Description
The iO HVAC Controls FP18-MOTOR is a direct-coupled, non-spring return actuator designed for on/off and floating point control of dampers in HVAC systems. It mounts directly to damper shafts from 1/4″ up to 5/8″ in diameter using its standard universal clamp, with an accessory clamp available for shafts up to 3/4″. The actuator provides 90° of adjustable stroke with a visual position indicator, automatically stopping when it reaches the damper or actuator end position; gears can be manually disengaged via the release on the actuator cover. Inside, a sensorless brushless DC motor is controlled by an Application Specific Integrated Circuit (ASIC), which manages rotation and includes digital rotation sensing (DRS) to help prevent damage during a stall condition, while also reducing power consumption in holding mode. The actuator does not require separate limit switches — it’s electronically protected against overload — and ships with an anti-rotation strap to prevent lateral movement. Actuator sizing should be confirmed against the damper manufacturer’s specifications prior to installation.
Features:
- On/off and floating point control for HVAC damper applications
- Direct coupled, non-spring return design with universal clamp for 1/4″ to 5/8″ shafts (accessory clamp available up to 3/4″)
- 90° adjustable stroke with visual position indicator and automatic end-position stop
- Sensorless brushless DC motor with ASIC-controlled digital rotation sensing (DRS) to prevent stall damage
- Electronically protected against overload; no limit switches required
- Anti-rotation strap included to prevent lateral movement
- Reduced power consumption in holding mode
- Manual gear release for disengagement
Specifications:
- Actuator Type: 3-Wire Floating Point
- Input Voltage: 24VAC
- VA: 2.5
- Amps: 0.06
- Torque: 18 in-lb
- Stroke: 90° (Adjustable)
- Travel Time: 60 seconds @ 90°
- Dimensions: 4.57″H x 2.6″W x 2.34″D
Jim W. (verified owner) –