McDonnell & Miller 194 Controller Refrigerant 850-6MS is the direct replacement

850-6MS is the direct replacement for 850-2MS (replacement has 6 sensor input

and various RBM-style Type 184 relays

replacing a seized or noisy inducer motor with this genuine Reznor HVAC replacement part ensures precise mechanical compatibility and electrical alignment with 208V and 230V control circuits

Industrial Reliability: Designed by AAON specifically for heavy-duty HVACR equipment and controllers

McDonnell & Miller 194 Controller Refrigerant 850-6MS is the direct replacementAs a veteran HVACR technician, you know that maintaining precise water levels in high pressure systems isn't just about efficiencyit is about safety and equipment longevity. The McDonnell & Miller 194 Low Water Cut Off and Pump Controller (Part Number 166600) is the industry standard for commercial and industrial steam boilers, engineered to operate reliably in environments up to 250 PSI max pressure. This heavy duty combination LWCO and pump