwelling unit.
i. The factor for the compactness of the hot water distribution system is the ratio of the area of the rectangle that bounds the source of hot water and the fixtures that it serves (the “hot water rectangle”) divided by the floor area of the dwelling.
1. Sources of hot water include water heaters, or in multiple-family buildings with central water heating systems, circulation loops or electric heat traced pipes.
2. The hot water rectangle shall include the source of hot water and the points of termination of all hot water fixture supply piping.
3. The hot water rectangle shall be shown on the floor plans and the area shall be computed to the nearest square foot.
4. Where there is more than one water heater and each water heater serves different plumbing fixtures and appliances, it is permissible to establish a separate hot water rectangle for each hot water distribution system and add the area of these rectangles together to determine the compactness ratio.
5. The basement or attic shall be counted as a story when it contains the water heater.
6. Compliance shall be demonstrated by providing a drawing on the plans that shows the hot water distribution system rectangle(s), comparing the area of the rectangle(s) to the area of the dwelling and identifying the appropriate compactness ratio and HWDS factor.
j. For a proposed design with electric resistance heating, a split system heat pump complying with 10 CFR §430.32 (2021) shall be assumed modeled in the standard reference design.
k. For heating systems, cooling systems, or water heating systems not included in this table, the standard reference design shall be the same as proposed design.
l. Only sections of ductwork that are installed in accordance with Section R403.3.4, Items 1 and 2 are assumed to be located completely inside conditioned space. All other sections of ductwork are not assumed to be located completely inside conditioned space.
m. Sections of ductwork installed in accordance with Section R403.3.5.1 are assumed to have an effective duct insulation R-value of R-25.
SECTION R406
ENERGY RATING INDEX COMPLIANCE ALTERNATIVE
Table R406.2 Requirements for Energy Rating Index.
Table R406.2 - Revise Table R406.2 to read as follows:
TABLE R406.2
REQUIREMENTS FOR ENERGY RATING INDEX
|
SECTIONa |
TITLE |
|
General |
|
R401.3 |
Certificate |
|
Building Thermal Envelope |
|
R402.1.1 |
Vapor retarder |
|
R402.1.6 |
Rooms containing fuel-burning appliances |
|
R402.2.4 |
Eave baffle |
|
R402.2.5.1 |
Access hatches and door insulation installation and retention |
|
R402.2.9 |
Below-grade walls |
|
R402.2.10 |
Slab-on-grade floors |
|
R402.2.11 |
Crawl space walls |
|
R402.5.1.1 |
Installation |
|
R402.5.1.2 |
Air leakage testing |
|
R402.5.1.3 |
Maximum air leakage rate |
|
R402.5.2 |
Fireplaces |
|
R402.5.3 |
Fenestration air leakage |
|
R402.5.4 |
Recessed lighting |
|
R402.5.5 |
Air-sealed electrical and communication outlet boxes |
|
R406.3 |
Building thermal envelope |
|
R402.7 |
Thermal bridge mitigation |
|
Mechanical |
|
R403.1 |
Controls |
|
R403.2 |
Hot water boiler temperature reset |
|
R403.3 |
Duct systems |
|
R403.4 |
Mechanical system piping insulation |
|
R403.5, except Section R403.5.4 |
Service hot water systems |
|
R403.6 |
Mechanical ventilation |
|
R403.6.1 |
Heat or energy recovery |
|
R403.6.3 |
Testing |
|
R403.7 except Section R403.7.1 |
Equipment sizing and efficiency rating |
|
R403.8 |
Systems serving multiple dwelling units |
|
R403.9.2 |
Snow melt and ice system controls |
|
R403.10 |
Energy consumption of pools and spas |
|
R403.11 |
Portable spas |
|
R403.12 |
Residential pools and permanent residential spas |
|
R403.13 |
Gas Fireplaces |
|
Electrical Power and Lighting Systems |
|
R404.1 |
Lighting equipment |
|
R404.2 |
Interior lighting controls |
|
R404.5 |
Dwelling unit electrical meter |
|
R404.3 |
Exterior lighting controls |
|
R404.7 |
Electrical energy storage system |
|
R404.8 |
Electric vehicle power transfer infrastructure |
a. Reference to a code section includes all of the relative subsections except as indicated in the table.
Section R406.5 ERI-based compliance.
Section R406.5 - Revise Section R406.5 to read as follows:
R406.5 ERI-based compliance. Compliance based on an ERI analysis requires that the rated proposed design and confirmed as-built dwelling unit be shown to have an ERI less than or equal to the appropriate value indicated in Table R406.5 where compared to the ERI reference design. ERI values modeled for the building shall not use on-site renewables to meet the ERI targets.
Table R406.5 Maximum Energy Rating Index.
Table R406.5 - Delete Table R406.5 in its entirety and add a new Table R406.5 to read as follows:
TABLE R406.5
MAXIMUM ENERGY RATING INDEX
|
CLIMATE ZONE |
ENERGY RATING INDEX |
|
CZ4/NYC |
42 |
SECTION R408
ADDITIONAL EFFICIENCY CREDITS
Section R408 Additional Efficiency Credits.
Section R408 1 - Delete Chapter R6 in its entirety and add a new chapter R6 to read as follows:
R408.1 Scope.
This section provides additional efficiency measures and credits required to comply with Section R401.2.1.
R408.2 Additional energy efficiency credit requirements.
Additional energy efficiency Residential buildings shall earn not less than 12 credits from not less than two measures specified in Table R408.2. Three additional credits shall be earned for buildings units with more than 5,000 square feet (465 m2) of living space located above grade plane. To earn credit as specified in Table R408.2 for the applicable climate zone, each measure selected for compliance shall comply with the applicable subsections of Section R408. Each dwelling unit or sleeping unit shall comply with the selected measure to earn credit. Interpolation of credits between measures shall not be permitted.
TABLE R408.2 CREDITS FOR ADDITIONAL ENERGY EFFICIENCY
|
Measure Number |
Measure Description |
|
|
|
Credit Value |
|
R408.2.1.1(1) |
≥2.5% Reduction in total TC |
1 |
|
R408.2.1.1(2) |
≥5% reduction in total TC |
2 |
|
R408.2.1.1(3) |
>7.5% reduction in total TC |
2 |
|
R408.2.1.1(4) |
>10% reduction in total TC |
3 |
|
R408.2.1.1(5) |
>15% reduction in total TC |
4 |
|
R408.2.1.1(6) |
>20% reduction in total TC |
5 |
|
R408.2.1.1(7) |
>30% reduction in total TC |
8 |
|
R408.2.2(1) |
Reduced air leakage <2.2 ACH50 |
2 |
|
R408.2.2(2) |
Reduced air leakage <1.5 ACH50 |
5 |
|
R408.2.2(3) |
Reduced air leakage <0.6 ACH50 |
7 |
|
R408.2.3 (1) a |
Ground source heat pump |
15 |
|
R408.2.3 (2) a |
Heat pump(Option 1) |
7 |
|
R408.2.3 (3) a |
Heat pump(Option 2) |
9 |
|
R408.2.4b |
Ductless or hydronic thermal distribution |
1 |
|
R408.2.5b |
ERV or HRV with SRE ≥ 0.80 |
1 |
|
R408.2.6 |
Track embodied energy/carbon of CMU Block and Poured in Place Concrete |
1 |
a. Where multiple heating or cooling systems are installed, credits shall be determined using a weighted average of the square footage served by each system.
b. Where the measure is selected, each dwelling unit and sleeping unit must comply with the measure.
R408.2.1 Enhanced building thermal envelope performance.
R408.2.1.1 The proposed total building thermal envelope thermal conductance (TCp) shall be calculated in accordance with Section R402.1.5 and shall be reduced by not less than the percentage indicated in Table R408.2 in comparison to the reference total building thermal envelope thermal conductance (TCr).
R408.2.2 Reduced air leakage.
The building shall have a measured air leakage rate not less the level indicated in Table R408.2 in accordance with the following:
1. Buildings meeting R408.2.2(1) shall have a measured air leakage rate of less than or equal to 2.2 air changes per hour maximum at 50 Pascals when testing in accordance with Section R402.5.1.2. Attached dwelling units may also reduce tested air leakage to 0.15 cfm/ft2 [0.75 L/(s x m2)] of the dwelling unit enclosure area at a pressure differential of 0.2 inch water gauge (50 Pa) as an alternative when testing in accordance with Section C402.5.2.2.
2. Buildings meeting R408.2.2(2) shall have a measured air leakage rate of less than or equal to 1.5 air changes per hour maximum at 50 Pascals when testing in accordance with Section R402.5.1.2. Attached dwelling units may also reduce tested air leakage to 0.10 cfm/ft2 [0.50 L/(s x m2)] of the dwelling unit enclosure area at a pressure differential of 0.2 inch water gauge (50 Pa) as an alternative when testing in accordance with Section C402.5.2.2.
3. Buildings meeting R408.2.2(1) shall have a measured air leakage rate of less than or equal to 0.6 air changes per hour maximum at 50 Pascals when testing in accordance with Section R402.5.1.2. Attached dwelling units may also reduce tested air leakage to 0.04 cfm/ft2 [0.20 L/(s x m2)] of the dwelling unit enclosure area at a pressure differential of 0.2 inch water gauge (50 Pa) as an alternative when testing in accordance with Section C402.5.2.2.
R408.2.3 More efficient HVAC equipment performance options.
Heating and cooling equipment shall meet one of the following: measures as applicable for the climate zone where heating and cooling efficiencies are represented by Annual Fuel Utilization Efficiency (AFUE), Coefficient of Performance (COP), Energy Efficiency Ratio (EER and EER2), Heating Season Performance Factor (HSPF2) and Seasonal Energy Efficiency Ratio (SEER2). Where multiple heating or cooling systems are installed serving different zones, credits shall be earned based on the weighted average of square footage of the zone served by the system.
HVAC options applicable to all climate zones:
1. Ground source heat pump: Greater than or equal to 16.1 EER and 3.1 COP ground source heat pump.
2. Heat Pump (Option 1) - Greater than or equal to 8.4 HSPF2 if ductless or 7.8 HSPF2 if ducted and 14.3 SEER2 air source heat pump capable of meeting a capacity ratio ≥ 70% of heating capacity at 5 °F (-15° C) versus rated heating capacity at 47 °F (8.34° C).
.3. Heat pump (Option 2): Greater than or equal to 10.1 HSPF2 if ductless or 9.4 HSPF2 if ducted and 15.2 SEER2 air source heat pump capable of meeting a capacity ratio ≥ 70 percent of heating capacity at 5°F (-15°C) versus rated heating capacity at 47°F (8.3°C) (8.34° C) and a COP ≥ 1.75 at 5 °F (-15° C)
R408.2.4 More efficient duct thermal distribution system options. The thermal distribution system shall be a ductless thermal distribution system or hydronic thermal distribution system is located completely on the conditioned side of the building thermal envelope.
R408.2.5 Improved ventilation system options.
HRV and ERV Sensible Recovery Efficiency (SRE) shall be not less than 80 percent at 32°F (0°C) at the lowest listed net airflow. ERV Latent Recovery/Moisture Transfer (LRMT) shall be not less than 50 percent at the lowest listed net airflow.
R408.2.6 Embodied Energy/Carbon Tracking. Where the following building materials are used, the applicant shall provide documentation as described below in order to obtain a credit for additional energy efficiency;
1. Concrete Masonry Units . To obtain a credit for Embodied Energy/Carbon Tracking for Concrete Masonry Units, the applicant shall include the following information as part of the Energy Analysis submitted with the construction documentation:
1.1 Environmental Product Declaration (EPD) for the proposed product showing the embodied carbon of the CMU product (Units: Units: kgCO2e/m3)
1.2 The listed embodied carbon of the CMU product per the EPD (Units: kgCO2e/m3);
1.3 The total quantity (Units: m3) of the CMU in the project;
1.4 The total embodied carbon of CMU (listed embodied carbon multiplied by quantity) in the project versus the baseline embodied carbon of CMU (industry wide baseline embodied carbon multiplied by quantity);
1.4.1 Industry Wide Baseline Embodied Carbon for Concrete Masonry Unit: 177 kgC02e/yr
1.5 The application does NOT need to demonstrate a reduction in embodied carbon from the baseline in order to obtain the credit;
2. Poured in Place Concrete: To obtain a credit for Embodied Energy/Carbon Tracking for Poured in Place Concrete, the applicant shall include the following information as part of the Energy Analysis submitted with the construction documentation:
2.1 The type and specified compressive strength (psi) of the poured in place concrete
2.2 Environmental Product Declaration (EPD) for the proposed concrete showing the embodied carbon of the CMU product (Units: Units: kgCO2e/m3)
2.3 The listed embodied carbon of the poured in place concrete per the EPD (Units: kgCO2e/m3);
2.4 The total quantity (Units: y3) of the poured in place concrete in the project;
2.5 The total embodied carbon of poured in place concrete (listed embodied carbon multiplied by quantity) in the project versus the baseline embodied carbon of poured in place concrete (industry wide baseline embodied carbon multiplied by quantity);
2.5.1 Industry Wide Baseline Embodied Carbon for Poured in Place Concrete (Ready Mix)
- 0-2500 psi: 175 kgCO2e/y3
- 2501-3000 psi: 194 kgCO2e/y3
- 3001-4000 psi: 238 kgCO2e/y3
- 4001-5000 psi: 289 kgCO2e/y3
- 5001-6000 psi: 304 kgCO2e/y3
- 6001-8000 psi: 353kgCO2e/y3
2.5.2 Industry Wide Baseline Embodied Carbon for Poured in Place Concrete (Lightweight Concrete)
- 0-3000 psi: 365 kgCO2e/y3
- 3001-4000 psi: 417 kgCO2e/y3
- 4001-5000 psi: 461 kgCO2e/y3
2.6 The application does NOT need to demonstrate a reduction in embodied carbon from the baseline in order to obtain the credit;
CHAPTER R5
EXISTING BUILDINGS
SECTION R501
GENERAL
Section R501.1 Scope.
Section R501.1 - Revise Section R501.1 to read as follows:
R501.1 Scope. The provisions of this chapter shall control the alteration, repair, addition and change of occupancy of existing buildings and structures. This chapter shall not apply to alterations required to comply with new building provisions as determined by 28-101.4.5 of the New York City Administrative Code.
Section R501.2 Compliance.
Section R501.2 - Revise Section R501.2 to read as follows:
R501.2 Compliance. Additions, alterations, repairs or changes of occupancy to, or relocation of, an existing building, building system or portion thereof shall comply with Section R502, R503, R504 or R505, respectively, in this code, and the provisions for alterations, repairs, additions and changes of occupancy or relocation, respectively, in the New York City Building Code, the New York City Fire Code, the New York City Fuel Gas Code, the New York City Mechanical Code, the New York City Plumbing Code, the Housing Maintenance Code and the New York City Electrical Code. as applicable. Changes where unconditioned space is changed to conditioned space shall comply with Section R501.6.
Section R501.6 Change in space conditioning.
Section R501.6 - Revise the exception in Section R501.6 to read as follows:
Exceptions:. Where the simulated performance option in Section R405 is used to comply with this section, the annual site energy of the proposed design is permitted to be 110 percent of the annual energy cost otherwise allowed by Section R405.2.
SECTION R502
ADDITIONS
Section R502.1 General.
Section R501.2 - Revise Section R501.2 to read as follows:
R502.1 General. Additions to an existing building, building system or portion thereof shall conform to the provisions of this code as those provisions relate to new construction Additions shall not create an unsafe or hazardous condition or overload existing building systems. Altered portions of the building filed in conjunction with an addition shall comply with section R503.
Section R502.2.1 Building thermal envelope.
Section R502.2.1 - Revise Section R502.2.1 to read as follows:
R502.2.1 Building thermal envelope. New building thermal envelope assemblies that are part of the addition shall comply with Sections R402.1, R402.2, R402.4.1 through R402.4.5, and R402.5.
Exceptions:
1.Section R402.5.1.2 shall only require testing of the portion of the envelope that is part of the addition in accordance with the guarded test provisions of ANSI/RESNET/ICC 380.
2. For additions less than 10 percent of the existing building conditioned area, the commissioner may waive the requirements of section R402.5.1.2 by having a Registered Design Professional submit an analysis indicating that such test would not significantly impact the energy performance of the addition.
Section R502.2.2 Heating and cooling systems.
Section R502.2.2 - Revise Section R502.2.2 to read as follows:
R502.2.2 Heating and cooling systems.
New heating, cooling, ventilation systems and ductwork that are part of an addition shall comply with Section R403.
Exception: Where ductwork from an existing heating and cooling system is extended to an addition, Sections R403.3.7 and R403.3.8 shall not be required for those portions of the systems that have not been modified.
Section R502.2.5 Electric vehicle infrastructure.
Section R502.2.5 - Add new Section R502.2.5, to read as follows:
R502.2.5 Electric vehicle infrastructure. Where the work area includes a new parking space for one, two and three family dwellings and townhouses, electric vehicle charging infrastructure shall be provided in accordance with Section R404.8.1 through Section R404.8.4. Additions to a private garage, carport, or a public parking garage in R-2 occupancies or allocated parking for other residential occupancies in mixed-use buildings shall comply with Section C502.3.9
Section R502.2.5 Additional energy efficiency credit requirements for additions.
Section R502.2.5 - Delete Section R502.2.5 in its 2 in its entirety.
Section R502.2.6 Additional energy efficiency credit requirements for additions.
Section R502.2.6 - Add new Section R502.2.6 to read as follows:
R502.2.6 Additional energy efficiency credit requirements for additions. Additions shall comply with sufficient measures from Table R408.2 to achieve not less than five credits. Alterations to the existing building that are not part of the addition but are permitted with an addition shall be permitted to be used to achieve this requirement.
Exceptions:
1. Additions that increase the building ’s total conditioned floor area by less than 25 percent.
2. Additions that do not include the addition or replacement of equipment covered in Section R403.5 or R403.7.
3. Additions that do not increase conditioned space .
4. Where the addition alone or the existing building and addition together comply with Section R405 or R406.
SECTION R503
ALTERATIONS
Section R503.1.1.3 Above-grade wall alterations.
Section R503.1.1.3 - Revise Section R503.1.1.3 to read as follows:
R503.1.1.3 Above-grade wall alterations. Above-grade wall alterations shall comply with the following as applicable:
1. Where wall cavities are exposed, the exposed cavities shall be insulated to full depth with new or existing insulation that complies with Section R303.1.4 and having a minimum nominal value of R-3.5 per inch. New cavities created shall be insulated in accordance with Section R402.1. An interior vapor retarder shall be provided where required in accordance with chapter 14 of the New York City Building Code.
2. Where exterior wall coverings, recladding and fenestration are added or replaced for the full extent of any exterior facade of one or more elevations of the building , continuous insulation shall be provided where required in accordance with Section R402.1. Where specified, the continuous insulation requirement also shall comply with the requirements of chapter 14 of the New York City Building Code as applicable, and manufacturers’ instructions.
3. Where new interior finishes or exterior wall coverings are applied to the full extent of any exterior wall assembly of mass construction, insulation shall be provided in accordance with Section R402.1.
Section R503.1.1.4 Floor alterations.
Section R503.1.1.3 - Revise Section R503.1.1.3 to read as follows:
R503.1.1.4 Floor alterations. Where cavities in a floor or floor overhang are exposed and the floor or floor overhang is part of the building thermal envelope, the cavities shall be insulated to full depth with new or existing insulation that complies with Section R303.1.4. and having a minimum nominal value of R-3.5 per inch. New cavities created in the floor or floor overhang shall comply with Section R402.1. Where an unconditioned below-grade space is changed to conditioned space, floors that are part of the building thermal envelope enclosing such space shall comply with Section R502.
Section R503.1.1.6 Air barrier.
Section R503.1.1.6 - Revise Section R503.1.1.6 to read as follows:
R503.1.1.6 Air barrier. Altered building thermal envelope assemblies shall be provided with an air barrier in accordance with Section R402.5. The air barrier shall be made continuous with an existing air barrier where present in adjacent assemblies provided access is unobstructed. Testing requirements of Section R402.5.1.2 shall not be required.
Section R503.1.2 Heating and cooling systems.
Section R503.1.2 - Revise Section R503.1.2 to read as follows:
R503.1.2 Heating and cooling systems.
New heating, cooling, ventilation systems and ductwork that are part of the alteration shall comply with Section R403 and this section. Alterations to existing heating and cooling systems and ductwork shall comply with this section.
Exception: Where ductwork from an existing heating and cooling system is extended, Sections R403.3.7 and R403.3.8 shall not be required for those portions of the systems that have not been modified
Section R503.1.2.1 Ductwork.
Section R503.1.2.1 - Revise Section R503.1.2.1 to read as follows:
R503.1.2.1 Ductwork.
HVAC ductwork newly installed as part of an alteration shall comply with Section R403.
Exception: Sections R403.3.7 and R403.3.8 shall not be required for those portions of the systems that have not been modified.
Section R503.1.3 Service hot water systems.
Section R503.1.3 - Revise Section R503.1.3 to read as follows:
R503.1.3 Service hot water systems. New service hot water systems that are part of the alteration shall comply with Section R403.5.
Exception: Existing buildings complying with this section are exempt if the section requires altering existing systems withing the building.
Section R503.1.5 Electrical service replacement.
Section R503.1.5 - Add new Section R503.1.5, to read as follows:
R503.1.5 Electrical service replacement.
Where the utility electrical service supplied to a building is being upgraded or replaced in one, two and three family dwellings and townhouses, the electrical load calculations provided to the utility shall be calculated in accordance with Section R404.7.1 through Section R404.7.5, R404.8 and Section R404.5. Alterations to R-2 occupancies or allocated parking for R-2 occupancies in mixed-use buildings shall comply with Section C103.7.
Section R503.1.5 Additional energy efficiency credit requirements for additions.
Section R503.1.5 - Delete Section R503.1.5 in its entirety.
Section R503.1.6 Additional energy efficiency credit requirements for additions.
Section R503.1.6 - Add new Section R503.1.6 to read as follows:
R503.1.6 Additional efficiency credit requirements for substantial improvements.
Substantial energy alteration shall comply with sufficient measures from Table R408.2 to achieve not less than three credits.
Exceptions:
1. Alterations that are permitted with an addition complying with Section R502.2.5.
2. Alterations that comply with Section R405 or R406.
3. Substantial energy alteration that do not include the addition or replacement of equipment covered in either Section R403.5 or R403.7.
SECTION R505
CHANGE OF OCCUPANCY OR USE
Section R505.1 General.
Section R505.1 - Revise the exception in Section R505.1 to read as follows:
Exception: Where the simulated building performance option in Section R405 is used to comply with this section, the annual site energy of the proposed design is permitted to be 110 percent of the annual energy cost allowed by Section R405.2.
§ 28-1001.2.2 New York city amendments to the New York State-specific version of ASHRAE 90.1.
2025 NYC ASHRAE 90.1
Section 3.1.1 Occupancy.
Section 3.1.1 - Add new Section 3.1.1 to read as follows:
3.1.1 Occupancy. Occupancy classification and use shall be determined by Chapter 3 of the NYC Building Code.
Section 3.2 Definitions.
Section 3.2 - Add the definition of “accessory off-street loading berth” after the definition of “access hatch.” to read as follows:
accessory off-street loading berth: an off-street area that is used for the temporary parking of a commercial vehicle for the loading or unloading of goods or materials.
Section 3.2 - Add the definition of “alteration area” after the definition of “alteration.” to read as follows:
alteration area: The enclosed spaces marked on the submittal plans to be impacted by the alteration.
Section 3.2 - Delete the definition of “authority having jurisdiction,” after the definition of “attic and other roofs.” .
Section 3.2 - Add the definition of “authority having jurisdiction,” after the definition of “attic and other roofs.” to read as follows:
authority having jurisdiction: the commissioner or the commissioner's designee.
Section 3.2 - Add the definition of “automobile parking lift,” “automobile parking space.” after the definition of “automatic control device.” to read as follows:
automobile parking lift: a mechanical device designed to vertically lift automobiles and store them on a mobile elevated platform for the purpose of parking.
automobile parking space: a space within a building or private or public parking lot exclusive of driveways, ramps, columns, office and work areas, for the parking of an automobile.
Section 3.2 - Delete the definition of “baseline building performance,” after the definition of “baseline building design.” .
Section 3.2 - Add the definition of “baseline building performance,” after the definition of “baseline building design.” to read as follows:
baseline building performance: the annual site energy for a building design intended for use as a baseline for rating above-standard design or when using the Performance Rating Method as an alternative path for minimum standard compliance in accordance with Section 4.2.1.1.
Section 3.2 - Add the definition of “building core/shell,” after the definition of “building.” to read as follows:
building core/shell. A new building permit that only includes base building mechanical systems, water service systems, basic lighting and envelope before tenant fit-out as determined by the by the building official.
Section 3.2 - Add the definition of “clear-field U-factor” after the definition of “clear-field thermal bridge.” to read as follows:
clear-field U-factor. thermal performance factor that accounts for clear-field thermal bridges.
Section 3.2 - Add the definition of “demand responsive control,” “ demand response signal” after the definition of “demand control ventilation (DCV).” to read as follows:
demand responsive control: a control capable of receiving and automatically responding to a demand response signal.
demand response signal: a signal that indicates a price or a request to modify electricity consumption for a limited time period.
Section 3.2 - Delete the definition of “design energy cost,” after the definition of “design conditions.” .
Section 3.2 - Add the definition of “design site energy,” after the definition of “design conditions.” to read as follows:
design site energy: the annual site energy calculated for a proposed design.
Section 3.2 - Add the definitions of “electric vehicle (EV),” “electric vehicle capable space (EV capable space),” “electric vehicle direct current fast charging space (EV DCFC space),” “ electric vehicle ready space (EV ready space),” “electric vehicle supply equipment (EVSE),” “electric vehicle supply equipment installed space (EVSE space)” after the definition of “electric resistance.” to read as follows:
electric vehicle (EV): an automotive-type vehicle for on-road use, such as passenger automobiles, buses, trucks, vans, neighborhood electric vehicles, and electric motorcycles, primarily powered by an electric motor that draws current from a building electrical service, EVSE, a rechargeable storage battery, a fuel cell, a photovoltaic array, or another source of electric current. Plug-in hybrid electric vehicles are electric vehicles having a second source of motive power. Off-road, self-propelled electric mobile equipment, such as industrial trucks, hoists, lifts, transports, golf carts, airline ground support equipment, tractors, boats and the like, are not considered electric vehicles.
electric vehicle capable space (EV capable space): an automobile parking space that is provided with electrical infrastructure, such as, but not limited to, raceways, cables, enclosures, electrical capacity, and other electrical distribution equipment space, necessary for connection to EVSE.
electric vehicle direct current fast charging space (EV DCFC space): an automobile parking space that is provided with EVSE, capable of transferring power between the premises wiring and the electric vehicle by converting alternating current to high-power direct current.
electric vehicle ready space (EV ready space): an automobile parking space that is provided with a branch circuit and receptacle for connection to EVSE.
electric vehicle supply equipment (EVSE): equipment for plug-in power transfer including the ungrounded, grounded and equipment grounding conductors, and the electric vehicle connectors, attachment plugs, personal protection system and all other fittings, devices, power outlets or apparatus installed specifically for the purpose of transferring energy between the premises wiring and the electric vehicle.
electric vehicle supply equipment installed space (EVSE space): an automobile parking space where operational EVSE has been installed.
Section 3.2 - Add the definition of “energy management system” after the definition of “energy factor (EF).” to read as follows:
energy management system: a system that manages electrical power demand and is comprised of monitor(s), communications equipment, controller(s), timer(s), and other applicable devices.
Section 3.2 - Add the definition of “energy storage system (ESS)” after the definition of “energy recovery, series.” to read as follows:
energy storage system (ESS): one or more devices, assembled together, capable of storing energy in order to supply electrical energy at a future time.
Section 3.2 - Delete the definition of “envelope performance factor” after the definition of “entrance door.” .
Section 3.2 - Add the definition of “envelope performance factor” after the definition of “entrance door.” to read as follows:
envelope performance factor: the trade-off value for the building envelope performance compliance option, expressed in annual site energy, calculated using the procedures specified in Section 5.6. For the purposes of determining building envelope requirements, the classifications are defined as follows:
base envelope performance factor: the building envelope performance factor for the base design.
proposed envelope performance factor: the building envelope performance factor for the proposed design.
Section 3.2 - Delete the definition of “labeled” after the definition of “kilowatt (kW)” .
Section 3.2 - Add the definition of “labeled” after the definition of “kilowatt (kW)” to read as follows:
labeled: See Section 28-101.5 of the Administrative Code.
Section 3.2 - Delete the definition of “on-site renewable energy” after the definition of “on-site electricity generation systems” .
Section 3.2 - Add the definition of “on-site renewable energy” after the definition of “on-site electricity generation systems” to read as follows:
on-site renewable energy: energy derived from solar radiation, wind, waves, tides, landfill gas, biogas, biomass or the internal heat of the earth. The energy system providing on-site renewable energy shall be located on the project site.
Section 3.2 - Add the definition of “overall U-factor” after the definition of “outdoor (outside) air” to read as follows:
overall U-factor. U-factor of above grade walls that includes clear-field-, linear-, and point thermal bridges.
Section 3.2 - Delete the definition of “proposed building performance,” “proposed design” after the definition of “property” .
Section 3.2 - Add the definition of “proposed building performance,” and “proposed design” after the definition of “property” to read as follows:
proposed building performance: the annual site energy calculated for a proposed design.
proposed design: a computer representation of the actual proposed building design, or portion thereof, used as the basis for calculating the design site energy.
Section 3.2 - Add the definition of “site energy,” after the definition of “site” to read as follows:
site energy: the amount of fuel that is consumed on-site to operate a building.
Section 3.2 - Add the definition of “spandrel panel” after the definition of “space conditioning category” to read as follows:
spandrel panel: an opaque assembly within a fenestration framing system in a wall that is part of the building thermal envelope. Such panels are considered to be a portion of the opaque thermal envelope assembly.
Section 3.2 - Add the definition of “substantial energy alteration” after the definition of “substantial contact” to read as follows:
substantial energy alteration: An alteration that includes replacement of two or more of the following:
1. HVAC equipment or systems that account for more than 50 percent of the capacity serving either the heating or cooling loads of the alteration area. This includes HVAC unitary systems, HVAC terminal units, or components of HVAC central heating or cooling equipment. HVAC terminal units, for the purposes of this section, can include VAV boxes, fan-coil units, VRF room units, or water-loop heat pumps;
2. 50 percent or more of the luminaires in the alteration area;
3. 25 percent or more of the surface area of exterior building envelope enclosing the alteration area.
Section 4 - Administration and Enforcement
Section 4.2.1.1 New Buildings
Section 4.2.1.1 - Delete Section 4.2.1.1 in its entirety, and replace with a new Section 4.2.1.1 to read as follows:
4.2.1.1 New Buildings
New buildings shall comply with Sections 4.2.2 through 4.2.5 and either the provisions of
a. Sections 5, “Building Envelope”; 6, “Heating, Ventilating, and Air Conditioning”; 7, “Service Water Heating”; 8, “Power”; 9, “Lighting”; 10, “Other Equipment,” and 11, “Additional Efficiency Requirements or
b Normative Appendix G, “Performance Rating Method.”
When using Normative Appendix G, of new buildings, additions to existing buildings, and/or alterations shall comply with Section 4.2.1.1.1 and Section 4.2.1.1.2. Alterations to existing buildings shall comply with Section 4.2.1.1.1.
Section 4.2.1.1.1 Regulated Site Energy Index Target.
Section 4.2.1.1.1 - Add new Section 4.2.1.1.1 to read as follows:
4.2.1.1.1 Regulated Site Energy Index Target
The Regulated Site Energy Index (RSEI) shall be less than or equal to the Regulated Site Energy Index Target (RSEI t) calculated in accordance with the following:
RSEI t= [BBUSE + (BPF × BBRSE)] / BBP + 0.05
where:
RSEI = Regulated Site Energy Index calculated in accordance with Section G1.2.2.1.
BBUSE = baseline building design unregulated site energy use.
BBRSE = baseline building design regulated site energy use.
BPF = building performance factor from Table 4.2.1.1. For building area types not listed in Table 4.2.1.1 use “All others.” Where a building has multiple building area types, the required BPF shall be equal to the area-weighted average of the building area types based on their gross floor area.
Where a project includes an existing building and an addition to an existing building, the BPF shall be equal to the area-weighted average of the existing building BPF determined following Section 4.2.1.3 and the addition BPF from Table 4.2.1.1 based on the gross floor area.
BBP = baseline building performance.
Section 4.2.1.1.2 Total Site Energy Index Target .
Section 4.2.1.1.2 - Add new Section 4.2.1.1.2 to read as follows:
4.2.1.1.2 Total Site Energy Index Target
The Total Site Energy Index (TSEI) of new buildings and additions to existing buildings shall be less than or equal to the Total Site Energy Index Target (TSEI t) calculated in accordance with the following:
TSEIt = [BBUSE + (BPF × BBRSE)-PRE] / BBP
PRE = ARE * NPR * 3.412 * SA
PRE [kBtu]= prescriptive renewable energy
ARE [kWh/W] = annual renewable energy generation (kWh) per Watt of DC nameplate power rating from Table 4.2.1.1.2.
NPR [W/ft2]= renewable system Nameplate Power Rating per unit area from 2025 NYC ASHRAE 90.1 section 10.5.1.1.
SA [ft2] = Sum of the gross conditioned floor area for all floors up to the three largest floors
Table 4.2.1.1.2 Annual Renewable Energy Generation (ARE) by Climate Zone.
