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SYSTEM OPERATION
INFORMATION
Advise The Customer To:
1. Keep the air filters clean. The heating
system will operate better, more
efficiently and more economically.
2. Arrange the furniture and drapes so
that the supply air registers and the
return air grilles are unobstructed.
3. Close doors and windows. This will
reduce the heating load on the
system.
4. Avoid excessive use of kitchen &
bathroom exhaust fans.
5. Do not permit the heat generated by
television, lamps or radios to
influence the thermostat operation.
6 Except for the mounting platform,
keep all combustible articles three
feet from the furnace and vent
system.
7. IMPORTANT: Replace all blower
doors and compartment covers after
servicing the furnace. Do not operate
the unit without all panels and doors
securely in place.
8. Proper operation of the system with
constant air circulation.
WARNING
!
COMBUSTIBLE MATERIAL MUST
NOT BE PLACED ON OR AGAINST
THE FURNACE JACKET OR WITHIN
THE SPECIFIED CLEARANCES OF
THE VENT PIPE. THE AREA AROUND
THE FURNACE MUST BE KEPT
CLEAR AND FREE OF ALL
COMBUSTIBLE MATERIALS
INCLUDING GASOLINE AND OTHER
FLAMMABLE VAPORS AND LIQUIDS.
PLACEMENT OF COMBUSTIBLE
MATERIALS ON, AGAINST OR
AROUND THE FURNACE JACKET
CAN CAUSE AN EXPLOSION OR
FIRE RESULTING IN PROPERTY
DAMAGE, PERSONAL INJURY OR
DEATH. THE FURNACE OWNER
SHOULD BE CAUTIONED THAT THE
FURNACE AREA MUST NOT BE
USED AS A BROOM CLOSET OR FOR
ANY OTHER STORAGE PURPOSES.
ANNUAL INSPECTION
The furnace should operate for many
years without excessive scale build-up
in the flue passageways, however, it is
recommended that a qualified installer,
service agency, or the gas supplier
actually inspect the flue passageways,
the vent system and the main burners
for continued safe operation paying
particular attention to deterioration from
corrosion or other sources.
WARNING
!
HOLES IN THE VENT PIPE OR HEAT
EXCHANGER CAN CAUSE TOXIC
FUMES TO ENTER THE HOME
RESULTING IN CARBON
MONOXIDE POISONING OR DEATH.
THE VENT PIPE OR HEAT
EXCHANGER MUST BE REPLACED
IF THEY LEAK.
• IMPORTANT: It is recommended
that at the beginning of the heating
season and approximately midway
in the heating season a visual
inspection be made of the main
burner flames for the desired flame
appearance by a qualified installer,
service agency, or the gas supplier.
• IMPORTANT: It is also
recommended that at the beginning
of the heating season, the flame
sensor be cleaned with steel wool
by a qualified installer, service
agency, or the gas supplier.
• IMPORTANT: It is recommended
that an annual inspection and
cleaning of all furnace markings be
made to assure legibility. Attach a
replacement marking, which can be
obtained through the distributor, if
any are found to be illegible or
missing.
IMPORTANT: FOR Nox MODELS –
At the beginning of the heating season
a visual inspection of the Nox device
should be made to ensure they have
not become obstructed by insects
nests or anything else which may
effect performance.
FIGURE 28
DOWNFLOW BLOWER REMOVAL
LUBRICATION
The indoor blower motor and induced
draft motor are prelubricated by the
motor manufacturer and do not require
further attention.
The motors must be cleaned
periodically by a qualified installer,
service agency, or the gas supplier to
prevent the possibility of overheating
due to an accumulation of dust and dirt
on the windings or on the motor
exterior. Air filters should be kept
clean. Dirty filters can restrict airflow
and results in motor overheating.
Reference Figure 28 for proper
removal of the blower assembly on
downflow models.
REPLACEMENT PARTS
Contact your local distributor for a
complete parts list.
NOx MODELS
When converting furnaces equipped
with NOx inserts to LP gas, remove the
NOx insert assemblies.
TROUBLESHOOTING
Refer to Figure 29 for determining
cause of unit problems.
WIRING DIAGRAM
Figures 30 and 31 are complete wiring
diagrams for the furnace and power
sources.
35
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Troubleshooting
