You can your User manual for EcoTEC Plus
Contents
1. Caution If you live in a hard water area please do not set the control knob 3 above the mid 12 o clock position to prevent excessive scale for mation 4 5 2 Switching the warmstart function on and off The warmstart system of the ecoTEC combination boil ers provides you with hot water at the required temper ature immediately To do this the hot water heat ex changer of the ecoTEC is kept at a pre selected temper ature level and the boiler will therefore periodically op erate to maintain this temperature ecoTEC plus and ecoTEC exclusive Fig 4 10 Switching the warmstart system on and off with ecoTEC plus and ecoTEC exclusive Activate the warmstart system by briefly turning the knob 1 all the way clockwise position a Then select the desired hot water outlet temperature again e g setting b refer to Section 4 5 1 The appli ance automatically adapts the hot holding temperature to the set hot water temperature The tempered water is directly available at the taps the symbol C flashes in the display Switch off the warmstart system by briefly turning the knob 1 all the way anti clockwise position c The symbol C disappears Then select the required hot water outlet temperature again e g setting b Instructions for use ecoTEC 838402 05 ecoTEC pro Fig 4 11 Switching the warmstart system on and off with eco TEC pro Activate the warmstart syste2. Instructions for use ecoTEC 838402 05 Caution Inappropriate modifications can cause damage If your boiler still does not operate then please consult your installer or Vaillant Service Solu tions 0870 6060 777 4 8 1 Problems due to low system water pressure The device switches to Fault if the water pressure in the heating system is too low This malfunction is indi cated by the fault code F 22 dry fire or F 23 or F 24 lack of water You can only start up the appliance again when the heating system is sufficiently filled with water 4 8 2 Ignition problems plus exclusive WF a Fig 4 17 Troubleshooting If the burner fails to ignite after five attempts the de vice does not start up and switches to Fault This is in dicated by the fault code F 28 or F 29 in the display On ecoTEC plus appliances the display also shows the flame symbol with a cross through it 1 On ecoTEC pro appliances the red LED 2 also lights up Automatic ignition can only take place after you manu ally reset the fault e To reset the fault press the reset button 3 and hold it down for one second Caution If the boiler still shuts off after three attempts of resetting please consult your installer or Vaillant Service Solutions 4 8 3 Flue problems The appliances are fitted with a fan If the fan does not work
3. current edition of 1 S 813 Domestic Gas Instal lations the current Building Regulations and reference should be made to the current ETCI rules for electrical installation Caution The appliance may only be operated with its case properly and permanently closed Otherwise in unfavourable conditions material damage or even injury or death can result Filling pressure of the heating system Regularly check the filling pressure of the heating sys tem see 4 3 2 Leaks ecoTEC combination boiler only If there is a leak in the water pipes between the appli ance and the taps immediately turn off the cold water service valve and have your engineer repair the leak Frost protection Your boiler is equipped with a frost protection function If the heating water temperature drops below 5 C when the main switch is ON then the boiler goes into opera tion and heats the boiler circuit to approx 30 C CFP Note It cannot be guaranteed that water will circu late throughout the entire heating system If the boiler is not operated for several hours during very cold weather there is therefore the possibility of the system freezing Please ensure that if you are absent during a period of frost the central heating remains in operation and all rooms are kept above freezing point It must be remembered however that the boiler will be automatically switched off by the built in monitoring de vices if certain faults occur
4. i info vaillant co uk 838402_05 GB 06 2007
