Bosch Appliances 24i junior Boiler User Manual
Contents
1. 600mm clearance required to a fixed surface for servicing The boiler must have more clearance in the unventilated compartment compared to the ventilated compartment Two examples are shown opposite refer to the Installation commissioning and servicing instruction manual for further information Do not add cupboards shelves etc to restrict the space around the boiler VENTILATION This is a room sealed boiler and does not require any air for combustion from inside the property If the boiler is fitted into a cupboard or a compartment is built around the boiler after installation then the compartment must be separated from the boiler space by a perforated non combustible partition as described in BS 6798 Notwithstanding the requirements of BS 6798 and BS 5440 there is no need for ventilation openings to be provided in the compartment because of the low heat loss from the boiler casing if the clearances shown are maintained Do not operate the boiler if the flue terminal fitted on the outside wall or roof is obstructed or damaged PUMP ANTI SEIZURE If there has been no heating demand for 24 hours the boiler will run the system pump for a few seconds to reduce the possibility of pump seizure during long periods of inactivity which is usually more frequent during the summer months NORCESTER WORCESTER BOSCH GREENSTAR 24i 28i Junior 8 716 115 661 05 2009 Bosch Group SAFETY PRECAUTIONS USI2. effective and efficient customer service by establishing a reference and permanent record for your boiler This does not affect your statutory rights For your own record Model Serial No See identity label inside boiler casing Type size Date of installation Name of Installer Telephone number of Installer Please ensure that the Benchmark Checklist has been completed by your installer or service engineer GUARANTEE REGISTRATION WORCESTER BOSCH GREENSTAR 24i 28i Junior NORCESTER 8 716 115 661 05 2009 Bosch Group NOTES AWIORCESTER WORCESTER BOSCH GREENSTAR 24i 28i Junior Bosch Group 8 716 115 661 05 2009 USER INSTRUCTIONS amp CUSTOMER CARE GUIDE Dedicated to heating comfort Worcester Bosch Group Cotswold Way Warndon Worcester WR4 9SW Tel 01905 754624 Fax 01905 754619 www worcester bosch co uk Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd 8 716 115 661 05 2009
3. operation The reset button will flash once per second and the mains indicator blue light will flash at different speeds dependent on fault a ul o 24 gt gt o o 2 gt To reset boiler press the reset button The reset button will no longer be illuminated and the mains indicator will stop flashing The boiler will function normally dependent on programmer and room thermostat settings If the electrical power to the boiler has been interrupted a reset fault condition will exist Reset the boiler as described above If the fault remains and cannot be cleared by pressing the reset button or if fault remains call Worcester Bosch Group for assistance giving a description of the fault and if possible the fault flashing sequence from the mains indicator Hr WORCESTER BOSCH GREENSTAR 24i 28i Junior ZZ WORCESTER 8 716 118 661 05 2009 OPERATING THE BOILER rou MAINTAINING YOUR BOILER Your new Greenstar gas fired boiler represents a long term investment in a reliable high quality product In order to realise its maximum working life and to ensure it continues to operate at peak efficiency and performance it is essential that your boiler receives regular servicing and maintenance checks from a competent person beyond the initial 2 year guarantee period If you would like to know more about a Worcester Bosch Group service contract please tick the appropriate
4. NG YOUR BOILER CONTROLS To gain access to the boiler controls push at the top of the flap and release 3 a 1 CENTRAL HEATING TEMPERATURE CONTROL 2 MAINS ON OFF INDICATOR FAULT DIAGNOSTIC LIGHT be a m 3 BURNER ON INDICATOR LIGHT GREEN 4 ECO BUTTON DOMESTIC HOT WATER PRE HEAT ON OFF 5 FAULT RESET BUTTON 6 SYSTEM PRESSURE GAUGE 7 POSITION FOR OPTIONAL PROGRAMMER a CONTROLS WORCESTER BOSCH GREENSTAR 24i 28i Junior 8 716 115 661 05 2009 AAWIORCESTER Bosch Group OPERATING THE BOILER SWITCHING THE BOILER ON OFF Switching on gt Switch on the boiler at the mains supply the indicator light shows blue There should be no need to switch the boiler off unless in the unlikely event a fault has occurred o x gt 5 o Switching off gt Should you need to switch off the boiler then do so at the mains supply The blue indicator light goes out NOTE When the boiler is switched off frost protection is disabled SETTING THE TEMPERATURE gt Turn the temperature control knob to the desired level approximate temperatures for each setting are shown in the table opposite When the burner is lit the green burner on indicator light is illuminated CONTROLLING CENTRAL HEATING gt Set the timer to the correct time gt Set room thermostat to the desired room temperature gt Se
