Ultrapower sxi User Manual Boilers - Glow-worm
Contents
1. 9 7 Gris 10 HOW TO USE YOUR APPLIANCE 8 OVES Wisi een ie eee t rii ba Rei ek Ond eiu he e ha be rds 11 8 1 Display Description uerunt trae aeaa 11 8 2 Switching Omand Off 2 crece tee eee eerie ek tiun 12 3 Switching On and Off nes eie eco etian eto Eco fece 13 ANY ASSISTANCE 9 a ltFindipng oie repart etd eret Ea Un aaea exiget estare eese abe aget o En 18 9 1 Electrical circuit interruption ccccecccceeeeeeeeeeceeeeeeeeaeeeeeeeenaees 18 9 2 Appliance fails to light 1 rer tne 18 9 3 Appliance safety devices seeeeee eene nein 19 9 4 Boller Sh tdOWD idee eee ie eee ee 19 9 5 Protecting against frost x20 9 6 Condensate Drain Blockage wi 20 9 7 Safety Discharge Valve trente eren nnn hede 20 9 8 Appliance maintenance and servicing 21 E EBCCCHDDE A NES 21 9 10 Regular servicing ree 21 9 11 Sealed Water Systems seisena o eiee neincetat ie iaire 21 9 12 Spare Parts ud er ean aE Ea aaa 21 10 TipS for Saving ENERGY eaa teer ei Dried n ipee t RAR est 22 11 Contact your after sales organisation eese 23 2 READ CAREFULLY BEFORE USING 1 Read me 1 1 Welcome These instructions are an integral part of the boiler and must to comply with the current issue of the Gas Safety Installation and Use Regulations be left with the user Please ensu2. Turn ON your external controls and select the room temperature required The boiler will operate automatically NOTE The display will indicate the Heating system pressure in bar or Water temperature when heating is on Domestic Hot Water temperature setpoint when there is a demand Fault Code see section Fault Finding The control panel will flash and display all its digits It will then return to the default display and depending on the selected operation and controls display the temperature settings 0020054593 03 11 Glow worm 13 Adjusting temperature Domestic hot water has priority over central heating The temperature is factory preset to the minimum 40 C but can be adjusted to a maximum of 62 C as required The ECO setting of 50 C is recommended and ideally suited to normal family use The Central Heating temperature is factory preset to the minimum 38 C but can be adjusted to a maximum of 82 C as required STEP 1 i Ly t Bun Press the or once the current temperature will be displayed flashing SS e LX gt 4 2a Bf Press or to increase or decrease the temperature The temperature setting will automatically save after 5 seconds 14 ADVANCE Y STEP1 9 j i d c mc Press the or once the current temperature will be displayed flashing CONE GN W ggap
3. MTWT Eee SoS a ADVANCE STEP2 O Press or to increase or decrease the temperature The temperature setting will automatically save after 5 seconds 0020054593 03 11 Glow worm HOW TO USE YOUR APPLIANCE Setting the 24 hour Clock To set the clock refer to diagram below STEP 1 2 PROG Press and hold PROG 5 secs the hours symbol will flash STEP 2 Press the or the to set the hour STEP 3 Press PROG to confirm The process will automatically scroll to minutes then days set as previously described 0020054593 03 11 Glow worm 15 Setting the Programmer To set the clock refer to diagram below STEP 2 il 4 Press or to move the flashing cursor to the desired time STEP1 ii 4 Press the PROG button once to view Mondays factory default central heating running times STEP3 ti 4 Press to add a time segment or to remove a time segment ADVANCE ey e rv B mmm h SD D ULUL Pros co ittie MTWTFSS L Running Time Indicated by solid squares Square represents 30 minutes Flashing cursor STEP 4 Wi Press PROG to validate the time intervals The days will automatically change repeat the process or refer to the Copy Function After the 7th day the Domestic Hot Water time intervals will be displayed follow the same process steps 1 to 4 STEP4 amp Press PROG t
4. Temperature A Max burner display 6 0020054593 03 11 Glow worm 11 8 2 Switching On and Off Switching on Check that all isolating valves including the gas service isolating valve on the appliance are open and that water flows from the hot water taps then close taps refer to diagram GAS SERVICE ISOLATION VALVE FIXING JIG CENTRAL GAS INLET HEATING OUTLET PRESSURE FLOW TEST POINT CENTRAL INLET HEATING RETURN VALVES SHOWN CLOSED The appliance has electrical power and there is no demand from any external controls Switching off Do not operate the boiler without water Switch off the electrical supply The appliance and the display will shut down 2 12 If you intend to leave your property empty for a prolonged period please refer to the Appliance Safety Devices section 0020054593 03 11 Glow worm 8 3 User Controls If you are in any doubt about the boiler being filled with water contact your installer or Glow worm s own service organisation using the telephone number shown in the chapter Contact your after sales organisation Press MODE button and scroll through your options to select one of the following Timed central heating and domestic hot water a nm Constant central heating with timed domestic hot water 4 Il Timed domestic hot water only Boiler functions ALL switched off OFF
