Table Of Contents - Worcester GREENSTAR CDi CLASSIC User Instructions

preface
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 Greenstar gas-fired condensing
regular 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 more than 50 years. This heritage
means all our products are of exceptional quality and proven
reliability.
The Greenstar range in particular is extremely energy efficient,
offering you economical running costs and value for money. It
sits in SEDBUK Band A, and is therefore amongst the top
energy rated boilers available.
There is also the reassurance of our no-nonsense 2 years parts
and labour guarantee - backed up by Worcester Total Cover, an
optional complete maintenance scheme to keep your boiler
operating at peak condition and efficiency.
2

TABLE OF CONTENTS

1 Key to symbols and safety instructions . . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 General safety instructions . . . . . . . . . . . . . . . . . . 3
2 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Operating the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Switching the boiler ON/OFF . . . . . . . . . . . . . . . . 6
3.3 Setting the central heating temperature . . . . . . . 7
3.3.1Controlling the central heating . . . . . . . . . . . . . . . 7
3.4 Setting the hot water temperature . . . . . . . . . . . . 8
3.5 Frost protection (for the boiler) . . . . . . . . . . . . . . 9
3.6 Frost protection (for the heating system) . . . . . . 9
3.7 Domestic hot water pre-heat . . . . . . . . . . . . . . . 10
3.8 Holiday setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.9 Fault condition . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Re-pressuring the heating system . . . . . . . . . . . 13
4.2 Fault finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4 Extreme cold weather . . . . . . . . . . . . . . . . . . . . . 17
5 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Fault or Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7 Tips on energy saving . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Your guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
GREENSTAR CDi CLASSIC COMBI - 6 720 812 179 (2014/07)