Bryant 373LAV, 376CAV, 383KAV, 395CAV User Manual
USER’S INFORMATION MANUAL
USER’S INFORMATION MANUAL
MODELS 373LAV, 376CAV
DOWNFLOW/HORIZONTAL and
383KAV, 395CAV UPFLOW GAS FURNACE
NOTE T O INSTALLER:
This manual must be left with the
equipment user.
Upflow
!
WARNING: If the information in this manual is not followed exactly, a fire or explosion may
result causing property damage, personal injury
or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS:
— Do not try to light any appliance.
— Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fire department.
— Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
Downflow/
Horizontal
Do not use this furnace if any part has been under
water . Immediately call a qualified ser vice technician
to inspect the furnace and to replace any part of the
control system and gas control which has been under
water.
WELCOME TO
TODAY’S
GENERATION OF
COMFORT
Congratulations! Your new, higher
efficiency gas furnace is a sound
investment which will reward you
and your family with years of warm
memories winter after winter.
Not only is your new furnace energy
efficient, it is also extremely reliable.
Spend just a few minutes with this
booklet to learn about the operation
of your new furnace—and the small
amount of maintenance it takes to
keep it operating at peak efficiency.
Years went into the development of
your new furnace. Take a little time
now to assure its most efficient operation for years to come.
UPFLOW FURNACE
COMPONENTS
1
Relief Box
2
Rating Plate
3
Gas Valve Control Knob or Electric Switch
(On/Off)
4
Gas Valve
5
Gas Burner
6
Flame Sensor
7
Filter Retainer
8
Air Filter
9
Blower and Blower Motor
10
Blocked Vent Safeguard Tube and Switch
11
Gas Manifold
12
Manual Reset Limit Switch
13
Hot Surface Ignitor
14
Blower Door Safety Switch
MODEL 383KA V and 395CAV
Upflow Furnace
1
2
3
4
5
6
7
8
9
1
MODEL 373LA V and 376CAV
Downflow/Horizont
Furnace
2
al
10
11
12
13
14
3
2
12345678910111213
DOWNFLOW/HORIZONTAL
FURNACE COMPONENTS
1
Manual-Reset Auxiliary Limit Switch
(When Used)
2
3
4
5
6
7
IMPORTANT FACTS
Your furnace must have adequate airflow for efficient combustion and safe
ventilation. Do not enclose it in an
airtight room or “seal’’ it behind solid
doors. To minimize the possibility of
serious personal injury, fire, damage
to your furnace, or improper operation;
carefully follow these safety rules:
• Keep the area around your furnace
free of combustible materials, gasoline,
and other flammable liquids and
vapors.
• Do not cover the furnace, store trash
or debris near it, or in any way block
the flow of fresh air to the unit.
• Combustion air must be clean and
uncontaminated with chlorine or fluorine. These compounds are present in
8
9
10
11
12
13
4
many products around the home, such
as: water softener salts, laundry
bleaches, detergents, adhesiv es, paints,
varnishes, paint strippers, waxes, and
plastics.
Make sure the combustion air for your
furnace does not contain any of these
compounds. During remodeling be
sure the combustion air is fresh and uncontaminated. If these compounds are
burned in your furnace, the heat exchangers and metal vent system may
deteriorate.
• A furnace installed in the attic or
other insulated space must be kept free
and clear of the insulating material.
Examine the furnace area when installing the furnace or adding more insulation. Some materials may be
combustible.
NOTE: Do not use this furnace if any
part has been under water . Immediately
call a qualified service technician to inspect the furnace and to replace any
part of the control system and any gas
control which has been under water.
5
NOTE: The qualified installer or
agency must use only factoryauthorized re-placement parts, kits,
and accessories when modifying or
repairing this product.
This furnace contains safety devices
which must be manually reset. If the fur-
Blower and Blower Motor
Relief Box
Gas Valve Control Knob or Electric Switch
(On/Off)
Gas Valve
Gas Burner
Rating Plate
Blower Door Safety Switch
Blocked Vent Safeguard Tube and Switch
Gas Manifold
Manual Reset Limit Switch (2)
Hot Surface Ignitor
Flame Sensor
nace is left unattended for an extended
period of time, have it checked periodically for proper operation. This precaution will prevent problems associated
with no heat, such as frozen water pipes,
etc. See “Before Y ou Request a Service
Call’’ section in this manual.
SAFETY
CONSIDERATIONS
Installing and servicing heating
equipment can be hazardous due to
gas and electrical components. Only
trained and qualified personnel should
install, repair, or service heating
equipment.
Untrained personnel can perform basic
maintenance functions such as cleaning and replacing air filters. All other
operations must be performed by
trained service personnel. Observe
safety precautions in this manual, on
tags, and on labels attached to the furnace and other safety precautions that
may apply.
Recognize safety information: This is
the safety-alert symbol
see this symbol on the furnace and in
instructions or manuals, be alert to the
potential for personal injury.
Understand the signal words—DANGER, WARNING, and CAUTION.
These words are used with the
!
. When you
3
safety-alert symbol. DANGER identifies the most serious hazards which
result in severe personal injury or
death. WARNING signifies hazards
which
could result in personal injury or
death. CAUTION is used to identify
unsafe practices which
minor personal injury or product and
property damage.
would result in
will
ST AR TING Y OUR
FURNACE
Instead of a continuously burning pilot
flame, your furnace uses an automatic
hot surface ignition system to light the
burners each time the thermostat signals the furnace to start.
important safeguards:
• Never attempt to manually light the
burners with a match or other source of
flame.
• Read and follow the operating in-
structions 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 g as,
“B’’ in the safety information above 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 procedures on the furnace, or in the next section, to turn off your system, then call
your dealer as soon as possible.
Follow these
STOP! Follow
•
CHECK AIR FILTER: Before at-
tempting 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:
STEPS FOR STARTING
YOUR FURNACE
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 the electrical supply to
your furnace. (See Fig. 9.)
C
L
O
S
E
6
®
11
4.Remove the furnace access door(s).
a. Downflo w/Horizontal—remove
blower door after removing
7
5. The gas valve will have EITHER a
6.After waiting 5 minutes, turn the
7.Replace the access door(s). See
8.Turn ON the electrical supply to
8
9.Open the external manual gas
10.Set the room thermostat to a tem-
2 screws first, then remo ve the
control door. (See Fig. 10.)
b. Upflow—remove control door.
(See Fig. 11.)
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.)
control knob or switch on the gas
valve to the ON position. (See Fig.
14 or 15.)
Fig. 16 for upflow and Fig. 17 for
downflow. Replace control door
first on downflow furnaces. Then
replace blower door (secure with
2 screws).
the furnace. (See Fig. 18.)
valve. (See Fig. 19.)
perature slightly above the room
temperature. This will automatically signal the furnace to start. The
inducer motor will start, and the hot
surface ignitor will energize. When
hot, the ignitor will have an orange
glow.
9
!
WARNING
Should overheating occur, or
the gas valve fail to shut off the
gas supply, turn off the manual
gas valve (See Fig. 8) to the furnace BEFORE turning off the
electrical supply. A failure to
follow this warning could result in a fire or explosion, and
personal injury or death.
F
O
F
10
4
12
Loading...