N.Y.C. Admin. Code § MC 405: Section MC 405: Systems Control

405.1 General.

Mechanical ventilation systems shall be provided with manual or automatic controls that will operate such systems whenever the spaces are occupied. Air-conditioning systems that supply required ventilation air shall be provided with controls designed to automatically maintain the required outdoor air supply rate during occupancy.

405.2 Manual control.

Each air distribution system shall be provided with not less than one manual control to stop the operation of the supply, return, and exhaust fan(s) in an emergency. The manual control shall be provided at an approved location. A disconnect switch shall not be considered a manual control.

405.2.1 Office buildings.

Any building where the main use or dominant occupancy is classified in occupancy group B having occupied floors located more than 75 feet (22 860 mm) above the lowest level of fire department vehicle access, where a system serves a floor or floors other than the floor on which the equipment is located, shall be provided with the following controls, in addition to the controls required by this chapter:

1. Manual controls for operating individually each air supply and each exhaust or return fan in the system located as follows:

1.1. At the Fire Command Center, and

1.2. In the room containing the affected air-handling fans.

2. Manual controls for operating individually or in groups each remote control reversible fire shutter, when such shutters are provided in accordance with the provisions of the New York City Building Code, or each smoke damper provided in accordance with the provisions of the New York City Building Code. Such controls shall be located at the Fire Command Center.