User’s Information Guide
Condensing Gas Furnaces
Fan Assisted Combustion System
Upflow / Horizontal and Downflow / Horizontal
CAUTIONisusedtoindicateunsafepracticeswhichcould
result in minor injury or property damage.
WARNING: Iftheinformationinthismanualis
not followed exactly, a fire or explosion may
result causing property damage, personal in-
jury or loss of life.
There must be a free flow of fresh air sufficient for efficient
combustion and safe ventilation of your furnace. Do not
allow the louvers on the front panels of your furnace to
become blocked as this will restrict the flow of fresh air.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
The combustion air for your furnace must be fresh uncon-
taminatedair. Paints,varnishes,laundrybleaches,deter-
gents, many household cleaners, water softening salts,
adhesives, and all such products release fumes containing
compounds which could lead to early heat exchanger and
vent system deterioration. Do not store these type of
products near your furnace and consider fresh air for your
furnace during construction or remodeling.
— 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 build-
ing.
Neverstoregasoline,combustiblematerials,orother
flammable liquids or vapors near your furnace.
If you have a problem, check the "Problem Solver" section
of this manual before you call for a possibly unneeded
service call.
•
•
Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
If you cannot reach your gas sup-
plier, call the fire department.
Parts and controls of this furnace are unique. Should
service or modification be required, be sure your servicer
uses only factory authorized parts, kits, or accessories for
this furnace.
— Installation and service must be per-
formed by a qualified installer, service
agency or the gas supplier.
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors
can cause improper and dangerous op-
eration.
GENERAL INFORMATION
WARNING: Improper installation, adjustment, al-
teration, service or maintenance can cause injury
or property damage. Refer to the installation in-
structions provided with the furnace and this
manual. For assistance or additional information
consult a qualified installer, service agency or the
gas supplier.
▲
WARNING:
BODILY INJURY CAN RESULT FROM
HIGH VOLTAGE ELECTRICAL COMPONENTS, FAST MOVING FANS,
AND COMBUSTIBLE GAS. FOR PROTECTION FROM THESE
INHERENT HAZARDS DURING INSTALLATION AND SERVICING,
THE ELECTRICAL SUPPLY MUST BE DISCONNECTED AND THE
MAIN GAS VALVE MUST BE TURNED OFF. IF OPERATING CHECKS
MUST BE PERFORMED WITH THE UNIT OPERATING, IT IS THE
TECHNICIANS RESPONSIBILTY TO RECOGNIZE THESE HAZARDS
AND PROCEED SAFELY.
This information is intended for use by individuals pos-
sessing adequate backgrounds of electrical and mechani-
cal experience. Any attempt to repair a central air condi-
tioning product may result in personal injury and/or prop-
erty damage. American Standard Inc. or seller cannot be
responsible for the interpretation of this information, nor
can it assume any liability in connection with its use.
▲
WARNING:
DO NOT USE THIS UNIT IF
ANY PART HAS BEEN UNDER WATER. IMMEDIATELY
CALL QUALIFIED SERVICE TECHNICIAN TO
UnderstandthesignalwordsDANGER,WARNING,AND
CAUTION. Thesewordsaresafetyalertwords. DANGER
indicates the most serious hazards which will result in
severe personal injury or death. WARNING indicates
hazards which could result in personal injury or death.
A
INSPECT THE FURNACE AND TO REPLACE ANY
PART OF THE CONTROL SYSTEM AND ANY GAS
CONTROL WHICH HAS BEEN UNDER WATER.
© American Standard Inc. 2001
Pub. No. 32-5022-10
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Upflow / Horizontal Furnace Filters
Downflow/Horizontal furnaces are factory supplied with 2 stan-
dardsizepermanenttypeairfilterswhichmaybelocatedremote
to the furnace or in the return air duct. Check with your dealer
for the location of your filters.
The Upflow/Horizontal furnace when installed horizontally re-
quires a horizontal filter kit. The filters may be located remote
to the furnace or in the return air duct near the furnace. Check
with your dealer for the location of your filters.
A downflow/horizontal furnace return air filter application, as
shown, features two 14" x 20" x 1" filter in the 17-1/2" wide
furnace cabinets; or two 16" x 20" x 1" filter in the 21" and 24-1/
2" wide furnace cabinets.
