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NYC Mechanical Code

§ 1105.6.3 — § 1105.6.3

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What is NYC MC § 1105.6.3?

Quick Answer

This section establishes the requirements for mechanical ventilation systems, specifying the minimum air exhaust rates for normal and emergency conditions. It details the ventilation rate for ammonia systems and allows for the use of multiple or multispeed fans to meet these requirements. Applies to building owners with mechanical ventilation systems.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1105.6.3 Ventilation rate.

MC § 1105.6.3

For other than ammonia systems, the mechanical ventilation systems shall be capable of exhausting the minimum quantity of air both at normal operating and emergency conditions, as required by Sections 1105.6.3.1 and 1105.6.3.2. The minimum required ventilation rate for ammonia shall be 30 air changes per hour in accordance with IIAR2. Multiple fans or multispeed fans shall be allowed to produce the emergency ventilation rate and to obtain a reduced airflow for normal ventilation.

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