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5
Installation instructions for qualified personnel
5.1 Important notes prior to instal-
lation
n
Transport the unit in its original packaging as
close as possible to the installation location.
You avoid transport damage by doing so.
n
Check the contents of the packaging for com-
pleteness and check the unit for visible trans-
port damage. Report any damage immediately
to your contractual partner and the shipping
company.
n
Lift the unit on the corners and not on the
refrigerant or condensate drainage connec-
tions.
n
The refrigerant piping (liquid and suction pipe),
valves and connections must be insulated to
make them vapour diffusion proof. If necessary
also insulate the condensate drainage line.
n
Select an installation location which allows air
to freely flow through the air inlet and outlet
(see section "Minimum clearances")
n
Do not install the unit in the immediate vicinity
of devices which generate intensive thermal
radiation. Installation in the vicinity of thermal
radiation reduces the unit output.
n
Only open the shut-off valves on the refrigerant
piping after installation is complete.
n
Seal off open refrigerant piping with suitable
caps or adhesive strips to prevent the infiltra-
tion of moisture and never kink or compress
the refrigerant piping.
n
Avoid unnecessary bends. This minimises the
pressure loss in the refrigerant piping and
ensures that the compressor oil can flow back
without obstruction.
n
Make special preparations regarding the oil
return if the outdoor unit is located above the
indoor unit (see section "Oil return measures").
n
Add refrigerant if the basic length of the refrig-
erant piping exceeds 5 metres. For the quantity
of additional refrigerant, refer to chapter
"Adding refrigerant".
n
Perform all electrical wiring in accordance with
applicable DIN and VDE standards.
n
Ensure the electrical cables are properly con-
nected to the terminals, otherwise there is a
risk of fire.
n
Only use the fasteners contained in the scope
of delivery with the units.
n
Use four supports and the associated hooks to
attach the ceiling cassette (only applies to
ceiling cassettes).
n
Use the insulated condensate hose in the
scope of delivery as a junction piece to the
continuing condensate drain. Secure the con-
densate drain with the supplied clamps.
5.2 Wall openings
n
A wall opening of at least 70mm diameter and
10mm incline from the inside to the outside
must be created.
n
To prevent damage to the lines, the interior of
the wall opening should be padded or, for
example, lined with PVC pipe (see figure).
n
After installation has been completed, use a
suitable sealing compound to close off the wall
opening, taking account of fire protection regu-
lations (responsibility of customer). Do not use
cement or lime containing substances!
1
2
3
4
Fig. 25: Wall opening
1: Liquid line
2: Control line
3: Condensate drainage line
4: Suction pipe
5: PVC pipe
5.3 Installation materials
The indoor unit is attached to the wall by a wall
bracket and 4 screws (to be provided by the cus-
tomer).
The outdoor unit is attached by 4 screws and a
wall bracket to the wall or fixed by a floor bracket to
the ground.
5
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