Bryant 331AAV 用户手册

 

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 

 

result in severe personal injury or 
death. WARNING signifies hazards 
which 

 

 result in personal injury 

or death. CAUTION is used to identify 
unsafe practices which 

 

 result 

in minor personal injury or product 
and property damage.

 

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. 

 

•  Never attempt to manually light the 
burners with a match or other source 
of flame.

 

•  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, 

 

 

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-

dures on the furnace or see “Shutting 
Down your Furnace” section in this 
manual, then call your dealer as soon 
as possible.

•

 

 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:

 

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.)

 

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. The gas valve will have EITHER 

a control knob or control switch to 
turn off and on. Turn the control 
knob or switch on the gas valve 
to the OFF position and wait 
5 minutes. (See Fig. 12  or 13.)

6. After waiting 5 minutes, turn 

the control knob or switch on the 
gas valve to the ON position. 
(See Fig. 14 or 15.)

7. Replace the access door(s). See 

Fig. 16 for upflow and Fig. 17 
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. 18.)

9. Open the external manual gas 

valve. (See Fig. 19.)

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.

!

®