X341119P10 Gas Furnace Var. Speed Blower Var. Speed Inducer Two Stage Heat Direct Vent Models:

Service Facts X349P0 Gas Furnace Var. Speed Blower Var. Speed Inducer Two Stage Heat Direct Vent Models: *UY060R9V3W *UY080R9V3W *UY00R9V4W *UY20R9V5W * First letter may be A or T *DY060R9V3W *DY080R9V3W *DY00R9V4W *DY20R9V5W B FURNACES IMPORTANT This document contains a wiring diagram and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work. DISCONNECT POWER BEFORE SERVICING MODEL TYPE RATINGS 2 st Stage Input BTUH st Stage Capacity BTUH (ICS) 3 2nd Stage Input BTUH 2nd Stage Capacity BTUH (ICS) 3 Temp. rise (Min.Max.) F. BER DRIVE Diameter Width (In.) No. Used Speeds (No.) vs. in. w.g. Motor HP R.P.M. Volts / Ph / Hz COMBUSTION FAN Type Drive No. Speeds Motor HP RPM Volts / Ph / Hz FLA FILTER Furnished? Type Recommended Hi Vel. (No.SizeThk.) VENT Size (in.) HEAT EXCHANGER Type Fired Unfired Gauge (Fired) ORIFICES Main Nat. Gas. Qty. Drill Size L.P. Gas Qty. Drill Size GAS VALVE PILOT SAFETY DEVICE Type BURNERS Type Number POWER CONN. V / Ph / Hz 4 Ampacity (In Amps) Max. Overcurrent Protection (Amps) PIPE CONN. SIZE (IN.) DIMENSIONS Crated (In.) WEIGHT Shipping (Lbs.) / Net (Lbs) *UY060R9V3W Upflow / Horizontal 39,000 37,000 60,000,000 35 65 DIRECT 0 x 8 See Fan Performance Table /2 Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 7x25 in. 2 Round Aluminized Steel Type I 20 3 45 3 Redundant Two Stage Hot Surface Igniter Multiport Inshot 3. 5 /2 H x W x D 43/4 x 9/2 x 30/2 / 46 PRODUCT SPECIFICATIONS *UY080R9V3W Upflow / Horizontal 52,000,000 80,000 73,000 35 65 DIRECT 0 x 8 See Fan Performance Table /2 Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 7x25 in. 2 Round Aluminized Steel Type I 20 4 45 4 Redundant Two Stage Hot Surface Igniter Multiport Inshot 4. 5 /2 H x W x D 43/4 x 9/2 x 30/2 68 / *UY00R9V4W Upflow / Horizontal 65,000 60,000 00,000 93,000 35 65 DIRECT 0 x 0 See Fan Performance Table Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 20x25 in. 3 Round Aluminized Steel Type I 20 5 45 5 Redundant Two Stage Hot Surface Igniter Multiport Inshot 5 3.5 20 /2 H x W x D 43/4 x 23 x 30/2 97 / 85 Central Furnace heating designs are certified by AGA and CSA. 2 For U.S. applications, above input ratings (BTUH) are up to 2,000 feet, derate 4% per,000 feet for elevations above 2,000 feet above sea level. For Canadian applications, above input ratings (BTUH) are up to 4,0 feet, derate 4% per,000 feet for elevations above 4,0 feet above sea level. 3 Based on U.S. government standard tests. 4 The above wiring specifications are in accordance with National Electrical Code; however, installations must comply with local codes. *UY20R9V5W Upflow / Horizontal 78,000 72,000 20,000 2,000 40 70 DIRECT 0 x 0 See Fan Performance Table Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 24x25 in. 3 Round Aluminized Steel Type I 20 6 45 6 Redundant Two Stage Hot Surface Igniter Multiport Inshot 6 7.5 30 /2 H x W x D 43/4 x 26/2 x 30/2 206 / 93 NOTICE: Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice. 2004 American Standard Inc. All Rights Reserved Page B6435 W.M. 7/04

