Cleaning the Burner Assembly
1 − Turn off electrical and gas power supplies to furnace. Remove upper and lower furnace access panels.
2 − Mark all gas valve wires and disconnect them from the valve.
3 − Disconnect the gas supply line from the gas valve. Re- move gas valve/manifold assembly.
4 − Mark and disconnect sensor wire from the sensor. Dis- connect
5− Remove burner box cover and remove four screws which secure burner box assembly to vest panel. Re- move burner box from the unit. G61MP−135 only − Re- move and discard two additional shipping screws. See figure 41.
6 − 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.
7− Reconnect the sensor wire and reconnect the 2−pin plug to the ignitor wiring harness.
8 − Reinstall the burner box assembly using the existing four screws. Make sure that the burners line up in the center of the burner ports.
9 − Reinstall the gas valve manifold assembly. Reconnect the gas supply line to the gas valve. Reinstall the burn- er box cover.
10 − Reconnect the gas valve wires to the gas valve.
11 − Replace the blower compartment access panel.
12 − Refer to instruction on verifying gas and electrical con- nections when re−establishing supplies.
13 − 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.
14 − Replace heating compartment access panel.
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