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Whirlpool WFCT Installation Instructions Manual

90+ multipositional gas furnace
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90+ MULTIPOSITIONAL GAS FURNACE
GAS FURNACE SAFETY................................................................1
INSTALLATION REQUIREMENTS ................................................3
Tools and Parts ............................................................................3
Location Requirements................................................................4
Installation Configurations ...........................................................5
Ductwork Requirements ..............................................................5
Electrical Requirements ...............................................................5
Gas Supply Requirements ...........................................................5
Venting Requirements..................................................................5
INSTALLATION INSTRUCTIONS ..................................................7
Inspect Shipment .........................................................................7
Plan Vent System .........................................................................8
Determine Vent Pipe Direction.....................................................9
Connect Venting.........................................................................16
Install Condensate Disposal ......................................................17
Connection to Pressure Switch .................................................20
We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety
messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word "DANGER" or "WARNING."
These words mean:
WARNING
All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can
happen if the instructions are not followed.
®
Whirlpool
and Whirlpool Gold
Models WFCT, WGFDT
47861B008
INSTALLATION INSTRUCTIONS

GAS FURNACE SAFETY

Your safety and the safety of others are very important.
DANGER
®

Table of Contents

Install Ductwork..........................................................................21
Filter Specifications ....................................................................21
Make Electrical Connections .....................................................22
Make Gas Connections..............................................................22
Check the Furnace Input Rate (if required) ................................23
Adjust the Furnace Input Rate (if required) ................................23
Complete Installation..................................................................24
Shut Down the Furnace .............................................................25
SEQUENCE OF OPERATION ......................................................25
Heating .......................................................................................25
Fan On ........................................................................................25
Cooling .......................................................................................25
CONTROLS ...................................................................................26
TROUBLESHOOTING ..................................................................27
ASSISTANCE OR SERVICE .........................................................30
Accessories ................................................................................30
You can be killed or seriously injured if you don't immediately
follow instructions.
You can be killed or seriously injured if you don't follow
instructions.
Whirlpool
®
Home Cooling and Heating
14610 Breakers Drive
Jacksonville, FL 32258

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  Summary of Contents for Whirlpool WFCT

  • Page 1: Table Of Contents

    All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed. Whirlpool ® Home Cooling and Heating ® ® Whirlpool and Whirlpool Gold 14610 Breakers Drive Models WFCT, WGFDT Jacksonville, FL 32258 47861B008...
  • Page 2: Save These Instructions

    IMPORTANT SAFETY INSTRUCTIONS Use only with type of gas approved for this furnace. When a furnace is installed so that supply ducts Refer to the furnace rating plate. carry air circulated by the furnace to areas outside the space containing the furnace, the return air Install this furnace only in a location and position shall also be handled by duct(s) sealed to the as specified in the “Location Requirements”...
  • Page 3: Installation Requirements

    WARNING: Gas leaks cannot always be detected by smell. Gas suppliers recommend that you use a gas detector approved by UL or CSA. For more information, contact your gas supplier. If a gas leak is detected, follow the “What to do if you smell gas” instructions. The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of potential exposure to such substances.
  • Page 4: Location Requirements

    Location Requirements To avoid property damage caused by condensate drain WARNING blockage, install a field-fabricated auxiliary drain pan with a separate drain line to the outside under the entire furnace and drain system. Install according to local codes. All models are suitable for closet or utility room installation. Utility room installation requires: A door opening large enough for the widest part of the furnace.
  • Page 5: Installation Configurations

    High Altitude Installations Electrical Requirements This furnace is approved for operation at altitudes from 0 to WARNING 4,500 ft (0 to 1,371.6 m) above sea level without any required modifications. From 4,500 to 7,500 ft, (1,371.6 m to 2,286 m) the gas manifold pressure needs to be adjusted according to the information shown in the Manifold Pressure vs.
  • Page 6 Existing Venting Systems Venting Options When an existing furnace is removed or replaced, the original The furnace can be installed as either direct vent or nondirect venting system may no longer be sized to properly vent the vent furnaces. attached appliances. An improperly sized venting system can For either type of installation, special venting considerations result in spillage of flue products into the living space, the must be followed.
  • Page 7: Installation Instructions

    Furnaces installed in commercial buildings Unconfined Space Furnaces installed in buildings with indoor pools Furnaces installed in hobby or craft rooms An unconfined space is defined as “a space whose volume is Furnaces installed near chemical storage areas more than 50 cu. ft (1.4 m ) per 1,000 Btu/h of the combined input rating of all appliances installed in that space.”...
  • Page 8: Plan Vent System

