Electrical Connection; Electrical Installation - Dimplex SI 75TER+ Instructions D'installation Et D'utilisation

7.5

7.5 Electrical connection

7.5.1 General
During start-up, observe the respective national safety regula-
tions and the applicable VDE safety regulations, particularly
VDE 0100, as well as the technical connection requirements of
the utility companies (EVU) and network operators!
To ensure that the frost protection function of the heat pump
works properly, the heat pump manager must remain connected
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-sup-
pressed. 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-J24 and terminal strip X2; X3. If, due to a wiring er-
ror, the line voltage is mistakenly connected to these terminals,
the heat pump manager will be destroyed.

7.5.2 Electrical installation

1) The supply cable for the output section of the heat pump (up
to 4-core) are 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 volt-
age).
Connection of the mains cable to the control panel of the
heat pump via terminal X1: L1/L2/L3/PE.
ATTENTION!
The clockwise phase sequence must be observed when connecting the
load lines (the heat pump will deliver no output and will be very noisy
when the phase sequence is incorrect).
An all-pole disconnecting device with a contact gap of at
least 3 mm (e.g. utility 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 com-
pliance 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 line to the control panel 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 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.
EN-8
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5)
6)
7)
8)
9)
10) The brine or well pump is connected to terminals 2/4/6 of K5
11) The return sensor (R2) is integrated into heat pumps for in-
12) The external sensor (R1) is connected to terminals GND and
13) The hot water sensor (R3) is installed in the hot water cylin-
The power cable must be run through the guide tubes, inserted
into the side of the control box and secured by means of the
strain relief.
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.
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.
All cables must be installed as permanent wiring.
The heat circulating pump (M13) is connected to terminals N
and N1-J13/NO 5.
The DHW loading pump (M18) is connected to terminals N
and N1-J13/NO 6.
and PE.
door installation.
The heat pump manager is connected via the following ter-
minals: GND and N1-J2/B2.
N1-J2/B1.
der and is connected to terminals GND and N1-J2/B3.