Connection Wiring Diagram - Vaillant ecoTEC pro Installation And Maintenance Instructions Manual

8.6

Connection wiring diagram

X51
Display
Connect ion
24 V
230 V~
Ignit ion
t rans-
former
8.3 Wiring diagram for the ecoTEC pro electronics box
Installation and maintenance instructions ecoTEC pro 0020129672_03
8
1 7
7
1 8
1 4
1 3
1 1
X2
3
blue
2
6
4
1 2
5
1
5
7
8
7
1 2
X20
1 3
pink 2
1 5
1 6
4
3
1 7
6
Circulat ion pump remot e cont rol
FB
Ext ernal sensor
AF
X4 1
Flow sensor (opt ional)
RF
Edge
DCF connect ion
DCF
connect or
Eart h
0
1
Eart h
0
Cont act t hermost at / burner off
X1 0 6
24 V DC room t hermost at
Bus connect ion
-
(Cont roller/ room t h. digit al)
+
L
N
X1 8
green
No funct ion *
230 V AC room t hermost at *
RT
L
X1 Mains connect ion
N
t urquoise
1
2
3 M
4
5
6
1
3
4
1
2
3
orange
J
red
J
blue
J
Safet y fuse
Gas valve
+
Int ernal pump *
Appliance eart h
Electrical installation
Divert er valve
Wat er pressure
sensor
Impeller sensor
Warm st art sensor
Flow sensor
Ret urn sensor
1 2 4 5
Fan
Ignit ion
elect rode
* ... variant -dependent
8
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