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3.6 OUTSIDE AIR
It is mandatory to install an outside air connection to the BIS Tradition. The following
components are required and are included with the fireplace:
- Outside air kit
- 4" adapter for fireplace connection
The outside air assembly must be installed according to the following requirements :
A) Duct length should be kept to a minimum. The maximum length of a 4" interior
diameter (100 mm) insulated flexible duct is 20 ft. (6.1 m). The duct can be extended
to a maximum of 40 ft. (12 m) using a 6" interior diameter (150 mm) insulated flexible
duct (See note below).
B) The air intake register must not be installed more than 10 ft. (3050 mm) above the
base of the fireplace.
C) The fresh air must come from outside the house. The air intake must not draw air
from the attic, basement or garage.
D) The air intake should be installed where it is not likely to be blocked by snow or
exposed to extreme wind and away from automobile exhaust fumes, gas meters and
other vents.
E) The duct and register may be installed above or below floor level.
Make a 4 _" (110 mm) hole in the outside wall of the house at the chosen location. From
outside, place the outside air register in the hole (open side down) and fasten the register to
the wall with screws as shown (see figure 24). Slip the pipe into the insulated sleeve. Place
the insulated pipe over the register tube and over the fireplace’s outside air connector (see
figure 25). At each end, carefully pull back the insulation and plastic cover exposing the
flexible pipe. Using the aluminium tape provided, wrap the tape around the joint between
the flexible pipe and the air inlets. Carefully push the insulation and plastic cover back over
the pipe. Using aluminium tape, fasten the plastic cover in place.
NOTE: We recommend not to exceed 20 feet of 4” flexible pipe. If you require a longer
length we recommend that you use a 5” diameter flexible pipe for the complete run up to 30
feet and a 6” diameter pipe for a run of up to 40 feet.
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