McDonnell & Miller 21 Water Feeder R-410A this SPST (Single Pole Single

this SPST (Single Pole Single Throw) vacuum switch verifies that the inducer motor is moving sufficient air to ensure safe venting and combustion before the ignition sequence initiates

As a reliable Power Flame burner part

Enhanced Condensate Management: Redesigned geometry optimizes flue gas moisture drainage

this valve is factory-set at 150 psi

Common Questions: Is this drain pan compatible with all York RTUs

McDonnell & Miller 21 Water Feeder R-410A this SPST (Single Pole SingleThe McDonnell & Miller Series 21 Water Feeder (Part Number 126400) is a heavy duty, float operated make up water feeder engineered specifically for boiler receiver tanks and condensate return systems. This mechanical unit facilitates proportional feed action, ensuring a consistent water level without the abrupt surges associated with solenoid based systems. By utilizing a direct mount design with a 6 bolt 5 3 4" bolt circle, this feeder installs