Bosch Worcester Greenstar Si Series User Instructions

Bosch Worcester Greenstar Si Series User Instructions

Wall hung rsf gas fired condensing combination boiler

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USER INSTRUCTIONS
WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER
GREENSTAR Si
FOR CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER
UK/IE

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Summary of Contents for Bosch Worcester Greenstar Si Series

  • Page 1 USER INSTRUCTIONS WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER GREENSTAR Si FOR CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER UK/IE...
  • Page 2 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.
  • Page 3: Table Of Contents

    CONTENTS CONTENTS Symbols and safety precautions ....4 Explanation of symbols ......4 safety precautions .
  • Page 4: Symbols And Safety Precautions

    SYMBOLS AND SAFETY PRECAUTIONS SYMBOLS AND SAFETY PRECAUTIONS EXPLANATION OF SYMBOLS WARNING SYMBOLS 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. Signal words indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions.
  • Page 5: Safety Precautions

    Any misuse or unauthorised modifications to the boiler, flue or associated components and system will invalidate the warranty. B Do not modify the boiler or flue system in any way. Worcester, Bosch Group accepts no liability arising from any such actions. This does not affect your statutory rights. 6 720 643 356a (2010/10)
  • Page 6: General Information

    GENERAL INFORMATION GENERAL INFORMATION SERVICING Ensure that the service engineer completes the Service Record in the Benchmark Checklist after each service. The Benchmark Checklist and service interval record can be found at the rear of the Installation, Commissioning and Servicing Instructions. B The boiler must be serviced regularly by a competent, qualified person, such as a Worcester service engineer or other Gas Safe registered engineer.
  • Page 7: Controls

    CONTROLS CONTROLS B To gain access to the boiler controls push the top centre of the flap and release. Fig. 1 Control panel fascia Central heating temperature control ECO button Burner indicator (Green) Reset button Boiler Controls Service button Hot water temperature control Cover or optional Programmer System pressure gauge Power ON and fault indicator (Blue)
  • Page 8: Operating The Boiler

    CONTROLS OPERATING THE BOILER 3.1.1 SETTING THE CENTRAL HEATING TEMPERATURE 1. Turn the central heating temperature control knob to the desired level. Temperatures given in the figure below are approximate. 2. The Burner indicator (green) will illuminate to show that the boiler is running. 40 °C 47 °C 53 °C...
  • Page 9: Setting The Hot Water Temperature

    CONTROLS 3.1.4 SETTING THE HOT WATER TEMPERATURE 1. Turn the hot water temperature control knob to the desired level. reset Fig. 4 Hot water temperature 3.1.5 DOMESTIC HOT WATER PRE-HEAT The hot water heat exchanger is kept “pre-heated” to reduce the time taken to deliver hot water at the tap.
  • Page 10: Boiler Reset

    2. The mains indicator will no longer be flashing. reset Fig. 6 Reset button and mains light If the fault remains and cannot be cleared by pressing the reset button, contact Worcester, Bosch Group for assistance. 6 720 643 356a (2010/10)
  • Page 11: System Pressure

    SYSTEM PRESSURE SYSTEM PRESSURE SEALED HEATING SYSTEMS This boiler is fitted to a sealed heating system which is pre-pressurised. Your installer will advise you of the minimum and maximum pressure indicated on the pressure gauge. B Check regularly that the pressure is maintained. 1.5 bar 1 bar Fig.
  • Page 12: Using The Optional Integral Filling Kit

    SYSTEM PRESSURE USING THE OPTIONAL INTEGRAL FILLING KIT Locate filling key and follow instructions for re-pressurising. 1. Push the filling key firmly into the body of the filling link, ensuring the arrow on the key shaft lines up with the open padlock symbol. 2.
  • Page 13: External Filling Loop

    SYSTEM PRESSURE EXTERNAL FILLING LOOP Once the external filling loop has been located, follow the instructions for re-pressurising. 1. Unscrew blanking cap. 2. Attach hose and screw on hand-tight to valve. 3. Turn the handle/screwdriver slot point 90° to open the valves. 4.
  • Page 14: Service Clearances

    SERVICE CLEARANCES SERVICE CLEARANCES Your installer will have provided adequate space around the boiler for safety and servicing access. CAUTION: Restricted space. The boiler may overheat. B Do not restrict this space with the addition of cupboards, shelves etc. next to the boiler.
  • Page 15: Maintaining Your Boiler

    2 year guarantee period. If you would like to know more about a Worcester, Bosch Group service contract, please tick the appropriate box on your warranty registration card.
  • Page 16: Fault Finding

    FAULT FINDING FAULT FINDING If a boiler fault occurs, please read the following page thoroughly before contacting Worcester, Bosch Group. Problem Cause Remedy Desired room temperature is Thermostatic radiator valve(s) B Increase thermostatic not reached set too low radiator valve setting(s)
  • Page 17 FAULT FINDING EXTREME COLD WEATHER In instances where the condensate pipe work is run external or in an unheated area, such as a garage, it can be at risk of freezing, even if insulated. A frozen condensate pipe will cause the boiler to shut down. WARNING: Falling hazard! Failure to follow this guidance can result in personal injury.
  • Page 18: Fault Or Breakdown

    No boiler fault is found on over 30% of all service calls. In the case of a suspected fault, refer to the fault finding section of this guide. In the event of a boiler fault or breakdown please contact Worcester, Bosch Group appointments team on 0844 892 3000.
  • Page 19: Tips On Energy Saving

    TIPS ON ENERGY SAVING TIPS ON ENERGY SAVING HEATING ECONOMICALLY The boiler provides a high level of comfort whilst keeping gas consumption and the environment effects as low as possible. The gas supply to the burner is controlled according to the level of demand for heat. The boiler operates with a low flame if the demand for heat reduces.
  • Page 20 TIPS ON ENERGY SAVING DRAUGHTS Try to ensure that draughts around doors, windows, letterboxes and keyholes etc. are reduced by using a suitable draught excluder. WARNING: AIR VENTS B Do not block or seal any air vents that are installed to ensure that the central heating boiler operates safely.
  • Page 21: Environment / Disposal

    ENVIRONMENT / DISPOSAL 10 ENVIRONMENT / DISPOSAL Environmental protection is a fundamental corporate strategy of the Bosch Group. The quality of our products, their economy and environmental safety are all of equal importance to us and all environmental protection legislation and regulations are strictly observed.
  • Page 22: Your Guarantee

    During the period of this guarantee any components of the boiler which are proven to be faulty or • defective in manufacture will be exchanged or repaired free of charge by Bosch Thermotechnology Ltd. The householder may be asked to prove the date of installation, that the boiler was correctly •...
  • Page 23: Glossary

    GLOSSARY 12 GLOSSARY Central heating systems All radiators must be heated at an even rate. If the top of a radiator is at a lower temperature than the bottom then it should be vented by releasing air through the venting screw at the top of the radiator. Ask your installer to show you how this is done.
  • Page 24 TECHNICAL SUPPORT: 0844 892 3366 APPOINTMENTS: 0844 892 3000 WEBSITE: worcester-bosch.co.uk Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW. Tel. 0844 892 9900 Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd. 6 720 643 356a (2010/10)

This manual is also suitable for:

Worcester greenstar 25siWorcester greenstar 30si

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