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

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7.5 Electrical connection

7.5.1 General
All electrical connection 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
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-
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-J24 to N1-J26 and terminal strip X3. If, due to a
wiring error, the line voltage is mistakenly connected to these
terminals, the heat pump manager will be destroyed.

7.5.2 Electrical installation

1) The electrical 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). As delivered, the power supply can be
taken from a common mains circuit. As an option, the heat
pump and the second heat generator can be powered by
separate cables, provided that the bridges are removed
from the supply terminals (see circuit diagram in the ap-
pendix).
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 characteris-
tic in compliance with the device information).
When connecting the device, ensure that the incoming
supply has a clockwise rotating field L1; L2; L3; L10; L20;
L30.
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).
On delivery, the 2nd heat generator is connected with a
2 kW heat output. To increase the output to 4 kW or 6 kW,
the copper bridges included in the scope of supply must
be connected as shown in the circuit diagram.
For detailed information, refer to the circuit diagrams in the
appendix.
2) The three-core electrical supply cable for the heat pump
manager (heating controller N1) is fed into the heat pump.
The correct control voltage must be ensured according to
the type plate. The (L/N/PE~230 V, 50 Hz) supply cable for
the heat pump manager must have a constant voltage. For
EN-10
this reason, it should be tapped upstream from the utility
blocking contactor or be connected to the household
current, as important protection functions may otherwise
be lost during a utility block.
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 N1-
J5/ID3. CAUTION! Extra-low voltage!
4) The contactor (K21) for the flange heater (E9) in the hot
water cylinder 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
terminals X2/N and N1-J16/NO10.
5) The contactors mentioned above in points 3 and 4 are
installed in the electrical distribution system. Mains cables
for the installed heaters must be laid and secured in
accordance with the valid standards and regulations.
6) All electrical cables must be installed as permanent wiring.
7) The heat circulating pump (M13) is connected to terminals
X2/N and N1-J13/NO5.
8) The DHW loading pump (M18) is connected to terminals
X2/N and N1-J13/NO6.
9) The return sensor (R2) is integrated into air-to-water heat
pumps for indoor installation.
The connection to the HPM is made at terminals X3/GND
and N1-J2/U2.
10) The external sensor (R1) is connected to terminals X3/GND
and N1-J2/U1.
11) The domestic hot water sensor (R3) is included with the
domestic hot water cylinder and is connected to terminals
X3/ GND and N1-J2/U3.
12) The connection cable (6 m) to the control panel (in the wall
mount) must be guided in the switch box of the heat pump
(through the cable duct) and connected there in accord-
ance with the connection diagram.
7.5.3 Connecting an electronically
regulated circulating pump
Electronically regulated circulating pumps have high starting
currents, which may shorten the service life of the heat pump
manager. For this reason, a coupling relay is installed or must be
installed between the output of the heat pump manager and
the electronically regulated circulating pump. This is not neces-
sary 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 is-
sued by the pump manufacturer.
ATTENTION!
It is not permitted to connect more than one electronically
regulated circulating pump via a relay output.
452165.66.01 · FD 9912
LIH 10TE
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