Part I ‒ Administration

Chapter 1 Administration

Part II ‒ Definitions

Chapter 2 Definitions

Part III ‒ Building Planning and Construction

Chapter 3 Building Planning

Chapter 4 Foundations

Chapter 5 Floors

Chapter 6 Wall Construction

Chapter 7 Wall Covering

Chapter 8 Roof-Ceiling Construction

Chapter 9 Roof Assemblies

Chapter 10 Chimneys and Fireplaces

Part IV ‒ Energy Conservation

Chapter 11 Energy Efficiency

Part V ‒ Mechanical

Chapter 12 Mechanical Administration

Chapter 13 General Mechanical System Requirements

Chapter 14 Heating and Cooling Equipment

Chapter 15 Exhaust Systems

Chapter 16 Duct Systems

Chapter 17 Combustion Air

Chapter 18 Chimneys and Vents

Chapter 19 Special Fuel-Burning Equipment

Chapter 20 Boilers and Water Heaters

Chapter 21 Hydronic Piping

Chapter 22 Special Piping and Storage Systems

Chapter 23 Solar Systems

Part VI ‒ Fuel Gas

Chapter 24 Fuel Gas

Part VII ‒ Plumbing

Chapter 25 Plumbing Administration

Chapter 26 General Plumbing Requirements

Chapter 27 Plumbing Fixtures

Chapter 28 Water Heaters

Chapter 29 Water Supply and Distribution

Chapter 30 Sanitary Drainage

Chapter 31 Vents

Chapter 32 Traps

Part VIII ‒ Electrical

Chapter 33 General Requirements

Chapter 34 Electrical Definitions

Chapter 35 Services

Chapter 36 Branch Circuit and Feeder Requirements

Chapter 37 Wiring Methods

Chapter 38 Power and Lighting Distribution

Chapter 39 Devices and Luminaires

Chapter 40 Appliance Installation

Chapter 41 Swimming Pools

Chapter 42 Class 2 Remote-Control‚ Signaling and Power-Limited Circuits

Part IX ‒ Referenced Standards

Chapter 43 Referenced Standards

Appendix A Sizing and Capacities of Gas Piping

Appendix B Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods

Appendix C Plumbing Sanitary Drainage Fittings

Appendix D Recommended Procedure for Safety Inspection of an Existing Appliance Installation

Appendix E Manufactured Housing Used as Dwellings

Appendix F Reserved

Appendix G Swimming Pools‚ Spas and Hot Tubs

Appendix H Patio Covers

Appendix I Reserved

Appendix J Existing Buildings and Structures

Appendix K Sound Transmission

Appendix L Reserved

Appendix M Reserved

Appendix N Structural Safety

Appendix O Reserved

Appendix P Reserved

Appendix Q Reserved

Compliance can be determined through the use of computer software developed by the United States Department of Energy (DOE), including REScheck, COMcheck,or REM/Rate home energy rating and REM/Design Home energy analysis software specifically developed for this code, or of other building energy modeling or home energy rating (HERS) software approved by the Secretary of State. Software programs used to show compliance, must indicate compliance with The Energy Conservation Construction code of New York State—2010 (ECCCNYS 2010) to reflect the actual requirements of the code. RESCheck printout forms must show "ECCCNYS 2010" in the title of the print out. Other software programs (for example, REM Rate/REM Design) must clearly indicate that ECCCNYS 2010 parameters have been complied with. When using the software approach to show compliance, the mandatory code provisions of Chapter 4 must be complied with.
This chapter regulates the energy efficiency for the design and construction of buildings regulated by this code.

Exceptions:


1. Portions of the building envelope that do not enclose conditioned space.
2. The provisions of this chapter shall not be applicable to building systems which are demonstrated to derive energy solely from renewable energy sources.
The following buildings, or portions thereof, separated from the remainder of the building by building thermal envelope assemblies complying with this chapter shall be exempt from the thermal envelope provisions of this chapter:
1. Those with a peak design rate of energy usage less than 3.4 Btu/h per square foot or 1.0 watt per square foot (10.7 W/m2) of floor area for space conditioning purposes.
2. Those that do not contain conditioned space.
An alteration or renovation to an existing building or structure that (1) is listed in the New York State Register of Historic Places, either individually or as a contributing building to a historic district, or (2) is listed in the National Register of Historic Places, either individually or as a contributing building to a historic district, or (3) has been determined to be eligible for listing in either the New York State or National Register of Historic Places, either individually or as a contributing building to a historic district, by the New York State Commissioner of Parks, Recreation and Historic Preservation, or (4) has been determined to be eligible for listing in the National Register of Historic Places, either individually or as a contributing building to a historic district, by the U.S. Secretary of the Interior, need not comply with this code.
This chapter shall regulate the design and construction of buildings for the effective use of energy. This chapter is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve the effective use of energy. This chapter 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 which tend to minimze consumption of energy and utilize to the greatest extent practical solar and other renewable sources of energy without affecting reasonable requirements for the health, safety 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.
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. The provisions of Article 11 of the New York State Energy Law shall apply as to limit any applicability as found therein.
alterations, or renovations. Additions, alterations, or renovations to an existing building, building system or portion thereof shall conform to the provisions of this chapter as they relate to new construction without requiring the unaltered portion(s) of the existing building or building system to comply with this chapter. An addition shall be deemed to comply with this chapter if the addition alone complies or if the existing building and addition comply with this chapter as a single building. Additions, alterations, or renovations shall not create an unsafe or hazardous condition or overload existing building systems.

Exception:
The following need not comply provided the energy use of the building is not increased:
1. Storm windows installed over existing fenestration.
2. Glass only replacements in an existing sash and frame, provided the U-factor and the solar heat gain coefficient (SHGC) will be equal to or lower than before the glass replacement.
3. Alterations, renovations or repairs to roof/ceiling, wall or floor cavities which are insulated to full depth with insulation having a minimal nominal value of R-3.0/inch.
4. Alterations, renovations or repairs to walls and floors, where the existing structure is without framing cavities and no new framing cavities are created.
5. 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.
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 a conditioned space from the exterior shall not be removed.
7. An alterations that replaces less than 50 percent of the luminaires in a space, provided that such alteration does not increase the installed interior lighting power.
8. 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.
Change in occupancy or use. Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy shall comply with this code. Where the use in a space changes from one use in Table 505.5.2 to another use in Table 505.5.2, the installed lighting wattage shall comply with Section 505.5.
Any nonconditioned space that is altered to become conditioned space shall comply with the provisions of this chapter for an addition.
Compliance shall be demonstrated by either meeting the requirements of the Energy Conservation Construction Code of New York State or meeting the requirements of this chapter. Climate zones from Table N1101.4 shall be used in determining the applicable requirements from this chapter. Projects shall comply with Sections N1101, N1102.2.3, N1102.2.12, N1102.4, N1102.5 and N1103 (referred to as the mandatory provisions).

