User Manual
Contents
1. ON position RE PRESSURING THE SYSTEM The system will need re pressurising if the red LED is illuminated and the pressure gauge is reading below 0 4bar Locate the filling valve and if necessary connect the loop fig 2 slowly open the valve until you hear the water entering the appliance The red LED will go out first Go on with re pressuring until the pressure shown on the manometer is between 1 amp 1 5 bar fig 3 The appliance must not be operated until the system has been re pressurised If in doubt contact your installer SHUT DOWN THE SYSTEM FOR SHORT PERIODS The system can be shut down for short periods by simply turning the mode selector to the OFF position It is also advisable to turn off the main water supply to the house SHUT DOWN THE SYSTEM FOR LONG PERIODS If the house is to be left unoccupied for any length of time especially during the winter the system should be thor oughly drained of all water The gas should be turned off at the meter and the main water supply should be turned off at the stopcock If necessary contact your installer for further advice CARE FOR THE APPLIANCE To clean the outer casing use only a clean damp cloth Do not use any scourers or abrasive cleaners APPLIANCE LED STATUS INDICATOR control valve Fig 2 temporary connection control valve y 14 f fl t ow re al double check pipe valve A supply pipe Fig 3 correct pressure value COL2. D KNOW 1 1 GAS APPLIANCE 1 4 EXPLANATION OF FEATURES Gas safety Installation and Use regulations Although the Mynute EHE has been designed for simplicity In the interests of your safety and that of others it is a legal of use it utilises the latest in boiler technology enabling a requirement that all gas appliances are installed and cor host of functions to be carried out simultaneously rectly maintained by a competent person and in accordance 444 FROST PROTECTION MODE with the latest regulations This function is only active when there are no requests for 1 2 ELECTRICAL SUPPLY heating When the temperature inside the appliance drops Please ensure that this appliance has been properly con below 5 C the boiler will operate on minimum output until the nected to the electrical supply by means of a double pole temperature within the appliance reaches 35 C isolator or un switched socket and that the correct size of 1 4 2 AUTOMATIC TEMPERATURE CONTROL fuse 3 amp has been fitted The automatic temperature control function SARA permits Warning this appliance must be earthed the boiler when the heating temperature selector is set within 1 3 EXPLANATION OF CONTROLS the AUTO sector to automatically adjust raise the heating The control panel includes a boiler thermostat ON OFF flow outlet temperature during inclement weather RESET switch pressure gauge and status LED 1 4 3 ANTI SEIZE FUNCTION 1 3 1 SELECTOR SWITCH AT Should t
3. OUR FREQUENCY FAULTS STATUS ACTION REQ D Green Flashing every 6 seconds At stand by with no faults None Flashing 8 times every second SARA function None On every 0 5 second Temporary fault Wait Yellow On every 0 5 second Service function Contact service centre Red On every 0 5 second Safety shutdown and or final fault Call service centre Solid Appliance overheat Call service centre M YN UTE E H WHAT IF 4 1 4 2 4 3 4 4 4 5 SUSPECT A GAS LEAK If you suspect a gas leak turn off the gas supply at the gas meter and contact your installer or local gas supplier If you require further advice please contact your nearest Vokera office FREQUENTLY TOP UP OR RE PRESSURISE THE SYSTEM If the system regularly requires topping up or re pressuris ing it may be indicative of a leak Please contact your installer and ask him to inspect the system THE FAULT LIGHT IS ON If the red LED is illuminated it indicates that the appliance has locked out or has an internal fault To reset the appliance make sure the gas supply is on to the appliance Turn the mode selector switch to the OFF position for a few seconds and then turn it back to its previous position If the red LED stays on or is illuminated after a few seconds call an engineer THE APPLIANCE IS DUE ITS ANNUAL SERVICE Advice for tenants
