E Wiring Diagram: System Boiler - Vaillant ecoFIT pure Series Installation And Maintenance Instructions Manual

E Wiring diagram: system boiler
2
1
X40 X51 X32
X90
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
0020230533_06 ecoFIT pure Installation and maintenance instructions
X51
X51
X51
X35
– +
Burner 24V=
off
RT BUS
X2
X20
X30
X21
L
N
X12
RT
230Vac
Burner off
RT 24V
X106
eBUS
13
6
5
10
X20
11
4
15
3
16
1
9
8
17
7
18
14
11
13
X2
4
2
16
20
10
19
8
1
4
X21
3
2
L
X14
N
RT 230Vac
L
X1
N
N
L
L
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
3
1 4
2
1
2
5
1
M
2
4
5
3
1
6
7
1
4
3
3
2
1
10
11
9
24V
230V~
49