Vaillant VR 920 Manual Del Usuario página 85

Installation of the built-in version by the competent person 4
B
10. Open the electronics box at the points provided for this
(A).
11. Hinge the electronics box's cover open (B).
12. Connect the power supply plug for the communication
unit to terminal X12 on the boiler's electronics in the
electronics box.
13. Close the electronics box's cover until you hear it click
into place.
0020266269_00 Operating and installation instructions
A
X11
X18
T2
X101
X12
1
B
14. Connect the extension cable for the power supply from
the bag of small parts (1) to the power supply unit in the
retaining box (A).
15. Route the extension cable for the power supply in the
retaining box's cable duct (B).
A
16. Guide the eBUS cable and the power supply cable
through the grommet provided for it in the boiler's floor
plate (A).
17. If required, remove the plug for the eBUS cable and
connect it after completing the process.
Note
You do not have to observe the polarity.
18. Ensure that the ferrite core is located on the power sup-
ply cable within the boiler.
19. Hinge the boiler's electronics box back up until you hear
it click into place (B).
20. Ensure that the lines that come from the retaining box
are located behind the electronics box and do not be-
come jammed.
A
B
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