An upflow/horizontal furnace in horizontal return air filter
application, as shown, features two 16" x 20" x 1" filters in the 17-
1/2", 21" and 24-1/2" wide furnace cabinets.
DOWNFLOW FILTER
A downflow/horizontal furnace return air filter application, as
shown, features two 14" x 20" x 1" filter in the 17-1/2" wide
furnace cabinets; or two 16" x 20" x 1" filter in the 21" and 24-1/
2" wide furnace cabinets.
UPFLOW/HORIZONTAL WITH FILTER KIT
Toreplacefilters, removethefilteraccessdoor, liftthefilterfrom
the lower bracket and shift the filter to the side to free the top
filter from the bracket and slide the filters out through the filter
access door. After cleaning, replace the filters in the same
manner making sure that the filters are secured in place in both
top and bottom filter brackets. Replace filter access door.
Air filters may also be located outside of the furnace using a
remote filter grille. The filter grille could be in a hallway, wall,
or in the ceiling. Check with your dealer for the exact location of
your filter and the method of changing the filters.
UPFLOW (Vertical) FILTER TABLES
REQUIRED FILTERS - BOTTOM
CABINET WIDTH
17-1/2"
FILTER QUANTITY & SIZE
1 - 17" X 25" X 1"
DOWNFLOW/HORIZONTAL FILTER
21"
1 - 20" X 25" X 1"
24-1/2"
1 - 24" X 25" X 1"
DOWNFLOW (Vertical) FILTER TABLE
REQUIRED FILTERS - DOWNFLOW
REQUIRED FILTERS - SIDE **
CABINET WIDTH
FILTER QUANTITY & SIZE
1 - 17" X 25" X 1"
CABINET WIDTH
17-1/2"
FILTER QUANTITY & SIZE
2 - 16" X 20" X 1"
17-1/2"
21"
1 - 20" X 25" X 1"
21"
2 - 16" X 20" X 1"
24-1/2"
1 - 24" X 25" X 1"
24-1/2"
2 - 16" X 20" X 1"
** ON UPFLOW 5 TON AIRFLOW MODELS, IF THE
AIRFLOW REQUIREMENT EXCEEDS 1800 CFM, THESE
MODELS WILL REQUIRE FILTERS ON BOTH SIDES OR 1
SIDE AND THE BOTTOM, OR JUST THE BOTTOM
Pub. No. 32-5022-10
Page 3
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The problem solver.
A furnace is not a household appliance. It is complex and
requires professional maintenance and repair.
of your furnace should be made by a qualified service agency at
the start of each heating season.
That’s why attempts at “do-it-yourself” repairs on an in-war-
ranty unit may void the remainder of your warranty.
Keep your furnace looking like new for years.
Clean the enamel finish of your furnace with ordinary soap and
water. For stubborn grease spots, use a household detergent.
Lacquer thinner or other synthetic solvents may damage the
finish.
Other than performing the simple maintenance recommended
in this manual, you should not attempt to make any adjust-
ments to your furnace. Your dealer will be able to take care of
any questions or problems you may have. A periodic inspection
Save time and money. Before calling for service, check the following:
Problem
No Heating - Blower
Does not operate
Possible Trouble
1. Thermostat set incorrectly.
Possible Remedy
1. Adjust thermostat See operating
instructions
2. Blown fuse or tripped circuit breaker.
3. Defective component.
2. Replace or reset protective device
or call for servicer.
3. Most controls are automatic and will
recycle. If your unit still does not
operate call for servicer.
4. Burner does not ignite.
5. Main gas line turned off.
6. Blower door removed or ajar.
4. Call servicer.
5. Have gas company check.
6. Close door securely to restore power
to blower and gas valve.
7. Lockout
7. Turn power on-off-on-off twice
in 30 secs.
Insufficient Heating -
Blower operates
continuously
1. Dirty air filters.
1. Clean or replace filters.
2. Blocked supply or
return registers.
2. Make sure registers are open and
No obstacles blocking off the air.
No Heat - Vent motor
is running
Restricted or plugged furnace
condensate drain.
1. Remove drain clamps to condensate
trap and drain pan outlet
2. Flush or clear drain blockage.
3. Reinstall clamps.
Unusual Noise
Call your servicer
The following warning complies with State of California law, Proposition 65.
WARNING:
This product contains fiberglass wool insulation! Fiberglass dust and ceramic fibers are be-
lieved by the state of California to cause cancer through inhalation. Glasswool fibers may also cause respiratory, skin,
or eye irritation.
