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INSTALLATION, OPERATION,
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
Model:
CUX1B040A9241A
CUX1B060A9361A
CUX1B080A9421A
CUX1C100A9481A
CUX1D100A9601A
CUX1D120A9601A
IMPORTANT — This Document is customer property and is to remain with this unit.
Upflow / Horizontal*
Since the manufacturer has a policy of continuous product and product data
improvement, it reserves the right to change design and specifications without notice.
© 2011 American Standard Heating & Air Conditioning
AND MAINTENANCE GUIDE
CDX1B040A9241A
CDX1B060A9361A
CDX1B080A9421A
CDX1C100A9481A
CDX1D120A9601A
Please return to service information pack upon completion of work.
Upflow / Horizontal* and
Downflow / Horizontal*,
Single Stage Direct Vent Gas-
Fired Condensing Furnaces
to LEFT Side for horizontal installation
All Rights Reserved
41- 5016- 12
Downflow / Horizontal*
* Models can ONLY be rotated
A341624P07
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Table of Contents
Related Manuals for American Standard CUX1B040A9241A
Summary of Contents for American Standard CUX1B040A9241A
- Page 1 LEFT Side for horizontal installation Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice. A341624P07 © 2011 American Standard Heating & Air Conditioning All Rights Reserved...
- Page 2 Installation Instructions SAFETY SECTION Safety signal words are used to designate a degree or level of The following safety practices and precautions must be followed seriousness associated with a particular hazard. The signal words during the installation, servicing, and operation of this furnace. for safety markings are WARNING and CAUTION.
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Page 3: Table Of Contents
INSTALLATION INSTRUCTIONS Installation Instructions GENERAL CONTENTS The manufacturer assumes no responsibility for equipment in- INSTALLATION INSTRUCTIONS ....1-31 stalled in violation of any code or regulation. General Installation Instructions ....3 It is recommended that Manual J of the Air Conditioning Contrac- Location and Clearances ...... -
Page 4: Outline Drawings
Installation Instructions Page 4 Pub. No. 41-5016-12... - Page 5 Installation Instructions Pub. No. 41-5016-12 Page 5...
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Page 6: Horizontal Installation
Installation Instructions TABLE 1 UPFLOW INSTALLATION FLOOR OPENING PLENUM OPENING Standoffs and screws (See Figure 1) are included with the cased CABINET RETURN WIDTH DUCT WIDTH coils for attachment to the furnace. There are clearance alignment "A" "B" "C" "D" holes near the bottom of the coil wrapper. -
Page 7: Air For Combustion And Ventilation
Installation Instructions Confined spaces are installations with less than 50 cu. ft. of space per 1000 BTU/hr. input from all equipment installed. Air for combustion and ventilation requirements can be supplied from inside the building as in Figure 8 or from the outdoors, as in Figure 9. -
Page 8: Duct Connections
Installation Instructions Central furnaces, when used in connection with cooling units, shall be installed in parallel or on the upstream side of the cooling units to avoid condensation in the heating element, unless the furnace has been specifically approved for downstream installation. With a parallel flow arrangement, the dampers or other means used to control flow of air shall be adequate to prevent chilled air from entering the furnace, and if manually operated, must be equipped... -
Page 9: Return Air Filters
(See Figure 11 “Typical Side Return Filter”). CABINET WIDTH NUMBERS QTY & SIZE RETURN AIR FILTERS FOR UPFLOW FURNACE IN CUX1B040A9241A HORIZONTAL CONFIGURATION CUX1B060A9361A 17-1/2" 1 - 17" X 25" X 1" When the Upflow Furnace is installed in the horizontal configura- CUX1B080A9421A tion, the return air filters must be installed exterior to the cabinet. - Page 10 Installation Instructions ▲ WARNING 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:...