5. system provides information on the operating status of your appliance During normal operation the display 1 shows the cur rent heating flow temperature in this example 45 C In the event of a fault an error code appears instead of the temperature The ecoTEC exclusive display has also cleartext for a direct information The display also gives the following information Indication of the current heating system flow temperature or water pressure in the heating system or display of a status or error code Actual setting of the modulation only ecoTEC exclusive Clear text display only ecoTEC exclusive of Fan speed malfunction Fan speed malfunction As long as this symbol appears in the display a heating flow temperature and hot water out let temperature is set by the vrnetDIALOG ac cessory which means the appliance uses tem peratures other than those set using the con trols 9 and 10 This condition can only be ended using vrnetDIALOG or by achange in temperature at controllers 9 or 10 of more than 5K This condition cannot be ended with the Reset button 8 or by turning the appliance off or on Heating mode active Illuminated Heating mode Flashing Anti cycling mode active Hot water supply active ecoTEC plus combination boilers only Illuminated Hot water demand ecoTEC system boilers only Illuminated Heating of an indirect hot water cylinder turned on
6. 8 4 3 1 Opening the Service valves 8 4 3 2 Checking the system pressure 9 4 4 Turning the boiler ON ee 9 4 5 Domestic hot water with ecoTEC combination boilers fore RR Rhine 4 5 1 Setting the water temperature 4 5 2 Switching the warmstart function on and off 10 4 5 3 Drawing hot water ecoTEC combination boilers Only Jistri 11 4 6 Heating operation s ssessesessessesessessesersessesessessesees 11 4 6 2 Switching off heating summer operation 12 4 6 3 Setting a room or outside temperature CONTONE T sessceaseces Gsnlssatesseeecutts leceonlseesscndsaessasescrererteeeese 12 4T Status displays cdscccccccccccsscscessoncersecensccorsevecstvseecsesees 12 4 8 gt Troubleshooting LA 13 4 8 1 Problems due to low system water pressure 13 4 8 3 Flue problems ssssesesessssesesesessssesesesesessesesesessssesesesesess 13 4 9 Turning off the boOilef sesessessesessessessssessesessessesesse 14 410 FOS PrOt Ctlonns secs decsessascoataces Sesssstdeesigndeecesee sedate 14 4 11 Maintenance and customer service aaa aaa 14 2 Specified use The Vaillant ecoTEC plus ecoTEC pro and ecoTEC exclusive models are compact wall mounted condensing boilers ecoTEC plus and pro combination boilers provides both central heating and domestic hot water with the domes tic hot water supplied directly from
7. needed under the terms of our Guaran tee If you are unable to contact your installer phone Vaillant Service Solutions 0870 6060 777 3 2 Intended use Vaillant ecoTEC boilers are state of the art appliances which have been constructed in accordance with recog nised safety regulations Nevertheless there is a risk of injury or death to the user or others and damage to the appliance or other property in the event of misuse or use for which the appliance is not intended The appliances are designed to generate heat for con nected hot water central heating systems Any other use is considered to be use other than intended The manufacturer supplier is not liable for any resulting damage The user alone bears the risk Intended use includes the observance of the operating and installation manual and all other applicable docu ments as well as adherence to the maintenance and in spection conditions A Caution Any incorrect use is forbidden Instructions for use ecoTEC 838402 05 3 3 Care e Clean the exterior your appliance with a damp cloth and a little soap ECF Note Do not use scouring or cleaning agent which might damage the housing or plastic fittings 3 4 Recycling and disposal Both your Vaillant ecoTEC boiler and its packaging con sist mainly of recyclable raw materials 3 4 1 The appliance Do not dispose of your Vaillant ecoTEC boiler or any of its accessories with household waste Make sure the old appl
8. EIV ill F For the owner al an Instructions for use ecoTEC Wall hung room sealed fan assisted condensing boilers Bm 8 8 I GB SDecified US 0866 2 1 Notes on these instructions ee 2 1 1 Storage of the dOCUMEnNtS sssssessssessesessesseseesess 2 1 2 Symbols used in this manudl 3 1 3 CE marking 3 1 4 Data Dag Giccccicsecsssiccsssesceeesassasaitevtstenssessscatanedbeessseatete 3 2 S ICA A EA EEA E EE 3 2 1 Setup and adjustments 3 2 3 Safety instructions 3 2 4 Modifications in and around the boiler 3 3 Instructions on Operation csssccssrsssscssees 5 3 1 Factory guarantee wu esecesesssesesescscesesesssesesesessseeeees 5 3 1 1 Two year guarantee for ecoTEC plus and ecoTEC exclusive boilerS 5 3 1 2 One year guarantee for ecoTEC pro boilers 5 3 1 3 Registering with US 5 3 1 4 Immediate help 5 32 Intended USE esse sscssscscsctacesesaatsn n 5 Bio GRG 5 3 4 Recycling and disposal 5 BAL The appliance vizcccsescceccsssvsssssssscencarssdessccovscensssvsesssesetss 5 3 4 2 PACKAGING tieecassvessssvercevercsstesevenrctesandaaete nucaedgesveaeionavees 5 4 Operation 68480 6 4 1 Overview of controls on ecoTEC plus ANd ecoTEC exclusive ee 6 4 2 Overview of controls on ecoTEC pro 7 4 3 Initial checks before turning on
