Lochinvar & A.O. Smith 100111057 Switch 30067439-890 Key Benefits OEM Compatibility: Precision-engineered

Key Benefits OEM Compatibility: Precision-engineered as a direct replacement for 89M7601 and 100335-08 in Lennox residential and light commercial platforms

Robust Build Quality: Features a standard 3

Its compact footprint facilitates easier HVAC gas valve installation in tight furnace cabinets

Can I use this switch for different setpoints

Using it in an R-22 system will result in improper metering and potential system damage

Lochinvar & A.O. Smith 100111057 Switch 30067439-890 Key Benefits OEM Compatibility: Precision-engineeredThe Lochinvar & A. O. Smith 100111057 Blocked Inlet Switch is a critical safety component designed for high efficiency commercial water heaters and boilers, including the Cyclone Xi BTH and Shield series. This normally closed (NC) pressure switch monitors the combustion air intake, ensuring the blower assembly receives adequate airflow for safe operation. Engineered with a dedicated 0. 85" W. C. trip point, it immediately breaks the safety circuit if