Service Facts MODEL TYPE RATINGS 2 st Stage Input BTUH st Stage Capacity BTUH (ICS) 3 2nd Stage Input BTUH 2nd Stage Capacity BTUH (ICS) 3 Temp. rise (Min.Max.) F. BER DRIVE Diameter Width (In.) No. Used Speeds (No.) vs. in. w.g. Motor HP R.P.M. Volts / Ph / Hz COMBUSTION FAN Type Drive No. Speeds Motor HP RPM Volts / Ph / Hz FLA FILTER Furnished? Type Recommended Hi Vel. (No.SizeThk.) VENT Size (in.) HEAT EXCHANGER Type Fired Unfired Gauge (Fired) ORIFICES Main Nat. Gas. Qty. Drill Size L.P. Gas Qty. Drill Size GAS VALVE PILOT SAFETY DEVICE Type BURNERS Type Number POWER CONN. V / Ph / Hz 4 Ampacity (In Amps) Max. Overcurrent Protection (Amps) PIPE CONN. SIZE (IN.) DIMENSIONS Crated (In.) WEIGHT Shipping (Lbs.) / Net (Lbs) *DY060R9V3W Downflow / Horizontal 39,000 36,000 60,000,000 35 65 DIRECT 0 x 8 See Fan Performance Table /2 Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 2 4x20 in. 2 Round Aluminized Steel Type I 20 3 45 3 Redundant Two Stage Hot Surface Igniter Multiport Inshot 3. 5 /2 H x W x D 43/4 x 9/2 x 30/2 60/ 46 PRODUCT SPECIFICATIONS *DY080R9V3W Downflow / Horizontal 52,000,000 80,000 74,000 35 65 DIRECT 0 x 8 See Fan Performance Table /2 Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 2 4x20 in. 2 Round Aluminized Steel Type I 20 4 45 4 Redundant Two Stage Hot Surface Igniter Multiport Inshot 4. 5 /2 H x W x D 43/4 x 9/2 x 30/2 68 / *DY00R9V4W Downflow / Horizontal 65,000 60,000 00,000 94,000 35 65 DIRECT 0 x 0 See Fan Performance Table 3/4 Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 2 6x20 in. 3 Round Aluminized Steel Type I 20 5 45 5 Redundant Two Stage Hot Surface Igniter Multiport Inshot 5 3.5 20 /2 H x W x D 43/4 x 23 x 30/2 85 / 75 Central Furnace heating designs are certified by AGA and CSA. 2 For U.S. applications, above input ratings (BTUH) are up to 2,000 feet, derate 4% per,000 feet for elevations above 2,000 feet above sea level. For Canadian applications, above input ratings (BTUH) are up to 4,0 feet, derate 4% per,000 feet for elevations above 4,0 feet above sea level. 3 Based on U.S. government standard tests. 4 The above wiring specifications are in accordance with National Electrical Code; however, installations must comply with local codes. *DY20R9V5W Downflow / Horizontal 78,000 72,000 20,000 2,000 40 70 DIRECT 0 x 0 See Fan Performance Table Centrifugal Direct / 00 33 0/3/60 80.0 Yes High Velocity 2 6x20 in. 3 Round Aluminized Steel Type I 20 6 45 6 Redundant Two Stage Hot Surface Igniter Multiport Inshot 6 7.5 30 /2 H x W x D 43/4 x 26/2 x 30/2 206 / 96 2 Page B6435

SAFETY SECTION Service Facts CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death. The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:. Seal any unused openings in the venting system. 2. Inspect the venting system for proper size and horizontal pitch, as required in the National Fuel Gas Code, ANSI Z223./NFPA or the CAN/CGA B Installation Codes and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition. 3. As far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected to the venting system are located and other deficiencies which could cause an unsafe condition. 4. Close fireplace dampers. 5. Turn on clothes dryers and any appliance not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they are operating at maximum speed. Do not operate a summer exhaust fan. 6. Follow the lighting instructions. Place the appliance being inspected into operation. Adjust the thermostat so appliance is operating continuously. 7. If improper venting is observed during any of the above tests, the venting system must be corrected in accordance with the National Fuel Gas Code, ANSI Z22./NFPA and/or CAN/CGA B Installation Codes. 8. After it has been determined that each appliance connected to the venting system properly vents where tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas fired burning appliance to their previous conditions of use. CARBON MONOXIDE POISONING HAZARD Failure to follow the installation instructions for the venting system being placed into operation could result in carbon monoxide poisoning or death. FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections. A fire or explosion may result causing property damage, personal injury, or loss of life. FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Improper servicing could result in dangerous operation, serious injury, death, or property damage. BODILY INJURY CAN RESULT FROM 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 TECHNICIAN S RESPONSIBILITY TO RECOGNIZE THESE HAZARDS AND PROCEED SAFELY. CAUTION The integrated furnace control is polarity sensitive. The hot leg of the 5 VAC power must be connected to the BLACK field lead. The cabinet must have an uninterrupted or unbroken ground according to National Electrical Code, ANSI/ NFPA 70 latest edition and Canadian Electrical Code, CSA C22. or local codes to minimize personal injury if an electrical fault should occur. A failure to follow this warning could result in an electrical shock, fire, injury, or death. Page B6435 3

