FSLF24 Fire&Smoke Actuator, 24 VAC/DC
Buy Belimo's FSLF24 from NECC
Application:
The type FSLF spring-return actuator is intended for the operation of smoke and
combination fire and smoke dampers in ventilation and air-conditioning systems. The
actuator will meet requirements of UL555 and UL555S when tested as an assembly
with the damper and will meet requirements of UBC for 15 second opening and
closing.
Square footage of damper operated will depend on make and model and the
temperature required.
Operation:
Mounting of the actuator to the damper axle shaft or jackshaft is via a cold-weld
clamp. Teeth in the clamp and V-bolt dig into the metal of both solid and hollow shafts
maintaining a perfect connection. The specially designed clamp will not crush hollow
shafts. The bottom end of the actuator is held by an anti-rotation strap or by a stud
provided by the damper manufacturer.
The actuator is mounted in its fail safe position with the damper blade(s) closed. Upon
applying power, the actuator drives the damper to the open position. The internal
spring is tensioned at the same time. If the power supply is interrupted, the spring
moves the damper back to its fail-safe position.