4. Vokera heating for life Mynute EHE High efficiency system boiler Users Instructions Ce THESE INSTRUCTIONS TO BE RETAINED BY USER THE MARK OF QUALITY FOR THE INSTALLATION COMMISSIONING AND SERVICING OF DOMESTIC HEATING AND HOT WATER SYSTEMS k ra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK Contents Introduction Page Howto Page Dear customer 2 3 1 Use the appliance for the 1 time 4 Do s and don t s 2 3 2 Use the mode selector switch 4 3 3 Re pressuring the system 4 Things you should know Page 3 4 Shut down the system for short periods 4 1 1 Gas appliance 3 3 5 Shut down the system for long periods 4 1 2 Electrical supply 3 3 6 Care for the appliance 4 1 3 Explanation of controls 3 1 3 1 Mode selector switch 3 Whatif Page 1 4 Explanation of features 3 4 1 suspect a gas leak 5 1 4 1 Frost protection mode 3 4 2 frequently have to top up the system 5 1 4 2 Automatic temperature control 3 4 3 The fault light ison 5 1 4 3 Anti seize function 3 4 4 The appliance is due its annual service 5 1 4 4 Appliance status indicators 3 4 5 need to call an engineer 5 1 3 Guarantee r
5. egistration carg E Vokera timeclock accessory Page Getting started Page 5 1 Vokera timeclock 6 2 1 Before switching on 3 2 2 Appliance controls 3 2 3 Lighting the boiler 3 INTRODUCTION Dear Customer Your Mynute EHE boiler has been designed to meet and exceed the very latest standards in gas central heating technology and if cared for will give years of reliable use and efficiency Your Mynute EHE is a System boiler that provides heated water to radiators and or a hot water cylinder Features included are LED indicators showing the status of the appliance and system pressure gauge frost protection and anti pump seize function Please therefore take some time to read these instructions carefully Do s and don t s e Do ensure that the system pressure is periodically checked e Do ensure that you know how to isolate the appliance in an emergency e Do ensure that you are familiar with the appliance controls e Do ensure that your installer has completed the appliance log book e Do not attempt to remove the appliance casing or gain internal access e Do not hang clothes etc over the appliance e Do not operate on sealed components e Do not forget to have the appliance serviced annually Fig 1 1 Pressure gauge 2 Mode selector switch 3 Fault indicator led 4 Temperature selector 5 Timeclock aperture optional M YN UTE E H E THINGS YOU SHOUL
6. er fitted to the appliance if so instructions can e how to isolate the appliance from the gas water and be found on page 6 If an external time clock or programmer electricity supplies has been fitted please refer to the instructions supplied e howto check and top up if necessary the system water with such no 23 LIGHTING THE BOILER e the time clock or programmer E th d electrical lv to the boil m d e any external thermostats and their functions NSure iNe gasan iad nipa supp y O el a ala q Turn the mode switch to the on position Refer to the e the appliance controls A particular instructions for the type of programmer or time 2 2 APPLIANCE CONTROLS see fig 1 clock fitted and ensure there is a demand for heating and M YN UTE The appliance controls are concealed behind the front flap To gain access to the controls simply lift upward to engage the holding clip The appliance has a mode switch variable thermostat system pressure gauge and an aperture for an integral clock or programmer The mode switch has three positions e Reset e Off e On The variable thermostat allows you to set the temperature of the water to your radiators and hot water cylinder not the hot water to your taps between 40 C min and 80 C max The pressure gauge shows the current pressure of the system the gauge should be set between 1 and 1 5 BAR When the appliance is operating the gauge may rise or fall slightly this is quite nor
7. he appliance remain inactive for a period of 24 OFF when the selector switch is in the OFF position the hours the pump will be activated for a few seconds to prevent appliance will not function for hot water or heating However seizure the appliance will still operate in frost protection mode and 444 APPLIANCE STATUS INDICATORS if unused for a period of 24 hours will momentarily activate The Mynute EHE has status indicators that show if the the pump to prevent seizure due to non use appliance is working normally if it needs topping up or re se must have an electrical supply at alltimes for non on the frost protection and anti seize modes to operate 1 5 GUARANTEE REGISTRATION CARD f ee a Please take the time to fill out your guarantee registration ON when the selector switch an the ON position and any card The completed warranty card should be posted within external controls such as time switch room thermostat 30 days of installation cylinder thermostat are calling for heat the boiler will oper ate to provide heating and or hot water until the demand has been satisfied These instructions should be read in conjunction with any other instructions for controls that may have been fitted by your installer GETTING STARTED 2 1 BEFORE SWITCHING ON Depending on the type of controls specified by your in Before switching the appliance on please familiarise your staller you may have an integral Vokera time clock or self with programm
