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BELIMO FSLF24 Spring Return Actuator

  • $194.78


Fire & Smoke Actuator, 30 in-lb [3.5 Nm] from 32...350°F [0...177°C], Spring return, AC/DC 24 V, On/Off

BULK ORDERS OR LESS COMMON PRODUCTS MAY REQUIRE ADDITIONAL TIME FOR SHIPPING. CONTACT US VIA PHONE OR EMAIL TO REQUEST MORE INFORMATION ON AVAILABILITY, AND FOR PART NUMBERS NOT LISTED

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.

Technical Data and Specifications:

  • Power supply: FSLF24(-S)(-FC) US 24 VAC ± 20%, 50/60 Hz
  • Power consumption, 24 VAC:
    • running: 50/60 Hz, 15 VA
    • holding: 50/60 Hz 6.5 VA
    • end stop: 50/60 Hz 25 VA
  • Fusing*: FSLF24 1 amp slow blow
  • Transformer sizing: 25 VA per 24 VAC actuator
  • Electrical connection: FSLF24 US 3 ft, 18 ga, 2 color coded leads
  • Overload protection: electronic throughout 0 to 95° rotation, auto-restart after temporary overload (FSLF120 US grounded enclosure)
  • Control: microprocessor
  • Angle of rotation: 95°
  • Torque: 30 in-lb [3.5 Nm] minimum from 32°F to 350°F [0°C to 177°C]
  • Direction of rotation: spring can be selected by CCW/CW mounting
  • Position indication: visual indicator, 0° to 95°
  • Running time:
    • motor: < 15 sec at rated voltage and torque 32°F to +122°F [0°C to +50°C]
    • spring: <15 seconds at rated voltage and torque
  • Humidity: 5 to 95% RH non-condensing
  • Ambient temperature: 32°F to 122°F [0°C to 50°C]
  • Storage temperature: -40°F to 176°F [-40°C to 80°C]
  • Housing: NEMA type 1
  • Housing material: zinc coated steel
  • Gears: permanently lubricated
  • Agency listings: cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1, CSA C22.2 No.24-93

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