And Boiler Terminal Strip; Connection Details Using The Vr; And Vr 61 Control Centre - Vaillant ecoTEC plus Instructions For Installation And Servicing

4 Boiler installation sequence
4.4.6 Connection details for external switches and
boiler terminal strip.
20 VDC
7 8 9 L N
Do not use
7, 8, 9 in UK!
Note: All cables
connected to the
appliance should
be permanently
fixed to the wall!
* Remove link if
external 230v
controls are to
be fitted
E
230 Vac 50 Hz permanent supply
Fig.4.11 Mains Supply and External Controls
4.4.7 Vaillant optional plug in timer accessories
Refer to the instructions supplied with the optional ac-
cessories for connection details. Upon completion of all
electrical connections refit the terminal box cover by
pushing into place. The cover is secured by two locking
clips.
4.4.8 Connection details using the VR 65 and
VR 61 control centre
The Control Centre VR 65 and VR 61 are eBUS system
components. In a storage unit cylinder installation, they
are responsible for the communication between the
ecoTEC plus boiler and external 2- or 3-way-valves. Con-
nect the VR 65 or VR61 Control Centre as described in its
enclosed manual.
Note!
h
When using a VR61 an optional wiring harness
plug is available from Vaillant technical (Tele-
phone 01634 292 392) to allow easy connection
of the domestic hot water demand direct to the
boiler. If using in conjunction with Solar and a
VR68 this plug is not required.
26
heating pump connection
3 4 5
L N
N
230 Vac system
controls
• Zone valve
• programmer
• room thermostat
• cylinder thermostat
junction box
3 amp fuse
double pole
isolator
N L
Instructions for installation and servicing ecoTEC plus 0020020828_07