5. THIS GUIDE THE INSTALLATION INSTRUCTIONS AND THE COMPLETED BENCHMARK CHECKLIST WITH THE USER NOTE THE BENCHMARK CHECKLIST AND SERVICE INTERVAL RECORD CAN BE FOUND AT THE REAR OF THE INSTALLATION COMMISSIONING AND SERVICE INSTRUCTIONS ABBREVIATIONS USED IN THIS BOOK NG Natural Gas LPG Liquid Petroleum Gas CH Central Heating SEDBUK Seasonal Efficiency of Domestic Boilers in the United Kingdom USER INSTRUCTIONS amp WORCESTER BOSCH GREENSTAR 241 281 Junior NORCESTER CUSTOMER CARE GUIDE Bosch Group CONTENTS INTRODUCTION DEDICATED TO HEATING COMFORT SAFETY PRECAUTIONS GENERAL NOTES USING YOUR BOILER CONTROLS OPERATING THE BOILER Switching the boiler on off Setting the central heating temperature Controlling central heating Frost protection Controlling domestic hot water Fault condition MAINTENANCE MAINTAINING YOUR BOILER FAULT FINDING FAULT OR BREAKDOWN ENERGY SAVING TIPS ON ENERGY SAVING GUARANTEE YOUR GUARANTEE GUARANTEE REGISTRATION Dedicated to heating comfort Thank you for purchasing a Greenstar gas fired condensing combination boiler 0 1 1 1 1 1 11 12 13 15 16 manufactured Worcester Bosch Group 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 Thi
6. USER INSTRUCTIONS amp CUSTOMER CARE GUIDE Greenstar 241 junior 281 junior WALL HUNG GAS FIRED CONDENSING COMBINATION BOILER FOR SEALED CENTRAL HEATING SYSTEMS amp DOMESTIC HOT WATER Ca THIS BOILER IS USED WITH NATURAL GAS OR LPG Cat Il 2H3P TYPE C13 C33 amp C53 NATURAL GAS 24i junior GC NUMBER 47 311 86 28i junior GC NUMBER 47 311 87 LIQUID PETROLEUM GAS 24i junior GC NUMBER 47 311 90 28i junior GC NUMBER 47 311 91 WORCESTER Bosch Group CONTACT INFORMATION WORCESTER BOSCH TECHNICAL 08705 266241 SERVICE 08457 256206 LITERATURE 01905 752556 SALES 01905 752640 WEBSITE www worcester bosch co uk USER INSTRUCTIONS amp CUSTOMER CARE GUIDE PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE OPERATING YOUR BOILER THESE INSTRUCTIONS ARE APPLICABLE TO THE WORCESTER BOSCH GROUP BOILER MODEL S STATED ON THE FRONT COVER OF THIS MANUAL ONLY AND MUST NOT BE USED WITH ANY OTHER MAKE OR MODEL OF BOILER THE INSTRUCTIONS APPLY IN THE UK ONLY AND SHOULD BE FOLLOWED EXCEPT FOR ANY STATUTORY OBLIGATION IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER BOSCH GROUP TECHNICAL SUPPORT DISTANCE LEARNING AND TRAINING COURSES ARE AVAILABLE FROM WORCESTER BOSCH GROUP THIS BOILER MUST BE INSTALLED BY A GAS SAFE REGISTERED COMPETENT PERSON FAILURE TO INSTALL CORRECTLY COULD LEAD TO PROSECUTION PLEASE LEAVE
7. act our Service Department Your service administrator will arrange for an engineer to call with the minimum of delay under normal circumstances this will be from 1 3 working days excluding weekends for priority breakdown situations no hot water and or heating Invoices for attendance and repair work carried out on this boiler by any third party will not be accepted FAULT OR BREAKDOWN WORCESTER BOSCH GREENSTAR 24i 28i Junior lt WORCESTER 8 716 115 661 05 2009 Bosch Group TIPS ON ENERGY SAVING HEATING ECONOMICALLY The boiler is designed to provide a high level of comfort while keeping gas consumption and the resulting environmental effect as low as possible The gas supply to the burner is controlled according to the level of demand for heat The boiler continues to operate with a low flame if the demand for heat reduces The technical term for this process is modulating control Modulating control reduces temperature fluctuations and provides even distribution of heat throughout the home This means that the boiler may stay on for relatively long periods but will use less gas than a boiler that continually switches on and off CENTRAL HEATING SYSTEMS WITH ROOM THERMOSTATS THERMOSTATIC RADIATOR VALVES The temperature control on the boiler should be set to the maximum rated temperature of the central heating system The temperature of each room can be set individually except primary room with the room thermostat using th