    Plan Vent System The high efficiency of this furnace is accomplished by the Piping and Fitting Specifications removal of both sensible and latent heat from the flue gases. The Piping and Fitting Material ASTM Specification removal of latent heat results in the condensation of moisture in the flue gases.
  • Page 9: Determine Vent Pipe Direction

    Vent Table—90,000 to 100,000 Btu/h Models Vent Pipe Length—ft (m) Minimum Pipe Diameter—in. (cm) 5 (1.5) 2 (5.1) 2 (5.1) 2 (5.1) 2 (5.1) 2 (5.1) 2 (5.1) 2¹⁄₂ (6.4) 2¹⁄₂ (6.4) 2¹⁄₂ (6.4) 10 (3) 2 (5.1) 2 (5.1) 2 (5.1) 2 (5.1) 2 (5.1)
  • Page 10 Sidewall Vent Terminal Clearances—Direct Vented Furnaces (Horizontal Venting) Vent Terminal Air Supply Intake Inside Corner Detail Area Where Terminal Is Not Permitted Operable Fixed Closed Fixed Closed Operable U.S. Installations A Clearance above grade, veranda, porch, deck, or balcony 12" (30.5 cm) B Clearance to window or door that may be opened 6"...
  • Page 11 Sidewall Vent Terminal Clearances—Nondirect Vented Furnaces (Horizontal Venting) Vent Terminal Air Supply Intake Inside Corner Detail Area Where Terminal Is Not Permitted Operable Fixed Closed Fixed Closed Operable U.S. Installations Clearance above grade, veranda, porch, deck, or balcony 12" (30.5 cm) Clearance to window or door that may be opened 48"...
  • Page 12 Direct Vent Installation—Upflow Installations Refer to the appropriate vent table for proper pipe size, vent NOTE: Do not place an additional flue pipe screen in the length and the number of elbows allowed, and air intake intake termination because the air intake may freeze shut. length and the number of elbows allowed.
  • Page 13 Nondirect Vent Installation—Upflow Installations Refer to appropriate tables for proper pipe size, vent length See “Inlet Air Restrictor Plate” in “Venting Requirements.” and the number of elbows allowed. Install the inlet air restrictor plate inside the inlet coupler. Attach a 90° elbow (not supplied) to the inlet coupler. Refer to “Materials”...
  • Page 14 Direct Vent Installation—Horizontal Installations Refer to the appropriate vent table for proper pipe size, vent NOTE: Do not place an additional flue pipe screen in the length and the number of elbows allowed, and air intake intake termination because the air intake may freeze shut. length and the number of elbows allowed.
  • Page 15 Direct Vent—Horizontal (Vertical Venting—Horizontal Right Direct Vent—Horizontal (Vertical Venting—Horizontal Left to Left) to Right) ¹⁄₂ A. 6" (15.2 cm) minimum B. 6 " (16.5 cm) minimum to 24" (61 cm) A. 6" (15.2 cm) minimum to roof. Adjust C. Drain tee (in kit) to roof.
  • Page 16: Connect Venting

    Nondirect Vent—Horizontal (Vertical Venting—Horizontal Nondirect Vent—Horizontal (Vertical Venting—Horizontal Right to Left) Left to Right) A. 6" (15.2 cm) minimum to roof. Adjust height C. Drain tee (in kit) A. 6" (15.2 cm) minimum to roof. Adjust height C. Drain tee (in kit) to expected snow level based on local to expected snow level based on local D.
  • Page 17: Install Condensate Disposal

    Horizontal Right to Left Horizontal Left to Right ¹⁄₂ ¹⁄₂ A. 2" x 2" x " (5.1 cm x 5.1 cm C. 3" (7.6 cm) nipple supplied in kit A. 2" x 2" x " (5.1 cm x 5.1 cm C.
  • Page 18 Horizontal Installation—Left to Right Airflow 3. Insert external trap assembly (supplied in kit) into flue pan. IMPORTANT: The condensate drain should be routed directly to a locally acceptable disposal area. The condensate drain line should not be run directly to the outdoors especially in colder climates where temperatures may cause the condensate to freeze in the drain line.
  • Page 19 Horizontal Installation—Right to Left Airflow 2. Connect the ¹⁄₂" (1.3 cm) NPT plug (supplied in kit) to the opposite side of the internal trap assembly from the NPT plug installed in Step 1. IMPORTANT: The condensate drain should be routed directly to a locally acceptable disposal area.
  • Page 20: Connection To Pressure Switch