TABLE N1101.4
NEW YORK STATE CLIMATE ZONES BY COUNTY

Zone 4 Zone 5 Zone 6
Bronx
Kings
Nassau
New york
Queens
Richmond
Suffolk
Westchester
Albany
Cayuga
Chautauqua
Chemung
Columbia
Cortland
Dutchess
Erie
Genessee
Greene
Livingston
Monroe
Niagara
Onondaga
Ontario
Orange
Orleans
Oswego
Putnam
Rensselaer
Rockland
Saratoga
Schenectady
Seneca
Tioga
Washington
Wayne
Yates
Allegany
Broome
Cattaraugus
Chenango
Clinton
Delaware
Essex
Franklin
Fulton
Hamilton
Herkimer
Jefferson
Lewis
Madison
Montgomery
Oneida
Otsego
St. Lawrence
Schoharie
Schuyler
Steuben
Sullivan
Tompkins
Ulster
Warren
Wyoming


N
Construction documents shall be drawn to scale upon suitable material. Electronic media documents are permitted to be submitted when approved by the code official. Construction documents shall be 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, systems and equipment as herein governed. Details shall include, but are not limited to, as applicable, insulation materials and their R -values; fenestration U -factors and SHGCs; area-weighted U -factor and SHGC calculations; mechanical system design crieteria; mechanical and service water heating system and equipment, types, sizes and efficiencies; economizer description; equipment and systems controls; fan motor hp and controls; duct sealing; duct and pipe insulation and location; lighting fixture schedule with wattages and control narrative; and air sealing details. The specific path of code compliance for each element of the building regulated by this chapter shall be clearly identified within the construction documentation. When compliance is achieved through computer software programs the documentation shall include all of the work sheets associated with specific building elements. Construction documents and other supporting data shall be submitted in one or more sets with each application for a permit. The construction documents shall be prepared by a design professional as required by the New York State Education Law Articles 145 and 147.
When plans or specifications bear the seal and signature of a licensed professional, such licensed professional shall also include a written statement that to the best of his/her knowledge, belief and professional judgment, such plans or specifications are in compliance with this chapter.
Materials, systems and equipment shall be identified in a manner that will allow a determination of compliance with the applicable provisions of this chapter.
An R-value identification mark shall be applied by the manufacturer to each piece of building thermal envelope insulation 12 inches (305 mm) or more wide. Alternately, the insulation installers shall provide a certification listing the type, manufacturer and R-value of insulation installed in each element of the building thermal envelope. For blown or sprayed insulation (fiberglass and cellulose), the initial installed thickness, settled thickness, settled R-value, installed density, coverage area and number of bags installed shall be listed on the certification. For sprayed polyurethane foam (SPF) insulation, the installed thickness of the area covered and R-value of installed thickness shall be listed on the certificate. The insulation installer shall sign, date and post the certificate in a conspicuous location on the job site.
The thickness of blown in or sprayed roof/ceiling insulation (fiberglass or cellulose) shall be written in inches (mm) on markers that are installed at least one for every 300 ft 2 (28 m 2 ) throughout the attic space. The markers shall be affixed to the trusses or joists and marked with the minimum initial installed thickness with numbers a minimum of 1 inch (25 mm) high. Each marker shall face the attic access opening. Spray polyurethane foam thickness and installed R -value shall be listed on the certificate provided by the insulation installer.
Insulating materials shall be installed such that the manufacturer’s R -value mark is readily observable upon inspection.
U-factors of fenestration products (windows, doors and skylights) shall be determined in accordance with NFRC 100 by an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled U-factor shall be assigned a default U-factor from Tables N1101.6(1) and N1101.6(2). The solar heat gain coefficient (SHGC) of glazed fenestration products (windows, glazed doors and skylights) shall be determined in accordance with NFRC 200 by an accredited, independent laboratory, and labeled and certified by the manufacturer. Products lacking such a labeled SHGC shall be assigned a default SHGC from Table N1101.6(3).

TABLE N1101.6(1)
DEFAULT GLAZED FENESTRATION U-FACTORS

FRAME TYPE SINGLE PANE DOUBLE PANE SKYLIGHT
SINGLE DOUBLE
Metal 1.20 0.80 2.00 1.30
Metal with thermal break 1.10 0.65 1.90 1.10
Nonmetal or metal clad 0.95 0.55 1.75 1.05
Glazed block 0.60


TABLE N1101.6(2)
DEFAULT DOOR U-FACTORS

DOOR TYPE U-FACTOR
Uninsulated metal 1.20
Insulated metal 0.60
Wood 0.50
Insulated, nonmetal edge, max 45% glazing, any glazing double pane 0.35


TABLE N1101.6(3)
DEFAULT GLAZED FENESTRATION SHGC

SINGLE GLAZED DOUBLE GLAZED GLAZED
BLOCK
Clear Tinted Clear Tinted
0.8 0.7 0.7 0.6 0.6
All materials, systems and equipment shall be installed in accordance with the manufacturer’s installation instructions and the provisions of this code.
Insulation applied to the exterior of basement walls, crawl space walls, and the perimeter of slab-on-grade floors shall have a rigid, opaque and weather-resistant protective covering to prevent the degradation of the insulation’s thermal performance. The protective covering shall cover the exposed exterior insulation and extend a minimum of 6 inches (152 mm) below grade.
The building official or other authority having jurisdiction shall be permitted to determine a national, state or local energy efficiency program to exceed the energy efficiency required by this chapter. Buildings approved in writing by such an energy efficiency program shall be considered in compliance with this code. In addition, the requirements identified as "mandatory" by section 1101.4 must be met.
A permanent certificate shall be posted on or in the electrical distribution panel. The certificate shall not cover or obstruct visibility of the circuit directory label, service disconnect label or other required labels. The certificate shall be completed by the builder or registered design professional. The certificate shall list the predominant R-values of insulation installed in or on ceiling/roof, walls, foundation (slab, basement wall, crawlspace wall and/or floor) and ducts outside conditioned spaces; U-factors for fenestration. Where there is more than one value for each component, the certificate shall list the value covering the largest area. The certificate shall list the type and efficiency of heating, cooling and service water heating equipment. Where a gas fired unvented room heater, electric furnace, and/or baseboard electric heater is installed in the residence, the certificate shall list "gas fired unvented room heater", "electric furnace", or "baseboard electric heater" as appropriate. An efficiency shall not be listed for gas fired unvented rom heaters, electric furnaces, or electric baseboard heaters.
In all buildings having individual dwelling units, provisions shall be made to determine the electrical energy consumed by each unit by separately metering or monitoring individual dwelling units.
Tight-fitting noncombusitble fireplace doors to control infiltration losses shall be installed on fireplace openings as provided herein:

1. Masonry fireplaces or fireplace units designed to allow an open burn.
2. Decorative appliances (ANSI Standard Z21.60 gas-log style unit) installed in vented solid fuel fireplaces.
3. Vented decorative gas fireplace applicances (ANSI Standard Z21.50 unit).

