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particularly models 350 and 400 manufactured before July 2009
A shorted contactor coil
Connecting it to line voltage will cause immediate failure and potential damage to the humidifier assembly
always ensure the blower speed taps and jumpers are set to match the specific CFM requirements of the furnace being serviced to prevent premature heat exchanger fatigue
600 BTU/hr for reliable protection in high-output commercial applications
Johnson Controls A28GJ-33 Temperature Control 323055-751 particularly models 350 and 400The Johnson Controls A28GJ 33 Temperature Control is a heavy duty two stage mechanical thermostat engineered for precise thermal management in commercial HVACR and industrial process applications. This remote bulb temperature controller features a 5 foot capillary and a 3 8" x 3 1 2" sensing bulb, providing the flexibility needed for remote mounting in air ducts or tanks. Equipped with dual SPDT switches, the A28GJ 33 allows for independent control of