Vaillant ecoTEC VU 466/4 Installation And Maintenance Instructions Manual page 23

Fan
230V~
X13
N
L
X11
X18
Cylinder
charging pump
pink
X6
X1
X41
X22
Fig. 5.15 Connection diagram of ecoTEC (continued)
Installation and maintenance instructions ecoTEC 0020029172_03
Additional relay (e.g. external heating pump)
N
(adjustable in d.26, see table 9.3)
L
N
L
5
4 Boiler enable connection (factory link fitted)
3
N 230 volt mains input
L
9
Optional ext. controller/room thermostat 7-8-9
8
(continuous, analogue)
7
+
Bus connection for optional accesories
-
2
Safety circuit connection
1
0
Earth
1
0
Earth
DCF
DCF connection
RF
Low loss header sensor
AF
External sensor
6
FB
Remote control, circulation pump
Internal pump
Connector for controller accessories
VRC 430
PWM signal, internal pump
Installation 5
Fan
23