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HEATING & COOLING
WARNING: If the information in this manual
is not followed exactly, a fire or explosion may
result causing property damge, personal in-
jury 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 eletrical 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 perform-
ed by a qualified installer, service
agency or the gas supplier.
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Welcome to toda y’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
Inducer
2
Rating Plate (Model and Serial No.)
3
Gas Valve Control Knob or Electric Switch (On/Off)
4
Gas Valve
5
Gas Burner
6
Flame Sensor
7
Air Filter Retainer
8
Air Filter
9
Blower and Blower Motor
10
Draft Safeguard Tube and Switch
11
Gas Manifold
12
Replaceable Fuse Link
13
Hot Surface Ignitor
14
Blower Door Safety Switch
15
Masonry Chimney Adapter (When Used)
(Blocked Vent Shutoff Switch Inside)
16
Vent Pipe
17
Furnace Control
MODEL 58YAV
UPFLOW FURNACE
1
2
3
4
5
6
7
8
9
1
16
15
10
11
12
13
14
17
2
2
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I
mportant facts
Your furnace must have adequate surrounding airflow for
efficient combustion and safe ventilation. Do not enclose
it in an airtight room or “seal” it behind solid doors.
T o minimize the possibility of serious personal injury, fire,
furnace damage, or improper operation;
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 many
products around the home, such as: water softener salts,
laundry bleaches, detergents, adhesives, paints, v arnishes,
paint strippers, waxes, and plastics.
Make sure the combustion air for your furnace does not
contain any of these compounds. The combustion air dur ing remodeling must be fresh and uncontaminated. If these
compounds are burned in your furnace, the heat exchangers and metal vent system 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 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.
NOTE:
The qualified installer or agency must use only
factory-authorized replacement parts, kits, and accessories when modifying this product.
This furnace contains safety devices which must be manually reset or replaced. 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.
carefully follow
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 . 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
WARNING 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.
!
will result in severe personal injury or death.
Starting your 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. Follow these important safeguards:
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• Never attempt to manually light the burners with a match
or other source of flame.
• Read and follow the operating instructions on the furnace, especially the item that reads as follows:
W ait 5 minutes to clear out an y gas. Then smell for gas,
including near the floor. If you smell gas,
“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.
!
WARNING
Should overheating occur, or the gas valve fail
to shut off the gas supply, turn off the manual
gas valve (See Fig. 6) 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.
Check Air Filter: Before attempting to start your fur-
•
nace, be sure the furnace filter is clean and in place. (See
the maintenance section of this manual.) Then proceed as
follows:
3
STOP! Follow
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Steps for starting your furnace
1. Set your room thermostat to the lowest temperature
setting. (See Fig. 5.)
2. Close the external manual gas valve. (See Fig. 6.)
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F
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ON
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ON
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ON
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11 12
6 7
3. Turn OFF the electrical supply to the furnace.
(See Fig. 7.)
4. Remove control access door. (See Fig. 8.)
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5. The gas valve will have EITHER a 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. 9 or 10.)
6. After waiting 5 minutes, turn the control knob or
switch on the gas valve to the ON position.
(See Fig. 11 or 12.)
7. Replace control access door. (See Fig. 13.)
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8. Turn ON the electrical supply to the furnace.
(See Fig. 14.)
9. Open the external manual gas valve. (See Fig. 15.)
10. Set the room thermostat to a temperature 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.
11. After 32 to 70 sec, the gas valve permits gas to flo w to
the main burners where it is ignited. Hot flames begin
to warm the furnace's heat exchanger. After a time
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delay of approximately 45 sec, the furnace blower is
switched on.
NOTE:
If the main burners fail to ignite, the furnace control
system will go through 3 more ignition cycles. Then, if
burners fail to ignite, the system will lockout. If lockout
occurs, or the blower doesn't come on—shut down your
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 on
extremely cold days. 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 be switched on
automatically. When the room temperature reaches the
degree selected on the thermostat, the furnace will be
switched off automatically.
Some thermostats have a “fan” mode with 2 selections:
AUTO or ON. When set on AUTO, the furnace blower
cycles on and off, controlled by the thermostat. In the ON
position, the furnace blower runs continuously except for
a 45-sec delay at the “call for heat.” This keeps the temperature level in your home more e venly balanced. It also
continuously filters the indoor air.
Shutting down your furnace
Should you ever suspect a malfunction in your furnace,
you will need to turn the furnace off. The following procedures must be followed:
1. Set your room thermostat to the lowest temperature
setting. (See Fig. 16.)
