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CONTENTS
INTRODUCTION
DEDICATED TO HEATING COMFORT 1
SAFETY PRECAUTIONS 2
GENERAL NOTES 3
USING YOUR BOILER
CONTROLS 6
OPERATING THE BOILER 7
Switching the boiler on/off 7
Setting the temperature 7
Controlling central heating 7
Frost protection 7
Controlling the hot water temperature 8
Domestic hot water pre-heat 8
Fault condition 9
MAINTENANCE
MAINTAINING YOUR BOILER 10
FAULT FINDING 11
FAULT OR BREAKDOWN 12
ENERGY SAVING
TIPS ON ENERGY SAVING 13
GUARANTEE
YOUR GUARANTEE 15
GUARANTEE REGISTRATION 16
CONTENTS
WORCESTER BOSCH GREENSTAR 25Si/30Si
8 716 115 169b (09/2008)
1
INTRODUCTION
USING YOUR
BOILER
ENERGY
SAVING
GUARANTEE
Dedicated to heating comfort
Thank you for purchasing a Greenstar gas-fired condensing combination 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 40 years. This heritage means all 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.
To find out more about Worcester, Bosch Group log onto www.worcester-bosch.co.uk .
MAINTENANCE