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NYC Mechanical Code

§ 607.2.3 — § 607.2.3

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What is NYC MC § 607.2.3?

Quick Answer

This section mandates the installation of smoke dampers in supply air systems with a capacity of 15,000 cfm or greater, specifying their placement both upstream and downstream of filters and before any branch connections. Exceptions are noted for units serving only their respective floors or those located on roofs serving the floor below. Applies to building owners managing air-handling systems.

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

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607.2.3 Supply air systems.

MC § 607.2.3

Smoke dampers listed for use in air distribution systems shall be installed both upstream and downstream of filters and ahead of any branch connections in supply air-handling apparatus and systems having a capacity equal to or greater than 15,000 cfm (7.1 m 3 /s). Exceptions: 1. Where the air-handling unit is located on the floor that it serves and serves only that floor.

2.Where the air-handling unit is located on the roof and serves only the floor immediately below the roof.

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