Fireplaces shall be provided with a source of combustion air as required by the fireplace construction provisions of this code.
Upon written request by a building permit applicant and/or a code enforcement official, the Secretary of State may issue an interpretation of the application of any specific requirement of this code to the proposed construction for which an application for a building permit and required plans and specifications have been filed, and concerning which there is a disagreement between the building permit applicant and the code enforcement official as to the application of such specific requirement to the proposed construction.
A request for an interpretation shall be signed by the building permit applicant and the code enforcement official, or by one or the other, individually, and shall include the following information in order to be considered complete:
1. Name, address, and telephone number of the building permit applicant and the code enforcement official;
2. A detailed description of the proposed construction, including a copy of the building permit application and plans and specifications that have been filed by the building permit applicant with the code enforcement official, as well as any other floor plans, elevations, cross-sections, details specifications, or construction documents necessary to describe adequately the proposed construction;
3. Identification of each requirement of this code for which an interpretation is requested;
4. A concise summary of the disagreement concerning the application of each such requirement for which an interpretation is requested; and
5. A copy of the building permit application denial if one was issued by the code enforcement official.
If the request is incomplete or does not otherwise contain sufficient information necessary to issue an interpretation, the Secretary of State may request clarification of the information provided or additional information necessary to issue the requested interpretation.
Upon receipt of a complete request for an interpretation signed by only the building permit applicant or the code enforcement official, the Secretary of State shall provide written notification to the party who has not signed the request for an interpretation that such request for an interpretation has been filed with the Department of State. The party receiving such notification shall have 20 days from the date of such notification in which to provide, in writing, any comments or additional information pertaining to the request for an interpretation, provided that the Commissioner may waive this deadline when warranted by extenuating circumstances.
The Secretary of State shall either issue the interpretation or provide notification of the intent not to issue an interpretation to the building permit applicant and the code enforcement official within 45 days of any of the following:
1. Receipt of a complete request for an interpretation signed by both the building permit applicant and the code enforcement official,
2. Receipt of comments when the request for an interpretation is signed by only one party, or
3. The expiration of the 20-day comment period when the request for an interpretation is signed by only one party.
Subsequent enforcement of this code with respect to the construction project for which an interpretation has been requested shall be consistent with the interpretation issued by the Secretary of State.
Prescriptive). The building thermal envelope shall meet the requirements of Table N1102.1 based on the climate zone specified in Table N1101.4.

Exceptions:


1. When a sunroom complies with Section N1102.2.11.
2. When compliance is demonstrated by computer software, as provided in Section 1101.4.1.
3. When compliance is shown in accordance with the ECCCNYS—2010.

TABLE N1102.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENTa

CLIMATE
ZONE
FENESTRATION
U
-FACTOR b
SKYLIGHT U-FACTORb CEILING
R
-VALUE
WOOD
FRAME WALL

R
-VALUEf
MASS WALL
R
-VALUEg
FLOOR
R
-VALUE
BASEMENT
WALL

R
-VALUEc
SLAB
R
-VALUE & DEPTHd
CRAWL SPACE WALL
R
-VALUEc
4 0.35 0.60 38 13 5 /10g 19 10 / 13c 10, 2 ftd 10 / 13c
5 0.35 0.60 38 20 or 13+5f 13/17g 30e 10 / 13c 10, 2 ftd 10 / 13c
6 0.35 0.60 49 20 or 13+5f 15/19g 30e 15 / 19c 10, 4 ftd 10 / 13c


For SI: 1 foot = 304.8 mm.

a. R-values are minimums. U-factors and SHGC are maximums. R-19 batts compressed into a nominal 2 × 6 framing cavity such that the R-value is reduced by R-1 or more shall be marked with the compressed batt R-value in addition to the full thickness R-value.

b. The fenestration U-factor column excludes skylights.

c. The first value shown represents minimum R-value of continuous insulated sheathing on the interior or the exterior of the wall, the second value shown represents minimum R-value of cavity insulation at the interior of the basement wall. "10/13" means R-10 continuous insulated sheathing on the interior or exterior of the home or R-13 cavity insulation at the interior of the basement wall.

d. R-5 shall be added to the required slab edge R-values for heated slabs.

e. Or insulation sufficient to fill the framing cavity, R-19 minimum.

f. "13+5" means R-13 cavity insulation plus R-5 insulated sheathing. When structural sheathing is utilized per requirements of the Residential Code of New York State, Section R602.10 Wall Bracing, insulating sheathing with a minimum value R=2 shall be added over the required structural sheathing. All other areas must be sheathed with insulating sheathing of R=5 as indicated by the Table. If 100 percent continuous structural panel sheathing is used on a 2 by 4 wall, then R-5 continuous insulated sheathing must also be applied over the structural sheathing.

g. The second R-value applies when more than half the insulation is on the interior of the mass wall.
R -value computation. Insulation material used in layers, such as framing cavity insulation and insulating sheathing, shall be summed to compute the component R -value. The manufacturer’s settled R -value shall be used for blown insulation. Computed R -values shall not include an R -value for other building materials or air films.
U -factor alternative. An assembly with a U -factor equal to or less than that specified in Table N1102.1.2 shall be permitted as an alternative to the R -value in Table N1102.1.
TABLE N1102.1.2EQUIVALENT U-FACTORSa

CLIMATE
ZONE
FENESTRATION
U
-FACTOR
SKYLIGHT
U
-FACTOR
CEILING
U
-FACTOR
FRAME WALL
U
-FACTOR
MASS WALL
U
-FACTOR b
FLOOR
U
-FACTOR
BASEMENT
WALL

U
-FACTOR
CRAWL SPACE WALL
U
-FACTOR
4 0.35 0.60 0.030 0.082 0.141 0.047 0.059 0.065
5 0.35 0.60 0.030 0.057 0.082 0.033 0.059 0.065
6 0.35 0.60 0.026 0.057 0.060 0.033 0.050 0.065


a. Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source.

