Lochinvar & A.O. Smith 100289391 Pressure Switch 320720-756 Using a genuine Bard HVAC

Using a genuine Bard HVAC control board ensures the safety circuits and blower delays function according to the original equipment design

and saturated steam up to 38 psig

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

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

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

Lochinvar & A.O. Smith 100289391 Pressure Switch 320720-756 Using a genuine Bard HVACThe 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