McDonnell & Miller 150S-MD Controller Els PW 29614 while the screw terminals ensure

while the screw terminals ensure secure electrical connections for 22 to 14 AWG wiring

making it a critical component for professional maintenance and repair of rooftop units and furnaces

or internal resistance due to sharp bends in the lead

Connect the low-pressure port to the suction side of the fan using 3/8" O

ensuring high combustion efficiency

McDonnell & Miller 150S-MD Controller Els PW 29614 while the screw terminals ensureThe 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