Lennox International Inc G27M Blower, Burner Flame, Venting System Inspection, Service Reminder

UPFLOW FURNACE SIDE RETURN AIR

FIGURE 4

DOWNFLOW FURNACE

FILTERS IN PLENUM RACK

FIGURE 5

Blower

Check and clean blower wheel for any debris. Blower mo&

tor is prelubricated for extended bearing life. No further lu&

brication is needed.

WARNING

Blower door must be securely in place when blower and burners are operating. Gas fumes, which could contain carbon monoxide, can be drawn into living space resulting in personal injury or death.

Burner Flame

The G27M burner flame is not adjustable; however, the flame should be inspected at the beginning of each heat& ing season and burners should be cleaned, if necessary. Burner flame should be blue when burning natural gas.

BURNER FLAME

FLAME

FLAME APPEARS BLUE IF

BURNING NAT. GAS.

HEAT

EXCHANGER

TUBE

BURNER	VEST
	PANEL

FIGURE 6

Venting System Inspection

Annually (before heating season) inspect furnace venting system, vent cap, heat exchanger and burners for corro& sion, deterioration, or deposits of debris. Remove any ob& structions.

Contact your Lennox dealer for a periodic unit inspection by a qualified service technician.

Flame Rollout Safety Switches

Your Lennox furnace is equipped with two flame roll-out safety switches which shut off the gas supply to the fur& nace in case of heat exchanger blockage. If the furnace fails to operate due to the functioning of these safety switches, DO NOT attempt to place the furnace into op& eration. Contact a qualified service technician.

Service Reminder

Call your Lennox service technician if unit is inoperative. Before calling, always check the following to be sure ser& vice is required.

1 - Check that electrical disconnect switches are ON.

2 - Are access panels securely in place?

3 - Check room thermostat for proper setting.

4 - Replace any blown fuses or reset circuit breakers.

5 - Gas valve should be ON.

6 - Air filter should not be plugged limiting air flow.

7 - Is gas turned on at meter?

8 - Is manual main shut&off valve open?

To keep your Lennox gas heating system in peak op% erating condition year after year, contact your inde% pendent Lennox dealer about a planned service pro% gram.

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