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NYC Mechanical Code

§ 1106.5.1 — § 1106.5.1

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What is NYC MC § 1106.5.1?

Quick Answer

This section mandates the installation of a clearly identified emergency shutoff switch for refrigeration systems in machinery rooms. The switch must control refrigerant compressors, pumps, and automatic valves, and the system must automatically shut off if refrigerant vapor concentration exceeds specified limits. Applies to building owners with refrigeration systems.

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

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1106.5.1 Refrigeration system emergency shutoff.

MC § 1106.5.1

A clearly identified switch of the break-glass type or an approved tamper-resistant switch shall provide off-only control of refrigerant compressors, refrigerant pumps, and normally closed, automatic refrigerant valves located in the machinery room. Additionally, this equipment shall be automatically shut off whenever the refrigerant vapor concentration in the machinery room exceeds the vapor detector's upper detection limit or 25 percent of the LEL, whichever is lower.

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