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NYC Mechanical Code

§ 1105.9.2.1 — § 1105.9.2.1

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What is NYC MC § 1105.9.2.1?

Quick Answer

This section mandates that refrigerating systems with automatic crossover valves be designed to stop all compressors when the valve is activated. It specifies the use of dedicated pressure-sensing devices for activation and prohibits using high-pressure cutout sensors for this purpose. Applies to operators of refrigerating systems.

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

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1105.9.2.1 Automatic crossover valves.

MC § 1105.9.2.1

A refrigerating system equipped with an automatic crossover valve shall be designed, when such valve is activated, to cause all compressors on the affected system to immediately cease operating. Dedicated pressure-sensing devices located immediately adjacent to crossover valves may be used as a means for activating such crossover valve. To ensure that the automatic crossover valve system provides a redundant means of ceasing operation of the compressors in an overpressure condition, high-pressure cutout sensors associated with compressors shall not be used for purposes of activating such crossover valve.

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