Vaillant ecoTEC plus 938 - H Wiring Diagrams; Wiring Diagram, Product with Integrated Domestic Hot Water Generation, ≥ 37 Kw

0020244998_04 ecoTEC plus Installation and maintenance instructions 61
H Wiring diagrams
H.1 Wiring diagram, product with integrated domestic hot water generation, ≥ 37 kW
X18
X51
X20
X1
24V
230V~
24V
230V~
X41
X25
6
5
4
3
2
1
X22
6
5
4
3
5
1
12
4
X2
13
11
14
2
6
3
3
1
4
2
1
3
L
N
X16
L
N
1
2
3
8
17
7
18
6
4
3
1
M
16
4
3
17
5
7
8
5
4
2
1
Masse
PWM
Hallsignal
+24V
15
2
13
12
Burner Off BUSRT 24V
X100
12
6
9
4
2
10
1
11
3
5
1
2
7
8
2
4
X24
17
3
X30
X40 X51 X35
X31
X22
X90
2
1
T2
Fuse
X12
X25
X2
Opt
X16
Fan
X11
X18
CH Pump
B.off RT BUS
X100
X24
X20
X101
X41
5
X51
L
RT
*
N
X11
L
N
1
2
3
2
1
10
21
20
3
4
18
19
14
15
16
13
12
11
8
17
6
7
9
22
10
1 Main PCB
2 Control panel PCB
3 Gas valve assembly
4 Mass flow sensor