Background Information; Technical Data - Vaillant sensoNET VR 921 Installationsanleitung

– Data about the product (serial number,
unit type, unit ID, etc.)
– Data about the firmware (firmware ver-
sion, update status, etc.)
– Data about the connected heating sys-
tem (serial numbers, unit types, unit IDs,
firmware versions, etc.)
A local network connection is the pre-
requisite in order to connect the product
with EEBUS-compatible products from
third-party providers. To start up the
products, the corresponding app must be
used.
When using EEBUS solutions from third-
party providers, the third-party provider's
T&Cs and Privacy Policy also apply with
regard to the collection and processing
of their data. The product manufacturer
has no influence on this and assumes no
liability for this.

4.7 Background information

For further information on the product and
the system (EEBus, system information,
etc.), you can call up the following website:
– www.vaillant.com/homecomfort
5 Repair
5.1 Replacing the power supply
unit
▶
If you replace the power supply unit,
only use the original power supply unit
from the manufacturer (article number
0020116923 or 0020259111).
Note
The VRA 42 power supply unit
must only be used if the power
supply unit can be correctly in-
stalled in the boiler's electronics
box.
36

6 Technical data

6.1 Technical data –
Communication unit
Note
* Not applicable for article number
0020260964 and not applicable for
Russia/Ukraine.
** Applies for use with the connec-
tion cable for the direct connection
to the heat generator.
Rated voltage
Requirement for the
power supply **
Radio frequency bands
*
WLAN radio frequency
band
Radio frequency output
at 868.0 – 868.6 MHz
(max. e.r.p.)*
Radio frequency output
at 869.4 – 869.65 MHz
(max. e.r.p.)*
WLAN radio frequency
output (max. e.r.p.)
WLAN channels
Wi-Fi encryption
IP assignment
Power consumption
(average)
Maximum envirno-
mental temperature
Low-voltage wire (bus
line) – cross-section
Ethernet cable (LAN)
Height
Width
Depth
IP rating
Protection class
Permitted degree of
environmental pollution
Installation instructions 0020285487_05
5 to 24 V
ES1 or PS1 in
accordance with
IEC 62368-1
868.0–868.6 MHz,
869.4–869.65 MHz
2.4 GHz
6.6 dBm
6.9 dBm
17.5 dBm
1 – 13
WPA2-PSK1 – 13
DHCP
3.0 W
50 ℃
≥ 0.75 mm²
min. Cat 5
96 mm
122 mm
36 mm
IP 21
III
2