M9220-GGC-3 Johnson Controls Actuator

Overview

The Johnson Controls M9220-GGC-3 is a direct-mount, spring-return electric damper actuator designed for precise proportional control of dampers and valves in commercial HVAC systems. Operating on 24 VAC/VDC power, this bidirectional actuator delivers 177 lb·in (20 N·m) of running and spring-return torque, allowing it to efficiently position equipment under normal operating conditions. It features an integrated microprocessor-controlled brushless DC motor that ensures a constant run-time independent of the torque load, and it includes two built-in auxiliary switches for indicating end-stop positions or managing external switching functions.

Features

• Reversible mounting design allows the actuator to spring return in either direction, simplifying installation.
• Electronic stall detection throughout the entire rotation range deactivates the motor when an overload is detected to extend service life.
• Two integral SPDT auxiliary switches provide one fixed and one adjustable switch point with line voltage capability.
• Microprocessor-controlled brushless DC motor provides a constant run-time regardless of the required torque.
• Locking manual override with automatic release and built-in crank storage enables manual positioning of the actuator hub.
• Removable coupler easily adapts to shorter shafts and supports quick installation without a damper linkage.
• Rugged NEMA 2 (IP54) rated aluminum enclosure protects internal components from dirt and moisture.

Specifications

• Torque: 177 lb·in (20 N·m) for a single unit; supports tandem mounting for up to 531 lb·in (60 N·m)
• Supply Voltage: 24 VAC +/- 20% at 50/60 Hz or 24 VDC +/- 10%
• Power Consumption: 15.5 VA running, 7.7 VA holding
• Control Input Signal: Proportional 0-10 VDC, 2-10 VDC, or 0(4)-20 mA (via field-furnished 500 ohm resistor)
• Feedback Signal: 0(2) to 10 VDC
• Rotation Time: 150 seconds (Power On / Running); 20 seconds (Power Off / Spring Return)
• Rotational Stroke: 90° to 93° with an adjustable stop kit available to limit stroke
• Shaft Compatibility: 1/2 to 3/4 inch round shafts or 3/8 and 1/2 inch square shafts using standard clamp
• Enclosure Rating: NEMA 2 (IP54)
• Operating Temperature: -40° to 131°F (-40° to 55°C)
• Electrical Connection: 48 inch (1.2 m), 18 AWG appliance cable with integral 3/8 inch flexible metal conduit connectors

Applications

The M9220-GGC-3 actuator is widely utilized for the dependable control and precise positioning of dampers and valves within commercial heating, ventilation, and air conditioning (HVAC) systems. It is commonly implemented in air handling units, demand-controlled ventilation systems, and outdoor air intakes where fail-safe spring-return action is essential. Designed for direct coupling, it interfaces seamlessly with commercial building automation controllers providing modulating 0-10V or 4-20mA signals.