© 1995-2009 Energy Saving Products Ltd.
The Flexible Duct coupling is connected to the branch
Take-Off, then mechanically fastened with at least one ¼”
(6.7mm)
self tapping screw. The connection then should be
sealed with foil duct tape or an approved sealant.
Fig. 18 - Secure to plenum with gentle bends
SLIGHT
ANGLE
SLIGHT ANGLE
The Flexible Duct coupling is connected to the Rough-
In Boot, then mechanically fastened with at least one ¼”
(6.7mm)
self tapping screw
(Fig. 19)
. The connection then
should be sealed with foil duct tape or an approved sealant.
Hard angles should never be used when connecting
to the main plenum or Rough-In Boot, keep the bends as
gentle as possible
(Fig. 18)
. A hard bend should never be
created in the flexible duct as this will restrict airflow to the
outlet.
Connecting to Rough-In Boot
Fig. 19 - Mechanically Fasten
When connecting the
UFD to the AFD, attach the
branch coupling into the inner core of the UFD with foil
duct tape, connect the two branch couplings with the
branch connector tube
(Fig. 20)
. Now pull the insulation
and vapour barrier over the inner core and secure around
the outside of the vapour barrier with a cable tie. Tighten
the cable tie securely around the branch connector, inner
core, insulation, and vapour barrier.
Fig. 20 - Fasten with tie straps
Extending the AFD with a UFD kit
To complete the installation, cut out the Rough-In Cap
(Fig. 21)
and install the vent plate by sliding the vent plate
into the end of the damper tube
(Fig. 22)
. Ensure the vent
is in the
fully open position
.
If the flexible duct is in an unconditioned space, then all
connections must be taped to ensure a continuous vapour
seal. This includes the Branch Take-Off and the vent
Rough-In Boot. Try not to damage the vapour barrier on
the flexible duct. If it is damaged, holes must be taped. If
possible, try to run the flexible duct between the insulation
and the vapour barrier.
Flexible duct is not to be used in concrete applications.
Caution should be used when running metal or PVC pipe
under concrete, to ensure pipe is not crushed. For certain
applications in which hard pipe is needed, certain guidelines
must be followed. All metal ducts run in a concrete slab
must be sealed with an approved duct sealer. For vertical
runs out of the floor, it may be necessary to extend the
damper tube or vent plate collar
(Fig. 23)
, to connect to
the AFD Kit.
Unconditioned Spaces
Two Inch Metal Duct
Flexible Duct Termination
Fig. 21
Fig. 22
When the sub floor and floor finishing is too thick for
the connection of the vent plate, it may be necessary to
use an extension kit. Connect the vent plate extension
to the branch connector tube and vent plate. The branch
connector tube can be cut at different lengths so the vent
plate sits flush with the floor finishing.
Fig. 23 - Extension kit
Vent Plate Extensions
Module DUC
Installing Plenum and Branch Duct (6/9)
Module DUC Installing Plenum and Branch Duct (6/9)
Connecting to the Main Plenum
TEST SYSTEM FOR LEAKS BEFORE
INSTALLATION OF DRYWALL.
The Rough-in Boot can be insulated and vapor barriered
using the insulation and vapor barrier that is around the
flex duct. Cut the cable tie on the flex duct and pull the
insulation and vapor barrier over the flange of the Rough-in
Boot and replace cable tie. Tighten the cable tie securely
around the boot, insulation and vapor barrier.