b. When more than half the insulation is on the interior, the mass wall U-factors shall be the same as the frame wall U-factor in Marine Zone 4 and Zones 5 and 6.
If the total building thermal envelope UA (sum of U -factor times assembly area) is less than or equal to the total UA resulting from using the U -factors in Table N1102.1.2, (multiplied by the same assembly area as in the proposed building), the building shall be considered in compliance with Table N1102.1. The UA calculation shall be done using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials.
U -factor. The area weighted average maximum fenestration U -factor permitted using tradeoffs from Section N1102.1.3 shall be 0.48 in Zones 4 and 5 and 0.40 in Zone 6 for vertical fenestration, and 0.75 in Zones 4 through 6 for skylights.
In areas where the basic wind speed is less than 100 mph, siding shall be attached over foam sheathing in accordance with Section 1102.1.5.1, Section 1102.1.5.2, or an approved design. In all other areas, siding attachments shall be in accordance with approved design. In no case shall the siding material be used in a manner that exceeds its application limits.

Exception:
Where the siding manufacturer has provided installation instructions for application over foam sheathing, those requirements shall apply.
Siding installed directly over foam sheathing without separation by an air space shall comply with Table 1102.1.5.1 in regard to minimum fastening requirements and maximum foam sheathing thickness limitations to support siding dead load. The siding fastener and siding installation shall otherwise comply with the Section 703.4 and Table R703.4, and in no case shall result in a less stringent fastening requirement than required by Section R703.4 or the manufacturer’s installation instructions for the specific siding material used.

Exception:
For exterior insulation and finish systems, refer to Section 703.9.

TABLE 1102.1.5.1
SIDING MINIMUM FASTENING REQUIREMENTS FOR DIRECT SIDING ATTACHMENTOVER FOAM PLASTIC SHEATHING TO SUPPORT SIDING WEIGHT1

Siding Fastener Through Foam Sheathing into: Siding Fastener Type and Minimum Size2 Siding Fastener Vertical Spacing (inches) Maximum Foam Sheathing Thickness (inches)
16"oc Fastener Horizontal Spacing 24"oc Fastener Horizontal Spacing
Siding Weight: Siding Weight:
3 psf 11 psf 25 psf 3 psf 11 psf 25 psf
Wood Framing (minimum 1- 1/4 inch penetration) 0.113" diameter nail 6 4 3 1 4 2 0.75
8 4 2 0.75 4 1.5 DR
12 4 1.5 DR 3 0.75 DR
0.120" diameter nail 6 4 3 1.5 4 2 0.75
8 4 2 1 4 1.5 0.5
12 4 1.5 0.5 3 1 DR
0.131" diameter nail 6 4 4 1.5 4 3 1
8 4 3 1 4 2 0.75
12 4 2 0.75 4 1 DR
Steel Framing (minimum penetration of steel thickness + 3 threads) #8 screw into 33 mil steel or thicker 6 3 3 1.5 3 2 DR
8 3 2 0.5 3 1.5 DR
12 3 1.5 DR 3 0.75 DR
#10 screw into 33 mil steel 6 4 3 2 4 3 0.5
8 4 3 1 4 2 DR
12 4 2 DR 3 1 DR
#10 screw into 43 mil steel or thicker 6 4 4 3 4 4 2
8 4 4 2 4 3 1.5
12 4 3 1.5 4 3 DR


For SI: 1 inch = 25.4 mm; 1 pound per square foot (psf) = 0.0479 kPa.

DR = design required

1. Tabulated requirements are based on wood framing of Spruce-Pine-Fir or any wood species with a specific gravity of 0.42 or greater in accordance with AFPA/NDS and minimum 33 ksi steel for 33 mil and 43 mil steel and 50 ksi steel for 54 mil steel or thicker.

2. Nail fasteners shall comply with ASTM F1667, except nail length shall be permitted to exceed ASTM F1667 standard lengths. Self-drilling tapping screw fasteners for connection of siding to steel framing shall comply with the requirements of AISI S230. Specified fasteners in accordance with Section R703.4, or the siding manufacturer’s approved installation instructions shall meet all other requirements in ASTM F1667, AISI S230 or be otherwise approved for the intended application.
When an airspace separates the siding from direct contact with the foam plastic sheathing, the siding shall be attached in accordance Section R703.4 and Table R703.4, to minimum 1x3 wood or minimum 33 mil steel hat channel furring placed over the foam sheathing. Furring shall be attached through the foam sheathing to wall framing in accordance with Table R703.3.2.2, in regard to minimum fastening requirements and maximum foam sheathing thickness limitations to support siding dead load. The components and cladding design wind pressure determined in accordance with Table R301.2(2), shall not exceed the allowable design wind pressure value in accordance with Table R703.3.2.2. For 25 psf siding weight in accordance with Table R703.3.2.2, the Seismic Design Category shall not exceed D 0 for 16"oc furring or C for 24"oc furring. When placed horizontally, wood furring shall be preservative treated wood or naturally durable wood and fasteners shal be corrosion resistant in accordance with Section R317. Steel hat channel furring shall have a minimum G60 galvanized coating.

Exception:
Furring shall not be required over foam plastic sheathing located behind anchored stone and masonry veneer installed in accordance with Section R703.7. Veneer ties shall be installed in accordance with Section R703.7.4.1.

TABLE 1102.1.5.2
FURRING MINIMUM FASTENING REQUIREMENTS FOR APPLICATIONOVER FOAM PLASTIC SHEATHING TO SUPPORT SIDING WEIGHT1,2

