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NOTE:
If filter has been replaced
with an electronic
air cleaner
(EAC),
refer to EAC Owner's
Manual
for
maintenance
information.
4. If filter is dirty, it must be replaced.
If your furnace
air filter needs to be replaced,
be sure to use the same
size and type of filter that was originally
supplied.
Use furnace
filter table for filter size and filter rack
flange dimensions
for return
air duct.
FURNACE
AIR FILTER TABLE
FLANGE
OPENING SIZE
(IN.)
15X 23
19 X 29
FILTER SIZE
(IN.)
Model Size 105
16X24X1
or
16X25X1
Model Size 120
18X30X
1
or
20X30X
1
FILTER
TYPE
Disposable
Disposable
If you have replaced
a disposable
filter with a perma-
nent washable
filter, it may be cleaned
if it is dirty.
Wash filter in a sink, bathtub,
or outside
with a garden
hose. Always
use cold tap water. A mild liquid deter-
gent may be used if necessary.
Spray water through
filter in the opposite
direction
of airflow.
Allow
filter
to dry.
5. Re-install
clean air filter.
6. Turn on electrical
supply
to furnace.
A CHECK-UP
CHECKLIST
Your furnace represents an important investment in
your family's comfort and your home's value. To keep
it performing
properly and as a preventative
to future
problems, have a trained service specialist give your
furnace a professional
check-up annually. The fol-
lowing checklist can be used as a guideline to proper
service:
• Check flue and seconda U tube passage ways including
chimney -- clean if necessary.
• Change oil filter.
• Change nozzle.
• Check and adjust combustion and draft.
• Inspect all vent piping inside structure for deterioration
and vent terminations outside the structure for blockage.
• Check oil pipes leading to and inside of your furnace
for leaks.
• Inspect and clean the blower motor and wheel.
• Inspect and change or clean air filter if necessary.
• Inspect all supply- and return-air ducts fl)r obstruc-
tions, air leaks, and insulation. Remedy any problem
when necessau.
• Inspect the return-air duct connections at the furnace to
ensure it is physically sound, sealed to the furnace
casing, and terminates outside the space containing the
furnace.
° Inspect electrical wiring, connections, and compo-
nents fbr loose connections.
° Examine the physical support of the furnace. Support
should be sound with no cracks, sagging, gaps, etc.
around the base.
° Check furnace for any obvious signs of deterioration.
BEFORE YOU REQUEST
A SERVICE CALL
If your furnace is not operating or not performing
properly, you may save the expense of a service call
by checking a few things yourself before calling for
service.
FOR INSUFFICIENT
AIRFLOW:
• Check for dirty air filters.
• Check for blocked return-air or supply-air grilles
throughout your home. Ensure they are open and
unobstructed.
If problem still exists, call your dealer for service.
IF FURNACE FALLS TO OPERATE:
Follow this checklist step by step, advancing to the next
step only if furnace fails to start.
• Check thermostat for proper temperature. Is thermo-
stat set above room temperature?
• Is thermostat set on HEAT'?
• Check fuses and circuit breakers. Is electrical supply
on'?
• Is valve in oil supply pipe in open position'?
• Is the ignition control on the burner not in lockout'? The
red button on top of the control must be depressed fl)r 3
sec in order to reset the control.
• Check for obstructions
around the vent termination.
If furnace still fails to operate, call your service represen-
tative. For your convenience, record furnace product and
serial numbers on page 2. Should you ever require
service, you will have ready access to the infl)rmation
needed by your sewice representative.
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