Bryant Plus 90i - Page 6

STEPS FOR STARTING YOUR FURNACE
1. Set your room thermostat to the lowest temperature set¬
ting. (See Fig. 8.)
2. Close the external manual gas valve. (See Fig. 9.)
3. Thrn OFF the electrical supply to the furnace. (See
5. Thrn the control knob on the gas valve to the OFF position
and wait 5 minutes. Then smell for gas (including near the
floor). If you smell gas, STOP! Follow operating instruc¬
tions on furnace control access door. (See Fig. 13.)
6. After waiting 5 minutes, turn the control knob on the gas
valve to the ON position. (See Fig. 13.)
b. Downflow— Remove blower door first, then remove the
7. Replace the access door(s). (See Fig. 14 for upflow and Fig.
15 for downflow.) Replace control door first on downflow
furnaces. Then replace blower door.
8. Thrn ON the electrical supply to the furnace and wait 1
minute. (See Fig. 16.)
9. Open the external manual gas valve. (See Fig. 17.)
10. Set the room thermostat to a temperature slightly above
room temperature. This will automatically signal the fur¬
nace to start.
11. The speed of the induced draft motor is gradually in¬
creased until the flow-proving switches make. Shortly
thereafter the pilot ignition system begins sparking and
the pilot flame lights. After a 40- to 70-sec time delay that
takes place while the system is automatically verifying
that a pilot flame has been established, the gas valve per¬
mits gas to flow to the main burners, and the pilot lights
the burners. After another built-in time-delay of approxi¬
mately 35 sec, your furnace blower starts at low speed for
20 sec before the microprocessor control makes the neces¬
sary adjustments to operate the blower at either the low- or
high-fire speed.
NOTE: If the pilot fails to ignite within 5 minutes (twice), the
furnace control system will lockout. If lockout occurs, the main
burners fail to light, or the blower doesn’t come on, shut down
your furnace and call your dealer for service.
12. Set your thermostat to the temperature that satisfies your
comfort requirements. SUGGESTION: Setting the ther¬
mostat back a few degrees—and compensating for the dif¬
ference with warmer clothing—can make a big difference
in your fuel consumption on extremely cold days. The few
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