58UVB
DEDICATED UPFLOW CONDENSING
GAS FURNACE
Owner’s Information Manual
NOTE TO INSTALLER:
THIS MANUAL MUST BE LEFT WITH THE EQUIPMENT
USER.
CERTIFIED
USER: Please read all instructions in the manual and retain all
manuals for future reference.
!
As an ENERGY STAR® Partner,
Carrier Corporation has deter-
mined that this product meets
the ENERGY STAR® guidelines
for energy efficiency.
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in
injury, death, or property damage.
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.
--Leave the building immediately.
--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.
!
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury and/or death.
A05097
Carbon Monoxide is invisible, odorless, and toxic!
Carrier Corporation recommends a carbon monoxide
alarm in your home, even if you do not own a gas
appliance. Locate the carbon monoxide alarm in the
living area of your home and away from gas appliances
and doorways to attached garages. Follow the alarm
manufacturer’s instruction included with the alarm.
Do not use this furnace if any part has been under water.
A flood--damaged furnace is extremely dangerous.
Attempts to use the furnace can result in fire or
explosion.
A
qualified service agency should be
contacted to inspect the furnace and to replace all gas
controls, control system parts, electrical parts that have
been wet or the furnace if deemed necessary.
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FURNACE COMPONENTS
17
3
1. Combustion--air intake connection to ensure contaminant--
free air (right or left side).
2
2. Burner sight glass for viewing burner flame.
3. Burner assembly (inside). Operates with energy--saving
inshot burners and hot surface igniter for safe, dependable
heating.
4. Redundant gas valve. Safe and efficient. Features 1 gas
control with 2 internal shutoff valves. Valve appearance
varies with furnace model.
5. Vent outlet. Uses PVC pipe to carry flue gas 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 (location in furnace may vary).
9. Condensate drain connection. Collects moisture
condensed from burned gases for disposal into home drain
system. (Location in furnace varies.)
12
1
4
6
18
5
5
11
15
14
13
7
16
9
8
19
10. Heavy--duty blower. Circulates air across the heat
exchangers to transfer heat into the home.
10
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.
A02264
Fig. 2 -- Model 58UVB Furnace
(Upflow Only)
13. Furnace control board.
14. 3--amp fuse provides electrical and component protection.
15. Light emitting diode (LED) on furnace control board.
Status code light is for diagnosing furnace operation and
service requirements.
16. Pressure switch(es) ensure adequate flow of flue gas
through furnace and out vent system.
17. Rollout switch (manual reset) to prevent overtemperature.
18. Junction box for 115--v electrical power supply. (May be
located on right or left side)
19. Transformer (24v) behind furnace control board provides
low--voltage power to furnace control board and
thermostat.
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S
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Do not cover the furnace, store trash or debris near it, or
in any way block the flow of fresh air to the unit.
SAFETY CONSIDERATIONS
Recognize safety information. This is the safety--alert symbol
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 materials may be
combustible.
. 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. DANGER identifies the most serious hazards which
will 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 may 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.
S
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.
To minimize the possibility of serious personal injury, fire,
furnace damage, or improper operation; carefully follow these
safety rules:
!
WARNING
S
Your gas furnace uses air from outside the home for
combustion and vents flue gas to the outdoors. It is not
to be installed using indoor air for combustion. The
vent pipe must terminate outside the structure and must
not be obstructed in any way. The air--intake pipe must
terminate outside the structure or in a well ventilated
area that is isolated from the living space and the garage
(e.g. well ventilated attic or crawlspace). Do not block
or obstruct air openings on furnace or spaces around
furnace.
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury/death or property damage.
Do not keep combustible materials, gasoline, and other
flammable liquids or vapors around your furnace.
!
WARNING
FIRE AND UNIT OPERATION HAZARD
Failure to follow this warning could result in personal
injury/death or property damage.
For proper and safe operation the furnace needs air for
combustion and ventilation. Do not block or obstruct
the openings on the furnace, air openings to the area in
which the furnace is installed, and the space around the
furnace.
BEFORE STARTING YOUR FURNACE
Examine the furnace installation monthly to determine that:
1. All flue gas carrying areas external to the furnace (i.e.
chimney, vent connector) are clear and free of
obstructions.
2. The vent connector is in place, slopes upward and is
physically sound without holes or excessive corrosion.