Furring Material Framing
Member
Fastener Type and Minimum Size Minimum Penetration into Wall Framing (inches) Fastener Spacing in Furring (inches) Maximum Thickness of Foam
Sheathing (inches)
Allowable Design Wind Pressure (psf)
16"oc Furring4 24"oc Furring4
Siding Weight: Siding Weight:
3
psf
11
psf
25
psf
3
psf
11
psf
25
psf
16"oc
 Furring
24"oc
 Furring
Minimum 1 × Wood Furring3 Minimum 2 × Wood Stud Nail
(0.120"  shank; 0.271" head)
1-1/4 8 4 4 1.5 4 2 1 42.6 28.4
12 4 2 1 4 1.5 0.5 28.4 18.9
16 4 2 0.5 4 1 DR 21.3 14.2
Nail
(0.131" shank; 0.281" head)
1-1/4 8 4 4 2 4 3 1 46.5 31.0
12 4 3 1 4 2 0.75 31.0 20.7
16 4 2 0.75 4 1.5 DR 23.3 15.5
#8 wood screw5 1 12 4 4 1.5 4 3 1 98.9 66.0
16 4 3 1 4 2 0.5 74.2 49.5
24 4 2 0.5 4 1 DR 35.1 23.4
1/4" lag screw5 1-1/2 12 4 4 3 4 4 1.5 140.4 93.6
16 4 4 2 4 3 1 79.0 52.7
24 4 3 1 4 2 0.5 35.1 23.4
Minimum 33mil Steel Hat Channel or Minimum 1× Wood Furring3 33 mil Steel Stud #8 screw
(0.285" head)
Steel thickness +3 threads 12 3 1.5 DR 3 0.5 DR 52.9 35.3
16 3 1 DR 2 DR DR 39.7 26.5
24 2 DR DR 2 DR DR 26.5 17.6
#10 screw
 (0.333" head)
Steel thickness +3 threads 12 4 2 DR 4 1 DR 62.9 41.9
16 4 1.5 DR 3 DR DR 47.1 31.4
24 3 DR DR 2 DR DR 31.4 21.0
43 mil or thicker Steel Stud #8 screw
(0.285" head)
Steel thickness +3 threads 12 3 1.5 DR 3 0.5 DR 69.0 46.0
16 3 1 DR 2 DR DR 51.8 34.5
24 2 DR DR 2 DR DR 34.5 23.0
#10 screw
 (0.333" head)
Steel thickness +3 threads 12 4 3 1.5 4 3 DR 81.9 54.6
16 4 3 0.5 4 2 DR 61.5 41.0
24 4 2 DR 4 0.5 DR 35.1 23.4


For SI: 1 inch = 25.4 mm; 1 pound per square foot (psf) = 0.0479 kPa. DR = design required.

1. Table values are based on: (1) minimum 3/4-inch (19.1 mm) thick wood furring and wood studs of Spruce-Pine-Fir or any softwood species with a specific gravity of 0.42 or greater per AFPA/NDS, (2) minimum 33 mil steel hat channel furring of 33 ksi steel, and (3) steel framing of indicated nominal steel thickness and minimum 33 ksi steel for 33 mil and 43 mil steel and 50 ksi steel for 54 mil steel or thicker. Steel hat channel shall have a minimum 7/8-inch (22.2 mm) depth.

2. Nail fasteners shall comply with ASTM F1667, except nail length shall be permitted to exceed ASTM F1667 standard lengths. Self-drilling tapping screw fasteners for connection of siding to steel framing shall comply with the requirements of AISI S230. Specified fasteners in accordance with Section R703.4 or the siding manufacturer’s approved installation instructions shall meet all other requirements in ASTM F1667 or AISI S230 or be otherwise approved for the intended application.

3. Where the required siding fastener penetration into wood material exceeds 3/4 inch (19.1 mm) and is not more than 11/2 inches (38.1 mm), a minimum 2 × wood furring shall be used unless approved deformed shank siding nails or siding screws are used to provide equivalent withdrawal strength allowing connection to 1× wood furring.

4. Furring shall be spaced a maximum of 24 inches o.c. in a vertical or horizontal orientation. In a vertical orientation, furring shall be located over wall studs and attached with the required fastener spacing. In a horizontal orientation, furring strips shall be fastened at each stud intersection with a number of fasteners equivalent to the required fastener spacing. In no case shall fasteners be spaced more than 24 inches (0.6 m) apart.

5. Lag screws shall be installed with a standard cut washer. Lag screws and wood screws shall be pre-drilled in accordance with AF&PA/NDS. Approved self-drilling screws of equal or greater shear and withdrawal strength shall be permitted without pre-drilling
When Section N1102.1 would require R-38 in the ceiling, R-30 shall be deemed to satisfy the requirement for R-38 wherever the full height of uncompressed R-30 insulation extends over the wall top plate at the eaves. Similarly R-38 shall be deemed to satisfy the requirement for R-49 wherever the full height of uncompressed R-38 insulation extends over the wall top plate at the eaves. This reduction shall not apply to the U -factor alternative approach in Section N1102.1.2 and the Total UA alternative in Section N1102.1.3.
Unvented attic assemblies (spaces between the ceiling joists of the top story and the roof rafters) shall be permitted in one- and two-family dwellings and multiple single-family dwellings (townhouses), as defined by the Residential Code of New York State, if all of the following conditions are met:
1. The unvented attic space is completely contained within the building thermal envelope.
2. No interior vapor retarders (Class I or II) are installed on the ceiling side (attic floor) of the unvented attic assembly.
3. Where wood shingles or shakes are used, a minimum 1/4-inch (6 mm) vented air space separates the shingles or shakes and the roofing underlayment above the structural sheathing.
4. In Climate Zones 5 and 6, any air-impermeable (eg., spray foam) insulation shall be a Class III vapor retarder, or shall have a vapor retarder coating or covering in direct contact with the underside of the insulation.
5. Either Item 5.1, 5.2 or 5.3 shall be met, depending on the air permeability of the insulation directly under the structural roof sheathing.
5.1. Air-impermeable (eg., spray foam) insulation only. Insulation shall be applied in direct contact with the underside of the structural roof sheathing.
5.2. Air-permeable (eg., fiberglass or cellulose) insulation only. In addition to the air-permeable installed directly below the structural sheathing, rigid board sheet insulation shall be installed directly above the structural roof sheathing as specified in Table R1102.2.1.1 for condensation control.
5.3. Air-impermeable and air-permeable insulation. The air-impermeable (eg., spray foam) insulation shall be applied in direct contact with the underside of the structural roof sheathing as specified in Table R1102.2.1.1 for condensation control. The air-permeable (eg., fiberglass or cellulose) insulation shall be installed directly under the air-impermeable (eg., spray foam) insulation.

