4.4.7 Vaillant optional plug in timer accessories
Refer to the instructions supplied with the optional accessories 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 VR61 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
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