Table 4.2.1.1.2 - Add new Table 4.2.1.1.2 to read as follows:
Table 4.2.1.1.2 Annual Renewable Energy Generation (ARE) by Climate Zone
|
Climate Zone |
Annual Renewable Energy Generation (ARE) |
|
4A |
1.29 kWh |
|
5A |
1.23 kWh |
|
6A |
1.25 kWh |
Table 4.2.1.1 Building Performance Factor (BPF)
Table 4.2.1.1 - Delete Table 4.2.1.1 in its entirety, and replace with a new Table 4.2.1.1 to read as follows:
Table 4.2.1.1 Site Energy Building Performance Factor (BPF)
|
Building Area Type |
Climate Zones |
|
|
4A |
5A |
6A |
|
Multifamily |
0.47 |
0.45 |
0.47 |
|
Healthcare/hospital |
0.61 |
0.67 |
0.67 |
|
Hotel/motel |
0.54 |
0.53 |
0.51 |
|
Office |
0.43 |
0.45 |
0.43 |
|
Restaurant |
0.64 |
0.68 |
0.69 |
|
Retail |
0.38 |
0.40 |
0.41 |
|
School |
0.38 |
0.38 |
0.36 |
|
Warehouse |
0.22 |
0.27 |
0.29 |
|
All others |
0.46 |
0.48 |
0.48 |
Section 4.2.1.2 Additions to Existing Buildings
Section 4.2.1.2 - Delete Section 4.2.1.2 in its entirety, and replace with a new Section 4.2.1.2 to read as follows:
4.2.1.2 Additions to Existing Buildings
Additions to existing buildings shall comply with the provisions of Sections 4.2.2 through 4.2.5 and one of the following:
a. Sections 5, “Building Envelope”; 6, “Heating, Ventilating, and Air Conditioning”; 7, “Service Water Heating”; 8, “Power”; 9, “Lighting”; and 10, “Other Equipment,” and Section 11, “Additional Efficiency Requirements,” or
b. Normative Appendix G, “Performance Rating Method.” in accordance with Section 4.2.1.1 but with the prescriptive renewable energy requirements (PRE) for the addition only.
Section 4.2.1.2.1
Section 4.2.1.2.1 - Delete Section 4.2.1.2.1 in its entirety, and replace with a new Section 4.2.1.2.1 to read as follows:
4.2.1.2.1
When an addition to an existing building cannot comply by itself, trade-offs will be allowed by modification to one or more of the existing components of the existing building. Modeling of the modified components of the existing building and addition shall employ the procedures of Normative Appendix G; the addition shall not increase the energy consumption of the existing building plus the addition beyond the energy that would be consumed by the existing building plus the addition if the addition alone did comply.
Section 4.2.1.3 Alterations of Existing Buildings Assemblies, Systems, and Equipment
Section 4.2.1.3 - Delete Section 4.2.1.3 in its entirety, and replace with a new Section 4.2.1.3 to read as follows:
4.2.1.3 Alterations of Existing Buildings Assemblies, Systems, and Equipment
Alterations of existing buildings assemblies, systems, and equipment shall comply with the provisions of Sections 4.2.2 through 4.2.5 and one of the following:
a. Section 5, “Building Envelope”; Section 6, “Heating, Ventilating, and Air Conditioning”; Section 7, “Service Water Heating”; Section 8, “Power”; Section 9, “Lighting”; Section 10, “Other Equipment,” and Section 11, “Additional Efficiency Requirements, “or
b. Normative Appendix G, “Performance Rating Method.” in accordance with Section 4.2.1.1 with the following modifications:
1. Substantial energy alterations shall use the BPF from Table 4.2.1.1 multiplied by 1.05.
2. All other alterations modeled following Section G3.3 shall use BPF = 1.
3. PRE shall be equal to zero.
Nothing in this standard shall require compliance with any provision of this standard if such compliance will result in the increase of energy consumption of the building.
Exception to 4.2.1.3
Features of historic buildings need not comply with these requirements when a historic building report, prepared in accordance with Section 4.2.1.3.1, has been submitted and approved by the authority having jurisdiction.
Section 4.2.1.4 New Sites and New Site Systems and Equipment
Section 4.2.1.4 - Delete Section 4.2.1.4 in its entirety, and replace with a new Section 4.2.1.4 to read as follows:
4.2.1.4 New Sites and New Site Systems and Equipment.
New sites and new site systems and equipment shall comply with the provisions of Sections 6, “Heating, Ventilating, and Air Conditioning”; 7, “Service Water Heating”; 8, “Power”; 9, “Lighting”; and 10, “Other Equipment,”
Section 5 - Building Envelope.
Section 5.4.3.1.1
Section 5.4.3.1.2 - Delete Section 5.4.3.1.1 in its entirety, and replace with a new Section 5.4.3.1.1 to read as follows:
5.4.3.1.1
New buildings shall comply with measured air leakage requirements in Section 5.4.3.1.4 and continuous air barrier design and installation verification program performed in accordance with Section 5.9.1.2.
Section 5.4.3.1.2
Section 5.4.3.1.2 - Delete Section 5.4.3.1.2 in its entirety, and replace with a new Section 5.4.3.1.2 to read as follows:
5.4.3.1.2
Reserved
Section 5.4.3.1.4 Measured Air Leakage
Section 5.4.3.1.4 - Delete Section 5.4.3.1.4 in its entirety, and replace with a new Section 5.4.3.1.4 to read as follows:
5.4.3.1.4 Measured Air Leakage.
Where measured air leakage is used for compliance, the rate of air leakage of the building envelope shall not exceed 0.20 cfm/ft2 (1 L/s/m2) under a pressure differential of 75 Pa (0.30 in. of water), with this air leakage rate normalized by the sum of the above-grade and below-grade building envelope areas of the conditioned space and semiheated space and in accordance with this section.
a. Whole-building pressurization testing shall be conducted in accordance with ASTM E3158, ASTM E779 or ASTM E1827. Air leakage shall be measured following a multi-point regression method and then averaged from depressurization and pressurization tests.
For buildings greater than 50,000 square feet (4,645 m2), portions of the building shall be permitted to be tested following the procedures for a guarded test in ASTM E3158 and the measured air leakage shall be area-weighted by the surface areas of the building thermal envelope in each portion. The weighted average tested air leakage shall not be greater than the whole building leakage limit. The following portions of the building shall be tested:
1.1 The entire building thermal envelope area of stories that have any conditioned spaces directly under a roof.
1.2 The entire building thermal envelope area of stories that have a building entrance, have a floor over unconditioned space, have a loading dock, or that are below grade.
1.3 Representative above-grade portions of the building totaling not less than 25 percent of the wall area enclosing the remaining conditioned space.
Exception to 5.4.3.1.4(a)
Hospital, Museums and other occupancies approved by the commissioner may be permitted to only perform pressurization test to comply with the requirements of this section.
b. Where a building contains both conditioned space and semiheated space, compliance shall be shown using one of the following as applicable:
1. Separately for the conditioned space and for the semiheated space, with the air leakage rate for the conditioned space normalized by the exterior building envelope area of the conditioned space and the air leakage rate for the semiheated space normalized by the semiexterior building envelope area of the semiheated space
2. For the conditioned space and for the semiheated space together, with the air leakage rate for the overall space normalized by the sum of the exterior building envelope area and the semiexterior building envelope area minus the semiexterior building envelope area that separates the conditioned space from the semiheated space
c. Reporting shall be in compliance with Section 4.2.5.1.2.
Section 5.5.3 Opaque Elements.
Section 5.5.3 - Delete Section 5.5.3 in its entirety, and replace with a new Section 5.5.3 to read as follows:
5.5.3 Opaque Elements.
For all opaque, elements compliance with Tables 5.5-4 and 5.5-5 for each class of construction as described in Normative Appendix A, Sections A2 through A8 shall be demonstrated by one of the following two methods:
a. Providing a minimum rated R-value of insulation added to the assembly equal to or greater than the insulation minimum R-value required of each insulation component.
b. Providing insulation such that the maximum U-factor, C-factor, or F-factor for the entire assembly is not exceeded as determined by one of the following:
1. Precalculated values in accordance with Normative Appendix A, Section A1.1.
2. Applicant-determined values in accordance with Normative Appendix A, Section A1.2 where such values are approved by the building official.
Exceptions to 5.5.3
1. For opaque assemblies not complying with the classes of construction as described in Normative Appendix A, Sections A2 through A8, compliance with the maximum U-factors for the “attic and other” or “wood frame and other” opaque element conditions in Tables 5.5-4 and Table 5.5-5 shall be demonstrated by testing or calculations in accordance with Normative Appendix A, Section A9.1 where approved by the building official.
2. For multiple assemblies within a single class of construction for a single space conditioning category, compliance shall be shown for either (a) the most restrictive requirement or (b) an area-weighted average U-factor, C-factor, or F-factor.
3. When the total area of penetrations from through-the-wall equipment or equipment listed in Table 6.8.1-4 exceeds 1% of the opaque above-grade wall area, the mechanical equipment penetration area shall be calculated as a separate wall assembly with a default U-factor of 0.5, and compliance shall be shown with method b of this section. Where mechanical equipment has been tested in accordance with testing standards, approved by the authority having jurisdiction, the mechanical equipment penetration area may be calculated as a separate wall assembly with the U-factor as determined by such test.
4. For opaque assemblies in curtain wall framing or other fenestration framing systems, compliance shall be shown using the effective U-factor values of Table 5.5.3
Table 5.5.3 Effective U-factors for Spandrel Panels and Glass Curtain Wallsa.
Table 5.5.3 - Add a new Table 5.5.3 to read as follows:
Table 5.5.3 Effective U-factors for Spandrel Panels and Glass Curtain Wallsa
|
RATED R-VALUE OF INSULATION BETWEEN FRAMING MEMBERS |
None |
R-4 |
R-7 |
R-10 |
R-15 |
R-20 |
R-25 |
R-30 |
|
Frame Type |
Spandrel Panel |
Default U-factor |
|
Aluminum without thermal breakb |
Single glass pane, stone, or metal panel |
U-0.445 |
U-0.285 |
U-0.259 |
U-0.247 |
U-0.236 |
U-0.230 |
U-0.226 |
U-0.224 |
|
|
Double glazing with no low-e coatings |
U-0.356 |
U-0.273 |
U-0.254 |
U-0.244 |
U-0.234 |
U-0.229 |
U-0.226 |
U-0.223 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.313 |
U-0.263 |
U-0.249 |
U-0.241 |
U-0.233 |
U-0.228 |
U-0.225 |
U-0.223 |
|
Aluminum with thermal breakc |
Single glass pane, stone, or metal panel |
U-0.429 |
U-0.243 |
U-0.212 |
U-0.197 |
U-0.184 |
U-0.176 |
U-0.172 |
U-0.169 |
|
|
Double glazing with no low-e coatings |
U-0.328 |
U-0.228 |
U-0.205 |
U-0.193 |
U-0.182 |
U-0.175 |
U-0.171 |
U-0.168 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.277 |
U-0.217 |
U-0.199 |
U-0.189 |
U-0.180 |
U-0.174 |
U-0.170 |
U-0.167 |
|
Structural glazingd |
Single glass pane, stone, or metal panel |
U-0.428 |
U-0.217 |
U-0.180 |
U-0.161 |
U-0.145 |
U-0.136 |
U-0.130 |
U-0.126 |
|
|
Double glazing with no low-e coatings |
U-0.316 |
U-0.199 |
U-0.172 |
U-0.157 |
U-0.143 |
U-0.135 |
U-0.129 |
U-0.126 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.257 |
U-0.186 |
U-0.165 |
U-0.152 |
U-0.140 |
U-0.133 |
U-0.128 |
U-0.125 |
|
No framing or insulation is continuouse |
Single glass pane, stone, or metal panel |
U-0.445 |
U-0.160 |
U-0.108 |
U-0.082 |
U-0.058 |
U-0.045 |
U-0.037 |
U-0.031 |
|
|
Double glazing with no low-e coatings |
U-0.356 |
U-0.147 |
U-0.102 |
U-0.078 |
U-0.056 |
U-0.044 |
U-0.036 |
U-0.030 |
|
|
Triple glazing or double glazing with low-e glass |
U-0.313 |
U-0.139 |
U-0.098 |
U-0.076 |
U-0.055 |
U-0.043 |
U-0.035 |
U-0.030 |
a .Extrapolation outside of the table and interpolation between values in the table shall not be permitted. Assemblies with distance between framing less than 30 inches (762 mm), or not included in the default table, shall have a U-factor determined by testing in compliance with ASTM C1363 or modeling in compliance with ANSI/NFRC 100. Spandrel panel assemblies in the table do not include metal backpans. For designs with metal backpans, multiply the U-factor by 1.20. U-factors for spandrel panels include a 3/4 in. air gap and 5/8 in. gypsum board with Rvalue of 0.56 for the interior finish. The gypsum board is assumed to span between the window sill and a channel at the floor.
b. This frame type shall be used for systems that do not contain a non-metallic element that separates the metal exposed to the exterior from the metal that is exposed to the interior condition.
c. This frame type shall be used for systems where a urethane or other non-metallic element separates the metal exposed to the exterior from the metal that is exposed to the interior condition.
d. This frame type shall be used for systems that have no exposed mullion on the interior exterior.
e This frame type shall be used for systems where there is no framing, or the insulation is continuous across and uninterrupted by the framing (also known as mullion wrap).
Section 5.5.3.1.4 Roof Solar Reflectance and Thermal Emittance.
Section 5.5.3.1.4 - Delete Section 5.5.3.1.4 in its entirety, and replace with a new Section 5.5.3.1.4 to read as follows:
5.5.3.1.4 Roof Solar Reflectance and Thermal Emittance 5.5.3.1.1
Roofs in shall have a minimum Solar Reflectance Index of 64 as indicated in Table 5.5.3.1.4 when determined in accordance with the Solar Reflectance Index method in ASTM E1980 using a convection coefficient of 2.1 Btu/h•ft2•°F, based on three-year-aged solar reflectance and three-year-aged thermal emittance tested in accordance with CRRC S100.
The values for three-year-aged solar reflectance and three-year-aged thermal emittance shall be determined by a laboratory accredited by a nationally recognized accreditation organization and shall be labeled and certified by the manufacturer.
Exceptions to 5.5.3.1.4
1. Ballasted roofs with a minimum stone ballast of 17 lb/ft2 or 23 lb/ft2 pavers.
2. Vegetative roof systems that contain a minimum thickness of 2.5 in. of growing medium and covering a minimum of 75% of the roof area with durable plantings.
3. Roofs where a minimum of 75% of the roof area
3.1 is shaded during the peak sun angle on June 21 by permanent components or features of the building;
3.2 is covered by offset photovoltaic arrays, building-integrated photovoltaic arrays, or solar air or water collectors; or
3.3 is permitted to be interpolated using a combination of 1 and 2 above.
4. Steep-sloped roofs.
Table 5.5.3.1.4.
Table 5.5.3.1.4 - Add a new Table 5.5.3.1.4 to read as follows:
Table 5.5.3.1.4
|
Climate Zone |
0-3 |
4-5 |
6-8 |
|
Three-year-aged solar reflectance / 3-year aged thermal emittance |
0.63/0.75 |
0.55/0.75 |
N/a |
|
Three-year-aged solar reflectance index |
75 |
64 |
N/a |
Table 5.5-4 Building Envelope Requirements for Climate Zone 4 (A,B,C)*.
Table 5.5-4 - Delete Section Table 5.5-4 in its entirety.
Table 5.5-5 Building Envelope Requirements for Climate Zone 5 (A,B,C)*.
Table 5.5-5 - Delete Section Table 5.5-5 in its entirety.
Table 5.5-6 Building Envelope Requirements for Climate Zone 6 (A,B,C)*.
Table 5.5-6 - Delete Section Table 5.5-6 in its entirety.
Table 5.5-4 Values for Assembly Maximum U-Factor. C-Factor, and F-Factor Compliance for Climate Zones 4, 5, and 6 (A, B, C)*
Table 5.5-4 - Add a new Table 5.5-4 to read as follows:
Table 5.5-4 Values for Assembly Maximum U-Factor. C-Factor, and F-Factor Compliance for Climate Zones 4, 5, and 6 (A, B, C)*
|
CLIMATE ZONE |
4 |
5 |
6 |
4, 5, 6 |
|
|
Nonresidential |
Residential |
Nonresidential |
Residential |
Nonresidential |
Residential |
Semiheated |
|
Roofs |
|
Insulation entirely above deck |
U-0.030 |
U-0.030 |
U-0.030 |
U-0.030 |
U-0.028 |
U-0.028 |
U-0.063 |
|
Metal building |
U-0.035 |
U-0.035 |
U-0.035 |
U-0.035 |
U-0.028 |
U-0.026 |
U-0.060 |
|
Attic and other |
U-0.020 |
U-0.020 |
U-0.020 |
U-0.020 |
U-0.017 |
U-0.017 |
U-0.034 |
|
Walls, above gradea |
|
Mass |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.055 |
U-0.151b |
|
Metal building |
U-0.048 |
U-0.048 |
U-0.048 |
U-0.048 |
U-0.048 |
U-0.046 |
U-0.094 |
|
Steel-framed |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.044 |
U-0.084 |
|
Wood-framed and other |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.043 |
U-0.089 |
|
Walls, below grade |
|
Below-grade wall |
C-0.092 |
C-0.092 |
C-0.092 |
C-0.063 |
C-0.063 |
C-0.063 |
C-0.119 |
|
Floors |
|
Mass |
U-0.057 |
U-0.051 |
U-0.053 |
U-0.051 |
U-0.051 |
U-0.051 |
U-0.087 |
|
Steel joist |
U-0.033 |
U-0.033 |
U-0.033 |
U-0.033 |
U-0.027 |
U-0.027 |
U-0.052 |
|
Wood-framed and other |
U-0.033 |
U-0.033 |
U-0.033 |
U-0.033 |
U-0.027 |
U-0.027 |
U-0.051 |
|
Slab-on-grade floors |
|
Unheated |
F-0.52 |
F-0.52 |
F-0.52 |
F-0.51 |
F-0.51 |
F-0.434 |
F-0.73 |
|
Heated |
F-0.62 |
F-0.62 |
F-0.62 |
F-0.62 |
F-0.62 |
F-0.602 |
F-0.86 |
|
Opaque doors |
|
Swinging |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
U-0.37 |
|
Nonswinging |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.31 |
U-0.36 |
|
Vertical Fenestration (0% to 40% of Wall; VT≥1.1*SHGC) |
Assembly Max. U |
Assembly Max. SHGC |
Assembly Max. U |
Assembly Max. SHGC |
Assembly Max. U |
Assembly Max. SHGC |
Assembly Max. U (SHGC, VT = NR) |
|
Fixed |
U-0.28 |
0.36 |
U-0.28 |
0.32 |
U-0.28 |
0.34 |
U-0.39 |
|
Operable |
U-0.32 |
0.33 |
U-0.32 |
0.32 |
U-0.32 |
0.34 |
U-0.48 |
|
Entrance Door |
U-0.60 |
0.33 |
U-0.60 |
0.32 |
U-0.60 |
0.34 |
U-0.68 |
|
Skylight (0% to 3% of Roof) |
U-0.40 |
0.40 |
U-0.40 |
0.30 |
U-0.40 |
0.30 |
U-0.75 |
* NR = no requirement.
a. Walls, above grade enclosing conditioned space shall include thermal bridging mitigation in accordance with Section 5.5.5.
b. Exception to Section 5.5.3.2 applies for mass walls above grade.
Table 5.5-5 Values for Insulation Minimum R-value Compliance for Climate Zones 4, 5, and 6 (A, B, C)*
Table 5.5-5 - Add a new Table 5.5-5 to read as follows:
Table 5.5-5 Values for Insulation Minimum R-value Compliance for Climate Zones 4, 5, and 6 (A, B, C)*
|
CLIMATE ZONE |
4 |
5 |
6 |
4, 5, 6 |
|
|
Nonresidential |
Residential |
Nonresidential |
Residential |
Nonresidential |
Residential |
Semiheated |
|
Roofs |
|
Insulation entirely above deck |
R-33c.i. |
R-33c.i. |
R-33c.i. |
R-33c.i. |
R-35c.i. |
R-35c.i. |
R-15c.i. |
|
Metal buildinga |
R-19ca + R-11 Ls or R-25ca + R-8 Ls |
R-19ca + R-11 Ls or R-25ca + R-8 Ls |
R-19ca + R-11 Ls or R-25ca + R-8 Ls |
R-19ca + R-11 Ls or R-25ca + R-8 Ls |
R-30ca + R-11 Ls |
R-25ca + R-11 + R-11 Ls |
R-19ca + R-19 |
|
Attic and other |
R-53ca |
R-53ca |
R-53ca |
R-53ca |
R-60ca |
R-60ca |
R-30ca |
|
Walls, above gradeb |
|
Mass |
R-24ca+10c.i. or R-18c.i. |
R-24ca+10c.i. or R-18c.i. |
R-24ca+10c.i. or R-18c.i. |
R-24ca+10c.i. or R-18c.i. |
R-24ca+10c.i. or R-18c.i. |
R-24ca+10c.i. or R-18c.i. |
R-5.7c.i.c |
|
Metal building |
R-13ca+14.9c.i. |
R-13ca+14.9c.i. |
R-13ca+14.9c.i. |
R-13ca+14.9c.i. |
R-13ca+14.9c.i. |
R-13ca+15.8c.i. |
R-0 + 9.8c.i. |
|
Steel-framed |
R-21ca+14c.i. or R-24ca+12c.i. |
R-21ca+14c.i. or R-24ca+12c.i. |
R-21ca+14c.i. or R-24+12c.i. |
R-21ca+14c.i. or R-24ca+12c.i. |
R-21ca+14c.i. or R-24ca+12c.i. |
R-21ca+14c.i. or R-24ca+12c.i. |
R-13ca + 3.8c.i. |
|
Wood-framed and other |
R-21ca+6c.i. or R-25ca+4c.i. |
R-21ca+6c.i. or R-25ca+4c.i. |
R-21ca+6c.i. or R-15ca+10c.i. |
R-21ca+6c.i. or R-15ca+10c.i. |
R-21ca+6c.i. or R-15ca+10c.i. |
R-21ca+6c.i. or R-15ca+10c.i. |
R-13ca |
|
Walls, below grade |
|
Below-grade wall |
R-10c.i. |
R-10c.i. |
R-10c.i. |
R-15c.i. |
R-15c.i. |
R-15c.i. |
R-7.5c.i. |
|
Floors |
|
Mass |
R-14.6c.i. |
R-16.7c.i. |
R-16.7c.i. |
R-16.7c.i. |
R-16.7c.i. |
R-16.7c.i. |
R-8.3c.i. |
|
Steel joist |
R-30ca |
R-30ca |
R-30ca |
R-30ca |
R-38ca |
R-38ca |
R-19ca |
|
Wood-framed and other |
R-30ca |
R-30ca |
R-30ca |
R-30ca |
R-38ca |
R-38ca |
R-19ca |
|
Slab-on-grade floors |
|
Unheated |
R-15 for 24″ |
R-15 for 24″ |
R-15 for 24″ |
R-20 for 24″ |
R-20 for 24″ |
R-20 for 48″ |
NR |
|
Heated |
R-15 for 24” + R-5 full slab |
R-15 for 24” + R-5 full slab |
R-15 for 36” + R-5 full slab |
R-15 for 36” + R-5 full slab |
R-15 for 36” + R-5 full slab |
R-20 for 48” + R-5 full slab or R-15 full slab |
R-15 for 24” |
* The following definitions apply: c.i. = continuous insulation (see Section 3.2), FC = filled cavity (see Section A2.3.2.5), Ls = liner system (see Section A2.3.2.4); NR = no (insulation) requirement.
a. When using the R-value compliance method for metal building roofs, a thermal spacer block is required (see Section A2.3.2).
b. Walls, above grade enclosing conditioned space shall include thermal bridging mitigation in accordance with Section 5.5.5.
c. Exception to Section 5.5.3.2 applies for mass walls above grade.
Section 5.5.4.2.1 Vertical Fenestration Area.
Section 5.5.4.2.1 - Revise Section 5.5.4.2.1 to read as follows:
5.5.4.2.1 Vertical Fenestration Area
The total vertical fenestration area shall not be greater than that specified in Table 5.5-4.
Exception to 5.5.4.2.1
Vertical fenestration complying with Section 5.5.4.4.1, Exception 3.
Section 5.5.4.2.2 Maximum Skylight Fenestration Area.
Section 5.5.4.2.2 - Revise Section 5.5.4.2.2 to read as follows:
5.5.4.2.2 Maximum Skylight Fenestration Area
The total skylight area shall not be greater than that specified in Tables 5.5-4.
Exception to 5.5.4.2.2
The total skylight area is permitted to be increased to no greater than 6% of the gross roof area, provided the skylights meet all of the criteria in to Section 5.5.4.4.2, Exception 1 and the total daylight area under skylights is a minimum of half the floor area of the space.
Section 5.5.4.3 Fenestration U-Factor.
Section 5.5.4.3 - Revise Section 5.5.4.3 to read as follows:
5.5.4.3 Fenestration U-Factor
Fenestration shall have a U-factor not greater than that specified in Tables 5.5-4.
Exception to 5.5.4.3
The U-factor for skylights is permitted to be increased to no greater than 0.90 Btu/h•ft2•°F in Climate Zones 0 through 3 and 0.75 Btu/h•ft2•°F in Climate Zones 4 through 8, provided the sky- lights meet all of the criteria in to Section 5.5.4.4.2, Exception 1.
Section 5.5.4.4.1 SHGC of Vertical Fenestration.
Section 5.5.4.4.1 - Revise the first sentence of Section 5.5.4.4.1 to read as follows:
Vertical fenestration shall have an SHGC not greater than that specified in Table 5.5-4.
Section 5.5.4.4.2 SHGC of Skylights.
Section 5.5.4.4.2 - Revise the first sentence of Section 5.5.4.4.1 to read as follows:
Skylights shall have an SHGC not greater than that specified in Table 5.5-4.
Section 5.5.4.5 Fenestration Orientation.
Section 5.5.4.5 - Revise Section 5.5.4.5 to read as follows:
5.5.4.5 Fenestration Orientation
The vertical fenestration shall comply with either (a) or (b):
a. For Climate Zones 0 through 8,
AW ≤ (AT)/4 and AE ≤ (AT)/4
b. For Climate Zones 0 through 3,
AW × SHGCW ≤ (AT × SHGCC)/4 and
AE × SHGCE ≤ (AT × SHGCC)/4
For Climate Zones 4 through 8,
AW × SHGCW ≤ (AT × SHGCC)/5 and
AE × SHGCE ≤ (AT × SHGCC)/5
where
Aw = west-oriented vertical fenestration area
Ae = east-oriented vertical fenestration area
AT = total vertical fenestration area
SHGCC = SHGC criteria in Tables 5.5-4 for each climate zone
SHGCE = SHGC for east-oriented fenestration that complies with Section 5.5.4.4.1
SHGCW = SHGC for west-oriented fenestration that complies with Section 5.5.4.4.1
Exceptions to Section 5.5.4.5
1. Vertical fenestration that complies with Section 5.5.4.4.1, Exception (3).
2. Buildings with shade on 75% of the east- and west-oriented vertical fenestration areas
from permanent projections, existing buildings, existing permanent infrastructure, or
topography at 9 a.m. and 3 p.m., respectively, on the summer solstice (June 21 in the north- ern hemisphere).
3. Alterations and additions with no increase in vertical fenestration area.
4. Buildings where the west-oriented and east-oriented vertical fenestration area (as defined in Section 5.5.4.5) does not exceed 20% of the gross wall area for each of those façades, and SHGC on those facades is no greater than 90% of the criteria in Table 5.5-4.
5. Buildings in Climate Zone 8.
Section 5.5.4.6 Visible Transmittance/SHGC Ratio.
Section 5.5.4.6 - Revise the first sentence of Section 5.5.4.6 to read as follows:
Where automatic daylighting controls are required in accordance with Section 9.4.1.1(e) or (f), fenestration shall have a ratio of VT divided by SHGC not less than that specified in Table 5.5-4 for the appropriate fenestration area.
Section 5.5.5 Linear Thermal Bridges and Point Thermal Bridges.
Section 5.5.5 - Revise Section 5.5.5 to read as follows:
5.5.5 Linear Thermal Bridges and Point Thermal Bridges.
Where linear thermal bridges and point thermal bridges occur as described in Sections 5.5.5.1 through 5.5.5.5, they shall
a. comply with the applicable requirements of Sections 5.5.5.1 through 5.5.5.5 or
b. comply with A10.2.2.
For the purposes of Section 5.5.5, linear elements that are connected to the building structure by a series of point connections shall be permitted to be characterized as linear thermal bridges or as individual point thermal bridges.
Exceptions to 5.5.5:
1. Reserved
2. Semiheated spaces.
3. Clear-field thermal bridges.
4. Thermal bridges in uninsulated assemblies.
5. Linear and point thermal bridges that have a material thermal conductivity less than 3.0 Btu•in/h•ft2•°F.
6. Alterations to existing buildings other than additions.
7. Roofs that project over exterior walls.
Informative Note: For linear thermal bridges and point thermal bridges that fall under the provisions of Section 4.2 and cannot comply prescriptively with the provisions of Sections 5.5.5.1 through 5.5.5.4, projects can use Section 5.5.5.5, Normative Appendix C, or Normative Appendix G.
Section 5.5.5.1.1 Roof Edges.
Section 5.5.5.1.1 - Revise Section 5.5.5.1.1 to read as follows:
5.5.5.1.1 Roof Edges.
At roof edges without parapets or overhangs, the roof insulation and the wall insulation shall comply with the following, as applicable to the location of the insulation:
a. Where a wall has exterior continuous insulation, the roof insulation shall extend to the exterior of the wall insulation and the wall insulation shall extend to the roof insulation.
b. Where a wall has cavity or integral insulation that represents more than 50% of the total wall insulation R-value, the roof-to-wall insulation shall comply with one of the following:
1. The cavity or integral insulation shall extend to the underside of the roof insulation.
2. The cavity or integral insulation shall extend to the underside of the roof deck, and the roof insulation shall extend to the exterior face of the wall. The wall insulation shall be permitted to be interrupted by roof framing members.
3. Additional insulation having a rated R-value of insulation not less than R-5 shall extend inward on the underside of the roof deck for not less than 2 ft and be permitted to be interrupted by roof framing members.
4. Insulation having a rated R-value of insulation not less than R-5 shall be placed at the exterior of the roof edge and be located between the bottom plane of the roof insulation and the plane of the bottom of the roof deck.
5. The wall insulation values in Tables 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-1.6. The roof insulation values in Tables 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-2.
c. Where a mass wall has interior insulation that represents more than 50% of the total wall insulation R- value, the interior insulation shall extend to the underside of the roof deck, shall be permitted to be interrupted by framing members, and shall comply with one of the following:
1. Additional insulation having a rated R-value of insulation not less than R-5 shall extend inward on the underside of the roof deck for not less than 2 ft and be permitted to be interrupted by roof framing members.
2. Additional insulation having a rated R-value of insulation not less than R-5 shall be placed at the exterior of the roof edge and be located between the bottom plane of the roof insulation and the plane of the bottom of the roof assembly in contact with the exterior wall.
3. The wall insulation values in Tables 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-1.
4. The roof insulation values in Tables 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-2.
Informative Note: See Informative Appendix K, Figure K-1.
Section 5.5.5.1.2 Parapets.
Section 5.5.5.1.2 - Revise Section 5.5.5.1.2 to read as follows:
5.5.5.1.2 Parapets.
At roof edges with parapets, the exterior wall insulation shall comply with one or more of the following as applicable to the location of the insulation and wall assembly:
a. Where a wall has exterior continuous insulation, such insulation shall be applied to both vertical sides of the parapet.
Informative Note: See Informative Appendix K, Figure K-2(a).
b. Where a wall has cavity or integral insulation that represents more than 50% of the total wall insulation R-value, the roof to wall intersections at parapets shall comply with one of the following:
1. The wall insulation shall extend within the cavity of the parapet not less than the height of the top of the roof insulation. The wall insulation shall be permitted to be interrupted by roof framing members.
2. Additional insulation having a rated R-value of insulation not less than R-5 shall extend inward on the underside of the roof deck for not less than 2 ft and be permitted to be interrupted by roof framing members.
3. Insulation having a rated R-value of insulation not less than R-5 shall be placed at the exterior of the roof edge and be located between the bottom plane of the roof insulation and the plane of the bottom of the roof deck.
4. The wall insulation values in Table 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-1.
5. The roof insulation values in Table 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-2.
Informative Note: See Informative Appendix K, Figure K-2(b).
c. Where a mass wall has interior insulation that represents more than 50% of the total wall insulation R- value, the interior insulation shall extend to the underside of the roof deck, shall be permitted to be interrupted by framing members, and shall comply with one of the following:
1. Additional insulation having a rated R-value of insulation not less than R-5 shall extend inward on the underside of the roof deck for not less than 2 ft and be permitted to be interrupted by roof framing members.
2. Additional insulation having a rated R-value of insulation not less than R-5 shall be placed at the exterior of the roof edge and be located between the bottom plane of the roof insulation and the plane of the bottom of the roof assembly in contact with the exterior wall.
3. The wall insulation values in Table 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-1.
4. The roof insulation values in Table 5.5-5 shall be adjusted in accordance with Table 5.5.5.1.1-2.
Informative Note: See Informative Appendix K, Figures K-2(c) and K-2(d).
Section 5.5.5.2.1.
