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Installation of the built-in version by the competent person 4
3.5
Versions of the product
The VR920 communication unit can either be purchased
separately or is included in the scope of delivery for the
ecoTEC exclusive boiler. If the communication unit is
purchased together with an ecoTEC exclusive, it is supplied
within the boiler and is referred to as the "VR920 built-in"
version in the following text. If the communication unit is
purchased separately, it is installed beside the boiler using a
wall bracket and is connected to the boiler via eBUS.
1. Built-in version
Nomenclature
Article number
VR920
0020252926
2. Separate version
Nomenclature
Article number
VR920
0020252922
0020252923
0020252924
4
Installation of the built-in version by
the competent person
4.1
Observing the safety information
▶
Observe the safety warnings in the other applicable doc-
uments.
4.2
Scope of delivery
The following bag of small parts is contained in the boiler's
top packing material.
0020266269_00 Operating and installation instructions
eBUS
1
Enclosure containing
printed documents
4.3
1.
If you want to use a WLAN and radio link, remove the
product from the boiler (→ Page 81).
2.
If you want to use the product with a LAN connection,
connect the product via LAN (→ Page 85).
4.4
3
2
3
Work being passed on
Removing the product from the boiler (for
WLAN/radio use)
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.
1
2
Power supply extension
cable
Retainer
81
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