Electrical Connection - Dimplex WI 120TU Instructions D'installation Et D'utilisation

WI 120TU
7.4.4 Hydraulic distribution system
The compact manifold and the dual differential pressureless
manifold function as an interface between the heat pump, the
heating distribution system, the buffer tank and, in some cases,
even the domestic hot water cylinder. A compact system is
used to simplify the installation process, so that a lot of different
components do not have to be installed individually. Further in-
formation can be found in the relevant installation instructions.
Compact manifold
The return sensor can remain in the heat pump, or should be in-
stalled in the immersion sleeve. The remaining empty space be-
tween the sensor and the immersion sleeve must be filled com-
pletely with heat transfer compound.
Dual differential pressureless manifold
In order for the heating circuit pumps of the generator and con-
sumer circuits to supply the flow to the return sensor, this must
be installed in the immersion sleeve of the dual differential
pressureless manifold.

7.5 Electrical connection

7.5.1 General
All electrical installation work must be carried out by a trained
electrician or a specialist for the specified tasks in accordance
with the
installation and operating instructions,

 country-specific installation regulations (e.g. VDE 0100),
technical connection conditions of the energy suppliers

and supply grid operators (e.g. TAB) and
local conditions.

To ensure that the frost protection function of the heat pump
works properly, the heat pump manager must remain con-
nected to the power supply and the flow must be maintained
through the heat pump at all times.
The switching contacts of the output relay are interference-
suppressed. Therefore, depending on the internal resistance of
the measuring instrument, a voltage can also be measured
when the contacts are open. However, this will be much lower
than the line voltage.
Extra-low voltage is connected to controller terminals N1-J1 to
N1-J11; N1-J19 to N1-J20; N1-J23 to N1-J26 and the terminal
strips X3. If, due to a wiring error, the line voltage is mistakenly
connected to these terminals, the heat pump manager will be
destroyed.
NOTE
For installation work on the switch box, ensure that the mains
cable and signal cables are inserted separately into the switch
box. The specially arranged switch box inlets must be used for
this purpose (see Fig. 7.4 on page 7).
The mains cables and signal cables must also always be laid
separately in the switch box during wiring work.
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Supply signal cable
extra-low voltage
Fig. 7.4:Cable inlet switch box
7.5.2 Electrical installation work
1) The four-core electrical supply cable for the heat pump
power part is fed from the heat pump electricity meter into
the heat pump via the utility company blocking contactor
(if required) (for supply voltage, see heat pump manual).
The mains cable is connected to the heat pump contact
plate via terminals X1: L1/L2/L3/PE.
CAUTION!
Ensure that there is a clockwise rotating field: With incorrect
wiring the starting of the heat pump is prevented. A
corresponding warning is indicated on the display of the heat
pump manager (adjust wiring).
An all-pole disconnecting device with a contact gap of at least
3 mm (e.g. utility company blocking contactor or power contac-
tor) 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 compli-
ance with the device information).
2) The three-core supply cable for the heat pump manager
(heating controller N1) is fed into the heat pump. Connec-
tion of the control cable to the contact plate of the heat
pump via terminal X2: L/N/PE.
The (L/N/PE~230 V, 50 Hz) supply cable for the heat pump
manager must have a continuous voltage. For this reason,
it should be tapped upstream from the utility company
blocking contactor or be connected to the household cur-
rent, as important protection functions could otherwise be
lost during a utility block.
3) The utility company blocking contactor (K22) with main
contacts and an auxiliary contact must be designed and
provided by the customer in accordance with the heat
pump output.
The NO contact of the utility company blocking contactor
is looped from the terminal strip X3/G to the plug-in termi-
nal X3/ID3. CAUTION! Extra-low voltage!
452237.66.68 · FD 0205
Supply mains cable
line voltage
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