Lochinvar & A.O. Smith 100166238 Switch 328140-751 Direct OEM Compatibility: Replaces Lennox

Direct OEM Compatibility: Replaces Lennox 23G81 and 23G8101 models without requiring field modifications to mounting brackets or wiring harnesses

This switch is calibrated to open or close at specific WC (water column) setpoints

This unit is rated for CCW rotation from the lead end

Each 383-500-650 kit includes the blower housing

this component is essential for initiating a reliable arc in in-duct firing line burners and is a standard spec for Maxon LV Airflo Series burners

Lochinvar & A.O. Smith 100166238 Switch 328140-751 Direct OEM Compatibility: Replaces LennoxThe Lochinvar & A. O. Smith 100166238 Gas Pressure Switch is a critical safety component designed for high performance gas fired boilers and commercial water heaters. Featuring a 1 20" WC adjustable range, this manual reset gas pressure switch ensures system integrity by monitoring incoming or manifold gas pressure. If pressures deviate from the calibrated setpoint, the switch initiates a safety lockout, preventing hazardous combustion conditions.