Belimo LF24-ECON-R03 Actuator Motor

The Belimo LF24-ECON-R03 is a specialized spring-return actuator engineered specifically for economizer systems and HVAC damper control. This robust 24V actuator delivers 35 in-lb of torque, providing reliable failsafe operation via a mechanical spring-return mechanism during power loss. Designed for seamless integration, it features a built-in 3K Ohm thermal sensor and a potentiometer for precise positioning and feedback. Operating on both 24VAC and 24VDC, the LF24-ECON-R03 is a direct-coupled solution that simplifies installation on standard damper shafts. Its brushless DC motor technology ensures long-term performance and consistent timing, regardless of load. For contractors managing commercial air handling units, this unit provides the necessary precision for outdoor air intake and exhaust control, ensuring air quality and system efficiency. The rugged NEMA 2 housing protects internal components, making it a staple for high-duty cycle applications where reliability in damper motor replacement is non-negotiable.

Key Benefits for Contractors

• Mechanical Spring Failsafe: Ensures the damper returns to a safe position during power interruptions to protect system integrity.
• Integrated 3K Ohm Thermistor: Simplifies wiring by providing onboard temperature sensing for economizer logic.
• Universal Power Compatibility: Functions on both 24VAC and 24VDC for maximum field flexibility.
• High Torque Density: Provides 35 in-lb of torque in a compact footprint, ideal for tight mechanical spaces.
• Brushless DC Motor: Eliminates brush wear and provides constant torque throughout the entire stroke.

Common Questions

What is the primary function of the 3K Ohm thermistor in this model?
The integrated 3K Ohm thermistor allows the actuator to interface directly with economizer controllers to monitor mixed air or discharge air temperatures without requiring secondary external sensors.

Can the LF24-ECON-R03 be used in both clockwise and counter-clockwise failsafe applications?
Yes, the actuator is designed for reversible mounting, allowing you to select the spring-return direction (CW or CCW) by simply flipping the unit over.

Is this actuator suitable for modulating or on/off control?
This specific model is designed for economizer applications typically requiring specialized control signals; always verify the signal output of your controller matches the 3K Ohm potentiometer and thermistor requirements.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.