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Installer's Guide
Variable Speed, 2-Stage, 80% Upflow/ Horizontal
Gas-Fired Furnaces, "Fan Assisted Combustion
System" with Whole House Air Cleaner
*UD2B060AFV32A
*UD2B080AFV32A
*UD2C080AFV42A
*UD2B100AFV32A
*UD2D120AFV52A
*__First letter may be "A" or "T"
ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit.
This unit is equipped with an integrated high efficiency
Whole House Air Cleaner. Careful consideration must
be taken in the installation process to avoid personal in-
jury, property damage or equipment damage. These in-
structions do not cover all variations in systems or pro-
vide for every possible contingency. Should further in-
formation be desired or particular problems arise which
are not covered sufficiently by this manual, contact
your local distributor or the manufacturer as listed on
the Furnace nameplate.
In addition, these Furnaces are suitable for installation
in an attic, garage or crawl space with ducted supply
and return air.
Safety signal words are used to designate a degree or level of seriousness associated with a particular hazard. The
signal words for safety markings are WARNING and CAUTION.
a. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious in-
jury.
b. CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate in-
jury. It is also used to alert against unsafe practices and hazards involving only property damage.
Please return to service information pack upon completion of work.
For VENT SIZING INFORMATION see:
USA —
National Fuel Gas Code ........ ANSI Z223.1/ NFPA 54 (latest version)
CANADA —
Natural Gas Installation Code ..... CAN/ CGA-B149.1 (latest version)
Propane Installation Code ............ CAN/ CGA-B149.2 (latest version)
USA/ CANADA ALTERNATE —
Category I Venting Guide .......... Pub. No. 18-CH23D1 (latest version)
1 8 - CD2 4 D1 - 2
Upflow/ Horizontal*
*Units are BOTTOM RETURN only
Horizontal Conversion for these furnaces
may be left or right side rotation.
Available in French Canadian (FC)
A341789P08
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Related Manuals for American Standard AUD2B060AFV32A
Summary of Contents for American Standard AUD2B060AFV32A
- Page 1 1 8 - CD2 4 D1 - 2 Installer’s Guide Available in French Canadian (FC) Variable Speed, 2-Stage, 80% Upflow/ Horizontal Gas-Fired Furnaces, “Fan Assisted Combustion System” with Whole House Air Cleaner *UD2B060AFV32A *UD2B080AFV32A *UD2C080AFV42A *UD2B100AFV32A *UD2D120AFV52A *__First letter may be “A” or “T” ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT —...
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Page 2: Safety Section
Installer’s Guide ▲ SAFETY SECTION WARNING ▲ WARNING Failure to follow safety warnings exactly, could result in a fire or explosion causing property CARBON MONOXIDE POISONING HAZARD damage, personal injury or loss of life. Failure to follow the steps outlined below for each —... - Page 3 Installer’s Guide ▲ Contents CAUTION To prevent shortening its service life, the Furnace should not be used as a “Construction Heater” during Safety Section the finishing phases of construction until the require- Installation Instructions ments listed in item 9, a-i of the safety section of this publication have been met.
- Page 4 Installer’s Guide GENERAL INSTALLATION INSTRUCTIONS The location of the Furnace is normally selected by the The manufacturer assumes no responsibility for equip- architect, the builder, or the installer. However, before ment installed in violation of any code or regulation. the Furnace is moved into place, be sure to consider the following requirements: It is recommended that Manual J of the Air Condition- ing Contractors Association (ACCA) or A.R.I.
- Page 5 Installer’s Guide NOTE: Do NOT install an atomizing style humidifier in the return plenum of this unit. 13. Flow-through Bypass Humidifiers Excessive bypass air may cause water blow-off, which will adversely affect system operation and air cleaner performance. To verify bypass airflow, fol- low the Bypass Humidifier Pre-Installation Check- out and Set-Up Procedures available through your local distributor.
- Page 6 Installer’s Guide 18-CD24D1-2...
- Page 7 Installer’s Guide INSTALLATION INSTRUCTIONS ▲ UPFLOW INSTALLATION CAUTION Standoffs and screws (See Figure 2) are included with Bottom panel for furnace to remain in place until unit the cased coils for attachment to the Furnace. There reaches final installation location. If bottom panel is re- are clearance alignment holes near the bottom of the moved before installation the collection cell and field coil wrapper.
