Worcester Bosch Greenstar Heatslave II User
Contents
1. burner fires less frequently between demands meaning that the heat store temperature is maintained at a lower average level but the tank set point remains the same By selecting Eco mode you will be using less energy as the tank is allowed to cool a little more before reheating to the set point ER EE a 3 SELECTING ECO MODE 1 Press and hold eco for at least four seconds to enter the energy saving Eco mode when Eco mode is active Eco will be displayed EXIT ECO MODE To exit ECO mode press and hold eco for at least four seconds Eco will disappear FROST PROTECTION The boiler has built in frost protection to protect the boiler the boiler must have power for this to operate gt If you are leaving the property unoccupied during cold weather please leave your programmer on constant and your room thermostat set to 15 C gt If the temperature within the boiler falls below 8 C the pump will run to circulate water and prevent the system freezing gt If the temperature within the boiler falls below 4 5 C the boiler will fire immediately 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 temperature does not drop below 4 5 C If there is no hot water or heating check page 8 and 10 for fault condition guidance AWIORCES2. 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 Installer details This boiler is guaranteed against faulty materials or workmanship for a period of 24 calendar months 60 months for the primary heat exchanger from the date of installation subject to the following conditions That during the period of this guarantee any components of the unit which are proved to be faulty or defective in manufacture will be exchanged or repaired free of material charges and free of labour charges if repaired directly by Bosch Thermotechnology Ltd Please be aware that invoices for attendance and repair of this boiler by third parties will not be accepted for payment by Bosch Thermotechnology Ltd That the householder may be asked to prove when requested the date of installation that the boiler was correctly commissioned and where appropriate that the 12 month service inspection has been carried out to the satisfaction of Bosch Thermotechnology Ltd when requested The guarantee card must then be returned within 30 days of installation That any product or part thereof returned for servicing under the guarantee must be accompanied by a claim stating the Model Serial Number and Date of Installation That Bosch Thermotechnology Ltd wil
3. store or use any combustible materials paper thinners paints etc inside or within the vicinity of the boiler The combustion air must be kept clear of chemically aggressive substances which can corrode the boiler and invalidate any warranty FITTING amp MODIFICATIONS Fitting the boiler and any controls to the boiler may only be carried out by a competent engineer in accordance with the relevant Installation Regulations Flue systems must not be modified in any way other than as described in the fitting instructions 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 excluding statutory rights This boiler is suitable for use with kerosene only no other fuel may be used DO NOT OPERATE THE APPLIANCE WHEN The appliance flue or system is incorrectly fitted faulty or damaged The flue terminal outlet is obstructed or damaged There are fumes fuel leaks or fuel smells from the fuel supply appliance or internal flue system The system is empty frozen or unpressurised sealed systems The condensate pipe is blocked or restricted The appliance clearances are inadequate The air supply is restricted or vents damaged SAFETY PRECAUTIONS GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 AAWIORCESTER 6 720 805 211 07 2013 Bosch Group CONTROLS Spanner return button Reset butt
4. 0 to close the valve 6 The handle screwdriver slot will be at 90 to the valves 7 Remove the hose and replace the blanking caps INORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 OPERATING THE BOILER Group 6 720 805 211a 07 2013 FAULT FINDING Desired room temperature is not reached Thermostatic radiator valve s set too low Room thermostat set too low Temperature control for CH flow on boiler set too low Air trapped in heating system Increase thermostatic radiator valve setting s Increase room thermostat setting Increase CH flow temperature control setting Bleed radiators and recharge heating system if system pressure is low Desired room temperature exceeded by large amount Radiators are too hot Turn down thermostatic radiator valves room stat Temperature rises instead of falling Clock is incorrectly set Check setting No display or display unit does not respond Momentary power failure Switch off boiler at master switch wait a few seconds then switch on again Hot water temperature too low Hot water temperature set too low Hot water not in timed period on the programmer Check setting Check programmer settings GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 6 720 805 211a 07 2013 FAULT FINDING AWorcester Bosch Group MAINTAINING YOUR BOILER Your new boiler represents a long term inv
