Installing a new OEM flame rod is the standard procedure for resolving intermittent flame signal loss

making it a standard choice for maintaining peak combustion efficiency in oil-fired boilers and furnaces

always verify your model number to avoid stroke length issues or improper seating

High Compatibility: Universal SPDT contacts and 120V-277V AC rating ensure integration with most burner control circuits

McDonnell & Miller 750-HW-MT-120 Control 30067439-890 Installing a new OEM flameThe McDonnell & Miller 750 HW MT 120 (Part Number 176236) is a heavy duty 120Vac high water cut off designed to provide failsafe protection for steam boilers and hot water heating systems. Engineered for commercial and industrial environments, this manual reset control prevents hazardous overfill conditions by interrupting the burner circuit or water feeder pumps the moment water levels exceed the safety probe's threshold. Unlike automatic reset