4
Understand the signal words DAN-
GER, WARNING, and CAUTION.
These words are used with the safety-
alert symbol. DANGER identifies the
most serious hazards which
will
result in severe personal injury or
death. WARNING signifies hazards
which
could
result in personal injury
or death. CAUTION is used to identify
unsafe practices which
would
result
in minor personal injury or product
and property damage.
STARTING YOUR
FURNACE
Instead of a continuously burning pilot
flame, your furnace uses an automatic
hot surface ignition system to light
the burners each time the thermostat
turns your furnace on.
Follow these
important safeguards:
• Never attempt to manually light the
burners with a match or other source
of flame.
6
• Read and follow the operating
instructions on the furnace, especially
the item that reads as follows:
Wait 5 minutes to clear out any gas.
Then smell for gas, including near
the floor. If you smell gas,
STOP!
Follow “B’’ in the above safety infor-
mation on this label. If you don’t
smell gas, go to the next step.
• If a suspected malfunction occurs
with your gas control system, such as
the burners do not light when they
should, refer to the shutdown proce-
WARNING
Should overheating occur or
the gas valves fail to shut off
the gas supply, turn off the
manual gas valve to the fur-
nace BEFORE turning off the
electrical supply. (See Fig. 8.)
A failure to follow this warning
could result in a fire or explo-
sion, and personal injury or
death.
!
dures on the furnace or see “Shutting
Down your Furnace” section in this
manual, then call your dealer as soon
as possible.
• Check Air Filter: Before attempt-
ing to start your furnace, be sure
the furnace filter is clean and in place.
(See the maintenance section of
this manual.) Then proceed as
follows:
7
STEPS FOR
STARTING YOUR
FURNACE
1. Set your room thermostat to
the lowest temperature setting.
(See Fig. 7.)
2. Close the external manual gas
valve. (See Fig. 8.)
3. Turn off electrical supply to the
furnace. (See Fig. 9.)
8
9
SYSTEM
COOL
OFF
HEAT
FAN
AUTO
ON
50
70
90
50
70
90
10
11
4. Remove the furnace access
door(s).
a. Downflow/Horizontal—Re-
move blower door after re-
moving 2 screws first, then
remove the control door.
(See Fig. 10.)
b. Upflow—Remove control
door. (See Fig. 11.)
5. Turn the control knob on the
gas valve to the OFF position
and wait 5 minutes.
(See Fig. 12.)
6. After waiting 5 minutes, turn
the control knob on the gas
valve to the ON position.
(See Fig. 13.)
7. Replace the access door(s). See
Fig. 14 for upflow and Fig. 15
for downflow. Replace control
door first on downflow furnaces.
Replace blower door and secure
with 2 screws.
8. Turn on electrical supply to the
furnace. (See Fig. 16.)
9. Open the external manual gas
valve. (See Fig. 17.)
10. Set the room thermostat to a tem-
perature slightly above the room
temperature. This will automati-
cally signal the furnace to start.
The inducer motor will start, and
the hot surface ignitor will ener-
gize. When hot, the ignitor will
have an orange glow.
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