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Page 11: General Venting Instructions
Installation Instructions GENERAL VENTING THIS FURNACE MUST BE VENTED TO THE OUTDOORS. 3. Insofar as is practical, close all building doors and windows and all doors between the space in which the appliances remaining THESE FURNACES ARE INDUCED DRAFT VENTED AND connected to the common venting system are located and other MUST NOT BE CONNECTED TO ANY VENT SERVING AN- spaces of the building. - Page 12 Installation Instructions IMPORTANT: INSPECTION. The state or local gas inspector of the The Commonwealth of Massachusetts requires compliance side wall horizontally vented gas fueled equipment shall not with regulation 248 CMR 4.00 and 5.00 for installation of approve the installation unless, upon inspection, the inspector through –...
- Page 13 Installation Instructions TABLE 7 PLASTIC PIPE DESIGNATIONS ASTM STANDARD PIPE TYPE ALLOWABLE TEMPERATURE MARKING F891 CELLULAR CORE *158 ASTM F891 D2665 DWV PIPE **158 ASTM D2665 D1785 SCH 40, 80, 120 **158 ASTM D1785 D2241 SDR SERIES **158 ASTM D2241 CPVC ASTM STANDARD PIPE TYPE...
- Page 14 Installation Instructions UPFLOW / HORIZONTAL VENTING TABLE TABLE 8 MAXIMUM VENT LENGTH: DIRECT VENT (2 PIPE SYSTEM) - NONDIRECT VENT (1 PIPE SYSTEM) - MAXIMUM TOTAL EQUIVALENT FEET FOR MAXIMUM TOTAL EQUIVALENT FEET FOR VENT AND INLET AIR PIPES (See Notes) VENT PIPE ONLY (See Notes) 2"...
- Page 15 Installation Instructions INSIDE CORNER DETAIL X AIR SUPPLY INLET VENT TERMINAL AREA WHERE TERMINAL IS NOT PERMITTED Direct Vent Terminal Clearances Canadian Installations US Installations Clearance above grade, veranda, porch, deck, or 12 inches (30 cm) 12 inches (30 cm) balcony 6 inches (15 cm) for appliances =/<...
- Page 16 Installation Instructions Non-Direct Vent Terminal Clearances Canadian Installations US Installations Clearance above grade, veranda, porch, deck, or 12 inches (30 cm) 12 inches (30 cm) balcony 6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12 inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/< 4 feet (1.2m) below or to the side of opening;...
- Page 17 Installation Instructions single wall stainless steel venting. See Figure 30. HORIZONTAL VENTING Shield material to be a minimum of 24 gauge stainless or alumi- nized sheet metal. Minimum dimensions are 12"x12". Shield NOTE: Vent termination kit BAYAIR30AVENTA or BAYVENT200* may must be fastened to both inside and outside of wall.
- Page 18 Installation Instructions ▲ anchor type fasteners suited to the outside or inside wall surfaces. CAUTION NONCOMBUSTIBLE MATERIAL WALL The vent for this appliance shall not terminate The hole through the wall must be large enough to maintain pitch (1) Over public walways; or of vent and properly seal.
- Page 19 Installation Instructions DOWNWARD VENTING Furnace may be in vertical or horizontal configuration. All horizontal pipes must be supported at a maximum of 3 DOWNWARD VENT LENGTH IS foot intervals LIMITED TO A MAXIMUM OF 15 EQUIVALENT FEET. 40 Inch Upflow or Downflow Furnace Slope 1/4"...
- Page 20 Installation Instructions VENTING THROUGH THE ROOF MAINTAIN 12 IN. VENT (18 IN. FOR CANADA) When penetrating roof with a 2" PVC vent pipe, a 2" electrical REMOVE RIBS MINIMUM CLEARANCE conduit flashing may be used for a weather tight seal. Lubricate FROM CAP ABOVE HIGHEST flexible seal on flashing before PVC pipe is pushed through the...
- Page 21 Installation Instructions SEAL BETWEEN FLANGE, PIPE, COUPLING AND METAL PANEL WITH HI TEMP RTV SILICONE SEALANT FLUE PIPE COUPLING SUPPORT FLANGE CEILING GALVANIZED FIRESTOP SHOULD BE FABRICATED WITH 3-7/8" DIA. HOLE FOR SUPPORT FLANGE (12" x 12" PANEL OR 12" DIA MIN.) CLEARANCE ( 0"...
