Daikin-McQuay 4009640 Control Board 318172-701 This wheel has a 12-inch

This wheel has a 12-inch diameter and a 9-inch width

Always verify your specific unit's diameter and mounting pattern before installation

ensuring the boiler remains compliant with modern safety protocols

The Siemens GMA121

the internal thermocouple-operated power unit ensures immediate gas flow interruption if the pilot flame is extinguished

Daikin-McQuay 4009640 Control Board 318172-701 This wheel has a 12-inchThe Daikin McQuay 4009640 Control Board is a critical OEM component designed for precise regulation of HVAC system sequences and safety protocols. Engineered to replace legacy McQuay furnace control modules, this PC board manages blower motor timing, ignition cycles, and diagnostic feedback loops. For technicians performing HVAC circuit board replacement, the 4009640 ensures seamless integration with existing wiring harnesses and sensors, maintaining