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2)
LOCATION
WARNING
This furnace is not watertight and is not
designed for outdoor installation.
furnace shall be installed in such a manner
as to protect the electrical components from
water. Outdoor installation would lead to a
hazardous
electrical
premature furnace failure.
CAUTION
For an attic installation it is important to keep
insulation 12" or more away from any furnace
openings. Some types of insulating materials
may be combustible.
This furnace is approved for reduced clearances to
combustible
construction,
installed be a closet or similar enclosure. As this unit
may be installed as an upflow, counterflow, or
horizontal furnace, it may be located in a basement,
on the same level as the area to be heated,
suspended, or in a crawlspace. In any case, the unit
should always be installed level.
In a basement, or when installed on the floor (as in a
crawlspace), it is recommended that the unit be
installed on a concrete pad that is 1" to 2" thick.
When installed in the counterflow position, this
furnace must not be installed on combustible flooring,
unless the approved sub-base is used (Model # DFB-
101). Since the flue pipe is in counterflow position, be
sure that the clearances from the flue pipe to
combustible construction are maintained. Also, it is
recommended to use the flue pipe protection kit FPG-
101 or FPG-102.
Refer to the figure #1 and the
installation instructions included with the protection kit.
FIGURE # 1
DNS-0278 REV. A
4
This
condition
and
to
therefore,
it
may
be
When installed in a horizontal position, the furnace
may be suspended by using an angle iron frame, as
long as the total weight of both the furnace and the
frame are allowed for in the support calculations.
(Other methods of suspending are acceptable.) When
installed in the Horizontal Position, this furnace must
not be installed on combustible flooring, unless the
approved sub-base is used (Model # HFB-101).
The required minimum clearances for this furnace
in all positions are specified in tables # 5.1 and #
5.2.
The furnace should be located as close as possible to
the chimney or vent in order to keep vent connections
shorts and direct. The furnace should also be located
as near as possible to the center of the air distribution
system.
2.1)
Air for combustion and ventilation:
Chimney and SCS installation
Refer to the CAN/CSA-B139 installation code for
complete regulations and for guidance on retrofit
applications.
This furnace should be installed in a location in which
the
facilities
for
ventilation
combustion of oil, proper venting and the maintenance
of ambient temperature at safe limits under normal
conditions of use. The location should not interfere
with proper circulation of air within the confined space.
In addition to air needed for combustion, process air
shall be provided as required for: cooling of equipment
or material, controlling dew point, heating, drying,
oxidation or dilution, safety exhaust and odor control.
In addition to air needed for combustion, air shall be
supplied for ventilation, including all air required for
comfort and proper working conditions for personnel.
When this furnace is installed in a closet or enclosure,
two
(2)
ventilation
openings
combustion air.
The openings should be located
about 6" from the top and the bottom of the enclosure
at the front of the furnace. Table # 1 indicates the
minimum ventilation openings dimensions required.
TABLE # 1
Input
Length
(MBTUH)
75 – 105
120 - 155
permit
satisfactory
are
required
Height
(in.)
(in.)
18
8
20
10
for
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