Vaillant VR 920 Operating And Installation Instructions page 89

Installation of the built-in version by the competent person 4
10. Hinge the boiler's electronics box back up until you hear
it click into place.
C
11. Install the boiler's front casing (A).
12. Push the front casing down against the boiler until it
clicks into place (B).
13. Use the screw to secure the front casing (C).
0020266269_00 Operating and installation instructions
A
B
14. Connect the boiler to the power supply.
15. Hand the product over to the end user.
4.6 Replacing the retaining box
Danger!
Risk of death from live connections
(230 V)!
Risk of death from electric shock when work-
ing on live connections (230 V).
▶
Disconnect the power supply to the
product before commencing any work on
it.
▶
Secure the power supply against being
switched on again.
▶
Check that there is no voltage in the con-
nections.
Caution.
Incorrect installation
Incorrect installation may cause material
damage.
▶
Only carry out the installation if you are
a certified expert partner and you take
responsibility for the installation and initial
start-up.
Note
The retaining box for the communication unit is
available as a spare part. The associated article
number is 0020236459.
87