Electrical Connection; Electrical Installation; Commissioning; Preparatory Steps - Dimplex Sij 75Ter+ Montageanweisung

SIJ 75TER+

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-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 to N1 and
N17 and terminal strip X3. If, due to a wiring error, the line volt-
age 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) are fed from the electricity meter of the
heat pump into the heat pump (see the device information
for supply voltage).
Connection of the mains cable to the control panel of the
heat pump via terminal S1: L1/L2/L3/ and PE.
ATTENTION!
Ensure the rotary field is clockwise when connecting the mains cables (if
the rotary field is not clockwise, the heat pump will not work properly, is
very loud and may cause damage to the compressor).
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 supply voltage of the heat pump manager is generated
from the load voltage
3) The NO contact of the utility blocking contactor (K22) is
looped from terminal strip X3.1/G to terminal X3.1/3. CAU-
TION! 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 (24 V AC) via terminals X3.3/2 and X3.3/GO.
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 (24 VAC) via terminals X3.3/8 and X3.3/GO.
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.
EN-8
7) All cables must be installed as permanent wiring.
8) The heat circulating pump (M13) is connected to terminals
X2: 4/5/6/PE.
9) The DHW loading pump (M18) is connected to terminals X2:
7/8/9/PE
10) The brine or well pump (M11) is connected to terminals X2:
1/2/3/PE.
11) The return sensor (R2) is integrated into heat pumps for in-
door installation.
Connection terminals: X3.2/3 and X3.2/GND.
12) The external sensor (R1) is connected to terminals X3.2/1
and X3.2/GND.
13) The domestic hot water sensor (R3) is included with the do-
mestic hot water cylinder and is connected to terminals
X3.2/4 and X3.2/GND.
8

Commissioning

8.1 Preparatory Steps

Start-up should be carried out in heating operation.
Prior to commissioning, the following items need to be checked:
 All connections of the heat pump must have been made as
described in Chapter 7.
 The heat source system and the heating circuit must have
been filled and checked.
 The strainer must have been fitted in the sole inlet of the
heat pump.
 In the brine and heating circuits all valves that might impair
the proper flow must be open.
 The settings of the heat pump manager must be adapted to
the heating installation in accordance with the instructions
contained in the controller's operating manual.

8.2 Commissioning Procedure

The start-up of the heat pump is effected via the heat pump man-
ager.
ATTENTION!
Commissioning is to be effected in accordance with the installation and
operating manual of the heat pump manager.
452234.66.47 · FD 9403 www.dimplex.de