TABLE N1102.2.1.1
INSULATION FOR CONDENSATION CONTROL

CLIMATE ZONE MINIMUM RIGID BOARD OR AIR-IMPERMEABLE INSULATION R-VALUEa
4 R-15
5 R-20
6 R-25


a. Contributes to, but does not supersede Section N1102.1.1 requirements.
Where Section N1102.1 would require insulation levels above R-30 and the design of the roof/ceiling assembly does not allow sufficient space for the required insulation, the minimum required insulation for such roof/ceiling assemblies shall be R-30. This reduction of insulation from the requirements of Section N1102.1 shall be limited to 500 square feet (46 m 2 ) or 20 percent of the total insulated ceiling area, whichever is less. This reduction shall not apply to the U -factor alternative approach in Section N1102.1.2 and the Total UA alternative in Section N1102.1.3.
Access doors from conditioned spaces to unconditioned spaces (e.g., attics and crawl spaces) shall be weatherstripped and insulated to a level equivalent to the insulation on the surrounding surfaces. Access shall be provided to all equipment which prevents damaging or compressing the insulation. A wood framed or equivalent baffle or retainer is required to be provided when loose fill insulation is installed, the purpose of which is to prevent the loose fill insulation from spilling into the living space when the attic access is opened, and to provide a permanent means of maintaining the installed R -value of the loose fill insulation.
Mass walls, for the purposes of this chapter, shall be considered above grade walls of concrete block, concrete, insulated concrete form (ICF), masonry cavity, brick (other than brick veneer), earth (adobe, compressed earth block, rammed earth) and solid timber/logs.
Steel-frame ceilings, walls and floors shall meet the insulation requirements of Table N1102.2.5 or shall meet the U -factor requirements in Table N1102.1.2. The calculation of the U -factor for a steel-frame envelope assembly shall use a series-parallel path calculation method.

TABLE N1102.2.5
STEEL-FRAME CEILING, WALL AND FLOOR INSULATION (R-VALUE)

WOOD FRAME R-VALUE REQUIREMENT COLD-FORMED STEEL EQUIVALENT
R
-VALUEa
Steel Truss Ceilingsb
R-30 R-38 or R-30 + 3 or R-26 + 5
R-38 R-49 or R-38 + 3
R-49 R-38 + 5
Steel Joist Ceilingsb
R-30 R-38 in 2 × 4 or 2 × 6 or 2 × 8
R-49 in any framing
R-38 R-49 in 2 × 4 or 2 × 6 or 2 × 8 or 2 × 10
Steel Framed Wall
R-13 R-13 + 5 or R-15 + 4 or R-21 + 3 or R-0 + 10
R-20 R-13 + 9 or R-19 + 8 or R-25 + 7 - R-13 + 10 or R-19 + 9 R-25
Steel Joist Floor
R-30 R-38 in 2 × 6 or R-30 +3 or R-26 + 5
R-19 R-19 + 6 in 2 × 6 or R-19 + 12 in 2 × 8 or 2 × 10


For SI: 1 inch = 25.4 mm.

a. Cavity insulation R-value is listed first, followed by continuous insulation R-value.

b. Insulation exceeding the height of the framing shall cover the framing.
Floor insulation shall be installed to maintain permanent contact with the underside of the subfloor decking.
Exterior walls associated with conditioned basements shall be insulated from the top of the basement wall down to 10 feet (3048 mm) below grade or to the basement floor, whichever is less. Walls associated with unconditioned basements shall meet this requirement unless the floor overhead is insulated in accordance with Sections N1102.1 and N1102.2.6.
Slab-on-grade floors with a floor surface less than 12 inches below grade shall be insulated in accordance with Table N1102.1. The 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 distance provided in Table N1102.1 by any combination of vertical insulation, insulation extending under the slab or insulation extending out from the building. Insulation extending away from the building shall be protected by pavement or by a minimum of 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. Slab-edge insulation is not required in jurisdictions designated by the code official as having a very heavy termite infestation.
As an alternative to insulating floors over crawl spaces, insulation of crawl space walls when the crawl space is not vented to the outside is permitted. Crawl space wall insulation shall be permanently fastened to the wall and extend downward from the floor to the finished grade level and then vertically and/or horizontally for at least an additional 24 inches (610 mm). Exposed earth in unvented crawl space foundations shall be covered with a continuous Class I vapor retarder. All joints of the vapor retarder shall overlap by 6 inches (152 mm) and be sealed or taped. The edges of the vapor retarder shall extend at least 6 inches (152 mm) up the stem wall and shall be attached to the stem wall.
Insulation shall not be required on the horizontal portion of the foundation that supports a masonry veneer.
For sunroom additions not exceeding 500 square feet, the minimum ceiling insulation R -values shall be R-19 in Zone 4 and R-24 in Zones 5 and 6. The minimum wall R -value shall be R-13 in all zones. New wall(s), windows and doors separating such sunroom addition from conditioned space shall meet the building thermal envelope requirements of Table N1102.1. Refer to Section 1102.3. for allowable sunroom fenestration U -factors.
Fire-resistance-rated construction separating dwelling units in two-family dwellings and multiple single-family dwellings (townhouses) shall be insulated to no less than R-10 and the walls shall be air sealed in accordance with Section N1102.4.1 of this chapter.
U -factor. An area-weighted average of fenestration products shall be permitted to satisfy the U -factor requirements.
Up to 15 square feet (1.4 m 2 ) of glazed fenestration per dwelling unit shall be permitted to be exempt from U -factor and SHGC requirements in Section N1102.1. This exemption shall not apply to the U -factor alternative approach in Section N1102.1.2 and the Total UA alternative in Section N1102.1.3.
One side-hinged opaque door assembly up to 24 square feet (2.22 m 2 ) in area is exempted from the U -factor requirement in Section N1102.1. This exemption shall not apply to the U -factor alternative approach in Section N1102.1.2 and the Total UA alternative in Section N1102.1.3.
U -factor. For Zones 4 through 6 the maximum fenestration U -factor shall be 0.50 and the maximum skylight U -factor shall be 0.75. New windows and doors separating the sunroom from conditioned space shall meet the building thermal envelope requirements of Table N1102.1.
Where some or all of an existing fenestration unit is replaced with a new fenestration product, including sash and glazing, the replacement fenestration unit shall meet the applicable requirements for U -factor in Table 1102.1.1, where required by Section 101.4.3.2.
The building thermal envelope shall be durably sealed to limit infiltration. The sealing methods between dissimilar materials shall allow for differential expansion and contraction. The following shall be caulked, gasketed, weatherstripped or otherwise sealed with an air barrier material, suitable film or solid material.
1. All joints, seams and penetrations.
2. Site-built windows, doors and skylights.
3. Openings between window and door assemblies and their respective jambs and framing.
4. Utility penetrations.
5. Dropped ceilings or chases adjacent to the thermal envelope.
6. Knee walls.
7. Walls and ceilings separating the garage from conditioned spaces.
8. Behind tubs and showers on exterior walls.
9. Common walls between dwelling units.
10. Attic access openings.
11. Rim joists junctions.
12. Sill plates and headers. Foam plastic (spray foam insulation) shall be permitted to be spray applied to a sill plate, header, and the rim joists without the thermal barrier as specified in the Residential Code of New York State, Section 314.4 subject to all of the following:
a. The maximum thickness of the foam plastic shall be 31/4 inches (83 mm).
b. The density of the foam plastic shall be in the range of 0.5 to 2.0 pounds per cubic foot (24 to 32 kg/m3).
c. The foam plastic shall have a flame spread index of 25 or less and an accompanying smoke developed index of 450 or less when tested in accordance with ASTM E 84.
13. Other sources of infiltration.

