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 FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER UK/IE...
- Page 2 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 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 Explanation of symbols Safety precautions General information Opening the control panel cover Overview of controls Operation Switching the appliance on/off Switching on the central heating System controls Setting hot water temperature Frost protection Button lock Boiler reset Display codes Extreme cold weather... - Page 4 Contents System Pressure Sealed heating systems External filling loop Fault or Breakdown Environment / disposal Tips on energy saving Your guarantee Glossary General Information Quick reference guide 6 720 801 019 (2012/05)
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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
Symbols and safety precautions SAFETY PRECAUTIONS IF YOU SMELL GAS! A gas leak could potentially cause an explosion. If you smell gas, observe the following rules. B Prevent flames or sparks: – Do not smoke, use a lighter or strike matches. –... - Page 7 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. 6 720 801 019 (2012/05)
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Page 8: 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 9 General information The log book provides space for the recording of regular servicing of the boiler/heating system and this can become a valuable document when, for example, you wish to sell the property. The log book will show a potential purchaser that the heating system has received regular professional maintenance and servicing during its lifetime.
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Page 10: Opening The Control Panel Cover
Opening the control panel cover OPENING THE CONTROL PANEL COVER B To unlatch the flap, push and release at the point indicated. B To close and secure the flap, swing up and push in once to latch. 6 720 801 019 (2012/05) -
Page 11: Overview Of Controls
Overview of controls OVERVIEW OF CONTROLS 11 12 Fig. 1 Basic boiler controls Service engineer symbol = boiler is set to maximum or minimum output for service Service button for heating engineers Indicator for burner operation Boiler ON/OFF - does not electrically isolate the boiler Button lock Eco button Reset button... -
Page 12: Operation
Operation OPERATION SWITCHING THE APPLIANCE ON/OFF SWITCHING ON FOR THE FIRST TIME B 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. Please do not turn your boiler OFF. - Page 13 Operation When the flow temperature alternates with the symbol on the display, the trap filling function is active. The trap filling function ensures that the condensate trap is filled after the appliance is first installed or if it has not been used for a long period.
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Page 14: 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. B Turn CH flow temperature control to adjust the max. CH flow temperature according to the central heating system: –... -
Page 15: 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. -
Page 16: Setting Hot Water Temperature
Operation SETTING HOT WATER TEMPERATURE B 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 Hot water temp. control Hot water temperature min to 1 Approx. -
Page 17: Frost Protection
Operation ECONOMY MODE, ECO BUTTON LIT The water is not heated up until a hot water tap is turned on. • Signalling demand. • Briefly turning a hot water tap on and then off signals demand so that the water is then heated up to the set temperature. Signalling demand enables maximum gas and water economy. -
Page 18: 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: B Press and hold the button until the display shows reset To switch off the button lock: B Press and hold the button until the display shows only the CH... -
Page 19: 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 0844 892 3000. In the event of a fault, the reset button will flash once per second and the blue mains indicator light will flash. -
Page 20: 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 6 720 801 019 (2012/05) -
Page 21: 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. - Page 22 B If the boiler does not restart, contact Worcester, Bosch Group Appointments team on: 0844 892 3000. B Contact your installer in order to find a permanent solution to the problem.
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Page 23: 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 24: 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. B Ensure that the isolating valves are shut before removing the blanking caps. - Page 25 System Pressure Cold Central Cold Central Cold Central Mains in heating Mains in heating Mains in heating return return return 6720801019-03.1Wo Fig. 3 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 26: 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 27: 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 28: 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. - Page 29 Tips on energy saving ROOF INSULATION Around 30% of the heat loss from a property is through the roof. Replace any old insulation with new insulation, preferably of around 200mm thickness or more. WINDOW FRAMES Single glazed windows, particularly those with steel frames, can lose a great deal of heat.
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Page 30: 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 •... - Page 31 Your guarantee FOR YOUR OWN RECORD: Please ensure that the Benchmark Checklist has been completed by your installer or service engineer. Model Serial No. Type/size Date of installation Name of Installer Telephone number of Installer 1) See boiler identification label on boiler fascia or Benchmark Checklist in the back of the Installation, Commissioning &...
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Page 32: Glossary
Glossary 11 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 bled by releasing air through the bleed screw at the top of the radiator. You must re-pressure the system after venting the radiators. - Page 33 Glossary Room thermostat / programmer A room thermostat / programmer must be fitted to control the central heating. This controls the times and temperatures of the central heating, preventing the boiler from firing unnecessarily. Refer to the instructions supplied with the thermostat and programmer for further information.
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Page 34: General Information
General Information 12 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 35: Quick Reference Guide
Quick reference guide 13 QUICK REFERENCE GUIDE Switching on Switching on the Central Setting the Hot Water heating temperature reset reset 6 720 614 156-10.1O 6 720 615 065-12.1O Eco button not lit – Comfort Eco button lit – Economy mode mode Button lock... - Page 36 WORCESTER, BOSCH GROUP: TECHNICAL SUPPORT: 0844 892 3366 APPOINTMENTS: 0844 892 3000 Worcester, Bosch Group Cotswold Way, Warndon, Worcester WR4 9SW. Tel. 0844 892 9900 Worcester, Bosch Group is a brand name of Bosch Thermotechnology Ltd. worcester-bosch.co.uk 6 720 801 019 2012/05...