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Location Requirements And Considerations - Whirlpool WGFD293 Installation Instructions Manual

93% and 95% 2-stage variable speed gas furnace
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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."
WARNING
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
Possible property damage, personal injury or death due
Goodman 48
to fire, explosion, smoke, soot, condensation, electrical
shock or carbon monoxide may result from improper
installation, repair, operation or maintenance of this
product.
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.
6
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.

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