- Page 8 Installer’s Guide Typical Upflow/ Horizontal Attic Installation Materials • Duct Flanges Two 23.5" Flanges Two Additional Flanges 15.92" (for 17.5" cabinet) 19.42" (for 21" cabinet) 21.92" (for 24.5" cabinet) • Screws Eight 5/16" Blunt Tip Screws with 5/16" Hex Head Steps 1.
- Page 9 Installer’s Guide Use pre- AIR FOR COMBUSTION AND VENTILATION Use pre-drilled drilled Adequate flow of combustion and ventilating air must holes holes not be obstructed from reaching the Furnace. Air open- ings provided in the Furnace casing must be kept free of obstructions which restrict the flow of air.
- Page 10 Installer’s Guide NOTE: Extended warranties are NOT available in some 2. All air from outdoors as in Figure 11: The confined instances. Extended warranty does NOT cover repairs space shall be provided with two permanent open- to equipment installed in establishments with corro- ings, one commencing within 12 inches of the top sive atmospheres, including but limited to, dry clean- and one commencing within 12 inches of the bot-...
- Page 11 Installer’s Guide Bottom Return Only Figure 11 NOTE: Minimum return air temperature is 55° F. NOTE: No sheetmetal screws may be used from 0-4" from the bottom of the unit. Screws will interfere with the air cleaner. See Figure 4. The following warning complies with State of California law, Proposition 65.
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Page 12: General Venting Instructions
Installer’s Guide VENT PIPING GENERAL VENTING INSTRUCTIONS These Furnaces have been classified as Fan-Assisted ▲ Combustion System, Category I Furnaces under the WARNING “latest edition” provisions of ANSI Z21.47 and CAN/ CARBON MONOXIDE POISONING HAZARD CGA 2.3 standards. Category I Furnaces operate with a non-positive vent static pressure and with a flue loss of Failure to follow the steps outlined below for each not less than 17 percent. - Page 13 Installer’s Guide TABLE 4 11. Horizontal pipe runs must be supported by hangers, MASONRY CHIMNEY VENTING straps or other suitable material in intervals at a minimum of every 3 feet of pipe. Tile Lined Chimney Chimney Lining Flexible 12. A Furnace shall not be connected to a chimney or Type Furnace Internal External...
- Page 14 Installer’s Guide FIGURE 12 FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE 1 STAGE HEATING USING A 1 STAGE HEATING THERMOSTAT NO COOLING 1. Be sure power agrees with equipment nameplates. 2. Low voltage (24 volt wiring) to be No. 18 A.W.G. min. 3.
- Page 15 Installer’s Guide FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE 2 STAGE HEATING USING A 2 STAGE HEATING THERMOSTAT NO COOLING 1. Be sure power agrees with equipment nameplates. 2. Low voltage (24 volt wiring) to be No. 18 A.W.G. min. 3.
- Page 16 Installer’s Guide FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE 1 STAGE HEATING, 1 STAGE COOLING USING A 1 STAGE HEATING, 1 STAGE COOLING THERMOSTAT (OUTDOOR SECTION WITHOUT TRANSFORMER) W14 JUMPER SEE NOTE 9 OUTDOOR UNIT (NO TRANSFORMER) Y1/Ylo NOTE 7 FIELD ADDED JUMPER W1 TO W2.
- Page 17 Installer’s Guide FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE 2 STAGE HEATING, 1 STAGE COOLING USING A 2 STAGE HEATING, 1 STAGE COOLING THERMOSTAT (OUTDOOR SECTION WITHOUT TRANSFORMER) NOTE 9 W14 JUMPER SEE NOTE 9 OUTDOOR UNIT (NO TRANSFORMER) Y1/Ylo NOTE 7 TO 115 V 1 PH.,...
- Page 18 Installer’s Guide FIELD WIRING DIAGRAM FOR VARIABLE SPEED 2 STAGE FURNACE 2 STAGE HEATING, 2 STAGE COOLING (OUTDOOR SECTION WITHOUT TRANSFORMER) OUTDOOR UNIT NO. 1 (NO TRANSFORMER) SEE NOTE 3 NOTE 7 OUTDOOR UNIT NO. 2 (NO TRANSFORMER) TO 115 V 1 PH., 60 HZ., POWER SUPPLY PER LOCAL CODES...
