Ariston 28 MFFI Boiler User Manual
Contents
1. Digital Display Fault Code Water Temperature J Time Clock K Central Heating System Pressure Gauge CAUTION Installation start up adjustments and maintenance must be performed by a competent person only in accordance with the current Gas Safety Installation amp Use Regulations and the instructions provided Improper installation may cause damage or injury to individuals animals and personal property for which the manufacturer will not be held liable To ensure efficient and safe operation it is recommended that the boiler is serviced annually by a competent person If it is known or suspected that a fault exists on the appliance it must not be used until the fault has been corrected by a competent person HELPFUL SUGGESTIONS To get the most out of your boiler we have provided you with some useful advice on proper use and maintenance Periodically check the system pressure using the pressure gauge K make sure that the pressure is between 1 0 and 1 5 bar the blue part on the gauge when the system is off and cool The display will indicate E 02 if the pressure is below the minimum recommended value Consult your installer for checking and refilling the system The outer panels of the unit s case must only be cleaned with a damp cloth Do not use abrasive cleaners The control panel can be wiped with either a damp or dry cloth Spray polishes must not be used on the control panel surface or knobs Care must be t2. End User Manual mi GENUS HE microGENUS HE 24 MFFI microGENUS HE 28 MFFI microGENUS HE 32 MFFI Q29 a The code of practice for the installation commissioning amp servicing of central heating systems Country of destination GB Dear Customer Thank you for choosing an ARISTON boiler We guarantee that your boiler is a reliable and technically sound product This manual provides detailed instructions and recommendations for proper installation use and maintenance Remember to keep this manual in a safe place for future reference i e by the gas meter Your local MTS Servicing Centre is at your complete disposal for all requirements MTS GROUP The guarantee on this appliance is valid for 24 months from the first day of installation Repairs to the electric hydraulic or gas circuits may be carried out only by your local authorised MTS Servicing Centre Every attempt has been made to avoid errors of any kind in this manual the Management invites customers to inform of any inaccuracies which they may find This will help to improve our service TABLE OF CONTENTS 1 GENERAL INFORMATION page 3 Technical Information page 3 Control Panel page 4 2 OPERATING INSTRUCTIONS page 4 3 USEFUL INFORMATION AND TROUBLESHOOTING page 6 4 MAINTENANCE page 7 5 CHANGE OF GAS TYPE page 7 6 Time CLOCK page 7 MPORTANT Please read this manual carefully For additional information please consult the Instal
3. aken in preventing any liquid entering the appliance PRACTICAL TIPS If the water is very hard it is recommended that a water softener be added to the system so as to reduce the formation of limescale in the boiler exchangers This will ensure that the efficiency of the unit remains the same over time reducing gas olal consumption and maintenance costs If the boiler should be out of use for a prolonged period it is recommended that the electrical power supply be disconnected and that the external gas cock be closed If low temperatures are expected the boiler and system pipe work should be drained in order to prevent frost damage To improve comfort and take full advantage of the heat produced by the boiler it is recommended that an external room thermostat be installed It is good practice to clean and service the appliance and central heating system every year Call an Authorised Service Centre lot PLOO4D IGNITION PROCEDURE Turn the selector knob A to the position The display will A indicate on indicating that the boiler is ready to operate The O electronic control unit will ignite the burner without any manual intervention but in response to the request for Domestic Hot Water or heating If after approximately 10 seconds the burner has not ignited the boiler safety devices will shut off the gas and the display will indicate the fault code AGO 1 To reset the ignition system the reset b
