88
WARNING
To prevent possible death, personal injury, equipment damage, or property damage the following bullet points must
be observed when installing the unit.
Location Requirements and Considerations
General Information
Follow the instructions listed below when selecting a furnace location. Refer also to the guidelines provided in the
section
Combustion and Ventilation Air Requirements.
•
Centrally locate the furnace with respect to the
proposed or existing air distribution system.
•
Ensure the temperature of the return air entering the
furnace is between 55°F and 100°F when the fur-
nace is heating.
•
Provisions must be made for venting combustion
products outdoors through a proper venting system.
The length of flue pipe could be a limiting factor in
locating the furnace.
•
Ensure adequate combustion air is available for the
furnace. Improper or insufficient combustion air can
expose building occupants to gas combustion prod-
ucts that could include carbon monoxide. Refer to
Condensate Drain Lines and Trap
for further details.
•
The furnace must be level. If the furnace is to be set
on a floor that may become wet or damp at times, the
furnace should be supported above the floor on a
concrete base sized approximately 1-1/2" larger
than the base of the furnace.
•
Ensure upflow or horizontal furnaces are not in-
stalled directly on carpeting, or any other combus-
tible material. The only combustible material al-
lowed is wood.
•
Exposure to contaminated combustion air will result
in safety and performance-related problems. Do not
install the furnace where the combustion air is ex-
posed 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
and masonry acid washing materials
•
If the furnace is used in connection with a cooling
unit, install the furnace upstream or in parallel with
the cooling unit. Premature heat exchanger failure
will result if the cooling 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 inches (457 mm)
above the floor. Protect the furnace from physical
damage by vehicles.
•
If the furnace is installed horizontally, the furnace
access doors must be vertical so that the burners fire
horizontally into the heat exchanger. Do not install
the unit with the access doors on the “up/top” or
“down/bottom” side of the furnace.
•
Do not connect this furnace to a chimney flue that
serves a separate appliance designed to burn solid
fuel.
C
LEARANCES
AND
A
CCESSIBILITY
Installations must adhere to the clearances to combustible materials
which this furnace has been design certified to.
Allow clearances from the enclosure as shown on Specification Sheet for
fire protection, proper operation, and service access. These clearances
must be permanently maintained. The combustion and ventilating air
openings in the front and top panels of the furnace must never be
obstructed.
