Bosch Worcester Greenstar 24 User Instructions Download Page 1

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UK/IE

USER INSTRUCTIONS

WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER

GREENSTAR 24/28

6720801019-00.1W

FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED
DOMESTIC HOT WATER

6 7

20 801

019 (2

012/

05)

Summary of Contents for Worcester Greenstar 24

Page 1: ...UK IE USER INSTRUCTIONS WALL HUNG RSF GAS FIRED CONDENSING COMBINATION BOILER GREENSTAR 24 28 6720801019 00 1Wo FOR SEALED CENTRAL HEATING SYSTEMS AND MAINS FED DOMESTIC HOT WATER 6 720 801 019 2012 05 ...

Page 2: ...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 50 years This heritage means all our products are of exceptional quality and proven reliability The Greenstar range in particular is extremely energy effici...

Page 3: ... information 8 3 Opening the control panel cover 10 4 Overview of controls 11 5 Operation 12 5 1 Switching the appliance on off 12 5 2 Switching on the central heating 14 5 3 System controls 15 5 4 Setting hot water temperature 16 5 5 Frost protection 17 5 6 Button lock 18 5 7 Boiler reset 19 5 8 Display codes 20 5 9 Extreme cold weather 21 ...

Page 4: ...em Pressure 23 6 1 Sealed heating systems 23 6 2 External filling loop 24 7 Fault or Breakdown 26 8 Environment disposal 27 9 Tips on energy saving 28 10 Your guarantee 30 11 Glossary 32 12 General Information 34 13 Quick reference guide 35 ...

Page 5: ...sible severe injury DANGER indicates possible risk to life IMPORTANT INFORMATION ADDITIONAL SYMBOLS Safety instructions in this document are framed and identified by a warning triangle which is printed on a grey background Notes contain important information in cases where there is no risk of personal injury or material losses and are identified by the symbol shown on the left They are bordered by...

Page 6: ...uilding B Well away from the building call the National Gas Emergency Service on 0800 111 999 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 Do not sto...

Page 7: ...use or unauthorised modifications to the boiler flue or associated accessories and heating system will invalidate the guarantee 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 ...

Page 8: ...ding 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 A checklist is dispatched with every boiler This is a vital document that needs to be completed by the installer at the time of installation It confirms that the boiler has been installed ...

Page 9: ...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 The Benchmark initiative aims to Raise standards among professional installers Build and maintain high safety standards in the industry Improve customer satisfaction levels Make a contribution to the nation s commitment to climate...

Page 10: ...trol panel cover 6 720 801 019 2012 05 3 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 6 720 612 660 01 2R ...

Page 11: ...r 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 8 Display 9 Hot Water temperature control 10 Pressure gauge 11 Position for optional programmer 12 Central Heating temperature control 13 Indicator for burner operation ON faults flashing 6 7 2 0 8 0 1 0 1 9 0 1 2 W o 1 2 4 5 6 7 8 10 3 11 12 13 9 ...

Page 12: ...burner is operational Please do not turn your boiler OFF If you switch your boiler off your frost protection mode will be deactivated Switching the boiler OFF does not electrically isolate the appliance Your installer must isolate the mains electricity before starting work and observe all relevant safety precautions In the event of an electrical power interruption when the boiler re starts it will...

Page 13: ...nsate trap is filled after the appliance is first installed or if it has not been used for a long period For that reason the appliance is held at minimum heat output for 15 minutes When the flow temperature alternates with the symbol on the display the trap filling function is active ...

Page 14: ...sition 3 approx 50 C Low temperature heating system position 6 approx 75 C Heating system for flow temperatures up to 88 C max position When the burner is alight the green indicator lights up With underfloor heating systems take care to observe the maximum permissible CH flow temperatures Position CH flow temperature 1 Approx 35 C 2 Approx 43 C 3 Approx 50 C 4 Approx 60 C 5 Approx 67 C 6 Approx 75...

Page 15: ... 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 B how to set the operating mode and the heating curve for weather dependent controllers B how to adjust the room temperature B how to heat economically and save energy 9 12h 15 18 21 24 h 3 6 6 720 612 660 0...

Page 16: ...p 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 Consequently the appliance will switch on at intervals even if no hot water is being drawn Hot water temp control Hot water temperature min to 1 Approx 40 C e Approx 50 C ...

Page 17: ...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 This process will be repeated until such time that the boiler temperatu...

