M9208-GGB-YK10 Johnson Controls Actuator

Overview

The Johnson Controls M9208-GGB-YK10 is an electric spring-return actuator designed to provide precise control of dampers in HVAC systems, specifically configured for York economizers. Operating on 24 VAC power, this bidirectional, direct-mount actuator eliminates the need for a damper linkage, simplifying installation directly onto a variety of damper shaft sizes. It incorporates a mechanical spring-return system that ensures a reliable fail-safe position when power is lost.

Features

• Direct-coupled design eliminates the need for damper linkages and allows easy mounting.
• Mechanical spring-return system provides rated torque with and without power applied.
• Microprocessor-controlled brushless DC motor ensures a constant runtime independent of torque load.
• Electronic stall detection protects the motor from overload at all angles of rotation without mechanical end switches.
• Reversible mounting design allows for either clockwise or counterclockwise operation.
• Locking manual override with auto-release facilitates manual positioning and simple commissioning.

Specifications

• Torque: 70 lb-in (8 N-m) rated running and spring-return torque.
• Supply Voltage: 24 VAC (nominal), AC/DC 24V compatible.
• Control Input Signal: Proportional / Modulating (0 to 10 VDC, or 2 to 10 VDC; adapts to 0-20 mA or 4-20 mA with an external 500-ohm resistor).
• Position Feedback: DC 0(2) to 10 VDC signal.
• Housing Rating: NEMA 2 enclosure protection.
• Rotation Range: 95 degrees of rotation with visual position indication.

Applications

• Designed for proportional modulation of dampers in Heating, Ventilating, and Air Conditioning (HVAC) systems.
• Specifically engineered for integration with York economizer systems.
• Ideal for commercial building automation and air-handling applications where reliable fail-safe operation is required.