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INTRODUCTION
0020140122_02 - 05/13
EN
1 Notes on the documentation
1.1 Symbols used
The symbols used in the text are explained below:
Symbol Explanation
i
Symbol that denotes useful tips and information
∙
Symbol for a required action
The warning notes are classifi ed in accordance with the severity
of the possible danger using the following warning signs and
signal words.
Warning symbol Signal word Explanation
a
Danger
Immediate danger to life or risk of
severe personal injury.
e
Danger Risk of death from electric shock.
a
Warning Risk of minor personal injury.
b
Caution
Risk of material or environmental
damage.
1.2 Observe other applicable documents
∙ Observe absolutely all operating and installation instructions
enclosed with the product, for the various parts and
components of the system.
1.3 Storing documents
∙ Pass these instructions and all other applicable documents to
the system user.
The system user should retain these instructions so that they are
available when required.
1.4 Validity of the instructions
These instructions apply exclusively to:
Liste type
Product Article number
VR66 0020135785
2 Safety
All electrical work performed on the equipment must be carried
out by a qualifi ed engineer or Vaillant Group Service engineer.
This equipment must only be installed by a qualifi ed engineer, to
ensure that the applicable regulations and rules are adhered to.
When work on the appliance is completed, perform an operational
test and check for safety in accordance with BS EN 7671.
2.1 General safety advices
∙ Before to read this chapter, also read the general safety advice
of the operating instructions.
2.1.1 Danger to life by electric shock
Touching live connections can cause serious personal injury.
∙ Before carrying out any work on the product, switch off the
power supply.
∙ Secure the power supply against being switched on again.
2.1.2 Danger to life by escaping gas
Incorrect installation can cause leakages and explosion.
∙ Make sure there are no stresses in the gas line.
∙ Correctly position the seals.
∙ Observe the legal directives and the local regulations for gas
supply companies.
2.1.3 Danger to life by escaping fl ue gases due to
unlocked openings
Flue gases can escape through openings in the fl ue pipe.
Inspection chambers in the fl ue gas pipe can be opened.
∙ Open inspection chambers only if you are a competent person.
∙ Close all inspection chambers before start-up.
2.1.4 Danger to life due to missing or not properly
working safety devices
Missing safety devices can cause life-threatening scalding and
other injuries, for example by burst pipes.
The information contained in this document do not show all
schemes required for a professional installation of safety devices.
∙ Install the necessary safety devices in the system.
∙ Inform the user about the function and location of safety
devices.
∙ Observe the relevant national and international laws,
standards and guidelines.
∙ The appliance is not to be used by persons (including children)
with reduced physical, sensory or mental capabilities, or lack
of experience and knowledge, unless they have been given
supervision or instruction.
∙ Children being supervised not to play with the appliance.
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