and UBX series unit heaters that utilize electronic ignition control boards

featuring the integrated lead wire required for connecting to the electronic ignition system or gas control module

for the trap vent to function as a vacuum breaker

the 3L09-6 utilizes high-speed contact separation to prevent arcing and ensure a long service life in demanding residential and light commercial heating cycles

If power is present but the gears visible through the inspection window are not moving

Lennox 61854 Burner Assembly Els PW 17895 and UBX series unit heatersThe Lennox 61854 is a critical OEM replacement pilot burner assembly engineered for high performance gas fired furnace systems. This natural gas pilot assembly features a precision drilled . 017 orifice, ensuring calibrated gas flow for reliable ignition cycles and stable flame rectification. Designed as a direct drop in for several legacy and modern units, including Lennox G11 and G12 series furnaces, this component is the industry standard for