Carrier 58GP - Automatic Intermittent Ignition Pilot; Furnace Shutdown Procedures; Manual Ignition Pilot Shutdown

furnace to start. If your furnace is equipped with an
optional vent damper, see Fig. 6 and VENT DAMPER
paragraph above Fig. 6 for information about the vent
damper.
13. Furnace main burners should light shortly after you
set the thermostat. After you verify that the burners
are lit, you may adjust the room thermostat to your
own personal comfort setting. If the burners fail to
light, shut down your furnace and call your dealer for
service. Refer to the lighting instruction label affixed
to your furnace blower access door or page 6 for shut¬
down procedures.
NOTE: To conserve energy when the heating season has
ended, you should shut down your manually ignited pilot.
Follow the procedures in the “Shutting Down Your Fur¬
nace” section of this manual.
AUTOMATIC INTERMITTENT IGNITION PILOT
NOTE: Your gas valve may be different from that pictured.
Refer to the operating instructions label affixed to your fur¬
nace blower access door (See Figs. 1 and 2 for door identifi¬
cation.) for the correct picture.
A WARNING
Never attempt to manually light the pilot on a furnace
that has an intermittent ignition system by using a
match or any other source of flame. A failure to adhere
to this warning can result in an explosion, fire, electrical
shock, personal injury, or death.
1. Adjust your room thermostat to the lowest tempera¬
ture setting. See Fig. 7.
2. Close the external manual gas valve. See Fig. 8.
3. Turn OFF the electrical supply to your furnace. See
Fig. 9.
4. Remove the access door(s) of your furnace. Lift up and
out at the bottom. See Fig. 10 or 11.
NOTE: The blower access door must be installed to permit
furnace operation. On downflow furnaces, the blower access
door must be removed before the control access door is
removed, then reinstalled.
5. Turn the control knob of the internal gas valve clock¬
wise or counterclockwise (depending on the type valve
supplied with your furnace) to the indicated OFF posi¬
tion. Wait 5 minutes for any expelled gas to dissipate.
See Fig. 18.
6. After waiting 5 minutes, turn the control knob to the
ON position.
7. Replace the access door. Insert door end into furnace,
push the door in and down. See Fig. 15 or 16. On down¬
flow furnaces, remove the blower access door, install
the control access door, then reinstall the blower access
door.
8. Turn on the electrical supply to the furnace.
9. Open the external manual gas valve. See Fig. 13.
10. Adjust the room thermostat to a setting slightly above
room temperature. This will automatically signal the
furnace to start. If your furnace is equipped with an
optional vent damper, see Fig. 6 and VENT DAMPER
paragraph above Fig. 6 for information about the vent
damper.
11. The pilot ignition system will spark, lighting the pilot
flame. After 40 to 70 seconds—a timed delay to permit
verification that the pilot has been lit, the gas valve
permits gas to flow to the burners where it is lit by the
pilot. Flames warm the furnace’s heat exchanger. After
a built-in time delay of approximately 75 seconds, the
furnace blower is switched on.
12. Adjust your thermostat to the temperature that satis¬
fies your comfort requirements.
IF THE PILOT DOESN’T LIGHT, or the burners fail to
ignite, or if the blower doesn't come on ... , shut down
your furnace and call your dealer for service. Refer to the
operating instruction label affixed to your furnace blower
access door for shutdown procedures.
SHUTTING DOWN YOUR FURNACE
Once the heating season has ended, or if you ever suspect a
malfunction, you'll want to turn your furnace off. The fol¬
lowing procedures and the procedures on the lighting/
operating instructions label on your furnace must be fol¬
lowed. Refer to the lighting/operating instruction label
affixed to the blower access door for the correct gas valve
picture.
MANUAL IGNITION PILOT
1. Set your room thermostat to the lowest temperature
setting. See Fig. 19.
2. Turn OFF the electrical supply to your furnace. See
Fig. 20.
3. Remove the access door(s) from your furnace. Lift up
and out at the bottom. See Fig. 10 for upflow and Fig.
11 for downflow furnaces.
NOTE: The blower access door must be installed to permit
furnace operation. On downflow furnaces, the blower access
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