Service Facts SEQUENCE OF OPERATION Thermostat call for heat (2stage thermostat) Call for st stage only: W thermostat contacts close signaling the control module to run its selfcheck routine. After the control module has verified that the st stage pressure switch contacts are open and the limit switch(es) contacts are closed, the draft blower will be energized. As the induced draft blower comes up to speed, the pressure switch contacts will close and the ignitor warmup period will begin. The ignitor will heat for approx. 20 seconds, then the gas valve is energized in st stage to permit gas flow to the burners. The flame sensor confirms that ignition has been achieved within the 4 second ignition trial period. As the flame sensor confirms that ignition has been achieved, the delay to fan ON period begins timing and after approx. 45 seconds the indoor blower motor will be energized at low speed and will continue to run during the heating cycle. Call for 2nd stage after st stage: W2 thermostat contacts close signaling a call for 2nd stage heat. After a 30 second delay, the induced draft blower will be energized on high speed and the 2nd stage pressure switch contacts will close. The gas valve is energized in 2nd stage and the indoor blower motor in high speed. 2nd stage satisfied, st stage still called: W2 thermostat contacts open signaling that 2nd stage heating requirements are satisfied. The induced draft blower is reduced to low speed allowing the 2nd stage pressure switch contacts to open and the gas valve is reduced to st stage. The indoor blower motor is reduced to low speed. st stage satisfied: W thermostat contacts open signaling that st stage heating requirements are satisfied. The gas valve will close and the induced draft blower will be deenergized. The indoor blower motor will continue to run for the fan off period (Field selectable at 60, 00, 40 or 80 seconds), then will be deenergized by the control module. Thermostat call for heat (stage thermostat) W/W2 (jumpered) thermostat contacts close signaling a call for heat. st stage sequence of operation remains the same as above. 2nd stage heat will energize after the stage delay timer (field selectable at.5, 5, 0 or 5 minutes) has expired. Thermostat satisfied: W/W2 (jumpered) contacts open signaling the control module to close the gas valve. The induced draft blower is switched to low speed and deenergized after the post purge timer has expired. The indoor blower motor will continue to operate after the flames are extinguished and then is switched to low heat speed for the FANOFF period. Should overheating occur, or the gas supply fail to shut off, shut off the gas valve to the unit before shutting off the electrical supply. Failure to follow this warning could result in property damage, personal injury, or death. Indoor blower operation with thermostat fan switch ON : Fan is RG. RW energized, fan continues to run without interruption. Heat Low speed if it is a two stage furnace. Heat speed if it is a single stage furnace. INDOOR BER TIMING Heating: The integrated furnace control module controls the indoor blower. The blower start is fixed at 45 seconds after ignition. The FANOFF period is field selectable by dip switches SW2, # and #2 at 60, 00, 40, or 80 seconds. The factory setting is 00 seconds. WW2 stage delay (jumpered together) is field selectable by dip switch SW, # and #2 at.5, 5, 0 or 5 minutes. The factory setting is 0 minutes. (See wiring diagram). Cooling: The fan delayoff period is set by dip switches on the Integrated Furnace Control. The options for cooling delay off is field selectable by dip switches #5 and #6. The following table and graph explain the delayoff settings: COOLING OFF DELAY OPTIONS SWITCH SETTINGS SELECTION NOMINAL AIRF 5 OFF 6 OFF NONE SAME 5 ON 6 OFF.5 MINUTES 00% * 5 OFF 6 ON 3 MINUTES % 5 ON 6 ON ** 00% * This setting is equivalent to BAY24X045 relay benefit ** This selection provides ENHANCED MODE, which is a ramping up and ramping down of the blower speed to provide improved comfort, quietness, and potential energy savings. See Wiring Diagram notes on the unit or in the Service Facts for complete wiring setup for ENHANCED MODE. The graph which follows, shows the ramping process. OFF % 80% minute Dehumidify Fast Coil Cooling 7.5 minutes 00% if necessary Efficiency 3 minutes % OFF BODILY INJURY CAN RESULT FROM 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 PER FORMED WITH THE UNIT OPERATING, IT IS THE TECHNICIAN S RESPONSIBILITY TO RECOGNIZE THESE HAZARDS AND PROCEED SAFELY. CAUTION The integrated furnace control is polarity sensitive. The hot leg of the 5 VAC power must be connected to the BLACK field lead. 4 Page B6435

