- Worcester Bosch
Contents
1. 4 3 Errorcodes 4 4 Extreme cold weather 5 19 6 20 7 lt 21 8 Your guarantee 22 9 GLOSS ANY EE 23 2 6 720 803 600 2012 06 WORCESTER SYMBOLS AND SAFETY PRECAUTIONS 1 SYMBOLS AND SAFETY PRECAUTIONS 1 1 EXPLANATION OF SYMBOLS WARNING SYMBOLS Safety instructions in this document are framed and identified by a 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 NOTICE indicates possible damage to property or equipment but where there is no risk of personal injury CAUTION indicates possible personal injury WARNING indicates possible severe personal injury IMPORTANT INFORMATION personal injury or material losses and are identified by the symbol shown on the left They are bordered by i Notes contain important information in cases where there is no risk of horizontal lines above and below the text ADDITIONAL SYMBOLS Symbol Meaning a numbered step in an action sequence gt a step an action sequence 1 areference number to identify or refer to a part or item alist entry alist entry2. 6 720803 600 2012 06 11 MAINTENANCE WORCESTER Bosch Group 4 2 FAULTFINDING This table gives information on basic operating system problems Problem Cause Remedy EA fault code flashing on No gas supply low gas supply pressure Contact your gas supplier display Condensate outlet blocked Ifitis safe to do so check your condensate pipe outlet for blockages such as ice or foreign objects Flue blocked If itis safe to do so check your flue outlet for damage or blockages Desired room temperature is not reached Thermostatic radiator valve s set too low Increase thermostatic radiator valve setting s Temperature control for central heating flow on boiler set too low Increase central heating flow temperature control setting Air trapped in heating system Bleed radiators and recharge heating system Low system water pressure Low temperature setting on the boiler controls Re pressurise the system refer to pages 10 Increase settings on boiler controls Desired room temperature too high Radiators are too hot Turn down thermostatic radiator valves room thermostat Reduce central heating temperature by turning down the Central Heating control on boiler Heating stays on for too long Clock is incorrectly set Check setting and adjust ON OFF Indicator is not illuminated Momentary power failure Disconnect boiler supply wait a few s
3. mains supply has been interrupted Switching off Switch off the boiler by pressing the main power button The blue power button light goes out 3 3 SETTING THE CENTRAL HEATING TEMPERATURE Turn the central heating temperature control to the desired level between approx 35 C and 90 C When the burner is lit the green indicator light underneath the on off switch is illuminated Position Central heating temperature 1 approx 35 C _ a approx 43 C eco 3 approx 50 C 4 approx 60 C 4 5 approx 67 2 6 approx 75 C 16 approx 90 C 6 720 614 059 02 1Wo Table2 Settings for the central heating temperature 6 68720803 600 2012 06 WORCESTER OPERATING THE BOILER 3 3 1 CONTROLLING THE CENTRAL HEATING Central heating systems must be controlled effectively using a programmer or timer and a room thermostat For further information on how to control your central heating system please refer to the individual user guides for the programmer or timer installed in your home 3 4 SETTING THE DOMESTIC HOT WATER TEMPERATURE Turnthe domestic hot water temperature control to the desired level between approximately 40 Cand 60 C Position Domestic hot water s temperature A eo min approx 40 C reset 50 0 17 60 SI c 6 720 614 059 03 1Wo Table 3 Setti
4. The technical term for this 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 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 CENTRAL HEATING SYSTEMS WITH ROOM THERMOSTATS AND THERMOSTATIC RADIATOR VALVES The central heating control on the boiler should be set to maximum rated temperature of the central heating system The temperature of each room can be set individually except room with the room thermostat using the thermostatic radiator valves If damaged replace the plastic tops used to adjust the thermostatic radiator valve It is also advisable to manually adjust all thermostatic radiator valves every 2 3 weeks to prevent them sticking ROOM THERMOSTATS Reducing the setting of the room thermostat by 1 C can reduce fuel consumption by up to 10 96 ROOF INSULATION Around 30 96 of the heat loss from a property is through the roof Replace any old insulation with new insulation preferably of around 200 mm thickness or more WINDOW FRAMES Single glazed windows particularly those with steel frames can loose a great deal of heat Consideration should be g
