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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
Capacity depends on the specific hardware revision and network traffic requirements
and saturated steam up to 38 psig
ensuring high tensile strength and superior resistance to corrosion
The kit includes a high-grade Nichrome resistance coil designed for durability and consistent thermal output
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