9. Flashing Heating demand from the hot water cylinder burner on Instructions for use ecoTEC 838402 05 Warmstart system active ecoTEC plus combination boilers only Illuminated Warmstart turned on Flashing Warmstart demand burner on Internal pump is running Gas valve is activated P4 O Flame with cross Boiler is at lock out and will display fault code Ns z Flame without cross W Normal burner operation 4 2 Overview of controls on ecoTEC pro Fig 4 4 ecoTEC pro indicator lights 1 Display indicating flow temperature or the system pressure or the relevent fault code 2 Green warmstart indicator Illuminated Warmstart switched ON Not illuminated Warmstart is switched OFF and there is no demand for hot water Flashing There is either a demand for hot water or warmstart 3 Yellow indicator llluminated Main burner ignited 4 Red indicator Illuminated Boiler is at lock out and will display fault code 6 oo R As long as this symbol appears in the display a heating flow temperature and hot water outlet temperature is set by the vrnetDIALOG accessory Fig 4 3 ecoTEC pro controls which means the appliance uses temperatures other than those set using the controls 10 and 11 Display indicating the current heating flow temperature the pressure in the heating system or additional information This condition c
10. an only be ended 2 Indicator lights to display the current operating mode using vrnetDIALOG or AN ote ana Pana by achange in temperature at controllers 10 4 Built in control timer if fitted y g p 5 Pressure gauge displaying the pressure in the heating system or 11 of more than 5K 6 Main ON OFF control ae 7 button for moving forward in the display This condition cannot be ended 8 button for moving back in the display or for displaying the with the Reset button 9 or pressure in the heating system by turning the appliance off or on 9 Reset button 10 Maximum radiator temperature control 11 Maximum hot water temperature control and warmstart ON OFF Multifunctional display system ecoTEC pro boiler has a multifunction display 1 When the main ON OFF control is in the ON position the dis play will normally show the system CH flow temperature of water in the boiler circuit 45 C in the example which confirms that the boiler is functioning correctly Instructions for use ecoTEC 838402 05 7 4 3 4 3 1 Initial checks before turning on Opening the service valves ecoTEC plus and pro Note If a bottom cover is fitted to the boiler the service valves are behind this cover Ensure that the service valves in the heating flow and return 4 and 1 and the gas service valve 3 are open The flow return and gas service valves are open when the screwdriver slot is in the same direction a
11. and commissioning 1 4 Data badge The type plate of the Vaillant ecoTEC is attached at the factory to the bottom of the appliance Instructions for use ecoTEC 838402 05 2 Safety 2 1 Setup and adjustments Installation and adjustment of the boiler as well as serv ice maintenance and repair of the boiler may only be carried out by a competent person in accordance with the Gas Safety Installation and Use Regulations 1998 In the U K CORGI Registered installers undertake the work to a Safe and satisfactory standard If the boiler is installed in a compartment do not obstruct any purpose provided ventilation openings and do not use the com partment for storage purposes 2 2 What to do in an emergency Danger Smell of gas Risk of poisoning and explosion due to a malfunction If you smell gas or suspect a gas leak Do not switch lights on or off Do not use any other electrical switches Do not use a telephone in the hazardous area Do not use naked flames such as matches or ciga rette lighters Do not smoke Turn off the gas supply at the gas meter Open the windows and doors Warn other residents Get out of the house Consult your gas supplier service agent or other com petent person 2 3 Safety instructions Always observe the following safety instructions and regulations Danger Inflammable mixtures of gas and air may ex plode Do not use or store explosive or easily fla