5. may continue to run for a short while to dissipate the heat from within the boiler 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 SEDBUK Seasonal Efficiency of Domestic Boilers in the UK 6 720803 600 2012 06 19 WORCESTER BOSCH GROUP TECHNICAL SUPPORT 0844 892 3366 APPOINTMENTS 0844 892 3000 SPARES 01905 752571 LITERATURE 0844 892 9800 TRAINING 01905 752526 SALES 01905 752640 Worcester Bosch Group Cotswold Way Warndon Worcester WR4 9SW D WORCESTER Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd Bosch Group worcester bosch co uk 6 720 803 600 2012 06
6. period Reasonable evidence of this must be supplied on request i e the Benchmark Checklist Acall out charge will be made where The boiler is outside the guarantee period Evidence cannot be provided that the first year service inspection has been carried out i e an entry in the Benchmark Checklist Our Field Service Engineer finds no fault with the boiler The cause of breakdown is misuse or with other parts of your plumbing heating system or with equipment not supplied by Worcester Bosch Group TECHNICAL SUPPORT 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 Your advisor 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 and bank holidays for priority breakdown situations no hot water and or heating 16 6 720 803 600 2012 06 WORCESTER TIPS ON ENERGY SAVING 7 TIPSON ENERGY SAVING HEATING ECONOMICALLY The boiler is designed to provide a 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 alow flame if the demand of heat reduces
7. the bleed 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 Should water leaks be found or if excessive bleeding 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 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 This pipe must not be blocked or altered in any way 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 Thermostatic radiator valves Thermostatic radiator valves must be fitted in sleeping accommodation It is recommended that this type of valve is fitted to all but one of the radiators The remaining radiator where the room thermostat is located must be uncontrolled and left open Pump over run function After the boiler has finished a demand for central heating or hot water the pump
8. OLIDAY SETTING Activating the holiday setting will turn off the central heating system Frost protection and heating of domestic hot water will stay activated e A e L 6 720 614 059 05 1Wo To activate the holiday setting Press the holiday button until it is illuminated To deactivate the holiday setting Press the holiday button until it is no longer illuminated 8 6720803 600 2012 06 WORCESTER OPERATING THE BOILER 3 8 FAULT CONDITION In the unlikely event of a fault occuring while the boiler is in operation the reset button and the main power indicator will flash The display will show a fault code eC A o ap 0 6 720 614 059 07 1Wo Toreset the boiler Pressthe reset button for three seconds The reset button and the mains power indicator will stop flashing The boiler will function normally dependent on programmer and room thermostat settings If the fault cannot be cleared by pressing the reset button D Refer to the fault finding section page 12 of this user guide Call Worcester Bosch Group giving a description of the fault and if possible the fault code from the seven segment display Alternatively contact other Gas Safe registered personnel for assistance 6 720803 600 2012 06 9 A MAINTENANCE WORCESTER Bosch Group 4 MAINTENANCE 4 1 RE PRESSURING THE HEATING SYSTEM Itisimportantto regul
9. USER INSTRUCTIONS WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER GREENSTAR CDi CLASSIC MS AND MAINS FED DOMESTIC HOT WATER The appliances are for use with Natural Gas or L P G Catt II type C13 amp C33 Natural Gas 29CDi GC number 47 406 34 34CDi GC number 47 406 36 38CDi GC number 47 406 38 42CDi GC number 47 406 10 L P G 29CDi GC number 47 406 35 34CDi GC number 47 406 37 38CDi GC number 47 406 39 42CDi GC number 47 406 11 benchinan THE MARK OF QUALITY FOR THE INSTALLATION COMMISSIONING AND SERVICING OF DOMESTIC HEATING AND HOT WATER SYSTEMS WORCESTER Bosch Group 6720803 600 2012 06 WORCESTER 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 After installation please leave this User Instruction manual and the Installation Commissioning and Servicing Instructions with the user DEDICATED TO HEATING COMFORT Thank you for purchasing a Greenstar gas fired condensing combination boiler manufactured by Worcester Bosch Group 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 almost 50 y
