Electrical Connection; Electrical Installation; Connecting An Electronically Regulated Circulating Pump - Sixmadun SMLI-XP-15TE Montage- Und Gebrauchsanweisung

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-J7; N1-J9 to N1-J11; N1-J24 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 electric supply cable for the output section of the heat
pump (up to 4-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).
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).
When connecting the device, ensure that the incoming sup-
ply has a clockwise rotating field L1; L2; L3.
ATTENTION!
Ensure that there is a clockwise rotating field: Operating the compressor
in the wrong rotational direction may cause damage to the compressor.
For detailed information, refer to the circuit diagrams in the
appendix.
2) The three-core electric 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
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 (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
X2/N and N1-J16/NO10.
6) The contactors mentioned above in points 3 and 4 are in-
stalled in the electrical distribution system. The mains cable
for the installed pipe heater must be laid and secured in ac-
cordance with the valid standards and regulations.
7) All installed electric cables must have permanent wiring.
8) The heat circulating pump (M13) is connected to terminals
X2/N and N1-J13/NO 5.
9) The DHW loading pump (M18) is connected to terminals X2/
N and N1-J13/NO 6.
10) The return sensor (R2) is integrated into air-to-water heat
pumps for indoor installation.
The connection to the HPM is at terminals X3/GND and N1-
J2/B2.
11) The external sensor (R1) is connected to terminals X3/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 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. A coupling relay is therefore installed or must be installed
between the output of the heat pump manager and the electron-
ically regulated circulating pump. This is not necessary if the
maximum permissible operating current of the heat pump man-
ager of 2 A and the maximum permissible starting current of the
heat pump manager of 12 A are not exceeded by the electroni-
cally regulated circulating pump or a relevant 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.
452160.66.50 · FD 9302
SMLI-XP-15TE
EN-9