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Always verify the part number against your specific model's exploded view diagram
Precise Thermal Protection: Strictly calibrated to open at 250°F and close at 220°F for consistent safety cycles
withstanding fluid temperatures up to 212°F and glycol solutions up to 60%
making it suitable for low-pressure steam service
Lochinvar & A.O. Smith 100166242 Pressure Switch Els PW 17895 Always verify the part numberThe Lochinvar & A. O. Smith 100166242 Pressure Switch is a critical safety component designed for precise draft and combustion monitoring in high efficiency heating systems. Set to a fixed . 27" WC (Water Column) trip point, this SPDT (Single Pole Double Throw) switch ensures that the inducer motor or blower is generating the correct static pressure before allowing the ignition sequence to proceed. As a veteran tech, you know that a failing switch
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