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Ensure the ground wire is secured to the burner chassis and that the flame rectification signal meets the minimum microamp requirement specified by Utica-Dunkirk
the Carrier HK680025 is the direct engineering update for the HK42FZ029
Utilizing an OEM potentiometer like this one prevents common diagnostic errors and "hunting" issues caused by fluctuating resistance in inferior aftermarket alternatives
making it a rugged choice for building automation systems (BAS) and air handling units requiring consistent HVAC proportional control
Reliable Pressure Handling: Operates effectively across a 0-150 PSI pressure range for versatile system integration
Dwyer Instruments 1900-5MR Pressure Switch 319848-301 Ensure the ground wire isThe Dwyer Instruments 1900 5MR Pressure Switch is a trade reliable solution for technicians requiring precise monitoring in HVAC, refrigeration, and air handling systems. This compact low differential pressure switch is specifically engineered to handle air and non combustible gases with a setpoint range of 1. 4" w. c. to 5. 5" w. c.. The "MR" designation signifies a manual reset pressure switch, an essential safety feature for critical alarm circuits