Description
The Belimo LF24-SR-E is a high-performance spring return damper actuator engineered for reliable, precise control in commercial HVAC and building automation applications. Featuring an integrated ECON (Economizer) function and a minimum position (MinPos) override capability, this actuator is purpose-built for energy-efficient ventilation and economizer damper systems where fail-safe operation is critical.
With a robust 35 in-lb torque output, the LF24-SR-E handles a wide range of damper sizes and types. The spring return mechanism ensures the damper returns to a safe, pre-defined position upon loss of power — a key safety and energy management feature. The 2–10Vdc proportional control signal provides smooth, accurate modulation, while compatibility with both 24Vac and 24Vdc power supplies makes installation flexible across a variety of control systems.
Key Features
- Spring return fail-safe operation — returns damper to safe position on power loss
- 35 in-lb (4 Nm) torque output for reliable damper control
- Proportional 2–10Vdc control signal for precise modulation
- Compatible with 24Vac and 24Vdc power supplies
- ECON (Economizer) function for energy-efficient free-cooling applications
- Minimum Position (MinPos) override for ventilation code compliance
- Compact, direct-coupled design — no crank arm or linkage required
- Belimo’s proven LF-series platform for commercial and light commercial use
Specifications
- SKU / Model: LF24-SR-E
- Brand: Belimo
- Actuator Type: Spring Return
- Torque: 35 in-lb
- Control Signal: 2–10Vdc (proportional)
- Power Supply: 24Vac / 24Vdc
- Special Functions: ECON (Economizer), MinPos (Minimum Position)
- Mounting: Direct-coupled, universal shaft clamp
Applications
- Economizer and free-cooling damper systems
- VAV (Variable Air Volume) systems
- Outside air and exhaust air dampers
- Building automation and energy management systems
- Commercial HVAC air handling units
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