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verifying the differential pressure with a manometer is recommended before replacing the high-limit safety switch
Key Benefits for Technicians OEM Precision: Genuine Reznor 201160 part ensures exact calibration for high altitude HVAC applications
compatible with standard 1" blower shafts used in many Rheem and Ruud furnaces and air handlers
Can I use this to replace a different brand of 50A contactor
Lochinvar & A.O. Smith 100074348 PCB 318518-761 verifying the differential pressure withThe Lochinvar & A. O. Smith 100074348 PCB is a critical OEM replacement control board designed for high efficiency tankless water heaters and select boiler models. Specifically engineered for 66J IN and 66J OS series units, this printed circuit board acts as the central intelligence for the system, regulating the ignition sequence, monitoring flame rectification, and processing data from integrated safety sensors. To ensure peak energy efficiency and
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