5. boiler having been serviced by a competent person approved at the time by the Health and Safety Executive in accordance with the manufacturer s recommendations We strongly recommend regular servicing of your gas appliance but where the condition is not met any chargeable spare parts or components issued within the applicable guarantee period still benefit from a 12 month warranty from the date of issue by the manufacturer 5 2 Appliance use manufacturer responsibility Servicing maintenance should be carried out by a competent person approved at the time by the Health and Safety Executive in accordance with the rules in force in the countries of destination The guarantee is applicable on the condition that The appliance is installed by a competent person in accordance with installation instructions The appliance is used for normal domestic purposes and in accordance with the manufacturer s operating and maintenance instructions The appliance is serviced maintained by a competent person The repair or replacement of parts during the guarantee period does not have the effect of extending the period The manufacturer has no responsibility whatsoever for any damage resulting from Any defects or damage resulting from incorrect or poor installation inadequate servicing or maladjustment of the gas or water used Any defects in the system to which the appliance is connected Any defects c
6. co uk penchmar THE MARK OF QUALITY FOR THE INSTALLATION COMMISSIONING AND SERVICING OF DOMESTIC HEATING AND HOT WATER SYSTEMS This Quick reference guide assumes that the appliance has been installed and commissioned by a competent person DEDE All functions selected ung ie buttons will shown in the display RESET If fault indicated F followed by a number reset the boiler by pressing the reset button If fault persists contact your installer service provider 4 0020054593 03 11 Glow worm 2 Introducing your appliance 2 4 Appliance description The Ultrapower sxi is a high efficiency cen tral heating appliance close coupled to an un vented cylinder The pump expansion vessels and associated safety devices are all fitted within the appliance providing a one box solution for properties requiring a high domestic hot water demand The intelligent control system is designed for both simple operation and maximum control Once the controls are set the boiler operates automatically Additionally an immersion heater is supplied fitted to the cylinder It is intended for use as a back up should the boiler fail it will not give optimum DHW performance Intelligent controls are available as accessories from Glow worm Contact your Installer or Glow worm sales for further information The Ultrapower sx boiler is an appliance that uses condensing technology which recovers hea
7. inadequate servicing can severely affect the safety of the appliance and can lead to injury We recommend that your appliance is serviced every year Only use a competent person The service engineer should complete the relevant Service Record on the Benchmark Checklist after each service The Benchmark Checklist may be required in the event of any warranty work and as supporting documentation relating to home improvements in the optional documents section of the Home Information Pack To obtain service please call your installer or Glow worm s own service organisation using the telephone number on the inside front cover of this booklet 0020054593 03 11 Glow worm 10 3 Sealed Water Systems The draining refilling and pressurising MUST be carried out by a competent person approved at the time by the Health and Safety Executive Contact Glow worm s own service organisation using the telephone number below Tel 01773 828100 10 4 Spare Parts In order to guarantee the safe and prolonged life of the product insist that only the manufacturer s genuine spare parts are used Do not use reconditioned or copy parts that have not been clearly authorised by Glow worm f replacement parts are required contact Glow worm s own service organisation for advice using the telephone number below Tel 01773 828100 or for approved stockist visit www glow worm co uk Please quote the name and model of
8. of safety it is the Law that ALL gas appliances have been installed by a competent person approved at the time by the Health and Safety Executive in accordance with the current issue of these regulations Gas Category This boiler is for use only on G20 natural gas but can be converted for use on G31 Propane Electrical Connection The boiler MUST be earthed The boiler MUST be connected to a permanent 230V ac 50Hz supply fused at 3A Connection of the whole electrical system of the boiler including any heating controls to the electrical supply must be through one common isolator The colours of three core flexible cable are blue neutral brown live green and yellow earth Immersion Heater The immersion MUST be earthed Theimmersion MUST be connected to a per manent 230V ac 50Hz supply fused at 13A Testing and Certification This boiler is certificated to the current issue of EN 483 for performance and safety It is important that no alteration is made to the boiler unless approved in writing by Glow worm 0020054593 03 11 Glow worm Any alteration not approved by Glow worm could invalidate the certification boiler warranty and may also infringe the current issue of the statutory requirements CE Mark This boiler meets the requirements of Statutory Instrument No 3083 of the Boiler Efficiency Regulations and therefore is deemed to meet the requirements of Directive 92 42 EEC