10. arly check the pressure gauge on your combination boiler to keep it running efficiently The pressure should be at an optimum level of 1 5 bar If the pressure falls below 1 bar the boiler may stop working and require re pressurising amp resetting To re pressurise the heating system 1 Remove the bottom panel to gain access to the filling key and filling link The fillink link is situated as indicated below 6 720 614 059 25 1Wo 2 Insertthe filling key into the bottom of the charging link and push it upwards The arrow on the key shaft must be in line with the open padlock symbol on the charging link Is 6 720 614 059 21 1Wo 3 Turn the filling key clockwise to the closed padlock position 10 6720803 600 2012 06 WORCESTER Bosch Group MAINTENANCE 4 Test whether the filling key is locked properly in closed padlock position by pulling down on the key If the key is loose can be rotated or pulled out of the filling link please repeat steps 1 to 3 5 With filling key in locked position turn the water mains inlet knob white anticlockwise to open This fills the heating system with mains water 6 720 614 059 22 1Wo 6 When the pressure gauge reads 1 5 bar turn the white water mains inlet knob clockwise to close T Turn the filling key anticlockwise to the open padlock position and remove from the charging link 8 Stow the filling key back inside the bottom panel underneath the boiler
11. ears This heritage means all our 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 It sits in SEDBUK Band A 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 TABLE OF CONTENTS 1 Symbols and safety precautions 4 1 1 Explanation of symbols ix 1 2 Safety precautions 5 2 General Information 6 3 Operating the boiler 7 3 1 Controls ette be is 7 3 2 Switching the boiler on off 8 3 3 Settingthe central heating temperature 9 3 3 1Controlling the central heating 9 3 4 Setting the domestic hot water temperature 10 3 5 Frost protection for the boiler 11 11 12 12 13 3 5 1Frost protection for the heating system 3 6 Domestic hot water pre heat 3 7 Holiday Sa 3 8 4 Maintenance 14 4 1 Re Pressuringthe heating system 14 4 2
12. eceived regular professional maintenance and servicing during its lifetime The Benchmark initiative aims to Raise standards among professional installers Build and maintain high safety standards in the industry mprove customer satisfaction levels Makeacontribution to the nation s commitment to climate change 4 6720803 600 2012 06 WORCESTER Bosch Group OPERATING THE BOILER 3 OPERATING THE BOILER 3 1 CONTROLS M 6720647361 71 1Wo A MAIN POWER ON OFF BUTTON B COVER OR POSITION FOR OPTIONAL PLUG IN CONTROLLER C DISPLAY D SYSTEM PRESSURE GAUGE E RESET BUTTON F ECO BUTTON DOMESTIC HOT WATER PRE HEAT ON OFF G HOLIDAY BUTTON H DOMESTIC HOT WATER TEMPERATURE CONTROL I CENTRAL HEATING TEMPERATURE CONTROL SERVICE ENGINEER BUTTON ONLY K SERVICE ENGINEER BUTTON ONLY L BURNER INDICATOR LIGHT M POWER INDICATOR amp FAULT INDICATOR BLUE 6 720803 600 2012 06 OPERATING THE BOILER WORCESTER 3 2 SWITCHING THE BOILER ON OFF Switching on Switch on the boiler by pressing the main power button The power button light shows blue 6 A o C J 6 720 614 059 20 1Wo The boiler runs for 15 minutes at minimum heating output to fill the condensate trap The display alternates between 4 and the central heating flow temperature This occurs every time the
13. econds then reconnect Hot water temperature too low Temperature set too low on boiler controls Check setting and adjust Water flow at tap too high Reduce flow rate at tap Air trapped in heating system Bleed radiators and recharge heating system Low system water pressure Re pressurise the system refer to pages 10 Hot water temperature too high Temperature set too high on boiler Check setting and adjust controls Water flow at tap too low Increase flow rate at tap Table4 Fault finding 12 6720803 600 2012 06 WORCESTER Bosch Group MAINTENANCE 4 3 ERRORCODES the possible cause of the fault i When calling Worcester Bosch Group you may be asked for the error code This Table is for you to help identify Donottry to rectify any of the faults listed below by yourself Contact British Gas or a competent qualified engineer Gas Safe registered personnel Error code Description a AT 88 8 Hot water NTC sensor defective Break in communication to TD200 or and DT10 TET Code plug not detected C6 Fan speed too low e E2 CH flow NTC sensor defective CO E9 Safety temp limiter in CH flow has tripped EA FO Flame not detected Check if it safe to do so e is gasis inthe house for frozen condensate pipe for blocked flue outlet Internal error F7 Flame detected even thou
