2 Notes on the
documentation
2.1 Observing other applicable
documents
▶
You must observe all the operating and
installation instructions included with the
system components.
▶
Observe the country-specific notes in
the Country Specifics appendix.
2.2 Validity of the instructions
These instructions apply only to:
Product article number
VR 921
3 Product description
3.1 CE marking
The CE marking shows that the products
comply with the basic requirements of the
applicable directives as stated on the de-
claration of conformity.
The manufacturer hereby declares that the
type of radio equipment that is described
in these instructions complies with Direct-
ive 2014/53/EU. The complete text for the
EU Declaration of Conformity is available
at: http://www.vaillant-group.com/doc/doc-
radio-equipment-directive/.
3.2 Recycling and disposal
If the product is identified with this
symbol, it does not belong with the house-
hold waste at the end of its useful life.
▶
Instead, take the product to a collection
point for recycling waste electrical or
electronic equipment.
18
0020260965,
0020282696
For more information on where to take
waste electrical and electronic equipment,
contact your town or district authorities or
your waste recycling centre.
3.3 Symbols on the data plate
Symbol
Meaning
Protection class III
4 Installation
4.1 Checking the assembly and
installation prerequisites
▶
Check:
– WLAN signal available (if operation
with WLAN is selected)
– LAN cable available (if operation with
LAN is selected)
4.2 Observing the installation
steps
1.
Observe the installation steps in the
illustrated instructions at the end of
this document.
Condition: The boiler is not installed in a wet environ-
ment (area B):
▶
Install the product as shown in im-
age 1.1.
Condition: The boiler is installed in a wet environ-
ment (area A):
▶
Install the product as shown in im-
ages 2.1 to 2.4:
▶
Install the product on a wall in a room
that is not a wet environment (area B).
▶
Connect the product to the boiler using
the extension cable (accessory, article
number 0020284732).
Condition: You install the product in a hybrid system
or a cascade:
▶
Install the product as shown in im-
ages 3.1 to 3.5.
Installation instructions 0020286833_04