Section 5.5.5.2.1- Revise Section 5.5.5.2.1 to read as follows:
5.5.5.2.1
Intermediate floor edges that do not serve as balconies or floor overhangs shall comply with the following as applicable:
a. Where a wall has exterior continuous insulation, such insulation shall extend continuously past the floor edge.
b. Where a wall has cavity insulation that represents more than 50% of the total wall insulation R-value, the cavity insulation shall extend to the underside of the floor deck and shall be permitted to be interrupted by floor framing members and wall top and bottom plates or tracks. (Informative Note: See Informative Appendix K, Figures K-4[a] and K-4[b].)
c. Where a mass wall has integral insulation that represents more than 50% of the total wall insulation R- value, the intermediate floor intersection shall comply with one of the following:
1. The full thickness of integral insulation shall extend past the floor edge.
2. Where the intermediate floor deck extends through the integral insulation, insulation having a rated R-value of insulation not less than R-5 shall be maintained to the full depth of the floor edge on the exterior side of the floor edge.
See Informative Appendix K, Figures K-4(c) and K-4(d).
d. Where a mass wall has interior insulation that represents more than 50% of the total wall insulation R- value, the interior insulation shall extend to the underside of the floor deck, shall be permitted to be interrupted by framing members, and shall comply with one of the following:
1. Additional interior insulation having a rated R-value of insulation not less than R-5 shall cover the full depth of the floor edge. Such insulation shall be permitted to be interrupted by floor framing members. Fire safing applied to the full depth of the floor edge meets this requirement.
2. Additional insulation having a rated R-value of insulation not less than R-5 shall cover the full depth of the floor edge on the exterior side of the wall.
3. The wall insulation values in Table 5.5-5 shall be adjusted in accordance with Table 5.5.5.2.1.
Informative Note: See Informative Appendix K, Figures K-4(e) and K-4(f).
e. Where mass walls have not less than 50% of the rated R-value of insulation on the exterior side of the wall and the remainder on the interior side, the insulation on the interior side of the wall shall be permitted to be interrupted by an intermediate floor. (Informative Note: See Informative Appendix K, Figure K-4[g].)
Section 5.8.2.2 Labeling of Fenestration and Door Products.
Section 5.8.2.2 - Revise Section 5.8.2.2 to read as follows:
5.8.2.2 Labeling of Fenestration and Door Products.
All manufactured and site-built fenestration and door products shall demonstrate compliance with U-value and SHGC requirements through a 3rd party labeling program recognized by ANSI, ILACor MiRA and acceptable to the commissioner , or a signed and dated certificate showing compliance through modeling performed using Lawrence Berkley National Labs WINDOW/THERM software at the sizes and Boundary conditions prescribed in NFRC -100/200. The simulation shall be provided by a third-party recognized by ANSI, ILAC,MiRa or an NFRC certified simulator. Air infiltration rate shall be demonstrated by testing to ASTM E283, the test shall be conducted at an independent third-party laboratory recognized by ANSI, ILAC or MiRa, and shall be less than 5 years old.
Section 6 - Heating, Ventilating, and Air Conditioning.
Section 6.1.4.1.1.
Section 6.1.4.1.1 - Add new Section 6.1.4.1.1 to read as follows:
6.1.4.1.1 Where controls are altered for more than 50% of the terminal distribution elements of a space heating or cooling system, the controls for all commonly served terminals and the associated, immediately upstream equipment shall comply with the controls requirements of sections 6.4 and 6.5 as new. Controls for HVAC zones that are altered based on reconfiguration of the associated space notwithstanding alterations to the HVAC system shall comply with sections 6.4 and 6.5.
Exceptions:
1. Controls for terminals located in a space occupied by a different tenant than the altered space.
2. Control provisions of sections 6.4 and 6.5 which are impossible to achieve without an alteration of otherwise unaltered non-control elements of the associated plant equipment.
3. Alterations of controls limited to relocation of control devices within a HVAC zone where there is no reconfiguration of space.
Section 6.1.4.2.
Section 6.1.4.2- Revise Section 6.1.4.2 to read as follows:
6.1.4.2
New cooling systems installed to serve previously uncooled spaces and new heating systems installed to serve previously unheated spaces shall comply with this section as described in Section 6.2.
Section 6.3.2 Criteria.
Section 6.3.2- Revise Item “e” from Section 6.3.2to read as follows:
e. Heating (if any) shall be provided by a unitary packaged or split-system heat pump that meets the applicable efficiency requirements shown in Table 6.8.1-2 (heat pumps) or Table 6.8.1-4 (packaged terminal and room air conditioners and heat pumps), a fuel- fired furnace that meets the applicable efficiency requirements shown in Table 6.8.1-5 (furnaces, duct furnaces, and unit heaters), , or a baseboard system connected to a boiler that meets the applicable efficiency requirements shown in Table 6.8.1-6 (boilers) and Section 6.4.1.6 (Buildings With High Efficiency Space Heating Gas Boiler Systems). Heating equipment shall also comply with Section 6.4.14.
Revise Item “h” from Section 6.3.2 to read as follows:
h. If a heat pump equipped with auxiliary internal electric resistance heaters is installed, controls shall be provided that prevent supplemental heater operation when the heat- ing load can be met by the heat pump alone during both steady-state operation and setback recovery. Supplemental heater operation is permitted during outdoor coil defrost cycles. The heat pump must be controlled by either (1) a digital or electronic thermostat designed for heat pump use that energizes auxiliary heat only when the heat pump has insufficient capacity to maintain set point or to warm up the space at a sufficient rate or (2) a multistage space thermostat and an outdoor air thermostat wired to energize auxiliary heat only on the last stage of the space thermostat and when outdoor air temperature is less than 17 °F.
Exception to 6.3.2(h)
Heat pumps that comply with the following:
1. Have a minimum efficiency regulated by NAECA.
2. Meet the requirements in Table 6.8.1-2.
3. Include all usage of internal electric resistance heating.
Revise Item “k” from Section 6.3.2 to read as follows:
k. Systems serving residential spaces other than hotel/motel guest rooms shall comply with Sections 6.4.3.3.1 and 6.4.3.3.2
Section 6.4.1.6 Buildings With High Efficiency Space Heating Gas Boiler Systems.
Section 6.4.1.6 - Add new Section 6.4.1.6 to read as follows:
6.4.1.6 Buildings With High Efficiency Space Heating Gas Boiler Systems
New buildings where space heating is served by one or more gas hot water boilers with a minimum thermal efficiency (Et) of 90% when rated in accordance with the test procedures in Table 6.5.4.1 shall comply with this section, unless otherwise approved by the authority having jurisdiction. The hot water distribution system shall be designed so that the coils and other heat exchangers are selected such that at outdoor design conditions, the hot water return temperature entering the boilers is120°F, or less when the boiler is firing.
Section 6.4.3.13 Demand Responsive Controls.
Section 6.4.3.13 - Add new Section 6.4.3.13, Section 6.4.3.13.1, Section 6.4.3.13.2 to read as follows:
6.4.3.13 Demand Responsive Controls.
Electric heating and cooling systems shall be provided with demand responsive controls capable of executing the following actions in response to a demand response signal:
1. Automatically increase the zone operating cooling set point by the following values: 1°F (0.5°C), 2°F (1°C), 3°F (1.5°C), and 4°F (2°C).
2. Automatically decreasing the zone operating heating set point by the following values 1°F (0.5°C), 2°F (1°C), 3°F (1.5°C), and 4°F (2°C) while maintaining the minimum room temperature requirements of the New York City Codes, Multiple Dwelling Law and Housing Maintenance code.
Where a demand response signal is not present, the heating and cooling system controls shall be capable of performing all other functions. Where thermostats are controlled by direct digital control including, but not limited to, an energy management system, the system shall be capable of demand responsive control and capable of adjusting all thermal set-points to comply. The demand responsive controls shall comply with either Section 6.4.3.13.1 or Section 6.4.3.13.2.
Exceptions:
1. Group I occupancies in accordance with the New York City Building Code.
2. Group H occupancies in accordance with the New York City Building Code.
3. Controls serving data center systems.
4. Occupancies or uses requiring precision in indoor temperature control as approved by the building official.
6.4.3.13.1 Low-Capacity Staged Systems.
Thermostats for air conditioners and heat pumps with two or more stages of control and a cooling capacity less than 65,000 Btu/h (19 Kw) shall be provided with a demand responsive control that complies with the communication and performance requirements of AHRI 1380.
6.4.3.13.2 All Other Heating and Cooling Systems.
Thermostats for heating and cooling systems shall be provided with a demand responsive control that complies with one of the following:
1. Certified OpenADR 2.0a VEN, as specified under Clause 11, Conformance.
2. Certified OpenADR 2.0b VEN, as specified under Clause 11, Conformance.
3. Certified by the manufacturer as being capable of responding to a demand response signal from a certified OpenADR 2.0b VEN by automatically implementing the control functions requested by the VEN for the equipment it controls.
4. IEC 62746-10-1.
5. The communication protocol required by a controlling entity, such as a utility or service provider, to participate in an automated demand response program.
6. The physical configuration and communication protocol of CTA 2045-A or CTA 2045-B.
Section 6.4.4.1.3 Piping Insulation.
Section 6.4.4.1.3- Remove exception 3 from Section 6.4.4.1.3.
Section 6.5.6.1.1 Nontransient Dwelling Units.
Section 6.5.6.1.1- Revise Section 6.5.6.1.1 to read as follows:
6.5.6.1.1 Nontransient Dwelling Units
Nontransient dwelling units shall be provided with outdoor air ventilation systems in accordance with section 403.3.1.6 of the New York City Mechanical Code. For nontransient dwelling units, energy recovery systems shall be provided and result in an enthalpy recovery ratio of at least 50 percent at cooling design condition. At the heating design condition, energy recovery performance shall be as follows:
a. Where active humidification is provided to spaces served by the system, energy recovery systems shall result in an enthalpy recovery ratio of at least 60%.
b. Where active humidification is not provided to spaces served by the system, energy recovery systems shall result in a sensible energy recovery ratio of at least 65 percent.
The energy recovery system shall provide the required enthalpy recovery ratio or sensible energy recovery ratio at both heating and cooling design conditions, unless one mode is not required for the climate zone by the exceptions below.
Exceptions to 6.5.6.1.1
1. (Reserved)
2. (Reserved)
3. (Reserved)
4. Enthalpy recovery ratio requirements at cooling design condition in Climate Zones 4.
Section 6.5.6.1.2 Spaces Other than Nontransient Dwelling Units.
Section 6.5.6.1.2 - Revise Section 6.5.6.1.2 to read as follows:
6.5.6.1.2 Spaces Other than Nontransient Dwelling Units
Each fan system serving spaces other than nontransient dwelling units shall have a ventilation system in accordance with Section 403.3.1.6 of the New York City Mechanical Code. Where the design supply fan airflow rate exceeds the value listed in Tables 6.5.6.1.2-1 and 6.5.6.1.2-2, based on the climate zone and percentage of outdoor air at design airflow conditions an energy recovery system shall be provided. Table 6.5.6.1.2-1 shall be used for all ventilation systems that operate less than 8000 hours per year, and Table 6.5.6.1.2-1 shall be used for all ventilation systems that operate 8000 or more hours per year.
Exceptions to 6.5.6.1.2
1. Laboratory systems meeting Section 6.5.7.3.
2. Systems serving spaces that are not cooled and that are heated to less than 60°F.
3. Heating energy recovery where more than 60% of the outdoor air heating energy is pro- vided from site-recovered energy or on- site- energy in Climate Zones 5 and 6.
4. (Reserved)
5. (Reserved)
6. Where the sum of the airflow rates exhausted and relieved within 20 ft of each other is less than 75% of the design ventilation outdoor airflow rate, excluding exhaust air that is any of the following:
a. used for another energy recovery system,
b. not allowed by ASHRAE/ASHE Standard 170 for use in energy recovery systems with leakage potential, or
c. prohibited by the New York City Mechanical Code, or
d. of Class 4 as defined in ASHRAE Standard 62.1.
7. Systems in Climate Zone 4 requiring dehumidification during heating mode that employ energy recovery and have a minimum SERR of 0.40.
8. Systems expected to operate less than 20 hours per week at the outdoor air percentage covered by Table 6.5.6.1.2-1.
9. Indoor pool dehumidifiers meeting Section 6.5.6.4.
Section 6.6.2.2 Criteria.
Section 6.6.2.2 -Revise Section 6.6.2.2 to read as follows:
6.6.2.2 Criteria.
HVAC systems in new buildings, additions, or alterations shall comply with the requirements in Section L2, “Mechanical System Performance Rating Method.” following either the Prescriptive TSPR Compliance Path in Section L2.1.2.1 or the Modeling-based TSPR Compliance Path in Section L2.1.2.2.
Table 6.6.2.2 Mechanical Performance Factors (MPF).
Table 6.6.2.2 -Revise Table 6.6.2.2 to read as follows:
Table 6.6.2.2 Mechanical Performance Factors (MPF), Site Energy Basis
|
Building Type |
Climate Zones |
|
|
4A |
5A |
6A |
|
Office (small and medium)a |
0.56 |
0.51 |
0.51 |
|
Office (large)a |
0.45 |
0.35 |
0.31 |
|
Retail |
0.39 |
0.36 |
0.38 |
|
Hotel/motel |
0.58 |
0.47 |
0.43 |
|
Multifamily/dormitory |
0.48 |
0.43 |
0.42 |
|
School/education |
0.83 |
0.81 |
0.81 |
Section 6.7.3.4 System Balancing.
Section 6.7.3.4 - Delete Section 6.7.3.3, Section 6.7.3.3.1, Section 6.7.3.3.2, Section 6.7.3.3.3 and add new Section 6.7.3.3, Section 6.7.3.3.1, Section 6.7.3.4, Section 6.7.3.4.1, Section 6.7.3.4.2, Section 6.7.3.4.3, Section 6.7.3.5, Section 6.7.3.5.1, Section 6.7.3.5.2, Section 6.7.3.5.3, Section 6.7.3.5.4, Section 6.7.3.5.4.1, Section 6.7.3.5.4.2, Section 6.7.3.5.5, Section 6.7.3.5.5.1, Section 6.7.3.5.5.2, Section 6.7.3.5.5.3, and Section 6.7.3.5.5.4 in their entirety.
6.7.3.3 Mechanical, renewable energy, and service water heating systems commissioning and completion requirements.
Prior to passing the final mechanical and plumbing inspections, the approved agency shall provide evidence of mechanical systems commissioning and completion in accordance with the provisions of this section.
Construction document notes shall clearly indicate provisions for commissioning and completion requirements in accordance with this section and are permitted to refer to specifications for further requirements. Copies of all documentation shall be given to the owner or owner’s authorized agent and made available to the building official upon request in accordance with Sections 6.7.3.5.4 and 6.7.3.5.5.
Mechanical systems, renewable energy, and service water heating systems shall include but are not limited to, at a minimum, the following heating, ventilating, air conditioning, service water heating, indoor air quality and refrigeration systems (mechanical and/or passive) and associated controls:
a. Heating, cooling, air handling and distribution, ventilation, and exhaust systems, and their related air quality monitoring systems.
b. Air, water, and other energy recovery systems
c. Manual or automatic controls, whether local or remote, on energy using systems including but not limited to temperature controls, setback sequences, and occupancy based control, including energy management functions of the building management system.
d. Plumbing, including insulation of piping and associated valves, domestic and process water pumping, and mixing systems.
e. Mechanical heating systems and service water heating systems.
f. Refrigeration systems
g. Renewable energy and energy storage systems.
h. Other systems, equipment and components that are used for heating, cooling or ventilation and that affect energy use.
Exceptions to 6.7.3.3
1. Mechanical systems and service hot water systems in new buildings, additions, or alterations where either the total mechanical equipment capacity being installed or the total mechanical equipment connected load serving the alteration space is less than 480,000 Btu/h (140.7 kW) cooling capacity and 600,000 Btu/h (175.8 kW) combined service water-heating and space-heating capacity.
2. Renewable energy systems being installed with a generating capacity of less than 25kW.
6.7.3.3.1 Commissioning Plan
A commissioning plan shall be developed by an approved agency and shall include the following items:
a. A narrative description of the activities that will be accomplished during each phase of commissioning, including the personnel intended to accomplish each of the activities.
b. A listing of the specific equipment, appliances or systems to be tested, their full sequences of operation, and a description of the tests to be performed, including prerequisite activities and reference to specific checklists or worksheets which are necessary or required by the department.
c. Functions to be tested including, but not limited to, calibrations and economizer controls.
d. Conditions under which the test will be performed. Testing shall affirm winter and summer design conditions and full outside air conditions.
e. Measurable criteria for performance.
6.7.3.4 System Balancing
6.7.3.4.1 Systems Adjusting and Balancing
HVAC systems be balanced in accordance with ASHRAE 111, “Testing, Adjusting, and Balancing of Building HVAC Systems” or other accepted engineering standards as approved by the department. Air and water flow rates shall be measured and adjusted to deliver final flow rates within the tolerances provided in the product specifications. Test and balance activities shall include air system and hydronic system balancing.
6.7.3.4.2 Air Systems Balancing
Each supply air outlet and zone terminal device shall be equipped with means for air balancing in accordance with the requirements of Chapter 6 of the New York City Mechanical Code. Discharge dampers used for air-system balancing are prohibited on constant-volume fans and variable-volume fans with motors 10 hp and larger. Air systems shall be balanced in a manner to first minimize throttling losses then, for fans with system power of greater than 1 hp, fan speed shall be adjusted to meet design flow conditions.
6.7.3.4.3Hydronic Systems Balancing
Individual hydronic heating and cooling coils shall be equipped with means for balancing and measuring flow. Hydronic systems shall be proportionately balanced in a manner to first minimize throttling losses, then the pump impeller shall be trimmed or pump speed shall be adjusted to meet design flow conditions. Each hydronic system shall have either the capability to measure pressure across the pump, or test ports at each side of each pump.
Exceptions to 6.7.3.3.3
The following equipment is not required to be equipped with a means for balancing or measuring flow:
a. Pumps with pump motors of 5 hp or less.
b. Where throttling results in no greater than 5 % of the nameplate horsepower draw above that required if the impeller were trimmed.
6.7.3.5 Functional Performance Testing
Functional performance testing specified in Sections 6.7.3.5.1 through 6.7.3.5.3 shall be conducted.
6.7.3.5.1 Equipment
Equipment functional performance testing shall demonstrate the installation and operation of components, systems, and system-to-system interfacing relationships in accordance with approved plans and specifications such that operation, function, and maintenance serviceability for each of the commissioned systems is confirmed. Testing shall include all modes and sequence of operation, including under full-load, part-load and the following emergency conditions:
a. All modes as described in the sequence of operation.
b. Redundant or automatic back-up mode.
c. Performance of alarms.
d. Mode of operation upon a loss of power and restoration of power.
Exception to 6.7.3.5.1
Unitary or packaged HVAC equipment listed in Tables 6.8.1-1, 6.8.1-2, or 6.8.1-4 that do not require supply air economizers shall only be required to demonstrate functioning under full-load and part-load conditions.
6.7.3.5.2 Controls
HVAC and service water-heating control systems shall be tested to document that control devices, components, equipment and systems are calibrated and adjusted and operate in accordance with approved plans and specifications. Sequences of operation shall be functionally tested to document they operate in accordance with approved plans and specifications.
6.7.3.5.3 Economizers
Air economizers shall undergo a functional test to determine that they operate in accordance with manufacturer’s specifications.
6.7.3.5.4 Preliminary Commissioning Report
A preliminary report of commissioning test procedures and results shall be completed and certified by the approved agency and provided to the building owner or owner’s authorized agent. The report shall be organized with mechanical and service hot water findings in separate sections to allow independent review. The report shall be identified as “Preliminary Commissioning Report” and shall include the completed Commissioning Compliance Checklist, and shall identify:
a. Itemization of deficiencies found during testing required by this section that have not been corrected at the time of report preparation.
b. Deferred tests that cannot be performed at the time of report preparation because of climatic conditions.
c. Climatic conditions required for performance of the deferred tests.
d. Results of functional performance tests.
e. Functional performance test procedures used during the commissioning process, including measurable criteria for test acceptance.
6.7.3.5.4.1 Acceptance of Report
Buildings, or portions thereof, shall not be considered acceptable for a final inspection pursuant to Article 116 of Chapter 1 of Title 28 of the Administrative Code until the building official has received a letter of transmittal from the building owner acknowledging that the building owner or owner’s authorized agent has received the Preliminary Commissioning Report.
6.7. 3.5.4.2 Copy of Report
The building official shall be permitted to require that a copy of the Preliminary Commissioning Report be made available for review by the building official.
6.7.3.5.5 Documentation Requirements
The construction documents shall specify that the documents described in Sections 6.7.3.5.5.1 through 6.7.2.3.5.3 be provided to the building owner or owner’s authorized agent within 90 days of the date of receipt of the certificate of occupancy. The construction documents shall also specify that the Final Commissioning Report be provided to the building owner or owner’s authorized agent in accordance with the requirements of Section 6.7.3.5.5.4.
6.7.3.5.5.1 Drawings
Construction documents shall include the location and performance data on each piece of equipment.
6.7.3.5.5.2 Manuals
An operating and maintenance manual shall be provided and include all of the following:
a. Submittal data stating equipment size and selected options for each piece of equipment requiring maintenance.
b. Manufacturer’s operation manuals and maintenance manuals for each piece of equipment requiring maintenance, except equipment not furnished as part of the project. Required routine maintenance actions shall be clearly identified.
c. Name and address of at least one service agency.
d. HVAC and service hot water controls system maintenance and calibration information, including wiring diagrams, schematics and control sequence descriptions. Desired or field-determined set points shall be permanently recorded on control drawings at control devices or, for digital control systems, in system programming instructions.
6.7.3.5.5.3 System Balancing Report
A written report describing the activities and measurements completed in accordance with Section 6.7.2.3.2.
6.7.3.5.5.4 Final Commissioning Report
Within 30 months for new buildings 500,000 gross square feet or greater, excluding R-2 occupancies, or within 18 months for R-2 occupancies and all other buildings, of the issuance of the certificate of occupancy or letter of completion, an approved agency shall prepare a report of test procedures and results, including test procedures and results performed after occupancy, identified as the “Final Commissioning Report”, provide such report to the building owner, and submit a certification to the department with applicable fees in accordance with department rules. The owner of a building 500,000 gross square feet or greater may apply for an extension of time to the building official based on good cause, in accordance with department rules. Such report shall include the following:
a. Results of functional performance tests.
b. Disposition of deficiencies found during testing, including details of corrective measures used or proposed.
c. Functional performance test procedures used during the commissioning process including measurable criteria for test acceptance, provided herein for repeatability.
Exception to 6.7.3.5.5.4
Deferred tests that cannot be performed at the time of report preparation due to climatic conditions.
Section 7 - Service Water Heating.
Section 7.2.1 Requirements for All Compliance Paths.
Section 7.2.1- Revise Section 7.2.1 to read as follows:
7.2.1 Requirements for All Compliance Paths
Service water heating systems and equipment shall comply with Sections 7.1, “General”; 7.4, “Mandatory Provisions”; 7.7, “Submittals”; Section 6.7.3.3, “Mechanical, renewable energy, and service water heating systems commissioning and completion requirements”; and 7.8, “Product Information.”
Section 7.4.7 Demand responsive water heating.
Section 7.4.7 - Add new Section 7.4.7 to read as follows:
7.4.7 Demand responsive water heating.
Electric storage water heaters with a rated water storage volume of 40 gallons (150L) to 120 gallons (450L) and a nameplate input rating equal to or less than 12kW shall be provided with demand responsive controls in accordance with Table 7.4-3.
Exceptions:
1. Water heaters that provide a hot water delivery temperature of 180°F (82°C) or greater.
2. Water heaters that comply with Section IV, Part HLW or Section X of the ASME Boiler and Pressure Vessel Code.
3. Water heaters that use 3-phase electric power.
Table 7.4-3 Demand Responsive Controls for Water Heating.
Table 7.4-3 - Add new Table 7.4-3 to read as follows:
Table 7.4-3 Demand Responsive Controls for Water Heating
|
Equipment Type |
Controls |
|
|
Manufactured before 7/1/2025 |
Manufactured on or after 7/1/2025 |
|
Electric storage Water heaters |
AHRI Standard 1430 or ANSI/CTA-2045-B Level 1 and also capable of initiating water heating to meet the temperature set point in response to a demand response signal. |
AHRI Standard 1430 |
Section 8 - Power.
Section 8.4.3.1 Monitoring.
Section 8.4.3.1 - Revise Section 8.4.3.1 to read as follows:
8.4.3.1 Monitoring
Measurement devices shall be installed in new buildings to monitor the electrical energy use for each of the following separately:
a. Total electrical energy
b. HVAC systems
c. Interior lighting
d. Exterior lighting
e. Receptacle circuits
f. Refrigeration systems
g. Electric vehicle charging
For buildings with tenants, these systems shall be separately monitored for the total build- ing and (excluding shared systems) for each individual tenant.
Exception to 8.4.3.1
Where the design load for each of any of the categories (b) through (f) are less than 10% of the whole-building load, these categories shall be allowed to be loads combined with other categories.
Section 8.4.3.2 Recording and Reporting.
Section 8.4.3.2 - Revise the exceptions from Section 8.4.3.2 to read as follows:
Exceptions to Sections 8.4.3.1 and 8.4.3.2
1. Building less than 10,000 ft2.
2. Individual tenant spaces less than 5,000 ft2.
3. Dwelling units.
4. Residential buildings with less than 10,000 ft2 of common area.
5. Critical equipment and life-safety branches of NFPA 70 Article 517.
Section 8.4.5 Electrification Ready
Section 8.4.5 - Delete Section 8.4.5 .
Section 8.4.5 Measurement of electrical consumption of tenant spaces in covered buildings.
Section 8.4.5 - Add new Section 8.4.5 to read as follows:
8.4.5 Measurement of electrical consumption of tenant spaces in covered buildings
Each covered tenant space in a new building shall be equipped with a separate meter or sub-meter to measure the electrical consumption of such space when let or sublet. The terms covered building, meter, sub-meter, tenant space and covered tenant space shall have the same meanings as defined in Section 28-311.2 of the NYC Administrative Code.
Section 8.4.6 Dwelling unit metering.
Section 8.4.6 - Add new Section 8.4.6 to read as follows:
8.4.6 Dwelling unit metering.
Each dwelling unit located in a Group R-2 building shall have a separate electrical meter.
Section 9 - Lighting.
Section 9.2.1 Requirements for All Compliance Paths.
Section 9.2.1- Revise item “e” from Section 9.2.1to read as follows:
e. Reserved
Section 9.4.1.1 Interior Lighting Controls.
Section 9.4.1.1 - Revise item “g” from Section 9.4.1.1 to read as follows:
g. Automatic reduction control (full OFF complies): The general lighting power in the space shall be automatically reduced by at least 50% within 15 minutes of all occupants leaving the space. The controls in open plan offices, cafeteria dining areas, and fast food dining areas, 300 ft2 and greater in area, shall be configured so that general lighting power in each control zone is reduced by not less than 80% of the full zone general lighting power in a reasonably uniform illumination pattern within 15 minutes of all occupants leaving that control zone. Control functions that switch control zone lights completely off when the zone is vacant meet this requirement.
In offices greater than300 ft2, control zones for general lighting shall
1. be limited to 600 ft2 and
2. automatically reduce general lighting by at least 80% of full power within 15 minutes of all occupants leaving a control zone.
Section 9.4.1.1 - Revise item “h” from Section 9.4.1.1 to read as follows:
h. Automatic full OFF control: All lighting in the space, including lighting connected to emergency circuits, shall be automatically shut off within 15 minutes of all occupants leaving the space. A control device meeting this requirement shall control no more than 5000 ft2 , provided that for open plan office spaces or dining spaces a control device meeting this requirement shall control not greater than 600 ft2.
Exception to 9.4.1.1(h)
The following lighting is not required to be automatically shut off:
1. Lighting required for 24/7 operation.
2. Lighting in spaces where patient care is rendered.
3. General lighting and task lighting in spaces where automatic shutoff would endanger the safety or security of the room or building occupants.
4. Lighting load exceeding 0.02 W/ft2 multiplied by the gross lighted floor area of the building.
Section 9.4.1.5 Demand responsive lighting controls.
Section 9.4.1.5 - Add new Section 9.4.1.5 to read as follows:
9.4.1.5 Demand responsive lighting controls. Interior general lighting in Group B, E, M, and S occupancies shall have demand responsive controls complying with Section 9.4.1.5.1 in not less than 75 percent of the interior floor area.
Exceptions:
1. Where the combined interior floor area of Group B, E, M, and S occupancies is less than 10,000 square feet.
2. Buildings where a demand response signal is not available from a controlling entity other than the owner.
3. Parking garages.
4. Ambulatory care facilities.
5. Outpatient clinics.
6. Physician or dental offices.
Section 9.4.1.5.1 Demand responsive lighting controls function.
Section 9.4.1.5.1 - Add new Section 9.4.1.5.1 to read as follows:
9.4.1.5.1 Demand responsive lighting controls function. Demand responsive controls for lighting shall be capable of the following:
1. Automatically reducing the output of controlled lighting to 80 percent or less of full power or light output upon receipt of a demand response signal.
2. Where high-end trim has been set, automatically reducing the output of controlled lighting to 80 percent or less of the high-end trim setpoint upon receipt of a demand response signal.
3. Dimming controlled lights gradually and continuously over a period of not longer than 15 minutes to achieve their demand response setpoint.
4. Returning controlled lighting to its normal operational settings at the end of the demand response period.
Exception: Storage rooms and warehouse storage areas shall be permitted to switch off 25 percent or more of general lighting power rather than dimming. C
Section 9.4.3.1 Lamp and Luminaire Efficacy.
Section 9.4.3.1 - Revise Section 9.4.3.1 to read as follows:
9.4.3.1 Lamp and Luminaire Efficacy.
At least 90% of the permanently installed luminaires shall use lamps with an efficacy of at least 75 lm/W or have a total luminaire efficacy of at least 50 lm/W.
Section 9.4.4 Horticultural Lighting.
Section 9.4.4 - Delete Section 9.4.4, Section 9.4.4.1 and 9.4.4.2 and add new Section 9.4.4 to read as follows:
9.4.4 Horticultural Lighting.
Luminaires in indoor grow spaces and greenhouse buildings used for horticultural lighting shall have a photosynthetic photon efficacy (PPE) of at least 2.1 μmol/J. Horticultural lighting in greenhouse spaces and indoor grow spaces shall be controlled by a device that automatically turns off the horticultural lighting at specific programmed times.
Table 9.5.1 Lighting Power Density Allowances Using the Building Area Method.
Table 9.5.1 - Delete Table 9.5.1and add new Table 9.5.1 to read as follows:
Table 9.5.1 Lighting Power Density Allowances Using the
Building Area Method
|
Building Area Typea |
LPD, W/ft2 |
|
Automotive facility |
0.64 |
|
Convention center |
0.64 |
|
Courthouse |
0.74 |
|
Dining: Bar lounge/leisure |
0.69 |
|
Dining: Cafeteria/fast food |
0.66 |
|
Dining: Family |
0.61 |
|
Dormitory |
0.52 |
|
Exercise center |
0.65 |
|
Fire station |
0.50 |
|
Gymnasium |
0.67 |
|
Health-care clinic |
0.68 |
|
Hospital |
0.86 |
|
Hotel/motel |
0.53 |
|
Library |
0.78 |
|
Manufacturing facility |
0.60 |
|
Motion picture theater |
0.43 |
|
Multifamily |
0.46 |
|
Museum |
0.56 |
|
Office |
0.62 |
|
Parking garage |
0.12 |
|
Penitentiary |
0.65 |
|
Performing arts theater |
0.82 |
|
Police station |
0.62 |
|
Post office |
0.62 |
|
Religious facility |
0.66 |
|
Retail |
0.78 |
|
School/university |
0.67 |
|
Sports arena |
0.73 |
|
Town hall |
0.67 |
|
Transportation |
0.51 |
|
Warehouse |
0.41 |
|
Workshop |
0.83 |
a. In cases where both a general building area type and a specific building area type are listed, the specific building area type shall apply.
b. Neither the area of the dwelling units nor the wattage of lighting in the dwelling units is counted
Section 9.5.2.1 Space-by-Space Method of Calculating Interior Lighting Power Allowance.
Section 9.5.2.1 - Revise Item “c” from Section 9.5.2.1 to read as follows:
c. Based on the space type selected for each space or subspace, determine the lighting power allowance of each space or subspace by multiplying the calculated area of the space or subspace by the appropriate LPD allowance determined in Section 9.6.1(a). For space types not listed, selection of a reasonable equivalent category shall be permitted. Where a building has unfinished spaces, the lighting power allowance for the unfinished spaces shall be the total connected lighting power for those spaces, or 0.2 watts per square foot, whichever is less.
Table 9.5.2.1-1 Space-by-Space Lighting Power Density Allowances and Minimum Control Requirements Using Either Method.