5. R HEATSLAVE II 12 18 18 25 amp 25 32 AANIORCESTER 6 720 805 211a 07 2013 Bosch Group FAULT OR BREAKDOWN This boiler is supported in mainland UK by Worcester Bosch Group part of Bosch Thermotechnology Ltd Specialist trained Worcester Bosch Group Service Engineers are available to attend in the unlikely event that a breakdown occurs on this boiler No charge will be made for parts and or labour providing Aboiler fault is found and the boiler has been installed within the guarantee period Reasonable evidence of this must be supplied on request A call out charge will be made where The boiler has been installed for longer than the guarantee period OR Our Field Service Engineer finds no fault with the boiler see Note OR Evidence cannot be provided that the first year service inspection has been carried out i e an entry in the service interval record found at the rear of the boiler installation and servicing manual OR The cause of breakdown is misuse or with other parts of your plumbing heating system or with equipment not supplied by Bosch Thermotechnology Ltd NOTE NO BOILER 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 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 b
6. TER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 OPERATING THE BOILER Bosch Group 6 720 805 211a 07 2013 x Se Za a 3 OPERATING THE BOILER BOILER ALERT STATE Should a fault develop with this boiler or the system the boiler will enter into a Locking or Blocking condition In the event of a Lockout condition the blue operation fault light and the alert triangle symbol will flash an alpha numeric fault code and a 3 digit cause code will be displayed BOILER RESET 1 Press the reset button on the fascia to clear the fault Reset and the spanner symbol are briefly displayed gt If the reset was successful the boiler will return to normal operation gt If the reset was not successful then the alert code will be displayed again and the blue operation fault light will continue to flash Should the boiler enter into a Blocking condition the boiler will stop operating and no fault code will be displayed In most cases the condition will clear automatically when the associated fault clears e g waiting for an area to cool In some cases a Blocking error has a defined time duration prior to changing to a Locking condition If the fault remains and cannot be cleared by pressing the reset button contact Worcester Bosch Group for assistance on 0844 892 3000 OPERATING THE BOILER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 AAWIORCESTER 6 720 805 211 07 2013 Bosch Grou
7. UCTIONS ABBREVIATIONS SEDBUK Seasonal Efficiency for Domestic Boilers in the United Kingdom OFTEC Oil Firing Technical Association for the Petroleum Industry USER INSTRUCTIONS amp CUSTOMER CARE GUIDE GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 AAWIORCESTER 6 720 805 211a 07 2013 Bosch Group CONTENTS INTRODUCTION SAFETY PRECAUTIONS 2 INTRODUCTION USING YOUR BOILER CONTROLS 3 OPERATING THE BOILER Switching the boiler on off Setting the heating temperature Controlling central heating Setting the hot water temperature Domestic hot water DHW Eco mode Frost protection Boiler Alert state System pressure amp filling loop Fault finding USING YOUR BOILER mo o o S MAINTENANCE MAINTAINING YOUR BOILER 11 SERVICING 12 GENERAL INFORMATION VENTILATION INFORMATION 13 14 GENERAL NOTES 15 GENERAL INFORMATION ENERGY SAVING TIPS ON ENERGY SAVING 16 GUARANTEE FAULT OR BREAKDOWN 17 YOUR GUARANTEE AND REGISTRATION 18 Dedicated to heating comfort Thank you for purchasing a Greenstar oil fired condensing boiler from 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 more than 50 years This heritage means all products are of exceptional quality and proven re
8. USER INSTRUCTIONS A CUSTOMER CARE GUIDE FLOOR STANDING OIL FIRED CONDENSING BOILER CONVENTIONAL FLUE amp ROOM SEALED FLUE GR AR HEATSLAVE II 25 32 THE BOILER IS FOR USE WITH KEROSENE 28 SECOND OIL ONLY Z WORCESTER Bosch Group CONTACT INFORMATION USER INSTRUCTIONS amp WORCESTER BOSCH TECHNICAL 0844 892 3366 SERVICE 0844 892 3000 SERVICE EIRE 01494 0099 LITERATURE 0844 892 9800 SALES 01905 752640 WEBSITE worcester bosch co uk NOTE NO BOILER FAULT IS FOUND ON OVER 30 OF ALL SERVICE CALL OUTS Please read the fault section of the manual before contacting our service team 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 MAINLAND UK ONLY AND SHOULD BE FOLLOWED EXCEPT FOR ANY STATUTORY OBLIGATION IF YOU ARE IN ANY DOUBT CONTACT THE WORCESTER BOSCH GROUP TECHNICAL SUPPORT THIS BOILER MUST BE INSTALLED BY A OFTEC REGISTERED COMPETENT PERSON FAILURE TO INSTALL CORRECTLY COULD LEAD TO PROSECUTION PLEASE LEAVE THIS GUIDE THE INSTALLATION INSTRUCTIONS AND THE COMPLETED CHECKLIST WITH THE USER NOTE A CHECKLIST AND SERVICE INTERVAL RECORD CAN BE FOUND AT THE REAR OF THE INSTALLATION COMMISSIONING AND SERVICE INSTR
