McDonnell & Miller 328100 Replacement Casting 30067439-890 The Lennox 36K20 Blower Motor

The Lennox 36K20 Blower Motor is a heavy-duty

Precision Thermal Sensing: High-sensitivity NTC element delivers accurate resistance signals to the boiler control module for fuel-efficient modulation

it ensures critical over-pressure protection by utilizing an EPDM rubber diaphragm and seat disc

and 667261-C

this valve maintains consistent static superheat (factory set at 7

McDonnell & Miller 328100 Replacement Casting 30067439-890 The Lennox 36K20 Blower MotorThe McDonnell & Miller 328100 is an authentic OEM replacement casting specifically engineered for the 157 R Series low water cut off and pump controllers. This heavy duty 157 R casting provides the structural foundation for your float chamber, ensuring a pressure tight seal in high demand residential, commercial, and industrial steam boiler applications. In the field, these castings are critical for maintaining system integrity when original housings