Related Manuals for Bosch Worcester Greenstar 24
Summary of Contents for Bosch Worcester Greenstar 24
- Page 1 USER INSTRUCTIONS WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER GREENSTAR 24/28/30 FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER UK/IE...
- Page 2 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.
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Page 3: Table Of Contents
Contents CONTENTS Symbols and safety precautions ......5 Explanation of symbols ......5 Safety precautions . - Page 4 Contents System Pressure ........20 Sealed heating systems .
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Page 5: 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. Signal words indicate the seriousness of the hazard in terms of the consequences of not following the safety instructions. -
Page 6: Safety Precautions
• 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. 6 720 811 923 (2014/07) -
Page 7: 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. •... -
Page 8: Opening The Control Panel Cover
Opening the control panel cover OPENING THE CONTROL PANEL COVER Fig. 1 ▶ To unlatch the flap, push and release at the point indicated. ▶ To close and secure the flap, swing up and push in once to latch. 6 720 811 923 (2014/07) -
Page 9: Overview Of Controls
Overview of controls OVERVIEW OF CONTROLS 11 12 Fig. 2 Basic boiler controls [1] Service engineer symbol = boiler is set to maximum or minimum output for service [2] Service button for heating engineers [3] Indicator for burner operation [4] Boiler ON/OFF - does not electrically isolate the boiler [5] Button lock [6] Eco button [7] Reset button... -
Page 10: Operation
Operation OPERATION SWITCHING THE APPLIANCE ON/OFF SWITCHING ON FOR THE FIRST TIME ▶ Switch appliance on at the main switch. The display indicates the current heating water flow temperature. The indicator for burner operation/faults is permanently on, as long as the burner is operational. -
Page 11: Switching On The Central Heating
Operation SWITCHING ON THE CENTRAL HEATING The maximum flow temperature can be set to between 35°C and approx. 90°C. With underfloor heating systems, take care to observe the maximum permissible CH flow temperatures. ▶ Turn CH flow temperature control to adjust the max. CH flow temperature according to the central heating system: –... -
Page 12: System Controls
Operation SYSTEM CONTROLS These Operating Instructions apply only to the boiler. Depending on the room thermostat and optional programmer used, some functions may be controlled differently. Therefore, please read the operating instructions for the heating controller used. Follow the operating instructions for the heating controller used. Those instructions will tell you ▶... -
Page 13: Setting Hot Water Temperature
Operation SETTING HOT WATER TEMPERATURE ▶ Set the hot water temperature on the hot water temperature control The set hot water temperature is shown flashing on the display for 30 seconds. reset 6 720 614 156-10.1O Fig. 6 Hot water temp. control Hot water temperature min to 1 Approx. - Page 14 Operation ECO BUTTON Pressing and holding the Eco button until it lights up switches between Comfort mode and Economy mode. COMFORT MODE, ECO BUTTON IS NOT LIT (DEFAULT SETTING) The appliance is held constantly at the set temperature. This means that hot water is available almost instantaneously at the tap.
