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Greenstar 

24i 

junior

/ 28i 

junior

WALL HUNG GAS-FIRED CONDENSING COMBINATION BOILER

FOR SEALED CENTRAL HEATING SYSTEMS & DOMESTIC HOT WATER

USER INSTRUCTIONS &
CUSTOMER CARE GUIDE

THIS APPLIANCE IS FOR USE WITH
NATURAL GAS OR LPG (Cat II 2H3P TYPE C13 & C33)

24i junior NATURAL GAS:

47 311 86

24i junior LIQUID PETROLEUM GAS:

47 311 90

28i junior NATURAL GAS:

47 311 87

28i junior LIQUID PETROLEUM GAS:

47 311 91

Summary of Contents for 41-311-63

Page 1: ...AL HEATING SYSTEMS DOMESTIC HOT WATER USER INSTRUCTIONS CUSTOMER CARE GUIDE THIS APPLIANCE IS FOR USE WITH NATURAL GAS OR LPG Cat II 2H3P TYPE C13 C33 24i junior NATURAL GAS 47 311 86 24i junior LIQUID PETROLEUM GAS 47 311 90 28i junior NATURAL GAS 47 311 87 28i junior LIQUID PETROLEUM GAS 47 311 91 ...

Page 2: ...ost with low interest rates PRICE MATCH always get the best deals available Boilers Radiators Heating controls Pipes ittings Cylinders Fires Renewable energy Bathroom suites Kitchen sinks taps Showers Wet rooms Towel warmers Bathroom furniture much more H U G E R E D U C T I O N S we have ON THOUSANDS OF ITEMS 0 8 4 4 8 0 0 3 4 6 0 CALL US ON visit our website plumbnation co uk ...

Page 3: ...UST NOT BE USED WITH ANY OTHER MAKE OR MODEL OF APPLIANCE 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 TECHNICAL HELPLINE DISTANCE LEARNING AND TRAINING COURSES ARE AVAILABLE FROM WORCESTER BOSCH THIS APPLIANCE MUST BE INSTALLED BY A COMPETENT PERSON FAILURE TO INSTALL CORRECTLY COULD LEAD TO PR...

Page 4: ...7 Switching the appliance on off 7 Setting the central heating temperature 7 Controlling central heating 7 Frost protection 7 Controlling domestic hot water 8 Fault condition 9 ENERGY SAVING TIPS ON ENERGY SAVING 10 MAINTENANCE MAINTAINING YOUR APPLIANCE 13 FAULT FINDING 14 FAULT OR BREAKDOWN 15 GUARANTEE YOUR GUARANTEE 16 GUARANTEE REGISTRATION 17 INTRODUCTION USING YOUR APPLIANCE MAINTENANCE ENE...

Page 5: ...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 converting up to 97 of gas consumed into heat offering you economical running costs and value for money It sits in SEDBUK Band A and is therefore amongst the top energy rated appliances available There is also the reassurance of our n...

Page 6: ...tc inside or within the vicinity of the appliance Chemically aggressive substances such as halogenated hydrocarbons containing chlorine or fluorine compounds can corrode the appliance and invalidate any warranty FITTING MODIFICATIONS Fitting the appliance any controls to the appliance and removal of the outer casing may only be carried out by a competent engineer in accordance with the Gas Safety ...

Page 7: ...e 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 appliance and the terminal will at times give out a plume of water vapour This is quite normal The appliance also produces quantities of condensat...

Page 8: ...a compartment is built around the appliance 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 appliance casing if the clearances shown...

Page 9: ...H FOR ON OFF 2 CENTRAL HEATING TEMPERATURE CONTROL 3 MAINS ON OFF INDICATOR FAULT DIAGNOSTIC LIGHT 4 BURNER ON INDICATOR LIGHT GREEN 5 ECO BUTTON DOMESTIC HOT WATER PRE HEAT ON OFF 6 FAULT RESET BUTTON 7 SYSTEM PRESSURE GAUGE 8 POSITION FOR OPTIONAL PROGRAMMER USING YOUR APPLIANCE 1 2 4 6 8 7 5 3 ...

Page 10: ...derneath the on off switch is illuminated CONTROLLING CENTRAL HEATING Set the timer to the correct time Set room thermostat to the desired room temperature Set the thermostatic radiator valves to the desired settings FROST PROTECTION Leave master switch on Turn the central heating temperature control to If the temperature falls to 5 C within the boiler it will fire to avoid the possibility of free...

Page 11: ...tton Press the ECO button to select either 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 OPERATING THE APPLIANCE 4 OPERATING THE APPLIANCE WORCESTER BOSCH GREENSTAR 24i 28i Junior 8 716 107 338b 11 05 8 USING Y...

Page 12: ...nated and the mains indicator will stop flashing The boiler will function normally dependent on programmer and room thermostat settings If the fault remains and cannot be cleared by pressing the reset button or if fault persists contact Worcester Bosch for assistance giving a description of the fault and if possible the fault flashing sequence from the mains indicator OPERATING THE APPLIANCE 4 OPE...

Page 13: ...ovides 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 an appliance that continually switches on and off Central heating systems with room thermostats thermostatic radiator valves The central heating control on the boiler should be set to the maximum rated temperature of the central heating system The tempe...

Page 14: ... over radiators 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 Upgra...

Page 15: ...so 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...

Page 16: ...guarantee period If you would like to know more about a Worcester Bosch service contract please tick the appropriate box on your warranty registration card If your Greenstar 24i Junior 28i Junior should fail to operate correctly or requires servicing please contact the Worcester Bosch Service Department see inside front cover for details Details of the boiler including the Gas Council number can b...

Page 17: ...o low Radiators are too hot Clock is incorrectly set Momentary power failure Programmer setting Water flow at tap too high Increase thermostatic radiator valve setting s Increase CH flow temperature control setting Bleed radiators and recharge heating system Turn down thermostatic radiator valves room thermostat Reduce central heating temperature on boiler Check setting FAULT FINDING WORCESTER BOS...

Page 18: ...not supplied by Worcester Bosch Note NO APPLIANCE FAULT IS FOUND ON OVER 30 OF ALL SERVICE CALL OUTS Please read this guide carefully to gain a good understanding of the operation of your appliance In the case of a suspected fault refer to the fault finding section of this guide If in doubt contact our Technical Helpline In the event of an appliance fault or breakdown please contact our Service De...

Page 19: ...ried out to the satisfaction of BBT Thermotechnology UK 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 date of installation BBT Thermotechnology UK Ltd will not accept responsibility for damage caused by faulty installation neglect misuse or accidental d...

Page 20: ...ective 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 Check that the Benchmark Checklist has been completed by your installer or service engineer GUARANTEE REGISTRATION Model Serial No See guarantee card Type size Date of installation GUARANTEE REGISTRATION WORCESTER BOSCH GREENSTAR 24i ...

Page 21: ...ER CARE GUIDE 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 trading name of BBT Thermotechnology UK Ltd 8 716 107 338b 11 05 ...

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