Overview
The Belimo LF24-SR US is a spring-return, direct-coupled damper actuator designed for modulating fail-safe control in HVAC systems.
Features
- Proportional 2-10 VDC modulating control for fine damper positioning
- Fail-safe spring return system automatically resets damper on power loss
- Brushless DC motor managed by ASIC for reliable performance
- Compact direct-coupled mounting fits standard damper shafts
Specifications
- Torque: 35 in-lb
- Nominal Voltage: AC/DC 24 V
- Control Signal: 2-10 V DC modulating
- Maximum Damper Area: Up to 8.8 sq. ft.
- Fail-Safe Running Time: < 25 seconds
Applications
- Modulating fail-safe damper control in commercial HVAC units
- Temperature control and volume regulation in air distribution networks



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