F Connection Diagram: Combination Unit (35 Kw) - Vaillant home combi Installation And Maintenance Instructions Manual

F Connection diagram: Combination unit (35 kW)
2
1
X40 X51 X32
X90
1 Main PCB
2 Interface PCB
3 Timer
4 Control system
5 Temperature sensor in the heating flow
6 Temperature sensor in the heating return
7 Fan
8 Gas valve
0020224355_00 HOME 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
X106
4
eBUS
13
6
5
10
X20
11
4
1 8
15
2 7
3
4 6
16
5 5
1
9
8
17
7
18
14
11
13
X2
3
6
2
20
10
19
L
X14
N
L
X12
N
12
L
X21
N
X1
N
N
L
L
15
9 3-way valve
10 Pressure sensor
11 Volume flow sensor
12 Ionisation electrode
13 Heating pump
14 Ignition electrode
15 Main power supply
Appendix
5
6
1
2
1
2
7
1
M
2
3
4
3
1
8
9
6
M
4
3
10
1
1
4
3
11
1
3
2
3
2
1
24V
230V~
13
14
39