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Whirlpool WFAU Installation Instructions Manual

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Whirlpool WFAU User Manual
Whirlpool WFAU User Guide
Whirlpool WFAU Online Manual

Text of Whirlpool WFAU User Guide:

  • Whirlpool WFAU, 80% GAS FURNACE INSTALLATION INSTRUCTIONS GAS FURNACE SAFETY Table of Contents GAS FURNACE SAFETY................................................................1 INSTALLATION REQUIREMENTS................................................3 Tools and Parts ............................................................................3 Location Requirements................................................................3 Installation Configurations ...........................................................4 Duct Work Requirements.........................................

  • Whirlpool WFAU, 2 ADDITIONAL SAFETY INFORMATION SAVE THESE INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS ■ Use only with type of gas approved for this furnace. Refer to the furnace rating plate. ■ Install this furnace only in a location and position as specified in the Location Requirements section of these instructions. ■ Provide adequate combustion and ventilation air to the furnace space as specified in the “Venting Requirements” section of these instructions. ■ Combustion products must be discharged outdoors. Connect t

  • 3 INSTALLATION REQUIREMENTS These instructions are intended as a general guide only for use by qualified persons and do not supersede any national or local codes in any way. Compliance with all local, state, or national codes pertaining to this type of equipment should be determined prior to installation. Read this entire instruction manual, as well as the instructions supplied in separ

  • Whirlpool WFAU, 4 ■ In a residential garage, a gas-fired furnace must be installed so the burner(s) and the ignition source are located not less than 18 in. above the floor. The furnace is to be located or protected to avoid physical damage by vehicles. ■ WFAR, WFLR, WFAT, and WFLT models may be installed as suspended units in the horizontal position. These furnaces are not designed for direct attachment of suspension rods to the furnace casing. See the “Installation Configurations” section. ■ If the furnace is to be installed in an attic or other insulated

  • 5 Horizontal Installations WFAR, WFLR, WFAT and WFLT model furnaces can be horizontally installed for airflow right to left or left to right. To ensure access to parts for servicing, install upflow and counterflow furnaces so that the burner and blower access panels are readily accessible. NOTE: When installed horizontally, the installer must install a sheet metal screw to retain the

  • Whirlpool WFAU, 6 Combustible Floor Installation (Counterflow Models only) Duct Work Requirements Install the conditioned air plenum, ducts and air filters (if not provided on the furnace) in accordance with NFPA 90B Standard for the Installation of Warm Air Heating and Air-Conditioning Systems (latest edition). The furnace is provided with flanges for the connection of the plenum and ducts. All air filters must be listed as Class 2 furnace air filters. Electrical Requirements ■ The furnace must be grounded and wired in accordance with local codes or, in the absence of

  • Whirlpool WFAU, 7 Equipment in Confined Space (All Air from Inside) Confined Space Installation/Air from Outside Structure If air from outside is brought in for combustion, the confined space shall be provided with two permanent openings. One opening shall be within 12 in. of the ceiling and one opening within 12 in. of the floor. Several methods can be used to bring the outside air in through these openings. The openings must open directly or by ducts to the outdoors, through spaces (crawl space or attic) that fr

  • Whirlpool WFAU, 8 Indoor air as the source of combustion air Indoor air as the source of combustion air is acceptable in most applications if the following guidelines are met: ■ All provisions for indoor combustion air must meet the requirements for combustion air indicated in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 (latest edition), and/or any applicable local codes. ■ If indoor combustion air is used, the air supply to the furnace should not be exposed to the following substances: Permanent wave solutio

  • Whirlpool WFAU, 9 Vent Option - Vent Through Roof ■ All vents passing through floors, ceilings, and walls must be fire stopped according to the requirements of the National Fuel Gas Code. See “Vent Options.” Vent Option - Vent Through Ceiling Vent Option - Vent Through Floor Sidewall Venting This furnace can be sidewall (horizontally) vented with a listed sidewall venter such as Field Controls Model SWG-4HD with CK- 43 Control Kit, or Tjernlund Model GPAK-JT. See the Sidewall Venter Limitations Chart

  • Whirlpool WFAU, 10 Factory-Built Chimney Venting NOTE: All vent pipe run outside shall be constructed of factory-built chimney sections. ■ Extend the vent connector into the chimney so that it is flush with the inside of the flue liner. Seal the joint between the pipe and the liner. ■ Masonry chimneys serving fireplaces cannot be used for venting purposes unless the fireplace opening is permanently sealed. ■ A vent connector serving this appliance must not be connected into any portion of mechanical draft systems operating under positive pressure. ■ The vent pipe must n

  • Whirlpool WFAU, 11 Connect Venting 1. Using a ¹⁄₄ in. sheet metal screw, secure the vent pipe to the inducer blower outlet. 2. Make sure all vent connections do not leak. 3. Check that the venting is open, and that it is the correct size. 4. Check that the vent pipe terminates outside the building. Install Duct Work IMPORTANT: ■ Install duct work in accordance with NFPA 90B and any local codes. ■ If there is no complete return air duct system, the return air connection must be sealed to the furnace casing and run full size to a location outside the utility room or space housing the furnace to pr

