Maintenance
A licensed professional service technician (or equivalent)
should inspect the complete system each season (heating
and cooling). The following maintenance procedures
should only be conducted by a licensed professional ser-
vice technician (or equivalent). Do not attempt to service
the unit in any way.
WARNING
ELECTRICAL SHOCK, FIRE,
OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage.
Improper servicing could result in dangerous opera- tion, serious injury, death, or property damage. Before servicing, disconnect all electrical power to furnace.
When servicing controls, label all wires prior to dis- connecting. Take care to reconnect wires correctly. Verify proper operation after servicing.
Venting System
WARNING
Asphyxiation Hazard
The exhaust vent for this furnace must be leak−free and must be securely connected to the furnace flue collar at all times.
For your safety and to fulfill the terms of the limited warranty, a licensed professional service technician (or equivalent) must annually inspect this furnace and its vent system.
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.
Inspect the furnace for obvious signs of deterioration.
Inspect the furnace venting system to make sure it is in
place, physically sound, and without holes, corrosion, or
blockage.
Vent pipe must be clear and free of obstructions and must
slope upward away from the furnace.
Inspect the furnace return air duct connection to ensure
duct is sealed to the furnace and terminates outside the
space containing the furnace.
Inspect the physical support of the furnace to guarantee
that it is sound without sagging, cracks or gaps around
base and it maintains seal between base and support.
Inspect the condensate drain and trap for leaks and cracks. The drain and trap must also be cleaned and the trap must be filled with water.
During a seasonal check the service technician will con- duct a combustion analysis. The technician will also in- spect the indoor blower, burner flames, electrical connec- tions and the venting system.
Blower
Check the blower wheel for debris and clean if necessary. The blower motors are prelubricated for extended bearing life. No further lubrication is needed.
WARNING
The blower access panel must be securely in place when the blower and burners are operating. Gas fumes, which could contain carbon monoxide, can be drawn into living space resulting in personal inju- ry or death.
Burner Flame
CAUTION
To ensure proper operation, a licensed professional service technician (or equivalent) should check the burner flame and conduct a combustion analysis annually.
Electrical
1 − Check all wiring for loose connections.
2 − Check for the correct voltage at the furnace (furnace operating).
3 − Check amp−draw on the blower motor.
Motor Nameplate__________Actual__________
Service Reminder
Call your Lennox service technician if the unit will not oper- ate. Before calling, always check the following to be sure service is required:
1 − Check that electrical disconnect switches are ON.
2 − Check room thermostat for proper setting.
3 − Replace any blown fuses or reset circuit breakers.
4 − Gas valve should be ON.
5 − Air filter should not be plugged, which will limit air flow. 6 − Is gas turned on at meter?
7 − Is manual main shut−off valve open?
Record the model and serial number of the furnace. These numbers are on the unit nameplate, which is located on the blower deck below the combustion air inducer.
Serial Number __________________
Model Number __________________
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