Table 9.5.2.1-1 - Revise Table 9.5.2.1-1 to read as follows:
|
Table 9.5.2.1-1 Space-by-Space Lighting Power Density Allowances and Minimum Control Requirements Using Either MethodInformative Note: This table is divided into two sections; this first section covers space types that can be commonly found in multiple building types. The second part of this table covers space types that are typically found in a single building type. |
The control functions below shall be implemented in accordance with the descriptions found in the referenced paragraphs within Section 9.4.1.1. For each space type: (1) All REQs shall be implemented. (2) At least one ADD1 (when present) shall be implemented. (3) At least one ADD2 (when present) shall be implemented. |
|
|
Local Control |
Manual ON |
Partial ON |
Multilevel Lighting Control |
Daylight Response Sidelighting |
Daylight Response Toplighting |
Auto Reduction |
Auto Full OFF |
Scheduled Shutoff |
|
Common Space Types1 |
LPD Allowances, W/ft2 |
RCR Threshold |
9.4.1.1[a] |
9.4.1.1[b] |
9.4.1.1[c] |
9.4.1.1[d] |
9.4.1.1[e] |
9.4.1.1[f] |
9.4.1.1[g] |
9.4.1.1[h]) |
9.4.1.1[i]) |
|
Atrium |
|
<20 ft in height |
0.32 |
NA |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
≥20 ft and ≤40 ft in height |
0.41 |
NA |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
>40 ft in height |
0.51 |
NA 11 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Audience Seating Area |
|
Auditorium |
0.57 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Gymnasium |
0.23 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Motion picture theater |
0.27 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Performing arts theater |
1.10 |
8 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Sports arena |
0.27 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
All other audience seating areas |
0.23 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Banking Activity Area |
0.56 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Classroom/Lecture Hall/Training Room |
|
|
Shop classroom |
1.17 |
6 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
|
REQ |
|
All other classrooms/lecture halls/training rooms |
0.72 |
4 |
REQ |
REQ |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Computer Room |
0.75 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Conference/Meeting/Multipurpose Rooms |
0.88 |
6 |
REQ |
REQ ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Control/(Editing Room or Booth) |
0.73 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Copy/Print Room |
0.5 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Corridor |
0.44 |
width 8 ft |
REQ |
|
|
|
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
Courtroom |
1.06 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Dining Areas |
|
|
|
|
|
|
|
|
|
|
|
|
|
Bar/lounge or leisure dining |
0.62 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Cafeteria or fast-food dining |
0.36 |
|
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Family dining |
0.52 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
All other dining areas |
0.42 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Electrical/Mechanical Room7 |
0.39 |
6 |
REQ |
|
|
|
REQ |
REQ |
|
|
|
|
Emergency Vehicle Garage |
0.41 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Equipment Room |
0.73 |
|
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
|
|
Food Preparation Area |
0.92 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Guest Room |
0.41 |
6 |
See Section 9.4.1.3(b). |
|
Laboratory |
|
|
|
|
|
|
|
|
|
|
|
|
|
In or as a classroom |
1.04 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
All other laboratories |
1.21 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Laundry/Washing Area |
0.43 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 REQ |
ADD2 |
|
Loading Dock, Interior |
0.51 |
6 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Lobby |
|
|
|
|
|
|
|
|
|
|
|
|
|
Elevator |
0.52 |
6 |
REQ |
|
|
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Hotel |
0.48 |
4 |
REQ |
|
|
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Motion picture theater |
0.20 |
4 |
REQ |
|
|
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Performing arts theater |
0.82 |
6 |
REQ |
|
|
|
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
All other lobbies |
0.80 |
4 |
REQ |
|
|
|
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
Locker Room |
0.43 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Lounge/Breakroom9, 10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Mother's/wellness room |
0.68 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
|
|
|
REQ |
|
|
All other lounges/breakrooms |
0.44 |
4 |
REQ |
REQ ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Office |
|
|
|
|
|
|
|
|
|
|
|
|
|
Office≤150 ft2 |
0.73 |
8 |
REQ |
ADD1 |
ADD1 |
REQ |
|
|
|
REQ |
|
|
Office >150 and ≤300 ft2 |
0.66 |
8 |
REQ |
ADD1 |
ADD1 |
REQ |
|
|
|
REQ |
|
|
Offices >300 ft2 |
0.56 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
REQ |
REQ |
|
|
Parking Garage |
|
|
|
|
|
|
|
|
|
|
|
|
|
Daylight transition ]one |
1.06 |
4 |
|
|
|
See Section 9.4.1.2. |
|
|
|
|
|
|
All other parking and drive areas |
0.11 |
4 |
|
|
|
See Section 9.4.1.2. |
|
|
|
|
|
|
Pharmacy Area |
1.23 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Restrooms |
0.74 |
8 |
|
ADD1 |
ADD1 |
|
REQ |
REQ |
|
REQ |
|
|
Sales Area4 (For accent lighting, see Section 9.5.2.2[b].) |
0.85 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
|
REQ |
|
ADD2 |
ADD2 |
|
Seating Area, General |
0.21 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Security Screening |
|
|
|
|
|
|
|
|
|
|
|
|
|
Airport bus ship train transportation screening |
0.93 |
6 |
REQ |
|
|
|
REQ |
REQ |
|
ADD2 |
|
|
Airport bus ship train transportation screening queue |
0.56 |
6 |
REQ |
|
|
|
REQ |
REQ |
|
ADD2 |
|
|
General security screening |
0.64 |
6 |
REQ |
|
|
|
REQ |
REQ |
|
ADD2 |
|
|
Stairway The space containing the stairway shall determine the LPD and control requirements for the stairway. |
|
|
|
|
|
|
|
|
|
|
|
|
Stairwell |
0.47 |
10 |
|
|
|
REQ |
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
Storage Room |
|
|
|
|
|
|
|
|
|
|
|
|
|
< 50 ft2 |
0.43 |
9 |
REQ |
REQ |
|
|
|
|
|
ADD2 |
ADD2 |
|
≥ 50 ft2 |
0.35 |
6 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
REQ |
|
|
Vehicular Maintenance Area |
0.53 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Workshop (including workshop classrooms) |
1.09 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
a. Where both a common space type and a building-specific space type are listed, the building specific space type shall apply (see Table 9.5.2.1-2 for building-specific space types).
b. Automatic daylight responsive controls are mandatory only if the space meets the requirements of the specified sections.
Table 9.5.2.1-2 Space-by-Space Lighting Power Density Allowances and Minimum Control Requirements Using Either Method.
Table 9.5.2.1-2 - Revise Table 9.5.2.1-2 to read as follows:
Table 9.5.2.1-2 Space-by-Space Lighting Power Density Allowances and Minimum Control Requirements Using Either Method
|
Informative Note: This table covers building-specific space types typically foundin a single building type. Table 9.5.2.1-1 covers common space types typicallyfound in multiple building types. |
The control functions below shall be implemented in accordance with the descriptions found within Section 9.4.1.1. For each space type: (1) All REQs shall be implemented. (2) At least one ADD1 (when present) shall be implemented. (3) At least one ADD2 (when present) shall be implemented. |
|
|
|
|
Local Control |
Manual ON |
Partial Auto ON |
Bilevel Multilevel Lighting Control |
Daylight Response Sidelighting |
Daylight Response Toplighting |
Auto Reduction |
Auto Full OFF |
Scheduled Shutoff |
|
Building-Specific Space Typesa |
LPD Allowances, W/ft2 |
RCR Threshold |
9.4.1.1[a] |
9.4.1.1[b] |
9.4.1.1[c] |
9.4.1.1[d] |
9.4.1.1[e] |
9.4.1.1[f] |
9.4.1.1[g] |
9.4.1.1[h]) |
9.4.1.1[i]) |
|
Casino-Gaming Area |
|
|
|
|
|
|
|
|
|
|
|
|
Betting/sportsbook/keno/bingo area |
0.82 |
5 |
|
|
|
REQ |
|
|
|
ADD2 |
ADD2 |
|
High-limit game area |
1.68 |
4 |
|
|
|
REQ |
|
|
|
ADD2 |
ADD2 |
|
Slot machine/digital gaming area |
0.54 |
5 |
|
|
|
REQ |
|
|
|
ADD2 |
ADD2 |
|
Table games area |
1.09 |
5 |
|
|
|
REQ |
|
|
|
ADD2 |
ADD2 |
|
Convention Center-Exhibit Space |
0.5 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
|
REQ |
|
Correctional Facilities |
|
|
|
|
|
|
|
|
|
|
|
|
Audience seating area |
0.56 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Classroom/lecture hall/training room |
0.74 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
|
|
|
Confinement cells |
0.6 |
6 |
REQ |
|
|
|
|
|
|
|
REQ |
|
Dining area |
0.35 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Dormitory-Living Quarters |
0.46 |
8 |
REQ |
|
|
|
|
|
|
|
|
|
Facility for the Visually Impaired3 (A facility for the visually impaired is a facility that can be documented as being designed to comply with the light levels in ANS,/,ES R3-28 and that is or will be licensed by local/state authorities for senior long-term care, adult daycare, senior support, and/or people with special visual needs.) |
|
|
|
|
|
|
|
|
|
|
|
|
Chapel (used primarily by residents) |
0.58 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Corridor (used primarily by residents) |
0.71 |
width 8 ft |
REQ |
|
|
|
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
Dining (used primarily by residents) |
1.22 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Lobby |
1.44 |
4 |
REQ |
|
|
|
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
Recreation room/common living room (used primarily by residents) |
1.2 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Restroom (used primarily by residents) |
0.96 |
8 |
|
|
|
|
REQ |
REQ |
|
REQ |
|
|
Fire Station-Sleeping Quarters |
0.19 |
6 |
REQ |
|
|
|
|
|
|
|
|
|
Gymnasium/Fitness Center |
|
|
|
|
|
|
|
|
|
|
|
|
Exercise area |
0.50 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Playing area |
0.75 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Healthcare Facility |
|
|
|
|
|
|
|
|
|
|
|
|
Control room (MRT/CT/radiology/PET) |
0.78 |
8 |
REQ |
REQ |
|
REQ |
|
|
|
REQ |
|
|
Exam/treatment room |
1.16 |
8 |
REQ |
|
|
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Hospital corridor |
0.61 |
width 8 ft |
REQ |
|
|
|
REQ |
REQ |
ADD2 |
ADD2 |
ADD2 |
|
Imaging room |
0.94 |
6 |
REQ |
|
|
REQ |
|
|
|
ADD2 |
ADD2 |
|
Lounge |
0.77 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Medical supply room |
0.54 |
6 |
REQ |
ADD1 |
ADD1 |
|
|
|
|
REQ |
|
|
Nursery |
0.87 |
6 |
REQ |
|
|
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Nurse’s station |
0.75 |
6 |
REQ |
|
|
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Operating room |
1.87 |
6 |
REQ |
|
|
REQ |
|
|
|
|
|
|
Patient room |
0.45 |
6 |
REQ |
|
|
REQ |
|
|
|
|
|
|
Physical therapy room |
0.82 |
6 |
REQ |
|
|
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Recovery room |
0.89 |
6 |
REQ |
|
|
REQ |
|
|
|
ADD2 |
ADD2 |
|
Telemedicine |
1.44 |
8 |
|
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Library |
|
|
|
|
|
|
|
|
|
|
|
|
Reading area |
0.77 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Stacks |
1.18 |
4 |
REQ |
ADD1 |
ADD1 |
|
|
|
REQ |
ADD2 |
ADD2 |
|
Manufacturing Facility |
|
|
|
|
|
|
|
|
|
|
|
|
Detailed manufacturing area |
0.75 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Extra-high bay area (>50 ft floor-to-ceiling height) |
0.73 |
8 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
High bay area (25 to 50 ft floor-to-ceiling height) |
0.58 |
6 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Low bay area ( 25 ft floor-to-ceiling height) |
0. 5 |
3 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Museum |
|
|
|
|
|
|
|
|
|
|
|
|
General exhibition area |
0.31 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Restoration room |
0.77 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Performing Arts Theater-Dressing Room |
0.35 |
6 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
REQ |
|
|
Post Office-Sorting Area |
0. 1 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
REQ |
ADD2 |
ADD2 |
|
Religious Facility |
|
|
|
|
|
|
|
|
|
|
|
|
Audience seating area |
0. 2 |
4 |
REQ |
|
|
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Fellowship hall |
0.5 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Worship/pulpit/choir area |
0. 5 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
REQ |
REQ |
|
ADD2 |
ADD2 |
|
Retail Facilities |
|
|
|
|
|
|
|
|
|
|
|
|
Dressing/fitting room |
0.45 |
|
REQ |
ADD1 |
ADD1 |
REQ |
|
REQ |
|
REQ |
ADD2 |
|
Hair care |
0.65 |
6 |
REQ |
ADD1 |
|
|
|
|
|
ADD2 |
ADD2 |
|
Mall concourse |
0.5 |
4 |
REQ |
ADD1 |
ADD1 |
REQ |
|
REQ |
|
ADD2 |
ADD2 |
|
Massage |
0. 1 |
|
REQ |
ADD1 |
ADD1 |
REQ |
|
|
|
ADD2 |
ADD2 |
|
Nail care |
0. 5 |
6 |
REQ |
ADD1 |
ADD1 |
|
|
|
|
ADD2 |
ADD2 |
|
Sports Arena-Playing Area8 (Class of play as defined by ANSI/IES RP-6) |
|
|
|
|
|
|
|
|
|
|
|
|
Class I facility |
2.26 |
4 |
REQ |
REQ |
|
|
REQ |
REQ |
|
|
REQ |
|
Class II facility |
1.45 |
4 |
REQ |
REQ |
|
|
REQ |
REQ |
|
|
REQ |
|
Class III facility |
1.08 |
4 |
REQ |
REQ |
|
|
REQ |
REQ |
|
|
REQ |
|
Class IV facility |
0. 5 |
4 |
REQ |
ADD1 |
ADD1 |
|
REQ |
REQ |
|
ADD2 |
ADD2 |
a. Where both a common space type and a building-specific space type are listed, the building specific space type shall apply (see Table 9.5.2.1-1 for common space types).
b. Automatic daylight responsive controls are mandatory only if the space meets the requirements of the specified sections.
Section 9.9.1 Verification and Testing.
Section 9.9.1- Revise Item “b” from Section 9.9.1to read as follows:
b. Automatic Time Switches
1. Confirm that the automatic time-switch control is programmed with accurate weekday, weekend, and holiday (as applicable) schedules.
2. Document for the owner automatic time-switch control programming, including weekday, weekend, and holiday schedules, as well as all setup and preference program settings.
3. Verify that correct time and date are properly set in the time switch.
4. Verify that any battery backup (as applicable) is installed and energized.
5. Verify that the override time limit is set to no more than two (2) hours.
6. Simulate occupied condition. Verify and document the following:
1. All lights can be turned on and off by their respective area control switch.
2. The switch only operates lighting in the enclosed space in which the switch is located.
7. Simulate unoccupied condition. Verify and document the following:
i All nonexempt lighting turns off.
ii Manual override switch allows only the lights in the enclosed space where the override switch is located to turn on or remain on until the next scheduled shut off occurs.
8. Additional testing as specified by the registered design professional.
Section 9.9.1.1 Documentation Requirements.
Section 9.9.1.1 - Add new Section 9.9.1.1 to read as follows:
9.9.1.1 Documentation Requirements
The construction documents shall specify that the documents described in this section be provided to the building owner or owner’s authorized agent within 90 days of the date of receipt of the certificate of occupancy.
Section 9.9.1.1.1 Drawings.
Section 9.9.1.1.1 - Add new Section 9.9.1.1.1 to read as follows:
9.9.1.1.1 Drawings
Construction documents shall include the location and catalogue number of each piece of equipment.
Section 9.9.1.1.2 Manuals.
Section 9.9.1.1.2 - Add new Section 9.9.1.1.2 to read as follows:
9.9.1.1.2 Manuals
An operating and maintenance manual shall be provided and include the following:
a. Name and address of not less than one service agency for installed equipment.
b. A narrative of how each system is intended to operate, including recommended setpoints.
c. Submittal data indicating all selected options for each piece of lighting equipment and lighting controls.
d. Operation and maintenance manuals for each piece of lighting equipment. Required routine maintenance actions, cleaning and recommended relamping shall be clearly identified.
e. A schedule for inspecting and recalibrating all lighting controls.
Section 9.9.1.1.3 Report.
Section 9.9.1.1.3 - Add new Section 9.9.1.1.3 to read as follows:
9.9.1.1.3 Report
A report of test results shall be provided and include the following:
a. Results of functional performance tests.
b. Disposition of deficiencies found during testing, including details of corrective measures used or proposed.
Section 10- Other Equipment.
Section 10.1.3.1 Electric Vehicle Charging Infrastructure.
Section 10.1.3.1 - Add new Section 10.1.3.1 to read as follows:
10.1.3.1 Electric Vehicle Charging Infrastructure.
Where the addition includes a private garage, carport, or a public parking garage, electric vehicle charging infrastructure shall be provided in accordance with Section 10.4.10.
Section 10.4.4.1.1 Regenerative Drive.
Section 10.4.4.1.1 - Add new Section 10.4.4.1.1 to read as follows:
10.4.4.1.1 Regenerative Drive
An escalator designed either for one-way down operation only or for reversible operation shall have a variable frequency regenerative drive that supplies electrical energy to the building electrical system when the escalator is loaded with passengers whose combined weight exceeds 750 pounds.
Section 10.4.7.2 Recording and Reporting.
Section 10.4.7.2- Revise the exceptions to Section 10.4.7.2 to read as follows:
Exceptions to 10.4.7.1 and 10.4.7.2
1. Buildings or additions less than 10,000 ft2.
2. Individual tenant spaces less than 5,000 ft2.
3. Dwelling units.
4. Residential buildings with less than 10,000 ft2 of common area.
5. Fuel used for on-site emergency equipment.
Section 10.4.9 Electrical Energy Storage System.
Section 10.4.9 - Add new Section 10.4.9 to read as follows:
10.4.9 Electrical Energy Storage System.
New buildings with an on-site photovoltaic system shall comply with Section 10.4.8.1 or Section 10.4.8.2 and with the New York City Fire Code.
10.4.9.1 Electrical Energy Storage Energy Capacity.
Each building shall have no fewer than one energy storage system (ESS) with a total rated energy capacity and rated power capacity as follows:
1. ESS rated energy capacity (kWh)≥1.0 x Installed On-site Renewable Electric Energy System Rated Power (kWDC)
2. ESS rated power capacity (kW)≥0.25 x Installed On-site Renewable Electric Energy System Rated Power (kWDC).
Where installed, DC coupled battery systems shall meet the requirements for rated energy capacity alone.
Energy Storage System Ready.
Each building shall have one or more reserved ESS-ready areas to accommodate future electrical storage in accordance with Sections 10.4.9.2.1 through 10.4.9.2.4.
10.4.9.2.1 ESS-ready Location.
Each ESS-ready area shall be located in accordance with Section 608 of the Fire Code of New York City.
10.4.9.2.2 ESS-ready Minimum Area Requirements.
Each ESS-ready area shall be sized in accordance with the spacing requirements of Section 608 of the Fire Code of New York City. and the UL9540 or UL9540A designated rating of the planned system. Where rated to UL9540A, the area shall be sized in accordance with the manufacturer’s instructions.
10.4.9.2.3 Electrical Distribution Equipment.
The onsite electrical distribution equipment shall have sufficient capacity, rating, and space to allow installation of overcurrent devices and circuit wiring in accordance with The New York City Electrical Code for future electrical ESS installation complying with the capacity criteria of Section 10.4.9.2.4
10.4.9.2.4 ESS-ready Minimum System Capacity.
Compliance with ESS-ready requirements in Sections 10.4.8.2.1 through 10.4.8.2.3 shall be based on a minimum total energy capacity and minimum rated power capacity as follows:
1. ESS rated energy capacity (kWh) ≥ gross conditioned floor area of the three largest floors (ft2) x 0.0008 kWh/ft2.
2. ESS rated power capacity (kWh) ≥ gross conditioned floor area of the three largest floors (ft2) x 0.0002 kWh/ft2.
Section 10.4.10 Electric Vehicle Power Transfer Infrastructure.
Section 10.4.10 - Add new Section 10.4.10 to read as follows:
10.4.10 Electric Vehicle Power Transfer Infrastructure.
Electric vehicle power transfer infrastructure shall be provided in accordance with Sections 10.4.10.1 through 10.4.10.8.
10.4.10.1 Quantity.
The amount of Electric Vehicle Service Equipment must comply with any state and local law, rule or regulation relating to such matter.
10.4.10.2 EV Ready Spaces.
Each branch circuit serving EV ready spaces used to meet the requirements of Section 10.4.10.1 shall comply with all of the following:
1. A minimum of 4.8 kVA (208/240 volt, 20-ampere) capacity wiring for R-2 occupancies and 8.3 kVA (208/240 volt, 40-ampere) capacity wiring for all other occupancies.
2. Terminate at a receptacle located within 3 feet (914 mm) of each EV ready space it serves.
3. Have a minimum electrical distribution system capacity in accordance with Section 10.4.10.5.
4. The electrical distribution equipment directory shall designate the branch circuit as “Electric Vehicle Outlet”.
5.The outlet shall be marked “Electric Vehicle Outlet”.
10.4.10.3 EVSE Spaces.
An installed EVSE with multiple output connections shall be
permitted to serve multiple EVSE spaces. Each EVSE installed to meet the requirements of Section 10.4.10.1, serving either a single EVSE space or multiple EVSE spaces, shall comply with all of the following:
1. Have a minimum system and circuit capacity in accordance with Section 10.4.10.5.
2. Have a nameplate rating not less than 6.2kW.
3. Be located within 3 feet (914 mm) of each EVSE space it serves.
4. Be installed in accordance with Section 10.4.10.6.
10.4.10.4 EV DCFC Spaces.
Each branch circuit serving EV DCFS spaces used to meet the requirements of Section 10.4.10.1 shall comply with all of the following:
1. A minimum of 48 kVA (480 volt, 100-ampere) capacity wiring.
2. EVSE located within 3 feet (914 mm) of the parking space providing a minimum capacity of 80-ampere.
10.4.10.5 System and circuit capacity.
The system and circuit capacity shall comply with Section 10.4.10.5.1 and 10.4.10.5.2.
10.4.10.5.1 System capacity.
The electrical distribution equipment supplying the branch circuit(s) serving each EV ready space and EVSE space shall comply with one of the following:
1. Have a calculated load not less than 8.3 kVA or the nameplate rating of the equipment, whichever is larger, for each EV ready space and EVSE space.
2. Meets the requirements of Section 10.4.10.6.3.1
10.4.10.5.2 Circuit Capacity.
The branch circuit serving each EV ready space and EVSE space shall comply with one of the following:
1. Have a rated capacity not less than 40 amperes.
2. Meets the requirements of Section 10.4.10.6.3.2.
10.4.10.5.3 System and circuit capacity management.
Where system and circuit capacity management is selected in Section 10.4.10.5.1(2) or Section 104.9.5.2(2), the installation shall comply with Sections 10.4.10.5.3.1 and 10.4.10.5.3.2.
10.4.10.5.3.1 System capacity management.
The maximum equipment load on the electrical distribution equipment supplying the branch circuits(s) serving EV ready spaces and EVSE spaces controlled by an energy management system shall be the maximum load permitted by the energy management system, but not less than 3.3 kVA per space. Where the energy management system serves EV DCFC spaces, the power demand from the EV DCFC spaces shall be prioritized above EV-Ready spaces required by 10.4.10.1.
10.4.10.5.3.2 Circuit Capacity Management.
Each branch circuit serving multiple EVSE spaces or EV ready spaces controlled by an energy management system, shall have a minimum capacity of 20 amperes per space.
10.4.10.6 EVSE Installation.
EVSE shall be installed in accordance with NFPA 70 and shall be listed and labeled in accordance with UL 2202 or UL 2594 and meet the requirement of New York Codes Rules and Regulations Title 21 Chapter XI Section 509.12. EVSE shall be accessible in accordance with the Building Code of New York State Section 1107.
10.4.10.7 EV Charging Infrastructure for Medium-and-Heavy Duty Vehicles.
One EV capable space for medium-duty and heavy-duty vehicles shall be provided for grocery, manufacturing facilities, retail, office buildings, and warehouses with accessory off-street loading berths, in accordance with NFPA 70 and shall comply with all of the following:
1. A continuous raceway or cable assembly shall be installed between an enclosure or outlet located within 10 feet (3048 mm) of the EV capable space and electrical distribution equipment.
2. The raceway shall be designed to provide no less than 200 kVA of power.
3. The electrical distribution equipment to which the raceway or cable assembly connects shall have sufficient dedicated overcurrent protection device space and spare electrical capacity to supply a calculated load of no less than 200 kVA of power.
10.4.10.8 EV Signage.
Electric vehicle ready parking spaces and electric vehicle charging stations shall be identified by signage denoting the availability and location of such parking spaces.
Section 10.4.11 Commercial Kitchen Equipment.
Section 10.4.11 - Add new Section 10.4.11 to read as follows:
10.4.11 Commercial Kitchen Equipment
Commercial kitchen equipment shall comply with the minimum efficiency requirements of Tables 10.4.11-1 through 10.4.11-5.
Table 10.4.11-1 Minimum Efficiency Requirements: Commercial Fryers
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
|
Heavy-Load Cooking Energy Efficiency |
Idle Energy Rate |
Test Procedure |
|
Standard Open Deep-Fat Gas Fryers |
≥ 50% |
≤ 9,000 Btu/hr |
ASTM Standard F1361-17 |
|
Large Vat Open Deep-Fat Gas Fryers |
≥ 50% |
≤ 12,000 Btu/hr |
|
|
Standard Open Deep-Fat Electric Fryers |
≥ 83% |
≤ 800 watts |
ASTM Standard F2144-17 |
|
Large Vat Open Deep-Fat Electric Fryers |
≥ 80% |
≤ 1,100 watts |
|
Table 10.4.11-2 Minimum Efficiency Requirements: Commercial Hot Food Holding Cabinets
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
Product Interior Volume (Cubic Feet) |
Maximum Idle Energy Consumption Rate (Watts) |
Test Procedure |
|
0 < V < 13 |
≤ 21.5 V |
ASTM Standard F2140-11 |
|
13 ≤ V < 28 |
≤ 2.0 V + 254.0 |
|
|
28 ≤ V |
≤ 3.8 V + 203.5 |
|
Table 10.4.11-3 Minimum Efficiency Requirements: Commercial Steam Cookers
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
Fuel Type |
Pan Capacity |
Cooking Energy Efficiencya |
Idle Rate |
Test Procedure |
|
Electric Steam |
3-pan |
50% |
400 watts |
ASTM Standard F1484-18 |
|
|
4-pan 5-pan |
50% 50% |
530 watts 670 watts |
|
|
|
6-pan and larger |
50% |
800 watts |
|
|
Gas Steam |
3-pan |
38% |
6,250 Btu/h |
|
|
|
4-pan |
38% |
8,350 Btu/h |
|
|
|
5-pan |
38% |
10,400 Btu/h |
|
|
|
6-pan and larger |
38% |
12,500 Btu/h |
|
Table 10.4.11-4 Minimum Efficiency Requirements: Commercial Dishwashers
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
High Temperature Efficiency Requirements Machine Type |
Low Temperature Efficiency Requirements Test Procedure |
|
|
Idle Energy Ratea |
Water Consumptionb |
Idle Energy Ratea |
Water Consumptionb |
|
|
Under Counter |
≤ 0.50 kW |
≤ 0.86 GPR |
≤ 0.50 kW |
≤ 1.19 GPR |
|
|
Stationary Single Tank Door |
≤ 0.70 kW |
≤ 0.89 GPR |
≤ 0.60 kW |
≤ 1.18 GPR |
ASTM F1696-18 |
|
Pot, Pan , and Utensil |
≤ 1.20 kW |
≤ 0.58 GPSF |
≤ 1.00 kW |
≤ 0.58 GPSF |
|
|
Single Tank Conveyor |
≤ 1.50 kW |
≤ 0.70 GPR |
≤ 1.50 kW |
≤ 0.79 GPR |
ASTM F1920-15 |
|
Multiple Tank Conveyor |
≤ 2.25 kW |
≤ 0.54 GPR |
≤ 2.00 kW |
≤ 0.54 GPR |
|
|
Single Tank Flight Type |
Reported |
GPH ≤ 2.975x + 55.00 |
Reported |
GPH ≤ 2.975x + 55.00 |
|
|
Multiple Tank Flight Type |
Reported |
GPH ≤ 4.96x + 17.00 |
Reported |
GPH ≤ 4.96x + 17.00 |
|
a. Idle results shall be measured with the door closed and represent the total idle energy consumed by the machine including all tank heater(s) and controls. Booster heater (internal or external) energy consumption should not be part of this measurement unless it cannot be separately monitored per US EPA Energy Star Commercial Dishwasher Specification Version 2.0.
b. GPR = gallons per rack; GPSF = gallons per square foot of rack; GPH = gallons per hour; x = sf of conveyer belt (i.e., W*L/min (maximum conveyor speed).
Table 10.4.11-5 Minimum Efficiency Requirements: Commercial Ovens
(This table is intended to be a restatement of the legally binding provisions found in Title 10 CFR Part 431 included here as a convenience to the users of this code)
|
Fuel Type |
Classification |
Idle Rate |
Cooking-Energy Efficiency, % |
Test Procedure |
|
Convection Ovens |
|
Gas |
Full-Size |
≤ 12,000 Btu/h |
≥ 46 |
ASTM F1496 - 13 |
|
Electric |
Half-Size |
≤ 1.0 Btu/h |
≥ 71 |
|
|
|
Full-Size |
≤ 1.60 Btu/h |
|
|
|
Combination Ovens |
|
Gas |
Steam Mode |
≤ 200Pa + 6,511 Btu/h |
≥ 41 |
ASTM F2861 - 17 |
|
|
Convection Mode |
≤ 150Pa + 5,425 Btu/h |
≥ 56 |
|
|
Electric |
Steam Mode |
≤ 0.133Pa + 0.6400 kW |
≥ 55 |
|
|
|
Convection Mode |
≤ 0.080Pa + 0.4989 kW |
≥ 76 |
|
|
Rack Ovens |
|
Gas |
Single |
≤ 25,000 Btu/h |
≥ 48 |
ASTM F2093 - 18 |
|
|
Double |
≤ 30,000 Btu/h |
≥ 52 |
|
a. P = Pan Capacity: The number of steam table pans the combination oven is able to accommodate as per the ASTM F1495 - 05 standard specification.
Section 11- ADDITIONAL EFFICIENCY REQUIREMENTS.
Section 11- Delete Section 11 in its entirety and add new Section 11 to read as follows:
SECTION 11
ADDITIONAL EFFICIENCY REQUIREMENTS
11.1 Compliance
New buildings shall comply with the energy efficiency and load management requirements of Section 11.1.1 and core and shell buildings shall comply with Section 11.1.1.1. Substantial energy alterations shall comply with 15 percent of the energy efficiency credits required in the alteration area and the equipment serving it, for the building occupancy classification and climate zone. Semiheated spaces within buildings, and semiheated buildings, shall achieve 50 percent of the credits required in the semiheated area of the building, for the building occupancy classification and climate zone. Additions shall comply with 50 percent of the energy efficiency credits required for the addition area; those credits’ improvements shall be permitted to be applied to the addition, the existing building, or a combination of both. All buildings shall comply with Section 11.7 Submittals and Section 11.9 Verification, Testing, and Commissioning.
11.1.1 Energy credit requirements
Buildings shall comply with measures in Section 11.2 to achieve the minimum number of required energy efficiency credits and Section 11.3 to achieve the minimum number of required load management credits from Table 11.1.1 based on building occupancy classification and climate zone.
Where a building contains multiple occupancies, credits in Table 11.1.1 from each building occupancy classification shall be weighted by the gross floor area to determine the weighted average energy credits required.
Exceptions to 11.1.1
1. Buildings or portions of buildings that are unconditioned spaces.
2. Group F occupancies within buildings.
3.
Table 11.1.1 Energy Efficiency and Load Management Credit Requirements by Building Occupancy Group
|
BUILDING OCCUPANCY GROUP |
CLIMATE ZONE |
|
|
4A |
5A |
6A |
|
ENERGY EFFICIENCY CREDITS |
|
R-2, R-4, and I-1 |
90 |
106 |
107 |
|
I-2 |
45 |
45 |
51 |
|
R-1 |
71 |
79 |
88 |
|
B |
107 |
110 |
107 |
|
A-2 |
52 |
59 |
67 |
|
M |
59 |
70 |
70 |
|
E |
64 |
77 |
82 |
|
S-1 and S-2 |
70 |
62 |
58 |
|
All Other |
35 |
38 |
39 |
|
LOAD MANGEMENT CREDITS |
|
R-2, R-4, and I-1 |
14 |
6 |
13 |
|
I-2 |
14 |
13 |
14 |
|
R-1 |
32 |
28 |
25 |
|
B |
32 |
29 |
30 |
|
A-2 |
1 |
1 |
1 |
|
M |
19 |
21 |
28 |
|
E |
19 |
18 |
24 |
|
S-1 and S-2 |
67 |
54 |
70 |
|
All Other |
22 |
21 |
23 |
11.1.1.1 Building Core/Shell and Initial Build-Out Construction
Where separate permits are used for building core/shell and initial build-out construction, compliance shall be in accordance with the following requirements:
1. Core and shell buildings or portions of buildings shall comply with one of the following:
a) Where the permit includes a central HVAC system or service water heating system with chillers, heat pumps, boilers, service water heating equipment, or loop pumping systems with heat rejection, the project shall achieve not less than 50 percent of the credits required in Table 11.1.1 in accordance with Section 11.2 and Section 11.3.
b) Where the permit does not include a central HVAC system or service water heating system with chillers, heat pumps, boilers, service water heating equipment, or loop pumping systems with heat rejection, the project shall achieve not less than 33 percent of the credits required in Table 11.1.1 in accordance with Section 11.2 and Section 11.3.
2. For core and shell buildings or portions of buildings the credits achieved shall be subject to the following adjustments, as applicable:
a) Lighting measure credits shall be determined only for areas with final lighting installed.
b) Where HVAC or service water heating systems are designed to serve the entire building, full HVAC or service water heating measure credits shall be achieved.
c) Where HVAC or service water heating systems are designed to serve individual areas, HVAC or service water heating measure credits achieved shall be reduced in proportion to the gross floor area with final HVAC systems or service water heating systems installed.
3. Build-out construction shall be deemed to comply with Section 11.1 where either:
a) Where heating and cooling generation are provided by a previously installed central system, the credits achieved in accordance with Section 11.2 and Section 11.3 under the build-out project are not less than 33 percent of the credits required in Table 11.1.1.
b) Where heating and cooling generation are provided by an HVAC system installed in the build out, the credits achieved in accordance with Section 11.2 and Section 11.3 under the build-out project are not less than 50 percent of the credits required in Table 11.1.1.
