NOTICE!
Attach cables in accordance with the connec-
tion schematic and/or the circuit diagram in the
control box.
NOTICE!
Ensure correct polarity when connecting the
electrical leads, especially the control cable.
The number of lines and the sensors is
dependent on the configuration of the heating
system and the components.
Make sure to use enough cable when installing
the indoor unit so that the control box can be
fully lowered for future maintenance.
At the site, avoid adding cable inlets.
2.9 Electrical connection - outdoor
unit
n T
o connect up the electrics, remove the right
cladding panel after unfastening the screws.
Fig. 8: WKF/WKF compact 80/100/130 series -
remove the cover by unfastening the screw
1: Screw
Fig. 9: WKF/WKF compact 170 series - remove the
trim panel by unfastening the screws
1: Screw
n Electrical protection for the system is imple-
mented in accordance with the information in
the T
echnical Data. Observe the required con-
ductor cross-sections!
n All cables must be connected with the correct
polarity and strain relief.
n The power supply must be connected to ter-
minal L (phase) / N (neutral conductor) and PE
(earth conductor).
n Follow the connection schematic and the circuit
diagrams.
n The two-wire control line is to be connected to
terminals A/B and the earth terminal.
n When connecting the control line, make sure
that polarity is correct.
n If the outdoor unit is installed on a roof, it and
the supporting structure must be earthed sepa-
rately (connection to lightning conductors or
foundation earth/ground feature).
n With the WKF/WKF compact 170 series, make
sure that only terminals L1(R), L2(S), L3(T)
and N are connected (see Fig. 11).
15
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