LF24-ECON-R03 US Belimo Actuator

Overview

The Belimo LF24-ECON-R03 US is a direct-coupled spring return damper actuator designed for economizer and HVAC damper control applications. It delivers 35 in-lb of torque and features integrated thermistor control inputs for fail-safe ventilation management.

Features

• Mechanical spring return ensures positive fail-safe positioning on power loss
• Integrated 3k Ohm thermistor input for direct temperature-based economizer control
• Constant running time independent of load during motor operation
• Low power consumption in holding mode
• Mechanical position indicator for quick visual inspection

Specifications

• Torque: 35 in-lb [4 Nm]
• Supply Voltage: AC/DC 24 V
• Control Signal: 3k Ohm thermistor input / minimum position override
• Feedback Signal: 2-10 VDC
• Running Time: 95 seconds motor, <25 seconds spring return

Applications

• Economizer damper control in commercial HVAC units
• Fail-safe fresh air intake and relief damper regulation