Safety
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Operating instructions VRC 470 0020116689_00
2
2 Safety
2.1
Safety and warning information
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When operating the VRC 470 controller, take account
of the general safety instructions and the warning
notes that appear before all of the actions.
2.1.1
Classification of warnings
The warning notes are classified in accordance with the
severity of the possible danger using the following dan-
ger signs and signal words:
Danger sign Signal word
Explanation
a
Danger!
Immediate danger to life
or danger of severe
personal injury
e
Danger!
Risk of death from elec-
tric shock
a
Warning!
Risk of minor personal
injury
b
Caution!
Risk of material or envi-
ronmental damage
2.1.2
Structure of warnings
Warning signs are identified by an upper and lower sepa-
rating line and are laid out according to the following
basic principle:
a
Signal word!
Type and source of danger!
Explanation of the type and source of danger
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Measures for averting the danger
2.2
Intended use
The VRC 470 controller is a state-of-the-art appliance
manufactured in accordance with recognised safety
regulations.
Even so, in the event of inappropriate or non-intended
use, damage to the unit and other property may occur.
The VRC 470 controller controls a Vaillant heating sys-
tem in a weather-compensated and time-dependent
manner. The controller is connected to a Vaillant boiler.
The controller can also regulate the hot water produc-
tion of a connected domestic hot water cylinder with or
without circulation.
Any other or additional use is considered to be improper.
The manufacturer/supplier is not liable for any resulting
damage. The owner alone bears any risk.
Observe the operating instructions
Intended use also includes compliance with the operat-
ing manual and all other applicable documents.
2.3
Basic safety instructions
Installation of the device can be only carried out by a
heating engineer. This heating engineer is also responsi-
ble for proper installation and start-up.
Protecting from Legionella
The controller is furnished with an anti-Legionella func-
tion to protect against infection by germs (Legionella).
When the anti-Legionella function is activated, the water
in the domestic hot water cylinder is heated to over
60 °C for at least an hour. The heating engineer acti-
vates the anti-Legionella function on installation of the
controller.
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Ask the heating engineer if he has activated the anti-
Legionella function.
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Ask the heating engineer to explain how the anti-
Legionella function works.