PRECAUTIONARY MEASURES
FIRST AID MEASURES
Eye Contact - Flush eyes with water to remove dust. If
• Avoid breathing fiberglass dust.
symptoms persist, seek medical atten-
tion.
• Use a NIOSH approved dust/mist respirator.
• Avoid contact with the skin or eyes. Wear long-sleeved,
Skin Contact - Wash affected areas gently with soap
loose fitting clothing, gloves, and eye protection.
and warm water after handling.
• Wash clothes separately from other clothing; rinse washer
thoroughly.
• Operations such as sawing, blowing, tear-out, and spray-
ing may generate fiber concentrations requiring additional
respiratory protection. Use the appropriate NIOSH ap-
proved respirator in these situations.
Page 4
Pub. No. 32-5022-10
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Maintenance information.
Never stop the cooling system by shutting off the main
power.
If the main power to your air conditioner is ever disconnected for
more than three hours, turn off the thermostat. Then wait for at
least three more hours after the power has been restored before
turning the thermostat back on. Failure to follow this procedure
could result in damage to your air conditioning system.
1. GENERAL INSPECTION - Examine the furnace installation
for the following items:
a. All flue product carrying areas external to the furnace (i.e.
chimney, vent connector) are clear and free of obstruction.
b. The vent connector is in place, slopes upward and is
physically sound without holes or excessive corrosion.
c. The return air duct connection(s) is physically sound, is
sealed to the furnace and terminates outside the space
containing the furnace.
d. The physical support of the furnace should be sound
without sagging, cracks, gaps, etc., around the base so as to
provide a seal between the support and the base.
NOTE: On LP (propane) units, due to variations in BTU content
and altitude, servicing may be required at shorter intervals.
e. There are no obvious signs of deterioration of the furnace.
5. HEAT EXCHANGER / FLUE PIPE - These items must be
inspected for signs of corrosion, and/or deterioration at the
beginning of each heating season by a qualified service techni-
cian and cleaned annually for best operation.
6. CIRCUIT PROTECTION - If blower or gas valve fail to
operate, the cause could be the circuit breaker or a loose or blown
fuse. Replace fuse or reset circuit breaker.
7. OPERATION - Your warm air furnace should not be operated
in a corrosive atmosphere. Paint solvents, cleaning chemicals,
spraypropellants, andbleachesshouldnotbeusedinthevicinity
of the furnace during normal operation.
2. BLOWERS - The blower size and speed determine the air
volume delivered by the furnace. The blower motor bearings are
factory lubricated and under normal operating conditions usu-
ally do not require servicing. Annual cleaning of the blower
wheel and housing is recommended for maximum air output,
andthismustbeperformedonlybyaqualifiedservicerorservice
agency.
8. COOLING COIL CONDENSATE DRAIN - If you have a
coolingcoilinstalledwithyourfurnace,condensatedrainsshould
be checked and cleaned periodically to assure that condensate
can drain freely from coil to drain. If condensate cannot drain
freely water damage could occur.
3. IGNITER - This unit has a special hot surface direct ignition
device that automatically lights the burners. Please note that it
is very fragile and should be handled with care.
9. AIR CIRCULATION - To ensure increased comfort, blower on
this unit may be operated continuously for both heating and
cooling. This will result in constantly filtered air and aid in
maintaining more even temperatures by avoiding temperature
stratification throughout the conditioned area. To accomplish
constant air circulation, set your thermostat fan switch to "ON".
CAUTION: Do not touch igniter. It is extremely hot.
4. BURNER - Gas burners do not normally require scheduled
servicing, however, accumulation of foreign material may cause
a yellowing flame or delayed ignition. Either condition indicates
that a service call is required. For best operation, burners must
be cleaned annually using brushes and vacuum cleaner.
Turn off gas and electric power supply. To clean burners, remove
top burner bracket and lift burner from orifice. NOTE: Be
careful not to break igniter when removing burners.
Clean burners with brush and/or vacuum cleaner. Reassemble
parts by reversal of the above procedure.
NOTE: On LP (propane) units, some light yellow tipping of the
outer mantle is normal. Inner mantle should be bright blue.
Natural gas units should not have any yellow tipped flames. This
condition indicates that a service call is required. For best opera-
tion,burnersmustbecleanedannuallyusingbrushesandvacuum
cleaner.
