52
■ In negotiations with your power supply
utility, different supply tariffs for the
main power circuits may be offered.
Observe the technical connection con-
ditions of the power supply utility.
■ If the compressor and/or instantane-
ous 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 distribution board (meter box)
to the heat pump control unit
or
Combine the cable 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 off for up to 3 x 2 hours per day
(24 h).
■ The
heat pump control unit/PCB
must be supplied
without
power-OFF.
Tariffs subject to possible shutdown
must not be used here.
■ In conjunction with on-site power con-
sumption (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 compres-
sor with power generated on site.
■ Protect the power supply to the heat
pump control unit with an MCB/ fuse of
max. 16 A.
■ For accessories and external compo-
nents that are not to be connected to
the heat pump control unit, connect the
power supply on the same phase as
the heat pump control unit; we recom-
mend using the same MCB/fuse.
Connection to the same MCB/fuse
provides additional safety when the
power is switched off. Observe the
power consumption of the connected
consumers.
Information regarding the compres-
sor power supply
■
!
Please note
An incorrect phase sequence
can cause damage to the appli-
ance.
Make the compressor power
supply
only
in the phase
sequence specified (see termi-
nals) with a
clockwise
rotating
field.
■ Characteristics of the compressor
power fuses: see "Specification".
Installation sequence
Power supply
(cont.)
5516 436 GB
