48
■
In negotiations with your power supply utility, differ-
ent supply tariffs for the main power circuits may be
offered.
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.
■
When using power generated on site (use of power
generated by the PV system to meet own require-
ments):
During the power-OFF period, it is
not
possible to
operate the compressor utilising power generated on
site.
■
Protect the power cable to the heat pump control unit
with an MCB/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 MCB/fuse, or at
least on the same phase, as the heat pump control
unit.
Connection to the same MCB/fuse provides addi-
tional safety when the power is switched off.
Observe the power consumption of the connected
consumers.
■
The PE wire of the power cable must be approx.
10 mm longer than the N and L wires.
Heat pump control unit power supply 230 V~
X40
A
N
?
L1
N
?
L1
F1 6.3 AH (slow)
1/N/PE
230 V/50 Hz
Fig. 47
Note
This supply must
never
be blocked.
■
Max. fuse rating 16 A
■
Standard tariff (no optional economy tariff with
power-OFF facility)
■
Recommended power cable: 3 x 1.5 mm
2
(5 x 1.5 mm
2
with power-OFF)
Outdoor unit power supply
■
Economy tariff and power-OFF can be used.
■
No parameters need to be set when using economy
tariff with power-OFF. The compressor is shut down
during the power-OFF time.
■
During power-OFF, the diagnostic functions for the
outdoor unit are not supported.
Installation sequence
Power supply
(cont.)
5790 931 GB
Installation
