Carrier 58UVB series Instruction Manual

1
58UVB
DEDICATED UPFLOW CONDENSING
GAS FURNACE
Owner’s Information Manual
NOTE TO INSTALLER:
THIS MANUAL MUST BE LEFT WITH THE EQUIPMENT
USER.
USER: Please read all instructions in the manual and retain all
manuals for future reference.
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.
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.
!WARNING
CERTIFIED
As an ENERGY STAR®Partner,
Carrier Corporation has deter-
mined that this product meets
the ENERGY STAR®guidelines
for energy efficiency.
A05097
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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TABLE OF CONTENTS
WELCOME TO A NEW GENERATION OF COMFORT 2...
FURNACE COMPONENTS 3..........................
SAFETY CONSIDERATIONS 4........................
BEFORE STARTING YOUR FURNACE 4................
STARTING AND SHUTTING DOWN YOUR FURNACE 5..
Steps for Starting Your Furnace 5..................
Shutting Down Your Furnace 7....................
PERFORMING ROUTINE MAINTENANCE 7............
Filtering Out Trouble 8............................
COMBUSTION AREA AND VENT SYSTEM 11..........
Heading South for the Winter 12...................
A CHECK--UP CHECKLIST 13.........................
BEFORE YOU REQUEST A SERVICE CALL 13..........
INSTALLATION DATA 14............................
WELCOME TO A NEW GENERATION OF
COMFORT
Congratulations! In light of rising energy costs, the 58UVB
WeatherMaker Infinity, Gas--Fired, Upflow, 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 95%*
of the heat generated during combustion is captured and delivered
inside your home. That is more than a 33%* 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 for this furnace
are based on standard U.S. Department of Energy test procedures.
A05097
Fig. 1 -- Model 58UVB Variable Capacity Furnace

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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 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.)
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. 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.
810
5
15
14
13
16
9
11
5
217
3
4
12
18
6
1
7
19
A02264
Fig. 2 -- Model 58UVB Furnace
(Upflow Only)

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SAFETY CONSIDERATIONS
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. 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.
To minimize the possibility of serious personal injury, fire,
furnace damage, or improper operation; carefully follow these
safety rules:
SYour 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.
A05098
Fig. 3 -- Venting
SKeep the area around your furnace clear and free of
combustible materials, gasoline, and other flammable
liquids and vapors.
A92182
Fig. 4 -- Combustible Materials
SDo not cover the furnace, store trash or debris near it, or
in any way block the flow of fresh air to the unit.
SA 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.
SThis 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.
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.
!WARNING
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.
4. The physical support of the furnace is sound without
sagging cracks, gaps, etc. around the base.
5. There are no obvious signs of deterioration of the furnace.
6. The burner flames are in good adjustment. (See Fig. 5.)
A92330
Fig. 5 -- Burner Flame

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STARTING AND SHUTTING DOWN
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. Follow these important safeguards:
SNever attempt to manually light the burners with a
match or other source of flame.
A92319
Fig. 6 -- Do Not Light Burner with Match
SRead 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.
SIf 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.
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.)
!WARNING
SCHECK 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:
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.)
®
A95166
Fig. 7 -- Lowest Temperature Setting
C
L
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E
A06188
Fig. 8 -- Close Valve
3. Turn OFF electrical supply to the furnace. (See Fig. 9.)
4. Remove main furnace door. (See Fig. 10.)
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.)
A92185
Fig. 9 -- Turn Off Electrical Supply

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A05099
Fig. 10 -- Remove Furnace Door
A04150
Fig. 11 -- Control Switch to OFF
O
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F
2
3
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P
ON
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C
A06338
Fig. 12 -- Control Switch to OFF
A04151
A04151
Fig. 13 -- Control Switch to ON
O
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F
2
3
1
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ON
O
F
F
C
A06339
Fig. 14 -- Control Switch to ON
7. Replace main furnace door. (See Fig. 15.)
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.
A05100
Fig. 15 -- Furnace Door Replaced
A92359
Fig. 16 -- Turn On Electrical Supply

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O
P
E
N
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.
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.
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.
Shutting Down Your Furnace
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:
®
A95166
Fig. 18 -- Lowest Temperature Setting
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.)
4. Turn the switch on the gas control to the OFF position.
(See Fig. 20 or 21.)
A92185
Fig. 19 -- Turn Off Electrical Supply
A04150
Fig. 20 -- Control Switch to OFF
O
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3
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ON
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C
A06338
Fig. 21 -- Control Switch to OFF
5. Replace the main furnace door. (See Fig. 15.)
6. If the furnace is being shut down because of a
malfunction, call your dealer as soon as possible.
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).
CAUTION
!
PERFORMING ROUTINE
MAINTENANCE
NOTE: The qualified installer or agency must use only
factory--authorized replacement parts, kits, and accessories when
modifying this product.
Installing and servicing heating equipment can be hazardous due
to gas and electrical components.

8
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 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.
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:
ELECTRICAL SHOCK HAZARD
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.
!WARNING
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.
CAUTION
!
Filtering Out Trouble
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.
CAUTION
!
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.
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.
a. Air Filters Located in Blower Compartment
(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
Remove filter cabinet door. (See Fig. 24 and 25.)
NOTE: It will be necessary to remove 1 thumbscrew
3. Remove air filter from furnace.
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.)
(2.) Gently remove air filter and carefully turn the
dirty side up (if dirty) to avoid spilling dirt from
the filter. (See Fig. 29.)
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:
--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.
A05099
Fig. 22 -- Removing Furnace Door
A93204
Fig. 23 -- Removing Blower Access Panel

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A06190
Fig. 24 -- Removing Side Filter Cabinet Door
A06191
Fig. 25 -- Removing Bottom Filter Cabinet Door
A93010
Fig. 26 -- Sliding Filter Retainer Sideways
A93011
Fig. 27 -- Slide Air Filter Out of Furnace
A93012
Fig. 28 -- Removing Filter Retainer from Latch
A93013
Fig. 29 -- Removing Air Filter

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A00227
Fig. 30 -- Slide Side Filter Out of Furnace
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.
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
Fig. 32 -- Replace Blower Access Panel
A05100
Fig. 33 -- Replace Furnace Door
A06192
Fig. 34 -- Replace Side Filter Cabinet Door
A06193
Fig. 35 -- Replace Bottom Filter Cabinet Door