Vaillant VR 51 User manual

Operating and installation instructions
GB, IE
Room thermostat
VR 51
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. [phone] Fax [phone]
[e-mail] www.vaillant.de

2Operating and installation instructions 0020248975_01
Contents
Contents
1 Safety ..............................................................................4
1.1 Action-related warnings ..............................................4
1.2 Intended use...................................................................5
1.3 General safety information.........................................6
2 Notes on the documentation...................................9
2.1 Observing other applicable documents...................9
2.2 Storing documents........................................................9
2.3 Validity of the instructions .........................................9
3 System and product description...........................10
3.1 Component of the ambiSENSE system.................10
3.2 Design of the product ..................................................11
3.3 Display.............................................................................12
3.4 Radio operation ............................................................14
3.5 Flashing sequence of the signal LED ......................15
3.6 Duty cycle limit .............................................................17
3.7 CE marking.....................................................................19
3.8 Checking the scope of delivery.................................19
4 Integration into the ambiSENSE system..........20
4.1 Pairing............................................................................20
5 Set-up............................................................................22
5.1 Defining the installation site ....................................22
5.2 Installing the room thermostat................................23
6 Operation......................................................................30
6.1 Changing the operating mode .................................30
6.2 Setting the temperature............................................30

3
Operating and installation instructions 0020248975_01
Contents
6.3 Using the Boost function............................................31
6.4 Activating/deactivating the operation lock ..........32
7 Troubleshooting..........................................................32
7.1 Detecting and rectifying faults................................32
7.2 Command not confirmed...........................................33
7.3 Resetting to factory setting......................................34
8 Care and maintenance.............................................37
8.1 Caring for the product...............................................37
8.2 Changing batteries......................................................38
9 Decommissioning.......................................................42
9.1 Decommissioning the product.................................42
9.2 Recycling and disposal...............................................43
10 Customer service ......................................................43
11 Technical data............................................................ 44

4Operating and installation instructions 0020248975_01
a
Safety
a1
1 Safety
1.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified
in accordance with the severity of the pos-
sible danger using the following warning
signs and signal words:
Warning symbols and signal words
aDanger!
Imminent danger to life or risk of
severe personal injury
eDanger!
Risk of death from electric
shock
aWarning.
Risk of minor personal injury

Operating and installation instructions 0020248975_01 5
aSafety a
1
bCaution.
Risk of material or environmental
damage
1.2 Intended use
In the event of inappropriate or improper
use, damage to the product and other
property may arise.
You can use the room thermostat for the
time-controlled regulation of individual
rooms.
Intended use includes the following:
– observance of accompanying operating,
installation and servicing instructions
for the product and any other system
components
– installing and fitting the product in
accordance with the product and
system approval
– compliance with all inspection and
maintenance conditions listed in the
instructions.

6Operating and installation instructions 0020248975_01
a
Safety
a1
Intended use also covers installation in
accordance with the IP class.
Any other use that is not specified in these
instructions, or use beyond that specified
in this document shall be considered
improper use. Any direct commercial or
industrial use is also deemed to be
improper.
Caution.
Improper use of any kind is prohibited.
1.3 General safety information
1.3.1 Danger caused by improper
operation
Improper operation may present a danger
to you and others, and cause material
damage.
>Carefully read the enclosed instructions
and all other applicable documents, par-
ticularly the “Safety” section and the
warnings.

Operating and installation instructions 0020248975_01 7
aSafety a
1
>Only carry out the activities for which
instructions are provided in these oper-
ating instructions.
1.3.2 Risk of material damage
caused by frost
>Do not install the product in rooms
prone to frost.
1.3.3 Danger caused by a
malfunction
>Install the product such that room air
can circulate freely around the product,
and it is not covered by furniture, cur-
tains or other objects.

8Operating and installation instructions 0020248975_01
a
Safety
a1
1.3.4 Risk of material damage
caused by unsuitable
environmental conditions
The electronics may be damaged if you
install the product in an unsuitable envi-
ronment.
>Only install the product in dry, dust-free
rooms.
>Ensure that the product is not exposed
to constant solar or heat irradiation,
vibrations or mechanical loads.
1.3.5 Regulations (directives, laws,
standards)
>Observe the national regulations, stand-
ards, guidelines and laws.

Operating and installation instructions 0020248975_01 9
aNotes on the documentation a
2
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.
2.2 Storing documents
>Keep this manual and all other applica-
ble documents safe for future use.
2.3 Validity of the instructions
These instructions apply only to:
Product article number
VR 51 0020247923

System and product description
10 Operating and installation instructions 0020248975_01
3
3 System and product
description
3.1 Component of the ambiSENSE
system
The product is part of the ambiSENSE
room climate solution and communicates
via a radio protocol. All products in the
ambiSENSE room climate solution can be
configured via the VRC 700 app using a
smartphone.
You can use the room thermostat with air-
humidity sensor for the time-controlled
regulation of the room temperature via
the VRC 700 app and adjust the heating
times to your individual needs.
The product is easily paired to the VR 920
Internet gateway in order to control one or
several ambiSENSE VR 50 radiator ther-
mostats. The room thermostat measures
the temperature and air humidity in the
room, and forwards this to the radiator