12. cording to your requirements read sections 4 5 and 4 6 which describe the setting options for hot water supply and heating Caution Risk of damage The boiler frost protection and monitoring sys tems are only active when the main ON OFF control of the appliance is in the 1 position and it is not disconnected from the main power supply Domestic hot water with ecoTEC combination boilers The boiler must only be used when the heating system contains water see 4 3 2 4 5 4 5 1 Setting the water temperature plus exclusive pro 0 JJ5 my Ox O Fig 4 9 Setting the water temperature e Switch on the appliance as described in section 4 4 The domestic hot water temperature can be adjusted using the hot water temperature control 3 Turn the control clockwise to increase the tempera ture and anti clockwise to decrease the temperature This corresponds to left limit approx right limit max 35 C 65 C CF Note This control adjusts the maximum domestic hot water temperature If adjusting the control up wards appears to have no effect on the temper ature then the boiler is already operating at full output for the selected flow rate When you adjust the required temperature the set value is shown in the display 2 After five seconds the display returns to standard mode the current heating flow temperature
13. ding these instructions you have any ques tions on the operation of the boiler please contact ei ther your installer or Vaillant Technical Department 1 1 Storage of the documents Please store this user manual and all related documents so that they are available whenever they are required If you move please pass on the documents to the buyer Instructions for use ecoTEC 838402 05 1 2 Symbols used in this manual Please observe the safety instructions in this operating manual for the operation of the appliance Danger Immediate risk of serious injury or death A Caution Potentially dangerous situations for the prod uct and environment Note Useful information and instructions Symbol for a necessary task 1 3 CE marking The purpose of CE marking is to certify that the boiler complies with the requirements of the directives cover ing gasfired appliances Council directive 90 396 EEC and electromagnetic compatibility Council directive 89 336 EEC These appliances also comply with the re quirements of the directive on operating efficiency Council directive 92 42 EEC LLEN benchmark The mark of quality for domestic heating C Note Vaillant Ltd support the Benchmark initiative At the rear of the installation manual you will find the Benchmark gas boiler commissioning checklist It is very important that this is com pleted correctly at the time of installation
14. e g interruption in the gas or electricity supply or faults in the flue gas system To overcome this possibility you can drain both the central heating system and boiler Er Note Frost protection and monitoring devices can only function when the main switch of the unit is set to the I position and the boiler is con nected to the electrical supply Instructions for use ecoTEC 838402 05 3 Instructions on operation 3 1 Factory guarantee 3 1 1 Two year guarantee for ecoTEC plus and ecoTEC exclusive boilers Vaillant undertakes to rectify any manufacturing defect that occurs within twenty four months of the installa tion date For the 2nd year of the guarantee to be valid an annual service must be carried out by a CORGI registered in staller one year after installation The cost of this annual service is not included in the guarantee 3 1 2 One year guarantee for ecoTEC pro boilers Vaillant undertakes to rectify any manufacturing defect that occurs within twelve months of the installation date 3 1 3 Registering with us Registration is simple Just complete the Guarantee Registration Card and return to Vaillant within 30 days of installation Your details will then be automatically registered within the Vaillant scheme C Note No receipt will be issued 3 1 4 Immediate help If your Vaillant boiler develops a fault your first action should be to contact your installer as his professional assessment is
15. e heating system to operate properly the indicator on the pressure gauge must be in the dark grey zone when the system is cold This is a filling pressure between 1 0 and 2 0 bar If the indicator is in the light grey area below 0 8 bar fill the system up with water before putting the boiler into operation Note The ecoTEC boiler has a pressure gauge and a digital pressure display The pressure gauge allows you to quickly check whether the filling pressure is in the correct range even when the appliance is switched off When the appliance is in operation you can see the exact pressure in the display Activate the pressure display by pressing the button 2 After 5 seconds the display returns to the flow temperature Note Your appliance has a pressure sensor If the pressure falls below 0 6 bar the pressure flashes in the display If it falls below 0 3 bar the appliance switches off The error message F 22 appears in the dis play The system must be filled with water be fore you start up the appliance again Instructions for use ecoTEC 838402 05 4 4 Turning the boiler ON Fig 4 8 Switching on the appliance example ecoTEC plus Use the main ON OFF control to switch the appliance on ON 0 OFF When you switch on the appliance the current operat ing status appears in the display 2 To adjust the appliance ac
