Repair And Replacement Parts - Whirlpool Gold WFD193 Installation Instructions Manual

93 percent convertible multispeed gas furnace

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Installation instructions manual (52 pages)

Table of Contents

Enlarged version

To remove filters from an external filter rack in an upright upflow

installation, follow the directions provided with external filter rack

kit.

Horizontal Furnace Filter Removal

Filters in horizontal installations are located in the central return

To remove:

1. Disconnect power to the furnace.

2. Remove the filter(s) from the central return register or

ductwork.

3. Replace the filter(s) by reversing the procedure for removal.

4. Reconnect power to the furnace.

Media Air Filter or Electronic Air Cleaner Removal

Follow the manufacturer's directions for service.

Burners

Visually inspect the burner flames periodically during the heating

season. Turn on the furnace at the thermostat and allow several

minutes for flames to stabilize, since any dislodged dust will alter

the flames normal appearance. Flames should be stable, quiet,

soft, and blue (dust may cause orange tips but they must not be

yellow). They should extend directly outward from the burners

without curling, floating, or lifting off. Flames must not impinge on

the sides of the heat exchanger firing tubes.

Induced Draft and Circulator Blowers

The bearings in the induced draft blower and circulator blower

motors are permanently lubricated by the manufacturer. No

further lubrication is required. Check motor windings for

accumulation of dust which may cause overheating. Clean as

necessary.

Condensate Trap and Drain System (Qualified Servicer

Only)

Annually inspect the drain tubes, drain trap, and field-supplied

drain line for proper condensate drainage. Check drain system

for hose connection tightness, blockage, and leaks. Clean or

repair as necessary.

Flame Sensor (Qualified Servicer Only)

Under some conditions, the fuel or air supply can create a nearly

invisible coating on the flame sensor. This coating acts as an

insulator causing a drop in the flame sense signal. If the flame

sense signal drops too low the furnace will not sense flame and

will lock out. The flame sensor should be cleaned by a qualified

servicer using emery cloth or steel wool. Following cleaning, the

flame sense signal should be as indicated in the Specifications

Sheet.

Flue Passages (Qualified Servicer Only)

The heat exchanger flue passageways should be inspected at the

beginning of each heating season. If necessary, clean the

passageways as outlined below.

1. Disconnect power and turn off the gas supply to the furnace.

2. Disconnect the gas line and remove the burner/manifold

assembly by removing the screws securing the assembly to

the partition panel.

3. Disconnect the flue pipe system from the induced draft

blower.

4. Remove the induced draft blower and, drain and pressure tap

hoses from the recuperator coil front cover.

5. Remove the recuperator coil front cover to expose the coil

tubes and turbulators.

6. Remove the recuperator coil turbulators individually by slowly

pulling each turbulator forward firmly.

7. Clean the recuperator coil tubes using a long handle wire

brush, such as a gun cleaning brush.

8. Clean the primary heat exchanger tubes using a wire brush

attached to a length of high grade stainless steel cable, such

as drain cleanout cable. Attach a variable speed reversible

drill to the other end of the cable. Slowly rotate the cable with

the drill and insert it into one of the heat exchanger tubes.

While reversing the drill, work the cable in and out several

times to obtain sufficient cleaning. Repeat for each tube.

9. Clean the residue from the furnace by using a vacuum

cleaner.

10. Replace the parts removed in the previous steps in reverse

order.

11. Turn on electrical power and gas to furnace. Check for leaks

and proper furnace operation.

12. Severe heat exchanger fouling is an indication of an

operational problem. Perform the checks listed in "Start-up

Procedure and Adjustments" to reduce the chances of

repeated fouling.

Bottom Return Removal

1. Disconnect power to the furnace.

2. Remove blower compartment door.

3. Push back and up on the wire filter retainer to release it from

under the front lip of the furnace base pan.

4. Slide the filter forward and out.

5. Replace the filter by reversing the procedure.