Lochinvar & A.O. Smith 100166244 Pressure Switch Els PW 17895 this assembly is built for

this assembly is built for long-cycle life in closed-loop systems

and that the flue is free of obstructions

Always cross-reference the 155316R against your specific model number to ensure the vent restriction is correct for that heat exchanger

Featuring a Single-Pole Single-Throw (SPST) switch configuration with open-low action

providing the necessary tension for precise modulation in HVAC terminal unit control

Lochinvar & A.O. Smith 100166244 Pressure Switch Els PW 17895 this assembly is built forThe Lochinvar & A. O. Smith 100166244 is a critical OEM boiler replacement part engineered for precise air pressure monitoring within high efficiency heating systems. This 1. 06" WC SPDT pressure switch is a factory certified component designed to ensure the inducer motor or blower is generating sufficient draft before allowing the ignition sequence to proceed. As a Single Pole Double Throw (SPDT) configuration, it provides versatile switching logic,