14. gh boiler switched off Ata Flame detected after gas shut off Fg Reset button pressed by mistake 6 720 803 600 2012 06 13 WORCESTER 4 4 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 A Failure to follow this guidance may result in personal injury Only attempt to thaw a condense pipe that is at ground level and that is easily accessible Neverattempt to thaw a condense pipe that is at height CAUTION Pipe damage N DO NOT use boiling water to thaw the condensate pipe If the condensate pipe has frozen Locate the blockage It is likely that the pipe is frozen at the most exposed point outside the building or where there is an obstruction to flow This could be the open end of the pipe at a bend or elbow or where there is a sag in the pipe in which condensate can collect The location of the blockage should be identified as closely as possible before taking further action Thaw the frozen pipe The pipe can be thawed by applying a hot water bottle a microwaveable heating pack the sort used for muscular aches and pains or a cloth soaked in hot water to the exterior of the pipe close to the po
15. int of blockage Hot water but not boiling can also be poured onto the pipe from a watering can or similar container Once the pipe has been thawed the boiler must be reset press the reset button for five seconds and wait two to three minutes for the boiler to restart Ifthe boiler does not restart contact Worcester Bosch Group Appointments Team on 0844 892 3000 Contact your installer in order to find a permanent solution to the problem 14 6 720 803 600 2012 06 A WORCESTER GENERAL NOTES 5 GENERAL NOTES SEALED HEATING SYSTEMS This boiler is fitted to a sealed heating system which is pre pressurised The optimum level for system pressure on a Greenstar CDi Combination boiler is 1 5 bar indicated on the pressure gauge Check regularly that the pressure is maintained Contact your installer or maintenace engineer if a permanent significant drop is indicated on the pressure gauge i For information on how to Re pressurise the heating system refer to page 10 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 also produces quantities of condensate which is discharged regularly via a pipe to drain This pipe must not be blocked or altered in any way 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 possibil
16. ity of pump seizure during long periods of inactivity This is usually more frequent during the summer months CLEARANCES Your installer will have provided adequate space around the boiler for ef a BEE e 30mm 7 7 safety and servicing access gt above elbow 600 mm service clearance required to a fixed surface 20 mm from removable door or panel gt Donotrestrictthis space with the addition of cubpoards shelves etc around or next to the boiler VENTILATION This is a room sealed boiler and does not require any air for combustion from inside the property If a compartment is built around the boiler after installation then this must be carried out as described in the Installation Manual CAUTION Risk of damage to the boiler N Donotoperate the boiler if the flue terminal is obstructed or damaged in any way Eo uomo um mom ue omes mS d x 600 mm 20 mm 200 mm gt 6720648547 39 1Wo ONES 6 720803 600 2012 06 15 A FAULT OR BREAKDOWN WORCESTER 6 FAULT OR BREAKDOWN This boiler is supported in the UK and Eire by Worcester Bosch Group Specialist Service Engineers are available to attend a breakdown occurring on this boiler D Invoices for attendance and repair work carried out on this boiler by any third party will not be accepted Nocharge will be made for parts and or labour providing Aboiler fault is found and the boiler is within the guarantee
17. iven to replacement with PVCu or wooden framed double glazing units CURTAINS Lined curtains or heavier full length curtains can provide excellent insulation However always ensure that the curtains do not drape over radiators DRAUGHTS To ensure that draughts around doors windows letterboxes and keyholes etc are reduced by using a suitable draught excluder RADIATORS Often radiators are sited underneath a window The performance of the radiator will be affected if curtains are allowed to drape over radiator or shelves are fitted above it 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 6 720803 600 2012 06 17 YOUR GUARANTEE WORCESTER 8 YOUR GUARANTEE This boiler has a guarantee against faulty materials or workmanship for a period of two years from the date of installation subject to the following terms and conditions 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 commissioned and where appropriate the first year s service has been carried out to the sa
