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Fire and Smoke Damper Actuators

Belimo fire and smoke spring return damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems with a torque range from 18 in-lbs to 180 in-lbs @ 350°F. For maximum safety in all situations, the fire and smoke actuators meets all codes for commercial buildings in the U.S., passes UL 555 & UL 555S at 350ºF and is tested for 30,000 open-closed cycles with approved dampers. Belimo fire and smoke damper actuators exceeds UL’s requirement of 20,000 cycles at damper static load.

Technology that Saves Lives

The features and benefits of fire and smoke actuators:

  • ISO 9001 Certified Quality Control and a 5-year warranty assures reliable operation with exceptional customer support
  • 30 in-lbs, 70 in-lbs, 133 in-lbs and 180 in-lbs torque assortment
  • 24, 120, & 230 VAC availability to meet various wiring requirements
  • 24 VDC (FSAF only) with 2-position and proportional control to suit special installations
  • FSAF24-BAL actuator allows duct balancing capabilities from fire and smoke dampers
  • UL555 and UL555S listed with U.S. damper manufacturers
  • UL 2043 Listed for air plenum installation per NEC 300.22 and IMC Section 602
  • Product Range
  • Retrofit
  • Documentation
Product Range

FSTF Series

Belimo Fire and Smoke FSTF spring return damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems with a torque of 18 in-lbs [2 Nm] for damper sizes of 1.5 square foot @250°F and fits shaft diameters of ¼” and ½” and clamps self-centers on ½”. (Use FSTF actuators only for dampers less than 1.5 sq. ft. at 250°.)

FSLF Series

Belimo Fire and Smoke FSLF spring return damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems with a torque of 30 in-lbs [3.5 Nm] for damper sizes of 4 square foot @350°F and fits shaft diameters of 3/8” to ½” and K6 clamps standard ½” to ¾” with K6-1 clamp optional. (Use FSLF for dampers 4 sq. ft. and less at 350°F. No linkages are currently available.)

FSNF Series

Belimo Fire and Smoke FSNF spring return damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems with a torque of 70 in-lbs [8 Nm] for damper sizes of 12 square foot @350°F and fits shaft diameters of ½” to 1.05” and clamp self-centers on ½”, ¾” and 1.05”. Use FSNF for dampers 4-12 sq. ft. at 350°F and use FSAF*A for larger dampers and multi section applications. Linkages are available for FSAF*A, FSAFB, FSNF, and FSTF.

FSAFB Series

Belimo Fire and Smoke FSAFB spring return damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems with a torque of 180 in-lbs [20 Nm] for damper sizes of 18 square foot @250°F and fits shaft diameters of ½” to 1.05” and clamp self-centers on ½”, ¾” and 1.05”.

FSAF*A

Belimo Fire and Smoke FSAF*A spring return damper actuators are designed for operation in smoke and combination fire and smoke dampers in ventilation and air-conditioning systems with a torque of 180 in-lbs [20 Nm] for damper sizes of 18 square foot @350°F and fits shaft diameters of ½” to 1.05” and clamp self-centers on ½”, 1.05” and for ¾” order 23115-00001 insert.

Retrofit

Retrofit Instructions

Documentation

Technical Documentation

Application Articles