9. on the efficiency requirements for new hot water boilers fire with liquid or gaseous fuels Type test for purposes of Regulation 5 certified by Notified body 0087 Product production certified by Notified body 0086 The CE mark on this appliance shows compliance with Directive 2009 142 EC on the approximation of the laws of the Member States relating to appliances burning gaseous fuels Directive 73 23 EEC on the harmonisation of the Laws ofthe Member States relating to electrical equipment designed for use within certain voltage limits Directive 89 336 EEC on the approximation of the Laws of the Member States relating to electromagnetic compatibility appliance has been designed according to the safety techniques and rules in force The compliance of this appliance with the relevant standards has been certified C The CE mark shows that this 5 Guarantee Responsibility 5 1 Detailed guarantee Thank you for installing a new Glow worm appliance in your home Glow worm appliances are manufactured to the very highest standard so we are pleased to offer our customers a Comprehensive Guarantee This product is guaranteed for 24 months from the date of installation or 30 months from the date of manufacture whichever is the shorter for parts and labour The second year of the parts guarantee from the beginning of the 13th month onwards after installation or manufacture is conditional upon the
10. 5 H 0020054593 03 11 Glow worm 217 ANY ASSISTANCE 9 Fault Finding In this section fault codes that are displayed which CAN be carried out by the USER to restore appliance operation Corrective action Other fault codes MUST be solved by a competent person only Like all condensing boilers it will produce a plume of condensation from the flue terminal in cool weather This is due to the high efficiency and hence low flue gas temperature of the boiler It is normal and not a fault indication If any fault persists and your appliance still does not work leave it switched off and contact your competent person 9 1 Electrical Supply Failure The boiler will not work without an electrical supply and normal operation of the boiler should resume when the electrical supply is restored If the boiler does not resume normal operation check the external controls It may be necessary to reset your appliance Toreset the boiler press the reset button see chapter How to use your appliance gt Overview 9 2 Appliance fails to light The LCD will display a flashing F and code number see table below To restart the boiler press the reset button see chapter How to use your appliance Overview Ifthe display shows a flashing pressure of 0 4bar or less then you will need to pressurise the system as described If any fault persists contact your installer service provider or Glow worm Se
11. 9 9 5 Protecting against frost Appliance Protecion In case of the risk of frost Make sure that the electrical and gas supply to the appliance is turned on Foran absence of several days you can leave the appliance to run normally The appliance has a built in frost protection device that protects the boiler from freezing With the gas and electric supplies ON and irrespective of any room thermostat setting the frost protection device will operate the pump when the temperature of the boiler water falls below 8 C A timer is used so that the temperature can be checked periodically After 10 minutes the pump will be stopped if the temperature is higher than 109C or has already reached 359C The burner will activate if the boiler temperature does not reach 10 C after 30 minutes or at any time if the temperature drops to 59C The burner will switch off when the temperature reaches 35 C The appliance always has frost protection active when the power and gas supply are on System Protection The boiler alone cannot ensure that the installation is protected against frost NOTE Any other exposed areas of the system should be protected by a separate frost thermostat In case of prolonged absence where power to the dwelling and the boiler is switched off contact your Installation Servicing company or Glow worm Service to have the installation drained or to have the heating circuit protected by adding an anti freez
12. Glow worm Ultrapower sxi Instructions for Use To be left with the user 100sx G C No 41 019 09 170sx G C No 41 019 10 High Efficiency Condensing System Boilers www glow worm co uk TABLE OF CONTENTS READ CAREFULLY BEFORE USING 1 icu ct RR 3 1 1 Welcome E 3 1 2 Guarantee Pack iran iicet earn 3 MES SSORVICING RE Emm 3 1 4 Benchimark ar ney res ette t iex EEO REEERE 4 1 5 Quick Reference Guide nei een secret 4 2 Introducing your appliarce e teet o deri tree ere Lem aes hee 5 2 1 Appliance description seriinin enne ti erba e ibas 5 2 2 ACCOSSONCS E oe ia ea aei SEHE HER dk erect tu ERR tare cx 5 3 Product documentation 5er Lir ere teet haere extare p teta erento cet 5 3 1 Document storage iue ceret triti ee ble dte e in edax ape 5 3 2 Explanation of symbols sese 5 4 Sr 6 4 1 What to do if you smell gas eem 6 4 2 Safety recommendations ssssseeem e 6 4 3 Safety regulations eene enean ce oae aa auos 6 5 Guarantee Responsibility sinnn oaea a EE a EE E eene ens 8 5 1 Detailed Guarantee sas reen nit arn 8 5 2 Appliance Use Manufacturer responsibility sse 8 6 ste fe goes cU ne ame 9 6 1 Diedraec NR 9 6 2 lae ci se
