McDonnell & Miller 51-HD Mechanism Els PW 17895 ensure your specific wiring diagram

ensure your specific wiring diagram matches the module's 24V output ratings for the gas valve and secondary controls

load calculations should be performed based on the specific current draw of your ADAP-KOOL modules to ensure the total demand does not exceed the unit’s capacity

For maximum service life

ensuring your installation meets the latest safety and environmental regulations for low-GWP systems

McDonnell & Miller 51-HD Mechanism Els PW 17895 ensure your specific wiring diagramThe McDonnell & Miller 51 HD Mechanism (Part Number 134900) is a heavy duty mechanical water feeder designed for low pressure steam and hot water boilers. Engineered for high capacity applications, this replacement water feeder head maintains precise water levels in vessels with a maximum pressure of 35 PSI. As a veteran technician knows, the heavy duty 51 HD series is built to withstand more demanding cycles than standard residential feeders,