General Safety Information - Vaillant VRT 350f Installation Manual

Intended use also covers installation in ac-
cordance with the IP code.
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 Risk caused by inadequate
qualifications
The following work must only be carried out
by competent persons who are sufficiently
qualified to do so:
– Set-up
– Dismantling
– Installation
– Start-up
– Inspection and maintenance
– Repair
0020131978_02 Installation instructions
– Decommissioning
▶ Proceed in accordance with current tech-
nology.
1.3.2 Risk of death from live connections
When working in the electronics box of the
boiler, there is a risk of death from electric
shock. Continuous voltage is present on the
mains connection terminals, even if the main
switch is turned off.
▶ Switch the main switch off before working
on the electronics box of the boiler.
▶ Disconnect the boiler from the power
mains by disconnecting the mains plug or
by de-energising the boiler via a partition
with a contact opening of at least 3 mm (e.
g. fuses or power switches).
▶ Check that the boiler is de-energised.
▶ Secure the power supply against being
switched on again.
▶ Open the electronics box only when the
boiler is disconnected from the power sup-
ply.
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