With a factory-calibrated open temperature of 55°F and a close temperature of 45°F

The formula is particle-free and compatible with all HVACR oils and refrigerants

It utilizes a 1/2-inch bore diameter and includes dual set screws for secure attachment to the motor shaft

ensuring a secure and vibration-resistant connection between the float ball and the valve plunger

optimized for efficient air displacement

Lochinvar & A.O. Smith 100208488 Relay Board R-410A With a factory-calibrated open temperatureThe Lochinvar & A. O. Smith 100208488 Relay Board is a critical OEM replacement part engineered for high performance hydronic heating and water heating systems. As the direct replacement for RLY2049, this board facilitates precise communication between the Smart System control module and peripheral components, including pumps, fans, and gas valve relays. Designed for Lochinvar Knight boilers and A. O. Smith commercial units, it ensures accurate