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Page 15: Frost Protection
Operation FROST PROTECTION Frost Protection is active as long as there is power to the boiler. If the temperature within the boiler falls below 8°C the pump will run to circulate water and prevent the system freezing.If the temperature within the boiler falls below 5°C the boiler will fire periodically, bringing the boiler temperature up to 12°C to avoid the possibility of the system freezing. -
Page 16: Button Lock
Operation BUTTON LOCK The button lock affects the CH flow temperature control, the hot water temperature control and all buttons except the main switch and the service engineer mode button. To switch on the button lock: ▶ Press and hold the button until the display shows reset Fig. -
Page 17: Boiler Reset
Info symbol: If the fault remains and cannot be cleared by pressed the reset button, or if the fault persists please contact Worcester, Bosch Group for assistance on 0330 123 3366. In the event of a fault, the reset button will flash once per second and the blue mains indicator light will flash. -
Page 18: Display Codes
Operation DISPLAY CODES Display code Description Inspection due Button lock active Trap filling function active Air purge function active Excessively rapid increase in CH flow temperature (temp. gradient monitoring). Heating mode is disabled for two minutes. Not applicable in the UK. Not applicable in the UK 6 720 811 923 (2014/07) -
Page 19: Extreme Cold Weather
Operation EXTREME COLD WEATHER In some instances where the condensate pipe work is run externally or in an unheated area, such as a garage, the condensate pipe work can be at risk of freezing, even if well insulated. A frozen/blocked condensate pipe will cause the boiler to shut down. WARNING: Falling hazard! Failure to follow this guidance may result in personal injury. -
Page 20: System Pressure
System Pressure ▶ If the boiler does not restart, contact Worcester, Bosch Group Appointments team on: 0330 123 3366. ▶ Contact your installer in order to find a permanent solution to the problem. SYSTEM PRESSURE SEALED HEATING SYSTEMS This boiler is fitted to a sealed heating system which is pre-pressurised. -
Page 21: External Filling Loop
System Pressure EXTERNAL FILLING LOOP Locate the external filling loop and follow the instructions for re-pressurising. NOTICE: If the filling loop does not look like the one shown in the figure below or you cannot find your filling loop, contact your installer. - Page 22 System Pressure Cold Central Cold Central Cold Central Mains in heating Mains in heating Mains in heating return return return 6720801019-03.1Wo Fig. 10 External filling loop If the pressure gauge reads more than 1.5 bar as a result of over filling, please bleed one radiator until the pressure gauge returns to between 1 and 1.5 bar.
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Page 23: Fault Or Breakdown
Fault or Breakdown FAULT OR BREAKDOWN This boiler is supported in the UK and Eire by Worcester, Bosch Group. Specialised Service Engineers are available to attend a boiler breakdown. Invoices for attendance and repair work carried out on this boiler by any third party will not be accepted. -
Page 24: Environment / Disposal
Environment / disposal 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 25 Tips on energy saving CENTRAL HEATING SYSTEMS WITH ROOM THERMOSTAT/THERMOSTATIC RADIATOR VALVES With modern heating systems set around a 20°C heat loss, the optimum setting for a condensing boiler will be approximately between one and two on the central heating temperature control.
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Page 26: Your Guarantee
The householder may be asked to prove the date of installation, that the boiler was correctly commissioned and, where appropriate, the first year's service has been carried out to the satisfaction of Bosch Thermotechnology Ltd., when requested. These should be documented as a part of the Benchmark Checklist. -
Page 27: Glossary
Glossary page and can be completed and submitted electronically. Alternatively please telephone one of our Guarantee Registration advisors on 0330 123 2552. Your statutory rights are not affected by the manufacturers guarantee. FOR YOUR OWN RECORD: Please ensure that the Benchmark Checklist has been completed by your installer or service engineer. - Page 28 Glossary Pluming and Condensate drain This is a condensing boiler and the flue terminal will, at times give out a plume of water vapour. This is quite normal. The boiler produces condensate which is discharged regularly by a syphon within the boiler via a plastic pipe to a drain.
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Page 29: General Information
General Information GENERAL INFORMATION CLEANING THE OUTER CASING Wipe down with a damp cloth. Do not use any abrasive or corrosive cleaning agents. KEEP THESE INSTRUCTIONS SAFE When you have finished reading these instructions, you can fold out the quick guide ( chapter 13) and place the booklet inside the control panel cover for safekeeping. -
Page 30: Quick Reference Guide
Quick reference guide QUICK REFERENCE GUIDE Switching on Switching on the Central heating Setting the Hot Water temperature reset reset 6 720 614 156-10.1O 6 720 615 065-12.1O Eco button not lit – Comfort mode Eco button lit – Economy mode Button lock Frost protection reset... - Page 31 NOTES 6 720 811 923 (2014/07)
- Page 32 0330 123 9119 TRAINING: 0330 123 0166 SALES: 0330 123 9669 Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW. Tel. 0330 123 9559 Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd. worcester-bosch.co.uk 6 720 811 923...