Cleaning The Burner Assembly (If Needed) - Lennox EL296UH045XE36B Unit Information

Cleaning the Burner Assembly (if needed)

1 - Turn off electrical and gas power supplies to furnace.
Remove upper and lower furnace access panels.
2 - Disconnect the wires from the gas valve.
3 - Remove the burner box cover (if equipped).
4 - Disconnect the gas supply line from the gas valve. Re­
move gas valve/manifold assembly.
5 - Mark and disconnect sensor wire from the sensor. Dis­
connect wires from flame rollout switches.
6 - Disconnect combustion air intake pipe. It may be nec­
essary to cut the existing pipe to remove burner box
assembly.
7 - Remove four screws which secure burner box assem­
bly to vest panel. Remove burner box from the unit.
8 - Use the soft brush attachment on a vacuum cleaner to
gently clean the face of the burners. Visually inspect
the inside of the burners and crossovers for any block­
age caused by foreign matter. Remove any blockage.
9 - Reinstall the burner box assembly using the existing
four screws. Make sure that the burners line up in the
center of the burner ports.
10 - Reconnect the sensor wire and reconnect the 2-pin
plug to the ignitor wiring harness. Reconnect wires to
flame rollout switches.
11 - Reinstall the gas valve manifold assembly. Reconnect
the gas supply line to the gas valve. Reinstall the burn­
er box cover.
12 - Reconnect wires to gas valve.
13 - Replace the blower compartment access panel.
14 - Refer to instruction on verifying gas and electrical con­
nections when re-establishing supplies.
15 - Follow lighting instructions to light and operate fur­
nace for 5 minutes to ensure that heat exchanger is
clean and dry and that furnace is operating properly.
16 - Replace heating compartment access panel.
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