Appendix
0020257297_02 aroTHERM Installation and maintenance instructions
75
29
Temperature sensor, heating return
30
Drain valve
31
Expansion vessel
C
Wiring diagram
C.1
Wiring diagram, part 1a, for connection 1~/230 V
1~/230V
1
2
3
4
5
5
4
3
2
1
S20
S21
BUS
eBUS
+
-
5
6
3
4
1
2
3
4
1
2
N
L
L
N
1
2
L
N
L1
L2
L3
N
L1
L2
L3
N
3
2
1
L
N
3
2
1
L
N
X211
X210
X200
X201
X206
X214
X213
X212
3
2
1
L
N
2
3
1
11
10
4
5
6
9
8
7
12
1
INSTALLER BOARD PCB
2
Power supply connection
3
Bridge, depending on the type of connection (energy
supply company lockout)
4
Input for limit thermostat, not used
5
Input S21, not used
6
eBUS line connection
7
Connection to the HMU PCB
8
Power supply for fan 2 (only for product VWL 105/5
and VWL 125/5)
9
Power supply for fan 1
10
Compressor
11
INVERTER assembly
12
Range for the safety extra-low voltage (SELV)
Summary of Contents for aroTHERM Series
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