Disconnect power to the unit before removing the blower door. Allow a minimum of 0 seconds for IFC power supply to drain to 0 volts. Failure to follow this warning could result in property damage, personal injury or death. CARBON MONOXIDE POISONING HAZARD Failure to follow the service and/or periodic maintenance instructions for the furnace and venting system, could result in carbon monoxide poisoning or death.. GENERAL INSPECTION Examine the furnace installation annually 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. A vent screen in the end of the vent (flue) pipe must be inspected for blockage annually. 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. 2. FILTERS Filters should be cleaned or replaced (with high velocity filters only), monthly and more frequently during high use times of the year such as midsummer or midwinter. 3. BERS 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 do not require servicing. If motor lubrication is required it should only be done by a qualified servicer. 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. 4. 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. 5. 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 burner box cover (6 to 8 screws) and top burner bracket. Lift burners from orifices. 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. The burner box must be resealed when replacing box cover. PERIODIC SERVICING REQUIREMENTS Service Facts 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 operation, burners must be cleaned annually using brushes and vacuum cleaner. NOTE: On LP (propane) units, due to variations in BTU content and altitude, servicing may be required at shorter intervals. Page B6435 5 CARBON MONOXIDE POISONING HAZARD Failure to follow the service and/or periodic maintenance instructions for the furnace and venting system, could result in carbon monoxide poisoning or death. 6. 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 technician and cleaned annually for best operation. To clean flue gas passages, follow recommendations below: a. Turn off gas and electric power supply. b. Inspect flue pipe exterior for cracks, leaks, holes or leaky joints. Some discoloration of PVC pipe is normal. c. Remove burner compartment door from furnace. d. Inspect around insulation covering flue collector box. Inspect induced draft blower connections from recuperative cell and to the flue pipe connection. e. Remove burners. (See 4.) f. Use a mirror and flashlight to inspect interior of heat exchanger, be careful not to damage the igniter, flame sensor or other components. g. If any corrosion is present, contact a service agency. Heat exchanger should be cleaned by a qualified service technician. h. After inspection is complete replace burner box cover, burners, and furnace door. i. Restore gas supply. Check for leaks using a soap solution. Restore electrical supply. Check unit for normal operation. 7. COOLING COIL CONDENSATE DRAIN If a cooling coil is installed with the 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. (See Condensate Drain in Installer s Guide.) CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. NEVER USE AN OPEN FLAME TO TEST FOR GAS LEAKS: AN EXPLOSION COULD OCCUR, CAUSING INJURY OR DEATH.

Service Facts *UY WIRING DIAGRAM From Drawing No. D3428P0 Rev 6 Page B6435

*UY SCHEMATIC DIAGRAM Service Facts From Drawing No. D3428P0 Rev Page B6435 7

Service Facts *DY WIRING DIAGRAM From Drawing No. D3429P0 Rev 2 8 Page B6435

*DY SCHEMATIC DIAGRAM Service Facts From Drawing No. D3429P0 Rev 2 Page B6435 9

Service Facts ST 2ND *UY060R9V3W FURNACE AIRF () AND POWER () VS. WITH FILTER st Stage Capacity = 37,000 2nd Stage Capacity =,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 NOTES: * First letter may be "A" or "T" ** Factory setting ON ON MEDIUM OFF ON ** ON OFF OFF OFF ON ON MEDIUM OFF ON ** ON OFF OFF OFF 85 90 775 05 870 39 35 860 6 40 90 25 47 2 2 42 0 30 775 55 870 39 85 920 200 255 25 47 35 2 42 405 55 75 775 95 870 39 235 920 245 305 25 47 370 2 42 5 90 20 775 240 870 39 290 920 300 025 5 355 00 670 79 245 75 255 775 68 285 355 *UY060R9V3W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS).5 2.0 2.5 3 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 ON ON OFF ON ON ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 5 65 640 70 85 00 5 40 30 75 25 235 0 95 275 325 360 5 90 640 0 25 30 55 95 80 235 25 0 260 330 325 425 5 25 640 40 60 70 200 240 230 285 25 345 0 305 385 300 460 5 55 630 75 200 20 2 290 335 00 370 0 3 00 385 75 425 925 38 920 35 940 330 365 0 Page B6435

