American Standard Condensing Gas Furnaces Fan Assisted Combustion System User's Manual
Contents
1. wide furnace cabinets a 20 x 25 x 1 filter in the 21 wide models and a 24 x 25 x 1 filter in the 24 1 2 wide cabinet Page 2 FILTER BLOWER RETAINE ACCESS Ey DOOR UPFLOW BOTTOM RETURN For vertical UPFLOW ONLY a left or right return air inlet as above left side shown requires trimming of the factory supplied filter to 17 x 25 x 1 for both the 21 and 24 1 2 wide furnaces FILTER RETAINER BLOWER ACCESS DOOR UPFLOW SIDE RETURN Air filters may also be located outside of the furnace using a SIDE FILTER FRAME FILTER ACCESS UPFLOW ONLY Pub No 32 5022 10 Upflow Horizontal Furnace 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 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 UPFLOW HORIZONTAL WITH FILTER KIT To replace filters remove the filter access door lift the filter from 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 b2. are believed by the State of California to cause cancer birth defects or other reproductive harm 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 and this must be performed only by a qualified servicer or service agency 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 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
3. cannot be responsible for the interpretation of this information nor can it assume any liability in connection with its use Understand the signal words DANGER WARNING AND CAUTION These words are safety alert words 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 American Standard Inc 2001 CAUTION is used to indicate unsafe practices which could result in minor injury or property damage 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 The combustion air for your furnace must be fresh uncon taminated air Paints varnishes laundry bleaches 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 Never store gasoline combustible materials or other 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 Parts and controls of this
4. 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 co
5. furnace are unique Should service or modification be required be sure your servicer uses only factory authorized parts kits or accessories for this furnace CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous op eration AWARN NG 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 AWARNING po not use THIS UNIT 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 Pub No 32 5022 10 Filter maintenance reduces energy use A clean filter saves money When the furnace circulates and filters the air in your home dust and dirt particles build up on the filter Excessive accumulation can block the airflow forcing the unit to work harder to maintain desired temperatures And the harder your unit has to work the more energy it uses So you pay more any time your system is running with a dirty filter CAUTION Never operate your unit for either heati
6. 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 T Product Model Literature Type 7 A Sequence eee Ea Date File No As an ENERGY STAR Partner American Standard Inc has determined that this product meets Supersedes the ENERGY STAR guidelines for energy efficiency American Standard Inc 10 2001 Page 8 po LOUR Honey Pub No 32 5022 10 Tyler TX 75711 9010
7. must be kept free of obstructions which would SHUTOFF VALVE restrict airflow thereby affecting efficiency and safe operation of your furnace 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 ____ GROUND the area which contains your furnace Furnaces must have air for UNION JOINT proper performance i 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 AUTOMATIC GAS VALVE WITH MANUAL SHUTOFF MANUAL MAIN GROUND SHUTOFF VALVE UNION JOINT erat kia m _ DRIP BH LEG i MANUAL MAIN SHUTOFF VALV ett il La Ge gt AUTOMATIC GAS AUTOMATIC GAS p a GROUND DRIP LEG UNION JOINT VALVE WITH MANUAL wa MANUAL SHUTOFF Manual Main Gas Shut off Valve May Be Located on the Top or Bottom Side Page 6 Pub No 32 5022 10 MAIN MANUAL SHUTOFF VALVE A Tko N GROUND UNION JOINT N DRIP LEG AUTOMATIC GAS VALVE WITH SHUTOFF TOP VIEW OF LEFT SIDE PIPING AUTOMATIC GAS VALVE WITH SHUTOFF DOWNFLOW FURNACE Manual Main Gas Shut off Valve May Be Located
8. 0 X 1 X X 24 1 2 2 16 X 20 X 1 Page 3 The problem solver A furnace is not a household appliance It is complex and requires professional maintenance and repair That s why attempts at do it yourself repairs on an in war ranty unit may void the remainder of your warranty 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 of your furnace should be made by a qualified service agency at the start of each heating season 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 Save time and money Before calling for service check the following Possible Trouble Possible Remed No Heating Blower 1 Does not operate Thermostat set incorrectly 2 Defective component Burner does not ignite Main gas line turned off Blower door removed or ajar Lockout Insufficient Heating Blower operates continuously Dirty air filters Blocked supply or return registers No Heat Vent motor is running Restricted or plugged furnace condensate drain Blown fuse or tripped circuit breaker Adjust thermostat See operatin
9. User s Information Guide Condensing Gas Furnaces Fan Assisted Combustion System Upflow Horizontal and Downflow Horizontal WARNING _ Iftheinformation in this manualis not followed exactly a fire or explosion may result causing property damage 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 electrical switch do not use any phone in your build ing 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 Installation and service must be per formed by a qualified installer service agency or the gas supplier 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 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
