n Electrical protection for the system is imple-
mented in accordance with the information in
the technical data. Observe the required con-
ductor cross-sections!
n All cables must be connected with the correct
polarity and strain relief.
n Follow the connection schematic and the circuit
diagram.
n The two-wire control line is to be connected to
terminals F1, F2 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 (by connecting them to a lighting con-
ductor or foundation earth electrode).
n With the series WKF 180 Duo, make sure that
on terminals L1(R), L2(S), L3(T) and N are
connected (see
Fig. 20).
Fig. 19: Connection terminals - outdoor unit WKF
120 Duo
1: Power supply 230V/1~ /50Hz
Fig. 20: Connection terminals - outdoor unit WKF
180 Duo
NOTICE!
Make sure to connect the outdoor unit neutral
connector properly
, otherwise the varistors on
the line-filter circuit board will be destroyed.
Temperature probes
n The number of probes required can vary with
the type of system.
n Observe the pertinent notes for the probe posi-
tion found in the hydraulic schematic.
n The standard model includes an external probe
(S10) and an immersion probe (intended for
use as a custom hot-water probe (S08)).
n If a solar plant is connected, a PT
-1000 probe
(S01) must be used as a collector probe and a
PT-1000 probe (S02) as a bottom storage tank
probe.
n All probes are to be connected to the indoor
unit switching cabinet in accordance with the
connection diagram.
REMKO WKF series
32
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