Description
Features:
  • Cut labor costs with (10 min. installation) simple direct coupling. Actuator Centers on 1/2" shaft (K6-1, 3/4" clamp optional).
  • True mechanical spring return - the most reliable failsafe.
  • Mount for clockwise or counterclockwise fail-safe.
  • Easy-to-adjust mechanical stop to limit damper rotation.
  • Check damper position easily with clear position indicator.
  • Don't worry about actuator burn-out. Belimo is overload-proof throughout rotation.
  • Need to change control direction? Do it easily with a simple switch (modulating actuators).
  • Built-in auxiliary switch is easy to use, offers feedback or signal for additional device.
  • Microprocessor-controlled brushless DC motor increases actuator life span and reliability, provides constant running time (modulating actuators). Provided on Basic Models
  • Rugged metal housing withstands rough handling in the mechanical room.
  • 3 ft. cable and conduit connector eases installation.
The LF24-S is used for On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer's specifications. Control is On/Off from an auxiliary contact, or a manual switch.

The LF series actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.
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Manuals (1)
Specs
Fail Safe Mode:
Spring Return
Actuator Type:
Two Position
Type:
Rotary
Power Supply:
24 VAC/DC
Torque:
35 lb-in
Running Time:
< 40 to 75 Seconds (motor)
< 25 Seconds @ 4°F to 122°F (spring)
< 60 Seconds @ -22°F (spring)
Power Consumption:
5W (running)
2.5W (holding)
VA Rating:
7 VA
Ambient Temperature:
-22°F to +122°F
Control Input Values:
On/Off
Manual Override:
None
Direction of Rotation:
Reversible w/ cw/ccw mounting
Warranty:
5-Year Limited Warranty
Auxiliary Switch:
1 SPDT
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