8. box on your warranty registration card If your Greenstar gas fired boiler should fail to operate correctly or requires servicing please contact the Worcester Bosch Group Service Department see inside front cover for details Details of the boiler including the Gas Council number can be found under the controls cover flap on the boiler MAINTAINING YOUR BOILER WORCESTER BOSCH GREENSTAR 24i 28i Junior NORCESTER 8 716 115 661 05 2009 Bosch Group FAULT FINDING This table gives information on basic operating system problems In the unlikely event of a boiler fault please read the following page thoroughly before contacting Worcester Bosch Group Cause Desired room Thermostatic radiator temperature is not valve s set too low reached Problem Increase thermostatic radiator valve setting s Temperature control for Increase CH flow CH flow on boiler set too temperature control low setting Air trapped in heating Bleed radiators and system recharge heating system Desired room Radiators are too hot Turn down thermostatic temperature exceeded by radiator valves room large amount thermostat Reduce central heating temperature on boiler Heating stays on for too Clock is incorrectly set Check setting long No on off indicator light Momentary power failure Switch off boiler at the mains supply wait a few seconds then switch on again Hot water temperat
9. d the boiler for safety and servicing access Do not restrict this space with the addition of cupboards shelves etc next to the boiler 30mm above elbow wee 5 4 D 5mm 1 25mm i on M Ree 200mm 600mm service clearance required to a fixed surface 25mm from removable door or panel ROOM THERMOSTAT A room temperature controller and programmer should be fitted to control the central heating Refer to the instructions supplied with the thermostat for information on siting and setting THERMOSTATIC RADIATOR VALVES It is recommended that this type of valve is fitted to all but one of the radiators or at least those in the sleeping accommodation The remaining radiator which must be where the room thermostat is located should be un controlled and must be left open The thermostatic radiator valves should conform to the requirements of BS2767 10 WORCESTER BOSCH GREENSTAR 24i 28i Junior NORCESTER 8 716 115 661 05 2009 Bosch Group b 200mm 4 250mm Sony 100mm 100mm 600mm 100mm 300mm GENERAL NOTES BOILER CLEARANCES UNVENTILATED COMPARTMENT The diagram opposite shows the minimum space required to install and service the boiler inside an unventilated compartment e gt e 54 2 Space required for unventilated areas with a removable door or panel
10. dow The performance of the radiator will be affected if the curtains are allowed to drape over the radiator or shelves are fitted above it The positioning of furniture and tables in front of the radiator should also be avoided It is advisable to manually adjust all radiator thermostatic valves every 2 3 months to prevent them sticking It is also important that the plastic tops of all valves are always in position and not cracked or damaged to prevent accidents Care should be taken when vacuum cleaning carpets to avoid damage to valves and pipework The heating system and the outputs of the radiators have been carefully selected by your installer The temperature obtainable in any given room is dependent on all radiators being operated at the same time If you decide to turn off radiators in unused rooms spare bedrooms etc you may experience slightly lower room temperatures in rooms adjacent to unheated rooms TIPS ON ENERGY SAVING WORCESTER BOSCH GREENSTAR 24i 28i Junior WORCESTER 8 716 115 661 05 2009 Bosch Group YOUR GUARANTEE This boiler is guaranteed against faulty material or workmanship for a period of 2 years from the date of installation subject to the following terms and conditions gt Your Guarantee Registration Card must be returned within 30 days for the second year of your guarantee to become valid gt During the period of this guarantee any components of the unit which are proven to be faulty or defective
11. e thermostatic radiator valves 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 Consideration should be given to replacement with PVCu or wooden framed double glazed units CURTAINS Lined curtains or heavier full length curtains can provide excellent insulation However always ensure that the curtains do not drape over radiators NORCESTER WORCESTER BOSCH GREENSTAR 24i 28i Junior TIPS ON ENERGY SAVING Bosch Group 8 716 115 661 05 2009 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 Do not block or seal any air vents that are installed to ensure the central heating boiler operates safely ROOM THERMOSTATS Reducing the setting of the room thermostat by 1 C can reduce fuel consumption by up to 10 NEW CONTROL SYSTEMS Upgrade your heating control system if necessary with the latest equipment available The minimum level of control is a programmer interlocking room thermostat and thermostatic radiator valves RADIATORS More often than not radiators will be sited underneath a window so the warm air from the radiator heats the colder incoming air from the win
