4 18-CD35D1-1
INSTALLER’S GUIDE
LOCATION 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 vent and as centralized
for heat distribution as practical?
2. Do all clearances between the furnace and enclosure
equal or exceed the minimums shown in the Table 1.
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 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" minimum above
the highest snow accumulation level (18" in Canadian
applications)?
6. Allow sufficient height in supply plenum above or below
the furnace to provide for cooling coil installation if the
cooling coil is not installed at the time of this furnace
installation.
7. A furnace shall be installed so electrical components are
protected from water.
8. If the furnace is installed in a residential garage, it must
be installed so that the burners and the ignition source are
located not less than 18 inches (46 cm) above the floor
and the furnace must be located or protected to avoid
physical damage from vehicles.
IMPORTANT: The furnace must be installed
level. The only allowable variation would be
slightly to the left and/or forward in upflow
installations or slightly toward the front in
horizontal installations. This is necessary for
proper condensate drainage.
NOTE: On upflow 5 ton airflow models where the
airflow requirement exceeds 1800 CFM - Models
will require return air openings and filters on: (1)
both sides; or (2) one side and the bottom; or (3)
just the bottom.
▲
CAUTION
!
To prevent shortening its service life, the furnace
should not be used as a “Construction Heater”
during the finishing phases of construction
until the requirements listed in item 9, a-g of the
safety section of this publication have been met.
Condensate in the presence of chlorides and
fluorides from paint, varnish, stains, adhesives,
cleaning compounds, and cement create a
corrosive condition which may cause rapid
deterioration of the heat exchanger.
▲
CAUTION
!
Do NOT install the furnace in a corrosive or
contaminated atmosphere.
▲
WARNING
!
EXPLOSION HAZARD!
PROPANE GAS IS HEAVIER THAN AIR AND MAY
COLLECT IN ANY LOW AREAS OR CONFINED
SPACES. IN ADDITION, ODORANT FADE MAY
MAKE THE GAS UNDETECTABLE EXCEPT WITH
A WARNING DEVICE. IF THE GAS FURNACE IS
INSTALLED IN A BASEMENT, AN EXCAVATED
AREA OR A CONFINED SPACE, IT IS STRONGLY
RECOMMENDED TO CONTACT A GAS SUPPLIER
TO INSTALL A GAS DETECTING WARNING
DEVICE IN CASE OF A GAS LEAK.
NOTE: The manufacturer of your furnace does not
test any detectors and makes no representations
regarding any brand or type of detector
