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As a genuine Johnson Controls component
Zero Pressure Differential: The normally closed design ensures the valve remains shut without requiring system pressure to maintain the seal
Durable Construction: Features stainless steel bellows and a temperature-compensated time relay for accurate performance from -40°F to 140°F
This compact component is a standard for contractors looking to improve system reliability and ensure backup pump availability during peak loads
this unit is engineered for systems utilizing R-22 refrigerant
Lochinvar & A.O. Smith 100288429 Switch 322838-753 As a genuine Johnson ControlsThe Lochinvar & A. O. Smith 100288429 Switch is a critical safety component designed for precise air pressure sensing in high efficiency heating systems. This OEM replacement part is factory calibrated to a 3. 90" water column (WC) set point, serving as a primary air proving switch to ensure the blower motor is moving sufficient combustion air before the ignition sequence begins. Engineered for compatibility with specific Lochinvar boilers and A. O.