Utica-Dunkirk 550002810 Flame Sensor 318973-401 The Lennox 59M03 Flue Transition

The Lennox 59M03 Flue Transition Kit (mfg part LB-106783A) is a critical OEM component designed to manage combustion exhaust and condensate drainage in high-efficiency 90% AFUE furnaces

the unit will stay de-energized after a low-water event until an operator manually clears the condition and presses the button

The unit comes factory-calibrated for natural gas at 3

replacing it will significantly restore the cooling capacity and speed of your HVAC unit

Converting to propane requires the correct LP orifice and assembly to ensure proper BTU output and safe combustion

Utica-Dunkirk 550002810 Flame Sensor 318973-401 The Lennox 59M03 Flue TransitionThe Utica Dunkirk 550002810 Flame Sensor is a critical OEM replacement component designed for high efficiency condensing gas boilers, specifically the SSC and VLT 299 MBH models. As a veteran technician knows, reliable flame rectification is the backbone of safe boiler operation. This flame sensor replacement kit ensures the control board receives a consistent microamp signal, preventing nuisance short cycling and ignition lockouts. Built to withstand