CAC / BDP CBMAAA060120, Installation Instructions Manual

Page: 5 / 52

5
2.4 LOCATION
CAUTION
This furnace is not watertight and is not designed for
outdoor installation. This furnace shall be installed in
such a manner as to protect the electrical components
from water. Outdoor installation will lead to hazardous
electrical conditions and to premature furnace failure.
CAUTION
If this furnace is installed in an attic, it is important to
keep insulation at least 0.3 m (12") away from any
furnace openings. Some types of insulating material
may be combustible.
The unit must be installed in a location where the ambient
and return air temperature is over 15°C (60°F).
This furnace is approved for reduced clearances to
combustible construction. Therefore, it may be installed in a
closet or similar enclosure. As this unit may be installed as
an upflow, counter flow, 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 2.5 cm to 5.0 cm (1" to 2") thick.
When installed in the counter flow position, this furnace
must not be installed on combustible flooring, unless the
approved sub-base is used (Model # KLASB0601DET).
Since the flue pipe is in counter flow 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 KLADC0101DET or
KLADC0201DET. Please refer to the Figure 1 and the
installation instructions included with the kit.
Figure 1 : Counterflow position, flue pipe protection
When installed in an 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 included in the
calculations. Other methods of suspension 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 KLASB0701DET).
The required minimum clearances for this furnace in all
positions are specified in Tables 7 and 8.
The furnace should be located as closely as possible to the
chimney or vent in order to keep vent connections short and
direct. The furnace should also be located near the centre of
the air distribution system.
2.4.1
Air for combustion and ventilation
This furnace should be installed in a location in which the
facilities for ventilation permit satisfactory combustion of oil,
proper
venting and the maintenance of ambient
temperatures at safe limits under normal conditions of use.
The location should not interfere with the proper circulation
of air within the confined space. Refer to the CAN/CSA-
B139 installation code for complete regulations, and for
guidance on retrofit applications.
When this furnace is installed in a closet or similar
enclosure, 2 ventilation openings are required for
combustion air. The openings should be located about 15.2
cm (6") from the top and the bottom of the enclosure at the
front of the furnace. Table 1 indicates the minimum
dimensions required for each of these two ventilation
openings.
Table 1 : Minimum dimensions required in ventilation
openings
Input
(BTU/h)
Width Height
75,000 – 105,000 45.72 cm (18") 20.32 cm (8")
120,000 – 155,000 50.80 cm (20") 25.40 cm (10")
WARNING
Do not block the combustion air openings in the
furnace.
Any blockage will result in improper
combustion and may result in a fire hazard and/or cause
bodily harm.
The barometric draft regulator included with the furnace,
shall be installed in the same room or enclosure as the
furnace, in such a manner as to prevent any difference in
pressure between the regulator and the combustion air
supply.
Air requirements for the operation of exhaust fans, kitchen
ventilation systems, clothes dryers, and fireplaces shall be
considered in determining the adequacy of the space to
provide combustion air requirements.
In unconfined spaces, in buildings of conventional frame,
brick or stone construction, infiltration may be adequate to
provide air for combustion, ventilation and dilution of flue
gases. This determination must be made on an individual
installation basis and must take into consideration the
overall volume of the unconfined space, the number of
windows and ventilation openings, the number of doors to
DNS-0278 Rev. A
KLADC0101DET/
KLADC0201DET