2. Close the external manual gas valve. (See Fig. 6.)
3. Turn OFF the electrical power to your furnace.
(See Fig. 17.)
4. Remove the control access door on your furnace.
(See Fig. 8.) Removal of the blo wer access door is not
required.
5. T urn the control knob or switch on the gas valve to the
OFF position. (See Fig. 18 or 19.)
6. Replace the control access door. (See Fig. 13.)
7. If the furnace is being shut down because of a malfunction, call your dealer as soon as possible.
F
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Performing routine maintenance
With the proper maintenance and care, your furnace will
operate economically and dependably . Basic maintenance,
which can easily be accomplished by someone who
follows the directions, is found on this and the following
pages. However, before beginning maintenance, follow
these safety precautions:
!
WARNING
Turn off electrical power supply to your furnace
before removing the access doors to perform service or maintenance. A failure to follow this warning could result in personal injury or death.
!
CAUTION
Although special care has been taken to minimize
sharp edges, be extremely careful when handling
parts or reaching into the furnace.
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ON
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Filtering out trouble
A dirty filter will cause excessive stress on the furnace and
can cause it to overheat and automatically shut down. The
furnace filter should be checked every 3 or 4 weeks and
cleaned if necessary.
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If your furnace filter needs replacing, be sure to use the
same size and type of filter that was originally supplied.
Use the Furnace Filter T able on the next page and compare
your furnace size with the proper filter size.
!
CAUTION
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.
The air filter is normally located in the blower compartment. If the filters have been installed in another location,
contact your dealer for instructions. T o inspect, clean, and/
or replace the air filter(s), follow these steps:
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1. Turn OFF the electrical supply to the furnace.
(See Fig. 17.)
2. Remove control door and blower access door.
20 21
3. Push filter retainer toward the bracket opening to
release the filter. (See Fig. 20.)
4. Gently remove the filter and carefully turn the dirty
side up (if dirty) to avoid “spilling” dirt from the filter .
(See Fig. 21.)
Combustion area and vent system
Inspect the combustion area and vent system before each
heating season. An accumulation of dirt, soot, or rust can
mean a loss of efficiency and improper performance.
Buildups on the main burners can cause faulty firing. This
“delayed ignition” is characterized by an alarmingly loud
sound. If your furnace makes a loud noise when the main
burners are ignited, shut down the furnace—call your ser vicing dealer.
Use your flashlight and follow these steps for inspecting
the combustion area and vent system of your furnace:
1. T urn of f the gas and electrical supplies to the furnace
and remove the access doors. (See Fig. 6, 7, and 8.)
2. Carefully inspect the gas burner (see Fig. 23) for dirt,
rust, or scale. Then inspect the inducer, vent connection area, and the vent pipe for rust.
NOTE:
If dirt, rust, soot, or scale accumulations are found,
call your servicing dealer. DO NOT OPERATE THE
FURNACE.
3. Inspect the vent pipe for a sag, holes, or a disconnection. A horizontal v ent pipe must slope upw ard away
from the furnace. If rusty joints or seams, or signs of
water leakages are found call your dealer for service.
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5. Inspect the filter. If torn, replace the filter.
6. Wash the filter (if dirty) in a sink, bathtub, or outside
with a garden hose. Al ways use cold tap water . A mild
liquid detergent may be used if necessary . Spray water
through the filter in the opposite direction of airflow.
Allow filter to dry.
7. Reinstall the clean filter.
8. Put filter retainer back in the bracket opening and lock
it in place.
9. Replace blower door and control access door and turn
ON electrical power to your furnace. (See Fig. 13
and 22.)
NOTE:
If side return ducts are used, 2 filters may be
required in some models. The procedure listed above may
be used to remove side filters.
FURNACE FILTER TABLE
FURNACE
CASING
WIDTH
14-3/16 (1) 16 x 25 x 1* (1) 14 x 25 x 1* Cleanable
17-1/2 (1) 16 x 25 x 1* (1) 16 x 25 x 1* Cleanable
21 (1) 16 x 25 x 1* (1) 20 x 25 x 1* Cleanable
24-1/2 (2) 16 x 25 x 1* (2) 12 x 25 x 1* Cleanable
*Factory-provided with the furnace. Filters may be field modified by cutting and
folding the frame as indicated on the filter. Alternate sizes and additional filters
may be ordered from your dealer.
FILTER SIZE
FILTER
TYPESide Return Bottom Return
!
WARNING
If holes caused by deterioration are found—or
holes in the vent pipe—or if the vent pipe is obstructed or is not connected—toxic fumes can escape into your home. DO NOT OPERATE YOUR
FURNACE. Call your dealer for service. A failure to
follow this warning could result in personal injury
or death.
