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// CODE SNIPPET

Section 705 Combined Use of Inside and Outdoor Air (Condition 2)

NYC Mechanical Code 2008 > 7 Combustion Air > 705 Combined Use of Inside and Outdoor Air (Condition 2)
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705.1 General

This section shall apply only to appliances located in unconfined spaces in buildings of unusually tight construction. Combustion air supplied by a combined use of indoor and outdoor air shall be supplied through openings and ducts extending to the appliance room or to the vicinity of the appliance.

705.1.1 Openings and Supply Ducts

Openings shall be provided, located and sized in accordance with Sections 702.3.1 and 702.3.2; additionally, there shall be one opening to the outdoors having a free area of at least 1 square inch per 5,000 Btu/h (440 mm2/kW) of total input of all appliances in the space.

Related Code Sections


Section 705 Combustion Air, Combined Use of Inside and Outdoor Air (Condition 2)
by a combined use of indoor and outdoor air shall be supplied through openings and ducts extending to the appliance room or to the vicinity of the appliance ...
NYC Mechanical Code 2008 > 7 Combustion Air > 705 Combined Use of Inside and Outdoor Air (Condition 2)
Section 705 Combustion, Ventilation, and Dilution Air, Combined Use of Inside and Outdoor Air (Condition 2)
by a combined use of indoor and outdoor air shall be supplied through openings and ducts extending to the appliance room or to the vicinity of the appliance ...
NYC Mechanical Code 2014 > 7 Combustion, Ventilation, and Dilution Air > 705 Combined Use of Inside and Outdoor Air (Condition 2)
704.1 Combustion Air, Combination of Air From Inside and Outdoors
a combination of inside and outdoor air, prorated in accordance with Section 704.1.6. The ratio of interior spaces shall comply with Section 704.1.5. The ...
NYC Mechanical Code 2008 > 7 Combustion Air > 704 Combined Use of Inside and Outdoor Air (Condition 1) > 704.1 Combination of Air From Inside and Outdoors
704.1.6 Combustion Air, Prorating of Inside and Outdoor Air
In spaces that utilize a combination of inside and outdoor air, the sum of the ratios of all direct openings, horizontal openings, vertical openings ...
NYC Mechanical Code 2008 > 7 Combustion Air > 704 Combined Use of Inside and Outdoor Air (Condition 1) > 704.1 Combination of Air From Inside and Outdoors > 704.1.6 Prorating of Inside and Outdoor Air
704.1 Combustion, Ventilation, and Dilution Air, Combination of Air From Inside and Outdoors
using a combination of inside and outdoor air, prorated in accordance with Section 704.1.6. The ratio of interior spaces shall comply with Section ...
NYC Mechanical Code 2014 > 7 Combustion, Ventilation, and Dilution Air > 704 Combined Use of Inside and Outdoor Air (Condition 1) > 704.1 Combination of Air From Inside and Outdoors
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