it requires a minimum pressure differential of 5 PSI to move the internal diaphragm and open the flow path

The integrated warmer/cooler setpoint adjustment allows for local occupant comfort overrides

When you're on a job and need to ensure system integrity

The kit includes the necessary oil pump gasket and specialized adapter rings required for proper seating against the compressor bearing housing

The nominal timing is rated at 30 to 60 seconds for a 90-degree stroke

Lochinvar & A.O. Smith 100278134 Control 320788-702 it requires a minimum pressureThe Lochinvar & A. O. Smith 100278134 Control is a critical OEM User Interface Control board engineered for precise system management in high efficiency condensing boilers. As a direct replacement for legacy part numbers RLY20136K, RLY20136, and 100189277, this Boiler Control Board provides the necessary digital interface for real time monitoring and adjustment of combustion parameters. This HVAC Replacement Part is a standard component in the