D Connection Diagrams; Product Connection Diagram With Integrated Hot Water Generation - Vaillant ecoTEC pro Installation And Maintenance Instructions Manual

Appendix
D Connection diagrams
D.1

Product connection diagram with integrated hot water generation

2
X40 X51
X30
X90
1
1 Main PCB
2 Operator control panel PCB
3 Outside temperature sensor, flow temperature
sensor (optional, external), DCF receiver
4 Circulation pump remote control
5 Gas valve
6 Return temperature sensor
7 Flow temperature sensor
8 Fan
09 Contact thermostat/burner off
38
X51
X51
X31
X20
X35
X22
X2
X106
X18
T2
X1
X12
4
X22
2
1
2
3
X41
4
5
6
2
15
12
13
8
X20
7
5
17
3
4
16
X106
18
7
17
8
14
13
X2
11
3
2
6
4
12
L
X18
N
*
RT
L
X1
N
10 24 V DC room thermostat
11 Bus connection (digital room thermostat/controller)
12 Diverter valve
13 Water pressure sensor
14 Impeller sensor
15 Warm start sensor
16 Internal pump
17 Ignition electrode
* Depending on product type
Installation and maintenance instructions ecoTEC pro 0020209589_01
3
4
5
6
7
1 +24V
2 Hallsignal 8
4 PWM
5 Masse
9
10
11
1
12
M
3
4
6
1
13
3
4
14
1
2
3
15
24V
230V~
16
17