ST 2ND Service Facts *UY080R9V3W FURNACE AIRF () AND POWER () VS. WITH FILTER st Stage Capacity =,000 2nd Stage Capacity = 73,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 NOTES: * First letter may be "A" or "T" ** Factory setting ON ON MEDIUM OFF ON ** ON OFF OFF OFF ON ON MEDIUM OFF ON ** ON OFF OFF OFF 05 860 52 5 960 46 080 4 95 00 62 205 20 265 360 365 360 355 40 880 5 65 990 45 200 0 40 255 00 62 260 240 55 5 4 80 890 25 230 20 40 35 20 6 320 260 40 0 520 220 920 265 020 20 40 365 20 6 370 260 470 360 5 3 5 5 265 90 320 00 3 080 4 090 63 400 30 6 430 20 475 80 465 *UY080R9V3W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS) 2.0 2.5 3.0 3.5 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 ON ON OFF ON ON ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 7 84 840 09 940 36 8 3 960 080 95 020 75 70 240 290 70 2 360 365 360 355 7 22 840 46 940 77 8 990 200 0 255 020 225 80 300 320 40 90 35 5 4 7 840 8 940 25 870 200 230 20 35 040 280 365 3 470 20 370 0 520 720 85 840 226 940 274 890 2 020 305 20 365 0 330 45 520 20 435 360 5 3 5 70 22 820 264 940 38 890 00 3 080 0 375 30 420 0 00 405 20 475 80 460 Page B6435

Service Facts ST 2ND *UY00R9V4W FURNACE AIRF () AND POWER () VS. WITH FILTER st Stage Capacity = 62,000 2nd Stage Capacity = 93,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 NOTES: * First letter may be "A" or "T" ** Factory setting ON ON MEDIUM OFF ON MEDIUM ** ON OFF OFF OFF ON ON MEDIUM OFF ON MEDIUM ** ON OFF OFF OFF 873 64 00 97 5 36 60 2 225 260 68 23 464 59 35 63 4 846 47 640 893 63 45 997 70 46 230 298 43 300 304 66 305 47 59 405 678 5 0 867 46 760 62 95 006 220 65 39 42 329 65 478 5 690 5 670 794 770 899 62 240 022 55 280 80 47 365 328 42 4 334 65 460 478 0 9 55 645 6 52 902 62 290 029 335 84 47 425 286 0 37 65 50 3 64 0 49 6 5 8 6 *UY00R9V4W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS) 2.5 3.0 3.5 4.0 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 ON ON OFF ON ON ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF NOTES: *First letter may be "A" or "T". At Continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 808 75 938 00 0 004 20 4 70 336 2 80 285 5 400 388 290 60 45 847 630 824 25 963 60 00 200 00 75 90 245 375 330 206 2 48 465 606 5 423 360 64 55 863 735 840 70 959 205 2 265 027 230 24 387 40 230 320 439 5 632 590 4 0 666 635 86 780 835 20 964 255 36 330 0 285 229 388 0 239 395 55 596 645 4 55 607 6 687 720 830 2 975 42 395 0 345 234 4 384 5 2 460 373 0 5 590 0 4 595 2 665 2 Page B6435

ST 2ND Service Facts *UY20R9V5W FURNACE AIRF () AND POWER () VS. WITH FILTER st Stage Capacity = 74,000 2nd Stage Capacity = 2,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 NOTES: * First letter may be "A" or "T" ** Factory setting ON ON MEDIUM OFF ON ** ON OFF OFF OFF ON ON MEDIUM OFF ON ** ON OFF OFF OFF 090 62 65 20 220 430 47 660 63 5 870 2060 5 880 2200 030 20 60 225 280 360 3 0 43 0 690 62 590 870 745 990 890 2090 965 080 63 330 370 425 0 43 5 680 62 640 80 770 8 80 940 895 070 63 80 395 5 0 43 625 640 64 680 62 75 70 6 7 790 830 00 67 60 455 330 5 5 5 460 72 0 70 625 0 68 665 640 64 7 *UY20R9V5W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS) 3.5 4.0 5 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 20 220 305 590 425 305 620 420 840 0 20 845 260 995 20 0 520 375 6 0 830 690 780 630 200 2040 935 220 325 4 465 60 430 5 670 595 820 765 780 705 860 805 920 230 400 4 50 645 0 55 640 660 670 695 70 735 780 805 230 5 40 0 5 420 5 0 0 620 0 65 0 655 620 730 Page B6435 3

