Whirlpool WPIO-369B Instruction Manual download pdf (Page 14)

To make electrical connections through the opposite side of the

furnace, the junction box must be relocated to the other side of

the burner or blower compartment prior to making electrical

connections.

To relocate the junction box, follow the steps shown in “Junction

Box Relocation.”

NOTE: Wire routing must not to interfere with circulator blower

operation, filter removal or routine maintenance.

Junction Box Relocation

Line voltage connections can be made through either the right or

left side panel. The furnace is shipped configured for a left side

electrical connection. To make electrical connections through the

opposite side of the furnace, the junction box must be relocated

to the left side prior to making electrical connections. To relocate

the junction box, perform the following steps.

1. Remove both doors from the furnace.

2. Remove and save the screws securing the junction box to the

right side of the furnace.

3. Models that have the junction box located in the burner or

blower compartment will need to move the junction box

directly over.

4. Attach the junction box to the left side of the furnace using

the screws removed in Step 2.

5. Check the location of the wiring. Confirm that it will not be

damaged by heat from the burners or by the rotation of the

fan. Also confirm that wiring location will not interfere with

filter removal or other maintenance.

After the junction box is in the desired location, use washers to

connect field-supplied conduit to the junction box in accordance

with NEC and local codes. Connect hot, neutral, and ground

wires as shown in the furnace wiring diagram. The wires and

ground screw are located in the furnace junction box.

NOTES:

■ In downflow applications, the power leads should be routed

through the supplied wire tabs when locating the junction box

to the left side.

■ Low voltage wires may be connected to the terminal strip.

IMPORTANT: To avoid possible equipment malfunction, route the

low voltage wires to avoid interference with filter removal or other

maintenance.

To ensure proper unit grounding, the ground wire should run from

the furnace ground screw located inside the furnace junction box

all the way back to the electrical panel.

NOTE: Do not use gas piping as an electrical ground.

To confirm proper unit grounding, turn off the electrical power

and perform the following check.

1. Measure the resistance between the neutral (white)

connection and one of the burners.

2. Resistance should measure 10 ohms or less.

This furnace is equipped with a blower door interlock switch

which interrupts the unit voltage when the blower door is opened

for servicing.

NOTE: Do not defeat this switch.

24-Volt Thermostat Wiring

As a 2-stage furnace, the furnace integrated control module

provides terminals for both W1 and W2, and Y1 and Y2

thermostat connections. This allows the furnace to support the

following system applications: 2-stage heating only, 2-stage

heating with single-stage cooling and 2-stage heating with

2-stage cooling. Refer to the following thermostat wiring

diagrams for proper connections to the integrated control

module.

Low voltage connections can be made through either the right or

left side panel. Thermostat wiring entrance holes are located in

the blower compartment. The following illustration shows the

connections for a heat/cool system.

This furnace is equipped with a 40 VA transformer to facilitate use

with most cooling equipment. Consult the wiring diagram located

on the blower compartment door for further details of 115-volt

and 24-volt wiring.

Goodman 56

Edges of sheet metal holes may be sharp. Use gloves as

a precaution when removing hole plugs.

WARNING

Goodman 116

To prevent personal injury or death due to electric shock,

disconnect electrical power before installing or servicing

this unit.

WARNING

Goodman 60

HIGH VOLTAGE!

WARNING

To avoid the risk of injury, electrical shock

or death, the furnace must be electrically

grounded in accordance with local codes or

in their absence, with the latest edition of the

National Electric Code (NEC).

Important Note

Wire routing must not interfere with circulator blower

operation, filter removal or routine maintenance. A removable

plug connector is provided with the control to make

thermostat wire connections. This plug may be removed to

allow wire connections to be made to the plug and then

replaced. It is STRONGLY recommended that multiple wires

into a single terminal be twisted together prior to inserting

into the plug connector. Failure to do so may result in

intermittent operation.

IMPORTANT NOTE

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Whirlpool WPIO-369B Instruction Manual Page 14

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