3. The return--air duct connection(s) is physically sound, is
sealed to the furnace casing, and terminates outside the
space containing the furnace.
A05098
4. The physical support of the furnace is sound without
sagging cracks, gaps, etc. around the base.
Fig. 3 -- Venting
5. There are no obvious signs of deterioration of the furnace.
6. The burner flames are in good adjustment. (See Fig. 5.)
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Keep the area around your furnace clear and free of
combustible materials, gasoline, and other flammable
liquids and vapors.
A92182
A92330
Fig. 4 -- Combustible Materials
Fig. 5 -- Burner Flame
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Steps For Starting Your Furnace
STARTING AND SHUTTING DOWN
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.)
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. Follow these important safeguards:
S
Never attempt to manually light the burners with a
match or other source of flame.
®
A95166
Fig. 7 -- Lowest Temperature Setting
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E
A92319
Fig. 6 -- Do Not Light Burner with Match
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Read and follow the operating instructions on inside of
main furnace 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.
A06188
Fig. 8 -- Close Valve
3. Turn OFF electrical supply to the furnace. (See Fig. 9.)
4. Remove main furnace door. (See Fig. 10.)
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 inside of
main furnace door, or in the “Shutting Down Your
Furnace” section and call your dealer as soon as
possible.
5. The gas valve will have a control switch to turn off and
on. Turn the control switch on the gas control to the OFF
position and wait 5 minutes. (See Fig. 11 or 12.) Then
smell for gas, including near the floor. If you smell gas,
STOP! Follow “B” on furnace label. If you don’t smell
gas, go to next step.
!
6. After waiting 5 minutes, turn the control switch on the gas
control to the ON position. (See Fig. 13 or 14.)
WARNING
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury/death or property damage.
Should the gas supply fail to shut off or if overheating
occurs, turn off the manual gas valve to the furnace
BEFORE turning off the electrical supply. (See Fig. 8.)
S
CHECK AIR FILTER: Before attempting to start
your furnace, be sure the furnace filter is clean and in
place. See “Performing Routine Maintenance” section
in this manual. Then proceed as follows:
A92185
Fig. 9 -- Turn Off Electrical Supply
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1
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3
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C
ON
A06339
Fig. 14 -- Control Switch to ON
7. Replace main furnace door. (See Fig. 15.)
A05099
Fig. 10 -- Remove Furnace Door
8. Turn 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
the room temperature. This will automatically signal the
furnace to start.
11. When the furnace receives the start signal, the inducer is
started. When the pressure switch senses that there is suf--
ficient combustion air, the hot surface igniter is energized.
After the hot surface igniter is heated for 17 seconds, the
gas valve permits gas to flow to the main burners. After
ignition and a time delay of about 30 sec, the furnace
blower will start. Variable--capacity furnaces start at low
speed until the control makes the necessary adjustments to
operate the blower at either the low-- or high--heat speed.
A04150
Fig. 11 -- Control Switch to OFF
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ON
A05100
Fig. 15 -- Furnace Door Replaced
A06338
Fig. 12 -- Control Switch to OFF
A04151
A92359
Fig. 13 -- Control Switch to ON
Fig. 16 -- Turn On Electrical Supply
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4. Turn the switch on the gas control to the OFF position.
(See Fig. 20 or 21.)
A06189
Fig. 17 -- Open Valve
NOTE: If the burners fail to ignite after 4 attempts, the furnace
control system will lock out. If lockout occurs, main burners fail
to light, or blower does not come on, shut down the furnace and
call your dealer for service.
A92185
Fig. 19 -- Turn Off Electrical Supply
12. Set your thermostat to the temperature that satisfies your
comfort requirements.
SUGGESTION: Setting the thermostat back a few degrees
and compensating for the difference with warmer clothing
can make a big difference in your fuel consumption. The
few degrees at the top of your thermostat “comfort level”
are the most costly degrees to obtain.
When the room temperature drops below the temperature selected
on the thermostat, the furnace will switch on automatically.
When the room temperature reaches the temperature selected on
the thermostat, the furnace will be switched off automatically.
A04150
Some thermostats have a FAN mode with 2 selections: AUTO
and ON. When set on AUTO, the furnace blower cycles on and
off. In the ON mode, the furnace blower runs continuously.