11.1.2 Base and Measure Energy Credits
Credits are available for the measures listed in Section 11.2 and Section 11.3. Base energy credits (BEC) for each efficiency measure are shown in Tables 11.1.3(1) through 11.1.3(9) and BECs for each load management measure are shown in Tables 11.3(1) through 11.3(9) based on building occupancies and climate zones. Base energy credits shall be modified, where applicable, to achieve measure energy credits (MEC) for the measure. Measure energy credits achieved shall be determined by one of the following, as applicable:
1. The measure energy credit shall be the base energy credit for the measure where no adjustment factor or formula is shown in the measure description in Section 11.2 and Section 11.3.
2. The measure energy credit shall be the base energy credit for the measure adjusted by a factor or formula as stated in the measure description in Section 11.2 and Section 11.3. Where adjustments are applied, each measure energy credit shall be rounded to the nearest whole number.
3. The measure energy credit shall be by direct formula as stated in the measure description in Section 11.2 and Section 11.3, where each individual measure credit shall be rounded to the nearest whole number.
The sum of measure energy credits for individual measures included in the building shall count towards the total energy credits for the building.
Table 11.1.3(1) Base Energy Efficiency Credits for Group R-2, R-4, and I-1 Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
11.2.2.1 |
37 |
50 |
54 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
5 |
9 |
13 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.3 |
1 |
1 |
X |
|
H04 |
Residential HVAC control |
11.2.2.4 |
19 |
21 |
19 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
38 |
50 |
66 |
|
H06 |
Cold-climate heat pumps |
11.2.2.6 |
10 |
12 |
14 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
120 |
98 |
100 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
58 |
48 |
49 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
9 |
7 |
7 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
4 |
3 |
3 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
16 |
12 |
12 |
|
W08 |
Water heating system submeters |
11.2.3.4 |
22 |
18 |
18 |
|
W09 |
Water heating distribution sizing |
11.2.3.5 |
87 |
71 |
73 |
|
W10 |
Shower drain heat recovery |
11.2.3.6 |
31 |
26 |
27 |
|
P01 |
Energy monitoring |
11.2.4 |
3 |
3 |
3 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
1 |
1 |
1 |
|
L05 |
Residential light control |
11.2.5.5 |
8 |
5 |
4 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
1 |
1 |
1 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
6 |
5 |
4 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
3 |
2 |
3 |
Table 11.1.3(2) Base Energy Efficiency Credits for Group I-2 Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Envelope Performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.1 |
6 |
7 |
10 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.2 |
1 |
1 |
1 |
|
H04 |
Residential HVAC control |
11.2.2.3 |
12 |
13 |
12 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.4 |
44 |
50 |
59 |
|
W01 |
Recovered or renewable water heating |
11.2.2.6 |
5 |
5 |
5 |
|
W02 |
Heat pump water heater |
11.2.3.1(1) |
3 |
3 |
3 |
|
W04 |
Water heating pipe insulation |
11.2.3.1(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.2 |
1 |
1 |
1 |
|
W10 |
Shower drain heat recovery |
11.2.3.3(2) |
1 |
1 |
1 |
|
P01 |
Energy monitoring |
11.2.3.3(3) |
3 |
3 |
3 |
|
L02 |
Enhanced digital lighting controls |
11.2.3.4 |
5 |
4 |
4 |
|
L05 |
Residential light control |
11.2.3.5 |
9 |
8 |
7 |
|
L06 |
Reduced lighting power reduction |
11.2.3.6 |
6 |
6 |
5 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.4 |
2 |
1 |
1 |
|
Q03 |
Fault detection and diagnostics system |
11.2.5.2 |
3 |
3 |
3 |
Table 11.1.3(3) Base Energy Efficiency Credits for Group R-1 Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
11.2.2.1 |
66 |
75 |
84 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
3 |
5 |
8 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.3 |
1 |
1 |
x |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
23 |
27 |
37 |
|
H06 |
Cold-climate heat pumps |
11.2.2.6 |
9 |
10 |
11 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
30 |
26 |
28 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
25 |
22 |
24 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
4 |
3 |
3 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
6 |
5 |
5 |
|
W09 |
Water heating distribution sizing |
11.2.3.5 |
22 |
19 |
21 |
|
W10 |
Shower drain heat recovery |
11.2.3.6 |
8 |
7 |
7 |
|
P01 |
Energy monitoring |
11.2.4 |
2 |
2 |
2 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
1 |
1 |
1 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
1 |
1 |
1 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
3 |
2 |
2 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
2 |
1 |
2 |
Table 11.1.3(4) Base Energy Efficiency Credits for Group B Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
11.2.2.1 |
54 |
60 |
59 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
3 |
5 |
8 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.3 |
1 |
1 |
1 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
31 |
42 |
57 |
|
H06 |
Cold-climate heat pumps |
11.2.2.6 |
15 |
21 |
26 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
16 |
16 |
16 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
6 |
7 |
7 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
5 |
5 |
5 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
24 |
24 |
24 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
6 |
6 |
6 |
|
P01 |
Energy monitoring |
11.2.4 |
3 |
3 |
4 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
6 |
5 |
5 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
8 |
7 |
6 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
5 |
5 |
5 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
2 |
3 |
3 |
Table 11.1.3(5) Base Energy Efficiency Credits for Group A-2 Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
10 |
15 |
19 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.3 |
1 |
1 |
x |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
51 |
67 |
84 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
39 |
37 |
37 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
27 |
26 |
26 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
3 |
2 |
2 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
4 |
3 |
3 |
|
P01 |
Energy monitoring |
11.2.4 |
2 |
2 |
3 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
2 |
1 |
1 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
2 |
2 |
2 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
1 |
0 |
0 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
2 |
3 |
3 |
Table 11.1.3(6) Base Energy Efficiency Credits for Group M Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
11.2.2.1 |
45 |
63 |
65 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
17 |
23 |
27 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.3 |
1 |
1 |
X |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
88 |
108 |
120 |
|
H06 |
Cold-climate heat pumps |
11.2.2.6 |
15 |
21 |
25 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
20 |
18 |
17 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
5 |
5 |
5 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
5 |
5 |
5 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
5 |
3 |
3 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
6 |
6 |
6 |
|
P01 |
Energy monitoring |
11.2.4 |
6 |
6 |
7 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
3 |
1 |
0 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
5 |
3 |
2 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
4 |
4 |
3 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
5 |
5 |
6 |
Table 11.1.3(7) Base Energy Efficiency Credits for Group E Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.2.1 |
Determined in accordance with Section 11.2.1 |
|
H01 |
HVAC Total System Performance Ratio (TSPR) |
11.2.2.2 |
38 |
53 |
60 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.3 |
4 |
8 |
14 |
|
H03 |
Efficient space cooling equipment and fan performance |
|
1 |
1 |
X |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
38 |
51 |
71 |
|
H06 |
Cold-climate heat pumps |
11.2.2.6 |
14 |
15 |
16 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
13 |
15 |
15 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
9 |
10 |
11 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
1 |
1 |
1 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
5 |
5 |
5 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
1 |
1 |
1 |
|
W10 |
Shower drain heat recovery |
11.2.3.6 |
3 |
3 |
3 |
|
P01 |
Energy monitoring |
11.2.4 |
3 |
3 |
4 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
5 |
5 |
4 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
7 |
6 |
6 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
5 |
5 |
5 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
3 |
3 |
4 |
Table 11.1.3(8) Base Energy Efficiency Credits for Group S-1 and S-2 Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope Performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
30 |
36 |
39 |
|
H03 |
Efficient space cooling equipment and fan performance |
11.2.2.3 |
1 |
1 |
X |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
127 |
151 |
162 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
5 |
4 |
3 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
1 |
1 |
1 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
2 |
1 |
1 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
26 |
19 |
16 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
2 |
2 |
2 |
|
P01 |
Energy monitoring |
11.2.4 |
9 |
9 |
11 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
9 |
6 |
6 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
12 |
8 |
8 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
15 |
11 |
9 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
8 |
9 |
12 |
Table 11.1.3(9) Base Energy Efficiency Credits for Other Occupancies
|
Credit ID |
ENERGY CREDIT TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
E01 |
Improved envelope performance |
11.2.1 |
Determined in accordance with Section 11.2.1 |
|
H02 |
Efficient space heating equipment performance |
11.2.2.2 |
10 |
13 |
17 |
|
H04 |
Residential HVAC control |
11.2.2.4 |
20 |
23 |
21 |
|
H05 |
Dedicated Outdoor Air System (DOAS) |
11.2.2.5 |
55 |
68 |
82 |
|
H06 |
Cold-climate heat pumps |
11.2.2.6 |
6 |
8 |
9 |
|
W01 |
Recovered or renewable water heating |
11.2.3.1(1) |
31 |
27 |
28 |
|
W02 |
Heat pump water heater |
11.2.3.1(2) |
22 |
20 |
20 |
|
W04 |
Water heating pipe insulation |
11.2.3.2 |
4 |
3 |
3 |
|
W05 |
Point of use water heaters |
11.2.3.3(1) |
15 |
15 |
15 |
|
W06 |
Thermostatic balance valves |
11.2.3.3(2) |
1 |
1 |
1 |
|
W07 |
Heat trace system |
11.2.3.3(3) |
5 |
5 |
5 |
|
W08 |
Water heating system submeters |
11.2.3.4 |
22 |
18 |
18 |
|
W09 |
Water heating distribution sizing |
11.2.3.5 |
55 |
45 |
47 |
|
W10 |
Shower drain heat recovery |
11.2.3.6 |
3 |
3 |
3 |
|
P01 |
Energy monitoring |
11.2.4 |
4 |
4 |
5 |
|
L02 |
Enhanced digital lighting controls |
11.2.5.2 |
4 |
3 |
3 |
|
L05 |
Residential light control |
11.2.5.5 |
6 |
4 |
4 |
|
L06 |
Reduced lighting power reduction |
11.2.5.6 |
5 |
4 |
4 |
|
Q01 |
Efficient elevator and escalator equipment |
11.2.7.1 |
5 |
4 |
4 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
4 |
4 |
5 |
11.2 Additional Energy Efficiency Credit Measures
Each energy efficiency credit measure used to meet credit requirements for the building shall include efficiency that is greater than the energy efficiency required for the building type and configuration requirements in Sections 5 through 10. Measures installed in the building that meet the requirements in Sections 11.2.1 through 11.2.7 shall achieve the credits listed for the measure and occupancy classification in Tables 11.1.3(1) through 11.1.3(9) or where calculations required by Sections 11.2.1 through 11.2.7 create or modify the table credits, the credits achieved shall be based upon the section calculations.
11.2.1E01: Improved Envelope Performance 90.1 Appendix C.
To achieve this credit, building envelope measures shall be installed to improve the energy performance of the project. The allowable energy credits shall be determined: in accordance with Equation 11.2.1:
E01 MEC = 1000 × (EPFB - EPFP)/EPFB (Equation 11.2.1)
Where
EPFB = base envelope performance factor calculated in accordance with Normative Appendix C
EPFP= proposed envelope performance factor calculated in accordance with Normative Appendix C
11.2.2. More Efficient HVAC Performance
HVAC systems are permitted to achieve energy credits by meeting the requirements of 11.2.2.1 (H01); or any combination of 11.2.2.2 (H02) through 11.2.2.6 (H06). Systems documenting compliance with H01 are not eligible for energy credits from HVAC measures H02, H03, H04, H05, and H06. However, buildings are eligible to combine either H01 or H06 with H02 measure energy credits when systems and building areas claiming H01 or H06 credit are separate from the systems and building areas claiming H02 credit.
Heating and cooling systems shall meet the minimum requirements of Section 6 and efficiency improvements shall be referenced to minimum efficiencies listed in Tables referenced by Section 6.4.1. Where multiple efficiency requirements are listed, equipment shall meet the seasonal- or part-load efficiencies including seasonal energy efficiency ratio (SEER) and SEER2, EER/integrated energy efficiency ratio (IEER), integrated part load value (IPLV), or annual fuel utilization efficiency (AFUE). Equipment that is larger than the maximum capacity range indicated in Tables referenced by Section 6.4.1 shall utilize the values listed for the largest capacity equipment for the associated equipment type shown in the table. Where multiple individual heating or cooling systems serve the building, the improvement shall be the weighted average improvement based on individual system rated capacity.
11.2.2.1 H01 HVAC Total System Performance (TSPR)
a. If all HVAC systems in the scope of Section L1.1.1 meet requirements of Section L2.1.2.1, Prescriptive Compliance Path, the H01 credit shall be calculated using Equation 11.2.2.1a:
H01 MEC = H01 BEC x (ATSPR /ATotal) (Equation 11.2.2.1a)
Where:
H01 BEC = H01 energy credits from Table 11.1.43(1) through 11.1.43(9). For buildings that have multiple occupancies, H01 base energy credits shall be calculated as a weighted average based on gross conditioned floor area.
ATSPR = gross conditioned floor area served by the systems in the scope of Section JL1.1
ATotal = total building gross conditioned floor area
b. If all HVAC systems in the scope of Section L1.1.1 meet requirements of Section L2.1.2.2, Modeling-based Compliance Path, the H01 credit shall be calculated using Equation 11.2.2.1b:
H01 MEC = (TSPRp * MPF * H01BEC/TSPRr) x (ATSPR /ATotal) (Equation 11.2.2.1b)
If TSPRp<(TSPRr/MPF) * 0.95, then H01MEC=0
If TSPRp>1.2 * TSPRr/MPF then H01MEC = 1.2 * H01BEC
Where:
TSPRp = proposed TSPR calculated in accordance with Section JL2.1.5 and the requirements of Sections L2, L3, L4
TSPRr = reference TSPR calculated in accordance with Section JL2.1.5 and the requirements of Sections L2, L3 and JL4.
MPF = mechanical performance factor calculated in accordance with JL2.1.2.2.
11.2.2.2 H02 More efficient space heating equipment performance
Not less than 90 percent of the total HVAC heating capacity serving the total conditioned floor area of the entire building or tenant space shall comply with the requirements of this section.
For buildings pursuing H01 for the qualified systems, H02 energy credits for heating efficiency improvement shall be prorated based on conditioned floor area as shown in Equation 11.2.2.2 and apply to no less than 90 percent of the total space heating capacity excluded from H01. No heating equipment shall use fossil fuel sources to claim credit for H02.
Equipment installed shall be types that are listed in tables referenced by Section 6.4.1. Electric resistance heating that is not heat pump supplemental heating shall be limited to 20 percent of total system capacity applicable under H02. Equipment shall exceed the applicable minimum heating efficiency requirement listed in Tables referenced by Section 6.4.1 by not less than 5 percent. Where equipment exceeds the minimum rated heating efficiency requirements by greater than 5 percent, energy efficiency credits for heating shall be determined using the equation as follows rounded to the nearest whole number.where
H02 MEC = H02 BEC × HEI/ 5% x (1-ATSPR /ATotal) (Equation 11.2.2.2)
Where:
HEI = the lesser of the improvement above minimum rated heating efficiency requirements or 20 percent. For heat pumps rated at multiple ambient temperatures, the efficiency at 47°F (8.3°C) shall be used. The heating efficiency metric is HSPF/ HSPF2 (heating seasonal performance factor) for split and packaged heat pumps and packaged terminal heat pumps with nominal capacity less than 65,000 Btu/h (19 kW) and COPH for heat pumps with nominal capacity of 65,000 Btu/h (19 kW) or greater. Where heating equipment with different minimum efficiencies are included in the building, a heating capacity weighted-average improvement shall be used. Where electric resistance primary heating or reheat is included in the building, it shall be included in the weighted-average improvement with an HEI of 0 For metrics that increase as efficiency increases, HEI shall be calculated as follows:
HEI = (HMDES /HMMIN ) - 1
where:
HMDES = Design heating efficiency metric, part-load or annualized where available.
HMMIN = Minimum required heating efficiency metric, part-load or annualized where available from the Tables referenced by Section 6.4.1.
ATSPR = gross conditioned floor area served by the systems in the scope of Appendix L
ATotal = total building gross conditioned floor area
11.2.2.3 H03 More efficient space cooling equipment and fan performance.
1. For buildings not pursuing H01, no less than 90 percent of the total space cooling capacity serving the total conditioned floor area of the entire building, or tenant space in accordance with Section 11.1.1, shall comply with all of the requirements of this section. For buildings pursuing H01 for the qualified systems, energy credits for cooling efficiency improvement shall be prorated based on conditioned floor area as shown in Equation 11.2.2.3 and apply to no less than 90 percent of the total space cooling capacity excluded from H01. Equipment installed shall be types that are listed in Tables referenced by Section 6.4.1
2. Equipment shall exceed the minimum cooling efficiency requirements listed in Tables referenced by Section 6.4.1 by at least 5 percent. Where equipment classes have multiple ratings, the seasonal or part-load efficiency rating (SEER2, IEER) must exceed the minimum requirement by 5 percent, and the full-load efficiency rating (EER) must exceed minimum requirements. Where equipment exceeds the minimum annual cooling efficiency and heat rejection efficiency requirements by more than 5 percent, energy efficiency credits for cooling shall be determined using Equation 11.2.2.3, rounded to the nearest whole number.
3. Where fan energy is not included in packaged equipment rating or it is and the fan size has been increased from the as-rated equipment condition, fan power or brake horsepower shall be less than 95 percent of the allowed fan power in Section 6.5.3.1.
H03 MEC = H03 BEC × CEI/5% x (1-ATSPR /ATotal) (Equation 11.2.2.3)
Where:
CEI = the lesser of the improvement above minimum cooling and heat rejection efficiency requirements, or 50 percent. For buildings with multiple equipment and varied efficiency levels, this efficiency improvement is the capacity-weighted average efficiency improvement over the requirements in Section 6.4.1. Air-to-water heat pumps shall have an assumed efficiency improvement of 5% over standard efficiency levels of Section 6.4.1 for the purpose of this credit.
For metrics that increase as efficiency increases, CEI shall be calculated as follows:
CEI = (CMDES /CMMIN ) - 1.
For metrics that decrease as efficiency increases, CEI shall be calculated as follows:
CEI = (CMMIN /CMDES ) - 1.
where:
CMDES = Design cooling efficiency metric, part-load or annualized where available.
CMMIN = Minimum required cooling efficiency metric, part-load or annualized where available from the Tables referenced by Section 6.4.1.
ATSPR = gross conditioned floor area served by the systems in the scope of Appendix L
ATotal = total building gross conditioned floor area
11.2.2.4 H04 Residential HVAC control
HVAC systems serving dwelling units or sleeping units shall be controlled with a programmable thermostat that is configured to automatically activate a setback condition of not less than 5°F (3°C) for both heating and cooling. The programmable thermostat shall be configured to provide setback during occupied sleep periods. The unoccupied setback mode shall be configured to operate in conjunction with not less than one of the following:
1. A manual main control device by each dwelling unit main entrance that initiates setback and non-ventilation mode for all HVAC units in the dwelling unit and is clearly identified as “Heating/Cooling Master Setback.”
2. Occupancy sensors in each room of the dwelling unit combined with a door switch to initiate setback and non-ventilation mode for all HVAC units in the dwelling unit within 20 minutes of all spaces being vacant immediately after a door switch operation. Where separate room HVAC units are used, an individual occupancy sensor on each unit that is configured to provide setback shall meet this requirement.
3. A smart thermostat that senses occupant presence and automatically creates a schedule for occupancy and provides a dynamic setback schedule based on when the spaces are generally unoccupied.
4. An automated control and sensing system that uses geographic fencing connected to the dwelling unit occupants’ cell phones and initiates the setback condition when all occupants are away from the building.
11.2.2.5 H05 Dedicated Outdoor Air System (DOAS).
Credits for this measure are only allowed where single-zone HVAC units are not required to have multispeed or variable-speed fans control in accordance with Section 6.5.3.2.1. DOAS systems shall include all of the following:
1. Zone controls shall cycle the indoor fans with the load. Packaged units that provide cooling and/or heating but no ventilation shall cycle the supply fans with the load.
2. Outdoor air shall be supplied by an independent ventilation system designed to provide no more than 110% percent of the minimum outdoor air to each individual occupied zone as specified by the New York City Mechanical Code.
3. The ventilation system shall have energy recovery with an enthalpy recovery ratio (ERR) of 65% percent or more at heating design conditions. Energy recovery shall include latent recovery.
4. Where the ventilation system serves multiple zones, partial economizer cooling throughan outdoor air bypass or wheel speed control shall automatically do one of the following:
a. Set the energy recovery leaving air temperature at 55°F 60°F (16°C) or lower, or enable 100% outdoor air bypass (wheel speed control not permitted) when a majority of zones require cooling and outdoor air temperature is below 70°F (21°C). .
b. The HVAC system shall include supply-air temperature controls that automatically reset the supply-air temperature in response to outdoor air temperatures. The controls shall reset the supply-air temperature not less than 25 percent of the difference between the design supply-air temperature and the design room-air temperature.
5. Ventilation systems providing mechanical dehumidification shall use recovered energy for reheat.
The base energy credit shown in Tables 11.1.3(1) through 11.1.3(9) shall be prorated proportionately to the conditioned floor area allowed to be served by single zone constant-volume HVAC units per Equation 11.2.2.5.
H05 MEC = H05 BEC x (CFA-DOAS / CFA-TOTAL) (Equation 11.2.2.5)
Where:
CFA-DOAS = Gross conditioned floor area where constant-air-volume single-speed fans are allowed and meet measure requirements.
CFA-Total =T total gross conditioned floor area of the building
11.2.2.6 H06 Cold-Climate Heat Pumps (CCHP)
To achieve this credit, at least 90 percent of the total installed space heating capacity shall be met by air-source cold-climate heat pumps meeting all of the following minimum requirements of the Northwest Energy Efficiency Partnerships (NEEP) Cold Climate Air-Source Heat Pump Specification Version 3.1:
1. For Non-Ducted systems: HSPF >10
2. For Ducted systems: HSPF >9
3. COP at 5°F >1.75 (at maximum capacity operation)
4. SEER > 15
For buildings pursuing energy credits from H01 for the qualified systems, H06 energy credits for heating efficiency improvement shall be prorated based on gross conditioned floor area as shown in Equation 11.2.2.6 and apply to no less than 90 percent of the total space heating capacity excluded from H01. No heating equipment shall use fossil fuel sources to claim credit for H06.
H06 MEC = H06 BEC × (1-ATSPR /ATotal) (Equation 11.2.2.6)
Where :
ATSPR = gross conditioned floor area served by the systems in the scope of Appendix L
ATotal = total building gross conditioned floor area
11.2.3 Reduced Energy Use in Service Water Heating
Buildings with service water heating (SHW) equipment that serves an entire newly constructed building, a building addition or a tenant space shall achieve credits through compliance with the requirements of this section. Systems are permitted to achieve energy credits by meeting the requirements of one or more of the following items:
1. Section 11.2.3.1 by selecting no more than one allowed measure W01 or W02
2. Section 11.2.3.2 W04
3. Section 11.2.3.3 by selecting no more than one allowed measure W05, W06, or W07
4. Section 11.2.3.4 W08
5. Section 11.2.3.5 W09
6. Section 11.2.3.6 W10
11.2.3.1 Service water-heating system efficiency
A building is allowed to claim energy credits from only one of the following water-heating system efficiency measures.
1. W01 Recovered or renewable water heating. The building service water heating system shall have one or more of the following that are sized to provide not less than 30 percent of the building’s annual hot water requirements or sized to provide 70 percent of the building’s annual hot water requirements if the building is required to comply with Section 6.5.6.2:
a. Waste heat recovery from heat recovery chillers, building equipment, or process equipment.
b. A water-to-water heat pump that precools chilled water return for building cooling.
c. On-site renewable energy water-heating system.
2. W02 Heat pump water heater. To achieve this credit, air-source heat pump water heaters shall not draw conditioned air from within the building, except exhaust air that otherwise would be exhausted to the exterior. Any recirculating system and auxiliary water heating system shall be met with a separate heating source from the heat pump water heater. Requirements shall be in accordance with one of the following:
a. For multifamily, dormitories, and health care occupancies with a recirculating system, at least 30 percent of design end-use service water heating requirements shall be met using heat pump preheat with a coefficient of performance (COP) of not less than 4.0 tested at 50°F (10°C) entering air and 70°F (21°C) entering water in accordance with AHRI Standard 1300. A preheat storage tank equal to 25 percent of peak demand shall be included in design.
b. For office, restaurant, and school occupancies with piping temperature maintenance, at least 30 percent of design end-use service water-heating requirements shall be met using heat pump preheat with a combined input-capacity-weighted-average uniform energy factor (UEF) of 3.0 with a medium draw pattern for unitary equipment with either a heat trace system or a separate water heater in series for recirculating system and final heating.
c. For retail, office, and warehouse occupancies with no recirculating system, at least 30 percent of design end-use service water heating requirements shall be met using the heat pump portion of a hybrid water heater with a combined input-capacity-weighted-average UEF of 3.0 with a medium draw pattern for unitary equipment, including electric resistance heating to meet peak loading.
Where the heat pump capacity at 50°F (10°C) entering air and 70°F (21°C) entering water exceeds 50 percent of the design end-use service water heating load excluding recirculating system losses, the base credits from Section 11.1 and Tables 11.1.3(1) through 11.1.3(9) shall be prorated based on Equation 11.2.3.1.
W02 MEC = W02 BEC × HPLF/50% (Equation 11.2.3.1)
HPLF = Heat pump rated heating capacity at 50°F (10°C) entering air and 70°F (21°C) entering water as a fraction of the design end-use service water heating capacity, excluding recirculating system losses, not to exceed 80 percent.
11.2.3.2 W04 Water-heating pipe insulation.
To achieve this credit, where ser- vice hot water service water heating (SHW) is provided by a central water heating system, the hot-water pipe insulation thickness shall be at least 1.5 times the thickness required in Table 6.8.3-1. All SHW piping shall be insulated from the hot-water source to the fixture shutoff. For Group S (warehouse and storage) and Group M (retail) occupancies, this measure is only available where a recirculation or heat trace system is used and piping length exceeds 80 linear feet (24 m).
11.2.3.3 Water-heating distribution temperature maintenance
A service water heating (SHW) system is allowed to claim energy credits from no more than one of the following SHW distribution temperature maintenance measures.
1. W05: Point-of-Use Water Heaters. Credits are available for office or school buildings larger than 10,000 ft2 (930 m2). Buildings that use recirculating water heating systems or heat trace are not eligible for this credit. Separate water heaters serving commercial kitchens or showers in locker rooms shall be permitted to have a local recirculating system or heat trace piping. Supply piping from the water heater to the termination of the fixture supply pipe shall be insulated to the levels shown in Table 6.8.3-1 without exception. The volume from the water heater to the termination of the fixture supply pipe shall be limited as follows:
a. Nonresidential lavatories: not more than 2 oz (60 mL)
b. All other plumbing fixtures or appliances: not more than 0.25 gal (0.95 L)
2. W06: Thermostatic Balancing Valves. Credits are available where service water heating (SHW) is provided centrally and distributed throughout the building. Each recirculating system branch return connection to the main SHW supply piping shall have an automatic thermostatic balancing valve set to a minimal return water flow when the branch return temperature is greater than 115°F (46°C).
3. W07 Heat trace system. Credits are available for buildings with gross floor area greater than 10,000 square feet (929 m2) and a central water heating system. This system shall include self-regulating electric heat cables, connection kits, and electronic controls. The cable shall be installed directly on the hot water supply pipes underneath the insulation to replace standby losses.
11.2.3.4 W08 Water-heating system submeters.
To achieve this credit, each individual dwelling unit served by a central service water heating system shall be pro- vided with a meter connected to a reporting system that provides individual dwelling unit reporting of actual domestic hot-water use. Preheated water serving the cold- water inlet to showers need not be metered. Where other codes or regulations require individual dwelling unit hot water metering, energy credits for this measure shall not be allowed.
11.2.3.5 W09 Water heating distribution sizing
To achieve this credit, where Group R-1 and R-2 occupancies are served by a central service water heating system, the distribution system serving dwelling units and guest rooms shall be sized using IAPMO/ANSI WE-Stand - 2017 Water Efficiency and Sanitation Standard for the Built Environment., Plumbing fixtures in residential spaces that are connected to the service water heating system shall have a flow or consumption rating less than or equal to the values shown in Table 11.2.3.5. Where other codes or regulations require fixture flows to be equal to or less than listed in Table 11.2.3.5 only half of the base energy credits shall be achieved for this measure.
Informative Note: Where low water supply pressures are anticipated, user satisfaction may be enhanced if flow restrictors are specified to provide ≥80% of the rated flow at 20 psi. Where the distribution sizing protocol is applied to other than multifamily residential buildings, a variance to the plumbing code may be needed.
Table11.2.3.5 Maximum Flow Rating for Residential Plumbing Fixtures with Heated Water
|
Plumbing Fixture |
Maximum Flow Rate |
|
Faucet for private lavatory a, hand sinks, or bar sinks |
1.50 gpm at 60 psi (0.095 L/s at 410 kPa) |
|
Faucet for residential kitchen sink a, b, c |
1.8 gpm at 60 psi (0.11 L/s at 410 kPa) |
|
Shower head (including hand-held shower spray) a, b, d |
2.0 gpm at 80 psi (0.13 L/s at 550 kPa) |
a. Shower heads, lavatory faucets, and kitchen faucets are subject to U.S. federal requirements listed in 10 CFR 430.32(o) through (p).
b. Maximum flow allowed is less than required by flow rates listed in U.S. 10 CFR 430.32(o) through (p) for shower heads and kitchen faucets.
c. A Residential kitchen faucet is permitted to temporarily increase the flow above the maximum rate but shall not exceed 2.2 gal/min at 60 psi (0.14 L/s at 410 kPa) and must default to the maximum flow rate listed.
d. When a shower is served by multiple shower heads, the combined flow rate of all shower heads controlled by a single valve shall not exceed the maximum flow rate listed, or the shower shall be designed to allow only one shower head to operate at a time.
11.2.3.6 W10 Shower drain heat recovery.
To achieve this credit, cold water serving building showers shall be preheated by shower drain heat recovery units that comply with CSA B55.2. Potable water- side pressure loss shall be less than 10 psi (69 kPa) at maximum design flow. The efficiency of drain heat recovery units shall be 54% percent or greater measured in accordance with CSA B55.1. Full credits are applicable to the following building use types: health clinic, hospital, hotel, motel, multifamily, retirement facility, dormitory, and schools with more than eight showers. Partial credits are applicable to buildings where all but ground- floor showers are served. Partial credit shall be calculated by adjusting the base energy credit from Tables 11.1.3(1) through 11.1.3(9) using Equation 11.2.3.6.
W10 MEC = W10 BEC x showers-with-DWHR / total-num-showers (Equation 11.2.3.6)
Where:
Showers-with-DHWR = the number of showers with drain water heat recovery
Total-num-showers = the total number of showers in the building
11.2.4 P01: Energy Monitoring.
A building not required to have electrical energy monitoring systems installed in accordance with Section 8.4.3 shall be equipped to measure, monitor, record, and report energy consumption data in compliance with Section 8.4.3.
11.2.5 Energy Savings in Lighting Systems
Buildings are permitted to achieve energy credits for increased lighting system performance by meeting the requirements of measures L02 through L06. Any combination of measures L02 through L06 is allowed.
11.2.5.1 L01: Lighting System Performance Improvement (Reserved)
11.2.5.2 L02: Enhanced digital lighting controls
Projects are eligible for L02 credits if not less than 50 percent of the gross floor area within the building complies with the requirements of this section.
1. Lighting controls function. Interior general lighting controls shall be located, scheduled, and operated in accordance with Section 9.4.1 and shall be configured with the following enhanced control functions:
a. Luminaires shall be configured for continuous dimming.
b. Each luminaire shall be individually addressed.
Exceptions to Section 11.2.5.2(1)(b)
1. Multiple luminaires mounted on no more than 12 linear feet (3.7 m) of a single lighting track and addressed as a single luminaire
2. Multiple linear luminaires that are ganged together to create the appearance of a single longer luminaire and addressed as a single luminaire, where the total length of the combined luminaires is not more than 12 feet (3.7 m)
c. No more than eight luminaires within a daylight zone are permitted to be controlled by a single daylight responsive control.
2. Luminaires shall be controlled by a digital control system configured with the following capabilities:
a. Scheduling and illumination levels of individual luminaires and groups of luminaires are capable of being reconfigured through the system.
b. Load shedding.
c. In open and enclosed offices, the illumination level of overhead general illumination luminaires is configured to be individually adjusted by occupants.
d. Occupancy sensors and daylight responsive controls are capable of being reconfigured through the system.
3. Construction documents shall include submittal of a Sequence of Operations, including a specification outlining each of the functions required by this section
4. High-end trim. Luminaires shall be initially configured with the following:
a. High-end trim, setting the maximum light output of individual luminaires or groups of luminaires to support visual needs of a space or area, shall be implemented, and construction documents shall state that maximum light output or power of controlled lighting shall be initially reduced by at least 15 %percent from full output. The average maximum light output or power of the controlled lighting shall be documented without high-end trim and with high-end trim in accordance with Section 9.9.1 to verify reduction of light output or power by at least 15 %percent when tuned.
b. Where lumen maintenance control without lighting sensors is used, controls shall be configured to limit the initial maximum lumen output or maximum lighting power to 85% percent or less of full light output or full power draw and lumen maintenance controls shall be limited to increasing lighting power by 1 percent per year.
c. High-end trim and lumen maintenance controls shall be accessible only to authorized personnel.
Where general lighting in more than 50 percent of the gross lighted floor area receives high-end trim, the base credits from Tables 11.1.3(1) through 11.1.3(9) shall be prorated using Equation 11.2.5.2a as follows:
L02 MEC = [Tuned lighted floor area, %] × [L02 BEC] / 50% (Equation 11.2.5.2a)
Where:
Tuned lighted floor area, % = the percentage of floor area where all lighting complies with all of the requirements of L02.
