6
S CHECK AIR FILTER: Before attempting to start your
furnace, be sure the furnace filter is clean and in place.
See “Performing Routine Maintenance” section in this
manual. Do not run the furnace without a filter in place.
Then proceed as follows:
STEPS FOR STARTING YOUR FURNACE
1. Set your room thermostat to the lowest temperature setting.
See Fig. 6.
A09564
Fig. 6 -- Lowest Temperature Setting
2. Close the external manual gas valve. See Fig. 7.
C
L
O
S
E
A06188
Fig. 7 -- Close Valve
3. Turn OFF electrical supply to the furnace. See Fig. 8.
A92185
Fig. 8 -- Turn Off Electrical Supply
4. Remove the main furnace door. See Fig. 9.
A05099
Fig. 9 -- Remove Furnace Door
5. Turn the control switch on the gas control to the OFF position
andwait5 minutes. SeeFig.10. Thensmellforgas,including
near the floor. If you smell gas, STOP! Follow “B” on furnace
label. If you don’t smell gas, go to next step.
GAS CONTROL SWITCH
SHOWN IN “OFF” POSITION
TWO-STAGE GAS CONTROL
SINGLE-STAGE GAS CONTROL
A09600
Fig. 10 -- Control Switch to OFF
6. After waiting 5 minutes, turn control switch on the gas control
to the ON position. Turn the control switch to ON. See Fig.
11.
GAS CONTROL SWITCH
SHOWN IN “ON” POSITION
TWO-STAGE GAS CONTROL
SINGLE-STAGE GAS CONTROL
A09599
Fig. 11 -- Control Switch to ON
7. Replace main furnace door. See Fig. 12.
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