Vaillant ecoFIT pure Series - Wiring Diagram: System Boiler

0020230533_06 ecoFIT pure Installation and maintenance instructions 49
E Wiring diagram: system boiler
X2
X14
L
N
19
10
20
16
2
4
11
13
14
18
7
17
8
X51
X51
X20
16
1
9
3
15
4
5
10
11
6
13
X51
X20
X40 X51
X30
X2
X21
X41
X22
X14
L
N
–
+
24V=
RT BUS
Burner
off
RT
230Vac
X1
FUS
X106
X32
X90
X12
X35
RT 230Vac
N
L
X1
X21
4
1
3
2
eBUS
RT 24V
Burner off
X106
1
3
4
1
3
1
2
3
M
5
4
2
1
2
1
2
1
N
L
L
24V
230V~
24V
230V~
2
6
7
9
8
1
3
4
5
11
10
1 Main PCB
2 Interface PCB
3 Temperature sensor on the heating flow
4 Temperature sensor on the heating return
5 Fan
6 Gas valve assembly
7 Pressure sensor
8 External ignition transformer
9 Heating pump
10 Ionisation and ignition electrode
11 Main power supply and connection for 230 V control