To Start The Furnace - Trane XV90i User's Information Manual

User's Information
Lighting instructions.
Your furnace does not use a continuously burning pilot
fl ame. Therefore, manually lighting your furnace is not re-
quired. Your furnace is equipped with an automatic ignition
system. It uses a hot surface ignition device that automati-
cally lights the burners each time the thermostat signals the
furnace to start.
▲
WARNING
!
SAFETY HAZARD
DO NOT ATTEMPT TO MANUALLY LIGHT THE FURNACE.
FAILURE TO FOLLOW THIS WARNING MAY RESULT IN
PERSONAL INJURY, PROPERTY DAMAGE, OR DEATH.
▲
CAUTION
!
If the furnace is shut down during the cold weather
months, provisions must be taken to prevent freeze-up of
all water pipes and water receptacles.
1. Please read all safety information in this book before
operating furnace.
2. Set thermostat to lowest setting. Turn off all electric
power to furnace.
3. Remove the furnace front panel to gain access to the
main gas valve.
4. Turn gas cock knob clockwise or the toggle switch
located on the main gas valve inside the unit to "OFF"
position (see illustration on this page). If external gas
cock is used, turn to "OFF" position (see illustration on
next page). Allow 5 minutes for any gas within the unit
to escape. LP gas being heavier than air may require
forced ventilation.
Gas Valve On / Off
Toggle Switch
Your furnace may have a "Knob Switch" or a "Toggle Switch" to turn the gas ON or OFF.
If you smell gas STOP! Follow the "What To Do If
You Smell Gas" instructions on the front cover of
this book. If you don't smell gas, go to next step.
5. Turn gas cock knob counterclockwise or the toggle
switch to "ON" marker (see illustration on this page).
Turn the external gas cock back to the on position if
you expect the furnace to light.
6. Replace the furnace front access panel.
7. Turn on main electrical supply and set thermostat to de-
sired setting. Combustion blower will start and ignition
device will start to heat up. After approximately 15 sec-
onds main gas valve will open and burners will ignite.
4

To Start the Furnace

8. When thermostat is satisfi ed, main burners will
extinguish.
9. Restore electrical supply panel. If main burners fail
to ignite, lower Comfort Control setting or disconnect
electrical supply, wait 5 minutes, raise Comfort Control
setting above indicated temperature.
10. If furnace will not light, turn "OFF" all gas and elec-
tricity to unit and call servicer or gas supplier.
For complete shutdown.
Turn gas cock knob on main gas valve to "OFF" position.
Disconnect electrical supply to unit.
Whenever your house is to be vacant, arrange to have
someone inspect your house for proper temperature. If your
furnace should fail to operate, damage could result, such as
frozen water pipes.
Flame Roll-out Device.
All models are equipped with a manual resetting rollout
switch located near the burners. In case of fl ame roll-out,
the switch trips automatically shutting off all fl ow of gas.
The switch must be manually reset by pressing the red
reset button on the top of the switch.
Gas Valve On / Off
Toggle Switch
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