Electrical Connection; Electrical Installation; Connecting An Electronically Regulated Circulating Pump - Dimplex WI 10TU Montage- Und Gebrauchsanweisung

7.5 Electrical connection

7.5.1 General
All electrical connection work may only be carried out by a trai-
ned electrician or a person qualified for the tasks in hand in ac-
cordance with the
 installation and operating instructions,
 country-specific installation requirements (e.g. VDE 0100)
 technical connection requirements of the energy suppliers
and supply grid operators (e.g. TAB) and
 the local conditions.
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-J19; N1-J20; N1-J23; N1-J24 and the terminal strips
X3; X5.1. If, due to a wiring error, the line voltage is mistakenly
connected to these terminals, the heat pump manager will be de-
stroyed

7.5.2 Electrical installation

1) The supply cable (with up to 5 cores) for the power element
of the heat pump or the primary pump is routed from the heat
pump's electricity meter to the heat pump.
The cable for the heat pump is routed via the utility contactor
(if required). Connection of the mains cable is at the control
panel of the heat pump via the terminals: X1: L1/L2/L3/N/PE
or X1: L10/L20/L30/N0/PE. If no utility contactor is used, the
electrical loads are supplied via a shared feed cable (bridge
feeds using bridges supplied). The power supplies are fitted
with an all-phase disconnection with at least 3 mm contact
opening distance (e.g. utility protection contactor, power
contactor), as well as an all-phase cutout switch, with shared
activation of all external conductors (release currents and
characteristics in accordance with device information; see
circuit diagram for further details).
ATTENTION!
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).
2) The three-core electric supply cable for the heat pump man-
ager (heating controller N1) is fed into the heat pump.
Connection of the control line to the control panel of the heat
pump via terminal X2: L/N/PE.
Details on the power consumption of the heat pump are
listed on both the product information sheet and the type
plate.
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.
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3) 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 by the customer.
The NO contact of the utility blocking contactor (13/14) is
looped from terminal strip X3/G to connector terminal X3/A1.
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 X2/N and X2/K20.
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
X2/N and X2/K21.
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 installed electric cables must have permanent wiring.
8) The heat circulating pump (M13) is connected to terminals
X2/N and X2/M13.
9) The DHW loading pump (M18) is connected to terminals X2/
N and X2/M18.
10) The brine and/or well pump (M11) is connected to terminals
2/4/6 of K5 and PE. If an additional well pump is used, the
protective motor switch at the site must be checked and re-
placed if necessary.
11) A return sensor is integrated into the heat pump. The return
flow sensor must be installed in the immersion sleeve in the
manifold when a dual differential pressureless manifold is
used. The single-core wires are then connected to terminals
X3/GND and X3/ R2.1. Bridge A-R2 (situated between X3/
B2 and X3/1 when delivered) must then be moved to termi-
nals X3/1 and X3/2.
12) The external sensor (R1) is connected to terminals X3/GND
and X3/R1.
13) The domestic hot water sensor (R3) is included with the do-
mestic hot water cylinder and is connected to terminals X3/
GND and X3/R3.
7.5.3 Connecting an electronically
regulated circulating pump
Electronically regulated circulating pumps have high starting cur-
rents, which may shorten the service life of the heat pump man-
ager. For this reason, a coupling relay is installed or must be in-
stalled between the output of the heat pump manager and the
electronically regulated circulating pump. This is not necessary if
the permissible operating current of 2 A and a maximum starting
current of 12 A are not exceeded in the electronically regulated
circulating pump or if express approval has been issued by the
pump manufacturer.
ATTENTION!
It is not permitted to connect more than one electronically regulated
circulating pump via a relay output.
452235.66.09 · FD 9304
WI 10TU - WI 22TU
EN-7