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This specific model is optimized for 208V primary lines
A healthy Lennox 19W61 ignitor should read between 25 and 47 Ohms
this specific model is designed for vertical mounting to ensure internal components and bimetal elements function according to factory specifications
The 4185-00 is a standard electronic solenoid
McDonnell & Miller 150S-HD Controller 30067439-890 This specific model is optimizedThe McDonnell & Miller 150S HD (Part Number 173003) is a heavy duty combination low water cut off and pump controller head mechanism designed for industrial and commercial steam boiler applications. Operating at a maximum steam pressure of 150 PSI (10. 5 kg cm), this unit serves as a precision engineered OEM replacement head to restore critical water level management without replacing the entire float housing. This 150S series model utilizes a snap