13
8. The condensation and control lines also have to be
connected and, depending on the selected option,
guided to the outside.
Described below.
9. If, due to structural design conditions, it is not possi-
ble to guide the condensation line through as well,
make sure that the condensation can drain freely at
all times.
10. Hang the indoor unit leaning slightly to the back in
the previously assembled wall mount and press the
bottom of the unit into the mount until it catches.
Prior to beginning installation, please observe the fol-
lowing:
à
We recommend that the customer install a main or
repair switch close to the outdoor part.
à
Power is supplied to the indoor units via a connec-
tion line from the outdoor part.
à
Fuse protection for the system must occur in accor-
dance with the technical data.
The connections of the indoor unit are located on the
right hand side next to the fan and are hidden from view
by the housing. Proceed as follows to connect the line:
1. Open the air intake grille of the unit downwards or
take it off completely and remove the right air filter.
2. The connection terminal strip is freely accessible
once the protective cover has been removed.
3. Connect the indoor unit to the outdoor part using the
current-free line in accordance with the electrical wir-
ing diagram and reassemble the unit in the reverse
order.
11. If the outdoor part is set
up at a higher level than
the indoor unit, appropri-
ate steps must be taken
for oil recirculation.
This can be achieved by
installing oil elevation
arcs every 2.5 meters of
line going up.
7. Before you flare the refrigerant lines, ensure that
there is a swivel nut on the hose. Also make sure
that the flare has the correct shape.
Prior to performing any work on the indoor unit and
outdoor part, it must be unplugged from the power
supply and secured against being inadvertently
switched on!
Electrical Connection
To control the outdoor part, a 4-wire control line must be
laid to the indoor unit and a feed-in line installed. The
electrical installations may only be performed by author-
ised personnel in line with the relevant regulations. Local
guidelines for operation as well as the requirements es-
tablished by local energy supply companies must be ob-
served for setup and initial operation.
uneven
thickness
formation
of cracks
formation
of cracks
rippled
CORRECT
A vacuum with a minimum of 0.05 mbar must be
created!
How long it takes to create the vacuum is based on the
hose line volume of the indoor unit and the length of the
refrigerant lines. However, this process takes a mini-
mum of 30 minutes.
Once foreign gases and moisture have been completely
removed from the system, the manometer station
valves are closed and the valves of the outdoor part are
opened as described in the section "Initial Operation“.
Impermeability Check
Once all connections have been made, the manometer
station is connected to the corresponding valve connec-
tions as described below:
red = small valve = injection pressure.
blue = large valve = suction pressure.
After the connection has been made, an impermeability
test is conducted using dry nitrogen.
The connections that have been established are
sprayed with a leak locator spray to test for imperme-
ability. Tighten the bolts more firmly or, if necessary,
create a new flare.
After this test has been successfully conducted, any ex-
cess pressure is removed from the refrigerant lines and
a vacuum pump with an absolute final partial pressure
of at least 0.01 mbar is put into operation to create a
vacuum in the lines. This also removes any moisture
from the lines.
12.
First manually connect
the refrigerant lines with
the screws of the indoor
unit to ensure that they are in the proper position.
Now tighten the bolts using 2 hexagonal wrenches
that have a large enough opening.
13. The installed refrigerant lines are heat-insulated and
sealed against diffusion. Only use insulated hoses
suitable for this temperature range.
14. Lay the connected lines and the control lines to the
outdoor part. Remove the protective caps of the
valves and proceed as described under Point 5.
Radius:
50 mm
Oil elevation arcs in
the control line to the
outdoor part
Indoor
unit
Outdoor
part
