Lochinvar & A.O. Smith 100113143 Switch 322838-752 It will not open if

It will not open if the inlet and outlet pressures are equalized or if the system pressure is below this threshold

and main burner flame

Rugged Construction: Features corrosion-resistant internal components and a robust design capable of withstanding emergency exposure up to 65 PSI

Engineered for the field

Designed for flame detection in gas-fired applications

Lochinvar & A.O. Smith 100113143 Switch 322838-752 It will not open ifThe Lochinvar & A. O. Smith 100113143 Blocked Inlet Switch is a critical safety component designed for high efficiency commercial water heaters and boilers, including the Cyclone BTH and State SUF series. This genuine OEM replacement part acts as a normally closed (NC) pressure sensor calibrated to 2. 5" WC. Its primary function is to monitor the integrity of the air intake system, ensuring the combustion blower receives adequate airflow for safe