Where credit is achieved for both L02 and L06, the base credits from Tables 11.1.3(1) through 11.1.3(9) shall be prorated using Equation 11.2.5.2b as follows:
L02 MEC = [Tuned lighted floor area, %] × [L02 BEC] / 50% * % LPD reduction for tuned lighting (Equation 11.2.5.2b)
Where:
Tuned lighted floor area, % = the percentage of floor area where light fixtures comply with the requirements of L02 and L06.
11.2.5.3 L03: Reserved
11.2.5.4 L04: Reserved
11.2.5.5 L05 Residential light control
To achieve this credit, dwelling unit lighting systems shall comply with all of the following.
a. Each dwelling unit shall have a main control by the main entrance that turns off all the lights and all switched receptacles in the dwelling unit.
b. The main control shall be permitted to have two controls, one for permanently wired lighting and one for switched receptacles.
c. Where controls are divided the main controls shall be clearly identified as “lights master off” and “outlets master off.”
11.2.5.6 L06: Reduced lighting power.
To achieve these credits, all of the interior lighting shall comply with all the requirements of this section. In, Group R-2 occupancies the credit is calculated based on the lighting power in all common areas other than dwelling units and guest rooms. In addition, no less than 95 percent of the permanently installed light fixtures in dwelling units and guest rooms shall be provided by high-efficacy lamps with a minimum efficacy of 75 lumens per watt, or high-efficacy luminaires that have a minimum efficacy of 55 lumens per watt. Permanently installed lighting fixtures with non-permanent lighting sources must use the maximum wattage approved for use by the manufacturer or other approved sources.
For all other occupancies, the total connected interior lighting power (LPn) shall be 95 percent or less than the lighting power allowance (LPAn) determined in accordance with Section 9.6.1. Energy credits shall be determined based on one of the following equations:
a. Where LPn ≤ 80% of LPAn, energy credits shall be determined using Equation 11.2.5.6a.
ECLPA = EC5*4 (Equation 11.2.5.6a)
Where:
ECLPA = additional energy credit for lighting power reduction.
EC5 = L06 base credit from Tables 11.1.3(1) through 11.1.3(9).
b. Where LPn > 80% of LPAn and LPn ≤ 95% of LPAn energy credits shall be determined using Equation 11.2.5.6b.
L06 MEC = L06 BEC x 20 x (LPAn - LPn) / LPAn (Equation 11.2.5.6b)
Where:
LPn = net total installed interior lighting power calculated in accordance with Section 9.4.1, watts, less any additional lighting power allowed in Section 9.6.2.
LPAn = interior lighting power allowance calculated in accordance with the requirements of Section 9.6.1, watts, less any additional interior lighting power allowed in Section 9.6.2.
11.2.6 Reserved.
11.2.7 Efficient Equipment Credits.
11.2.7.1 Q01: Efficient Elevator and Escalator Equipment.
Only buildings 3 or more floors above grade shall be permitted to use this credit. Credits shall be prorated based on Equation 11.2.7.1, rounded to the nearest whole credit. At least 50 percent of the building’s floors must be served by Class A elevators, as defined by ISO 25745-2, Table 7, to be eligible for this credit.
Q01 MEC = Q01 BEC × FA/FB (Equation 11.2.7.1)
Where:
FA = Sum of floors served by class A elevators and escalators
FB = Sum of floors served by all building elevators and escalators
11.2.7.2 Q02: Efficient Commercial Kitchen Equipment. Reserved
11.2.7.3 Q03: Fault detection and diagnostics system.
To achieve this credit, where not other- wise required in Sections 6 through 10, a fault detection and diagnostics (FDD) system shall be installed to monitor the HVAC system’s performance and automatically identify faults. This installation is in addition to and more comprehensive than existing requirements in Section 6.4.3.12. The FDD system shall include all of the following:
a. Utilize sensors or devices to directly or indirectly monitor the HVAC system’s central plant equipment, zone terminal equipment, and associated mechanical components, including (but not limited to) motors, actuators, valves, and dampers. Control device positions or air and fluid flows shall be permitted to be estimated based on related sensed inputs.
b. Sample the sensors and devices at least once per 15 minutes.
c. Automatically identify HVAC system faults using algorithmic-based analysis that performs rule-based, time-series trend-based, statistically based, or model-based diagnostics, including (where applicable) identification of, at a minimum, the following faults that affect energy performance:
i. Simultaneous heating and cooling above an expected threshold or short-term cycling between heating and cooling
ii. System operation outside of scheduled hours above an expected threshold
iii. Air or fluid flows not modulating when designed to be variable
iv. Significant changes in energy use as a function of ambient or other conditions
d. Automatically provide authorized personnel with prioritized recommendations for fault repair of identified faults based on estimated excess energy consumption or cost of non-repair.
e. Be capable of transmitting the prioritized fault repair recommendations to remotely located authorized personnel.
The FDD system requirements of items (a) through (e) shall be allowed to be incorporated into a Building Management System (BMS) or Building Automation System (BAS).
Informative Note: FDD is in addition to standard BAS/BMS monitoring and alarming functionality. Faults identified may also include failing or failed system components, poor air or fluid flow, inoperable valves and dampers, sensors and devices out of calibration, undermaintained equipment and filters, failing or failed bearings, or unresponsive actuators and devices.
11.3 Additional Load Management Credits.
Each load management credit measure in Sections 11.3.1 through 11.3.8 used to meet credit requirements in Table 11.1.1 for the building shall achieve performance that is greater than the performance required for the building type and configuration requirements in Sections 5 through 10. The available credits for each occupancy and climate zone are in Tables 11.3(1) through 11.3(9).
The load management measures in Sections 11.3.2 (G01) through 11.3.7 (G06) require load management control sequences that are capable of and configured to automatically provide the load management operation specified based on indication of a peak period related to high short-term electric prices, grid condition, or peak building load. Such a peak period shall, where possible, be initiated by a demand response signal from the controlling entity, such as a utility or service operator. Where communications are disabled or unavailable, all demand responsive controls shall continue backup demand response based on a local schedule or building-demand monitoring.
The local building schedule shall be adjustable without programming and reflect the electric rate peak period dates and times. The load management control sequences shall be activated for peak period control by one of the following:
1. A certified OpenADR 2.0a or OpenADR 2.0b Virtual End Node (VEN), as specified under Clause 11, Conformance, in the applicable OpenADR 2.0 Specification.
2. A device certified by the manufacturer as being capable of responding to a demand response signal from a certified OpenADR 2.0b VEN by automatically implementing the control functions requested by the VEN for the equipment it controls.
3. The physical configuration and communication protocol of ANSI/CTA-2045-A or ANSI/CTA-2045-B.
4. For air conditioners and heat pumps with two or more stages of control and cooling capacity of less than 65,000 Btu/h (19 kW), thermostats with a demand responsive control that complies with the communication and performance requirements of AHRI 1380.
5. A device that complies with IEC 62746-10-1, an international standard for the open automated demand response system interface between the appliance, system, or energy management system and the controlling entity.
6. An interface that complies with the communication protocol required by a controlling entity to participate in an automated demand response program.
7. Where the controlling entity does not have a demand response signal available for the building type and size, local load management control shall be provided based on either:
7.1 Building demand management controls that monitor building electrical demand and initiate controls to minimize monthly or peak time period demand charges.
7.2 A local building schedule that reflects the electric rate peak period dates and times where buildings are less than 25,000 gross square feet (2322 m2).
In this case, a binary input to the control system shall be provided that activates the demand response sequence.
TABLE 11.3(1) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP R-2, R-4, AND I-1 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
10 |
9 |
9 |
|
G01 |
Lighting load management |
11.3.2 |
11 |
8 |
5 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
2 |
10 |
1 |
|
G04 |
Electric energy storage |
11.3.5 |
16 |
14 |
14 |
|
G05 |
Cooling energy storage |
11.3.6 |
12 |
9 |
7 |
|
G06 |
SHW energy storage |
11.3.7 |
19 |
19 |
18 |
|
G07 |
Building thermal mass |
11.3.8 |
19 |
32 |
27 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(2) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP I-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
6 |
6 |
6 |
|
G01 |
Lighting load management |
11.3.2 |
13 |
13 |
14 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
x |
x |
x |
|
G04 |
Electric energy storage |
11.3.5 |
14 |
14 |
13 |
|
G05 |
Cooling energy storage |
11.3.6 |
16 |
14 |
11 |
|
G06 |
SHW energy storage |
11.3.7 |
4 |
4 |
4 |
|
G07 |
Building thermal mass |
11.3.8 |
18 |
31 |
25 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(3) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP R-1 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
9 |
9 |
8 |
|
G01 |
Lighting load management |
11.3.2 |
14 |
10 |
9 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
3 |
1 |
1 |
|
G04 |
Electric energy storage |
11.3.5 |
14 |
14 |
13 |
|
G05 |
Cooling energy storage |
11.3.6 |
18 |
15 |
12 |
|
G06 |
SHW energy storage |
11.3.7 |
29 |
28 |
26 |
|
G07 |
Building thermal mass |
11.3.8 |
17 |
30 |
26 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(4) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP B OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
17 |
14 |
14 |
|
G01 |
Lighting load management |
11.3.2 |
10 |
10 |
10 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
4 |
4 |
5 |
|
G04 |
Electric energy storage |
11.3.5 |
17 |
17 |
16 |
|
G05 |
Cooling energy storage |
11.3.6 |
17 |
15 |
12 |
|
G06 |
SHW energy storage |
11.3.7 |
7 |
7 |
6 |
|
G07 |
Building thermal mass |
11.3.8 |
4 |
9 |
8 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(5) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP A-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
2 |
2 |
2 |
|
G01 |
Lighting load management |
11.3.2 |
4 |
4 |
4 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
x |
x |
x |
|
G04 |
Electric energy storage |
11.3.5 |
4 |
3 |
4 |
|
G05 |
Cooling energy storage |
11.3.6 |
5 |
3 |
2 |
|
G06 |
SHW energy storage |
11.3.7 |
16 |
16 |
15 |
|
G07 |
Building thermal mass |
11.3.8 |
6 |
8 |
6 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(6) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP M OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
11 |
10 |
9 |
|
G01 |
Lighting load management |
11.3.2 |
18 |
18 |
18 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
7 |
8 |
8 |
|
G04 |
Electric energy storage |
11.3.5 |
11 |
10 |
11 |
|
G05 |
Cooling energy storage |
11.3.6 |
17 |
11 |
9 |
|
G06 |
SHW energy storage |
11.3.7 |
4 |
4 |
4 |
|
G07 |
Building thermal mass |
11.3.8 |
7 |
14 |
13 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(7) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP E OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
15 |
14 |
13 |
|
G01 |
Lighting load management |
11.3.2 |
12 |
10 |
16 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
12 |
10 |
14 |
|
G04 |
Electric energy storage |
11.3.5 |
22 |
23 |
20 |
|
G05 |
Cooling energy storage |
11.3.6 |
24 |
20 |
16 |
|
G06 |
SHW energy storage |
11.3.7 |
7 |
7 |
7 |
|
G07 |
Building thermal mass |
11.3.8 |
21 |
37 |
31 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(8) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP S-1 and S-2 OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
36 |
29 |
24 |
|
G01 |
Lighting load management |
11.3.2 |
31 |
32 |
36 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
x |
x |
x |
|
G04 |
Electric energy storage |
11.3.5 |
30 |
21 |
24 |
|
G05 |
Cooling energy storage |
11.3.6 |
5 |
2 |
1 |
|
G06 |
SHW energy storage |
11.3.7 |
3 |
3 |
2 |
|
G07 |
Building thermal mass |
11.3.8 |
18 |
28 |
20 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. |
TABLE 11.3(9) RENEWABLE AND LOAD MANAGEMENT CREDITS FOR GROUP OTHER OCCUPANCIES
|
Credit ID |
ENERGY CREDIT ABBREVIATED TITLE |
SECTION |
CLIMATE ZONE |
|
|
|
|
4A |
5A |
6A |
|
R01 |
Renewable energy |
11.3.1 |
13 |
12 |
11 |
|
G01 |
Lighting load management |
11.3.2 |
14 |
13 |
14 |
|
G02 |
HVAC load management |
11.3.3 |
x |
x |
x |
|
G03 |
Automated shading |
11.3.4 |
5 |
5 |
5 |
|
G04 |
Electric energy storage |
11.3.5 |
16 |
15 |
14 |
|
G05 |
Cooling energy storage |
11.3.6 |
14 |
11 |
9 |
|
G06 |
SHW energy storage |
11.3.7 |
11 |
11 |
10 |
|
G07 |
Building thermal mass |
11.3.8 |
14 |
24 |
20 |
|
HVAC = Heating, Ventilation and Air Conditioning; SHW = Service Hot Water. x = Credits excluded from this building use type and climate zone. a. Other occupancy groups include all Groups except for Groups A-2, B, E, I, M and R. |
11.3.1 R01: On-Site Renewable Energy.
To achieve this credit, the total minimum ratings of on-site renewable energy systems in addition to the requirements of Section 10.5.1.1 shall be not less than 0.1 W/ft2 of gross floor area. Additional energy credits shall be determined as follows:
where
ECR01_adj = energy credits achieved for on-site renewable energy
ECR01_base = R01 base energy credit from Section 11.5.3
RRtotal = actual total minimum rating of on-site renewable energy systems, W
RRreq = minimum rating of on-site renewable energy systems required by Section 10.5.1.1 without exception, W
PGFA = project gross floor area
Informative Note: On-site renewable energy may include thermal service water heating or pool water heating in which case ratings in Btu/h can be converted to W, where W = Btu/h/3.413.
11.3.2 G01: Lighting Load Management.
To achieve this credit, luminaires shall have dimming capability, and load management controls shall gradually, over a period of not more than 15 minutes, reduce general lighting power with continuous dimming in 75% of the project area by at least 20% during peak-price periods coincident with high building load. It shall be permitted to substitute decorative and display-lighting equivalent power reductions for general lighting reductions. Where less than 75% but at least 50% of the project general lighting is controlled, the base credits from the tables in Section 11.5.3 shall be prorated as follows:
(Portion of project with lighting load management, % / 75%) x G01 table credits
Exception to 11.5.2.8.1: Warehouse, semiheated, or retail storage areas with load management controls shall be permitted to switch off at least 25% of lighting power in 75% of the project area without dimming.
11.3.3 G02: HVAC Reserved.
11.3.4 G03: Automated Shading Load Management.
To achieve this credit, movable exterior shading devices shall be installed to reduce solar gain through south-oriented and west-oriented fenestration by at least 50% with load management controls that operate during peak summer electrical price periods.
Informative Note: This credit can be met by exterior roller, movable blind, or movable shutter shading devices; however, base overhang, screen or shutter, shading will not meet the requirement. Roller shades that reject solar gain but still allow a view are allowed as long as they provide an effective 50% reduction in net solar gain-e.g., have a shading coefficient of less than 0.5 for the shading material itself. Interior shading devices will not meet the requirement.
11.3.5 G04: Electric Energy Storage.
To achieve this credit, electric storage devices such as batteries or flywheel devices shall be charged by load management controls to store electricity during off-peak periods and use stored energy during on-peak periods to reduce building peak period demand. Electric storage devices shall have a capacity between 1.5 Wh/ft2 and 15 Wh/ft2 based on project gross floor area. For capacity other than 1.0 Wh/ft2, credits can be prorated as follows:
---------------------------------------------- x G04 table credits
5.0
11.3.6 G05: HVAC Cooling Energy Storage.
To achieve this credit, ice or chilled-water storage equipment shall be installed and load management controls configured to reduce electric cooling peak demand. Storage tank(s) shall be demonstrated through analysis to have less than 2% loss of stored capacity over a 24-hour period for the cooling design day.
Base energy credits in Section 11.5.3 are for storage capacity of 1.0 ton-hours storage per ton of design-day cooling load with a 1.15 sizing factor. Prorate energy credits for other installed storage systems sized between 0.5 and 4.0 ton-hours storage per ton of design-day cooling load. Larger storage shall be permitted; however, credits are limited to 4.0 ton-hours storage per ton of design-day cooling load. Energy credits shall be determined as follows:
ECG05_adj = ECG05_base x (1.44 x SR + 0.71)/2.15
Where:
ECG05_adj = energy credits achieved for HVAC cooling energy storage
ECG05_base = G05 base energy credit for building use type and climate zone based on ton-hours storage per ton of design-day cooling load
SR = storage ratio in ton-hours storage per ton of design-day cooling load, where 0.5 ≤ SR ≤ 4.0
11.3.7 G06: Service Hot-Water Thermal Storage.
To achieve this credit, where service hot water is heated by electricity, automatic controls activated by utility demand response signal, peak price period time control, or local building demand monitoring shall preheat stored service hot water before the peak-price period and suspend electric water heating during the period of peak prices coincident with peak building load. Storage capacity shall be provided by either of the following:
c. Preheating water above 140°F delivery temperature with at least 1.2 kWh of energy storage per kW of water heating capacity. Tempering valves shall be provided at the water heater delivery location. This option is not available where heat-pump water heating is used.
d. Providing additional heated water tank storage capacity above peak service hot-water demand with equivalent peak storage capacity to item (a).
11.3.8 G07: Building Thermal Mass.
To achieve this credit, the project shall have both additional House interior mass and a night flush control of the HVAC system. The credit is only available to projects that have at least 80% of gross floor area unoccupied between midnight and 6:00 a.m.
a. Interior to the building envelope insulation, provide 10 lb/ft2 of project conditioned floor area of passive thermal mass in the building interior wall, the inside of the exterior wall, or interior floor construction. Mass construction shall have mass surfaces directly contacting the air in conditioned spaces with directly attached gypsum panels allowed. Mass with carpet or furred gypsum panels, or exterior wall mass that is on the exterior of the insulation layer (e.g., the portion of CMU block on the exterior of insulation filled cell cavities), shall not be included toward the building mass required.
b. HVAC units for 80% or more of the supply airflow in the project shall be equipped with outdoor air economizers and fans that have variable or low speed capable of operating at 66% or lower airflow and be included in the night flush control sequence.
c. Night flush controls shall be configured with the following sequence, or another night flush strategy shall be permitted where it is demonstrated to be effective, avoids added morning heating, and is approved by the authority having jurisdiction.
1. Summer mode shall be activated when outdoor air temperature exceeds 70°F and shall continue uninterrupted until deactivated when outdoor air temperature falls below 45°F. During summer mode, the occupied cooling set point shall be set 1°F higher than normal, and the occupied heating set point shall be reset 2°F lower than normal.
2. Night flush shall be activated when all of the following conditions exist:
i. Summer mode is active in accordance with item (c)(1).
ii. Outdoor air temperature is 5°F or more below indoor average zone temperature.
iii. Indoor average zone temperature is greater than morning occupied heating set point.
iv. In climate zones 0A through 3A, outdoor dew point is below 50°F, or outdoor air enthalpy is less than indoor air enthalpy.
v. Local time is between 10:00 pm and 6:00 am.
3. When night flush is active, automatic night flush controls shall operate outdoor air economizers at low fan speed not exceeding 66% during the unoccupied period with mechanical cooling and heating locked out.
d. The project shall demonstrate a contractual obligation for post occupancy commissioning and control tuning in the spring or fall season to tune the summer mode activation set points and occupied heating set point, or other algorithms to achieve minimal morning heating due to night flush activation, while maintaining comfort conditions. Commissioning shall include monitoring of time-series space temperature, heating, and cooling operation to demonstrate both night cooling and minimization of morning heating along with monitoring of post-tuning operation to verify tuned parameters. Operating manuals shall include recommendations for tuned parameters and narrative training for operating staff on night flush automated settings.
Informative Note: The simplified night flush sequence described will operate in summer mode below the 70°F outdoor air trigger temperature until outdoor air of 45°F is reached and summer mode is deactivated. Summer mode is reestablished when the outdoor air rises above 70°F again. These set points need to be tuned under actual occupancy conditions, as building load characteristics vary. Other strategies may be implemented that cool the space below the heating set point and adjust the morning heating set point to avoid morning reheating.
ASHRAE20220132
11.4 Mandatory Provisions (Not used)
11.5 Prescriptive Compliance Path. Reserved.
11.6 Alternative Compliance Path (Not used)
11.7 Submittals
11.7.1 General.
Compliance documentation and supplemental information shall be submitted in accordance with Section 4.2.2 of this standard.
11.7.2 Permit Application Documentation.
Construction documents shall list which credits were used to meet the requirements of Section 11.5 for this project.
11.7.3 Completion Requirements.
Construction documents shall require that equipment, controls, or sys- tems installed to meet the requirements of Section 11.5 shall meet completion requirements as specified in Sections 5.7.3, 6.7.3, 7.7.3, 8.7.3, 9.7.3, and 10.7.3.
11.8 Product Information (Not used)
11.9 Verification, Testing, and Commissioning.
Building envelope components, equipment, controls, or systems installed to meet the requirements of Section 11.5 shall meet verification, testing, and commissioning requirements as specified in Sections 5.9, 6.9, 7.9, 8.9, 9.9, and 10.9.
Section 12- ENERGY COST BUDGET METHOD.
Section 12- Delete Section 12 in its entirety and add new Section 12 to read as follows:
12. Reserved.
Normative Appendix A- Rated R-Value of Insulation and Assembly U-Factor, C-Factor, and F-Factor Determinations.
Table A3.3.3. 1 Assembly U-factors for Steel-Frame Walls by Stud Spacing and Framing Factora,b
Table A3.3.3. 1 - Delete Table A3.3.3. 1 in its entirety and add new Table A3.3.3. 1 to read as follows:
Table A3.3.3. 1 Assembly U-factors for Steel-Frame Walls by Stud Spacing and Framing Factora,b
|
Cavity Insulation Value |
Base Wall U-factor at Framing |
Overall U-Factor for Assembly of Base Wall Plus Continuous Insulation (Uninterrupted by Framing or Furring) |
|
|
|
Rated R-Value of Continuous Insulation |
|
|
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
20 |
25 |
30 |
35 |
40 |
|
Steel Framing at 12 in. on Center (25% Framing Factor)-includes framing for tracks, blocking, headers, and jamb and king studs |
|
0.9 |
0.351 |
0.260 |
0.206 |
0.171 |
0.146 |
0.127 |
0.113 |
0.102 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
|
|
11 |
0.156 |
0.135 |
0.119 |
0.106 |
0.096 |
0.088 |
0.081 |
0.075 |
0.069 |
0.065 |
0.061 |
0.057 |
0.054 |
0.052 |
0.049 |
0.047 |
0.038 |
0.032 |
0.027 |
0.024 |
0.022 |
|
|
13 |
0.149 |
0.130 |
0.115 |
0.103 |
0.094 |
0.086 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.057 |
0.053 |
0.051 |
0.048 |
0.046 |
0.037 |
0.032 |
0.027 |
0.024 |
0.021 |
|
|
15 |
0.144 |
0.126 |
0.112 |
0.101 |
0.092 |
0.084 |
0.077 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.046 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
19 |
0.137 |
0.121 |
0.108 |
0.097 |
0.089 |
0.081 |
0.075 |
0.070 |
0.065 |
0.061 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
21 |
0.135 |
0.119 |
0.106 |
0.096 |
0.088 |
0.080 |
0.074 |
0.069 |
0.065 |
0.061 |
0.057 |
0.054 |
0.051 |
0.049 |
0.047 |
0.045 |
0.036 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
25 |
0.131 |
0.116 |
0.104 |
0.094 |
0.086 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.048 |
0.046 |
0.044 |
0.036 |
0.031 |
0.027 |
0.023 |
0.021 |
|
|
30 |
0.127 |
0.113 |
0.101 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.046 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
Steel Framing at 16 in. on Center (22% Framing Factor)-includes framing for tracks, blocking, headers, and jamb and king studs |
|
0.9 |
0.350 |
0.259 |
0.206 |
0.171 |
0.146 |
0.127 |
0.113 |
0.101 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
|
|
11 |
0.148 |
0.129 |
0.114 |
0.103 |
0.093 |
0.085 |
0.078 |
0.073 |
0.068 |
0.063 |
0.060 |
0.056 |
0.053 |
0.051 |
0.048 |
0.046 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
13 |
0.141 |
0.124 |
0.110 |
0.099 |
0.090 |
0.083 |
0.076 |
0.071 |
0.066 |
0.062 |
0.059 |
0.055 |
0.052 |
0.050 |
0.047 |
0.045 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
15 |
0.136 |
0.120 |
0.107 |
0.097 |
0.088 |
0.081 |
0.075 |
0.070 |
0.065 |
0.061 |
0.058 |
0.054 |
0.052 |
0.049 |
0.047 |
0.045 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
19 |
0.129 |
0.114 |
0.102 |
0.093 |
0.085 |
0.078 |
0.073 |
0.068 |
0.063 |
0.060 |
0.056 |
0.053 |
0.051 |
0.048 |
0.046 |
0.044 |
0.036 |
0.031 |
0.026 |
0.023 |
0.021 |
|
|
21 |
0.126 |
0.112 |
0.100 |
0.091 |
0.084 |
0.077 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.046 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
25 |
0.122 |
0.108 |
0.098 |
0.089 |
0.082 |
0.076 |
0.070 |
0.066 |
0.062 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.043 |
0.035 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
30 |
0.118 |
0.105 |
0.095 |
0.087 |
0.080 |
0.074 |
0.069 |
0.065 |
0.061 |
0.057 |
0.054 |
0.051 |
0.049 |
0.047 |
0.044 |
0.043 |
0.035 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
Steel Framing at 24 in. on Center (18% Framing Factor)-includes framing for tracks, blocking, headers, and jamb and king studs |
|
0.9 |
0.348 |
0.258 |
0.205 |
0.170 |
0.145 |
0.127 |
0.113 |
0.101 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
|
|
11 |
0.137 |
0.121 |
0.108 |
0.097 |
0.089 |
0.081 |
0.075 |
0.070 |
0.065 |
0.061 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
13 |
0.130 |
0.115 |
0.103 |
0.093 |
0.085 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.056 |
0.053 |
0.051 |
0.048 |
0.046 |
0.044 |
0.036 |
0.031 |
0.027 |
0.023 |
0.021 |
|
|
15 |
0.124 |
0.110 |
0.099 |
0.090 |
0.083 |
0.077 |
0.071 |
0.066 |
0.062 |
0.059 |
0.055 |
0.052 |
0.050 |
0.047 |
0.045 |
0.043 |
0.036 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
19 |
0.116 |
0.104 |
0.094 |
0.086 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.035 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
21 |
0.113 |
0.102 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.046 |
0.044 |
0.042 |
0.035 |
0.030 |
0.026 |
0.023 |
0.020 |
|
|
25 |
0.109 |
0.098 |
0.089 |
0.082 |
0.076 |
0.070 |
0.066 |
0.062 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.043 |
0.041 |
0.034 |
0.029 |
0.026 |
0.023 |
0.020 |
|
|
30 |
0.105 |
0.095 |
0.086 |
0.080 |
0.074 |
0.069 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.041 |
0.034 |
0.029 |
0.025 |
0.022 |
0.020 |
|
|
Steel Framing at 12 in. on Center (18% Framing Factor)-includes only studs at 12 in. on center and top and bottom tracks |
|
0.9 |
0.348 |
0.258 |
0.205 |
0.170 |
0.145 |
0.127 |
0.113 |
0.101 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
|
|
11 |
0.137 |
0.121 |
0.108 |
0.097 |
0.089 |
0.081 |
0.075 |
0.070 |
0.065 |
0.061 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
|
|
13 |
0.130 |
0.115 |
0.103 |
0.093 |
0.085 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.056 |
0.053 |
0.051 |
0.048 |
0.046 |
0.044 |
0.036 |
0.031 |
0.027 |
0.023 |
0.021 |
|
|
15 |
0.124 |
0.110 |
0.099 |
0.090 |
0.083 |
0.077 |
0.071 |
0.066 |
0.062 |
0.059 |
0.055 |
0.052 |
0.050 |
0.047 |
0.045 |
0.043 |
0.036 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
19 |
0.116 |
0.104 |
0.094 |
0.086 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.035 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
21 |
0.113 |
0.102 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.046 |
0.044 |
0.042 |
0.035 |
0.030 |
0.026 |
0.023 |
0.020 |
|
|
25 |
0.109 |
0.098 |
0.089 |
0.082 |
0.076 |
0.070 |
0.066 |
0.062 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.043 |
0.041 |
0.034 |
0.029 |
0.026 |
0.023 |
0.020 |
|
|
30 |
0.105 |
0.095 |
0.086 |
0.080 |
0.074 |
0.069 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.041 |
0.034 |
0.029 |
0.025 |
0.022 |
0.020 |
|
|
Steel Framing at 16 in. on Center (14% Framing Factor)-includes only studs at 16 in. on center and top and bottom tracks |
|
0.9 |
0.346 |
0.257 |
0.204 |
0.170 |
0.145 |
0.127 |
0.112 |
0.101 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
|
|
11 |
0.125 |
0.111 |
0.100 |
0.091 |
0.083 |
0.077 |
0.071 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.045 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
13 |
0.117 |
0.105 |
0.095 |
0.087 |
0.080 |
0.074 |
0.069 |
0.064 |
0.061 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.043 |
0.035 |
0.030 |
0.026 |
0.023 |
0.021 |
|
|
15 |
0.111 |
0.100 |
0.091 |
0.083 |
0.077 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.045 |
0.044 |
0.042 |
0.035 |
0.029 |
0.026 |
0.023 |
0.020 |
|
|
19 |
0.103 |
0.093 |
0.085 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.056 |
0.053 |
0.051 |
0.048 |
0.046 |
0.044 |
0.042 |
0.040 |
0.034 |
0.029 |
0.025 |
0.022 |
0.020 |
|
|
21 |
0.100 |
0.091 |
0.083 |
0.077 |
0.071 |
0.066 |
0.062 |
0.059 |
0.055 |
0.053 |
0.050 |
0.048 |
0.045 |
0.043 |
0.042 |
0.040 |
0.033 |
0.029 |
0.025 |
0.022 |
0.020 |
|
|
25 |
0.095 |
0.087 |
0.080 |
0.074 |
0.069 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.041 |
0.039 |
0.033 |
0.028 |
0.025 |
0.022 |
0.020 |
|
|
30 |
0.090 |
0.083 |
0.077 |
0.071 |
0.066 |
0.062 |
0.059 |
0.055 |
0.052 |
0.050 |
0.047 |
0.045 |
0.043 |
0.042 |
0.040 |
0.038 |
0.032 |
0.028 |
0.024 |
0.022 |
0.020 |
|
|
Steel Framing at 24 in. on Center (10% Framing Factor)-includes only studs at 24 in. on center and top and bottom tracks |
|
0.9 |
0.344 |
0.256 |
0.204 |
0.169 |
0.145 |
0.126 |
0.112 |
0.101 |
0.092 |
0.084 |
0.077 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.044 |
0.036 |
0.030 |
0.026 |
0.023 |
|
|
11 |
0.113 |
0.101 |
0.092 |
0.084 |
0.078 |
0.072 |
0.067 |
0.063 |
0.059 |
0.056 |
0.053 |
0.050 |
0.048 |
0.046 |
0.044 |
0.042 |
0.035 |
0.030 |
0.026 |
0.023 |
0.020 |
|
|
13 |
0.104 |
0.094 |
0.086 |
0.079 |
0.073 |
0.068 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.041 |
0.034 |
0.029 |
0.025 |
0.022 |
0.020 |
|
|
15 |
0.098 |
0.089 |
0.082 |
0.076 |
0.070 |
0.066 |
0.062 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.043 |
0.041 |
0.040 |
0.033 |
0.028 |
0.025 |
0.022 |
0.020 |
|
|
19 |
0.088 |
0.081 |
0.075 |
0.070 |
0.065 |
0.061 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.043 |
0.041 |
0.040 |
0.038 |
0.032 |
0.028 |
0.024 |
0.022 |
0.019 |
|
|
21 |
0.085 |
0.078 |
0.073 |
0.068 |
0.063 |
0.060 |
0.056 |
0.053 |
0.051 |
0.048 |
0.046 |
0.044 |
0.042 |
0.040 |
0.039 |
0.037 |
0.031 |
0.027 |
0.024 |
0.021 |
0.019 |
|
|
25 |
0.080 |
0.074 |
0.069 |
0.064 |
0.060 |
0.057 |
0.054 |
0.051 |
0.049 |
0.046 |
0.044 |
0.042 |
0.041 |
0.039 |
0.038 |
0.036 |
0.031 |
0.027 |
0.024 |
0.021 |
0.019 |
|
|
30 |
0.075 |
0.070 |
0.065 |
0.061 |
0.058 |
0.055 |
0.052 |
0.049 |
0.047 |
0.045 |
0.043 |
0.041 |
0.039 |
0.038 |
0.037 |
0.035 |
0.030 |
0.026 |
0.023 |
0.021 |
0.019 |
|
|
|
|
Overall U-Factor for Assembly of Base Wall Plus Continuous Insulation (Uninterrupted by Framing or Furring) |
|
Cavity Insulation Value |
Base Wall U-factor at Framing |
Rated R-Value of Continuous Insulation |
|
|
|
0.18 |
0.35 |
0.53 |
0.70 |
0.88 |
1.06 |
1.23 |
1.41 |
1.59 |
1.76 |
1.94 |
2.11 |
2.29 |
2.47 |
2.64 |
3.52 |
4.40 |
5.28 |
6.16 |
7.04 |
|
Steel Framing at 300 mm on Center (25% Framing Factor)-includes framing for tracks, blocking, headers, and jamb and king studs |
|
0.16 |
1.99 |
1.47 |
1.17 |
0.97 |
0.83 |
0.72 |
0.64 |
0.58 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
|
|
1.94 |
0.89 |
0.77 |
0.68 |
0.60 |
0.55 |
0.50 |
0.46 |
0.42 |
0.39 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.21 |
0.18 |
0.16 |
0.14 |
0.12 |
|
|
2.29 |
0.85 |
0.74 |
0.65 |
0.59 |
0.53 |
0.49 |
0.45 |
0.41 |
0.39 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.21 |
0.18 |
0.15 |
0.14 |
0.12 |
|
|
2.64 |
0.82 |
0.72 |
0.64 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.28 |
0.27 |
0.26 |
0.21 |
0.18 |
0.15 |
0.14 |
0.12 |
|
|
3.35 |
0.78 |
0.69 |
0.61 |
0.55 |
0.50 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.21 |
0.18 |
0.15 |
0.13 |
0.12 |
|
|
3.70 |
0.76 |
0.67 |
0.60 |
0.54 |
0.50 |
0.46 |
0.42 |
0.39 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.21 |
0.18 |
0.15 |
0.13 |
0.12 |
|
|
4.40 |
0.74 |
0.66 |
0.59 |
0.53 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.21 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
5.28 |
0.72 |
0.64 |
0.58 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
Steel Framing at 400 mm on Center (22% Framing Factor)-includes framing for tracks, blocking, headers, and jamb and king studs |
|
0.16 |
1.98 |
1.47 |
1.17 |
0.97 |
0.83 |
0.72 |
0.64 |
0.58 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
|
|
1.94 |
0.84 |
0.73 |
0.65 |
0.58 |
0.53 |
0.48 |
0.45 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.21 |
0.18 |
0.15 |
0.14 |
0.12 |
|
|
2.29 |
0.80 |
0.70 |
0.63 |
0.56 |
0.51 |
0.47 |
0.43 |
0.40 |
0.38 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.21 |
0.18 |
0.15 |
0.13 |
0.12 |
|
|
2.64 |
0.77 |
0.68 |
0.61 |
0.55 |
0.50 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.21 |
0.18 |
0.15 |
0.13 |
0.12 |
|
|
3.35 |
0.73 |
0.65 |
0.58 |
0.53 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
3.70 |
0.71 |
0.63 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.33 |
0.32 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
4.40 |
0.69 |
0.62 |
0.56 |
0.51 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
5.28 |
0.67 |
0.60 |
0.54 |
0.49 |
0.45 |
0.42 |
0.39 |
0.37 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
Steel Framing at 600 mm on Center (18% Framing Factor)-includes framing for tracks, blocking, headers, and jamb and king studs |
|
0.16 |
1.97 |
1.46 |
1.16 |
0.97 |
0.83 |
0.72 |
0.64 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
|
|
1.94 |
0.78 |
0.68 |
0.61 |
0.55 |
0.50 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.21 |
0.18 |
0.15 |
0.13 |
0.12 |
|
|
2.29 |
0.74 |
0.65 |
0.58 |
0.53 |
0.48 |
0.45 |
0.41 |
0.39 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
2.64 |
0.70 |
0.63 |
0.56 |
0.51 |
0.47 |
0.43 |
0.40 |
0.38 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
3.35 |
0.66 |
0.59 |
0.53 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
3.70 |
0.64 |
0.58 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
4.40 |
0.62 |
0.56 |
0.51 |
0.47 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.24 |
0.23 |
0.19 |
0.17 |
0.14 |
0.13 |
0.12 |
|
|
5.28 |
0.59 |
0.54 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.23 |
0.19 |
0.16 |
0.14 |
0.13 |
0.11 |
|
|
Cavity Insulation Value |
Base Wall U-factor at Framing |
Overall U-Factor for Assembly of Base Wall Plus Continuous Insulation (Uninterrupted by Framing or Furring) |
|
|
|
Rated R-Value of Continuous Insulation |
|
|
|
0.18 |
0.35 |
0.53 |
0.70 |
0.88 |
1.06 |
1.23 |
1.41 |
1.59 |
1.76 |
1.94 |
2.11 |
2.29 |
2.47 |
2.64 |
3.52 |
4.40 |
5.28 |
6.16 |
7.04 |
|
Steel Framing at 300 mm on Center (18% Framing Factor)-includes only studs at 300 mm on center and top and bottom tracks |
|
0.16 |
1.97 |
1.46 |
1.16 |
0.97 |
0.83 |
0.72 |
0.64 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
|
|
1.94 |
0.78 |
0.68 |
0.61 |
0.55 |
0.50 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.21 |
0.18 |
0.15 |
0.13 |
0.12 |
|
|
2.29 |
0.74 |
0.65 |
0.58 |
0.53 |
0.48 |
0.45 |
0.41 |
0.39 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
2.64 |
0.70 |
0.63 |
0.56 |
0.51 |
0.47 |
0.43 |
0.40 |
0.38 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
3.35 |
0.66 |
0.59 |
0.53 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
3.70 |
0.64 |
0.58 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
4.40 |
0.62 |
0.56 |
0.51 |
0.47 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.24 |
0.23 |
0.19 |
0.17 |
0.14 |
0.13 |
0.12 |
|
|
5.28 |
0.59 |
0.54 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.23 |
0.19 |
0.16 |
0.14 |
0.13 |
0.11 |
|
|
Steel Framing at 400 mm on Center (14% Framing Factor)-includes only studs at 400 mm on center and top and bottom tracks |
|
0.16 |
1.96 |
1.46 |
1.16 |
0.96 |
0.82 |
0.72 |
0.64 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
|
|
1.94 |
0.71 |
0.63 |
0.57 |
0.52 |
0.47 |
0.44 |
0.41 |
0.38 |
0.36 |
0.33 |
0.32 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
2.29 |
0.67 |
0.60 |
0.54 |
0.49 |
0.45 |
0.42 |
0.39 |
0.37 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
2.64 |
0.63 |
0.57 |
0.52 |
0.47 |
0.44 |
0.41 |
0.38 |
0.36 |
0.33 |
0.32 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
3.35 |
0.58 |
0.53 |
0.48 |
0.45 |
0.41 |
0.39 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.24 |
0.23 |
0.19 |
0.16 |
0.14 |
0.13 |
0.11 |
|
|
3.70 |
0.57 |
0.51 |
0.47 |
0.44 |
0.40 |
0.38 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.24 |
0.23 |
0.19 |
0.16 |
0.14 |
0.13 |
0.11 |
|
|
4.40 |
0.54 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.23 |
0.22 |
0.19 |
0.16 |
0.14 |
0.12 |
0.11 |
|
|
5.28 |
0.51 |
0.47 |
0.43 |
0.40 |
0.38 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.25 |
0.24 |
0.23 |
0.22 |
0.18 |
0.16 |
0.14 |
0.12 |
0.11 |
|
|
Steel Framing at 600 mm on Center (10% Framing Factor)-includes only studs at 600 mm on center and top and bottom tracks |
|
0.16 |
1.95 |
1.45 |
1.16 |
0.96 |
0.82 |
0.72 |
0.64 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.25 |
0.20 |
0.17 |
0.15 |
0.13 |
|
|
1.94 |
0.64 |
0.57 |
0.52 |
0.48 |
0.44 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.24 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
|
|
2.29 |
0.59 |
0.54 |
0.49 |
0.45 |
0.42 |
0.39 |
0.36 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.23 |
0.19 |
0.16 |
0.14 |
0.13 |
0.11 |
|
|
2.64 |
0.55 |
0.51 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.30 |
0.28 |
0.27 |
0.26 |
0.24 |
0.23 |
0.22 |
0.19 |
0.16 |
0.14 |
0.13 |
0.11 |
|
|
3.35 |
0.50 |
0.46 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.24 |
0.23 |
0.22 |
0.22 |
0.18 |
0.16 |
0.14 |
0.12 |
0.11 |
|
|
3.70 |
0.48 |
0.45 |
0.41 |
0.38 |
0.36 |
0.34 |
0.32 |
0.30 |
0.29 |
0.27 |
0.26 |
0.25 |
0.24 |
0.23 |
0.22 |
0.21 |
0.18 |
0.15 |
0.14 |
0.12 |
0.11 |
|
|
4.40 |
0.45 |
0.42 |
0.39 |
0.37 |
0.34 |
0.32 |
0.31 |
0.29 |
0.28 |
0.26 |
0.25 |
0.24 |
0.23 |
0.22 |
0.21 |
0.21 |
0.17 |
0.15 |
0.13 |
0.12 |
0.11 |
|
|
5.28 |
0.43 |
0.40 |
0.37 |
0.35 |
0.33 |
0.31 |
0.29 |
0.28 |
0.27 |
0.25 |
0.24 |
0.23 |
0.22 |
0.22 |
0.21 |
0.20 |
0.17 |
0.15 |
0.13 |
0.12 |
0.11 |
|
a. Refer to Section A9.2(b)(3)(i) for calculation method used to generate table values.