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Page 22: Condensate Piping
Installation Instructions CONDENSATE DRAIN INSTRUCTIONS If improper venting is observed during any of the above tests, the remaining common venting system must be corrected. Correction ▲ could require rerouting or resizing the remaining vent system. CAUTION HORIZONTAL INSTALLATION It is recommended that a drain pan be installed under the furnace (UPFLOW/HORIZONTAL OR to prevent property damage or personal injury from leaking con- DOWNFLOW/HORIZONTAL) - Page 23 Installation Instructions Downflow furnace - The furnace is shipped with the left side The trap must be repositioned to the exterior of the cabinet. Remove drainage setup. To change the right side drain, remove the drain the trap from its present location and reposition the trap outside lines from the trap, rotate the trap 180°...
- Page 24 Installation Instructions Cut off curved end of Inducer drain hose If upflow furnace is installed over a finished ceiling, overflow from the primary drain vent DOWNFLOW (HORIZONTAL) stack must flow into an auxillary drain pan to prevent damage to the finished ceiling below. Connections must be made to an OPEN/VENTED DRAIN.
- Page 25 Installation Instructions NOTE: ELECTRICAL CONNECTIONS The manifold pressure must be referenced to the burner box. Make wiring connections to the unit as indicated on enclosed wiring The burner box pressure tap equalizes the gas valve pressure diagram. As with all gas appliances using electrical power, this regulator.
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Page 26: Field Wiring Diagrams
FIELD WIRING DIAGRAMS Installation Instructions FIELD WIRING DIAGRAM FOR 1 STAGE FURNACE 1 STAGE HEATING USING A 1 STAGE HEATING COMFORT CONTROL NO COOLING COMFORT FURNACE CONTROL NOTE 6 TO 115 V 1 PH., 60 HZ., POWER SUPPLY PER LOCAL CODES From Dwg. -
Page 27: Gas Piping
Installation Instructions ▲ WARNING TABLE 9 ORIFICE SIZES FIRE OR EXPLOSION HAZARD MAIN BURNER ORIFICE INPUT NUMBER Failure to follow the safety warnings exactly could result in DRILL SIZE RATING serious injury, death or property damage. BTUH BURNERS NAT. GAS LP GAS Never test for gas leaks with an open flame. - Page 28 Installation Instructions AUTOMATIC GAS VALVE AUTOMATIC GAS VALVE WITH MANUAL SHUT-OFF WITH MANUAL SHUT-OFF MAIN MANUAL SHUT-OFF VALVE MAIN MANUAL SHUT-OFF VALVE GROUND UNION JOINT GROUND UNION JOINT DRIP DRIP UPFLOW MAY BE LEFT OR RIGHT HAND GAS PIPING FIGURE 32 THE DOWNFLOW (VERTICAL) MAY BE INSTALLED LEFT OR RIGHT SIDE GAS PIPING FIGURE 33 Regulator...
