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NYC Mechanical Code

§ 313.3.8 — § 313.3.8

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What is NYC MC § 313.3.8?

Quick Answer

This section mandates that evaporative and air-cooled condensers installed on non-grade roofs or floors must utilize vibration isolators with specified efficiency and deflection standards. It also requires the inclusion of vibration cutoff switches on these condensers. Applies to building owners with such installations.

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

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313.3.8 Evaporative condensers.

MC § 313.3.8

Evaporative and air-cooled condensers located on a roof or floor other than a floor on grade shall be mounted on vibration isolators providing a minimum isolation efficiency of 90 percent at fan rotor rpm with a maximum static deflection of 4 inches (101.6 mm). Each isolator shall incorporate a leveling device and a resilient pad having a minimum thickness of 1/4 inch (6.4 mm). Vibration cutoff switches shall be provided on evaporative condensers. (Am. L.L. 2023/077, 6/11/2023, eff. 6/11/2023) Editor's note: For related unconsolidated provisions, see Appendix A at L.L. 2023/077.

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