  • Whirlpool WFAU, 12 Make Electrical Connections Thermostat Install a room thermostat according to the instructions furnished with it. Select a location on an inside wall that is not subject to drafts, direct sunshine, or other heat sources. Make the low voltage thermostat connections to the blower control board as indicated on the Wiring Connection Diagram. Continuous Low Speed Blower If continuous blower operation on low speed is desired, connect the low speed motor tap to the CONT (constant) air terminal on the blower control board. See the Wiring Connection Diagram. The blower will operate on low speed whenever the main power is connec

  • Whirlpool WFAU, 13 Make Gas Connections IMPORTANT: This furnace requires conversion for use with propane. To order the correct conversion kit, see “Accessories.” 1. Install the field gas supply as shown. 2. Provide a sediment trap on the outside of the furnace. 3. Install a manual gas shutoff valve in the gas line, outside the unit, 5 ft above the floor, or in accordance with any local codes. 4. Install a test gauge connection with a ¹⁄₈ in. NPT plugged tapping immediately upstream of the shutoff valve as shown. 5. Connect the gas pipe to the

  • Whirlpool WFAU, 14 Adjust the Furnace Input Rate (if required) For altitudes 4,500 to 7,500 feet above sea level. 1. Remove the burner access door. 2. Move the gas control switch to the OFF position. Use only your hand to move the gas control switch; tools are not required. 3. Remove the outlet pressure tap plug on the gas control valve and connect pressure gauge to the ¹⁄₈ in. NPT outlet pressure tap. Gas Control Valve 4. Be sure the gas control switch has been in the OFF position for at least 5 minutes before starting the unit. 5. Mo

  • 15 Complete Installation IMPORTANT: Do not use this furnace if any part has been under water. Immediately call a qualified person to inspect the furnace and to replace any part of the control system and gas control which has been under water. 1. Check to be sure you have all of your tools. 2. Dispose of all packaging materials. 3. Check the furnace in its final lo

  • Whirlpool WFAU, 16 Sequence of Operation Heating A call for heat from the thermostat closes R to W on the blower control board, which begins the ignition sequence. The induced draft blower output energizes. The pressure switch senses normal combustion airflow, and closes. After a 15-second pre- purge, the control energizes the hot surface igniter. After an igniter warm-up period, the main gas valve energizes. Upon main burner ignition, the circulating air blower energizes following a 30-second delay. When the call for heat is satisfied, R to W opens and the gas to the burners shuts off. The control turns off the inducer after a 5- second post-purge delay and the heating speed blower output tu

  • Whirlpool WFAU, 17 TROUBLESHOOTING Furnace Fails to Operate Properly Review “Sequence of Operation” and visually inspect the following before troubleshooting: Is the power to the furnace on? Is the blower compartment door securely closed? Are the manual shutoff valves in the gas line to the furnace open? Failure Codes The system has a built-in, self-diagnostic capability. The control continuously monitors its own operation and the operation of the system. If a system problem occurs, a failure code is indicated by the LED on the gas control valve. See the Failure Codes chart for a description of the flash codes. IMPORTANT: Do not remove the blower compartment door or turn off the power to the f

  • Whirlpool WFAU, 18 Wiring Connection Diagram - Honeywell ® SmartValve II ® Ignition System Check codes for proper wiring and circuit protection before installation. NOTES: 1. If any of the original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature rating of at least 90°C. 2. Not used on all models 3. For a fixed blower off delay of 90 seconds see “Blower Control Board” section. Jumper can be cut for a 150 second off delay. INDUCED DRAFT BLOWER INTERLOCK SWITCH CIRCULATION BLOWER CONDENSER THERMOSTAT & SUB-BASE HEAT ANTICIPATOR .75 AMP LINE VOLTAGE

  • 19 Wiring Schematic - Honeywell ® SmartValve II ® Ignition System ROLLOUT SWITCH AUX LIMIT 4 3 2 DATA C R C3 C2 C1 FLAME SENSOR 1 432178123456 SMARTVALVE II IGNITION CONTROL 563421 NEUTRALS NEUTRALS NEUTRALS 120 VAC N NEUTRALS CIRCULATION FAN HI LOW MED M1 EAC(S) CONSTANT HEAT COOL HUM K2 K2 K1 K1 AIR CLEANER HUMIDIFIER CONDENSER BLOWER CONTROL CENTER PRESSURE SWITCH HIGH LIMIT R

  • Whirlpool WFAU, ASSISTANCE OR SERVICE If you need further assistance, you can write to the below address with any questions or concerns: Whirlpool ® Home Cooling and Heating 7901 S.W. 6th Court Plantation, Florida 33324 Please include a daytime phone number in your correspondence. Accessories To order accessories ask for the appropriate part number listed below or contact your Whirlpool ® Home Cooling and Heating dealer. ALPKT572-2 Natural Gas to Propane Conversion Kit WAFILTHA7-2 Filter Frame Kit AFILT524-1 Side Retur

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