Bryant CONDENSING GAS FURNACE 340MAV, CONDENSING GAS FURNACE 350MAV, CONDENSING GAS FURNACE 352MAV, CONDENSING GAS FURNACE 355MAV User's Information Manual
USER’S INFORMATION MANUAL
MODEL 340MAV, 350MAV, 352MAV,
355MAV CONDENSING GAS
FURNACE
NOTE TO INSTALLER:
This manual must be left with the equipment user.
MODEL 350MAV (shown)
HIGH EFFICIENCY
GAS FURNACE
A97381
As an ENERGY STAR
Bryant Heating & Cooling
Systems has determined that
this product meets the ENERGY
STAR guidelines for energy
efficiency.
!
WARNING: If the information in this manual
SM
Partner,
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.
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 gas control which has been
under water.
†
WELCOME TO A NEW
GENERATION OF
COMFORT
Congratulations! In light of rising
energy costs, the Plus 90
Plus90
Gas-Fired, Condensing Furnaces are
among the soundest investments
today’s homeowner can make.
Your new furnace is truly a triumph
of technology in home heating. A
revolutionary design employs 2 heat
exchangers to “squeeze” out the maximum amount of heat from the fuel consumed. In fact, your new furnace is so
efficient, over 90 percent* of the heat
generated during combustion is captured and delivered inside your home.
That is more than a 33 percent* increase in heating efficiency over conventional furnaces.
These are among the most energy-efficient furnaces you can buy today. They
also are among the safest and most
dependable. We are proud of the technological advances incorporated into
the design of these furnaces. With only
minimal care, your new furnace will
deliver many years of money-saving
home comfort and enjoyment. Spend
just a few minutes with this manual to
learn the operation of your new furnace and the small amount of maintenance it takes to help keep it operating
at peak efficiency year after year.
* The output capacity and any representations of efficiency
™ and Plus 90i
for this furnace are based on standard Department of
Energy test procedures.
TM
, 340MAV,
TM
Multipoise,
MODELS 340MAV
(SHOWN) AND 350MAV
FIXED-CAPACITY
FURNACES
1
MODEL 355MAV
VARIABLE-CAPACITY
AND MODEL 352MAV
TWO-STAGE
FURNACES
2
INSTALLATION DATA
Date Installed
Dealer Name
Address
City
State Zip
Telephone
FURNACE
Product No.
Model No.
Serial No.
SPLIT-SYSTEM
OUTDOOR UNIT:
Product No.
Model No.
Serial No.
INDOOR COIL:
Product No.
Model No.
Serial No.
2
8
10
5
16
9
6
11
5
4
18
2
17
3
12
7
1
14
15
13
19
8
10
5
15
14
13
16
9
11
5
2
17
3
4
12
18
6
20
1
7
19
FURNACE COMPONENTS
1
Combustion-air intake connection to ensure
contaminant-free air (right or left side).
2
Burner sight glass for viewing burner flame.
3
Burner assembly (inside). Operates with energysaving inshot burners and hot surface ignitor for safe,
dependable heating.
4
Redundant gas valve. Safe, efficient. Features 1 gas
control with 2 internal shutoff valves.
5
Vent outlet. Uses PVC pipe to carry vent gases from
the furnace’s combustion system (right or left side).
6
Inducer motor. Pulls hot flue gases through the heat
exchangers, maintaining negative pressure for added
safety.
7
Blower access panel safety interlock switch.
8
Air filter and retainer.
9
Condensate drain connection. Collects moisture
condensed from burned gases for disposal into home
drain system.
10
Heavy-duty blower. Circulates air across the heat
exchangers to transfer heat into the home.
11
Secondary condensing heat exchanger (inside).
Wrings out more heat through condensation.
Constructed with Polypropylene-laminated steel to
ensure durability.
12
Primary serpentine heat exchanger (inside).
Stretches fuel dollars with the S-shaped heat-flow
design. Solid construction of corrosion-resistant
aluminized steel means reliability.
13
Control center.
14
3-amp fuse provides electrical and component
protection.
15
Light emitting diode (LED) on control center. Code
lights are for diagnosing furnace operation and
service requirements.
16
Pressure switch(es) ensure adequate flow of flue
products through furnace and out vent system.
17
Rollout switch (manual reset) to prevent
overtemperature.
18
Junction box for 115-v electrical power supply.
19
Transformer (24v) behind control center provides
low-voltage power to furnace control center and
thermostat.
20
Limit switch (manual reset) on 355MAV only.
MODELS 340MAV, 350MAV,
AND 352MAV FURNACES
(UPFLOW POSITION)
MODEL 355MAV
FURNACE (UPFLOW POSITION)
3
3
4
!
!
IMPORTANT FACTS
Your gas furnace uses air from
outside the home for combustion
and venting. It is not to be installed
using in-house air. Therefore, both
pipes must terminate outside the
structure and must not be obstructed
in any way.
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.
• A furnace installed in an attic or
other insulated space must be kept
free and clear of insulating material.
Examine the furnace area when installing the furnace or adding more insulation. Some insulation 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.
NOTE:
agency must use only factoryauthorized replacement parts, kits,
and accessories when modifying this
product.
The qualified installer or
This furnace contains SAFETY
DEVICES which must be MANUALLY RESET. If the furnace 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 You Request a Service
Call” section in this manual.
SAFETY
CONSIDERATIONS
Installing and servicing of heating
equipment can be hazardous due to
gas and electrical components.
Only trained and qualified personnel
should install, repair, or service heating equipment.
5
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 . When you
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 safety-alert symbol. DANGER identifies the most serious
hazards which
sonal injury or death. WARNING signifies hazards which
personal injury or death. CAUTION is
used to identify unsafe practices which
would result in minor personal injury or
product and property damage.
NOTE is used to highlight suggestions
which
tion, reliability, or operation.
will result in severe per-
could result in
will result in enhanced installa-
STARTING YOUR
FURNACE
Instead of a continuously burning pilot
flame which wastes valuable energy,
your furnace uses an automatic, hot
surface ignition system to light the
burners each time the thermostat
starts your furnace.
important safeguards:
Follow these
6
• Never attempt to light the burners
manually 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 safety information
above on this furnace 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 not lighting when they
should, refer to the shutdown procedures on the furnace, or in the “Shutting Down Your Furnace” section and
call your dealer as soon as possible.
WARNING
If overheating occurs or the
gas valve fails to shut off the
gas supply, turn off the external manual gas valve to the
furnace BEFORE turning off
the electrical supply. (See Fig.
9.) Failure to follow this warning could result in a fire or explosion, and personal injury
or death.
CHECK AIR FILTER: Before
attempting to start your furnace, be
sure the furnace air filter is clean and in
place. See “Performing Routine Maintenance” section in this manual.
Then proceed as follows:
STEPS FOR STARTING
YOUR FURNACE
1. Set your room thermostat to the
lowest temperature setting.
(See Fig. 8.)
7
STOP!
4
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