Pub. No. 32-5022-10
Page 5
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WARNING:
MANUAL MAIN
SHUTOFF VALVE
Unit is equipped with a blower door switch which cuts power to
blower and gas valve causing shutdown when door is removed.
Unit must not be altered to allow operation with the blower door
removed. Operation with doors removed or ajar can permit the
escape of dangerous fumes. All panels must be securely closed at
all times for safe operation of the furnace.
WARNING:
GROUND
UNION JOINT
Should overheating occur, or the gas supply fail to shut off, shut
off the manual gas valve to the furnace before shutting off the
electrical supply.
In the event that electrical, fuel or mechanical failures occur, the
owner should immediately turn off the gas supply at the manual
gas valve located in the burner compartment and electrical
power to the furnace and contact servicer.
DRIP LEG
AUTOMATIC GAS V
WITH MANUAL SHU
For your safety.
Furnace area must be kept clear and free of combustible mate-
rials, gasoline, and other flammable vapors and liquids.
Manual Main Gas Shut-off Valve May Be
Located on the Left or Right Side
Air for combustion and ventilation.
The flow of combustion and ventilating air must not be ob-
structed from reaching the furnace. Air openings provided in the
casing of furnace must be kept free of obstructions which would
restrict airflow, thereby affecting efficiency and safe operation of
your furnace.
MANUAL MAIN
SHUTOFF VALVE
Also, air openings provided to the area in which the furnace is
installed and the space around the furnace shall not be blocked
or obstructed. Keep this in mind should you choose to remodel
theareawhichcontainsyourfurnace.Furnacesmusthaveairfor
proper performance.
GROUND
UNION JOINT
If additional insulation is added after the furnace is installed,
the area around the furnace must be inspected to ensure it is free
and clear of insulation. If this furnace is installed in an attic or
other insulated space it must be kept free and clear of all
insulating materials as some insulating materials are combus-
tible.
DRIP LEG
MATIC GAS VALVE
MANUAL SHUTOFF
MANUAL MAIN
GROUND
SHUTOFF VALVE
UNION JOINT
MANUAL MAIN
SHUTOFF VALVE
AUTOMATIC GAS
VALVE WITH MANUAL
SHUTOFF
AUTOMATIC GAS
VALVE WITH MANUAL
SHUTOFF
GROUND
UNION JOINT
DRIP LEG
Manual Main Gas Shut-off Valve May Be Located on the Top or Bottom Side
Page 6
Pub. No. 32-5022-10
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MAIN
TOP VIEW OF LEFT SIDE PIPING
MANUAL
SHUTOFF
VALVE
GROUND
UNION
JOINT
DRIP
LEG
AUTOMATIC GAS VALVE
WITH SHUTOFF
AUTOMATIC GAS VALVE WITH SHUTOFF
DOWNFLOW FURNACE Manual Main Gas Shut-off Valve May Be Located on the Right or Left Side
NOTE THE LOCATION OF THE MANUAL MAIN GAS SHUTOFF VALVE FOR YOUR FURNACE.
Have your installer or servicer show you the location if you have any questions.
To light furnace.
Lighting instructions.
will open and burners will ignite.
Your furnace is equipped with a hot surface direct ignition
device.
8. When thermostat is satisfied, main burners will extinguish.
9. If main burners fail to ignite, lower thermostat setting or
disconnect electrical supply, wait 5 minutes, raise thermostat
setting above indicated temperature.
WARNING.
Do not attempt to manually light the furnace.
1. Pleasereadallsafetyinformationinthisbookbeforeoperating
furnace.
10. If furnace will not light, turn “OFF” all gas and electricity to
unit and call servicer or gas supplier.
2. Set thermostat to lowest setting. Turn off all electric power to
furnace.
For complete shutdown.
Turn gas cock knob on main gas valve to “OFF” position. Discon-
nect electrical supply to unit.
3. Remove control access panel.
4. Turn gas cock knob on main gas valve with unit clockwise to
“OFF” position. If external gas cock is used, turn to “OFF”
position. Allow 5 minutes for any gas within the unit to escape.
LP gas being heavier than air may require forced ventilation. If
you smell gas STOP! Follow the “What To Do If You Smell Gas”
instructions on the front cover of this book. If you don’t smell gas,
go to next step.
