027 04299 001 York Damper Actuator (AFB24-MFT)

Overview The York 027 04299 001 (Belimo AFB24-MFT) is a high-torque, spring-return damper actuator designed for fail-safe applications in HVAC systems. It utilizes Multi-Function Technology (MFT), which allows the actuator to be programmed for various control signals and parameters, providing high flexibility for both new installations and retrofit projects. It ensures that dampers return to a safe position during power loss. Features Multi-Function Technology (MFT) allows for programmable control signals (VDC, PWM, floating point, on/off) and feedback. Brushless DC motor technology provides precise control and overload protection throughout its rotation. Spring-return fail-safe mechanism ensures reliable operation during power interruptions. Manual override with a 5 mm hex crank allows for manual positioning without power. Reversible direction of rotation for both motor and fail-safe mounting. Maintenance-free design with a 5-year warranty. Specifications Torque: 180 in-lb (20 Nm) Power Supply: AC/DC 24 V, 50/60 Hz Power Consumption: 7.5 W (running), 3 W (holding) Transformer Sizing: 10 VA Angle of Rotation: 95 degrees, adjustable with mechanical end stops Running Time (Motor): 150 seconds (default); programmable from 70 to 220 seconds Running Time (Fail-Safe): <20 seconds Control Signal: 2-10 VDC (default); programmable Feedback: 2-10 VDC (default); programmable Enclosure Rating: NEMA 2 / IP54 Ambient Temperature Range: -22 to 122 degrees Fahrenheit (-30 to 50 degrees Celsius) Applications Designed for the control of dampers in HVAC systems requiring fail-safe operation. Suitable for modulating or on/off control in air handling units, VAV terminal units, and fan coil units. Often used in master-slave configurations where multiple actuators are linked to handle larger torque requirements up to 432 in-lb. Ideal for applications requiring precise position feedback and customized control parameters.