b. The cavity insulation rated RSI-value of 0.16 corresponds to no cavity insulation.
Section A10.2 Assembly U-Factor Adjustment for Simulation of Thermal Bridges.
Section A10.2 - Revise Section A10.2 to read as follows:
A10.2 Assembly U-Factor Adjustment for Simulation of Thermal Bridges.
The effect of thermal bridges on assembly thermal performance shall be calculated and documented.
Section A10.2.1 Calculations.
Section A10.2.1 - Revise Section A10.2.1 to read as follows:
A10.2.1 Calculations
For the purpose of incorporating the effects of thermal bridges in simulations as required by Normative Appendix C Normative Appendix G, where a thermal bridge is not modeled as a separate element, the clear-field U-factors of modeled assemblies shall be modified in accordance with Equation A10.2. This modification shall be achieved in the simulation model by altering the conductance value assigned to any one or more insulation layers within the modeled assembly without altering the properties of modeled building material layers.
Utot = [(∑ψi × Li) + (∑χj × nj)]/Atotal) + Uo} (Equation A10.2)
Where
Utot = overall U-factor, including the effect of linear thermal bridges and point thermal bridges not included in the assembly clear-field U-factor (Uo)-factor, Btu/(h•ft2•°F)
Uo = clear-field U-factor of the construction assembly as determined in accordance with Section 5, Btu/(h•ft2•°F)
Atotal = total opaque projected surface area of the construction assembly, ft2
ψi = psi-factor, thermal transmittance for each type of linear thermal bridge, Btu/(h•ft2•°F)
Li = length of a particular linear thermal bridge as measured on the outside surface of the building envelope, ft2
χi = chi-factor, thermal transmittance for each detail type of point thermal bridge, Btu/(h•°F)
ni = number of occurrences a particular type of point thermal bridge
Section A10.2.2 Performance Thermal Bridge Mitigation for Prescriptive Compliance.
Section A10.2.2 - Add new Section A10.2.2, Section A10.2.2.1, Section A10.2.2.2 and Table A10.2.2.2 to read as follows:
A10.2.2 Performance Thermal Bridge Mitigation for Prescriptive Compliance.
As an alternate compliance option to Section 5.5.5 Linear Thermal Bridges and Point Thermal Bridges, wall assemblies shall be permitted to comply with A10.2.2.1 and A10.2.2.2.
A10.2.2.1 Thermal bridge details.
Psi-factors and chi-factors for thermal bridges shall be determined in accordance with Normative Appendix A, Section A10. The following intersections shall be evaluated for thermal bridges and be detailed in construction documents:
1. Structural framing and members.
2. Cladding attachment systems
3. Assembly intersections:
a. Roof edge, parapet
b. Intermediate floor to wall intersection
c. Intermediate floor balcony or overhang to opaque wall intersection
d. Intermediate floor balcony in contact with vertical fenestration
e. Cladding support
f. Wall to vertical fenestration intersection
Details shall include the total length of each linear thermal bridge, corresponding psi-factors and source. Details shall include point thermal bridges, including their cross-sectional area and quantity of each type, corresponding chi-factors and source.
Exception: HVAC or electrical system point thermal bridges totaling less than 12 square inches (7742 mm2) of cross-sectional area at exposure.
A10.2.2.2 Overall U-factor.
Clear-field U-factors of modeled assemblies shall be modified in accordance with Equation A10.2.1. The overall U-factor permitted shall be not greater than the U-factor values in Table A10.2.2.2 by wall type and occupancy.
TABLE A10.2.2.2 THERMAL BRIDGE ALLOWANCES
|
CLIMATE ZONE |
All Climate Zones |
|
|
Nonresidential |
Residential |
|
Walls, above grade |
|
Mass |
0.080 |
0.077 |
|
Metal building |
0.075 |
0.074 |
|
Steel framed |
0.071 |
0.070 |
|
Wood framed and other |
0.051 |
0.052 |
Normative Appendix C- Methodology for Building Envelope Trade-Off Option in Section 5.6.
Section C1.1 At the Building Level.
Section C1.1 - Revise Section C1.1 to read as follows:
C1.1 At the Building Level
The floor area, broken down by space conditioning categories and building area type, shall be specified. Each building area type shall be chosen from Table 9.5.1. For alterations and additions, portions of the existing building where the envelope is not altered shall be excluded.
Section C1.2.7 For Thermal Bridges Identified in Section 5.5.5.
Section C1.2.7 - Revise Section C1.2.7 to read as follows:
C1.2.7 For Thermal Bridges Identified in Section 5.5.5.
Thermal bridge inputs and specifications shall be individually identified for the thermal bridges indicated in Section 5.5.5 according to one of the following:
a. Where all of the individual thermal bridges in the assembly comply with one of the requirements of Sections 5.5.5.1 through 5.5.5.5, no additional inputs shall be required.
b. Where at least one thermal bridge in the assembly does not comply with one or more of the requirements of Sections 5.5.5.1 through 5.5.5.5, the linear thermal bridge type or point thermal bridge type, length or count, the assembly interrupted by each thermal bridge in the assembly, and the psi-factor or chi-factor shall be specified. The overall assembly U-factor shall be determined in accordance with Section A10.2.1.
c. Where Section 5.5.5 and Sections 5.5.5.1 through 5.5.5.5, including exceptions, are not applicable to all of the individual thermal bridges in the assembly, no additional inputs shall be required.
Section C3.1.2.
Section C3.1.2 - Revise Section C3.1.2to read as follows:
C3.1.2
The simulation program shall have the ability to determine the proposed envelope performance factor and base envelope performance factor.
Informative Note
Neither the proposed envelope performance factor nor the base envelope performance factor are predictions of actual energy consumption or costs for the proposed design after construction. Actual experience will differ from these calculations due to variations such as occupancy, building operation and maintenance, weather, energy use not covered by this procedure, HVAC and lighting system design differing from defaults prescribed in this appendix, and the precision of the calculation tool.
Section C3.3.
Section C3.3 - Revise Section C3.3 to read as follows:
C3.3 [RESERVED]
Section C3.4 Compliance Calculations.
Section C3.4 - Revise Section C3.4 to read as follows:
C3.4 Compliance Calculations
The proposed envelope performance factor and base envelope performance factor shall be calculated using the same
a. simulation program,
b. climatic data, and
The proposed envelope performance factor and base envelope performance factor shall be expressed in units of site energy.
Section C3.5.5.3 Air Leakage.
Section C3.5.5.3 - Revise the first sentence of Section C3.5.5.3 to read as follows:
The measured air leakage rate of the building envelope (I75Pa) at a pressure differential of 75 Pa (0.30 in. of water) shall be 0.20 cfm/ft2 of building envelope area when air leakage compliance is based on whole-building pressurization testing.
Section C3.5.5.4 Thermal Bridges.
Section C3.5.5.4 - Revise Section C3.5.5.4 to read as follows:
C3.5.5.4 Thermal Bridges.
Linear and point thermal bridges in the proposed design shall be one of the following:
a. Not modeled where option (a) or (c) is selected in Section C1.2.7.
b. Entered as individual thermal bridge inputs of length or count where option (b) is selected in Section C1.2.7 and addressed as follows:
1. Individual thermal bridges in the proposed design that are indicated to comply with the requirements of Sections 5.5.5.1 through 5.5.5.5 shall be modeled with the user-defined psi-factor or chi-factors or the default values from Table A10.1.
2. Individual thermal bridges in the proposed design that are indicated to not comply with the requirements of Sections 5.5.5.1 through 5.5.5.5 shall be modeled with the user-defined psi-factor or chi-factors or the unmitigated values from Table A10.1.
3. Individual thermal bridges in the proposed design that are indicated to be not applicable with the requirements of Sections 5.5.5.1 through 5.5.5.5 need not be modeled.
Section C3.5.8 HVAC Systems.
Section C3.5.8 - Revise Section C3.5.8 to read as follows:
C3.5.8 HVAC Systems
One HVAC system shall be provided for each thermal zone and shall have the following characteristics:
a. Constant-volume fan control.
b. Electrically provided cooling with COPnfcooling=3.73, based on requirements for heat pumps with cooling capacity between 65,000 Btu/h and 135,000 Btu/h.
c. A packaged electric air-source heat pump with packaged electric air-source heat pump with the CCOPnfheating =3.66 and electric auxiliary heat. The system shall be controlled to energize auxiliary heat only when outdoor air temperature is less than 40°F (4.4°C). The air-source heat pump shall be modeled to continue to operate while auxiliary heat is energized. COPnfcooling and COPnfheating are the packaged HVAC equipment cooling and heating energy efficiency, respectively, which excludes supply fan power.
d. The ventilation rate for each building area type shall be consistent with the ventilation rate in the building envelope trade-off schedules and loads for the applicable building area type.
e. Air economizers. The high-limit shutoff shall be “Fixed Dry Bulb” type as described in Table 6.5.1.1.3.
f. System design supply air rates shall be based on a supply-air-to-room-air temperature difference of 20°F in cooling.
g. System capacities used in the annual simulation shall be 1.25 and 1.15 times the heating and cooling capacities, respectively, determined by the sizing simulations.
h. Fans shall run continuously whenever the space is occupied. The fan power shall be 0.3 W/cfm, and the fan energy shall be modeled explicitly.
Section C3.6 Calculation of Base Envelope Performance Factor.
Section C3.6 - Revise Section C3.6 to read as follows:
C3.6 Calculation of Base Envelope Performance Factor
The simulation model for calculating the base envelope performance factor shall modify the simulation model for calculating the proposed envelope performance factor as follows:
a. All opaque assemblies shall conform with assemblies detailed in Normative Appendix A and be modeled with the U-factor not greater than that required in Section 5.5.3 for the appropriate, space- conditioning category, and climate zone and the following type of construction:
1. Roofs-Insulation entirely above deck (A2.2).
2. Above-grade walls - steel-framed (A3.3)
3. Below-grade walls-Concrete block (A4).
4. Floors-Steel-joist (A5.3).
5. Slab-on-grade floors shall match the F-factor for unheated slabs from the same tables (A6).
6. Opaque door types shall be of the same type of construction as the proposed design and conform to the U-factor requirements from the same tables (A7).
b. Thermal bridges:
1. Where option (a) is selected in Section C1.2.7 for all individual thermal bridges in the assembly, no modifications to the assembly U-factors are required.
2. Where option (b) is selected in Section C1.2.7 for one or more thermal bridges in the assembly, the U-factor of the assembly interrupted shall be modeled as the sum of the thermal bridge allowance value in Table A10.2.2.2 and the clear field thermal transmittance for the appropriate class of construction in Section C3.6 (a).5.5.5.5 shall be modeled in the simulation model for calculating the proposed envelope performance. Where the balcony length in the proposed design is greater than allowed by Section 5.5.5.2.2, the area shall be reduced proportionally along each exposure until the limit set in Section 5.5.5.2.2 is met.
3. Where option (c) is selected in Section C1.2.7 for all individual thermal bridges in the assembly, no modifications to the assembly U-factors are required.
b. c. The exterior roof surfaces shall be modeled with a solar reflectance and thermal emittance as required in Section 5.5.3.1.4 (a). All other roofs, including roofs exempted from the requirements in Section 5.5.3.1.4, shall be modeled the same as in the proposed design. The above-grade wall surfaces of buildings shall be modeled with a solar reflectance and thermal emittance as required in Section 5.5.3.2.2 and Section 5.5.3.2.2(a). All other above-grade walls, including those exempt from the requirements in Section 5.5.3.2.2, shall be modeled the same as the proposed design.
d. Fenestration shall be assumed to be flush with the wall or roof. Fenestration U-factor and SHGC shall be the maximum allowed for the appropriate class of construction, space conditioning category, and climate zone in accordance with Section 5.5.4. Where there is no SHGC requirement, the SHGC shall be equal to 0.40 for all vertical fenestration and 0.55 for skylights. The VT for fenestration in the base envelope design shall be equal to 1.10 times the SHGC. Vertical fenestration area for new buildings or additions shall be modeled as required in Table G3.1, Baseline Building Performance Column #5 (e).
Exception: For multifamily buildings, vertical fenestration area shall equal that in the proposed design or 30% of gross above-grade wall area, whichever is smaller.
Where the fenestration area facing west or east of the proposed design exceeds the area limit set in Section 5.5.4.5, the baseline building performance shall be generated by simulating the building with its actual orientation and again after rotating the entire building 90, 180, and 270 degrees, and averaging the results of the four simulations
e. Manually operated interior shades shall be modeled on all vertical fenestration as described in Section C3.5.5.1. Permanent shading devices, such as fins and overhangs, shall not be modeled.
f. Daylight areas and photosensor locations shall be modeled as described in Section C3.5.3 after reducing the fenestration area as described in Section C3.6(d).
g. The air leakage rate of the building envelope (I75Pa) at a fixed building pressure differential of 75 Pa shall be 0.20 cfm/ft2 of building envelope area for new construction and 0.40 cfm/ft2 of building envelope area for existing buildings. The air leakage rate shall be converted to the simulation program inputs using the same methodology as was used for the proposed envelope performance factor.
Exceptions to (a) - (d): Alterations to the building envelope shall comply with the requirements of Section 5.1.4. Existing insulation and fenestration that is not altered shall be modeled the same as in the proposed envelope performance factor.
Normative Appendix G- Performance Rating Method.
Section G1.1.1 Site Energy Compliance Alternative
Section G1.1.1 - Delete Section G1.1.1 in its entirety.
Section G1.2.1 Mandatory Provisions.
Section G1.2.1 - Revise Section G1.2.1 to read as follows:
G1.2.1 Mandatory Provisions
The proposed building design shall comply with all of the following:
a. Sections 5.2.1, 6.2.1, 7.2.1, 8.2.1, 9.2.1, and 10.2.1, and load management credit requirements according to Section 11.1.1.
b. Interior lighting power shall not exceed by more than 10% the interior lighting power allowance determined using either
1. Tables 9.5.2.1-1 and 9.5.2.1-2 and the methodology described in Section 9.5.2, or
2. Table 9.5.1 and the methodology described in Section 9.5.1.
c. Energy efficiency levels of installed components and systems shall meet or exceed the efficiency levels used to calculate the proposed building performance.
d. For new buildings one of the following shall be met:
1. The building envelope complies with Section 5.5, “Prescriptive Building Envelope Compliance Path.”
2. Using Section 5.6, “Building Envelope Trade-Off Compliance Path,” the proposed envelope performance factor shall not exceed the base envelope performance factor by more than 8.1% in multifamily residential, hotel/motel, and dormitory building area types.
For all other building area types, the limit shall be 2.5%
For buildings with both residential and nonresidential occupancies, the limit shall be based on the area- weighted average of the gross conditioned floor area.
e. Verification, testing, and commissioning requirements of Section 4.2.5 shall be met.
f. Proposed building systems, controls, or building envelope documented in Section G1.3(c) that do not have criteria in Sections 5 through 10 shall have verification or testing to document proper installation and operation in accordance with Section 4.2.5.
Section G1.2.2 Performance Rating Calculation.
Section G1.2.2 - Revise Section G1.2.2 to read as follows:
G1.2.2 Performance Rating Calculation
The performance of the proposed design is calculated in accordance with provisions of this appendix using the following formulas in Sections G1.2.2.1 and G1.2.2.2.
Both the proposed building performance and the baseline building performance shall include all end-use load components within and associated with the building.
Exception to G1.2.2
Energy used to recharge or refuel vehicles that are used for off-building site transportation purposes shall not be modeled in the baseline building performance or the proposed building performance.
Informative Note:
Neither the proposed building performance nor the baseline building performance are predictions of actual energy consumption or costs for the proposed design after construction. Actual experience will differ from these calculations due to variations such as occupancy, building operation and maintenance, weather, energy use not covered by this procedure, changes in energy rates between design of the building and occupancy, and the precision of the calculation tool.
Section G1.2.2 .1 Regulated Site Energy Index.
Section G1.2.2.1 - Add new Section G1.2.2 .1 to read as follows:
G1.2.2.1 Regulated Site Energy Index
Regulated Site Energy Index = PBPreg/Baseline building performance
PBPreg = proposed building performance excluding savings from receptacle and other loads allowed by the exception to Table G3.1 row 12 baseline column, contribution of on-site renewable energy (Section G2.4.1.2), off-site renewable energy (Section G2.4.1.2) and the actual performance of the systems providing purchased hot water, steam and chilled water (Section G2.4.1.4).
Section G1.2.2.2 Total Site Energy Index .
Section G1.2.2.2 - Add new Section G1.2.2.2 to read as follows:
G1.2.2.2 Total Site Energy Index
Total Site Energy Index = PBP tot *(1-EC/1000)/Baseline building performance
PBPtot = proposed building performance including savings from receptacle and other loads when allowed by the exception to Table G3.1 row 12 baseline column, contribution of on-site renewable energy (Section G2.4.1.2), off-site renewable energy (Section G2.4.1.3) and the actual performance of the systems providing purchased hot water, steam and chilled water (Section G2.4.1.4).
EC = the total energy credits from tables 11.1.3(1) to 11.1.3(9) for measures listed in Table G1 that are included in the building but excluded from modeling.
Table G1 Energy Efficiency Credits Excluded from Modeling.
Table G1 - Add new Table G1 to read as follows:
Table G1 Energy Efficiency Credits Excluded from Modeling
|
Energy Credit ID |
Energy Credit Abbreviated Title |
Section |
|
|
|
|
|
W04 |
SHW pipe insulation |
11.2.3.2 |
|
W05 |
Point-of-use water heaters |
11.2.3.3 (1) |
|
W06 |
Thermostatic balancing valves |
11.2.3.3 (2) |
|
W07 |
Heat trace system |
11.2.3.3 (3) |
|
W08 |
Water heating system submeters |
11.2.3.4 |
|
P01 |
Energy monitoring |
11.2.4 |
|
Q03 |
Fault detection and diagnostics system |
11.2.7.3 |
Section G1.3.2 Application Documentation .
Section G1.3.2 - Revise Section G1.3.2 to read as follows:
G1.3.2 Application Documentation
The following documentation shall be submitted to the rating authority using the forms developed by the U.S. Department of Energy available at https://www.energycodes.gov/ashrae-standard-901-performance-based-compliance-form.
a. The simulation program used, the version of the simulation program, and the results of the energy analysis. including calculated values for baseline building unregulated energy (BBUE), baseline building regulated energy cost (BBRE),building performance factor (BPF), baseline building performance, the proposed building performance Site Energy Index (PSEI) and Performance Site Energy Index Target (PSEIt) b. An overview of the project that includes the number of stories (above and below grade), the typical floor size, the uses in the building (e.g., office, cafeteria, retail, parking, etc.), the gross area of each use, and whether each use is conditioned space.
c. A list of the energy-related features that are included in the design and on which the performance rating is based. This list shall document all energy features that differ between the models used in the baseline building performance and pro- posed building performance calculations.
d. A list showing compliance for the proposed design with all the requirements of Sections 5.4, 6.4, 7.4, 8.4, 9.4, and 10.4 (mandatory provisions).
e. A list identifying those aspects of the proposed design that are less stringent than the requirements of Sections 5.5, 6.5, 7.5, 9.5, and 9.6 (prescriptive provisions).
f. A list identifying those aspects of the proposed design that are more stringent than the requirements of Sections 5 through 10.
g. A table with a summary by end use of the proposed building performance, ,and baseline building performance,. with each end use separated into regulated and unregulated components
h. A site plan showing all adjacent buildings and topography that may shade the proposed building (with estimated height or number of stories).
i. Building elevations and floor plans (schematic is acceptable).
j A diagram showing the thermal blocks used in the computer simulation.
k. An explanation of any significant modeling assumptions.
l Backup calculations and material to support data inputs (e.g., U-factors for building envelope assemblies, NFRC ratings for fenestration, end-uses identified in Table G3.1, “1 [a]).
m. Reports from the simulation program showing:
1. a breakdown of energy use by at least the following components: lights, internal equipment loads, service water-heating equipment, space-heating equipment, space-cooling and heat rejection equipment, fans, and other HVAC equipment (such as pumps).
2. the amount of unmet load hours for both the proposed design and baseline building design.
3. a description of energy-related features of the budget building design and the proposed design to sup- port requirements of Section G1.3.2(c).
n. An explanation of any error messages noted in the simulation program output.
o. For any exceptional calculation methods employed, document the predicted energy savings by energy type, the energy site energy savings, a narrative explaining the exceptional calculation method performed, and theoretical or empirical information supporting the accuracy of the method.
p. The reduction in proposed building performance associated with on-site renew- able energy.
q The version of the software and the link to the website that contains the ASHRAE Standard 140 results for the version used in accordance with Section G2.2.4.
r. Simulation input files for the budget building design and the proposed design shall be made available if requested by the building official.
Section G1.4 Energy Modeler Qualifications.
Section G1.4 - Add new Section G1.4 to read as follows:
G1.4 Energy Modeler Qualifications
Energy models shall be created by persons qualified by education and training to perform such work. The submitted modeling documentation shall include the name, affiliation, credentials, and contact information of either a registered design professional be signed either with a minimum of two years of experience in modeling buildings of similar size and complexity or an individual with an active certification from ASHRAE as a Building Energy Modeling Professional (BEMP) that completed or supervised the energy modeling.
Section G2.1 Performance Calculations.
Section G2.1 - Delete item “c” from Section G2.1.
Section G2.4.1 On-Site Renewable Energy and Site-Recovered Energy.
Section G2.4.1 - Delete Section G2.4.1 and add new Section G2.4.1, Section G2.4.1.1, Section G2.4.1.2, Section G2.4.1.3, Section G2.4.14 to read as follows:
G2.4.1 Proposed Building Design.
G2.4.1.1 Site-recovered energy. Site-recovered energy shall not be considered purchased energy and shall be subtracted from the proposed design energy consumption prior to calculating the proposed building performance.
G2.4.1.2 On-site renewable energy.Energy generated by on-site renewable energy systems shall be subtracted from the proposed design energy consumption when calculating the proposed building performance (PBP) but not when calculating the PBPreg as defined in Section G1.2.2.1.
G2.4.1.3. Off-site renewable energy. Reserved
G2.4.1.4 Purchased hot water, steam and chilled water. If approved by the rating authority, the performance of the systems providing purchased hot water, steam or chilled water shall be permitted to be used for determining PBPtot as defined in Section G1.2.2.2 but not for determining the PBPreg as defined in Section G1.2.2.1. When permitted, performance of such systems shall be determined by either of the following methods:
1. Monitoring Path.
Systems providing purchased hot water, steam or chilled water shall be modeled in the proposed design as prescribed in Table G3.1 Proposed Building Performance column #10 - HVAC Systems, items (e) and (f), and in Table G3.1 #11 - Service Water-Heating Systems, item (g), except the modeled annual average efficiency shall reflect the measured performance instead of complying with requirements of Section 6.
The measured performance shall be based on data from energy metering equipment on an existing district energy system. All input energy used to operate the district energy system, and all output district heating or cooling delivered by the district thermal distribution system, shall be metered. All district energy system monitoring equipment shall be in place for at least one full 12-month period.
2. Modeling Path
Systems providing purchased hot water, steam or chilled water shall be modeled in the proposed design as prescribed in ANSI/ASHRAE/ICC/USGBC/IES Standard 189.1-2020 Table C1.2, Proposed Building Performance column.
Section G2.4.2 Annual Energy Costs.
Section G2.4.2 - Delete Section G2.4.2 and Add new Section G2.4.2 to read as follows:
G2.4.2 Baseline Building Design
Where on-site renewable energy or site-recovered energy is used in the proposed design, the baseline building design shall be based on the energy source used as the backup energy source, or the baseline system energy source in that category if no backup energy source has been specified, except where the baseline energy source is prescribed in Tables G3.1.1-2 and G3.1.1-3. Where the proposed design includes on-site electricity generation systems other than on-site renewable energy systems, the baseline design shall include the same generation systems excluding its site-recovered energy
Section G2.5 Exceptional Calculation Methods.
Section G2.5 -Revise item “e” from Section G2.5 to read as follows:
e. The Performance Site Energy Index calculated with and without the exceptional calculation method.
Section G3.1.4 Alterations.
Section G3.1.4 -Revise item “a” from Section G3.1.4 to read as follows:
a. In accordance with Section G3.2 for substantial energy alterations.
Table G3.1 Modeling Requirements for Calculating Proposed Building Performance and Baseline Building Performance .