12. 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 commissioned and where appropriate the first year s service inspection has been carried out to the satisfaction of Bosch Thermotechnology Ltd when requested These should be part of the Benchmark Checklist Any product or part returned for servicing under the guarantee must be accompanied by a claim stating the model serial number amp date of installation Bosch Thermotechnology Ltd will not accept responsibility for damage caused by faulty installation neglect misuse or accidental damage or the non observance of the instructions contained in the Installation Commissioning and Servicing Instructions and User Instructions and Customer Care Guide The boiler has been used only for the normal domestic purposes for which it was designed gt This guarantee applies only to equipment purchased and used in the United Kingdom and Eire This guarantee does not affect your statutory rights AA WORCESTER BOSCH GREENSTAR 24i 28i Junior YOUR GUARANTEE F WORCESTER 8 716 115 661 05 2009 OSC roup GUARANTEE REGISTRATION You should complete and return the postpaid Guarantee Registration Card within 30 days of purchase Returning the card will register you as the owner of your new Greenstar i junior boiler and will assist us in maintaining an
13. mark checklist and service interval record can be found at the rear of the Installation Commissioning and Servicing Instructions penchinan THE MARK OF QUALITY FOR THE INSTALLATION COMMISSIONING AND SERVICING OF DOMESTIC HEATING AND HOT WATER SYSTEMS BENCHMARK STANDARD Benchmark is a code of practice for correctly installing commissioning and servicing of domestic water heating boilers A Benchmark Checklist is provided by the manufacturer for the installer to complete ALL details together with their Gas Safe registration number and sign to confirm that the boiler has been installed and commissioned according to the manufacturer s instructions HEALTH amp SAFETY The boiler contains no asbestos and no substances used in the construction process that contravene the COSHH Regulations Control of Substances Hazardous to Health Regulations 1988 JA WORCESTER BOSCH GREENSTAR 24i 28i Junior F WORCESTER Tio nel 05 2008 Quo SAFETY PRECAUTIONS 9 2 4 To get the best from your boiler please read these instructions carefully 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 which should be indicated on the pressure gauge Check regularly that the pressure 15 maintained and contact your installer or maintenance engineer if a permanent significant drop in
14. pressure is indicated on the pressure gauge If the system loses pressure it should be re pressurised and the cause of the fall investigated CENTRAL HEATING SYSTEMS During the first few hours of operation of the central heating system check that all radiators are being heated evenly 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 This boiler is fitted to a sealed system repeated venting will reduce the quantity of water in the system and this must be replenished for safe and satisfactory operation of the boiler Should water leaks be found in the system or if excessive venting is required then a service engineer must be contacted to inspect the installation and rectify any fault Only additives that are compatible with aluminium may be used in the system Any incompatible additive used will invalidate the guarantee CONDENSATE DRAIN This is a condensing boiler and the terminal will at times give out a plume of water vapour This is quite normal The boiler also produces quantities of condensate which is discharged regularly by a syphon within the boiler via a pipe to drain This pipe must not be blocked or altered in any way GENERAL NOTES GENERAL NOTES CLEARANCES VENTILATED COMPARTMENT Your installer will have provided adequate space aroun
15. s 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 sits in SEDBUK Band 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 NORCESTER WORCESTER BOSCH GREENSTAR 241 281 Junior 8 716 115 661 05 2009 Bosch Group CONTENTS gt gt o o INTRODUCTION BOILER SAFETY PRECAUTIONS IF YOU SMELL GAS 2 2 e X DO NOT SMOKE OR STRIKE MATCHES X DO NOT TURN ELECTRICAL SWITCHES ON OR OFF V PUT OUT NAKED FLAMES OPEN DOORS AND WINDOWS V KEEP PEOPLE AWAY FROM THE AREA AFFECTED TURN OFF THE CONTROL VALVE AT THE METER V CALL YOUR GAS COMPANY BOILER OPERATION This boiler must only be operated by a responsible adult who has been instructed in understands and is aware of the boiler s operating conditions and effects COMBUSTIBLE AND CORROSIVE MATERIALS Do not store or use any combustible materials paper thinners paints etc inside or within the vicinity of the boiler Chemically aggre