13. aused by inadequate frost protection Any deterioration or maladjustment following changes in the nature or pressure of the gas or the water used or a change in the characteristics of the electrical supply voltage For further details refer to your Terms and Conditions This appliance is intended to be installed only within the designated countries displayed on the type plate Itis the responsibility of parents guardians and carers that the appliance is protected away from persons under their care 0020054593 03 11 Glow worm 6 Recycling This appliance contains many recyclable parts and should be disposed of according to the current WEEE regulations The packaging should also be disposed of according to the current regulations 6 1 Appliance The appliance must be recycled in compliance with the WEEE Waste Electrical and Electrical Equipment directive which in particular requires selective collection of waste electrical and electronic equipment the systematic selective processing of certain components and substances deemed dangerous reuse recycling and energy recovery of collected WEEE s eb This symbol indicates that this appliance must not be disposed of with household waste that it should be selectively collected for energy recovery reuse or recycling Take the appliance to an appropriate collection point for processing energy recovery and recycling of waste Electr
14. bility can be accepted for damages caused by failure to follow the instructions in this manual 3 2 Explanation of symbols DANGER Risk of injuries ATTENTION Risk of damage to the appliance or to its surroundings IMPORTANT INFORMATION jb 4 Safety 4 1 What to do if you smell gas isolate your gas supply at the gas emergency control valve Eliminate all sources of ignition i e smoking blowlamps hot air guns etc do not operate electrical lights or switches either on or off Open all doors and windows ventilate the area open immediately windows and doors in order to ventilate the property do not search for gas leaks with a naked flame call your gas supplier s emergency phone number alert other building occupants 4 2 Safety recommendations You must comply with the following recommendations and safety instructions Never perform any maintenance or repair of the appliance yourself Only competent persons are allowed to work on the appliance Never tamper with safety devices Do not attempt to modify the appliance or its immediate surroundings as this may affect on the safe use of the appliance Under no circumstances must the user interfere with or adjust sealed parts Do not allow children to operate the appliance Do not obstruct the flue system Certain home improvements may adversely affect the operation of your appliance you should consult your installer for advic
15. e before carrying out any work Do not expose the appliance to high humidity Do not use or store explosive or inflammable materials e g petrol aerosols solvents chlorine based detergents paint glue etc in the same room compartment or cupboard as the appliance Under certain conditions these substances can prove to be corrosive Do not touch the heated surfaces of the appliance such as outlet duct hydraulic connections also after the appliance operation because for a certain time these surfaces may become hot Any contact with them can cause burns This appliance contains metal parts components and care should be taken when handling and cleaning with particular regard to edges In the case of any water leak immediately turn off the cold water supply to the appliance and have the leak repaired by your competent person Do not store or place articles on the appliance 4 3 Safety regulations Servicing maintenance should be carried out by a competent person approved at the time by the Health and Safety Executive in accordance with the rules in force in the countries of destination 0020054593 03 11 Glow worm If this boiler is installed in a rented property in the UK there is a duty of care imposed on the owner of the property by the current issue of the Gas Safety Installation and Use Regulations Section 35 Gas Safety Installation and Use Regulations In your own interests and that
