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the unit features a high-speed solenoid and a feedback loop to maintain accurate branch line pressure
Whether used as an OEM HVAC replacement part or a system upgrade
refer to the 20-250 series equivalents
Avoid using heavy-grit sandpaper
Premature failure is often caused by excessive moisture in the heat exchanger
McDonnell & Miller 94-HD Pump Controller Refrigerant the unit features a high-speedThe McDonnell & Miller 94 HD Pump Controller (Part Number 165300) is a high performance replacement head mechanism engineered for heavy duty commercial and industrial steam boiler applications. Designed specifically for Series 94 and Series 194 units, this combination low water cut off and pump control manages liquid levels in systems with a maximum pressure of 250 PSI. This assembly includes the No. 5 snap acting SPDT switch, providing reliable dual