Page 18: ...rature 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 To switch off the button lock B Press and hold the button until the display shows only the CH flow temperature max 1 2 3 4 5 6 max 1 2 3 4 e 6 eco reset min ...

Page 19: ...and the blue light will stop flashing If the reset was successful the boiler will return to normal operation depending on programmer and room thermostat settings If the reset was not successful then the blue light will continue to flash and a fault code will be displayed again Info symbol If the fault remains and cannot be cleared by pressed the reset button or if the fault persists please contact...

Page 20: ... 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 ...

Page 21: ... 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 WARNING Falling hazard Failure to follow this guidance may result in personal injury B Only att...

Page 22: ...o the point of blockage Hot water but not boiling can also be poured onto the pipe from a watering can or similar container B 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 B If the boiler does not restart contact Worcester Bosch Group Appointments team on 0844 892 3000 B Contact your installer ...

Page 23: ... pressure is maintained Fig 2 Optimum pressure when the boiler is cold area A B Contact your installer or maintenance engineer if a permanent significant decrease or increase in pressure is indicated on the pressure gauge The filling method will be an external filling loop fitted valves and flexible hose NOTICE To comply with the Water Authority regulations you must disconnect the external filling...

Page 24: ...4 The handle screwdriver slot will then be in line with the valve i e vertical FILLING PROCEDURE B Open one of the valves do not turn passed 90 i e turn B Monitor the water pressure gauge and slowly open the second valve until water can be heard flowing and the pressure gauge starts to rise B When the water pressure reaches 1 to 1 5 bar close the valve this will stop the system filling B Once the ...

Page 25: ...e 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 6720801019 03 1Wo Cold Mains in Central heating return Cold Mains in Central heating return Cold Mains in Central heating return 1 2 3 3 4 4 ...

Page 26: ...ry 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 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 engi...

Page 27: ...st possible technology and materials for protecting the environment taking account of economic considerations PACKAGING We participate in the recycling programmes of the countries in which our products are sold to ensure optimum recycling All of our packaging materials are environmentally compatible and can be recycled USED APPLIANCES B All Greenstar gas boilers are 100 recycleable The various ass...

Page 28: ...less gas than a boiler that continually switches on and off 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 The system must be balanced correctly and the radiators may need upgrading This a...

Page 29: ...rtains are allowed to drape over the radiator Shelves fitted above or in front of the radiator should also be avoided It is advisable to manually adjust all thermostatic radiator valves every 2 3 months to prevent them sticking Ensure radiator valves are correctly set and not damaged DRAUGHTS Try to ensure that draughts around doors windows letterboxes and keyholes etc are reduced by using a suita...

Page 30: ...ed out to the satisfaction 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 one year guarantee against faulty material or manufacture subject t...

Page 31: ...ist has been completed by your installer or service engineer Model Serial No 1 1 See boiler identification label on boiler fascia or Benchmark Checklist in the back of the Installation Commissioning Servicing Instructions Type size Date of installation Name of Installer Telephone number of Installer ...

Page 32: ... fault Only additives that are compatible with aluminium may be used in the system Any incompatible additive used will invalidate the guarantee Optional Integral Diverter Valve When the Integral Diverter Valve accessory is installed the demands for central heating and hot water can be controlled from the boiler The flow temperature for the domestic hot water cylinder can be set and adjusted using ...

Page 33: ...commodation 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 may continue to run for a short while to dissipate the heat from within the boiler Pump anti seizure If t...

Page 34: ...e 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 Æ chapter 13 and place the booklet inside the control panel cover for safekeeping 1019 02 1Wo max 1 2 3 4 5 6 ...

Page 35: ...button not lit Comfort mode Eco button lit Economy mode Button lock Frost protection max 1 2 3 4 5 6 6 720 613 896 05 1O eco reset 6 720 615 065 12 1O max 1 2 3 4 5 6 max 1 2 3 4 e 6 min 6 720 614 156 10 1O max 1 2 3 4 5 6 reset eco max 1 2 3 4 e 6 max 1 2 3 4 5 6 max 1 2 3 4 e 6 eco reset 6 720 615 065 17 1O min eco reset max 1 2 3 5 6 max 1 2 3 4 e 6 min ...

Page 36: ...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 WORCESTER BOSCH GROUP TECHNICAL SUPPORT 0844 892 3366 APPOINTMENTS 0844 892 3000 ...

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