Dettson AMT100B34-IM2, Руководство по установке

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1.3) GENERAL
This furnace is a Low-Boy unit and may be operated in an upflow
configuration only.
It is shipped as a packaged unit, complete with burner and controls. It
requires a line voltage (115 VAC) connection to the control box, a
thermostat hook-up as shown on the wiring diagram, oil line
connection(s), suitable ductwork, and connection to a properly sized
vent.
The air handling capacity of this furnace is also designed for cooling.
Refer to Table 5 for the expected airflow at various external duct static
pressures, based on the model selected.
1.4) POSITIONING THE FURNACE
The unit must be installed in a location where the ambient and return
air temperatures are above 15°C (60°F).
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.
This furnace is approved for reduced clearances to combustible
construction; therefore, it may be installed in a closet or similar
enclosure. This unit may be located in a basement or on the same
level as the area to be heated. Whichever the case, the unit must
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 2.54
to 5.08 cm (1 to 2
"
) thick.
The required minimum clearances for this furnace are specified in
Table 6
The furnace should be positioned as closely as possible to the
chimney or vent in order to keep vent connections short and direct. It
should also be as close as possible to the centre of the air distribution
system.
1.4.1) Air for combustion and ventilation
Refer to the CAN/CSA-B139 installation code for complete regulations,
and for guidance on retrofit applications.
This furnace must be installed in a location that provides sufficient air
for proper combustion, appropriate venting and the maintenance of an
ambient temperature at safe limits under normal conditions of use. The
location should not interfere with proper circulation of air within the
confined space.
When this furnace is installed in a closet or enclosure, 2 ventilation
openings are required for combustion air. The openings should be
located about 15.24 cm (6
") from the top and the bottom of the
enclosure at the front of the furnace. Table 1 indicates the minimum
ventilation opening dimensions required.
Table 1: Minimum ventilation openings dimensions
required in a closet or enclosure
Input
(BTU/h)
Width Height
75,000 – 105,000 0.4 mm (16
"
) 0.20 mm (8
"
)
120,000 – 155,000 0.5 mm (20 " ) 0.25 mm (10 " )
CAUTION
Do not block the combustion air openings in the
furnace. Any blockage will result in improper com-
bustion and may result in a fire hazard and/or
cause bodily harm.
Chimney installation only
The barometric draft regulator 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 the required
combustion air.
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 tightness of
the building construction.
Many new buildings and homes (even older ones that have been
weatherized) must be considered as being of 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, with
openings hermetically sealed and/or;
b. Weather-stripping has been added on operable windows and
doors, and/or;
c. Caulking or sealant have been applied to areas such as joints
around window and door frames, between sole plates and floors,
between wall-ceiling joints, between wall panels, at penetrations
for plumbing, electrical and fuel lines and at other openings.
If combustion and ventilation air must be supplied to an unconfined
space from the outside, an opening with a free area of not less than
6.45 cm
2
(one inch
2
) per 1,000 BTU per hour of total input of all
appliances within the unconfined space, but not less than 645.16 cm
2
(100 inches
2
) must be provided. This opening must be located such a
way that it cannot be blocked in any way, at any time.