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Page 29: High Altitude Derate
Installation Instructions Furnace input rate and temperature rise should be checked again 9. Using a leak detection solution or soap suds, check for leaks after changing orifices to confirm the proper rate for the altitude. at the pressure outlet boss and pressure tap test screw. Installations above 4,000 feet may require a pressure switch 10. -
Page 30: Start-Up And Adjustment
Installation Instructions ▲ If for any reason your furnace should fail to operate damage WARNING could result, such as frozen water pipes. EXPLOSION HAZARD! SEQUENCE OF OPERATION PROPANE GAS IS HEAVIER THAN AIR AND MAY COLLECT Thermostat call for heat IN ANY LOW AREAS OR CONFINED SPACES. -
Page 31: Abnormal Conditions
Installation Instructions INDOOR BLOWER TIMING The following warning complies with State of California law, Proposition 65. Heating: The integrated furnace control controls the indoor blower. ▲ WARNING The blower start is fixed at 45 seconds after ignition. The FAN- OFF period is field selectable by dip switches at 60, 100, 140, or This product contains fiberglass wool insulation! 180 seconds. -
Page 32: Owner's Information
OWNER’S INFORMATION Owner’s Information User’s Information Guide Upflow/Horizontal and Downflow/ Horizontal, Single Stage Gas-Fired Condensing Furnaces IMPORTANT: Users MUST read all instructions in the manual. All manuals MUST be kept for future reference. IMPORTANT FACTS The flow of combustion and ventilating air must not be obstructed Contents: from reaching the furnace. - Page 33 Owner’s Information ▲ ▲ WARNING WARNING EXPLOSION HAZARD SAFETY HAZARD IN THE EVENT THAT ELECTRICAL, FUEL OR MECHANICAL BODILY INJURY CAN RESULT FROM HIGH VOLTAGE ELEC- FAILURES OCCUR, SHUT OFF THE GAS SUPPLY AT THE TRICAL COMPONENTS, FAST MOVING FANS, AND COM- MANUAL GAS SHUT OFF VALVE, LOCATED ON THE SUPPLY BUSTIBLE GAS.
- Page 34 Owner’s Information NOTE: Untrained personnel can perform basic maintenance functions The manufacturer of your furnace does not test any detec- such as cleaning and replacing filters. All other operations must tors and makes no representations regarding any brand or be performed by trained service personnel. type of detector.
- Page 35 Owner’s Information NOTE THE LOCATION OF THE MANUAL MAIN GAS SHUT-OFF VALVE FOR YOUR FURNACE. Have your installer or servicer show you the location if you have any questions. AUTOMATIC GAS VALVE AUTOMATIC GAS VALVE WITH MANUAL SHUTOFF WITH MANUAL SHUTOFF MAIN MANUAL SHUTOFF VALVE MAIN MANUAL...
- Page 36 Owner’s Information Proper 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.
- Page 37 Owner’s Information UPFLOW (Vertical) FILTER TABLES REQUIRED FILTERS - BOTTOM CABINET WIDTH FILTER QUANTITY & SIZE 17-1/2" 1 - 17" X 25" X 1" 21" 1 - 20" X 25" X 1" 24-1/2" 1 - 24" X 25" X 1" REQUIRED FILTERS - SIDE ** CABINET WIDTH FILTER QUANTITY &...
- Page 38 Owner’s Information The problem solver. A furnace is not a household appliance. It is complex and requires Keep your furnace looking like new for years. professional maintenance and repair. Clean the enamel finish of your furnace with ordinary soap and That’s why attempts at “do-it-yourself”...
- Page 39 Owner’s Information Regular dealer maintenance. NOTE: Never stop the cooling system by shutting off the main Be careful not to break igniter when removing burners. power. If the main power to your air conditioner is ever disconnected for Clean burners with brush and/or vacuum cleaner. Reassemble more than three hours, turn off the thermostat.
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Page 40: Service Instructions
SERVICE INSTRUCTIONS Service Instructions MAINTENANCE AND SERVICE INFORMATION WARNING DISCONNECT POWER BEFORE SERVICING ▲ ▲ WARNING WARNING FIRE OR EXPLOSION HAZARD CARBON MONOXIDE POISONING HAZARD Failure to follow the safety warnings exactly could result in Failure to follow the steps outlined below for each serious injury, death or property damage. -
Page 41: Product Specifications
Service Instructions PRODUCT SPECIFICATIONS MODEL CUX1B040A9241A CUX1B060A9361A CUX1B080A9421A TYPE Upflow Upflow Upflow RATINGS 2 Input BTUH 3 40,000 60,000 80,000 Capacity BTUH (ICS) 3 37,000 56,000 74,000 Temp. rise (Min.-Max.) °F. 30 - 60 30 - 60 35 - 65 AFUE 90.0... - Page 42 Service Instructions PRODUCT SPECIFICATIONS MODEL CDX1B040A9241A CDX1B060A9361A CDX1B080A9421A TYPE Downflow / Horizontal Downflow / Horizontal Downflow / Horizontal RATINGS 2 Input BTUH 3 40,000 60,000 80,000 Capacity BTUH (ICS) 3 38,000 56,000 74,000 Temp. rise (Min.-Max.) °F. 30 - 60 35 - 65 40 - 70 AFUE...