4. Replace the access doors and restore gas and electrical
supplies to the furnace. Be sure bottom door flange is
inside of the furnace casing. (See Fig. 13, 14, 15, and 22.)
5. Start the furnace and observe its operation. If possible,
watch the burner flames. Are they burning bright blue?
If not (or if you suspect some other malfunction), call
your servicing dealer.
Before you request a “service call”
Before you call f or service, chec k for se veral
easily solved problems:
• Check for sufficient airflow surrounding the furnace.
Check the air filter for dirt. Check for blocked return-air
or supply-air grilles. Be sure they are open and unobstructed. If this isn't the cause, call your servicing dealer.
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If your furnace isn’t operating at all, check the following
list for easily solved problems:
• Is your thermostat set above room temperature? Is the
HEAT mode selected?
• Is the electrical power supply switch ON? Is the blower
access door firmly in place? Are an y fuses blo wn? (There
is a 3-amp automotive type fuse on the furnace control
board.) Has a circuit breaker tripped?
• Is the manual shutoff valv e in the gas supply pipe leading
to the furnace open? Does the lever point in the same direction that the pipe runs (open)? Or is it at right angles
(closed)?
NOTE:
Before proceeding with the next checks, turn OFF
the electrical power supply to the furnace. Remove the
access doors.
• Is the control knob or switch on the gas valve turned to
the ON position? If this or the preceding check shows an
interruption in the gas supply, make sure the gas has not
been shut off for safety reasons. If nothing else seems to
be wrong, follow the startup procedures found on pages 3,
4, and 5 of this user’s manual.
• If for some reason the vent is blocked, the draft safeguard switch or blocked vent shutoff switch (when used)
will shut off the furnace. Reset the switch by pushing the
button located on the switch. (See page 2 for switch
location.)
If the switch trips a second time, turn off the furnace and
call for service.
• If your furnace still fails to operate, call your servicing
dealer for troubleshooting and repairs. T ell your dealer the
model and serial numbers for your furnace. (You should
have them recorded on page 8 of this booklet.) By knowing
exactly which furnace you have, the dealer may be able to
offer suggestions over the phone, or save valuable time
through knowledgeable preparation for the service call.
Regular dealer maintenance
In addition to the type of routine maintenance you might
be willing to do, your furnace should be inspected regu-
larly by a properly trained service technician. An annual
inspection (or biennial inspection, at least) should include
the following:
1. Inspection of all combustion product passages—
including the burners, heat exchanger, inducer, and
vent pipe.
2. Inspection of all combustion air and ventilation air
passages and openings.
3. Close check of all gas pipes leading to (and inside of)
your furnace for leaks.
4. Inspection, cleaning, and lubrication (when required)
of the blower motor and wheel.
NOTE:
Refer to the unit Service Procedures for blower
motor oiling information. When required, the motor
should be oiled by a qualified service technician. (Wrong
oil type or excessive oil is detrimental to the motor.)
5. Routine inspection and cleaning/replacement of the
air filter.
6. Inspection of all supply- and return-air ducts for
obstructions, air leaks, and insulation. Any problems
found should be resolved at this time.
7. Inspection of furnace installation for proper support
and any obvious deterioration of the furnace. The support must be sound and without sags, gaps, cracks,
etc., around the furnace base so as to provide an air
seal between the support and furnace.
8. A check for loose connections attaching individual
components. Inspection of all electrical wiring and
their connections.
9. Operational check of the furnace itself to determine
working condition. Repair or adjustment should be
made at this time.
Ask your servicing dealer for further details about an economical service contract that covers seasonal inspections.
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INSTALLATION DATA
Date Installed
Dealer Name
Address
City
State Zip
Telephone
FURNACE
Product No.
Model No.
Serial No.
ACCESSORIES:
Product No.
Model No.
Serial No.
SPLIT-SYSTEM
OUTDOOR UNIT:
Product No.
Model No.
Serial No.
INDOOR COIL:
Product No.
Model No.
Serial No.
Product No.
Model No.
Serial No.
Product No.
Model No.
Serial No.
Product No.
Model No.
Serial No.
TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classified section of your local telephone directory under the
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations .
Copyright 1996 Carrier Corporation Form: OM58-80 Replaces: New
“Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ heading for dealer listing by brand name.
Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part.
Carrier Corporation Syracuse, New York 13221
®
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Printed in the U.S.A. 7-96 PC 101 Catalog No. 565-821
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