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restoring factory-spec static pressure performance and quiet operation
making it a critical component for professional maintenance and repair of rooftop units and furnaces
and retail spaces where HVAC system security is a priority
while the screw terminals ensure secure electrical connections for 22 to 14 AWG wiring
McDonnell & Miller 150S-MD Controller Els PW 29614 restoring factory-spec static pressure performanceThe McDonnell & Miller 150S MD (Part Number 171802) is a heavy duty combination low water cut off and pump controller designed specifically for commercial and industrial steam boiler applications. This model features a snap acting SPDT switch with Maximum Differential operation, which is critical for preventing rapid pump cycling in high demand systems. It is engineered to maintain precise water levels up to a maximum pressure of 150 psi (10. 5 kg
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