5Operating Manual VRC 430 0020042468_02
1 Notes on the documentation
The following information is intended to help you work
through the documentation. Additional documents apply
in combination with this operating manual.
We accept no liability for any damage caused by failure
to observe these instructions.
Other applicable documents
– The installation instructions for the Vaillant controller
VRC 430 (Section 2 of this document For the expert
technician:
– The operating and installation manual for your heat-
ing system
– All instructions for accessory components
Glossary:
At the end of this document, in the appendix, you will
find an explanation of technical terms and important
functions listed in alphabetical order.
1.1 Storing of the documents
Please store this operating manual and all related docu-
ments in such a way that they are available whenever
required.
1.2 Symbols used
Please observe the safety instructions in this manual
when operating the unit.
e
Danger!
Danger of death by electrocution!
d
Danger!
Immediate risk of serious injury or death!
H
Caution!
Danger of burning and scalding!
a
Caution!
Potentially dangerous situation for the product
and environment!
h
Note!
Useful information and instructions.
⇒ Symbol indicating a required task
1.3 Applicability of the manual
This operating manual applies exclusively to units with
the following article number:
0020028520 VRC 430
The article number of your unit can be obtained from
your expert technician.
1.4 CE label
The CE mark documents the fact that the Vaillant con-
troller VRC 430 fulfils the fundamental requirements of
the relevant guidelines.
2 Safety
The VRC 430 may only be installed by a suitably quali-
fied expert technician. This engineer also assumes re-
sponsibility for properly installing and starting up the
unit.
H
Caution!
Risk of being scalded by hot water!
At the draw-off locations for the hot water
there is a danger of scalding at temperatures in
excess of 60 °C. Young children and elderly
persons can be in danger even at lower temper-
atures.
Select the set target temperature to prevent
injury to all persons (see section 4.7.4).
Caution!
Risk of being scalded by hot water!
If your expert technician has activated the
anti-legionella function for your domestic hot
water cylinder, the hot water at certain draw-
off points may reach temperatures above
60 °C.
Contact your technician to find out if this func-
tion has been activated, and if so, for which
days and times.
Notes on the documentation 1
Safety 2