Service Facts ST 2ND *DY060R9V3W FURNACE AIRF () AND POWER () VS. WITH FILTER st CAPACITY = 37,000 2nd CAPACITY =,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 NOTES: * First letter may be "A" or "T" ** Factory setting ON ON MEDIUM OFF ON ** ON OFF OFF OFF ON ON MEDIUM OFF ON ** ON OFF OFF OFF 55 65 7 45 85 8 40 5 25 52 70 2060 5 880 2200 030 85 05 7 45 25 8 40 55 65 0 230 990 890 2090 965 20 40 7 45 60 8 40 205 220 0 8 80 940 895 75 7 45 20 8 40 260 0 335 70 6 7 790 830 85 205 7 45 260 8 40 320 35 0 370 0 68 665 640 64 7 *DY060R9V3W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS).5 2.0 2.5 3 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF ON ON OFF ON ON ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 525 45 55 65 70 00 25 5 25 25 0 75 240 3 330 525 70 85 05 5 35 65 60 207 25 285 0 240 35 3 40 525 00 20 625 40 45 75 220 20 265 25 0 305 385 3 0 525 35 75 85 225 260 320 25 395 0 345 0 275 5 525 60 85 205 220 280 330 25 0 0 00 40 70 4 4 Page B6435

ST 2ND Service Facts *DY080R9V3W FURNACE AIRF () AND POWER () VS. WITH FILTER st CAPACITY =,000 2nd CAPACITY = 73,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 ON ON MEDIUM OFF ON ** ON OFF OFF OFF ON ON MEDIUM OFF ON ** ON OFF OFF OFF NOTES: * First letter may be "A" or "T" ** Factory setting *** Above MAX Temperature change value 30 62 205 70 38 305 60 285 275 430 55 430 55 70 20 265 70 38 3 60 345 275 5 5 0 5 0 20 260 70 38 400 60 385 425 220 455 220 455 790 245 345 020 360 020 67*** 360 040 66*** 090 63 40 090 63 40 830 830 83*** 305 76*** 3 930 74*** 930 74*** *DY080R9V3W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS) 2.0 2.5 3.0 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 ON ON OFF ON ON ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 95 30 60 45 205 0 235 335 3 455 05 60 25 85 265 0 385 3 0 5 205 255 240 385 0 40 20 435 680 200 790 245 300 280 020 3 00 3 040 365 070 670 235 740 265 7 760 300 290 840 345 Page B6435 5

Service Facts ST 2ND *DY00R9V4W FURNACE AIRF () AND POWER () VS. WITH FILTER st CAPACITY = 62,000 2nd CAPACITY = 93,000 AIRF DIP SWITCH SETTING SETTING SW 7 SW 8 0. 0.3 0.5 0.7 0.9 ON ON MEDIUM OFF ON MEDIUM ** ON OFF OFF OFF ON ON MEDIUM OFF ON MEDIUM ** ON OFF OFF OFF NOTES: * First letter may be "A" or "T" ** Factory setting *** Above MAX temperature change 923 6 0 020 55 45 85 275 225 298 66 235 439 60 639 430 790 8 0 955 59 65 047 90 66 240 305 43 290 320 65 305 459 59 6 52 525 88 47 670 960 20 0 2 72 300 328 42 365 335 65 2 470 6 52 83 47 770 9 265 042 77 3 328 42 5 343 64 5 3 5 6 52 680 708 7 947 59 029 3 78 420 328 42 50 343 64 520 470 59 60 6 640 5 *DY00R9V4W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS) 2.5 3.0 3.5 4.0 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 ON ON OFF ON ON ON OFF OFF ON ON ON OFF OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 870 00 989 20 24 75 0 45 86 95 336 255 26 90 394 9 395 377 599 425 80 0 885 40 08 80 39 225 075 200 205 255 366 225 255 422 360 604 475 42 355 624 50 88 690 887 85 06 230 30 275 070 245 220 383 405 235 320 436 430 60 555 426 430 636 5 85 775 88 230 02 285 35 335 070 220 370 385 470 240 385 437 5 599 645 433 50 68 670 694 735 876 999 325 35 0 3 26 0 38 5 243 5 430 0 57 640 428 5 52 635 525 660 6 Page B6435