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Page 43: Airflow
SPEED TAP 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 HIGH - Black 1043 MED.-HIGH - Blue CUX1B040A9241A MED.-LOW - Yellow LOW - Red HIGH - Black 1394 1359 1314 1260 1196 1122 1038 MED.-HIGH - Blue 1250 1232... - Page 44 Service Instructions FURNACE AIRFLOW (CFM) VS. EXTERNAL STATIC PRESSURE (inches w.g.) MODEL SPEED TAP 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 HIGH - Black MED.-HIGH - Blue CDX1B040A9241A MED.-LOW - Yellow LOW - Red HIGH - Black 1341 1285 1223 1156...
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Page 45: Periodic Servicing Requirements
Service Instructions PERIODIC SERVICING REQUIREMENTS ▲ Turn off gas and electric power supply. To clean burners, remove WARNING the top burner bracket. Lift burners from orifices. SAFETY HAZARD NOTE: Disconnect power to the unit before removing the blower door. Be careful not to break igniter when removing burners. Clean Failure to follow this warning could result in personal injury burners with brush and/or vacuum cleaner. -
Page 46: Ifc Fault Codes
IFC FAULT CODES Service Instructions INTEGRATED FURNACE CONTROL ERROR FLASH CODES Flashing Slow --- Normal - No call for Heat Flashing Fast --- Normal - Call for Heat Continuous ON --- Replace IFC Continuous OFF --- Check Power 2 Flashes --- System Lockout (Retries or Recycles exceeded) Draft Pressure Error - Possible problems: a) Venting problem... -
Page 47: Unit Wiring Diagram
Service Instructions UNIT WIRING DIAGRAM From Dwg. D342775 Rev 1 (continued on next page) Pub. No. 41-5016-12 Page 47... - Page 48 Service Instructions SCHEMATIC DIAGRAM From Dwg. D342775 Rev 1 Page 48 Pub. No. 41-5016-12...
- Page 49 Service Instructions UNIT WIRING DIAGRAM From Dwg. D342798 Rev 0 (continued on next page) Pub. No. 41-5016-12 Page 49...
- Page 50 Service Instructions SCHEMATIC DIAGRAM From Dwg. D342798 Rev 0 Page 50 Pub. No. 41-5016-12...
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Page 51: Warranties
A commercial use is any application where the end purchaser uses the product for other than personal, family or household purposes. As an ENERGY STAR Partner, American Standard Inc., has determined that this product meets the ENERGY STAR guidelines for energy efficiency. - Page 52 Owner’s Information Limited Warranty Induced Draft Gas Furnace UC1, DC1, UX1, DX1, UX1-H, DX1-H, UX, DX, UY, DY, UD-R, DD-R, UD-RV, DD-RV, UD1-H, DH1, DD1-H, UD1, DD1, UE1, DE1, UH3, DH3, UX2, (First letter may be preceded DX2, UH2, DH2, UD2, DD2, UHM, DHM and UH1 by an “A”...
- Page 53 Owner’s Information Important Product Information Registering your products helps provide you with one of the strongest manufacturer limited warranties avail- able. To register, go to the manufacturer’s website or contact your dealer. You will need the serial number, model number, and installation date for each product being registered. Your dealer may have included these on your invoice or can provide a list for you to use.
- Page 54 American Standard Heating & Air Conditioning As an ENERGY STAR Partner, American Standard 6200 Troup Hwy. Inc., has determined that this product meets the Tyler, TX 75707 ENERGY STAR guidelines for energy efficiency. Pub. No. 41-5016-12...
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