    4. Connect a length of ³⁄₄" (1.9 cm) PVC pipe (36" [91.4 cm] 6. From the ³⁄₄" (1.9 cm) PVC tee, connect the drain to the minimum) to the external trap assembly (supplied in kit). disposal area. 5. Install a ³⁄₄" (1.9 cm) PVC tee as shown. NOTE: The top of the PVC tee must be left open for proper condensate drainage.
  • Page 21: Install Ductwork

    Upflow Installation Installation with Return Ducts NOTE: Black hose is factory-connected to the 0.10" W.C. A return air duct system is recommended. If the furnace is pressure switch. Other end of hose must be field-connected to installed in a confined space or closet, a return connection must flue pan.
  • Page 22: Make Electrical Connections

    Make Electrical Connections WARNING WARNING Electrical Shock Hazard Electrical Shock Hazard Disconnect power before servicing. Electrically ground furnace. Replace all parts and panels before operating. Connect ground wire to green ground screw. Failure to do so can result in death or electrical shock. Failure to do so can result in death or electrical shock.
  • Page 23: Check The Furnace Input Rate (If Required)

    At test pressures greater than ¹⁄₂ psig (3.5 kPa), the Pipe-joint compounds suitable for use with Natural and LP furnace and the manual gas shutoff valve must be gas must be used. Do not use Teflon ® tape. disconnected from the gas supply piping system. At test pressures less than or equal to ¹⁄₂...
  • Page 24: Complete Installation

    4. Be sure the gas control has been in the Off position for at 15. Set the room thermostat to the desired temperature least 5 minutes before starting the furnace. necessary to achieve optimum temperature rise. 5. Move the gas control to the ON position. Manifold Pressure vs.
  • Page 25: Shut Down The Furnace

    Adjust Blower Speed 1. Disconnect power. WARNING 2. For heating speed, check the temperature rise and make the necessary adjustments to the blower speed tap. See Wiring Connection Diagram in “Troubleshooting.” 3. Reconnect power. 4. Recheck the temperature rise. Repeat the procedure as necessary to achieve optimum temperature rise.
  • Page 26: Controls

    CONTROLS Pressure Switch(es) Ignition Control Board The pressure switch is a normally open switch that monitors combustion airflow. Inadequate airflow resulting from excessive WARNING venting system restriction or a failed combustion blower will cause the switch to remain open. Rollout Switch(es) The rollout switch(es) are normally closed switch(es) that open when abnormal temperatures exist in the burner area.
  • Page 27: Troubleshooting

    TROUBLESHOOTING Furnace Fails to Operate Properly Failure Codes Review “Sequence of Operation” and visually inspect the The furnace has a built-in, self-diagnostic capability. If a system following before troubleshooting: problem occurs, a failure code is indicated by the LED on the ignition control board.
  • Page 28 Wiring Connection Diagram—Honeywell ® VR 8205 System Line Voltage - Factory Line Voltage - Field Hot Surface Igniter Low Voltage - Factory Low Voltage - Field Interlock Switch Circulation Blower W (Neutral) R (Lo) OR (Med/Lo) BU (Med) Y (Med/Hi) BK (Hi) Induced Draft...
  • Page 29 Wiring Schematic—Honeywell ® VR 8205 System 120 / 1 / 60 Interlock Switch Neutrals Hot Surface Igniter Neutrals Humidifier Neutrals Induced Draft Blower Neutrals Air Cleaner Heat Neutrals Blower Motor Cool Neutrals 120 VAC Transformer 24 VAC Pin 3 Pin 6 If Used Flame Sensor Pin 2...
  • Page 30: Assistance Or Service

    Whirlpool ® Home Cooling and Heating To order accessories ask for the appropriate part number listed 14610 Breakers Drive below or contact your Whirlpool ® Home Cooling and Heating Jacksonville, FL 32258 dealer. Please include a daytime phone number in your correspondence.
  • Page 31 Notes...
  • Page 32 Honeywell is a trademark of Honeywell International, Inc. 47861B008 ®Registered Trademark/TM Trademark of Whirlpool, U.S.A., 3/08 © 2008. All rights reserved. Manufactured under license by Tradewinds Distributing Company, LLC., Coconut Grove, Florida Printed in U.S.A.

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