Whirlpool WGFD293 Instruction Manual download pdf (Page 6)

LOCATION REQUIREMENTS AND CONSIDERATIONS

Follow the instructions listed below when selecting a furnace

location. Refer also to the guidelines provided in “Combustion

and Ventilation Air Requirements.”

■ Centrally locate the furnace with respect to the proposed or

existing air distribution system.

■ Check that the temperature of the return air entering the

furnace is between 55°F and 100°F (12.8ºC and 37.8ºC) when

the furnace is heating.

■ Provide provisions for venting combustion products outdoors

through a proper venting system. Special consideration

should be given to the vent/flue pipe routing and the

combustion air intake pipe when applicable. Refer to

“Termination Locations” in “Vent/Flue Pipe and Combustion

Air Pipe” for appropriate termination locations and to

determine if the piping system from the furnace to the

termination can be accomplished within the guidelines given.

NOTE: The length of flue and/or combustion air piping can be

a limiting factor in the location of the furnace.

■ Locate the furnace so that the condensate flows downward

to the drain.

NOTE: Do not locate the furnace or its condensate drainage

system in any area subject to below freezing temperatures

without the proper freeze protection. Refer to “Condensate

Drain Lines and Trap” for further details.

■ Check that adequate combustion air is available for the

furnace. Improper or insufficient combustion air can expose

building occupants to gas combustion products that could

include carbon monoxide. Refer to “Combustion and

Ventilation Air Requirements.”

■ Set the furnace on a level floor to enable proper condensate

drainage. If the floor becomes wet or damp at times, place

the furnace above the floor on a concrete base sized

approximately 1¹⁄₂" (3.8 cm) larger than the base of the

furnace. Refer to “Horizontal Applications and

Considerations” for leveling of horizontal furnaces.

■ Check that the upflow or horizontal furnaces are not installed

directly on carpeting, or any other combustible material.

NOTE: The only combustible material allowed is wood.

■ A special accessory subbase must be used for the upright

counterflow unit installations over any combustible material

(including wood). Refer to subbase instructions for installation

details.

NOTE: A subbase will not be required if an air conditioning

coil is located beneath the furnace between the supply air

opening and the combustible floor.

■ Exposure to contaminated combustion air will result in safety

and performance-related problems.

NOTE: Do not install the furnace where the combustion air is

exposed to the following substances:

Chlorinated waxes or cleaners

Chlorine-based swimming pool chemicals

Water softening chemicals

Deicing salts or chemicals

Carbon tetrachloride

Halogen-type refrigerants

Cleaning solutions (such as perchloroethylene)

Printing inks

Paint removers

Varnishes

Hydrochloric acid

Cements and glues

Antistatic fabric softeners for clothes dryers

Masonry acid washing materials

■ Seal off a nondirect vent furnace if it is installed near an area

frequently contaminated by any of the above substances.

This protects the nondirect vent furnace from airborne

contaminants. To ensure that the enclosed nondirect vent

furnace has an adequate supply of combustion air, vent from

a nearby uncontaminated room or from outdoors. Refer to

“Combustion and Ventilation Air Requirements” for details.

■ If the furnace is used in connection with a cooling coil unit,

install the furnace upstream or in parallel with the cooling coil

unit. Premature heat exchanger failure will result if the cooling

coil unit is placed ahead of the furnace.

■ If the furnace is installed in a residential garage, position the

furnace so that the burners and ignition source are located

not less than 18" (45.7 cm) above the floor. Protect the

furnace from physical damage by vehicles.

■ If the furnace is installed horizontally, ensure the furnace

access doors are not on the “up/top” or “down/bottom” side

of the furnace.

■ Do not connect the furnace to a chimney flue that serves a

separate appliance designed to burn solid fuel.

■ On counterflow installations, the air conditioning coil must be

downstream on the supply (positive) side of the furnace heat

exchanger.

Counterflow Installation Over a Noncombustible Floor

■ Before setting the furnace over the plenum opening, ensure

that the surface around the opening is smooth and level. A

tight seal should be made between the furnace base and

floor by using a silicone rubber caulking compound or

cement grout.

Counterflow Installation Over a Combustible Floor

■

If installation over a combustible floor becomes necessary, use

an accessory subbase (see Specification Sheet applicable for

your model for details). A special accessory subbase must be

used for upright counterflow unit installations over any

combustible material including wood. Refer to subbase

instructions for installation details. Follow the instructions with

the subbase for proper installation.

NOTES:

■ Do not install the furnace directly on carpeting, tile or

other combustible material other than wood flooring.

■ The subbase will not be required if an air conditioning coil

is installed between the supply air opening on the furnace

and the floor.

Goodman 50

To prevent possible equipment damage, property damage,

personal injury or death, the following bullet points must

be observed when installing the unit.

WARNING

Goodman 48

Possible property damage, personal injury or death due

to fire, explosion, smoke, soot, condensation, electrical

shock or carbon monoxide may result from improper

installation, repair, operation or maintenance of this

product.

WARNING

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Whirlpool WGFD293 Instruction Manual Page 6

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