9. boiler regularly serviced by a competent qualified OFTEC registered engineer using approved spares to help maintain the economy safety and reliability of the boiler The boiler should be serviced once each year after installation unless the installation conditions and usage demand more frequent services IMPORTANT Ensure that the service engineer completes the Service Record in the checklist after each service The completed checklist will be required in the event of any warranty work and may be required by the local Building Control Inspector NOTE The checklist and service interval record can be found at the rear of the Installation Commissioning and Servicing Instructions SERVICING GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 AAWIORCESTER 6 720 805 211 07 2013 Bosch Group VENTILATION INFORMATION BOILER LOCATION The boiler can be installed under a worktop as long as The worktop above the boiler is easily removable for maintenance There is at least 10mm clearance above the boiler The front of the boiler is not enclosed VENTILATION Air vents must be functional at all times and the air supply must not be restricted or contaminated The boiler clearances must meet the minimum shown below for servicing and venting purposes If this clearance is less than 75mm the flue knock out panel sections must be removed to improve air circulation and cooling Do not place clothes or objects to hind
10. cester Bosch Group Cotswold Way Warndon Worcester WR4 9SW Tel 01905 754624 Fax 01905 754619 worcester bosch co uk Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd 6 720 805 211a 07 2013
11. er the air circulation required by the boiler a lt a z SERVICE CLEARANCES T 7 300mm INFORMATION 895mm AWIORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 VENTILATION INFORMATION Bosch Group 6 720 805 211a 07 2013 VENTILATION INFORMATION Conventional flue boilers require an adequate supply of fresh air which must be delivered to the boiler for combustion purposes through a permanent inlet such as an air brick into the area where the boiler is situated If a cupboard or compartment which is to be used for storage or airing is built around the boiler after installation there must be a non combustible partition around the boiler Refer to the installation manual for minimum vent sizes GENERAL 2 gt x VENTILATION INFORMATION GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 NOoRCESTER 6 720 805 211a 07 2013 Bosch Group GENERAL NOTES To get the best from your boiler please read these instructions carefully CENTRAL HEATING SYSTEMS During the first few hours of operation of the central heating system check that all radiators are being heated at an even rate 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 Repeated venting will reduce the quantity of water in the system and this m
12. estment 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 servicing and maintenance checks are performed at least once a year by an OFTEC engineer or other suitably qualified person If you would like to know more about servicing options from Worcester Bosch Group please visit worcester bosch co uk Please tick the appropriate box on your warranty registration card for further details of the Worcester Bosch Group Service Contract When your boiler requires servicing please contact a Worcester Bosch Group contact centre see inside front cover for details In addition to the service contract we are pleased to offer a one off annual service or breakdown call out for your boiler Maintenance tips Regularly check the oil level in the tank Running the tank empty or low can lead to damage to the burner Do not obstruct the flue outlet or the air inlet USE IN HARD WATER AREAS In exceptionally hard water areas a device to prevent scale formation may be fitted Installation of a scale inhibitor assembly should be in accordance with the requirements of the local water company An isolating valve should be fitted to allow for servicing AWIORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 MAINTAINING YOUR BOILER Bosch Group 6 720 805 211a 07 2013 SERVICING SERVICING You must have the
13. l not accept responsibility for damage caused by faulty installation neglect misuse or accidental damage and non observance of the instructions contained in the Installation and Users Instructions leaflets That the boiler has been used only for normal domestic purposes for which it was designed This guarantee applies only to equipment purchased and installed in mainland UK This guarantee is given in addition to all your normal statutory rights Worcester Bosch Group is a brand name of Bosch Thermotechnology Ltd GUARANTEE REGISTRATION YOUR GUARANTEE GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 AWOorcester 6 720 805 211 07 2013 Bosch Group NOTES NORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 NOTES Bosch Group 6 720 805 211a 07 2013 NOTES NOTES GREENSTAR HEATSLAVE Il 12 18 18 25 amp 25 32 AAWIORCESTER 6 720 805 211 07 2013 Bosch Group NOTES NORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 NOTES Bosch Group 6 720 805 211a 07 2013 If the boiler fails to give complete satisfaction please check the following before calling for a service engineer General checks 1 Oil level in the tank 2 Power to the boiler 3 All control settings NOTE NO BOILER FAULT IS FOUND ON OVER 30 OF ALL SERVICE CALL OUTS Please read the fault section of the manual before con tacting our service team Dedicated to heating comfort Wor
14. l tank empty or low may result in damage to the burner AWIORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 GENERAL NOTES Bosch Group 6 720 805 211a 07 2013 TIPS ON ENERGY SAVING 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 with the latest equipment available The minimum level of control for a heating system 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 window 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 valves every 2 3 months to prevent them from sticking It is also important that the plastic tops of all valves are always in position and not cracked or damaged to help 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
