1 Notes on the documentation
2 Description of the appliance
Danger due to high voltage!
Immediate risk of serious injury or
death!
Caution!
Potentially dangerous situations for
the product and environment!
Note
Useful information and instructions.
• Symbol for a necessary task
Note
Please see the terms of use available
on the internet at
http:\\www.vrnetdialog.vaillant.de.
4
2
Description of the appliance
2.1
Intended use
The vrnetDIALOG 820f communication unit is
an electronic accessory for remote parameter
setting, remote diagnosis and alarms on a
boiler or simple controller such as a room
temperature or outdoor temperature control-
ler (not complex control systems) using a
modem connection and the internet.
The boiler and the telephone socket are con-
nected by means of wireless modules.
2.2
CE labelling
The vrnetDIALOG 820f communication unit
complies with the applicable guidelines and
standards when the installation instructions
and manufacturer's instructions are followed.
Installation Manual for vrnetDIALOG 820f