Description
Belimo LF24-ECON-R03 Spring Return Damper Actuator Overview
The Belimo LF24-ECON-R03 is a direct-coupled, spring return damper actuator engineered for economizer and HVAC damper control applications. Designed for reliable fail-safe operation, this actuator automatically returns to its spring-loaded position upon loss of power, making it ideal for critical ventilation and economizer systems where default positioning is required. The integrated 3K Ohm thermistor input enables precise temperature-based modulation, supporting advanced building automation and economizer control strategies.
Key Features
- Spring return fail-safe operation — returns to default position on power loss
- 35 in-lb (4 Nm) torque output for reliable damper actuation
- 3K Ohm thermistor feedback/input for temperature-based control
- Dual-voltage compatibility: 24Vac and 24Vdc power supply
- ECON (economizer) control functionality for outdoor air and free-cooling applications
- Direct-coupled design — no crank arm or linkage required
- Compact, low-profile housing for easy installation in tight spaces
- Manual override for commissioning and maintenance convenience
Technical Specifications
- Model: LF24-ECON-R03
- Brand: Belimo
- Torque: 35 in-lb
- Control Input: 3K Ohm Thermistor
- Supply Voltage: 24Vac / 24Vdc
- Actuator Type: Spring Return
- Application: Economizer (ECON) Damper Control
- Mounting: Direct-coupled
Applications
- HVAC economizer damper control
- Outdoor air and mixed-air dampers
- Building automation and energy management systems
- Commercial and light commercial HVAC installations
- Ventilation systems requiring fail-safe positioning
Why Choose the Belimo LF24-ECON-R03?
Belimo is a globally recognized leader in actuator and valve technology. The LF24-ECON-R03 combines Belimo’s proven direct-coupled actuator platform with economizer-specific control logic and thermistor input, delivering a purpose-built solution for energy-efficient free-cooling and outdoor air management. The spring return mechanism ensures code-compliant fail-safe damper positioning, while the 24V dual-voltage design simplifies integration with standard HVAC control systems.
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