63
■ 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
without
being
interrupted by the power supply utility;
tariffs 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 an MCB/fuse of
no higher rating 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.
Heat pump power supply 400 V~
Install the connection according to the
relevant electric scheme. Typical cross-
sections and lengths are shown in the
following table.
Recommended power cables
Note
■ The specified cross-sections and max-
imum cable lengths apply to routing in
empty pipes or ducts at an ambient
temperature of up to 25 °C.
■ In the case of routing in the vicinity of
heating pipes or encapsulated routing,
the cross-sections and maximum
cable lengths must be recalculated (on
site).
Installation sequence
Power supply
(cont.)
5848 449 GB
Installation
