55
Connect the power supply and
implement all safety measures
(e.g. RCD circuit) in accordance
with the following regulations:
■ IEC 60364-4-41
■ VDE regulations
■ Technical connection require-
ments specified by the local
power supply utility
Danger
The absence of component
earthing can lead to serious injury
from electric current if an electri-
cal fault occurs.
■ Remake all earth connections
inside the heat pump.
■ Heat pump and pipework
must
be grounded to the equi-
potential bonding of the build-
ing.
Danger
Incorrect core assignment can
result in serious injury and dam-
age to the appliance.
Never interchange cores "L" and
"N".
■ In negotiations with your power supply
utility, different supply tariffs for the
main power circuits may be offered.
Observe the technical connection
requirements of the power supply util-
ity.
■ The power-OFF assignment is made
via the type of connection.
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 with power that
cannot
be
blocked by the power supply utility.
Tariffs that are subject to possible
shutdown must not be used here.
Install the power supply of the heat
pump control unit and the cable for the
power-OFF signal in accordance with
the wiring diagram.
■ Protect the power supply to the heat
pump control unit with a MCB/fuse of
no higher than 25 A.
Information regarding the compres-
sor power supply
(power circuit)
■
!
Please note
Incorrect phase sequence can
result in appliance damage.
Make the compressor power
supply
only
in the phase
sequence specified (see termi-
nals) with a
clockwise
rotating
field.
■ The compressor power MCB/fuses
must have C characteristics.
Installation sequence
Power supply
(cont.)
5848 246 GB
Installation
