Lennox International Inc F8AUH Blower, Burner Flame, Venting System Inspection, Safety Reminder

UPFLOW FURNACE

SIDE RETURN AIR

FIGURE 5

Blower

Check and clean blower wheel for any debris. Blower motor is prelubricated for extended bearing life. No further lubrication 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 burner flame is not adjustable; however, the flame should be inspected at the beginning of each

heating season and burners should be cleaned, if nec2

essary. Burner flame should be blue when burning natural gas, blue/yellow when burning propane gas.

BURNER FLAME

Venting System Inspection

Annually (before heating season) inspect furnace venting system, vent cap, heat exchanger and burn2 ers for corrosion, deterioration, or deposits of debris. Remove any obstructions.

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

Flame Rollout Safety Switches

Your furnace is equipped with two flame roll-out safe2 ty switches which shut off the gas supply to the fur2 nace in case of heat exchanger blockage. If the fur2 nace fails to operate due to the functioning of these safety switches, DO NOT attempt to place the furnace into operation. Contact a qualified service technician.

Safety Reminder

Call a qualified service technician if unit is inopera2 tive. Before calling, always check the following to be sure service 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 shut6off valve open?

To keep your gas heating system in peak operating condition year after year, contact your dealer about a planned service program.

Safety Precautions

If you discover any of the following, shut down your unit, and contact your dealer for an inspection by a qualified technician.

S If you repeatedly hear any new or unfamiliar sounds while your unit is operating, there may be a problem. For example, poorly performing burners can produce unfamiliar noises.

FLAME APPEARS BLUE IF BURNING NAT. GAS; BLUE/ YELLOW FOR PROPANE.

BURNER

FLAME

HEAT

EXCHANGER

TUBE

VEST

PANEL

SIf you smell any unusual odors, your unit may be oper6 ating improperly. For example, units can give off unfa6 miliar odors if components are required to operate in abnormal conditions.

S Look for visible signs of a malfunctioning unit. Exam6

ples include unusual amounts of condensate on win6

dows inside your house, visibly burnt components or

unusual dirt or rust accumulations on the vent pipe or

FIGURE 6

in the unit.

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