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SIH 90TU
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 domes-
tic 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 ter-
minals X2/N and X2/K21.
6)
The contactors mentioned above in points 3, 4 and 5 are in-
stalled in the electrical distribution system. Mains cables for
the installed heaters must be laid and secured in accord-
ance with the valid standards and regulations.
7)
All installed electric cables must have permanent wiring.
8)
The heat circulating pump (M13) is activated via the contact
N1-J13/NO5. The connection points for the pump are
X2/M13 and X2/N. When using pumps where the switching
capacity exceeds the output, a coupling relay must be inter-
posed.
9)
The auxiliary circulating pump (M16) is activated via the con-
tact N1-J16/NO9. The connection points for the pump are
X2/M16 and X2/N. A coupling relay is already integrated in
this output.
10) The domestic hot water circulating pump (M18) is activated
via the contact N1-J13/NO6. The connection points for the
pump are X2/M18 and X2/N. When using pumps where the
switching capacity exceeds the output, a coupling relay must
be interposed.
11) The brine or well pump (M11) is activated via the contact N1-
J12/NO3. The connection points for the pump are X2/M11
and X2/N. A coupling relay is already integrated in this out-
put.
12) The return sensor (R2) is integrated in the heat pumps for in-
door installation.
The heat pump manager is connected via the following ter-
minals: X3/GND and X3/R2.
13) The external sensor (R1) is connected to terminals X3/GND
and X3/R1.
14) The domestic hot water sensor (R3) is included with the do-
mestic hot water cylinder and is connected to terminals GND
and X3/R3.
The mains cable should be fed through the guide tubes into the
switch box at the side and secured with the strain relief.
EN-8
7.5.3 Connection of electronically
regulated circulating pumps
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.
8
Commissioning
8.1 General Information
To ensure that commissioning is performed correctly, it should
only be carried out by an after-sales service technician author-
ised by the manufacturer. This may be a condition for an addi-
tional guarantee (see warranty service).
8.2 Preparation
The following items must be checked prior to commissioning:
All of the heat pump connections must be installed as de-
scribed in chapter 7.
The heat source system and the heating circuit must have
been filled and checked.
The dirt trap must be inserted in the brine inlet of the heat
pump.
All valves that could impair proper flow in the brine and heat-
ing circuits must be open.
The heat pump manager must be adapted to the heating
system in accordance with the controller's operating instruc-
tions.
8.3 Commissioning procedure
The heat pump is commissioned via the heat pump manager.
ATTENTION!
Start-up must be performed in accordance with the installation and
operating instructions of the heat pump manager.
452234.66.54 · FD 9401
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