87
Isolators for non-earthed conductors
■
Install an isolator in the power cable to provide
omnipolar separation from the mains for all active
conductors, corresponding to overvoltage category
III (3 mm) for full isolation. This isolator must be fitted
in the permanent electrical installation in line with
installation requirements, e.g. mains isolator or
upstream circuit breaker.
■
We additionally recommend installing an AC/DC-
sensitive RCD with a nominal residual current of
maximum 30 mA (RCD class B ) for DC (fault)
currents that can occur with energy efficient equip-
ment.
■
Select and size RCDs to DIN VDE 0100-530.
Danger
Incorrect electrical installations can lead to seri-
ous injury from electrical current and result in
appliance damage.
Connect the power supply and implement all
safety measures (e.g. RCD circuit) in accord-
ance with the following regulations:
■
IEC 60364-4-41
■
VDE regulations
■
TAR low voltage VDE-AR-N-4100
Danger
Incorrect electrical installations can lead to seri-
ous injury from electrical current and result in
appliance damage.
■
Protect the power cable against damage.
■
In the outside area, the power cable must not
be lighter than rubber sheathed cables with
polychloroprene cover. Only use cables
marked with ID 60245 IEC 57.
Danger
The absence of system component earthing can
lead to serious injury from electrical current and
component damage in the event of an electrical
fault.
The appliance and pipework must be connected
to the equipotential bonding of the building.
Danger
Incorrect core assignment can lead to serious
injury from electrical current and result in appli-
ance damage.
Do not interchange cores "L" and "N".
Note
Incorrectly executed electrical installations may cause
undesirable electromagnetic interaction with other
electronic devices.
■
Consult your power supply utility, which may offer dif-
ferent supply tariffs for the power circuits.
Observe the technical connection conditions of the
power supply utility.
■
If the compressor and/or instantaneous heating
water heater are operated at an economy tariff
(power-OFF), either provide an additional cable (e.g.
3 x 1.5 mm
2
) for the power-OFF signal from the dis-
tribution board (meter box) to the heat pump control
unit.
Or
Combine the cables for the power-OFF signal and
for the heat pump control unit power supply
(3 x 1.5 mm
2
) in a 5-core cable.
■
The assignment of the power-OFF (for compressor
and/or instantaneous heating water heater) is made
via the type of connection and by setting parameters
in the heat pump control unit.
In Germany, the power supply can be cut for a maxi-
mum of 3 x 2 hours per day (24 h).
■
The heat pump control unit/PCB must be supplied
without power-OFF. Tariffs subject to possible shut-
down must not be used here.
■
Using self-consumption (use of power generated by
the photovoltaic system for own use):
During the power-OFF period, it is not possible to
operate the compressor with self-generated power.
■
Protect the power cable to the heat pump control unit
with a fuse of max. 16 A.
■
For accessories and external components that will
not be connected to the heat pump control unit, pro-
vide the power supply via the same fuse, or at least
on the same phase, as the heat pump control unit.
Connection to the same fuse provides additional
safety in the event of the power being switched off.
Observe the power consumption of the connected
consumers.
■
If the power supply to the appliance is connected
with a flexible power cable, ensure that the live con-
ductors are pulled taut before the earth conductor in
the event of strain relief failure. The length of the
earth conductor wire will depend on the design.
Electrical connections
Power supply
6222080
Installation
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