14
Connecting the RKV 10 W, 13 W and 18 W units
Proceed as follows to connect the units:
1. Open the front of the unit and remove both filters.
2. Using a Phillips screwdriver, loosen both screws of
the grille mount and remove the grille.
3. Remove the six screws on the front of the housing.
4. Remember that three of the screws are hidden un-
der caps behind the oscillating blades.
5. Remove the front cover of the housing.
6. Pull the terminal strip of the connection towards you
out of the unit.
7. Connect the unit to the current-free line from the
outer part.
See figures.
8. Reassemble the unit.
Prior to performing any work on the unit, it must be
unplugged from the power supply and secured
against being inadvertently switched on!
Adding Refrigerant
The refrigerant required for operating the system is lo-
cated in the outdoor part.
For refrigerant lines longer than 5 m per cycle, refriger-
ant must be added in line with the information in the op-
erating instructions for the respective outer part. Pro-
ceed as follows to add additional refrigerant:
1. Remove the vacuum pump and connect the filling
cylinder.
2. Place the open cylinder on a scale and calibrate the
scale to zero.
3. Create a vacuum in the hose at the height of the ma-
nometer distribution pipe.
4. Determine the required amount based on the infor-
mation in the operating instructions of the outdoor
part.
5. Open the suction pressure side of the manometer.
6. Close the manometer valve when the appropriate
amount has been added.
Connecting the RKV 24 W unit
Proceed as follows to connect the unit:
1. Open the front of the unit and remove both filters.
2. Using a Phillips screwdriver, loosen both screws of
the grille mount and remove the grille.
3. Remove the five screws on the right half-shell on the
housing.
4. Remove the half-shell to free up the control unit on
the right side.
5. Pull the terminal strip of the connection towards you
out of the unit
Please observe the following:
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.
à
The electrical terminals of the connections are lo-
cated on the lower right hand side of the indoor unit.
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.
Electrical Connection
A 4-wire control line must be led from the indoor unit to
the outdoor part. All electrical installations may only be
performed by authorised personnel in line with the rele-
vant regulations.
Local guidelines for operation as well as the require-
ments established by local energy supply companies
must be observed for setup and initial operation.
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