4. d under the boiler and turn the electricity supply switch located outside the boiler to the OFF position BOILER SHUTDOWN SITUATIONS The boiler is equipped with safety devices that intervene in certain situations and shut it off Most of these situations are signalled by means of the L E D s and in some circumstances the user may be able to remedy them SHUTDOWN DUE TO IGNITION FAILURE This anomaly is indicated by A G7 on the display To reset the boiler press and then release the D button At this point the electronic ignition system will attempt to light the burner again Should the boiler fail to ignite a second time check that the external gas cock is open If the problem persists contact an Authorised Service Centre SHUTDOWN DUE TO OVERHEATING This anomaly is indicated by A 0 3 on the display The boiler has shutdown because the safety thermostat detected that the boiler temperature has exceeded the maximum limit To reset this state wait until the boiler has cooled and press the button D If the safety thermostat operates on a frequent basis contact one of our Authorised Service Centres SHUTDOWN DUE TO INSUFFICIENT WATER CIRCULATION This anomaly is indicated by E 02 on the display One of the possible causes of this shutdown situation could be the lack of water in the boiler or water circulation failure in the primary heating circuit Check the system pressure on the pressure gauge K and i
5. er and to allow the regulation of the external temperature to function efficiently SETTING THE HOT WATER FOR DOMESTIC USE Both in the winter and summer mode the temperature of the Domestic Hot Water may be adjusted by using the B knob A delivery temperature for the water may be chosen ina range from 36 C to about 56 C depending on the flow rate of the water and the position of the knob between the min and max settings The water temperature in the primary circuit may be checked on the display PLOO4D 3 USEFUL INFORMATION AND TROUBLESHOOTING ECONOMY COMFORT MODE The selector knob E allows the user to choose the economy mode position E or the comfort mode position C The economy mode is the normal state for the operation of the boiler since the domestic water is heated up only when a tap is turned on The comfort mode is a special operating state because the water contained in the secondary exchanger and in the primary exchanger is kept in a pre heated condition thereby allowing a quicker delivery of Domestic Hot Water when required TURNING OFF THE CENTRAL HEATING To turn off the Central Heating rotate the C knob to the 0 position The boiler will stay in summer mode providing Domestic Hot Water on request TURNING OFF THE BOILER To turn the boiler off rotate the selector knob A to the 0 position OFF the display will go off Close the gas cock locate
6. f it is less than 0 5 bar try bringing the system pressure up to a mean value of 1 0 bar by opening the water inlet valve Then reset by K turning the boiler off and then back on by pressing the button D 4 MAINTENANCE 5 CHANGE OF GAS TYPE Other Shutdown Situations Should a shutdown situation indicated on the display by the following letters and figures occur E04 E05 E06 E07 E08 E09 E20 E21 E33 E34 contact one of our Authorised Service Centres If instead the display shows one of the shutdown situations indicated by the following letters and figures A77 A78 A97 A98 A99 try resetting the boiler by pressing the reset button D If the boiler shuts off again contact one of our Authorised Service Centres ANTI FROST DEVICE The boiler is fitted with a device which in the event that the water temperature falls below 8 C the pump activates and runs until a temperature of 18 C is attained In the event that the water temperature falls below 3 C the diverter valve switches to Domestic Hot Water and the burner fires and runs on minimum power until a temperature of 33 C is attained This device is only activated when the boiler is operating perfectly and the system pressure is sufficient the boiler is powered electrically gas is being distributed Schedule an annual maintenance check up for the boiler with a CORGI registered Service Engineer Correct maintenance always results in savings in the c
