McDonnell & Miller 94-HD Pump Controller Refrigerant Whether used as an OEM

Whether used as an OEM HVAC replacement part or a system upgrade

Avoid using heavy-grit sandpaper

03 resolves issues related to cracked ceramic insulators or clogged pilot ports that prevent a clean

refer to the 20-250 series equivalents

this SPST (Single Pole Single Throw) mechanical switch monitors differential air pressure to verify proper blower operation and venting before allowing the combustion cycle to proceed

McDonnell & Miller 94-HD Pump Controller Refrigerant Whether used as an OEMThe 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