16. e specially designed for heating systems 20 CAUTION Your domestic water circuit hot and cold is not protected by the boiler 9 6 Condensate Drain Blockage As a safety feature the boiler will stop working if the condensate drain becomes blocked During freezing conditions this may be due to the forming of ice in the condense drain external to the house Release an ice blockage by the use of warm cloths on the pipe The boiler should then restart Contact your Installation Servicing company or Glow worm service if the fault persists Disinfection Cycle The cylinder has a built in disinfection cycle which raises the water temperature to 70 C for 1 hour every Wednesday at 2 00am 9 7 Safety Discharge Valve The safety discharge valve and discharge pipe is fitted to the boiler fthere is any discharge from the pipe Switch off the boiler electrical supply then call your Installation Servicing company or Glow worm service 0020054593 03 11 Glow worm 10 Appliance maintenance and servicing 10 1 Cleaning Before cleaning turn the appliance off The appliance casing can be cleaned using a mild liquid detergent with a damp cloth then a dry cloth to polish Do not use any form of abrasive or solvent cleaner as you may damage the paintwork 10 2 Regular servicing Regular servicing of the appliance is important to the prolonged safe and efficient use of your appliance Incorrect or
17. o validate the time intervals The days will automatically change repeat the process or refer to the Copy Function After the 7th day the process will exit to show the boiler status STEP 4 COPY FUNCTION When validating the timed intervals you can hold the PROG button for 5 seconds and the times will be duplicated onto the next day hold the button continually and the times will be copied to all days iii Timed Central Heating a Domestic Hot Water factory preset timed intervals are Factory preset times for preheat are Monday to Friday ON 6 00 OFF 8 00 Monday to Sunday ON 6 00 OFF 24 00 ON 16 00 OFF 23 00 Saturday amp Sunday ON 8 00 OFF 23 00 16 0020054593 03 11 Glow worm Advancing the timed central heating programmer ON OFF times This function will only work when the appliance is in timed operating mode Clock symbol Refer to diagram below The activated deactivated segments will flash for 5 seconds Press and hold for 5 seconds your appliance will operate until the next OFF period or you can cancel by pressing for 5 seconds Nez ie on Advancing the Integral Domestic Hot Water Cylinder programmer ON OFF times Refer to diagram below The activated deactivated segments will flash for 5 seconds Press and hold for 5 seconds your appliance will operate until the next OFF period or you can cancel by pressing for 5 seconds we ON
18. onic and Electrical Equipment By complying with this directive you will contribute to the preservation of natural resources and the protection of human health 0020054593 03 11 Glow worm 6 2 Packaging The competent person who installed the appliance must sort the waste so as to separate those which can be recycled cardboard plastics from those that cannot dispose of the waste in compliance with regulations in force 7 Clearances CLEARANCES from casing panels 5mm clearance to combustible material 150 i A removable compartment door can be placed a minimum 5mm in front of the appliance A clearance of 600mm is required from a fixed surface 10 0020054593 03 11 Glow worm HOW TO USE YOUR APPLIANCE 8 Overview 8 1 Display Description The User Control panel consists of three push buttons a reset button and display which will indicate with symbols the status of the boiler e VU n e ADVANCE LOLOL bar s OFF spem Ext it LJ B 15 Q o BEBE m A 1 E MTWTFSS 4 g me Lo eee 2438 e TOGGLE BUTTON LCD RESET DHW CH MODE and PROG DISPLAY BUTTON TEMPERATURE ADJUSTMENT SYMBOLS DISPLAYED ON THE LCD AND DESCRIPTIONS ttti Central Heating Function Prog Programmer Adjustment Mode P Domestic Hot Water Function Ext Glow worm external control Optional Central Heating D Timed Mode el FF Appliance OFF Min burner display C
19. re that the installer has fully completed the Benchmark Checklist in the inside back pages of the installation instructions supplied with the product and that you have signed it to say that you have received a full and clear explanation of its operation The installer is legally required to complete a commissioning checklist as a means of complying with the appropriate Building Regulations England and Wales All installations must be notified to Local Area Building Control either directly or through a Competent Persons Scheme A Building Regulations Compliance Certificate will then be issued to the customer who should on receipt write the Notification Number on the Benchmark Checklist Please read these instructions and follow them carefully for the safe and economical use of your boiler Do not forget to read the chapters Safety and Guarantee where you will find important information for your safety 0020054593 03 11 Glow worm 1 2 Guarantee Pack The pack contains the letter of introduction and the guarantee The extended guarantee is supplied loose and we recommend that you should read it Complete and return as soon as possible your guarantee registration card If your guarantee registration card is missing you can obtain a copy or record your registration by telephoning the Glow worm Customer Service number 0800 073 2142 1 3 Servicing This product should be serviced regularly to optimise its safe