10. emove dust If symptoms persist seek medical atten tion Skin Contact Wash affected areas gently with soap and warm water after handling Pub No 32 5022 10 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 e There are no obvious signs of deterioration of the furnace The following warning complies with State of California law Proposition 65 AWA R N N G Hazardous Gases Exposure to fuel substances or by products of Incomplete fuel combustion
11. g instructions Replace or reset protective device or call for servicer Most controls are automatic and will recycle If your unit still does not operate call for servicer Call servicer Have gas company check Close door securely to restore power to blower and gas valve Turn power on off on off twice in 30 secs Clean or replace filters Make sure registers are open and No obstacles blocking off the air Remove drain clamps to condensate trap and drain pan outlet Flush or clear drain blockage 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 Avoid breathing fiberglass dust Use a NIOSH approved dust mist respirator Avoid contact with the skin or eyes Wear long sleeved loose fitting clothing gloves and eye protection 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 FIRST AID MEASURES Eye Contact Flush eyes with water to r
12. ining more even temperatures by avoiding temperature stratification throughout the conditioned area To accomplish constant air circulation set your thermostat fan switch to ON Page 5 WARNING 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 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 MANUAL MAIN SHUTOFF VALVE T GROUND UNION JOINT 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 AUTOMATIC GAS VALVE For your safety WITH MANUAL SHUTOFF 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 Air for combustion and ventilation Located on the Left or Right Side The flow of combustion and ventilating air must not be ob structed from reaching the furnace Air openings provided in the MANUAL MAIN casing of furnace
13. mostat setting above indicated temperature 10 If furnace will not light turn OFF all gas and electricity to unit and call servicer or gas supplier For complete shutdown Turn gas cock knob on main gas valve to OFF position Discon nect electrical supply to unit 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 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 Your Gas Valve Shutoff May Be ON Or OFF Position Markers 1 Gas Cock Knob Turns of A 72 T N A G50 Position Markers Are Stationary Pub No 32 5022 10 MANUAL OR ELECTRIC SWITCH Switch Toggles ON or OFF Page 7 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
14. mparable 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
15. ng or cooling with filters removed Help ensure top efficiency by cleaning the filter once a month Clean it twice a month during seasons when the unit runs more often You can clean the filter with a vacuum OR you can wash it with a household detergent Both methods are quick and easy and guaranteed to improve the performance of your system Your filter may or may not be framed Replacing your filter When replacing your furnace filters always use high velocity type which are the same size as originally supplied Filters are available from your dealer Where disposable filters are used they must be a high velocity type which are the same size as originally supplied How to remove your filter WARNING Disconnect power to unit before removing blower door Upflow furnaces use a high velocity type air filter which may be located within the furnace blower compartment in either a BOTTOM or SIDE left or right return air inlet The furnace may be secured with filter retaining brackets as shown or a filter retainer wire To replace filters remove blower access door push back to flex the filter and clear the filter retaining bracket at the front of the unit After cleaning replace the filter in the same manner making sure that the filter wire is secured in place in both front and back filter retaining brackets Replace blower access door A bottom return air inlet as shown features a 17 x 25 x 1 filter in the 17 1 2
16. 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 Your furnace is equipped with a hot surface direct ignition device WARNING Do not attempt to manually light the furnace 1 Please read all safety information in this book before operating furnace 2 Set thermostat to lowest setting Turn off all electric power to furnace 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 5 Turn gas cock knob counterclockwise to ON marker 6 Replace control access panel 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 will open and burners will ignite 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 ther
17. ottom 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 TAP KBE XT 1 20 X 25 X 1 1 24 X 25 X 1 REQUIRED FILTERS SIDE 17 1 2 1 17 X 25 X 1 21 1 20 X 25 X 1 24 1 2 1 24 X25 X j 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 Downflow Horizontal furnaces are factory supplied with 2 stan dard size permanent type air filters which may be located remote to the furnace or in the return air duct 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 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 REQUIRED FILTERS DOWNFLOW 17 1 2 2 16 X 20 X 1 21 2 16 X 2
18. tipped flames This condition indicates that a service call is required For best opera tion burners must be cleaned annually using brushes and vacuum cleaner Pub No 32 5022 10 BURNER BRACKET MANIFOLD MAIN BURNER ORIFICE Typical NOTE On LP propane units due to variations in BTU content and altitude servicing may be required at shorter intervals 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 spray propellants and bleaches should not be used in the vicinity of the furnace during normal operation 8 COOLING COIL CONDENSATE DRAIN If you have a cooling coil installed with your furnace condensate drains should 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 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 mainta
Download Pdf Manuals
Related Search