E Wiring Diagram: Combi Boiler - Vaillant ecoFIT sustain Series Installation And Maintenance Instructions Manual

E Wiring diagram: Combi boiler
2
1
X40 X51 X32
X90
1 Main PCB
2 Interface PCB
3 Timer
4 Temperature sensor on the heating flow
5 Temperature sensor on the heating return
6 Fan
7 Gas valve assembly
0020230529_06 ecoFIT sustain Installation and maintenance instructions
X35
X51
X51
X51 X35
X35
– +
Burner 24V=
off
RT BUS
X2
X20
X30
X21
L
N
X12
RT
230Vac
3
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
3
6
2
20
10
19
11
1
4
X21
3
2
L
X14
N
RT 230Vac
L
X1
N
N
L
L
8 3-port diverter valve
9 Pressure sensor
10 Flow rate sensor
11 External ignition transformer
12 Heating pump
13 Ionisation and ignition electrode
14 Main power supply and connection for 230 V control
4
1 5
2
1
2
6
1
M
2
4
5
3
1
7
8
6
M
4
3
9
1
1
4
3
10
1
3
2
3
2
1
13
12
14
24V
230V~
45