5
FIGURE 2
Installation of accessories supplied with the unit
4.2) Minimum clearances
The following clearances from combustible materials
must be respected:
Top: 0.2 m
9"
Sides: 0.6 m
24"
Flue-pipe: 0.2 m
9"
Front: 1.2 m
48"
Rear: 0.2 m
9"
Floor: Non combustible
Consider the above when planning for additional
clearances for maintenance.
4.3) Motorized damper clearances
(when used)
A minimum clearance of 152.4 mm (6") between the
motorized damper and combustible materials shall be
maintained at all times. Furthermore, there must be
adequate provision for service access to the damper
.
5) COMBUSTION AIR SUPPLY
The unit location must provide sufficient fresh air for
proper combustion. Consult the appropriate sections of
the CAN/CGA B149 code for more details. When the
unit is located in an enclosed area, such as a boiler
room, where outside air cannot be supplied, 2 fresh air
openings must be provided. One must be located 0.1 m
to 0.5 m (6" to 18") from the floor, the other as close as
possible to the ceiling. Consult the CAN/CGA B149
Code.
6) GAS SUPPLY AND PIPING
Gas piping must be installed in accordance with
CAN/CGA B149 and local regulations. Table 1 gives the
minimum pipe diameters for each model. Please note
that the low pressure gas piping must never be smaller
in diameter than the gas valve inlet. A manual cut-off
valve must be installed as closely as possible to the
appliance.
DNS 0295 Rev. B
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