16. errun S 7 Pump overrun S 8 Anti cycling mode after heating operation S 30 Room thermostat 3 4 no heating demand S 31 Summer mode active S 34 Frost protection mode Displays in hot water operation ecoTEC combina tion boilers only S 10 Hot water demand S 14 Burner ignited Displays for hot holding operation ecoTEC combination boilers only S 20 Hot holding request S 24 Hot burner holding operation on Displays in cylinder charging mode ecoTEC system boilers only S 20 Cylinder charging request S 24 Cylinder charging burner on Table 4 1 Status codes selection a complete set of status codes can be found in the installation and servicing manual CF Note The ecoTEC exclusive display has also cleartext for a direct information 4 8 Troubleshooting In the unlikely event that a problem occurs with the op eration of the ecoTEC boiler the following points should be checked Boiler fails to operate Is the gas supply turned on see 4 3 1 ls the water supply turned on ecoTEC combination boilers only see 4 3 1 Is there enough water in the heating system see 4 3 2 Is the electrical supply switched ON Is the main ON OFF control in the ON position switch position I see 4 4 Is there an ignition problem see 4 8 2 Hot water operates but no central heating ecoTEC combination boilers only Is the heating turned ON see 4 6 1 Are all external heating controls ON see 4 6 3
17. iance and any existing accessories are disposed of properly 3 4 2 Packaging Please leave the disposal of the transport packaging to the expert company which installed the appliance Cr Note Please observe the applicable national legal regulations 4 Operation 4 1 Overview of controls on ecoTEC plus and ecoTEC exclusive 2 A KABA a ELMDCOX CIL i 3 Fig 4 1 ecoTEC plus and ecoTEC exclusive controls For access to the controls open the front flap by pulling at the centre of the case strip 1 Display indicating the current heating flow temperature the pressure in the heating system the operating mode or addi tional information 2 The i information button 3 Built in control timer if fitted 4 Pressure gauge displaying the pressure in the heating system 5 Main ON OFF control 6 button for moving forward in the display 7 button for moving back in the display or for displaying the pressure in the heating system 8 Reset button 9 Maximum radiator temperature control 10 Maximum hot water temperature control and warmstart ON OFF control ecoTEC plus combination boilers only Advanced multifunctional display system Fig 4 2 Display on ecoTEC plus and ecoTEC exclusive The ecoTEC plus and ecoTEC exclusive appliance is fit ted with a digital information and analysis system This
18. ination boilers will also pro vide domestic hot water on demand After the boiler stops operating the pump will continue to operate for a short period to fully disperse the heat from the boiler Note The boiler incorporates an anti cycling eco nomiser control to prevent energy wasteful ON and OFF operation of the boiler for short periods when in the central heating mode When turning the room thermostat to a higher setting there may therefore be a short delay before the boiler operates 4 7 Status displays plus exclusive pro eje 2 m4 Ox O Fig 4 16 Status displays The status displays provide information on the operat ing status of the appliance Press the i button 1 to activate the status displays The display 2 then shows the current status code for example S 4 for burner operation The table below explains the most important status codes In switching phases for example on starting up again after the flame was extinguished the status message S briefly appears Press the i button 1 again to switch the display back to normal mode Instructions for use ecoTEC 838402 05 Display Meaning Displays during heating operation S 0 No heat required S 1 Pump running S 3 Ignition sequence heating operation S 4 Burner ignited S 6 Fan and pump ov