20. rvice using the telephone number on the inside back cover of this booklet CODE DESCRIPTION POSSIBLE CAUSES Boiler has attempted to light 5 times and failed on all occassions Press the reset button If the fault persists contact your Installation Servicing company or Glow worm F5 jOveheatt Boiler has overheated allow to cool then press reset button 2 18 0020054593 03 11 Glow worm Filling Central Heating System 1 Ensure that the filling loop flexible hose is securely connected to the double check inlet valve see diagram FILLING TAP B 2 Fully open tap A then gradually open tap B to fill the heating system to a pressure of 1 0bar When completed close the filling taps FILLING d TAP A 3 IMPORTANT To comply with the water Inlet Valve regulations the flexible hose must be NNE disconnected from the double check inlet valve undo the nut and pull the flexible hose from the valve 9 3 Appliance safety devices 9 4 Boiler Shutdown The boiler software is designed to recognise the potential for an overheat lockout and will shutdown before this happens Torestart the boiler press the reset button see chapter How to use your appliance gt Overview If the boiler fails to resume normal operation and all external controls are calling for heat then call your Installation Servicing company or Glow worm service 0020054593 03 11 Glow worm 1
21. t from the flue gases this operating principle consumes less energy and contributes to the reduction of your household CO2 emissions This appliance is a room sealed type equipped with a flue system for air supply and the removal of combustion products This flue system offers the possibility to install the appliance in any room without the need for additional ventilation Installation and commissioning of the appliance should only be carried out by a competent person They are responsible for the installation and the commissioning in accordance with standards in force You should also consult a competent person for maintenance and repair of the appliance as well as for any adjustment necessary 0020054593 03 11 Glow worm 2 2 Accessories The Ultrapower sxi is compatible with most makes of 230V programmable room thermostats For increased system compatibility and increased energy saving with intelligent control Glow worm offer a range of controls dedicated to work using a unique communication system eBus low voltage For further details please contact your installer 3 Product documentation 3 1 Document storage Make sure that this manual is stored close to your appliance for future reference Should you move home ensure that this manual is handed over to the new home owners Readthese instructions and follow them carefully for the safe and efficient use of your appliance No responsibility or lia
22. the boiler The name and model badge is positioned on the lower front panel top edge e Ifin doubt seek advice from the local gas company or Glow worm s own service organisation using the telephone number below Tel 01773 828100 21 11 Tips for saving energy Your installer will be able to give energy saving advice about your system and its controls For energy saving advice you can contact the Energy Savings Trust for advice or visit www energysaving trust org uk who offer simple effective advice about saving energy Regular servicing of your boiler will help maintain its efficiency servicing once a year is recommended Turn your thermostat down Reducing your room temperature by 1 C could cut your heating bills by up to 10 percent Set your heating and hot water at the time controller to come on only when required rather than all the time 22 0020054593 03 11 Glow worm 12 Contact your after sales organisation Customer service call Tel 01773 828100 Technical helpline Tel 01773 828300 0020054593 03 11 Glow worm 23 2 2 cos Cd c 0020054593 05 03 11 Because of our constant endeavour for improvement details may vary slightly from those shown in these instructions Glow worm Nottingham Road Belper Derbyshire DE56 1JT
23. ty efficiency and performance The service engineer should complete the relevant Service Record on the Benchmark Checklist after each service The Benchmark Checklist may be required in the event of any warranty work and as supporting documentation relating to home improvements in the optional documents section of the Home Information Pack To ensure the continued efficient and safe operation of the boiler it is recommended that it is checked and serviced at regular intervals The frequency of servicing will depend upon the site conditions and usage but in general once a year should be enough To obtain service please call your installer or Glow worm s own service organisation using the telephone number on the inside back cover of this booklet 1 4 Benchmark Glow worm is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety efficiency and performance 1 5 Quick reference guide We designed this Quick reference guide So that you can start using your appliance right away Press MODE to Er desired function A WW OF ADVANCE 1 Press or to select desired mc temperature Press or to select desired temperature Benchmark is managed and promoted by the Heating and Hotwater Industry Council For more information visit www centralheating
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