8. mal The minimum permissible level for the safe and efficient operation of the appliance is 0 5 bar Should the pressure fall below 0 5 bar the boiler shuts off automatically EHE or hot water Ifthere is a room thermostat and or hot water cylinder thermostat you should ensure these are also calling for heat When there is a demand for heating and or hot water via the above controls the boiler will go through an ignition se quence whereby the burner will light If the appliance fails to ignite during the ignition sequence allow a period of two minutes before re setting To adjust the output temperature of the appliance turn the thermostat knob clockwise to increase or anti clockwise to decrease When the appliance reaches the set temperature the burner will go off for minimum period of approximately 3 minutes When the programmer time clock or external thermostats heating request has been satisfied the appliance will switch off automatically HOW TO 3 1 3 2 3 3 3 4 3 5 3 6 USE THE APPLIANCE FOR THE FIRST TIME Before switching the appliance on please familiarise your self on how to isolate the appliance from the electricity gas and water supplies If in doubt contact your installer USE THE MODE SELECTOR SWITCH Turn the mode selector switch to the OFF position switch on the electrical supply to the appliance The green LED should be flashing you may now switch the boiler selector switch to the
9. only Your landlord should arrange for servicing Advice for homeowners Please contact Vokera Customer Services 05655057 if you would prefer a Vokera service engineer or agent to service your appliance Alternatively your local Bord Gas approved engineer may be able to service the appliance for you NEED TO CALL AN ENGINEER If you think your boiler may have developed a fault please contact your installer or Vokera Customer Services 05655057 have all your details to hand including full address and relevant contact numbers MINIMUM CLEARANCES Please observe the following minimum clearances required for the safe operation and maintenance of this appliance Above the appliance 150mm 6 inches Below the appliance 150mm 6 inches Left hand side of appliance 50mm 2 inches Right hand side of appliance 12mm 1 2 inch In front of appliance 600mm 24 inches M YN UTE E H E VOKERA TIMECLOCKS accessory 5 1 VOKERA TIME CLOCK These instructions relate only to the Vokera mechanical time clock If you have a time clock that is fitted external to the boiler then you should refer to the instructions supplied with such Ifin doubt contact your installer for further advice or assistance Fig 4 Off Auto On Setting the time The time of day can be set by grasping the outer edge of the black dial and turning it in a clockwise direction until the correct time is in line with
10. the white pointer Setting the switching times The ON periods are set by sliding the black tappets adjacent to the time periods required to the outer edge of the dial The tappets that remain at the centre of the dial will be the OFF periods The smallest switching time ON or OFF is 15 minutes To select Auto mode move the selector switch in central position To select On mode move the selector switch in the bottom position To select Off mode move the selector switch in the upper position M YN UTE E H M YN UTE E H Vokera heating for life Registered address Vok ra Ltd Borderlake House Unit 7 Riverside Industrial Estate London Colney Herts AL2 1HG enquiries vokera co uk www vokera co uk www vokera ie Sales General Enquires T 0844 391 099 F 0844 391 0998 Vokera Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vokera Limited reserve the right to change specification without prior notice Consumers statutory rights are not affected A Riello Group Company Company Reg No 1047779 Cod 20001637 Ed 1
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