Vaillant sensoNET VR 921 Instrucciones De Instalación página 28

1 Safety
– Dismantling
– Installation
– Start-up
– Inspection and maintenance
– Repair
– Decommissioning
▶ Proceed in accordance with
current technology.
Validity: Russia
The competent person must be
authorised by Vaillant Group
Russia.
1.3 Risk of death from electric
shock
There is a risk of death from
electric shock if you touch live
components.
Before commencing work on
the product:
▶ Unplug the mains plug.
▶ Or disconnect the product
from the power supply by
switching off all power sup-
plies (electrical partition with a
contact gap of at least 3 mm,
e.g. fuse or circuit breaker).
▶ Secure against being
switched back on again.
▶ Wait for at least 3 minutes
until the capacitors have dis-
charged.
▶ Check that there is no
voltage.
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1.4 Qualification
Only qualified electricians may
carry out the electrical installa-
tion.
1.5 Risk of material damage
caused by using an
unsuitable tool
▶ Use the correct tool.
1.6 Observing the safety
information
Validity: Russia
OR Ukraine
▶ Observe the safety informa-
tion in the section "Country-
specific information".
1.7 Safety warning – Power
supply unit
▶ Only use the power supply
unit indoors.
▶ Do not operate the power
supply unit in wet environ-
ments or in the rain.
▶ If the power supply unit has
visible damage or is defect-
ive, you must not operate it.
▶ Keep the power supply unit,
its individual parts and the
packaging material away from
children.
▶ Only connect the power sup-
ply unit if the mains voltage
for the plug socket matches
Installation instructions 0020285487_02