ICP AMP105-IE2, Installation Instructions And Homeowner'S Manual

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5
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 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 # 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 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.
1.3.1) 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 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.
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 152.4 mm (6
")
from the
top and the bottom of the enclosure at the front of the
furnace. Table 1 indicates the minimum dimensions required
for these ventilation openings.
TABLE 1
Input
(BTU/h)
Width Height
75,000 – 105,000 0.46 m (18") 0.20 m (8")
120,000 – 155,000 0.51 m (20") 0.25 m (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.
Chimney installation only
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 the outside,
internal doors which can close off the unconfined space and
the overall air tightness of the building construction.
Many new buildings and homes (and older ones that have
been weatherized must be considered as being tight
construction and, therefore, infiltration will not be sufficient to
supply the necessary air for combustion and ventilation.
A building can be considered as being of tight construction
when:
a. Walls and ceilings exposed to the outside have a
continuous water vapour retarder with a rating of one
perm or less, openings have gaskets or are sealed
and/or;
b. Weather-stripping has been added on operable windows
and doors, and/or;
c. Caulking or sealant has been applied to areas such as
joints around window and doorframes, between sole
plates and floors, between wall-ceiling joints, between
wall panels, at penetrations for plumbing, electrical and
fuel lines and at other openings.
1.3.2) Duct recommendations
The proper sizing of warm air ducts is necessary to ensure
satisfactory furnace operation. Ductwork should be in
accordance with the latest editions of NFPA-90A (Installation
of Air Conditioning and Ventilating Systems) and NFPA-90B
(Warm Air Heating and Air Conditioning Systems) or
Canadian equivalent.
The supply ductwork should be attached to the flanged
opening provided at the discharge end of the furnace. See
Figures 11.1 and 11.2 for the dimensions of this opening.
Knockouts are provided on both sides of the furnace to cut
the required size of opening for the installation of the return
air ductwork. This can be done on either the right or the left
side of the furnace. See Table 2 (page 10) for location and
dimensions.
NOTE: THE BACK SHOULD NOT BE CUT OUT FOR
RETURN AIR DUCTING
Also, there is provision on this furnace for a bottom return air
duct. Knockouts are provided in the floor of the furnace to
facilitate the cut-out requirement for the air filter rack and
return ductwork. (We recommend the use of this opening for
horizontal and counterflow installations).