Continuous fan keeps the temperature level in your home more
evenly balanced. It also permits the indoor air to be continuously
filtered. ComfortFant, the blower speed can be increased or
decreased if desired due to change of seasons, large gatherings in
your home, etc. Simply change your FAN from ON to OFF for
1 to 3 seconds (or AUTO depending on your thermostat), and
then return to ON. The blower will switch to the next higher
speed. There are at least 3 speeds to choose from. If the blower
is running on its highest speed, a request to change will direct the
blower to return to its lowest speed.
Fig. 20 -- Control Switch to OFF
1
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3
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F
2
C
ON
Shutting Down Your Furnace
A06338
Fig. 21 -- Control Switch to OFF
Should you ever need to shut down your furnace for service or
maintenance, you will need to turn the furnace off. The following
procedures must be followed:
5. Replace the main furnace door. (See Fig. 15.)
6. If the furnace is being shut down because of
malfunction, call your dealer as soon as possible.
a
!
CAUTION
UNIT AND PROPERTY DAMAGE
Failure to follow this caution may result in damage to the
furnace and other property damage.
Furnace is not to be installed, operated, and then turned off
and left turned off in an unoccupied structure during winter.
(See “Heading South for the Winter” procedures in
maintenance section on page 12).
®
PERFORMING ROUTINE
MAINTENANCE
A95166
Fig. 18 -- Lowest Temperature Setting
NOTE: The qualified installer or agency must use only
factory--authorized replacement parts, kits, and accessories when
modifying this product.
1. Set your room thermostat to the lowest temperature
setting. (See Fig. 18.)
2. Turn off electrical supply to the furnace. (See Fig. 19.)
3. Remove main furnace door. (See Fig. 10.)
Installing and servicing heating equipment can be hazardous due
to gas and electrical components.
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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.
(1.) Remove main furnace door. (See Fig. 22.)
(2.) Remove blower access panel. (See Fig. 23.)
NOTE: It will be necessary to remove 2 screws
b. Air Filters Located in Filter Cabinet
All other operations must be performed by trained and qualified
service agency personnel. Observe safety precautions in this
manual, on tags, and on labels attached to the furnace, and other
safety precautions that may apply.
Remove filter cabinet door. (See Fig. 24 and 25.)
NOTE: It will be necessary to remove 1 thumbscrew
3. Remove air filter from furnace.
With proper maintenance and care, your furnace will operate
economically and dependably. Instructions for basic maintenance
are found on this and the following pages. However, before
beginning maintenance, follow these safety precautions:
a. Air Filters Located in Blower Compartment Bottom:
(1.) Slide filter retainer sideways until it is free of
latch. (See Fig. 26.)
(2.) Slide air filter out of furnace. (See Fig. 27.)
b. Air Filters Located in Blower Compartment Side:
(1.) Remove filter retainer from latch. (See Fig. 28.)
!
WARNING
ELECTRICAL SHOCK HAZARD
(2.) Gently remove air filter and carefully turn the
dirty side up (if dirty) to avoid spilling dirt from
the filter. (See Fig. 29.)
Failure to follow this warning could result in personal
injury/death.
Turn off electrical power supply to your furnace before
removing the access doors to service or perform
maintenance.
c. Air Filter Located in Filter Cabinet:
Slide air filter out of furnace. Keep dirty side up (if
dirty) to avoid spilling dirt. (See Fig. 30 and 31.)
4. Inspect the filter. If torn, replace it.
NOTE: If washable filter that was shipped with the furnace has
been replaced by:
!
CAUTION
--Factory specified disposable media filter: Do not clean. If dirty,
replace only with media filter having the same part number and
size. Install with airflow direction arrow pointing towards blower.
--Electronic air cleaner (EAC): Refer to EAC Owner’s Manual
for maintenance information.
CUT HAZARD
Failure to follow this caution may result in minor personal
injury.
Although special care has been taken to minimize sharp
edges, be extremely careful when handling parts or reaching
into the furnace.
Filtering Out Trouble
!
CAUTION
UNIT PERFORMANCE HAZARD
Failure to follow this caution may result in product damage.
Never operate your furnace without a filter in place. Doing
so may damage the furnace blower motor.
An
accumulation of dust and lint on internal parts of your
furnace can cause a loss of efficiency.
A05099
A dirty air filter will cause a loss of airflow in your duct system.
