18
X4
X3
+24V
0V
3
4
NO
3
4
NO
3
4
NO
G
Br
G
Br
O
G
QF24
gG 2A
QFP
gG 2A
2
1
20 A
4
3
6
5
8
7
KM P
M
X2
R
R
R
R
R
R
Br
Bk
Bk
Bk
Bk
Bk
Bk
Bk
V
R
R
R
Br
Br
Br
Br
Br
Br
Br
Br
Br
Y/Gr
B
B
Y/Gr
B
B
B
B
B
Br
Br
1
3
2
4
1.
Pump
2. Power switch/Mode selector
3.
60°C high limit switch (auto reset)
4.
96°C high limit switch (manual reset)
5. USB socket
6. Controller
7.
24V transformer
8.
HMI power supply
9.
HMI Modbus
10. Pump PWM
11. Return temp. sensor
12. Supply circuit temp. sensor
13. Water pressure sensor
CONTROL WIRING DIAGRAM
EN
Technical Specifications