KEY TO SYMBOLS AND SAFETY PRECAUTIONS | 3AU/NZ
6 720 646 195a (2010/11)
1 KEY TO SYMBOLS AND SAFETY PRECAUTIONS
1.1 Explanation of symbols
Warning symbols
Signal words indicate the seriousness of the hazard in
terms of the consequences of not following the safety
instructions.
• NOTICE indicates possible damage to property or
equipment, but where there is no risk of injury.
• CAUTION indicates possible injury.
• WARNING indicates possible severe injury.
• DANGER indicates possible risk to life.
Important information
Additional symbols
SYMBOLS USED IN THIS MANUAL
PLEASE READ THESE INSTRUCTIONS CAREFULLY
BEFORE STARTING INSTALLATION.
This installation manual is only applicable to the model
of boiler stated on the front cover of this manual.
This boiler must be installed by an authorised person
only. Failure to install this boiler correctly could lead to
prosecution.
If you are in any doubt contact the Robert Bosch
technical hotline on:
1300 30 70 37 AU or 0800 54 33 52 NZ
Please leave these instructions, completed installation
checklist and user manual with the customer after
installing the boiler.
The checklist can be found in the back pages of this
manual.
Abbreviations used in this manual:
Safety instructions in this document are
framed and identified by a warning triangle
which is printed on a grey background.
Electrical hazards are identified by a
lightning symbol surrounded by a warning
triangle.
Notes contain important information in
cases where there is no risk of personal
injury or material losses and are identified
by the symbol shown on the left. They are
bordered by horizontal lines above and
below the text.
Symbol Meaning
B a step in an action sequence
Æ a reference to a related part in the
document or to other related documents
• a list entry
– a list entry (second level)
Tab. 1 Symbols
Domestic hot water
Central heating
Hot water storage cylinder
Domestic cold water supply
Electrical supply
Gas supply
Tab. 2 Commonly used symbols
ØDiameter
NG Natural gas
LPG Liquefied petroleum gas
CH Central heating
DHW Domestic hot water
PCB Printed circuit board
PRV Pressure relief valve
NTC Negative temperature coefficient (sensor)
IP Ingress protection
RCD Residual current device
TRV Thermostatic radiator valve
approx. Approximate
BSP British standard pipe
pH Potential hydrogen
PVC Poly vinyl chloride
RSF Room sealed flue
kPa kilo Pascals
Tab. 3 Abbreviations
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