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NYC Mechanical Code

§ 606.2.1 — § 606.2.1

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What is NYC MC § 606.2.1?

Quick Answer

This section mandates the installation of smoke detectors in return air systems with a design capacity exceeding 2,000 cfm, positioned upstream of filters and other connections. An exception applies if area smoke detectors connected to a fire alarm system protect all areas served by the air distribution system. Applies to building owners with such air systems.

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

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606.2.1 Return air systems.

MC § 606.2.1

Smoke detectors shall be installed in return air systems with a design capacity greater than 2,000 cfm (0.9 m 3 /s), in the return air duct or plenum upstream of any filters, exhaust air connections, outdoor air connections, or decontamination equipment and appliances. Exception: Smoke detectors are not required in the return air system where all portions of the building served by the air distribution system are protected by area smoke detectors connected to a fire alarm system in accordance with the New York City Building Code. The area smoke detection system shall comply with Section 606.4.

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