Lochinvar & A.O. Smith 100289391 Pressure Switch 320720-756 Capacity depends on the specific

Capacity depends on the specific hardware revision and network traffic requirements

5mm profile ensures seamless fitment for all TS35 DIN-mountable devices

The kit includes a high-grade Nichrome resistance coil designed for durability and consistent thermal output

this genuine OEM pressure switch prevents the burner from firing if unsafe venting conditions

Lochinvar & A.O. Smith 100289391 Pressure Switch 320720-756 Capacity depends on the specificThe Lochinvar & A. O. Smith 100289391 Pressure Switch is a critical safety component engineered for high efficiency condensing water heaters and commercial boilers. Calibrated to a 0. 55" WC (Water Column) set point, this direct replacement for 100294588 monitors the induced draft blower to ensure proper venting of combustion gases. In the field, this switch is the primary defense against blocked flue conditions and inducer motor failure, preventing