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combined with included reducer bushings and a 36-inch Q340 thermocouple
such as the Carrier 58WAV155-11020
The heavy-duty plated steel frame and laser-welded bellows contribute to an extended service life by resisting mechanical fatigue
its primary function is to serve as a furnace limit control rather than a cooling system thermostat
Technicians typically observe a furnace cycling on and off or the burners igniting and immediately extinguishing
Lennox 77M09 Box 323080-701 combined with included reducer bushingsThe Lennox 77M09 Burner Box Side is a vital structural and functional component engineered for high efficiency gas furnace maintenance. As a critical part of the combustion housing assembly, this side panel provides the necessary containment for the burner sparks and flames, ensuring that thermal energy is channeled directly into the heat exchanger. For contractors performing a Lennox HVAC repair, the 77M09 serves as more than just a metal plate; it
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