Installation
Part 4: Installation and Start-up
48
Connection diagram
230 V
∼
Relay switching capacity 2(2)A, 250V
∼
Terminal assignment
ST7 (1+2): DCF antenna
I (1-3):
FBR2 (FBR1) for heating circuit 1
ST1 (2+3): Telephone switch, heating circuit 1
ST1 (4+5): Flow sensor, heating circuit 2
ST1 (6+7): Storage tank sensor
ST1 (7+8): Header sensor
ST1 (9+10): Outdoor sensor
III (1-3):
FBR2 (FBR1) for heating circuit 2
ST3 (2+3): Telephone switch, heating circuit 2
ST9 (1+2): Data line CAN bus
ST9 (3+4): Power supply CAN bus
II (1):
Neutral conductor, mains
II (2):
Power supply, unit
II (3):
Power supply, relay
II (4):
Pump, heating circuit 1 / header pump
II (5):
Pump, heating circuit 2
II (6):
Cylinder charging pump /
Switching valve
Hot water heat generator
II (7):
Mixer, heating circuit, open
II (8):
Mixer, heating circuit, closed
II (10) + VI (1):
HS stage 1
VI (2) + IV (1):
HS stage 2
IV (2+3):
HS stage 3
IV (4+5):
HS stage 4
1
2
4
1
2
1
2
3
4
5
3
5 6
7 8
9 10
M
Bus
H
L
+ -
IX
II
VI
IV
III
I
VII
H
1
H
2
H
3
H
4
2
1
+
-
DCF
FBR
3 2
VF
KF/SPF
AF
3 2
FBR
2
3
4
2 1
3
2 1
3 2
1
4
5
6
7
8
9
10
2 1