Table G3.1 -Revise Row #2 Additions and Alterations from Table G3.1 to read as follows:
|
2. Additions and Alterations |
|
It is acceptable to predict performance using building models that exclude parts of the existing building, provided that all of the following conditions are met: a. Work to be performed in excluded parts of the building shall meet the requirements of Sections 5 through 10. b. Excluded parts of the building are served by HVAC systems that are entirely separate from those serving parts of the building that are included in the building model. c. Design space temperature and HVAC system operating set points and schedules on either side of the boundary between included and excluded parts of the building are essentially the same. |
If the proposed design excludes parts of the existing building, the baseline building design shall exclude them as well. When modeled, unmodified existing building components shall follow the same rules as new and modified building components. |
Table G3.1 -Revise Row #4 Schedule from Table G3.1 to read as follows:
|
4. Schedule |
|
Schedules capable of modeling hourly variations in occupancy, lighting power, miscellaneous equipment power, thermostat set points, and HVAC system operation shall be used. The schedules shall be typical of the proposed building type as determined by the designer and approved by the rating authority. Temperature and Humidity Schedules. Temperature and humidity control set points and schedules as well as temperature control throttling range shall be the same for proposed design and baseline building design. HVAC System Fan Schedules. Schedules for HVAC system fans that provide outdoor air for ventilation shall run continuously whenever spaces are occupied and shall be cycled ON and OFF to meet heating and cooling loads during unoccupied hours. Exceptions: 1. Where no heating and/or cooling system is to be installed, and a heating or cooling system is being simulated only to meet the requirements described in this table, heating and/or cooling system fans shall not be simulated as running continuously during occupied hours but shall be cycled ON and OFF to meet heating and cooling loads during all hours. 2. HVAC system fans shall remain on during occupied and unoccupied hours in spaces that have health- and safety-mandated minimum ventilation requirements during unoccupied hours. 3. HVAC system fans shall remain on during occupied and unoccupied hours in systems primarily serving computer rooms. 4. Dedicated outdoor air supply fans shall stay off during unoccupied hours. |
Same as proposed design. Exceptions: 1. Set points and schedules for HVAC systems that automatically provide occupant thermal comfort via means other than directly controlling the air dry-bulb and wet-bulb temperature may be allowed to differ, provided that equivalent levels of occupant thermal comfort are demonstrated via the methodology in ASHRAE Standard 55, Section 5.3.3, “Elevated Air Speed,” or Standard 55, Appendix B, “Computer Pro- gram for Calculation of PMV-PPD.” 2. Schedules may be allowed to differ between proposed design and baseline building design when necessary to model non- standard efficiency measures, provided that the revised schedules have been approved by the rating authority. Measures that may warrant use of different schedules include but are not limited to automatic lighting controls, automatic natural ventilation controls, automatic demand control ventilation controls, and automatic controls that reduce service water-heating loads. In no case shall schedules differ where the controls are manual (e.g., manual operation of light switches or manual operation of windows). 3. HVAC system fan schedules may be allowed to differ when Section G3.2.1.2(a) applies. 4. For Systems 6 and 8, only the terminal-unit fan and reheat coil shall be energized to meet heating set point during unoccupied hours 5. When the proposed building design includes HVAC systems serving dwelling units or sleeping units that have controls meeting requirements of Section 11.2.2.4 “H04: Residential HVAC Control”: a. The baseline building design shall be modeled using heating temperature setback of 5°F (3°C) higher than in the proposed design but not higher than the occupied temperature for a maximum of 9 hours per day. b. The baseline building design shall be modeled using cooling temperature setback of 5°F (3°C) lower than the proposed design but not lower than the occupied temperature for not more than 9 hours per day. 6. Lighting schedules shall be allowed to differ based on occupancy sensor reduction factors in Table G3.7 |
Table G3.1 -Revise Row #5 Building Envelope from Table G3.1 to read as follows:
|
5. Building Envelope |
|
a. All components of the building envelope in the proposed design shall be modeled as shown on architectural drawings or as built for existing building envelopes. All opaque building envelope components shall be modeled accounting for thermal mass effects. Exception: The following building elements are permitted to differ from architectural drawings: 1. Each linear thermal bridge and point thermal bridge as identified in Section 5.5.5 shall be modeled using either of the following techniques: a. A separate model of the assembly within the energy simulation model. b. Adjustment of the clear-field U-factor in accordance with Section A10.2.1. 2. Each uninsulated assembly not identified in Section 5.5.5 shall be modeled using either of the following techniques: a. A separate model of the assembly within the energy simulation model. b. The U-factors of uninsulated assemblies can be aver- aged with larger adjacent surfaces of the same class of construction using an area-weighted average method. This average U-factor is modeled within the energy simulation model. 3. Any other building envelope assembly, not subject to the requirements of Section 5.5.5, that covers less than 5% of the total area of that class of construction need not be separately described, provided that it is similar to an assembly being modeled. If not separately described, the U-factors of these assemblies shall be averaged with larger adjacent surfaces using an area-weighted average method. This average U-fac- tor is modeled within the energy simulation model. Exception: When the total area of penetrations from through-the-wall mechanical equipment exceeds 1 percent of the opaque above-grade wall area, the mechanical equipment penetration area shall be modeled as a separate wall assembly with the U-factors established as described in Section 5.5.3.2.4. 4. Exterior surfaces whose azimuth orientation and tilt differ by less than 45 degrees and are otherwise the same may be described as either a single surface or by using multipliers. 5. The exterior roof surface shall be modeled using the aged solar reflectance and thermal emittance determined in accordance with Section 5.5.3.1.1(a). Where aged test data are unavailable, the roof surface may be modeled with a reflectance of 0.30 and a thermal emittance of 0.90. 6. Manual fenestration shading devices, such as blinds or shades, shall be modeled or not modeled the same as in the baseline building design. Automatically controlled fenestration shades or blinds shall be modeled. Permanent shading devices, such as fins, overhangs, and light shelves shall be modeled. 7. Automatically controlled dynamic glazing may be modeled. Manually controlled dynamic glazing shall use the average of the minimum and maximum SHGC and VT. 8. The above-grade wall surface shall be modeled using the initial solar reflectance and thermal emittance determined in accordance with the test methods identified in Section 5.5.3.2.2(a). Where initial test data are unavailable, the wall surface may be modeled with a solar reflectance of 0.25 and a thermal emittance of 0.90. b. To simulate air leakage, infiltration shall be modeled using the same methodology and adjustments for weather and building operation in both the proposed design and the baseline building design. These adjustments shall be made for each simulation time step and must account for but not be limited to weather conditions and HVAC system operation, including strategies that are intended to positively pressurize the building. The air leakage rate of the building envelope shall be converted to appropriate units for the simulation program using one of the methods in Section G3.2.1.7. 1. When whole-building pressurization testing is required or specified during design, and completed in accordance with Section 5.4.3.1.4, the measured air leakage rate of the building envelope (I75Pa) at a fixed building pressure differential of 75 Pa (0.30 in. of water) shall be modeled for purposes of demonstrating compliance with this standard. Informative Note: Before the start of pressurization testing, the maximum air leakage rate of the building envelope (I75Pa) specified in Section 5.4.3.1.4 or as specified in design documents may be simulated to estimate the energy impact of building envelope air leakage. The final measured value is used for compliance; therefore, care should be taken when using estimated air leakage as a trade-off for performance- based code compliance. 2. For buildings providing verification in accordance with Section 5.9.1.2, the air leakage rate of the building envelope (I75Pa) at a fixed building pressure differential of 75 Pa (0.30 in. of water) shall be 0.20 cfm/ft2. |
|
Table G3.1 -Revise Row #10 HVAC Systems from Table G3.1 to read as follows:
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10. HVAC System |
|
The HVAC system type and all related performance parameters in the proposed design, such as equipment capacities and efficiencies, shall be determined as follows: a. Where a complete HVAC system exists, the model shall reflect the actual system type using actual component capacities and effi- ciencies. b. Where an HVAC system has been designed and submitted with design documents, the HVAC model shall be consistent with design documents. Mechanical equipment efficiencies shall be adjusted from actual design conditions to the standard rating con- ditions specified in Section 6.4.1 if required by the simulation model. Where efficiency ratings include supply fan energy, the effi- ciency rating shall be adjusted to remove the supply fan energy from the efficiency rating in the baseline building design. The pro- posed design HVAC system shall be modeled using manufacturers’ full- and part-load data for the HVAC system without fan power. Exception to (a) and (b): Where part-load performance of chillers in the proposed design is not available, and design temperature across the condenser is 10°F, the performance curves in Nor- mative Appendix L, as referenced in Table J-1, shall be mod- eled for the specified chiller. When using performance curves from Normative Appendix L, chiller minimum part-load ratio (ratio of load to available capacity at a given simulation time step) and minimum compressor unloading ratio (part-load ratio below which the chiller capacity cannot be reduced by unload- ing and chiller is false loaded) shall be equal to 0.25. Simulation programs that do not use performance curves are permitted to use an alternative simulation method that results in the same performance as the curves described in Normative Appendix L. c. Where no heating system exists or no heating system has been sub- mitted with design documents, the system type shall be the same system as modeled in the baseline building design and shall com- ply with but not exceed the requirements of Section 6. d. Where no cooling system exists or no cooling system has been submitted with design documents, the cooling system type shall be the same as modeled in the baseline building design and shall comply with the requirements of Section 6. Exception: Spaces using baseline HVAC system types 9 and 10. e. Systems in the proposed design that use purchased hot water or purchased steam shall be modeled with the heating provided by forced draft boiler(s) that comply with but not exceed the requirements of Section 6. The number of boilers and boiler control shall be as required in Section G3.2.3.2. If approved by the rating authority, the actual performance of the purchased hot water and purchased steam systems may contribute toward compliance as described in Section G2.4.1.4. f. Systems in the proposed design that use purchased chilled water shall be modeled with the type and number of chillers determined following Section G3.2.3.7, with equipment efficiency and controls that comply with but not exceed the requirements of Section 6. If approved by the rating authority, the actual performance of the purchased chilled water system may contribute toward compliance as described in Section G2.4.1.4. |
The HVAC systems in the baseline building design shall be of the type and description specified in Section G3.2.1, shall meet the general HVAC system requirements specified in Section G3.2.2, and shall meet any system-specific requirements in Section G3.2.3 that are applicable to the baseline HVAC system types. If the proposed design includes humidification then the baseline building design shall use adiabatic humidification. Exception: If the proposed building humidification system complies with Section 6.5.2.4 then the baseline building design shall use non- adiabatic humidification. For systems serving computer rooms, the baseline building design shall not have reheat for the purpose of dehumidification. Fossil fuel systems shall be modeled using natural gas as their fuel source. |
Table G3.1 -Revise Row #11 Service Water-Heating Systems from Table G3.1 to read as follows:
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11. Service Water-Heating System |
|
The service water-heating system type and all related performance parameters, such as equipment capacities and efficiencies, in the proposed design shall be determined as follows: a. Where a complete service water-heating system exists, the pro- posed design shall reflect the actual system type using actual com- ponent capacities and efficiencies. b. Where a service water-heating system has been designed and sub- mitted with design documents, the service water-heating model shall be consistent with design documents. c. Where no service water-heating system exists or has been designed and submitted with design documents but the building will have service water-heating loads, a service water-heating system shall be modeled that matches the system type in the baseline building design, serves the same water-heating loads, and shall comply with but not exceed the requirements of Section 7. d. For buildings that will have no service water-heating loads, no ser- vice water-heating system shall be modeled. e. Where a combined system has been specified to meet both space heating and service water-heating loads, the proposed design shall reflect the actual system type using actual component capacities and efficiencies. f. Piping losses shall not be modeled. g. For systems in the proposed design using purchased hot water or steam, the service water heating system type shall be as specified in Table G3.1.1-2. Each system shall be sized according to the provisions of Section 7.4.1 and the equipment shall match the minimum efficiency requirements in Section 7.4.2. If approved by the rating authority, the actual performance of the purchased hot water and purchased steam systems may contribute toward compliance as described in Section G2.4.1.4. |
The service water-heating system in the baseline building design shall be as specified in Table G3.1.1-2 and conform with the following conditions: a. Where a complete service water-heating system exists or a new service water-heating system has been specified, one service water-heating system shall be modeled for each building area type in the proposed building. Each system shall be sized accord- ing to the provisions of Section 7.4.1, and the equipment shall match the minimum efficiency requirements in Section 7.4.2. b. Where no service water-heating system exists or has been speci- fied but the building will have service water-heating loads, one service water-heating system shall be modeled for each antici- pated building area type in the proposed design. Each system shall meet the minimum efficiency requirements of Section 7.4.2 and be modeled identically to the proposed design. c. For buildings that will have no service water-heating loads, no service water-heating shall be modeled. d. For large, 24-hour-per-day facilities that meet the prescriptive cri- teria for use of condenser heat recovery systems described in Sec- tion 6.5.6.2, a system meeting the requirements of that section shall be included in the baseline building design regardless of the exceptions to Section 6.5.6.2. Exception: If a condenser heat recovery system meeting the requirements described in Section 6.5.6.2 cannot be modeled, the requirement for including such a system in the actual building shall be met as a prescriptive requirement in accor- dance with Section 6.5.6.2, and no heat recovery system shall be included in the proposed design or baseline building design. e. Service water-heating energy consumption shall be calculated explicitly based upon the volume of service water heating required and the entering makeup water and the leaving service water-heating temperatures. Entering water temperatures shall be estimated based upon the location. Leaving temperatures shall be based upon the end-use requirements. f. Where recirculation pumps are used to ensure prompt availability of service water-heating at the end use, the energy consumption of such pumps shall be calculated explicitly. g. Service water loads and use shall be the same for both the pro- posed design and baseline building design and shall be docu- mented by the calculation procedures described in Section 7.4.1. Exceptions: 1. Service water-heating use can be demonstrated to be reduced by documented water conservation measures that reduce the physical volume of service water required. Examples include, but are not limited to, low-flow shower heads and dishwashers. Such reduction shall be demonstrated by calcu- lations. The baseline flow rates shall be determined as described in Table G3.1, No. 1, and the calculation methodol- ogy shall be approved by the authority having jurisdiction. 2. Service water-heating energy consumption can be demon- strated to be reduced by reducing the required temperature of service mixed water, by increasing the temperature, or by increasing the temperature of the entering makeup water. Examples include alternative sanitizing technologies for dishwashing and heat recovery to entering makeup water. Such reduction shall be demonstrated by calculations. 3. Service water heating use can be demonstrated to be reduced by reducing the hot fraction of mixed water to achieve required operational temperature. Examples include shower or laundry heat recovery to incoming cold-water supply, reducing the hot-water fraction required to meet required mixed-water temperature. Such reduction shall be demon- strated by calculations. h. Gas storage water heaters shall be modeled using natural gas as their fuel. i. Piping losses shall not be modeled. |
Table G3.1 -Revise Row #12 Receptacle and Other Loads from Table G3.1 to read as follows:
|
12 Receptacle and Other Loads |
|
|
Receptacle and process loads, such as those for office and other equipment, shall be estimated based on the building area type or space type category and shall be assumed to be identical in the proposed design and baseline building design, except as specifically approved by the rating authority only when quantifying performance that exceeds the requirements of Standard 90.1 but not when the Performance Rating Method is used as an alternative path for minimum standard compliance in accordance with Section 4.2.1.1. These loads shall always be included in simulations of the building. These loads shall be included when calculating the proposed building performance and the baseline building performance as required by Section G1.2.1. Exception: When receptacle controls installed in spaces where not required by Section 8.4.2 are included in the proposed building design, the hourly receptacle shall be reduced as follows: RPC = RC × 10% where RPC = receptacle power credit EPSpro = EPSbas × (1 - RPC) RC = percentage of all controlled receptacles EPSbas = baseline equipment power hourly schedule (fraction) EPSpro = proposed equipment power hourly schedule (fraction) a. Where power and other systems covered by Sections 8 and 10 have been designed and submitted with design documents, those sys- tems shall be determined in accordance with Sections 8 and 10. b. Where power and other systems covered by Sections 8 and 10 have not been submitted with design documents, those systems shall comply with but not exceed the requirements of those sections. |
Motors shall be modeled as having the efficiency ratings found in Table G3.9.1 Other systems covered by Section 10 shall be modeled as identical to those in the proposed design, including schedules of operation and control of the equipment. Energy used for cooking equipment, receptacle loads, computers, medical or laboratory equipment, and manufacturing and industrial process equipment not specifically identified in the standard power and energy rating or capacity of the equipment shall be identical between the proposed building performance and the baseline building performance. Receptacle schedules shall be the same as the proposed design before the receptacle power credit is applied. Exception: When calculating the Total Site Energy Index, variations of the power requirements, schedules, or control sequences of the equipment modeled in the baseline building design from those in the proposed design shall be approved by the rating authority based on documentation described in Table G3.1(1), or that the equipment installed in the proposed design represents a significant verifiable departure from documented current conventional practice. The burden of this documentation is to demonstrate that accepted conventional practice would result in baseline building equipment different from that installed in the proposed design. Occupancy and occupancy sched- ules shall not be changed. |
Section G3.2.1.4 Purchased Heat.
Section G3.2.1.4 - Delete Section G3.2.1.4 and Add new Section G3.2.1.4 to read as follows:
G3.2.1.4 Reserved
Section G3.2.1.5 Purchased Chilled Water.
Section G3.2.1.5 - Delete Section G3.2.1.5 and Add new Section G3.2.1.5 to read as follows:
G3.2.1.5 Reserved
Section G3.2.1.6 Baseline HVAC System Requirements for Systems Utilizing Purchased Chilled Water and/or Purchased Heat.
Section G3.2.1.6 - Delete Section G3.2.1.6, Section G3.2.1.6.1, Section G3.2.1.6.2, Section G3.2.1.6.3, Section G3.2.1.6.4 and Add new Section G3.2.1.6 to read as follows:
G3.2.1.6 Reserved
Section G3.2.3.4 Hot-Water Supply Temperature Reset (Systems 1, 5, 7, 11, and 12).
Section G3.2.3.4 - Delete the exception from Section G3.2.3.4.
Section G3.2.3.5 Hot-Water Pumps (Systems 1, 5, 7, 11, and 12).
Section G3.2.3.5 - Delete the exception from Section G3.2.3.5.
Section G3.2.3.7 Type and Number of Chillers (Systems 7, 8, 11, 12, and 13).
Section G3.2.3.7 - Delete the exception from Section G3.2.3.7.
Section G3.2.3.9 Chilled-Water Supply Temperature Reset (Systems 7, 8, 11, 12, and 13).
Section G3.2.3.9 - Delete exception 2 from Section G3.2.3.9.
Section G3.2.3.10 Chilled-Water Pumps (Systems 7, 8, 11, 12, and 13).
Section G3.2.3.10 - Delete the exception from Section G3.2.3.10.
Table G3.1.1-1 Baseline Building Vertical Fenestration.
Table G3.1.1-1 - Revise Table G3.1.1-1 to read as follows:
Table G3.1.1-1 Baseline Building Vertical Fenestration
|
Building Area Typesa |
Baseline Building Vertical Fenestration Area as a Percentage of Gross Above-Grade-Wall Area |
|
Grocery store |
7% |
|
Healthcare (outpatient) |
21% |
|
Hospital |
27% |
|
Hotel/motel (≤75 rooms) |
24% |
|
Hotel/motel (>75 rooms) |
34% |
|
Multifamily (≤20 stories) |
17% |
|
Multifamily (> 20 stories) |
30% |
|
Office (≤5000 ft2) |
19% |
|
Office (5000 to 50,000 ft2) |
31% |
|
Office (>50,000 ft2) |
40% |
|
Restaurant (quick service) |
34% |
|
Restaurant (full service) |
24% |
|
Retail (stand alone) |
11% |
|
Retail (strip mall) |
20% |
|
School (primary) |
22% |
|
School (secondary and university) |
22% |
|
Warehouse (nonrefrigerated) |
6% |
Table G3.7-1 Performance Rating Method Lighting Power Density Allowances and Occupancy Sensor Reductions Using the Space-by-Space Method.
Table G3.7-1 - Revise Table G3.7-1 to read as follows:
|
Common Space Typesa |
Lighting Power Density, W/ft2 |
Occupancy Sensor Reductionb |
|
Atrium |
|
|
|
<20 ft in height |
0.0375 per foot in total |
10% |
|
³20 ft and £40 ft in height |
height |
|
|
>40 ft in height |
0.50 + 0.025 per foot in |
10% |
|
|
total height |
|
|
Audience Seating Area |
|
|
|
Auditorium |
0.90 |
10% |
|
Convention center |
0.70 |
10% |
|
Gymnasium |
0.40 |
10% |
|
Motion picture theater |
1.20 |
10% |
|
Performing arts theater |
2.60 |
10% |
|
In a sports arena |
0.40 |
10% |
|
All other audience seating area |
0.90 |
10% |
|
Banking Activity Area |
1.50 |
10% |
|
Classroom/Lecture Hall/Training Room |
|
|
|
Preschool through 12th grade, laboratory, and shop classrooms |
1.40 |
30% |
|
All other classroom/lecture hall/training room |
1.40 |
None |
|
Computer Room |
2.14 |
35% |
|
Conference/Meeting/Multipurpose Room |
1.30 |
None |
|
Copy/Print Room |
0.90 |
10% |
|
Corridor |
0.50 |
25% |
|
Courtroom |
1.90 |
10% |
|
Dining Area |
|
|
|
Bar/lounge or leisure dining |
1.40 |
35% |
|
Cafeteria or fast food dining |
0.90 |
35% |
|
Family dining |
2.10 |
35% |
|
All other dining area |
0.90 |
35% |
|
Dwelling Unit |
1.07 |
None |
|
Electrical/Mechanical Room |
1.50 |
30% |
|
Emergency Vehicle Garage |
0.80 |
10% |
|
Equipment Room |
1.20 |
10% |
|
Food Preparation Area |
1.20 |
30% |
|
Guest Room |
1.14 |
45% |
|
Laboratory |
|
|
|
Preschool through 12th grade, laboratory, and shop classrooms |
1.40 |
30% |
|
All other laboratory except in or as a classroom |
1.40 |
10% |
a. In cases where both a common space type and a building-specific space type are listed, the building-specific space type shall apply.
b. For manual-ON or partial-auto-ON occupancy sensors, the occupancy sensor reduction factor shall be multiplied by 1.25.
c. For occupancy sensors controlling individual workstation lighting, occupancy sensor reduction factor shall be 30%.
d. For luminaire that meet requirements of Section 11.2.5.2 (energy credit L02) the occupancy sensor reduction factor shall be increased by 7.5%.
e. For lighting in the dwelling units that have controls meeting the requirements of Section 11.2.5.5 (energy credit L05) the occupancy senor reduction factor shall be 10%.
Normative Appendix L- Mechanical System Performance Rating Method.
Table L.1.1.1 Proposed Building HVAC Systems Allowed to Use the Mechanical System Performance Rating Method
Table L.1.1.1 - Revise Table L.1.1.1 to read as follows:
|
System No. |
System Name |
|
1 |
Packaged terminal air conditioner (with electric or hydronic heat) |
|
2 |
Packaged terminal heat pump |
|
3 |
Packaged single-zone furnacea and/or air-cooled air conditioner (includes split systems b) |
|
4 |
Packaged single-zone heat pump (air-to-air only) (includes split systems b and electric or gas supplemental heat) |
|
5 |
VRF system (air source) |
|
6 |
Four-pipe fan coil |
|
7 |
Water-source heat pump (water loop), water-source VRF system, or water-source air conditioner |
|
8 |
Ground-source heat pump |
|
9 |
Packaged VAV system (DX cooling) a |
|
10 |
VAV system (hydronic cooling) a |
|
11 |
VAV system with fan-powered terminal units |
|
12 |
DOAS (in conjunction with systems 1 through 8) |
|
13 |
Hot Water or Electric Baseboards (in conjunction with systems 9-11) |
|
14 |
District Heating System (in conjunction with systems 1, 6, 9, 10 and 11) |
a. Reheat or primary heat may be electric, hydronic, or gas furnace.
b. Condensing units with DX air handlers are modeled as package furnace with air conditioners or heat pumps.
Informative Note: See Section 3.3 for a full list of terms used in this table.
c. HVAC systems serving portions of the building that are also served in parallel by other HVAC systems not allowed to use the Mechanical System Performance Rating Method
d. HVAC systems using any of the following:
1. District cooling
2. Small-duct high-velocity air-cooled, space-constrained air-cooled, single-package vertical air conditioner, single-package vertical heat pump
3. Double-duct air conditioner or double-duct heat pump as defined in 10CFR part 431, Subpart F
4. Packaged terminal air conditioners and packaged terminal heat pumps that have cooling capacity greater than 12,000 Btu/h
5. Systems with a common heating source serving both HVAC and service water heating equipment
6. HVAC systems that provide recovered heat for service water heating
Section L2.1.2 Mechanical System Performance Rating Method Requirements.
Section L2.1.2 - Revise Section L2.1.2 to read as follows:
L2.1.2 Mechanical System Performance Rating Method Requirements. All HVAC systems using the Mechanical System Performance Rating Method shall demonstrate compliance using either Section L2.1.2.1 “Prescriptive TSPR Compliance Path” or Section L2.1.2.2 “Modeling-Based TSPR Compliance Path” and the following additional requirements:
a. Alterations that include replacement of the entire HVAC system shall be treated as a new building.
b. Initial build-out construction shall be modeled in accordance with Section L2.1.3, “Core and Shell/Initial Build-Out Construction Analysis.”
c. Compliance documentation and supplemental information shall be submitted in accordance with Sections 4.2.2. In addition, when following Section L2.1.2.2, Modeling-Based Path, requirements in Section L2.1.6 “TSPR Submittals” shall be met.
Section L2.1.2.1 Prescriptive TSPR Compliance Path.
Section L2.1.2.1 - Add new Section L2.1.2.1 to read as follows:
L2.1.2.1 Prescriptive TSPR Compliance Path. Systems in the proposed design shall meet Section 6.5 "Prescriptive Compliance Path” and the following additional requirements:
Section L2.1.2.1.1 Space Conditioning System Type
Section L2.1.2.1.1 - Add new Section L2.1.2.1.1 to read as follows:
L2.1.2.1.1 Space Conditioning System Type.
HVAC systems of the following types shall be permitted:
a. Packaged air- source heat pump (includes split systems) with supplemental electric resistance heating locked out above 40°F outdoor air temperature.
b. Variable refrigerant flow heat pump air cooled, water cooled, groundwater or ground source
c. Ground source and groundwater source heat pump
d. Water-source heat pump with a condenser water loop served by an air to water heat pump system
e. Fan coil units served by a water-cooled chiller and air-to-water heat pump systems
The HVAC systems shall use electricity for space heating and cooling.
Exception to L2.1.2.1.1
1. Offices 50,000 ft2 or greater shall only be permitted to use option e, fan coil units served by a water-cooled chiller and air-to-water heat pump systems.
Section L2.1.2.1.2 Mechanical Ventilation.
Section L2.1.2.1.2 - Add new Section L2.1.2.1.2 to read as follows:
1. L2.1.2.1.2 Mechanical Ventilation
a. Ventilation outdoor airflow shall be supplied through a Dedicated Outdoor Air System (DOAS) equipped with a supply fan, exhaust fan, and an energy recovery device. No additional cooling shall be provided by the DOAS. DOAS temperature control shall be as specified in Table L2.1.2.1.1.
b. The DOAS supply and return fans shall run whenever one or more spaces served by the system are scheduled to be occupied and shall not require operation of the space conditioning system fans for ventilation air delivery.
c. The DOAS system energy recovery device shall have an enthalpy recovery ratio of at least 60% at cooling and heating design conditions.
Section L2.1.2.1.3 Fan System Power.
Section L2.1.2.1.3 - Add new Section L2.1.2.1.3 to read as follows:
L2.1.2.1.3 Fan System Power
Fan system power shall not exceed allowances in Tables L2.1.2.1.1 and L2.1.2.1.2.
a. Space conditioning system fans shall cycle on to meet heating and cooling setpoints and shall not run continuously.
b. Where sound attenuation section is specified in the proposed design for fans serving spaces with design background noise goals below NC35, fan power limitation shall be increased based on the pressure drop adjustment in Table 6.5.3.1-2.
c. For systems in the proposed design with specified particulate filtration of MERV 13 or greater, fan power limitation in Tables L2.1.2.1.1 and L2.1.2.1.2 shall be increased based on the pressure drop adjustment in Table 6.5.3.1-2.
Section L2.1.2.1.4 Air-side economizers.
Section L2.1.2.1.4 - Add new Section L2.1.2.1.4 to read as follows:
L2.1.2.1.4. Air-side economizers shall be included where required in Section 6.5.1 excluding Exception 1.
Exception to L2.1.2.1.4
HVAC systems serving dwelling units
Section L2.1.2.1.5 Additional Requirements for Water Source Heat Pumps.
Section L2.1.2.1.5 - Add new Section L2.1.2.1.5 to read as follows:
L2.1.2.1.5 Additional Requirements for Water Source Heat Pumps
a. Heat rejection shall be provided by a cooling tower with variable-speed fans designed to supply no less than 40.2 gpm (2.5 L/s) per/hp.
b. Pump motor input power shall not exceed 22 W/gpm (1.4 W∙s/L).
c. Loop flow shall be variable with variable speed drive pump and unit fluid flow shutoff at each heat pump when its compressor cycles off.
Table L2.1.2.1.1 Additional HVAC System Requirements for DOAS Systems.
Table L2.1.2.1.1 - Add new Table L2.1.2.1.1 to read as follows:
Table L2.1.2.1.1 Additional HVAC System Requirements for DOAS Systems
|
Parameter |
Building Type |
|
|
Office 50,000SF or greater |
Office less than 50,000SF |
Retail |
School/ Education |
Multifamily >10 floors |
Multifamily, 4-10 floors, hotel/Motel |
|
Fan Power Limitation (W/cfm of outside air) <MERV13 |
0.819 |
0.819 |
0.730 |
0.742 |
0.730 |
0.730 |
|
Temperature Control (Note 1) |
Bypass |
Wild or Bypass |
Bypass |
Bypass |
Bypass |
Wild or Bypass |
Note 1: DOAS temperature control legend
1. “Wild” DOAS control indicates no active control of the supply air temperature leaving the DOAS system. Temperature will fluctuate based only on entering and leaving conditions and the effectiveness of energy recovery device.
2. “Bypass” DOAS control includes modulating dampers to bypass ERV with the intent to maintain supply air temperature at a maximum of 60 deg. F. when outside air is below 75°F. Once outside air is above 75°F bypass dampers will be fully closed.
Table L2.1.2.1.2 Space Conditioning Systems Fan Power Limitation.
Table L2.1.2.1.2 - Add new Table L2.1.2.1.2 to read as follows:
Table L2.1.2.1.2 Space Conditioning Systems Fan Power Limitation
|
|
HVAC System Type |
|
|
Packaged Air-source Heat Pump (includes split systems) (J2.1.3.1 a) |
Variable Refrigerant Flow Heat Pump (J2.1.3.1 b) |
Ground Source and Groundwater Source Heat Pump (J2.1.3.1 c) |
Water-source Heat Pumps (J2.1.3.1 d) |
Fan Coil Units (J2.1.3.1 e)* |
|
Fan Power Limitation (W/cfm) <MERV13 |
0.528 |
0.35 |
0.528 |
0.528 |
0.3 |
*Fan coil unit: a terminal
Section L2.1.2.2 Modeling-based TSPR Compliance Path.
Section L2.1.2.2 - Add new Section L2.1.2.2 to read as follows:
L2.1.2.2 Modeling-based TSPR Compliance Path. All HVAC systems using the Mechanical System Performance Rating Method shall demonstrate compliance using TSPRp and TSPRr as follows:
a. The proposed design total system performance ratio (TSPRp) of the HVAC systems using this method shall be greater than or equal to the total system performance ratio of the TSPR reference building design (TSPRr) divided by the mechanical performance factor (MPF) when calculated in accordance with the 80following:
TSPRp > TSPRr/MPF
where
TSPRp = proposed TSPR calculated in accordance with Normative Appendix L
TSPRr = reference TSPR calculated in accordance with Normative Appendix L
MPF = mechanical performance factor from Table 6.6.2.2 based on climate zone and building use type Where a building has multiple building use types, MPF shall be area weighted as follows:
MPF = (A1 × MPF1 + A2 × MPF2 + ... + An × MPFn)/(A1 + A2 + ... + An)
where
MPF1, MPF2, ..., MPFn = mechanical performance factors from Table 6.6.2.2 based on climate zone and building use types 1 through n
A1, A2, ..., An = gross conditioned floor areas for building use types 1 through n
Informative Note: The Mechanical System Performance Rating Method is a simplified performance trade-off approach for HVAC systems that does not require using the whole-building trade-off approaches in Normative Appendix G. HVAC systems that are allowed to use this approach will not need to comply with all of the prescriptive requirements in Section 6.5. For example, an HVAC system without a required outdoor air economizer can show compliance with Section 6 by demonstrating improved cooling efficiency or reduced fan energy use compared to a reference HVAC system that meets all prescriptive requirements, including outdoor air economizers. This approach does not allow HVAC system efficiency trade-offs with building envelope, plug loads, or lighting systems.
b. TSPRp and TSPRr shall be calculated in accordance with Section L2.1.5, “Calculating TSPR,” and the requirements of Sections L1, L3, L4, and L5.
c. HVAC systems shall comply with Section L2.1.4 “Partial Prescriptive Requirements.”
Section L5 TSPR Metric for Site HVAC Energy Input.
Section L5 - Revise Section L5 to read as follows:
L5. TSPR METRIC FOR SITE HVAC ENERGY INPUT
For purposes of calculating TSPR for the proposed design and the TSPR reference building design, the calculated HVAC energy input of each building project energy source shall be expressed in units of site energy.
Section 13- Normative References.
Section 13- Add new normative reference to read as follows:
|
Reference |
Section |
|
UL, LLC 333 Pfingsten Rd., Northbrook IL 60062 |
|
UL 9540-2023 |
Energy Storage Systems and Equipment |
10.4.9.2 |
§ 4. This local law shall take effect on the same date of that New York State Energy Conservation Construction Code, as adopted on October 1, 2025, by the State Fire Prevention and Building Code Council pursuant to Article 11 of the New York State Energy Law, takes effect, except that if this local law becomes law after such date, it is retroactive to and deemed to have been in effect as of the effective date of such New Yore State Energy Conservation Construction Code.