Wiring Diagram, Sensors And Actuators - Vaillant aroTHERM plus VWL 35/6 A 230V S2 Operating Instructions Manual

C.2

Wiring diagram, sensors and actuators

25
24
23
22
M
21
p
20
19
p
18
17
16
15
14
13
12
11
p
10
p
1 HMU PCB
2 Actuation for fan 2, if available
3 Flow rate sensor
4 Connection to the INSTALLER BOARD PCB
5 Heating pump power supply
6 Crankcase heating
7 4-port diverter valve
8 Condensate tray heater
9 Connection to the INSTALLER BOARD PCB
10 Pressure sensor in the low-pressure area
0020330791_00 Installation and maintenance instructions
3 1
X25
4 2
26
X27
1
X21
9 18
X100 / X106
8 17
7 16
6 15
5 14
4 13
3 12
2 11
1 10
X22
10 20
9 19
8 18
7 17
6 16
5 15
4 14
3 13
2 12
1 11
11
12
13
14
15
16
17
18
19
20
1
X24
9 1
10 2
11 3
12 4
13 5
14 6
15 7
16 8
2
6
S20
5
4
S21
3
2
BUS
1
27
L
3
N
2
X16
1
L
4
S
3
N
2
X15
1
L
3
N
2
X11
1
L
3
N
2
X13
1
L
4
S
3
N
2
X14
1
L
4
N
3
X1
2
1
Pressure sensor in the heating circuit
Temperature sensor on the heating flow
Temperature sensor on the heating return
Temperature sensor at the air inlet
Actuation for fan 1
Actuation for the heating pump
Temperature sensor downstream of the compressor
Temperature sensor upstream of the compressor
Pressure switch
Temperature monitor
2
3
4
5
6
7
M
8
9
41