19. m by briefly turning the knob 1 all the way clockwise position a The green LED 2 lights up Then select the required temperature e g setting b see 4 5 1 The water is kept at a constant temperature of 55 C and is available immediately as you turn on a tap Switch off the warmstart system by briefly turning the knob 1 all the way anti clockwise position c The green LED 2 goes out Then select the required hot water outlet temperature again e g setting b 4 5 3 Drawing hot water ecoTEC combination boilers only Vaillant Fig 4 12 Drawing off hot water example ecoTEC plus On opening a hot water tap 1 at a supply point basin shower bath etc the ecoTEC combination boiler will automatically operate to deliver hot water On closing the tap the boiler switches OFF or continues to operate for central heating if required Instructions for use ecoTEC 838402 05 4 6 Heating operation The boiler must only be used when the heating system contains water see 4 3 2 4 6 1 Setting the maximum radiator temperature control plus exclusive pro 0 H5 45 ma Ox o Fig 4 13 Setting the maximum radiator temperature control Set the maximum radiator temperature control to the desired setting using the control knob 1 We recommend the following settings Left setting during spring and autu
20. mma ble substances such as petrol or paint in the same room as the appliance Danger Risk of poisoning and explosion due to a mal function Never put the safety devices out of operation or tamper with them so as to impair their func tion 2 4 Modifications in and around the boiler No modifications may be made to the following items The boiler The gas water and electrical supply The flue system The safety valve for the heating water Any structural changes around the appliance that could affect the operational safety of the boiler Caution Inappropriate modifications can cause damage Never tamper with the boiler or other parts of the system Never attempt to perform maintenance or re pairs yourself Do not damage or remove seals on components Only authorised engineers or our customer service may re moved sealed components Danger Risk of scalding The water coming out of the tap can be very hot ecoTEC combination boiler only Caution Risk of damage Do not use sprays solvents chlorinated clean ing agents paint adhesives or similar sub stances in the vicinity of the appliance These substances can cause corrosion including in the flue system Installation and setting Important The appliance must be installed and serviced by a competent person as stated in the Gas Safety Installation and Use Regulations 1998 In IE the installation must be in accordance with the
21. mn Middle setting during mild winter Right setting during cold winter When you adjust the temperature the set value is shown in the display 2 After five seconds the display returns to standard mode the current heating flow tem perature Normally you can adjust the knob 1 continuously up to a flow temperature of 75 C However higher tempera tures can be set on your appliance have your engineer make adjustments so that you can operate the heating system at higher flow temperatures 11 4 6 2 Switching off heating summer operation Fig 4 14 Switching off heating summer operation You can switch off the heating in summer without switching off the hot water supply Turn the knob 1 for setting the maximum radiator temperature all the way to the left 4 6 3 Setting a room or outside temperature controller Fimi Fig 4 15 Setting a room or outside temperature controller Set the room thermostat 1 and or the thermostatic radiator valves 2 according to the instructions sup plied with the control s Cr Note Vaillant offer room thermostat time control ac cessories which give accurate and economic room temperature control as well as improved comfort The boiler will now operate automatically to provide central heating for the conditions selected on the exter nal controls ecoTEC comb
22. onnected from the main power supply Frost protection function The boiler has a frost protection function If the heating flow temperature falls below 5 C with the main ON OFF control turned on the appliance starts up and heats the boiler to 30 C A Caution Parts of the system may freeze The frost protection function cannot guarantee that water flows through the entire heating system 4 11 Maintenance and customer service Inspection and maintenance Permanent operational readiness reliability and a long service life require inspections and maintenance work to be regularly carried out by a heating engineer or Vaillant For further details please contact Vaillant Service Solu tions 0870 6060777 Danger Risk of injury and damage due to improper handling Never attempt to perform maintenance or repairs on the appliance yourself Have a specialist heating company do the work We recommend signing a service agreement The reliability of the appliance can be impaired resulting in damage to property or personal injury if maintenance work is not carried out Regular servicing ensures maximum efficiency and eco nomical operation of your gas boiler Instructions for use ecoTEC 838402 05 HALHA 5 mee pa Vaillant Ltd Vaillant House u Medway City Estate Trident Close Rochester Telephone 01634 292300 a Fax 01634 290166 www vaillant co uk i Kent ME2 4EZ
