dual-contact smoke detectors located in the elevator lobbies and the
elevator machine room. Provide dual-contact smoke detector at top of
hoistway. Include only these smoke detectors with the circuit for elevator
controller actuation of Firefighters' Service. In lieu of dual-contact
smoke detectors, use an addressable fire alarm system with listed smoke
detectors in the above stated locations. Ensure that all smoke detectors
are mounted on finished ceiling.
2.3.3
Fire Sprinklers
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NOTE: Virtually all new elevator installations
require fire sprinklers in each elevator machinery
room. Hydraulic elevators require sprinklers in the
hoistway. All hydraulic elevators require
sprinklers in the pit, and at the top of the
hoistway when the cylinder or supply line extends
above the second floor finish.
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For each elevator, provide control wiring connecting the flow switch to the
shunt trip equipped circuit breaker within the electrical panel serving the
main line disconnect. Upon flow of water, equip flow switch to
instantaneously send a signal to cause opening of shunt-trip equipped
mainline circuit breaker, in compliance with ASME A17.1, Section 2.8.2, and
send a signal to fire alarm control panel to indicate water flow condition.
Provide machine room sprinkler flow switch actuation to shunt trip all
elevator(s) served by the machine room. Provide hoistway sprinkler flow
switch actuation to shunt trip all elevator(s) in the hoistway.
2.3.4
Top-of-Car Operating Device
Provide operating device mounted on or from car crosshead, to permit
operation of car at 0.75 mps 150 fpm maximum for adjustment, maintenance,
testing, and repair. Include integral or remote safety device, continuous
pressure "UP" and "DOWN" switches or buttons, emergency stop switch, and
inspection switch.
2.3.5
Hoistway Access Switches
Provide key-operated hoistway access switch to permit limited movement of
car at terminal floors for car positioning, operative only when
"INSPECTION" switch in car operating panel is in the "INSPECTION" position.
Locate switch 1800 mm 6 feet above floor level, within 300 mm 12 inches of
hoistway entrance frame or with only ferrule exposed when located in
entrance frame.
2.3.6
Independent Service
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NOTE: Use the last bracketed sentence when there
are two or more cars in group.
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Provide exposed key-operated switch in car operating panel to enable
independent service and simultaneously disable in-car signals and
landing-call responses. Provide indicator lights that automatically
illuminate during independent service. [If one car is removed from group,
provide other car(s) responding to its hall call.]
SECTION 14240
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