When excessive loss of airflow occurs, the furnace may cycle on
its safety controls. If this condition is left unattended, the furnace
will eventually lock out. It is recommended that the furnace air
filter be checked every 3 or 4 weeks and cleaned if necessary.
Fig. 22 -- Removing Furnace Door
If installed with factory--specified disposable media filter, check
or replace filter before each heating and cooling season. Replace
disposable media filter at least once a year.
The air filter is normally located in the blower compartment or
in the factory--supplied filter cabinet attached to the side or
bottom of the furnace casing. If air filter has been installed in
another location, contact your dealer for instructions. To inspect,
clean, and/or replace the air filter(s), follow these steps:
1. Turn off electrical supply to furnace. (See Fig. 19.)
2. Remove door/access panel.
A93204
a. Air Filters Located in Blower Compartment
Fig. 23 -- Removing Blower Access Panel
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A93011
A06190
Fig. 27 -- Slide Air Filter Out of Furnace
Fig. 24 -- Removing Side Filter Cabinet Door
A93012
Fig. 28 -- Removing Filter Retainer from Latch
A06191
Fig. 25 -- Removing Bottom Filter Cabinet Door
A93010
A93013
Fig. 26 -- Sliding Filter Retainer Sideways
Fig. 29 -- Removing Air Filter
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A00227
Fig. 30 -- Slide Side Filter Out of Furnace
A05100
Fig. 33 -- Replace Furnace Door
A00228
Fig. 31 -- Slide Bottom Filter Out of Furnace
5. If washable filter, wash filter (if dirty) in sink, bathtub, or
outside with a garden hose. Always use cold tap water. A
mild liquid detergent may be used if necessary. Spray
water through filter in the opposite direction of airflow.
Allow filter to dry.
A06192
Fig. 34 -- Replace Side Filter Cabinet Door
6. Reinstall clean air filter.
7. Reinstall filter retainer (for blower compartment locations
only).
8. Replace blower access panel and main furnace door (Fig.
32 and 33.) or filter cabinet door. (Fig. 34 and 35.)
9. Turn on electrical supply to furnace.
If your furnace air filter needs to be replaced, be sure to use a
factory--authorized filter of the same size that was orginally
supplied. Use the filter tables and compare your furnace size with
the proper filter size.
A93205
A06193
Fig. 32 -- Replace Blower Access Panel
Fig. 35 -- Replace Bottom Filter Cabinet Door
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FURNACE AIR FILTER TABLE
!
CAUTION
AIR FILTER LOCATED IN BLOWER COMPARTMENT
FURNACE
FILTER SIZE (IN)
UNIT OPERATION HAZARD
FILTER
TYPE
CASING
WIDTH
(IN.)
Side
Bottom
Return*
Failure to follow this caution may result in property
damage.
Return†*
17---1/2
21
24---1/2
(1) 16 x 25 x 1
(1) 16 x 25 x 1
(1 or 2) 16 x 25 x 1
(1) 16 x 25 x 1
(1) 20 x 25 x 1
(1) 24 x 25 x 1
Cleanable
Cleanable
Cleanable
If your furnace makes an especially loud noise when the
main burners light, shut down your furnace and call your
dealer.
AIR FILTER LOCATED IN FILTER CABINET
FILTER CABINET
HEIGHT (IN)
FILTER
SIZE (IN)
FILTER
TYPE
To inspect the combustion area and vent system, you will need
a flashlight. Refer to Fig. 3 and proceed as follows:
Cleanable or
Disposable
16
(1) 16 x 25 x 1*
1. Turn off the gas and electrical supplies to the furnace and
remove the main furnace door. (See Fig. 8, 9, and 10.)
(1) 20 x 25 x 1*
or (1) 20 x 25 x
4---5/16
Cleanable or
Disposable
20
2. Remove burner enclosure front. (See Fig. 36.)
(1) 24 x 25 x 1*
or (1) 24 x 25 x
4---5/16
Cleanable or
Disposable
Inspect the gas burners, igniter area, and remainder of furnace for
dirt, rust, soot, or scale.
24
*Factory---provided with the furnace. Filters may be field modified by
cutting filter material and support rods (3) in filters.
{ Upflow only. Alternate sizes and additional filters may be ordered from
your dealer.
!
WARNING
CARBON MONOXIDE POISONING HAZARD
!
WARNING
Failure to follow this warning could result in personal
injury or death.