23. properly the appliance will switch itself off The display shows the symbols and and the fault message F 32 CP Note If contacting Vaillant Service Solutions please remember to quote the fault code as this will help to pinpoint the fault 4 9 Turning off the boiler Fig 4 18 Switching off the appliance Turn the main ON OFF control 1 to the 0 position Caution The boiler frost protection and monitoring sys tems are only active when the main ON OFF control of the appliance is in the 1 position and it is not disconnected from the main power supply To ensure that these protection devices remain active switch your boiler on and off using the external controller Note If the appliance is switched off for a long time for example when you are on holiday you should also turn off the gas supply the cold water service valve and the electrical supply CF Note Do not turn the ecoTEC system boilers OFF if a hot water cylinder is also incorporated in the system unless there is no demand for domestic hot water 4 10 Frost protection The frost protection feature only protects the boiler Any other parts of the system liable to frost damage should be protected accordingly Caution The frost protection and monitoring systems are only active when the main ON OFF control of the appliance is in the I position and it is not disc
24. s the pipework On ecoTEC combination boilers only Ensure the cold water service valve 2 is open This can be checked by opening a hot water tap and ensur ing water flows Fig 4 5 Opening the service valves on ecoTEC plus combina tion boilers Fig 4 6 1 Opening the service valves on ecoTEC system boilers Caution The pressure relief valve is provided for safety reasons and must not be interfered with ecoTEC exclusive Fig 4 6 2 Opening the service valves on ecoTEC exclusive Ensure the cold water service valve 2 is open This can be checked by opening a hot water tap and ensur ing water flows Ensure that the service valves in the heating flow and return 4 and 3 and the gas service valve 1 are open The flow return and gas service valves are open when the line marking has the same direction as the pipe Attention The pressure relief valve is provided for safety reasons and must not be interfered with Note A bottom cover is fitted to the appliance The service valves are fitted behind this cover Instructions for use ecoTEC 838402 05 4 3 2 Checking the system pressure plus exclusive i ig my Ox Fig 4 7 Checking the filling pressure of the heating system Check the water pressure of the system using the pressure gauge 1 before putting the boiler into oper ation For th
25. the boiler The boiler will operate automatically to provide domestic hot water whenever a hot water tap is opened and automatically adjusts to meet the demand for both central heating and domestic hot water in the most economical way ecoTEC system boilers provides central heating and do mestic hot water where a separate indirect hot water cylinder is also incorporated to the system 1 Notes on these instructions To ensure clarity of information in instructions a new European standard of advice and symbols is being intro duced To ensure compliance with this new standard the following details are included The following information is intended to help you throughout the boilers entire instruction pack We assume no liability for any damage caused by not following these instructions Other instruction supplied with this appliance For the end user Short operating instructions ecoTEC plus and ecoTEC exclusive only no 838404 Warranty card with return envelope 2 years no 809222 1 year no 802961 For the installer service engineer Instructions for installation and servicing for ecoTEC plus and pro no 839592 for ecoTEC exclusive no 0020017768 Flue installation instructions no 834449 The instructions for any accessories and controllers used also apply The Benchmark gas boiler commissioning checklist in the installation manual should be completed by the in staller and or the commissioning engineer If after rea
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