Page 6
Service
A qualified service technician should inspect the com
plete system each season (heating and cooling). The fol
lowing maintenance procedures should only be con
ducted by a qualified service technician. Do not attempt
to service the unit in any way.
WARNING
ELECTRICAL SHOCK, FIRE,
OR EXPLOSION HAZARD.
Failure to follow safety warnings exactly could re
sult in dangerous operation, serious injury, death
or property damage.
Improper servicing could result in dangerous op
eration, 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 securely
connected to the furnace flue collar at all times.
For your safety and to fulfill the terms of the limited
warranty, a qualified service technician must annu
ally 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.
During a seasonal check the service technician will in
spect the indoor blower, burner flames and electrical con
nections along with the venting system.
Burner Flame
CAUTION
To ensure proper operation, a qualified technician
should annually check the burner flame.
Blowers
Check the blower wheels for debris and clean if neces
sary. The blower motors are prelubricated for extended
bearing life. No further lubrication is needed.
Blower shaft bearings are prelubricated. For extended
bearing life, relubricate at least once every two years with
a lithium base grease, such as Alvania 3 (Shell Oil), Chev
ron BRB2 (Standard Oil) or Regal AFB2 (Texas Oil). Use
a hand grease gun for relubrication. Add only enough
grease to purge through the bearings so that a bead of
grease appears at the seal lip contacts.
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 in
jury or death.
Filters
All G24−200 filters are installed external to the unit. Filters
should be inspected monthly and cleaned or replaced
when necessary to assure proper furnace operation. If
optional filter box is used, see figures 3 or 4 for replace
ment directions. The filter box contains four 16x25 inch
(406mmx635mm) filters.
NOTE − Replacement filters must be U.L.C. certified or
equivalent for use in Canada.
Flame Rollout Safety Switches
Your Lennox furnace is equipped with two sets of flame
rollout safety switches (one in each heat section). Each
switch shuts off the gas supply to the heat section it con
trols when blockage occurs to its heat exchanger. If the
furnace fails to operate due to the functioning of one or
both of these safety switches, DO NOT attempt to place
the furnace into operation. Contact a qualified service
technician.
To Next Page
Loading...
Need help?
General
