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VARIABLE SPEED ELECTRIC FURNACE

INSTALLATION INSTRUCTIONS

VARIABLE SPEED ELECTRIC FURNACE SAFETY

Table of Contents

VARIABLE SPEED ELECTRIC FURNACE SAFETY.....................1

INSTALLATION REQUIREMENTS................................................2

Tools and Parts ............................................................................2

Location Requirements................................................................2

Installation Configurations ...........................................................3

Electrical Requirements ...............................................................4

Duct Work Requirements.............................................................4

INSTALLATION INSTRUCTIONS..................................................4

Inspect Shipment .........................................................................4

Install Duct Work..........................................................................5

Filter Specifications......................................................................5

Make Electrical Connections .......................................................5

Complete Installation..................................................................10

SEQUENCE OF OPERATION ......................................................12

ELECTRIC FURNACE MAINTENANCE......................................13

ASSISTANCE OR SERVICE.........................................................13

Accessories ................................................................................13

WARRANTY ..................................................................................14

065682600

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.

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.

Your safety and the safety of others are very important.

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:

Summary of content (16 pages)

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VARIABLE SPEED ELECTRIC FURNACE INSTALLATION INSTRUCTIONS Table of Contents VARIABLE SPEED ELECTRIC FURNACE SAFETY.....................1 INSTALLATION REQUIREMENTS ................................................2 Tools and Parts ............................................................................2 Location Requirements................................................................2 Installation Configurations ...........................................................3 Electrical Requirements .....
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INSTALLATION REQUIREMENTS These instructions are intended to be a general guide and do not supersede any local or national codes. Installation must conform with the local building codes and with the latest editions of the National Electric Code. Read the entire instruction manual before starting the installation. All models are designed for indoor installations only.
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Installation Configuration Options Installation Configurations For ease in installation, it is best to make any necessary coil configuration changes before setting the electric furnace in place. See “Installation Configuration Options.” NOTE: Typical installations with optional WME modular evaporator coil are shown. Counterflow Vertical Installations Upflow/Counterflow The electric furnace must be supported on the bottom only and set on solid floor or field supplied supporting frame.
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Electrical Requirements WARNING Duct Work Requirements ■ Install the conditioned air plenum, ducts and air filters (not provided) in accordance with NFPA 90B Standard for the Installation of Warm Air Heating and Air-Conditioning Systems (latest edition). ■ The electric furnace is provided with flanges for the connection of the plenum and ducts. ■ Air filters must be listed as Class 2 furnace air filters.
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Minimum Filter Requirements Chart Install Duct Work Nominal Tons Air Conditioning & Nominal Airflow IMPORTANT: ■ Install duct work in accordance with NFPA 90B and any local codes. ■ ■ Connect supply air duct to the flange on top of the electric furnace. If an isolation connector is used, it must be nonflammable. If the free area is not known, assume a 25% free area for wood or a 75% free area for metal louvers or grilles.
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4. Using UL listed wire nuts, connect the field supply wires to the electric furnace (black to black and yellow to yellow). 208 Volt Conversion WARNING Electrical Shock Hazard Disconnect all power supplies before servicing. WARNING Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. 1. Disconnect all power supplies. 2. Remove the blower access panel. 3.
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Low Voltage Connections Cooling Application WEFV Electric Furnace R Y W G GRN WHT BLK RED ORG YEL BLU To Compressor Contactor Make this connection only if electric heat is used.
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Electric Heat Only R W WEFV Electric Furnace G GRN WHT BLK RED ORG Connections for Staged Electric Heat W1 W2 BLK WHT Blower Only R WEFV Electric Furnace G GRN RED ORG 8
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Wiring Diagram - Blower COM 8 18 BLK 7 18 BRN 6 18 WHT 5 18 GRN 18 RED GND 12-PIN PLUG 2 18 BLU 4 3 14 YEL L2 14 BLK L1 1 CONTROL BOARD 24V HUM R C1 EM W1 O Y2 Y1 G 18 BLU 208V 18 RED 240V TRANS 24V 18 RED 18 BLUE 18 BLK 18 WHT 18 ORG TO THERMOSTAT 18 YEL 18 GRN 16-PIN PLUG & CAP 18 BRN (16) 16-PIN PLUG & CAP 18 BLK 18 YEL 18 GRN GND LINE VOLTAGE LINE VOLTAGE LOW VOLTAGE LOW VOLTAGE 5 4 3 MOTOR 5-PIN 5-PIN PLUG CAP FACTORY FIELD FACTORY FIELD 9
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■ Is unit properly located, level, secure, and serviceable? ■ Is the wiring neat, correct, and to the wiring diagram? ■ Is the unit properly grounded and protected (fused)? ■ Is the thermostat correctly wired, level, and in a good location? 3. Set the HEAT and COOL taps by moving the board jumpers to the A, B, C, or D positions (see Motor Board Taps and Dehumidify Resistor) based on the information found in the Application Table.
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Application Table Control Board Taps Thermostat Terminals X = Energized Terminal Model Mode A HUM EM W1 O Y2/Y1 Cont. Blower Cooling WEFV08S -1A ** X Heating X Emer. Heat*** X Aux. Heat*** X Emer. Heat*** X 1000 800 700 600 X 1000 800 700 600 WEFV14M-1A Aux. Heat*** X Emer. Heat*** X 800 700 600* *** *** *** *** 1000 800 700 600* 600 500 400 350 X 1200 1000 800 600 X 1200 1000 800 600 WEFV16M-1A Aux. Heat*** X Emer. Heat*** X WEFV20L-1A Aux.
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SEQUENCE OF OPERATION Cooling (cooling only or heat pump) When the thermostat calls for cooling, the circuit between R and G is completed, and the blower relay is energized. The Normally Open contacts close, causing the indoor blower motor to operate. The circuit between R and Y is also completed; this circuit closes the contactor in the outdoor unit starting the compressor and outdoor fan motor. Circuit R and O energizes the reversing valve, switching it to the cooling position.
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ELECTRIC FURNACE MAINTENANCE IMPORTANT: Do not operate system without a filter. A filter is required to protect the coil, blower, and internal parts from excessive dirt and dust. ■ Inspect air filters at least once a month and replace or clean as required. Dirty filters are the most common cause of inadequate heating or cooling performance. ■ Replace disposable filters. Cleanable filters can be cleaned by soaking in mild detergent and rinsing with cold water.
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Keep this book and your sales slip together for future reference. You must provide proof of purchase or installation date for in-warranty service. Write down the following information about your furnace to better help you obtain assistance or service if you ever need it. You will need to know the complete model and serial number. You can find this information on the front panel.
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065682600 © 2003. All rights reserved. ®/TM Whirlpool and all other trademarks are owned by Whirlpool, U.S.A., used under license by Tradewinds Distributing Company, LLC. 7/03 Printed in U.S.A.