Johnson Controls M9220-600 Kit 321702-401 Spring Return Fail-Safe: Automatically returns

Spring Return Fail-Safe: Automatically returns to the normally open position upon loss of power to prevent system freeze-ups or stagnation

Ensure the top and bottom gauge valves are perfectly aligned

Easy Installation: Designed for standard 48-frame mounting or specific unit configurations for a faster repair process

ensuring the fan does not start until the heat exchanger is sufficiently warm and continues to run briefly after the call for heat ends to dissipate residual energy

Field Adjustability: Features an accessible adjusting screw for fine-tuning the opening point

Johnson Controls M9220-600 Kit 321702-401 Spring Return Fail-Safe: Automatically returnsThe Johnson Controls M9220 600 is a heavy duty 1" Jackshaft Coupler Kit engineered for industrial grade damper actuator mounting. Specifically designed for the M9220 Series, including proportional electric spring return actuators, this kit provides a secure mechanical interface for larger shafting. It allows technicians to mount actuators on heavy duty dampers with 3 4" to 1 1 16" round shafts or 5 8" and 3 4" square shafts, ensuring slippage free