10
18-CE04D1-1B-EN
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Locations and Clearances
The location of the Furnace is normally selected by the
architect, the builder, or the installer. However, before
the Furnace is moved into place, be sure to consider
the following requirements:
1. Is the location selected as near the chimney or vent
and as centralized for heat distribution as practical?
2. Do all clearances between the Furnace and
enclosure equal or exceed the minimums stated in
Clearance Table below?
Minimum clearance to combustible materials
3. Is there sufficient space for servicing the Furnace
and other equipment? A minimum of 24 inches
front accessibility to the Furnace must be provided.
Any access door or panel must permit removal of
the largest component.
4. Are there at least 3 inches of clearance between the
Furnace combustion air openings in the front panel
and any closed panel or door provided?
5. Are the ventilation and combustion air openings
large enough and will they remain unobstructed? If
outside air is used, are the openings set 12" above
the highest snow accumulation level?
6. Allow sufficient height in supply plenum above the
Furnace to provide for cooling coil installation, if
the cooling coil is not installed at the time of this
Furnace installation.
7. The Furnace shall be installed so electrical
components are protected from water.
8. If the Furnace is installed in a garage, it must be
installed so that the burners, and the ignition
source are located not less than 18 inches above the
floor and the Furnace must be located or protected
to avoid physical damage from vehicles.
9. The gas furnace must not be located where
excessive exposure to contaminated combustion
air will result in safety and performance related
problems. Avoid the following known
contaminants:
a. Permanent wave solutions
b. Chlorinated waxes and cleaners
c. Chlorine based swimming pool chemicals
d. Water softening chemicals
e. De-icing salts or chemicals
f. Carbon tetrachloride
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