Johnson Controls M9220-BGC-3 Actuator

The Johnson Controls M9220-BGC-3 is a high-torque, spring return direct coupled actuator engineered for precise on/off control of dampers in large-scale HVAC systems. Delivering a significant 177 lb-in torque (20 Nm), this unit provides the mechanical force necessary for return air, exhaust, or outside air dampers where fail-safe operation is non-negotiable. Designed for professional installation, this actuator simplifies retrofits as the direct replacement for M9216-BGC-2YK, upgrading your system to a more robust 20 Nm platform without requiring complex linkage modifications. It operates on a universal 24Vac/Vdc power supply and features a 48-inch halogen-free cable with wire leads for efficient field wiring.

This 24V damper actuator is built into a NEMA 2 (IP54) rated aluminum enclosure, protecting internal components during demanding operation. The M9220-BGC-3 includes two integrated SPDT auxiliary switches—one fixed at 11° and one adjustable—enabling seamless automation of end-stop signaling or interlocking of peripheral equipment. With an efficient 24-57 second power-on run time and a reliable 20-second spring return, it ensures rapid response during safety cycles. The integrated electronic stall detection eliminates the need for end switches, protecting the brushless DC motor from burnout and extending service life in high-duty cycle applications. Contractors can utilize the manual override crank for system commissioning or emergency positioning without restoring power.

Key Benefits

• 177 lb-in (20 Nm) Torque: High-capacity output suitable for heavy dampers and large-surface area control.
• Direct Replacement: Specifically engineered to replace the legacy M9216-BGC-2YK model with minimal footprint changes.
• Fail-Safe Reliability: Reliable spring return mechanism ensures dampers return to a safe position during power loss.
• Built-in Feedback: Dual SPDT auxiliary switches provide precise position confirmation and system synchronization.
• Durable Construction: NEMA 2 aluminum housing with electronic stall detection protects against mechanical overload.
• Versatile Mounting: Reversible design allows for easy adaptation to either clockwise or counter-clockwise fail-safe requirements.

Common Questions

Is the M9220-BGC-3 compatible with round or square shafts?
Yes, the standard shaft clamp secures effortlessly to 1/2" to 3/4" (12 to 19 mm) round shafts or 3/8" to 1/2" (10 to 14 mm) square shafts. For larger jackshafts up to 1-1/16", an optional adapter kit is available.

Can I use this actuator for proportional or floating control?
No, the M9220-BGC-3 is a two-position (on/off) actuator. For proportional 0-10V or floating control, you would require the GGx or AGx series variants, respectively.

How do the auxiliary switches function on this model?
Model BGC includes two Single-Pole, Double-Throw (SPDT) switches. One is fixed at an 11-degree rotation point, while the second is fully adjustable to suit your specific interlocking needs.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.