- Page 19 Installer’s Guide ▲ ELECTRICAL CONNECTIONS WARNING Make wiring connections to the unit as indicated on en- EXPLOSION HAZARD! closed wiring diagram. As with all gas appliances using ODORANT FADE MAY MAKE THE GAS UNDETECT- electrical power, this Furnace shall be connected into a ABLE EXCEPT WITH A WARNING DEVICE.
- Page 20 Installer’s Guide The Furnace must be isolated from the gas supply pip- Figure 14 LEFT SIDE PIPING (STANDARD) ing by closing its individual manual shut-off Valve dur- ing any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa). NOTE: Maximum pressure to the Gas Valve for natural gas is 13.8"...
- Page 21 Installer’s Guide COMBUSTION AND INPUT CHECK b. Attach a Manifold Pressure gauge to the outlet (See also High Altitude Derate) pressure tap marked “OUT PRESS TAP” on White-Rodgers gas valve model 36G. (see Figure ▲ WARNING 17 for White-Rodgers gas valve model 36G). At- tach flexible tubing and a Manometer to the Replace and/ or tighten all plugs removed or loosened when adjusting gas pressure.
- Page 22 Installer’s Guide TABLE 9 6. To increase outlet pressure, turn the regulator adjust screw clockwise. To decrease outlet FINAL MANIFOLD PRESSURE SETTINGS (inches w.c.) pressure, turn the regulator adjust screw FUEL 2nd Stage Max. 1st Stage Max. counterclockwise. The final Manifold Pressure NATURAL GAS 3.5"...
- Page 23 Installer’s Guide TABLE 10 START-UP AND ADJUSTMENT PART NUMBERS FOR REPLACEMENT ORIFICES PRELIMINARY INSPECTIONS DRILL PART DRILL PART ▲ SIZE NUMBER SIZE NUMBER WARNING ORF00501 ORF00555 Disconnect power to the unit before removing the ORF00644 ORF00693 ORF00909 ORF00907 blower door. Allow a minimum of 15 seconds for IFC ORF00910 ORF00908 power supply to discharge to 0 volts.
- Page 24 Installer’s Guide For complete shutdown: Turn the gas cock knob on the Comfort Control call for heat (1-Stage Comfort main Gas Valve to the “OFF” position (See Figures 14 & Control) 15). W1/ W2 (jumpered) Comfort Control contacts close sig- Disconnect the electrical supply to the unit.
- Page 25 Installer’s Guide ▲ WARNING Heating: The Integrated Furnace Control (IFC) con- trols the Variable Speed Indoor Blower. The blower Operation with the door removed or ajar can permit the “on” time is fixed at 45 seconds after ignition. escape of dangerous fumes. All panels must be se- curely closed at all times for safe operation of the Fur- FAN-OFF period is field selectable by dip switches #1...
- Page 26 Installer’s Guide CONDITIONS THAT AFFECT SYSTEM NOTE: Whole House Air Cleaner is energized when blower is operating and there is a call for heat or cool. OPERATION This can result in brief periods of blower operation 1. EXCESSIVE COMBUSTION PRESSURE (WIND IN with the whole house air cleaner off.
- Page 27 Installer’s Guide CLEANING THE COLLECTION CELL Figure 19 1. Turn the air conditioning system off at the Comfort Control and turn off service disconnect. 2. Remove top furnace door. 3. Slide COLLECTION CELL out of Furnace. CLEANING The COLLECTION CELL may be cleaned either by vacuuming (recommended method) or by washing.
- Page 28 IFC Error Flash Codes Installer’s Guide INDOOR MOTOR MAINTENANCE The following warning complies with State of California law, Proposition 65. ▲ WARNING NOTE: Direct drive motors have bearings which are permanently lubricated and under normal use, lubri- This product contains fiberglass wool insulation! cation is not recommended.
- Page 29 Installer’s Guide Figure 21 FAULT CODE RECOVERY On power up, last 4 Faults, if any, will be flashed on the *UX2/ DX2 Integrated Furnace Control Red LED. The newest Fault detected will flash first and the oldest last. There will be a 2 second delay between Fault Code flashes.
- Page 30 CHECKOUT PROCEDURES After installation has been completed, it is recommended that the Furnace be checked against the following checklist. 11. Check the Whole House Air Cleaner power output 1. Make sure power is “OFF” at power disconnect switch ..............[ ] by the Green LED illumination.