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1. Set thermostat to lowest setting.
(See Fig. 8.)
f
2. Turn off all electrical power to furnace.
(See Fig. 9.)
3. Close oil supply valve. (See Fig. 10.)
10
4. If applicable,
turn off water supply to humidifier.
5. If furnace blower
will be necessary
for cooling
sys-
tem, remember
to turn electric
power back on when
needed
for air conditioning.
6. If furnace
is being shut down because
of a malfunc-
tion, call your dealer as soon as possible.
ALWAYS
KEEP
MAIN
OIL VALVE
TURNED
OFF
IF BURNER
IS SHUT DOWN
FOR AN EXTENDED
PERIOD
OF TIME.
PERFORMING
ROUTINE
MAINTENANCE
With proper maintenance
and care, your furnace
will
operate
economically
and dependably.
Instructions
for
basic maintenance
follow. However,
before begilming
maintenance,
follow these safety precautions:
11
Although
special
care has been taken to mini-
mize sharp edges,
be extremely
careful when
handling
parts or reaching
into the furnace.
FILTERING
OUT TROUBLE
Dirty air filters will cause a loss of airflow in your duct
system.
When excessive
loss of airflow occurs,
the fur-
nace may cycle on its safety controls.
If this condition
is left unattended,
the furnace will eventually
lock out.
It is recommended
that furnace
air filters be checked
every 3 or 4 weeks and cleaned
or replaced
as necessary.
Never operate
your furnace
without
the air fil-
ters in place.
Doing so may damage
the fur-
nace blower
motor. An accumulation
of dust
and lint on internal
parts of your furnace
can
cause a loss of efficiency.
The air filter is installed
in an external
filter rack which
is provided
as standard
equipment
with furnace.
To
inspect,
clean,
and/or
replace
air filter, follow
these
steps:
1. Turn off electrical
supply to furnace.
(See Fig. 11.)
2. Remove
filter from external
filter rack.
3. Inspect filter. If torn, replace
it.
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 FILTERTABLE
Turn off all electrical
power to furnace
before
performing
any
maintenance
or service
on
unit. Failure to take this precaution
may result
in personal
injury due to electrical
shock.
FLANGE
OPENING
FILTER
SIZE
SIZE
FILTER
(IN.)
(IN.)
TYPE
15 X 24
16 X 24 25 X 1
Disposable
17 X 30
18 X 30 X 1
Disposable
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