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3.5.2 Central Forced Air Kit (Not tested under EPA certification)
The knock-outs provided on the back and on the sides of the BIS ULTIMA allow the
connection of insulated flexible pipe which enables you to heat adjacent rooms up to 50 feet
from the fireplace.
The ducting system must be installed as described below :
A) Fix the adaptor at the back and/or the side of the fireplace by twist-locking the adaptor to
the fireplace. You can use more than one outlet on the fireplace (figure 19).
B) Attach the 5" flexible pipe, using the collars provided. Important: Make sure that the
plastic wrapping around the flexible pipe will not be in contact with the fireplace.
C) Route the flexible pipe to the chosen location. The ducting system can be installed either
in an upper room or in a lower room.
D) Attach the flexible pipe to the fan, using the collars (figure 20).
E) Fix the backdraft damper to the fan outlet.
F) Attach a flexible pipe to the fan / flexible pipe adapter (square to round) and stretch it up
to the location where the heat is required.
G) At that point, the flexible pipe can be attached to any air distribution grill. It is possible to
connect a flexible pipe to a central heating system. Make sure the pipe will be connected
to the warm air supply duct, not to the return air duct (figure 21).
H) Install the blower heating and cooling thermostat (HCTW) in that part of the house to be
heated by the hot air duct. The thermostat can be switched to a cooling thermostat and
installed in the same room as the unit. This thermostat will turn on the blower when the
room where the fireplace is located becomes too hot.
This option requires electricity. Make sure that the connections to the fan have been made
according to the local codes and comply with their requirements (see instruction provided
with the thermostat).
Figure 19
20
Figure 20
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