18. mark Checklist and service interval record can be found at the rear of the Installation Commissioning and D Ensure that the service engineer completes the Service Record in the Benchmark Checklist after each service The Servicing Instructions Theboiler must be serviced regularly by a competent qualified person such as a Worcester service engineer or other Gas Safe registered engineer Always use original spares to help maintain the efficiency safety and reliability of the boiler and have the Service Record completed in the Benchmark Checklist The completed Benchmark Checklist will be required in the event of any guarantee work and may be required by the local Building Control Inspector BENCHMARK STANDARD The Benchmark initiative is a code of practice to encourage the correct installation commissioning and servicing of domestic central heating boilers and system equipment EE A checklist is dispatched with every boiler This is a vital document that needs to be completed HEATING AND HOT WATER SYSTEMS R M a by the installer at the time of installation It confirms that the boiler has been installed and commissioned according to the manufacturer s instructions 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 r
19. ngs for the domestic hot water temperature 3 5 FROST PROTECTION FOR THE BOILER Activating frost protection will turn off the central heating system Heating of domestic water will stay activated If the temperature within the boiler drops to 5 C the boiler will fire to avoid the possibility of freezing zu 0 C Cer 6 720 614 059 04 1Wo To activate frost protection Leave master switch on Turnthe central heating control temperature control to i 3 5 1 FROST PROTECTION FOR THE HEATING SYSTEM If remote pipework is likely to be subject to freezing conditions Ensure the installer has fitted a frost thermostat in the area to protect the pipework from freezing Ensure the installer has added a suitable anti freeze fluid to the water in the central heating system 6 720803 600 2012 06 7 WORCESTER Bosch Group OPERATING THE BOILER 3 6 DOMESTIC HOT WATER PRE HEAT You can choose to run your boiler in pre heat mode or in ECO mode Pre heat reduces the time taken to produce hot water at the tap and is controlled by the ECO button When the ECO button is illuminated the boiler runs in ECO mode and pre heat is not available eC o 6 720 614 059 06 1Wo To activate pre heat mode Press the ECO button until it is no longer illuminated To activate ECO mode Press the ECO button until it is illuminated 3 7 H
20. second level Table 1 Symbols 1 2 SAFETY PRECAUTIONS IF YOU SMELL GAS National Gas Emergency Service on 0800 111 999 Extinguish any naked flames Donotsmoke or strike matches Donotturn electrical switches on or off Open doors and windows Keep people away from the affected area Turn off the gas control valve at the meter 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 Chemically aggressive substances can corrode the boiler and invalidate any guarantee Donotstore or use any combustible materials paper thinners paints propellants cleaning agents etc inside or within the vicinity of the appliance 6 720803 600 2012 06 3 A GENERAL INFORMATION WORCESTER FITTINGS AND MODIFICATIONS Only a competent engineer can remove the boiler case and carry out any work in accordance with the Gas Safety Installation and Use Regulations Donotremove the boiler case Any misuse or unauthorised modifications to the boiler flue or associated accessories and heating system will invalidate the guarantee 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 2 GENERAL INFORMATION SERVICING Bench
21. tisfaction of Bosch Thermotechnology Ltd when requested These should be documented as a part of the Benchmark Checklist The boiler has been used only for the normal domestic purposes for which it was designed This guarantee does not affect your statutory rights GUARANTEE REGISTRATION Your Greenstar boiler carries a two year guarantee against faulty material or manufacture subject to Terms and Conditions To read the full Terms amp Conditions please visit us on line at www worcester bosch co uk guarantee The Guarantee Registration form is available on this same page and can be completed and submitted electronically Alternatively please telephone one of our Guarantee Registration advisors on 0844 892 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 Model Serial No Type size Date of installation Name of Installer Telephone number of Installer Table 5 1 See boiler identification label on boiler fascia or Benchmark Checklist in the back of the Installation Commissioning amp Servicing Instructions 18 6720803 600 2012 06 A WORCESTER GLOSSARY 9 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
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