Electrical Connections - Dimplex LIA 0608HWCF M Installation And Operating Instruction

LIA 0608HWCF M - LIA 0911HWCF M

7.2 Electrical connections

7.2.1 Outdoor component
NOTE
The DIP switches on the circuit boards in the outdoor unit
have no function. The positions of the DIP switches must
remain in their factory default and must not be changed!
Two cables must be connected on the outdoor unit:
A 'mains cable' and a 'data cable'
Both cables must be laid between the indoor and outdoor unit.
The mains cable is used to supply the outdoor unit with power
and the data cable is for communication between the outdoor
and indoor component. The VDE directives and regulations and
local conditions must be taken into account in the design and
installation of the two cables.
The fusing of the outdoor unit and the indoor unit must be ex-
ternal.
The mains cable on the 6/10 kW outdoor unit must be three-
core and be connected to the terminals L/N/PE (power supply).
For the 14 kW outdoor unit, the mains cable must be 3-core or
5-core, depending on the version (230 V or 400 V), and be con-
nected to terminals L1/N/PE or LI/L2/L3/N/PE.
 No cables with different thicknesses may be connected to
the connecting terminal. (One of the cables may come
loose during strong heat development.)
Multiple cables of the same thickness must be connected

as shown in the figure.
A shielded 2-core cable must be used as a data cable.
Connect communication terminal E/P/Q on the outdoor unit to
the J9 BUS terminals on the control module in the indoor unit
switch box.
The connections can be established as follows:
Connecting terminal P (outdoor unit) to J9 negative (-) (in-

door unit)
 Connecting terminal Q (outdoor unit) with J9 positive (+)
(indoor unit)
Connecting terminal E (outdoor unit) with J9 ground (o) (in-

door unit)
To avoid interference and distortion of the communication sig-
nal, the communication cable should not be routed directly
next to the mains cable. Create as much space as possible be-
tween the communication cable and the mains cable. The liq-
uid and gas lines should be laid in the middle and the mains and
communication cables to the sides.
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7.2.2 Indoor component
Two supply cables must be connected to the indoor compo-
nent: The power supply for the electric heating element and the
control voltage for the integrated heat pump manager. (Load:
3~; 1x 5-core; control: 1~; 1x three-core) The VDE directives
and regulations and local conditions must be taken into ac-
count in the design and installation of the cables.
NOTE
The indoor unit can be configured for single-phase operation
if required. For more detailed information, please refer to the
enclosed electrical documentation.
NOTE
The positions of the copper connection bridges in the
terminals for the power supply must be complied with. The
copper connection bridges are not connected when the unit
is delivered in the factory default condition and are included
with the unit. The copper connection bridges connected as
soon as the pipe heating is operated at 230 V.
The supply cable for the output section of the heat pump (up to
5-core) is fed from the electricity meter of the heat pump via
the utility blocking contactor (if required) into the heat pump
(see heat pump operating instructions for supply voltage). An
all-pole disconnecting device with a contact gap of at least 3
mm (e.g. utility blocking contactor or power contactor) and an
all-pole circuit breaker with common tripping for all external
conductors must be installed in the power supply for the heat
pump (tripping current and characteristic in compliance with
the device information).
The supply cable (1~L/N/PE~230 V, 50 Hz) for the heat pump
manager must have a continuous voltage. For this reason, it
should be tapped upstream from the utility blocking contactor
or be connected to the household current, because otherwise
important protection functions could be lost during a utility
block. The correct control voltage must be ensured according
to the general information leaflet/rating plate.
The utility blocking contactor (K22) with 3 main contacts (1/3/
5 // 2/4/6) and an auxiliary contact (NO contact 13/14) should
be dimensioned according to the heat pump output and must
be supplied on-site. The NO contact of the utility blocking con-
tactor (13/14) is looped from terminal strip X3/G to connector
terminal N1-J5/ID3. CAUTION! Extra-low voltage!
The power supply must be connected to terminal strip X1 and
the control voltage to terminal X2 in the indoor component.
For detailed instructions on how to connect the external com-
ponents as well as how the heat pump manager functions,
please refer to the device connection diagram and the operat-
ing instructions supplied with the heat pump manager.
The 2nd heat generator is set to 6 kW heat output in the factory
default condition. To reduce the output to 4 kW or 2 kW, one or
both connection lines should not be connected and the ends
should be insulated.
For detailed information, see circuit diagrams in the attach-
ment.
The electrical cables can be fed into the device from above (up-
stream of the drinking water connections).
452172.66.01-EN · FD 0204
English
EN-19