Safety Considerations; Starting And Shutting Down Your Furnace; Steps For Starting Your Furnace - Bryant 345MAV User's Information Manual

SAFETY
CONSIDERATIONS
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, CAUTION, and NOTE.
These words are used with the safety-
alert symbol. DANGER identifies the
most serious hazards which will result in
severe personal injury or death. WARN-
ING signifies hazards which could result
in 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
will result in enhanced installation,
reliability, or operation.
To minimize the possibility of serious
personal injury, fire, damage to
your furnace, or improper operation,
carefully follow these safety rules:
Your gas furnace uses air adjacent to the
furnace for combustion and vents flue gas
to the outdoors. Do not enclose it in an
airtight room or seal it behind solid doors.
It must have adequate airflow for efficient
combustion and safe ventilation. The
vent pipe must terminate outside the
structure and must not be obstructed in
any way. Do not block or obstruct air
openings on furnace or spaces around
furnace.
• 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
. When you
uncontaminated with chlorine or fluo-
rine. These compounds are present in
many products around the home, such
as: water softener salts, laundry
bleaches, detergents, adhesives, 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 may deteriorate.
• A furnace installed in an attic or
other insulated space must be kept
free and clear of insulating material.
Examine the furnace area when the
furnace is installed or when insulation
is added. Some insulation materials
may be combustible.
This furnace contains SAFETY
DEVICES which must be MANU-
ALLY RESET. If the furnace is left un-
attended 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.
STARTING AND
SHUTTING DOWN YOUR
FURNACE
Should the gas supply fail to shut off or
if overheating occurs, shut off the gas
valve to the furnace before shutting off
the electrical supply. Instead of a con-
tinuously burning pilot flame which
wastes valuable energy, your furnace
3
uses an automatic, hot surface ignition
system to light the burners each time
the thermostat starts your furnace. Fol-
low these important safeguards:
4
• Never attempt to light the burners
manually with a match or other source
of flame.
• Read and follow the operating
instructions on the inside of main fur-
nace door, 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,
STOP! 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 proce-
dures on the inside of main furnace
door, or in the "Shutting Down Your
Furnace" section and call your dealer
as soon as possible.
If overheating occurs or the
gas valve fails to shut off the
gas supply, turn off the man-
ual gas valve to the furnace
BEFORE turning off the elec-
trical supply. (See Fig. 7.) Fail-
ure to follow this warning
could result in a fire or explo-
sion, 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 Main-
tenance" section in this manual.
Then proceed as follows:
STEPS FOR STARTING
YOUR FURNACE
1. Set your room thermostat to the low-
5
4
WARNING
!
est temperature setting. (See Fig. 6.)
®
6