027 04299 002 York Damper Actuator (TFB24-MFT)

Overview

The York 027 04299 002 (Belimo TFB24-MFT) is a compact, spring-return damper actuator designed for fail-safe modulation in commercial HVAC systems. Utilizing Multi-Function Technology (MFT), this actuator provides 22 in-lb of torque and offers programmable control settings to meet specific application requirements. Its robust design ensures reliable performance and positive close-off for dampers up to approximately 5.5 square feet.

Features

• True spring-return operation provides reliable fail-safe positioning upon power loss
• Multi-Function Technology (MFT) allows for field programmability of control signals and feedback
• Brushless DC motor technology ensures long service life and maintenance-free operation
• Electronic overload protection throughout the 0 to 95 degree rotation prevents actuator damage
• Symmetrical design allows for easy clockwise or counter-clockwise mounting for fail-safe direction
• Visual position indicator provides clear status of the damper’s angle

Specifications

• Torque: 22 in-lb (2.5 Nm)
• Power Supply: AC/DC 24 V, 50/60 Hz
• Power Consumption: 2.5 W (Running), 1 W (Holding)
• Transformer Sizing: 4 VA
• Control Signal: Programmable (Default 2-10 VDC), 4-20 mA with resistor, PWM, or Floating Point
• Feedback Signal: 2-10 VDC (Default)
• Running Time: 150 seconds (Motor), <25 seconds (Spring)
• Enclosure Rating: NEMA 2, IP42
• Ambient Temperature: -22 to 122 F (-30 to 50 C)
• Electrical Connection: 3 ft, 18 GA plenum cable with 1/2 inch conduit connector

Applications

• Control of small to medium-sized dampers in air handling units and fan coil units
• Economizer systems requiring reliable fail-safe operation
• Classroom unit ventilators and VAV terminal units
• Retrofit projects where flexible control signal requirements are necessary