Electrical Installation; Commissioning; General Information; Preparation - Dimplex WI 9 ME Instructions D'installation Et D'utilisation

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7.5.2 Electrical installation

1) The following electrical connections need to be established
on the heat pump.
Connection of the control line to the control panel of the heat
pump via terminal X1: L/N/PE.
Connection of the mains cable to the control panel of the
heat pump via terminal X5: L/N/PE.
Connection of the mains cable of the well pump to the con-
trol panel of the heat pump via terminal X5: L1/N1/PE.
Connection of the well pump (to be provided by the cus-
tomer) to the control panel of the heat pump via terminal X1:
PE and pump contactor K5: 14/24.
Ensure that the supply voltage for these terminals cannot be
switched off by the tariff contactor when connecting the
mains cable of the well pump, in order to enable the turn-off
delay of the well pump.
All electrical components required for the operation of the
heat pump are located on the control panel.
An disconnecting device with a contact gap of at least 3 mm
(e.g. utility blocking contactor or power contactor) as well as
a 1-pole circuit breaker have to be provided by the customer.
The required conductor cross-section is to be selected ac-
cording to the power consumption of the heat pump, the
technical connection requirements of the respective utility
company as well as all applicable regulations. Details on the
power consumption of the heat pump are listed on both the
product information sheet and the type plate.
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 line to the control panel of the heat pump
via terminal X1: L/N/PE.
The (L/N/PE~230 V, 50 Hz) supply cable for the heat pump
manager must have a constant voltage. For this reason, it
should be tapped upstream from the utility blocking contac-
tor or be connected to the household current, as important
protection functions could otherwise be lost during a utility
block.
3) The utility blocking contactor(K22) with main contacts and
an auxiliary contact should be dimensioned according to the
heat pump output and must be supplied by the customer.
The NO contact of the utility blocking contactor is looped
from terminal strip G/24 V AC to connector terminal J5/ID3.
CAUTION! Extra-low voltage!
4) The contactor (K20) for the immersion heater (E10) of mono
energy systems (HG2) should be dimensioned according to
the radiator output and must be supplied by the customer. It
is controlled (230 V AC) by the heat pump manager via ter-
minals N and N1-J13/NO4.
5) The contactor (K21) for the flange heater (E9) in the hot
water cylinder should be dimensioned according to the radi-
ator output and must be supplied by the customer. It is con-
trolled (230 V AC) by the heat pump manager via terminals
N and N1-J16/NO 10.
6) The contactors mentioned above in points 3, 4 and 5 are in-
stalled in the electrical distribution system. The mains cables
for the heating elements should be dimensioned and pro-
tected according to DIN VDE 0100.
7) All cables must be installed as permanent wiring.
8) The heat circulating pump (M13) is connected to terminals N
and N1-J13/NO 5.
9) The DHW loading pump (M18) is connected to terminals N
and N1-J13/NO 6.
EN-8
10) The return sensor (R2) is integrated into heat pumps for in-
door installation.
The heat pump manager is connected via the following ter-
minals: GND and N1-J2/B2.
11) The external sensor (R1) is connected to terminals GND and
N1-J2/B1.
12) The domestic hot water sensor (R3) is included with the do-
mestic hot water cylinder and is connected to terminals GND
and N1-J2/B3.
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Commissioning

8.1 General Information

To ensure that start-up is performed correctly, it should only be
carried out by an after-sales service technician authorised by the
manufacturer. This may be a condition for extending the guaran-
tee (see Warranty Service).

8.2 Preparation

The following items need to be checked prior to start-up:
The heat pump must be fully connected, as described in
Chapter 6.
The heat source system and the heating circuit must have
been filled and checked.
All valves that could impair proper flow in the well and heat-
ing circuits must be open.
The heat pump controller must be adapted to the heating
system in accordance with the controller's operating instruc-
tions.

8.3 Start-up Procedure

The heat pump is started up via the heat pump controller.
ATTENTION!
The heat pump must be started up in accordance with the installation and
operating instructions of the heat pump controller.
If an overflow valve is fitted to assure the minimum heating water
flow rate, the valve must be set in accordance with the require-
ments of the respective heating system. Incorrect adjustment
can lead to faulty operation and increased energy consumption.
We recommend carrying out the following procedure to correctly
adjust the overflow valve:
Close all of the heating circuits that may also be closed during
operation (depending on the type of heat pump usage) so that
the most unfavourable operating state - with respect to the water
flow rate - is achieved. This normally means the heating circuits
of the rooms on the south and west sides of the building. At least
one heating circuit must remain open (e.g. bathroom).
The overflow valve should be opened far enough to produce the
maximum temperature spread between the heating flow and re-
turn flow listed in the table below for the current heat source tem-
perature. The temperature spread should be measured as close
as possible to the heat pump. The heating element of mono en-
ergy systems should be disconnected during start-up.