6
General
These furnaces are shipped with materials to assist in proper
furnace installation. These materials are shipped in the main
blower compartment. See Table 1 for loose parts bag contents.
This furnace must:
S
be installed so the electrical components are protected from
water.
S
not be installed directly on any combustible material other than
wood flooring (refer to
SAFETY CONSIDERATIONS
).
S
be located close to the chimney or vent and attached to an air
distribution system. Refer to Air Ducts section.
S
be provided ample space for servicing and cleaning. Always
comply with minimum fire protection clearances shown in
Table
2 or on the furnace clearance to combustible construction
label.
CARBON MONOXIDE POISONING / COMPONENT
DAMAGE HAZARD
Failure to follow this warning could result in personal injury
or death and unit component damage.
Corrosive or contaminated air may cause failure of parts
containing flue gas, which could leak into the living space.
Air for combustion must not be contaminated by halogen
compounds, which include fluoride, chloride, bromide, and
iodide. These elements can corrode heat exchangers and
shorten furnace life. Air contaminants are found in aerosol
sprays, detergents, bleaches, cleaning solvents, salts, air
fresheners, and other household products. Do not install
furnace in a corrosive or contaminated atmosphere. Make
sure all combustion and circulating air requirements are met,
in addition to all local codes and ordinances.
!
WARNING
The following types of furnace installations may require
OUTDOOR AIR
for combustion due to chemical exposures:
S
Commercial buildings
S
Buildings with indoor pools
S
Laundry rooms
S
Hobby or craft rooms
S
Chemical storage areas
If air is exposed to the following substances, it should not be used
for combustion air, and outdoor air may be required for
combustion:
S
Permanent wave solutions
S
Chlorinated waxes and cleaners
S
Chlorine based swimming pool chemicals
S
Water softening chemicals
S
De--icing salts or chemicals
S
Carbon tetrachloride
S
Halogen type refrigerants
S
Cleaning solvents (such as perchloroethylene)
S
Printing inks, paint removers, varnishes, etc.
S
Hydrochloric acid
S
Cements and glues
S
Antistatic fabric softeners for clothes dryers
S
Masonry acid washing materials
All fuel--burning equipment must be supplied with air for fuel
combustion. Sufficient air must be provided to avoid negative
pressure in the equipment room or space. A positive seal must be
made between the furnace cabinet and the return--air duct to
prevent pulling air from the burner area.
FIRE, INJURY OR DEATH HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
When the furnace is installed in a residential garage, the
burners and ignition sources must be located at least 18 in.
(457 mm) above the floor. The furnace must be located or
protected to avoid damage by vehicles. When the furnace is
installed in a public garage, airplane hangar, or other
building having a hazardous atmosphere, the furnace must
be installed in accordance with the NFPA 54/ANSI
Z223.1--2012 or CAN/CSA B149.2--2010. See Fig. 5.
!
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
Do not install the furnace on its back or hang furnace with
control compartment facing downward. Safety control
operation will be adversely affected. Never connect
return--air ducts to the back of the furnace. See Fig. 4.
!
WARNING
Location Relative to Cooling Equipment
The cooling coil must be installed parallel with, or on the
downstream side of the unit to avoid condensation in the heat
exchangers. When installed parallel with the furnace, dampers or
other flow control must prevent chilled air from entering the
furnace. If the dampers are manually operated, they must be
equipped with means to prevent operation of either unit unless the
damper is in the full--heat or full--cool position.
987MA
