ROBUA QAC34/101, Installation Manual

Page: 19 / 48

Assembly and installation
Installation manual – System controller
19
2
2.6 THE K18 UNIT
For installation considerations, refer to the Installation,
use and maintenance manual of the specific mode of K18
unit.
For convenience we include the terminal block details for
the electrical hookup here.
Figure 2.14
Terminal block for electrical connections of K18 unit
1 Connection to CSK18 enclosure (see Paragraph 3.6 p. 26)
2 Modbus connection to RS485 port for optional monitoring
3 GHP' temperature sensor connection (see Paragraph 3.7 p. 27)
4 GHP temperature sensor connection (see Paragraph 3.7
p. 27)
5 Connection of 0-10 V signal on the optional external water pump
(only for K18 Simplygas C0 models; see manual of specific K18
unit used)
6 Optional auxiliary boiler connection (only for K18 Simplygas
models; see Paragraph 3.8
p. 27)
7 Supply connection on the optional external water pump (only for
K18 Simplygas C0 models; see manual of specific K18 unit used)
8 Power connection (see K18 unit manual)
9 Earth connections for signal cable shielding
K18 CONTROL CABLE
AUX
PROBE 2
AUX
PROBE 1
RS485
230V W. PUMP
N
L
ON/OFF
N
L
+10
0
T1
0
W. PUMP
+10
T1
COM
B
A
T2
T2
GND
0
AL
AL
+10
DHW
REQ
RES
+ AL
0 AL
AUX
BOILER
AUX
BOILER
AUX
BOILER
1
2
9
3
4
9
5
6
7
8