Technical data

4
Fascia panel fixing
• Check the unit is level, using the level gauges provided.
• Screw two of the fixing bolts into two diagonally
opposed sockets.
• Locate the panel onto the bolts, and insert the two
remaining bolts.
• Fix the panel only in the position indicated in the
packed instructions, i.e. with all four air outlets
correctly aligned, otherwise there will be air leakage.
Fresh air intake
The FDT cassette includes an aperture in one corner for
the introduction of fresh air. A small knock out is provided
in the corner section of the unit (in one position only). The
position and dimensions are shown on the drawing below.
The fresh air inlet is on the suction side of the turbo fan,
and will draw in a small quantity of fresh air, provided
the inlet duct is not longer than 5 metres. The inlet duct
should have a cross section area of at least 750mm
2
.
Where a fan is used to provide a small positive pressure for
the fresh air intake, it is essential the volume of air does
not exceed 10% of the air volume of the unit. Too much
fresh air entering the unit will result in excessive noise.
RCD remote control
installation (wired type)
Please refer to page 8 for RCD installation
instructions and customise settings.
Remote control
(wireless infra-red type)
The FDTN version of the 8 Series cassette systems is
supplied with an infra-red controller. A wall mounted
bracket is provided. For operational details, please refer
to page 18.
Branch duct
It is possible to deliver a proportion (20% max) of the
conditioned air to a small adjacent area using a branch
duct connection to the side of the FDT cassette unit.
The branch duct can be connected at positions on four
sides of the unit. There are knock-out sections, allowing
the installer to make an opening to suit the size of the
connecting duct. The suggested size for the branch duct
is 150mm dia. or similar.
Where a fan is used to provide a positive pressure for
the branch duct, the air volume should not exceed 20%
of the unit air volume.
Safety Warning: Refer to safety data on back cover of this manual
Further Information
Space collar installation page 5
Refrigerant piping installation page 19
Electrical wiring installation page 21
Condensate drain installation page 23
Outdoor unit installation & location page 25
Remote control RCD set up page 8
Group control set up page 9
Superlynk network SCA-DE interface page 22
Fresh air
entry
position
Branch
duct - four
positions
Condensate
drain
Refrigerent pipe
connections
1
3
2
4
Cassette Unit
viewed from above
The facia panel can
be rotated on it’s
locating screws to
allow accurate
alignment with the
ceiling grid
Branch duct to
adjacent room
Fresh air inlet duct
connection to
corner of unit