preface
6720813172 (2015/04)2
preface
Please read these instructions carefully
These instructions are applicable to the Worcester, Bosch Group boiler
model stated on the front cover only.
These instructions apply in the UK/IE only and must be followed except
for any statutory obligation.
After installation please leave this User instruction Manual, Installation,
Commissioning and Servicing Instructions and completed Benchmark
Checklist with the user.
Dedicated to heating comfort
Thank you for purchasing a Worcester GB162 gas-fired condensing
boiler manufactured by Worcester, Bosch Group. The company prides
itself on manufacturing boilers to the strictest quality control standards
throughout every stage of production.
Worcester, Bosch group has led the field in innovative boiler design and
performance for over 50 years. This heritage means all our products are
of exceptional quality and proven reliability.
The Worcester commercial range in particular is extremely energy
efficient, offering you economical running costs and value for money.
There is also the reassurance of our no-nonsense 2 years parts and
labour guarantee.
Contents
1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 2
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Energy efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Overview of the BC10 basic controller . . . . . . . . . . . . . . . . . . . 4
5 Service Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6 Maintaining your Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7 Explanation of the control unit . . . . . . . . . . . . . . . . . . . . . . . . . . 5
7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8 Operating the heating system . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1 Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1.1 Normal Operation menu . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8.1.2 Manual Operation menu . . . . . . . . . . . . . . . . . . . . . . . . . . 6
9 Extreme Cold Weather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
10 Display information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
10.1 Display readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
10.2 Display codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
10.2.1 Fault or Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
10.3 Identifying and resetting faults . . . . . . . . . . . . . . . . . . . . 9
11 Tips on energy saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
12 Environment / disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
13 Your Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
Keywords indicate the seriousness of the hazard in terms of the
consequences of not following the safety instructions.
• NOTICE indicates that material damage may occur.
• CAUTION indicates that minor to medium injury may occur.
• WARNING indicates that serious injury may occur.
• DANGER indicates possible risk to life.
Important information
Additional symbols
1.2 safety precautions
INTENDED USE
This boiler is only to be used to heat heating system water and for the
domestic hot water (DHW) supply e. g. in residential and light
commercial properties. It can also be integrated into a cascade system
(where several boilers are interconnected).
The boiler has been factory-fitted with the BC10 basic controller and the
“Universal Burner Automat 3” (UBA 3).
Warnings 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.
Important information in cases where there is no risk of
personal injury or material losses is identified by the
symbol shown on the left. It is bordered by horizontal
lines above and below the text.
Symbol Meaning
▶ a step in an action sequence
a reference to a related part in the document or to other
related documents
• a list entry
– a list entry (second level)
Table 1
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