CAUTION: If this is done during the cold weather months,
provisions must be taken to prevent freeze-up of all water pipes
and water receptacles.
Whenever your house is to be vacant, arrange to have someone
inspect your house for proper temperature. If your furnace
should fail to operate, damage could result, such as frozen water
pipes.
5. Turn gas cock knob counterclockwise to “ON” marker.
6. Replace control access panel.
Flame Roll-out Device.
All models are equipped with a fusible link located near the
burners. In case of flame roll-out, the link will open (melt) and
cause the circuit to open which shuts off all flow of gas.
7. Turn on main electrical supply and set thermostat to desired
setting. Combustion blower will start and ignition device will
start to heat up. After approximately 15 seconds main gas valve
Your Gas Valve Shutoff May Be
MANUAL OR ELECTRIC SWITCH
Switch Toggles
"ON" or "OFF"
Pub. No. 32-5022-10
Page 7
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Limited Warranty
High Efficiency Condensing Gas Furnace
UC, DC, UX, DX, UY and DY
(First letter may be preceded by an “A” or “T”)
Models Less Than 20 Tons for Residential Use*
(Parts Only)
This limited warranty is extended by American Standard Inc., to the original purchaser of the specified models for his or her lifetime
under the conditions set forth below or to any succeeding owner for a period of twenty (20) years from the date of installation for the
original owner. This limited warranty applies to products purchased and retained for use within the U.S.A. and Canada.
Limited Warranty
If any part of your furnace fails because of a manufacturing defect within five (5) years from the date of original purchase, Warrantor
will furnish without charge the required replacement part F.O.B. nearest Parts Distribution point. Any local transportation, related
service labor, air filters, and diagnosis calls, are not included.
Limited Lifetime Warranty
The primary and/or secondary heat exchanger when installed to serve a single family residence or single condominium is warranted
to the original purchaser for use during his or her lifetime, provided the dwelling is the original purchaser’s primary, uninterrupted
residence from the date of purchase until discovery or notice of a defect in the primary heat exchanger or secondary heat ex-
changer. The heat exchanger is warranted to a successor purchaser for a period of twenty (20) years from the date of original
installation of the furnace, subject to proof of original purchase. Warrantor WILL AT ITS OPTION provide either a heat exchanger
including secondary heat exchanger without charge F.O.B. nearest Parts Distribution point, or allow a credit in the amount of the
then current wholesale price of an equivalent heat exchanger toward the purchase price of a comparable heating unit. Any local
transportation, related service labor, air filters, and diagnosis calls, are not included.
This limited warranty does not cover failure of your gas furnace if it is damaged while in your possession, failure attributable or
caused by unreasonable use of the gas furnace and/or failure to properly maintain the gas furnace as set forth in the Use and Care
manual. This limited warranty applies to product installed on or after 10/1/2001 where product is manufactured after
1/1/2000. This limited warranty is not retroactive to any installations prior to 10/1/2001 or on product produced prior to 2000.
THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES AND LIABILI-
TIES, WHETHER IN CONTRACT OR IN NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN FACT, INCLUDING IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR USE, AND IN NO EVENT SHALL WARRANTOR BE
LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow limitations on how long an implied limited warranty lasts or do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not apply to you. This limited warranty gives you
specific legal rights, and you may also have other rights which vary from state to state. Parts will be provided by our factory organi-
zation through an authorized service organization in your area listed in the yellow pages. If you wish further help or information
concerning this limited warranty, contact:
American Standard Inc.
Troup Highway
Tyler, TX 75711-9010
Attention: Manager, After Sales Support
GW-614-4001
* This limited warranty is for residential usage of this equipment and not applicable when this equipment is used for a commercial
application. A commercial use is any application where the end purchaser uses the product for other than personal, family or
household purposes.
Extended warranties are available from the manufacturer through your dealer. The limited warranty is backed by the
manufacturer and any representations made about extending the limited warranty would be backed by the manufacturer if and
only if an extended warranty agreement was received from the manufacturer.
Library
Product Section
Product
Model
Literature Type
Sequence
Date
File No.
Supersedes
As an ENERGY STAR Partner, American Standard Inc., has determined that this product meets
the ENERGY STAR guidelines for energy efficiency.
American Standard Inc.
10/2001
6200 Troup Highway
Page 8
Pub. No. 32-5022-10
Tyler, TX 75711-9010
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