KEY TO SYMBOLS AND SAFETY PRECAUTIONS
6 720 645 222a (2012/05)
3
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.
THESE INSTRUCTIONS ARE APPLICABLE TO THE
WORCESTER APPLIANCE MODEL(S) STATED ON THE
FRONT COVER OF THIS MANUAL ONLY AND MUST NOT
BE USED WITH ANY OTHER MAKE OR MODEL OF
APPLIANCE.
THE INSTRUCTIONS APPLY IN THE UK ONLY AND MUST
BE FOLLOWED EXCEPT FOR ANY STATUTORY
OBLIGATION.
THIS APPLIANCE MUST BE INSTALLED BY A GAS SAFE
REGISTERED, COMPETENT PERSON. FAILURE TO
INSTALL CORRECTLY COULD LEAD TO PROSECUTION.
IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER
TECHNICAL HELPLINE.
DISTANCE LEARNING AND TRAINING COURSES ARE
AVAILABLE FROM WORCESTER.
PLEASE LEAVE THESE INSTRUCTIONS WITH THE
COMPLETED BENCHMARK CHECKLIST, (OR A
CERTIFICATE CONFIRMING COMPLIANCE WITH IS 813,
EIRE ONLY) AND THE USER MANUAL WITH THE OWNER
OR AT THE GAS METER AFTER INSTALLATION OR
SERVICING.
THE BENCHMARK CHECKLIST CAN BE FOUND IN THE
BACK PAGES OF THE INSTALLATION 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
Ø
Diameter
NG
Natural Gas
LPG
Liquid Petroleum Gas
CH
Central Heating
DHW
Domestic Hot Water
PRV
Pressure Relief Valve
NTC
Negative Temperature Coefficient (sensor)
IP
Ingress Protection
RCD
Residual Current Device
TRV
Thermostatic Radiator Valve
WRAS
Water Regulations Advisory Scheme
SEDBUK
Seasonal Efficiency of Domestic Boilers in
the United Kingdom
Tab. 3 Abbreviations