PERSONAL INJURY HAZARD
If dirt, rust, soot, or scale accumulations are found, call
your dealer. Do not operate your furnace.
Failure to follow this warning could result in personal
injury.
Use care when cutting support rods in filters to protect
against flying pieces and sharp rod ends. Wear safety
glasses, gloves, and appropriate protective clothing.
3. Inspect the combustion--air and vent PVC pipes for sags,
holes, cracks, water leaks, blockage or disconnections.
Horizontal portions of pipes must slope downward toward
furnace.
COMBUSTION AREA AND VENT
SYSTEM
Visually inspect the combustion area and vent system before each
heating season. Make sure that all PVC pipes leading into the
combustion area and vent are free from any cracks and sags.
4. Reinstall burner enclosure front.
5. If your furnace is free of the above conditions, replace
main furnace door and turn on electrical and gas supplies
to the furnace. (See Fig. 15, 16, and 17.)
6. Start the furnace and observe its operation. Watch the
burner flames to see if they are clear blue, almost
transparent. (See Fig. 37.) If you observe a suspected
malfunction, or the burner flames are not clear blue, call
your dealer.
!
WARNING
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
If holes are found in the pipes or if any portion has
become disconnected, toxic fumes can escape into your
home. DO NOT OPERATE YOUR FURNACE. Call
your dealer for service.
Check the combustion--air intake and vent pipe on the outside of
your home for blockage.
When dirt, soot, scale, or rust is allowed to build up, your furnace
can suffer
a
loss of efficiency and perform improperly.
Accumulations on the main burners can result in firing out of
normal sequence. This delayed ignition creates an alarmingly
loud sound.
A00223
Fig. 36 -- Remove Burner Enclosure Front
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A92330
Fig. 37 -- Burner Flame
Heading South for the Winter?
Don’t Forget Your Furnace!
A06456
Fig. 38 -- Upper Inducer Housing Drain
Connection Cap
!
CAUTION
UNIT AND PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damage to the
furnace and other property damage.
If the furnace is installed in an unconditioned space where
the ambient temperatures may be 32_F or lower, freeze
protection measures must be taken to prevent minor
property or product damage.
Since the furnace uses a condensing heat exchanger, some water
will accumulate in the unit as a result of the heat transfer process.
Therefore, once it has been operated, it cannot be turned off and
left off for an extended period of time when temperatures will
reach 32_F or lower unless winterized. Follow these procedures
to winterize your furnace:
1. Obtain propylene glycol (RV/swimming pool antifreeze or
equivalent).
A06457
Fig. 39 -- Pour Antifreeze
!
CAUTION
5. Connect field--supplied 1/2--in. ID tube to upper inducer
housing drain connection.
UNIT COMPONENT DAMAGE HAZARD
6. Insert field--supplied funnel into tube.
Failure to follow this caution may result in damage to the
furnace and other property damage.
7. Pour 1 quart of antifreeze into funnel/tube. Antifreeze
should run through inducer housing, overfill condensate
trap, and flow into open field drain. (See Fig. 39.)
Do not use ethylene glycol (Prestone II antifreeze coolant or
equivalent). Failure of plastic components may occur.
8. Remove funnel and tube from inducer housing and replace
drain connection cap and clamp.
2. Turn off electrical supply to the furnace. (See Fig. 19.)
3. Remove main furnace door. (See Fig. 22.)
9. Replace main furnace door. (See Fig. 33.)
4. Remove upper inducer housing drain connection cap.
(See Fig. 38.)
10. Propylene glycol need not be removed before restarting
furnace.
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BEFORE YOU REQUEST A SERVICE
CALL
If your furnace is not operating or not performing properly, you
may save the expense of a service call by checking a few things
yourself before calling for service.
!
CAUTION
UNIT AND PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in damage to
unit components.
For Insufficient Airflow:
This furnace is designed for continuous return--air
minimum temperature of 60_F db or intermittent operation
down to 55_F db, such as when used with a night setback
thermostat. Return--air temperature must not exceed 85_F
db.
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Check for dirty air filter(s).
Check for blocked return--air or supply--air grilles
throughout your home. Ensure they are open and
unobstructed.
If problem still exists, call your dealer for service.
If you choose to leave your furnace on during extended absences
do not set your thermostat lower than the limits shown in the
Caution box above.