TABLE N1102.4.2
AIR BARRIER AND INSULATION INSPECTION COMPONENT CRITERIA

COMPONENT CRITERIA
Air barrier and thermal barrier Exterior thermal envelope insulation for framed walls is installed in substantial contact and continuous alignment with building envelope air barrier.
Breaks or joints in the air barrier are filled or repaired.
Air-permeable insulation is not used as a sealing material.
Air-permeable insulation is inside of an air barrier.
Ceiling/attic Air barrier in any dropped ceiling/soffit is substantially aligned with insulation and any gaps are sealed.
Attic access (except unvented attic), knee wall door, or drop down stair is sealed.
Walls Corners and headers are insulated.
Junction of foundation and sill plate is sealed.
Windows and doors Space between window/door jambs and framing is sealed.
Rim joists Rim joists are insulated and include an air barrier.
Floors (including above-garage and cantilevered floors) Insulation is installed to maintain permanent contact with underside of subfloor decking.
Air barrier is installed at any exposed edge of insulation.
Crawl space walls Insulation is permanently attached to walls.
Exposed earth in unvented crawl spaces is covered with Class I vapor retarder with overlapping joints taped.
Shafts, penetrations Duct shafts, utility penetrations, knee walls and flue shafts opening to exterior or unconditioned space are sealed.
Narrow cavities Batts in narrow cavities are cut to fit, or narrow cavities are filled by sprayed/blown insulation.
Garage separation Air sealing is provided between the garage and conditioned spaces.
Recessed lighting Recessed light fixtures are air tight, IC rated, and sealed to drywall. Exception—fixtures in conditioned space.
Plumbing and wiring Insulation is placed between outside and pipes.
Batt insulation is cut to fit around wiring and plumbing, or sprayed/blown insulation extends behind piping and wiring.
Shower/tub on exterior wall Showers and tubs on exterior walls have insulation and an air barrier separating them from the exterior wall.
Electrical/phone box on exterior walls Air barrier extends behind boxes or air sealed-type boxes are installed.
Common wall Air barrier is installed in common wall between dwelling units.
HVAC register boots HVAC register boots that penetrate building envelope are sealed to subfloor or drywall.
Fireplace Fireplace walls include an air barrier.
N1102.4.3 Air sealing and insulation. Building envelope air tightness and insulation installation shall be demonstrated to comply with one of the following options given by Sections N1102.4.3.1 or N1102.4.3.2.
N1102.4.3.1 Testing option. Building envelope tightness and insulation installation shall be considered acceptable when tested air leakage is less than seven air changes per hour (ACH) when tested with a blower door at a pressure of 33.5 psf (50 Pa) as verified using instruments and procedures specified in ASHRAE/ASTM E779. The test shall be conducted by a qualified person, who shall demonstrate competence to the satisfaction of the code enforcement official for the conduct of such tests. For the purpose of this section, ACH50 shall mean air changes per hour of infiltration into a house as measured with a blower door at 50 pascals of pressure, in accordance with ASHRAE/ASTM E779. Testing shall occur after rough in and after installation of penetrations of the building envelope, including penetrations for utilities, plumbing, electrical, ventilation and combustion appliances.

During testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed;
2. Dampers shall be closed, but not sealed, including exhaust, intake, makeup air, backdraft and flue dampers;
3. Interior doors shall be open;
4. Exterior openings for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
5. Heating and cooling system(s) shall be turned off;
6. HVAC ducts shall not be sealed; and
7. Supply and return registers shall not be sealed.

Test results shall be provided to the code enforcement official and shall include:
a. Name and place of business of the tester;
b. Address of the building which was tested;
c. Conditioned floor area of dwelling, calculated in accordance with ANSI Z65—1996, except that conditioned floor area shall include areas where the ceiling height is less than 5 feet (1524 mm);
d. Measurement of ACH50; and

e. Certification of accuracy of test results and signature of tester.
N1102.4.3.2 Visual inspection option. Building envelope tightness and insulation installation shall be considered acceptable when the items listed in Table N1102.4.2, applicable to the method of construction, are field verified. Where required by the code official, an approved party independent from the installer of the insulation, shall inspect the air barrier and insulation.
N1102.4.4 Fenestration air leakage. Windows, skylights and sliding glass doors shall have an air infiltration rate of no more than 0.3 cubic foot per minute per square foot [1.5(L/s)/m2], and swinging doors no more than 0.5 cubic foot per minute per square foot [2.5(L/s)/m2], when tested according to NFRC 400 or AAMA/WDMA/CSA101/I.S.2/A440 by an accredited, independent laboratory, and listed and labeled by the manufacturer.

Exception:
Site-built windows, skylights and doors.
N1102.4.5 Recessed lighting. Recessed luminaires installed in the building thermal envelope shall be sealed to limit air leakage between conditioned and unconditioned spaces. All recessed luminaires shall be IC-rated and labeled as meeting ASTM E283 when tested at 1.57 psf (75 Pa) pressure differential with no more than 2.0 cfm (0.944 L/s) of air movement from the conditioned space to the ceiling cavity. All recessed luminaires shall be sealed with a gasket or caulk between the housing and the interior wall or ceiling covering.
Class I or II vapor retarders are required on the interior side of frame walls in Zones 5 and 6.

Exceptions:


1. Basement walls.
2. Below grade portions of any wall.
3. Construction where moisture or its freezing will not damage the materials.
The vapor retarder class shall be based on the manufacturer’s certified testing or a tested assembly. The following shall be deemed to meet the class specified:

Class I: Sheet polyethylene, non-perforated aluminum foil

Class II: Kraft faced fiberglass batts or low perm paint (paint with 0.1 < perm < 1.0)

Class III: Latex or enamel paint
Class III vapor retarders shall be permitted where the conditions in Table N1102.5.2 are met.

