Safety 2
0020131957_01 VRT 350 Installation instructions
5
2
Safety
2.1
Required personnel qualifications
This manual is intended for persons with the following quali-
fications.
2.1.1
Authorised competent person
The installation, assembly and removal, start-up, mainten-
ance, repair and decommissioning of Vaillant products and
accessories must only be carried out by authorised compet-
ent persons.
Note
Each competent person is qualified for specific
activities on the basis of their training. They must
only work on units if they have the required quali-
fication.
When working on the units, the competent persons must
observe all applicable directives, standards, laws and other
regulations.
2.2
General safety information
2.2.1
Installation by skilled tradesmen only
The unit must be installed by a qualified, skilled tradesman,
who is responsible for compliance with the applicable re-
quirements, regulations and directives.
▶
Read through these installation instructions carefully.
▶
Carry out the activities that are described in these install-
ation instructions.
▶
During the installation, observe the following safety in-
structions and regulations.
2.2.2
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 electron-
ics box of the boiler.
▶
Disconnect the boiler from the power mains by discon-
necting 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 discon-
nected from the power supply.
2.2.3
Material damage due to unsuitable
installation room
If you are installing the controller in a moist environment, the
electronics may be damaged by moisture.
▶
The controller should only be installed in dry rooms.
