{"data":{"id":"us-nyc/n.y.c.-admin.-code-mc-1106","jurisdiction":"us-nyc","citation":"N.Y.C. Admin. Code § MC 1106","heading":"Section MC 1106: Machinery Room, Special Requirements","body":"1106.1 General.\n\nWhere required by Section 1104.2, the machinery room shall meet the requirements of this section in addition to the requirements of Section 1105.\n\n1106.2 Elevated temperature.\n\nThere shall not be an open flame-producing device or continuously operating hot surface over 800°F (426.7°C) permanently installed in the room.\n\n1106.3 Ammonia room ventilation.\n\nVentilation systems in ammonia machinery rooms shall be operated continuously at the ventilation rate specified in Section 1105.6.3.\n\nExceptions:\n\n1. Machinery rooms equipped with a vapor detector that will automatically start the ventilation system at the ventilation rate specified in Section 1105.6.3 and that will actuate an alarm at a detection level not to exceed 1,000 ppm.\n\n2. Machinery rooms conforming to the Class 1, Division 2, hazardous location classification requirements of the New York City Electrical Code.\n\n1106.4 Flammable refrigerants.\n\nWhere refrigerants of Groups A2, A3, B2 or B3 are used, the machinery room shall conform to the Class 1, Division 2, hazardous location classification requirements of the New York City Electrical Code.\n\nExceptions:\n\n1. Ammonia machinery rooms that are provided with ventilation in accordance with Section 1106.3. Nothing in this section shall be construed to approve the use of Group A3 and B3 refrigerants if otherwise prohibited.\n\n2. Machinery rooms for systems containing Group A2L refrigerants that are in accordance with ASHRAE 15.\n\n1106.5 Remote controls.\n\nRemote control of the mechanical equipment and appliances located in the machinery room shall be provided at an accessible location immediately outside the machinery room and adjacent to its principal entrance and shall comply with Sections 1106.5.1 and 1106.5.2.\n\n1106.5.1 Refrigeration system emergency shutoff.\n\nA 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.\n\n1106.5.2 Ventilation system.\n\nA clearly identified switch of the break-glass type or an approved tamper-resistant switch shall provide on-only control of the machinery room ventilation fans.\n\n1106.6 Reserved.","path":["New York City Administrative Code","Title 28","Chapter 8: New York City Mechanical Code"],"source_url":"https://files.amlegal.com/pdffiles/NewYorkCity/Admin/XML.zip","current_through":"Local Law 2026/135 (enacted August 31, 2026)","vintage":"","retrieved_at":"2026-09-06T02:48:57Z","sha256":"9d17670efd3f88c9a45c1c26de127e5849c3df3a5b884b3e4bf45b697a68b474","source_id":"us-nyc","stale":false,"prev":"us-nyc/n.y.c.-admin.-code-mc-1105","next":"us-nyc/n.y.c.-admin.-code-mc-1107"},"notice":"GroundRules: Original legal text. Not legal advice."}