15. liability The condensing range in particular is extremely energy efficient converting more of the fuel consumed into heat offering you economical running costs and value for money It sits in SEBUK band A at the top of the energy rated boilers available There is also the assurance of our no nonsense parts and labour guarantee backed up by an optional servicing and maintenance contract 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 AWORCESTER GREENSTAR HEATSLAVE 12 18 18 25 amp 25 32 CONTENTS Bosch Group 6 720 805 211a 07 2013 SAFETY PRECAUTIONS OIL FUMES OR LEAKS FROM THE BOILER v Extinguish any naked flames 2 2 D 2 v Open windows and doors V Switch off the boiler electricity supply V lsolate the fuel supply to the boiler V Contact installer service engineer IMPORTANT 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 HEALTH amp SAFETY The appliance contains no asbestos and no substances have been used in the construction process that contravene the COSHH Regulations Control of Substances Hazardous to Health Regulations 1988 Where applicable the CE mark indicates compliance with relative EU Directives COMBUSTIBLE AND CORROSIVE MATERIALS Do not
16. on ECO button Boiler LCD display Central heating temperature control Scroll up button OK Select confirmation button E Im m Dom gt a 9 gt 9 2 KA Scroll down button Demand fault indicator blue Position for optional programmer Hot water temperature control Diagnostic port service engineer System pressure guage Burner service mode button service engineer 2 we slk mm el mm mme T 44 4 eg IT Z J i 2 AWORCESTER GREENSTAR HEATSLAVE 12 18 18 25 amp 25 32 CONTROLS Bosch Group 6 720 805 211a 07 2013 x Se S Za a 3 CONTROLS DISPLAY SYMBOLS SCREEN DISPLAY DESCRIPTION EXPLANATION All possible screen symbols including greyed out symbols All possible screen symbols are displayed briefly during start up The greyed out symbols are not required for the operation of this appliance Numerical display Displays a temperature setting or boiler status code Text display Displays ECO or Alert code Hot water Displays during a hot water demand and when the heat store is reheating Central heating Displays during central heating demand Alert Displays during a fault condition with diagnostic and status code Service mode Displays when in the service menus Centigrade indication Displays next to temperature
17. p OPERATING THE BOILER SYSTEM PRESSURE 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 Check regularly that the pressure is maintained 1 5 bar Optimum system pressure when your boiler is cold S area A and the pump is off The indicated 1 ui pressure will change as the pump switches on for A g5 more accurate readings check pressure when the bar Le 2 pump is not running af Contact your installer or maintenance engineer if Min a permanent significant decrease or increase in pressure is indicated on the pressure gauge FILLING LOOP If the sealed system pressure within your system drops to below 0 5 bar shown on the pressure gauge you will need to increase the pressure to ensure your boiler continues to run without problems Your installer should have informed you where to find the filling system and instructed you in its use Once the external filling loop has been located follow the instructions for re pressurising the system 1 Unscrew blanking cap 2 Attach the hose to the valves screw on hand tight 3 Turn the handle screwdriver slot through 90 to open valves 4 The handle screwdriver slot will be in line with the valves 5 When the pressure reaches between the 1 and 1 5 bar marks zone A turn the handle screwdriver slot back through 9
18. reading Confirmation Confirms a manual change Weather Compensation Displays only if Weather Compensation sensor is fitted and is active OPERATING THE BOILER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 AAWIORCESTER 6 720 805 211 07 2013 Bosch Group OPERATING THE BOILER SWITCHING THE BOILER ON OFF To switch on the boiler turn on the water oil and electricity supply to the boiler Check the programmer timer is correct and is set to ON Set the room thermostat to the desired setting gt gt Open and set thermostatic radiator valves as required Turn the boiler water temperature control to the required setting gt E Im m To switch off the boiler turn the programmer timer to OFF for heating and hot water S gt 2 7 SETTING CENTRAL HEATING TEMPERATURE 1 Turn the central heating temperature control knob to the desired flow temperature between 50 and 82 C this will be indicated on the digital display This is not the room temperature but the flow temperature through the radiators 2 The radiator symbol will be displayed to confirm that the a central heating setting is being changed 3 The value is displayed during this process press the boiler display will return to the default screen to exit or after five seconds of inactivity CONTROLLING CENTRAL HEATING Set the programmer timer