TABLE N1102.5.2
CLASS III VAPOR RETARDERS

Zone Class III vapor retarders permitted for:
5 Vented cladding over OSB
Vented cladding over Plywood
Vented cladding over Fiberboard
Vented cladding over Gypsum
Insulated sheathing with R-value > R-5 in 2 × 4 wall
Insulated sheathing with R-value > R-7.5 in 2 × 6 wall
6 Vented cladding over Fiberboard
Vented cladding over Gypsum
Insulated sheathing with R-value > R-7.5 in 2 × 4 wall Insulated sheathing with R-value > R-11.25 in 2 × 6 wall


1. Spray foam with a minimum density of 2 lbs/ft3 applied to the interior cavity side of OSB, plywood, fiberboard, insulating sheathing or gypsum is deemed to meet the insulating sheathing requirement where the spray foam R-value meets or exceeds the specified insulating sheathing R-value.
For the purpose of this section vented cladding shall include the following minimum clear airspaces. Other openings with the equivalent vent area shall be permitted.
1. Stucco with a 3/8-inch clear airspace with 3/8-inch continuous slot vent openings at the top and bottom of each wall.
2. Brick with a 2-inch clear airspace behind the brick with vents at both the top and bottom of the brick. The vents shall be 3/8-inch × 2.5 inch openings every third brick at both the bottom and top.
3. Stone or masonry veneer with a 2-inch clear airspace behind the stone with vents at the top and bottom. The vents shall have at least 1 square inch of vent area for every 24 inches of wall.
4. Panel siding with 3/8-inch clear airspace with 3/8-inch continuous slot vent openings at both the top and bottom of each wall.
5. Wood, wood based, or fiber cement siding with either a 1/4-inch clear airspace; or alternatively a 1/4-inch gap between the horizontal siding laps.
6. Vinyl lap siding applied directly to a weather resistive barrier.
7. Manufactured stone veneer with a 3/8-inch clear airspace with 3/8-inch continuous slot vent openings at both the top and bottom of each wall.
8. Other approved clear air spaces and vented openings.
At least one thermostat shall be provided for each separate heating and cooling system.
Each heating and cooling system shall include at least one temperature control device.
Each dwelling unit shall have at least one thermostat capable of automatically adjusting the space temperature set point of the largest heating or cooling zone and capable of controlling the heating and cooling system on a daily schedule to maintain different temperature set points at different times of the day. This thermostat shall include the capability to set back or temporarily operate the system to maintain zone temperatures down to 55°F (13°C) or up to 85°F (29°C). The thermostat shall initially be programmed with a heating temperature set point no higher than 70°F (21°C) and a cooling temperature set point no lower than 78°F (26°C).

Exception:
Thermostats that require manual changeover between heating and cooling modes.
Heat pumps having supplementary electric-resistance heat shall have controls that, except during defrost, prevent supplemental heat operation when the heat pump compressor can meet the heating load.
Supply ducts in attics shall be insulated to a minimum of R-8. All other ducts shall be insulated to a minimum of R-6.

Exception:
Ducts or portions thereof located completely inside the building thermal envelope.
All ducts, air handlers, filter boxes and building cavities used as ducts shall be sealed. Joints and seams shall comply with Section M1601.3.1 of the Residential Code of New York State . Duct tightness shall be verified by either of the following:
Leakage to outdoors shall be less than or equal to 8 cfm (226.5 L/min) per 100 ft 2 (9.29 m 2 ) of conditioned floor area or a total leakage less than or equal to 12 cfm (12 L/min) per 100 ft 2 (9.29 m 2 ) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the entire system, including the manufacturer’s air handler enclosure. All register boots shall be taped or otherwise sealed during the test.
Total leakage shall be less than or equal to 6 cfm (169.9 L/min) per 100 ft 2 (9.29 m 2 ) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the roughed in system, including the manufacturer’s air handler enclosure. All register boots shall be taped or otherwise sealed during the test. If the air handler is not installed at the time of the test, total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 ft 2 (9.29 m 2 ) of conditioned floor area.

Exception:
Duct tightness test is not required if the air handler and all ducts are located within conditioned space.

The building duct and plenum system shall meet the requirements above as verified using instruments and procedures specified in ANSI/ASHRAE 152 and ASTM E1554 Test Method A. Tests at other test pressures are permitted to be used if they are converted to equivalent leakage at 25 pascals (Pa) of pressure, and such equivalence is demonstrated to the satisfaction of the code enforcement official. The test shall be conducted by a qualified person, who shall demonstrate competence to the satisfaction of the code enforcement official for the conduct of such tests. For the purpose of this section CFM 25 shall mean the leakage from all ducts and plenums in cubic feet per minute measured at 25 pascals of pressure in accordance with ANSI/ASHRAE 152 or ASTM E1554. Test results shall be provided to the code enforcement official and shall include:
1. Name and place of business of the tester;
2. Address of the building which was tested;
3. Conditioned floor area of dwelling, calculated in accordance with ANSI Z65, except that conditioned floor area shall include areas where the ceiling height is less than 5 feet (1524 mm);
4. Measurement of CFM25; and
5. Certification of accuracy of test results and signature of tester.
Building framing cavities shall not be used as supply ducts.
Mechanical system piping capable of carrying fluids above 105°F (40°C) or below 55°F (13°C) shall be insulated to a minimum of R-3.
All circulating service hot water piping shall be insulated to at least R-2. Circulating hot water systems shall include an automatic or readily accessible manual switch that can turn off the hot water circulating pump when the system is not in use.
Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating.
Heating and cooling equipment shall be sized as specified in Section M1401.3. (ACCA Manual "J").
Snow- and ice-melting systems supplied through energy service to the building shall include automatic controls capable of shutting off the system when the pavement temperature is above 50°F (10°C) and no precipitation is falling and an automatic or manual control that will allow shutoff when the outdoor temperature is above 40°F (5°C).
Swimming pools shall be provided with energy conserving measuring in accordance with Sections 1103.8.1, 1103.8.2 and 1103.8.3.
All pool heaters shall be equipped with a readily accessible on-off switch to allow shutting off the heater without adjusting the thermostat setting. Pool heaters fired by natural gas or LPG shall not have continuously burning pilot lights.
Heated pools shall be equipped with a vapor-retardant pool cover on or at the water surface. Pools heated to more than 90°F (32°C) shall have a pool cover with a minimum insulation value of R-12.

Exception:
Pools deriving over 60 percent of the energy for heating from site-recovered energy or solar energy source.
Time switches that can automatically turn off and on heaters and pumps according to a preset schedule shall be installed on swimming pool heaters and pumps.

Exceptions:
1. Where public health standards require 24-hour pump operation.
2. Where pumps are required to operate solar- and waste-heat-recovery pool heating systems.
A minimum of 50 percent of the lamps in permanently installed lighting fixtures shall be high-efficacy lamps.
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