16. ssive substances can corrode the boiler and invalidate any warranty FITTING amp MODIFICATIONS Fitting the boiler any controls to the boiler and removal of the outer casing may only be carried out by a competent engineer in accordance with the Gas Safety Installation and Use Regulations Flue systems must not be modified in any way other than as described in the Installation instructions and any misuse or unauthorised modifications to the boiler flue or associated components and systems could invalidate the warranty The manufacturer accepts no liability arising from any such actions This does not affect your statutory rights EXCELLENCE COMES AS STANDARD WORCESTER BOSCH GREENSTAR 24i 28i Junior 8 716 115 661 05 2009 AAWIORCESTER Bosch Group GENERAL NOTES SERVICING The boiler must be serviced regularly by a competent qualified person such as a Worcester service engineer or alternatively a British Gas or other Gas Safe registered person Z e 2 e 54 2 Always use original spares to help maintain the economy safety and reliability of the boiler and to have the Service Record completed in the Benchmark checklist IMPORTANT Ensure that the service engineer completes the Service Record in the Benchmark checklist after each service The completed Benchmark checklist will be required in the event of any warranty work and may be required by the local Building Control Inspector NOTE The Bench
17. t the thermostatic radiator valves to the desired settings FROST PROTECTION gt In the event where the boiler is not to be used for a period of time leave power on and turn the temperature control to If the temperature falls below 5 C within the boiler it will periodically fire to avoid the possibility of freezing gt If remote pipework is exposed to low temperatures ensure that the installer has added a frost thermostat AA WORCESTER BOSCH GREENSTAR 24i 28i Junior E BOILER F WORCESTER 8 716 115 661 05 2009 mn OPERATING TH o OPERATING THE BOILER HOT WATER TEMPERATURE The hot water temperature is fixed at 55 C and can not be adjusted 974 DOMESTIC HOT WATER Pre heat reduces the time taken to produce hot water at the tap and is controlled by the ECO button in gt Press and hold the ECO button to select either not illuminated or illuminated When the ECO button is not illuminated the boiler will be in pre heat mode which will reduce the time taken to produce hot water at the tap OR When the ECO button is illuminated the boiler will be in ECO mode with no pre heat available Zn mi gt AAWORCESTER Bosch Group OPERATING THE BOILER WORCESTER BOSCH GREENSTAR 24i 28i Junior 8 716 115 661 05 2009 OPERATING THE BOILER FAULT CONDITION In the unlikely event of a fault occurring while the boiler is in
18. ure Programmer setting Check setting too low Water flow at tap too high Reduce flow rate at tap JA WORCESTER BOSCH GREENSTAR 24i 28i Junior FAULT FINDING F WORCESTER 8 716 115 661 05 2009 osch Group FAULT OR BREAKDOWN This boiler is supported in the UK and Eire by Worcester Bosch Group Specially trained Worcester Bosch Group Service Engineers are available to attend a breakdown occurring on this boiler No charge will be made for parts and or labour providing An boiler fault is found and the boiler has been installed within the past 24 months Reasonable evidence of this must be supplied on request i e the Benchmark Checklist A call out charge will be made where The boiler has been installed for over 24 months OR Evidence cannot be provided that the first year service inspection has been carried out i e an entry in the Benchmark Checklist OR Our Field Service Engineer finds no fault with the boiler see Note OR The cause of breakdown is misuse or with other parts of your plumbing heating system or with equipment not supplied by Worcester Bosch Group NOTE NO BOILER FAULT IS FOUND ON OVER 30 OF SERVICE CALL OUTS Please read this guide carefully to gain a good understanding of the operation of your boiler In the case of a suspected fault refer to the fault finding section of this guide If in doubt contact our Technical Support In the event of an boiler fault or breakdown please cont
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