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13. If the furnace will not operate, follow
the instructions "To Turn OFF Gas To
Furnace" and call your service tech-
nician or gas supplier.
SHUTDOWN
INSTRUCTIONS -
TO TURN OFF GAS
TO FURNACE
CAUTION: Should overheating
occur, or the gas supply fail to
shut off, shut off the main manual
gas valve to the furnace before
shutting off the electrical supply.
1. Set thermostat to the lowest setting.
2. Turn off all electrical power to the
furnace if service is to be performed.
3. Remove the control access panel.
4. Turn the knob on the gas control
clockwise to OFF.
5. Replace the control acess panel.
YOUR FURNACE’S
FILTER -
WHAT IT DOES
The filter in your furnace takes the
lint and dust out of the air that passes
through it. This keeps dirt particles
from getting into the moving parts of
the furnace, where they could cause
serious damage. It also keeps the
dirt from circulating through your
home.
As the filter continues to collect these
particles, it becomes clogged and no
longer allows enough air to circulate
through the furnace. If this happens, the
heat exchangers and blower motor
could overheat; a potentially dangerous
situation. It is very important to keep the
air filter clean! Never operate your fur-
nace without a suitable air filter.
WARNING:
When replacing fil-
ters DO NOT use a type with
excessively high pressure drop.
Some high efficiency filters avail-
able will cause the furnace to
operate improperly and could re-
sult in a safety hazard.
FREQUENCY OF
CHECKING FILTERS
Clean your furnace’s filter at least every
three months. If you need to replace a
filter, check the filter chart to be sure you
install the right size and type of filter for
your furnace.
If your home is new, you should check
the filter every week for the first four
weeks after you begin to use the fur-
nace, and then at least every three
weeks after that, especially if the system
runs constantly.
NOTE: Some installations may
have more than one filter.
LOCATING/REMOVING
FILTERS
UPFLOW FURNACES
Most upflow furnaces have their filters
located on the side or bottom of the
furnace in a filter frame.
If your furnace has this type return filter
frame, remove the door by pulling on it.
Slide the filter out of its channel. To replace
after cleaning, slide filter into place and
snap the door on the end of the filter rack.
Some installations may have filters lo-
cated in the blower compartment. Check
with the installer for your filter location.
To check filters located in the blower
compartment, remove the upper furance
door by lifting up. Pull out bottom of door
and lower from furnace. Remove the
blower compartment panel by lifting up.
NOTE: The spring-loaded safety
cutoff switch, mounted under the
blower deck will automatically cut
off the electrical power supply to
the furnace when the blower panel
is removed.
To remove bottom mounted filter(s) on
all furnaces, push the looped end of the
filter retainer to the side and then lift up.
Reverse the procedure to reinstall filters.
DOWNFLOW FURNACES
The filters in your downflow furnace are
located in the plenum or ductwork above
the furnace.To check the filters, turn off
the electrical supply to the furnace.
TYPICAL GAS PIPING
UPFLOW FURNACE WITH
EXTERIOR FILTER RACK
HONEYWELL
VR8205 GAS VALVE
UPFLOW FURNACE
BOTTOM MOUNT
FILTER RETAINER
Wiring
Terminals
Outlet
Main
Regulator
Adjust
Wrench
Boss
ON - OFF Switch
Inlet
Outlet
Pressure
Tap
WHITE-RODGERS
36E24 GAS VALVE
DOWNFLOW FURNACE
TYPICAL FILTER LOCATION
VENT PIPE
FURNACE
RETURN
AIR
DUCT
ACCESS
PANEL
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