Required. All elevators having a travel distance of 25 feet (7,620 mm) or more above or below the primary level of elevator access for emergency firefighting or rescue personnel shall conform to the requirements of Rule 211.3 of ASME A17.1 listed in Chapter
88, Construction Codes, Uniform.
Smoke and heat detectors. Approved smoke or heat detectors shall
be installed in return air ducts or plenums in each recirculating
air system with a capacity of more than 2,000 cfm (0.94 m
3/sec) and serving more than one floor in buildings that exceed six stories in height in accordance with the mechanical code listed in Chapter
88, Construction Codes, Uniform. Actuation of the detector shall stop the fan(s) automatically and shall be of the manual-reset type. Automatic fan shutdown is not required where the system is part of an approved smoke control system.