To protect your property from damage from potential problems
due to unintended interruptions in utility services or other events,
it is recommended that you either winterize your plumbing
system or have someone check on your house regularly while
you are away.
If Furnace Fails to Operate:
Follow this checklist step by step, advancing to the next step only
if furnace fails to start.
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Check thermostat for proper temperature. Is thermostat
set above room temperature?
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Is thermostat set on HEAT?
Your dealer or a licensed plumber can give you additional advice
about winterizing your plumbing system.
Check fuses and circuit breakers. Is electrical supply
on?
A CHECK--UP CHECKLIST
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Is manual shutoff valve in gas supply pipe in open
position? (Follow start--up procedures if you open gas
valve.)
Your furnace represents an important investment in your family’s
comfort and your home’s value. To keep it performing properly
and to prevent future problems, have a trained service specialist
give your furnace a professional check--up annually. The
following checklist can be used as a guideline to proper service:
NOTE: Turn off electrical supply before continuing with
checklist.
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Is control switch on gas valve in ON position? (Follow
startup procedures if you must reset switch to ON
position.)
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Inspect all flue gas passages, burners, heat exchangers,
coupling box(es), and inducer assembly.
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Inspect all combustion--air and vent piping inside
structure and vent pipe termination outside the
structure.
S
Check manual reset flame rollout switch located on the
burner box. If furnace has experienced high
temperature conditions, this switch will shut off the
furnace. Reset it by pushing the button on the switch. If
it trips again, shut down the furnace and call for
service. See “Shutting Down Your Furnace” section in
this manual.
S
S
Check gas pipes leading to and inside your furnace for
leaks.
Inspect and clean the blower motor and wheel.
NOTE: The inducer and blower motors are pre--lubricated and
require no additional lubrication. These motors can be identified
by the absence of oil ports on each end of the motor.
S
Check for obstructions around the vent termination
outside the structure.
S
S
Inspect and change or clean air filters(s), if necessary.
If the furnace still fails to operate, call your service representative.
Inspect all supply-- and return--air ducts for
obstructions, air leaks, and insulation. Remedy any
problem when necessary.
For your convenience, record the furnace product and serial
numbers on back page. Should you ever require service, you will
have ready access to the information needed by your service
representative.
S
Inspect the return--air duct connections(s) at the furnace
to ensure it is physically sound, sealed to the furnace
casing, and terminates outside the space containing the
furnace.
This furnace has a light--emitting--diode (LED) status code
display to aid the installer, service technician, or homeowner
while installing or servicing the unit. The LED code can be seen
by removing the main furnace door and viewing the LED
through the view port in the blower access panel. (See Fig. 2.)
S
S
Inspect electrical wiring, connections, and components
for loose connections.
Perform an operational checkout to determine whether
your furnace is working properly and if it requires
adjustments.
S
Inspect all condensate drain tubes and condensate trap
assembly for leaks. The condensate removal system
should be cleaned annually by a qualified service
agency. Refer to the Service and Maintenance
Instructions for further information.
S
S
Examine the physical support of the furnace. Support
should be sound with no cracks, sagging, gaps, etc.
around the base.
Check furnace for any obvious signs of deterioration.
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INSTALLATION DATA
Date Installed
______________________________
AIR CONDITIONER OR HEAT PUMP
OUTDOOR UNIT:
Dealer Name
_______________________________
Product No.
__________________________________
Address
Model No.
____________________________________
___________________________________
City
Serial No.
_____________________________________
_____________________________________
State ______________ Zip ____________
INDOOR COIL:
Telephone
_________________________________
Product No.
__________________________________
Model No.
____________________________________
FURNACE
Product No.
_______________________________
Serial No.
_____________________________________
Model No.
_________________________________
Serial No.
_________________________________
HEATING & COOLING
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or classified section of your local telephone directory under the
“Heating Equipment” or “Air Conditioning Contractors & Systems” heading for dealer listing by brand name.
Carrier Corporation S Indianapolis, IN
Have available the Model N4o.6, 2Se3ri1es Letter, & Serial No. of your equipment to ensure correct replacement part.
Copyright 2006 Carrier Corporation 7310 W. Morris St. Indianapolis, IN 46231
Printed in the U.S.A.
Edition Date: 09/06
Catalog No: OM58---118
Manufacturer reserves the right to change, at any time, specifications and design without notice and without obligation.
Replaces: New
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