3.4 Elektrical connection
general notes
n
It is necessary to lay a power-supply cable
both to the outdoor unit and, separately, to the
indoor unit.
n
Power to the indoor unit may not be discon-
nected by the power company (frost protec-
tion).
n
All indoor unit require a single-phase power
supply at 230 V / 50 Hz.
The outdoor units series WKF 120 Duo require
a single-phase power supply at 230 V / 50 Hz
and the outdoor units series WKF 180 Duo
require a three-phase power supply at 400 V /
50 Hz.
n
The electrical connection between outdoor-
and indoor units is made using two-wire control
cable.
n
Where applicable, a separate power supply
shall be provided to the indoor unit for electric
booster heating.
n
The Smart-Control needs to know whether a
power-company release- or off-period is in
effect. An electrically-isolated switch must be
installed for this purpose (an closed switch sig-
nifies power available, an open switch, off-
time).
n
In the chapter "Structure electrical connection"
and "Circuit diagrams" in this manual can be
found a connection schematic along with corre-
sponding circuit diagrams.
n
Special rates for heat pumps may be offered
by the power company (PSC).
n
Ask your local power company about the
details of any rates that might be available.
DANGER!
All electrical installation work must be done by
an electrician.
WARNING!
Always note the currently applicable VDE
guidelines and the notes in TAB 2007. The size
and type of the fuse are to be taken from the
technical data.
WARNING!
All cable sizes are to be selected according to
VDE 0100. Special attention should be given to
cable lengths, cable type and the kind of instal-
lation. The information in the connection dia-
gram and in the system overview are to be
seen as an acceptable installation possibility
only in a standard case!
NOTICE!
Make sure to connect the outdoor unit neutral
connector properly, otherwise the varistors on
the line-filter circuit board will be destroyed.
NOTICE!
The electrical connection for the units must be
made at a separate feedpoint with a residual
current device in accordance with local regula-
tions and should be laid out by an electrician.
Check all plugged and clamped terminals to
verify that they are seated correctly and make
permanent contact. Tighten as required.
REMKO WKF series
30
Summary of Contents for WKF 120
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