ST 2ND Service Facts *DY20R9V5W FURNACE AIRF () AND POWER () VS. WITH FILTER st CAPACITY = 74,000 2nd CAPACITY = 2,000 AIRF DIP SWITCH SETTING SETTING SW 8 SW 7 0. 0.3 0.5 0.7 0.9 NOTES: * First letter may be "A" or "T" ** Factory setting ON ON MEDIUM OFF ON ** ON OFF OFF OFF ON ON MEDIUM OFF ON ** ON OFF OFF OFF 025 65 230 3 280 5 43 400 5 66 8 660 20 860 205 025 65 200 3 5 43 0 5 66 470 8 7 2000 5 880 20 940 67 240 330 3 0 5 43 0 5 66 0 8 780 8 80 880 67 290 3 470 5 43 620 5 66 60 60 720 60 7 775 820 67 4 3 0 4 46 4 7*** 690 0 69 640 5 66 670 625 63 7 *DY20R9V5W FURNACE COOLING AIRF () AND POWER () VS. WITH FILTER OUTDOOR UNIT SIZE (TONS) 3.5 4.0 5 AIRF SETTING (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) (3 /TON) (400 /TON) (4 /TON) DIP SWITCH SETTING SW SW 2 SW 3 SW 4 0. 0.3 0.5 0.7 0.9 OFF ON OFF ON OFF ON OFF OFF OFF ON ON OFF ON OFF OFF ON ON OFF OFF OFF ON OFF ON OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF NOTES: * First letter may be "A" or "T". At continuous fan setting: Heating or Cooling airflows are approximately % of selected cooling value. 2. airflow (3 cfm/ton) is COMFORT & HUMID CLIMATE setting; airflow (400 cfm/ton) is typical setting; airflow (4 cfm/ton) is DRY CLIMATE setting. 225 240 4 300 460 60 7 0 2000 830 200 970 225 280 520 0 7 640 2000 860 2000 90 225 470 590 4 60 760 7 720 8 8 225 400 520 640 520 670 6 690 6 680 740 6 780 225 4 0 4 0 4 0 630 4 60 5 660 70 Page B6435 7

IFC Error Flash Codes Service Facts INTEGRATED FURNACE CONTROL RED LED "ERROR" FLASH CODES 2 Flashes System Lockout (Retries or Recycles exceeded) Draft Pressure Error Possible problems: 3 Flashes a) Venting problem b) Pressure switch problem c) Inducer problem 4 Flashes Open Temperature Limit Switch 5 Flashes Flame sensed when no flame should be present 6 Flashes 5 volt AC power reversed, ignitor (Triac) fault, poor grounding or system voltage too low 7 Flashes Gas valve circuit error 8 Flashes Low flame sense 9 Flashes Open Inducer Limit switch 0 Flashes Inducer communication error Solid Internal GV error or Low TH voltage Solid Red w/solid Green "STATUS" LED Continuous Reset caused by a blown fuse or internal error. FAULT CODE RECOVERY On power up, last 4 faults, if any, will be flashed on the red LED. The newest fault detected will flash first and the oldest last. There will be a 2 second delay between fault code flashes. Solid red LED error codes will not be displayed. The Green LED will be on solid during last fault recovery. At any other time the control is powered, the Green LED indicator light will operate as shown in Table 4 and the red LED will flash LitePort data (one flash) every 20 seconds. INTEGRATED FURNACE CONTROL GREEN "STATUS" LED FLASH CODES Flashing Slow Flashing Fast Normal No call for Heat Normal Call for Heat Red LitePort LED Green Status LED Fault Code Reset The last 4 fault codes can be erased from memory by powering up the control with G energized and then applying R to the W terminal 3 times within 6 seconds. The control will acknowledge the reset by turning on the red LED for 2 seconds. *UY / DY Integrated Furnace Control 8 Page B6435

NOTES Service Facts Page B6435 9

American Standard Inc. 6200 Troup Highway Tyler, TX 707 For more information contact your local dealer (distributor) Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice. P.I.