19. reakdown please contact 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 to 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 BOILER DATA LABEL The data label can be found on the inside of the right hand side panel To access first remove the front panel Pull control panel drawer forwards Undo screws A securing the front panel to the boiler Lift panel off bottom ledge B and remove from appliance To replace front panel Rest panel on bottom ledge B Replace the screws A securing the front panel to the boiler Push control panel drawer back into place You can record this information on the inside back cover of this manual DATA LABEL AAWIORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 Bosch Group 6 720 805 211a 07 2013 FAULT OR BREAKDOWN GUARANTEE REGISTRATION YOUR GUARANTEE You should complete and return the postpaid Guarantee Registration Card within 30 days of installation Returning your card will register you as the owner of your new boiler and will assist us in maintaining an effective and efficient customer service by establishing a
20. to the correct time with the required ON OFF periods Turn the room thermostat to the temperature required Set thermostatic radiator valves to the required temperature for each room TURNING THE CENTRAL HEATING OFF DURING THE SUMMER Turn your programmer timer to the off position Please refer to the programmer timer manufacturer s instructions NORCESTER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 OPERATING THE BOILER Bosch Group 6 720 805 211a 07 2013 x Se Za a 3 OPERATING THE BOILER SETTING THE HOT WATER TEMPERATURE The hot water temperature control knob sets the temperature of the heat store A high setting will give a higher hot water temperature and greater quantities of hot water 1 Turn the hot water temperature control knob to the desired level between 1 and 8 this will be shown on the digital display 2 The tap symbol will be displayed to confirm that the hot water setting is being changed x 3 The value is displayed during this process press ok to exit or after five seconds of inactivity the boiler display will return to the default screen DOMESTIC HOT WATER DHW The GREENSTAR HEATSLAVE Il is microprocessor controlled and at low DHW flow rates washing hands etc the burner will not fire up when the tap is opened as the heat store will meet the demand but at high flow rates filling a bath for example the burner
21. ust be replenished for safe and satisfactory operation of the boiler When excessive venting or water leaks are found in the system you must contact a service engineer to inspect the installation and rectify any fault Only use additives compatible with the boiler and system Use of incompatible additives can cause damage and will invalidate the boiler 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 via a pipe to drain This pipe must not be blocked or altered in any way CLEARANCES SERVICE Your installer will have provided adequate space around the boiler for safety and servicing access Do not restrict this space with the addition of cupboards shelves etc next to the boiler a lt a z INFORMATION ROOM THERMOSTAT A room temperature controller must be fitted to control the central heating Refer to 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 OIL SUPPLY This appliance is for use with 28sec kerosene only Running the oi
22. will fire up to boost the heat store and meet the demand If DHW is OFF on the programmer the appliance will still supply DHW using heat stored in the tank but it will not reheat the tank therefore the amount of water available is limited but is adequate for washing up filling basins etc We recommend that DHW is timed off overnight and when the home is unoccupied to save energy The timer should be set for at least half an hour before normal hot water demands are expected to reheat the heat store When reheating the heat store the controls will scavenge heat from the boiler for the tank this means that the pump will run and the blue light will be on for some time after the burner has turned off whilst heat scavenging takes place WARNING care should be taken when washing your hands as in some circumstances the combination of low water flow rate and high setting of the hot water control thermostat can result in very hot water at the tap at the start of the demand OPERATING THE BOILER GREENSTAR HEATSLAVE II 12 18 18 25 amp 25 32 IWNORCESTER 6 720 805 211 07 2013 Bosch Group OPERATING THE BOILER DOMESTIC HOT WATER ECO MODE Eco mode is an energy saving feature which alters the cycling function of the burner for heating the heat store tank In normal operation the burner will fire more frequently between demands in order to maintain a stored temperature close to the hot water set point you have entered In Eco mode the
23. 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 Heating economically The boiler is designed to provide a high level of comfort while keeping oil consumption and the resulting environmental effect as low as possible The central heating control on the boiler should be set as low as possible while still maintaining a comfortable room temperature The temperature of each room can be set individually using the thermostatic radiator valves except the primary room with the room thermostat Roof insulation Around 30 of the heat loss from a property is through the roof Replace any old insulation with new insulation preferably to a minimum thickness of 200mm 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 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 or other appliance operate safely TIPS ON ENERGY SAVING GREENSTA
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