7. lation and Servicing Instructions Make sure to keep the manuals provided with the appliance so that they can be used by the end user installer or our authorised engineer 1 GENERAL INFORMATION MTS GB Limited support the Gemma initiative Your installer will give you and show you how to use a Log Book which will give you important information about your boiler and heating system Please have this Log Book to hand whenever you contact a service engineer or us All CORGI Registered Installers carry a CORGI ID card and have a registration number Both should be recorded in your boiler Logbook You can check your installer is CORGI registered by calling CORGI direct on 01256 372300 This is a combined appliance for the production of Central Heating C H and Domestic Hot Water D H W This appliance must be used only for the purpose for which it is designed The manufacturer declines all liability for damage caused by improper or negligent use Do not allow children or inexperienced persons to use the appliance without supervision If you smell gas in the room do not turn light switches on or off use the telephone or any other object which might cause sparks Open doors and windows immediately to ventilate the room Shut the gas mains tap on the gas meter or the valve of the gas cylinder and call your Gas Supplier immediately If you are going away for a long period of time remember to shut the mains gas tap or the gas cyli
8. nder valve Before any intervention within the boiler it is first necessary to isolate the electrical supply by turning the external switch to OFF TECHNICAL INFORMATION GENERAL DATA Heating input max min nett Heating output max min nett Efficiency at Maximum Thermal Capacity see installation instructions CENTRAL HEATING Operating Temperature max min Maximum Minimum Heating Pressure Built in expansion vessel Total Capacity DOMESTIC HOT WATER Maximum Minimum Temperature of Water for Domestic Use Working pressure max min Flow rate AT 25 C Flow rate AT 35 C Minimum flow rate ELECTRICAL DATA Electrical Supply Frequency Power Consumption Protection of Electrical System CATEGORY Nominal Pressure Methane Gas G20 Nominal Pressure Liquid Gas G30 G31 24 kW 26 7 12 2 23 3 10 4 87 4 G bar litres 230 50 120 X4D 20 28 30 37 28 kW 331 1 13 3 27 11 4 86 7 230 50 148 X4D 20 28 30 37 230 50 148 X4D 20 28 30 37 Warning the flue analysis mode must only be selected by a qualified service engineer 2 OPERATING INSTRUCTIONS CONTROL PANEL LEGEND A On Off Button B Domestic Hot Water Temperature Adjustment C Central Heating Temperature Adjustment D Reset Button Flue Test analysis mode E Comfort Mode Selector F Summer Mode LED Green G Ignition Overheat Lockout LED Red H Central Heating Winter Mode LED Green
9. o circumstances should the minute hand be moved manually make sure all the switches i e the riders are placed on the inside of the clock border pull outward the riders for 7 00 am and 9 30 am and then all riders between these two repeat this for 7 00 pm and 10 00 pm Other heating intervals may be set in the same way The timer has approximately 150 hours of battery back up for power failure The clock is provided with a selector switch with three positions see figure l Position I CONSTANT in this position the clock circuit is always closed switch on therefore the boiler will constantly be on and will only shut off upon the request of the room thermostat if installed or the heating thermostat 2 Position O HEATING OFF in this position the clock circuit is always open switch off and the boiler will therefore never ignite for heating 3 Central Position PROGRAMMING ACTIVE in this position the programming set by the user is active Manufacturer Merloni TermoSanitari SpA Italy Commercial subsidiary MTS GB LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet http www ariston co uk E mail info uk mtsgroup com Customer Service 0870 600 9888 Technical Service Hot Line 01494 539579 O Tr pu m O O O
10. ost of running the system Our boilers are designed to function either with Natural Gas methane or L P G gas If you need to changeover from one gas to the other one of our Authorised Service Centres should be contacted 6 TIME CLOCK UL Lo Aw lm ZN Wy az i HU ii irinin uns X ii Ni OaS gt N ype eg S l Uy y Sj s 7 fit KS ASA Ti gt s gt 44 i N iI NS GRASSLIN Sn ay j k A ERY 1 W j n UT011Ap ffi TECHNICAL DATA Ambient temperature 10 C to 55 C Running reserve 150 h not for 1 5 V DC Shortest switching time 15 minutes Programmable Every 15 minutes ANOTE the time clock is for central heating control only The time clock is provided with 96 switches called riders each of which covers a time interval of 15 minutes four per hour When a rider is switched from the inside off setting to the outside of the clock border on setting the circuit is closed switch on for a period of 15 minutes and then the boiler starts if the room thermostat if installed or the heating thermostat require heat heating function on EXAMPLE To set the heating of your home in the time interval from 7 00 am to 9 30 am and from 7 00 pm to 10 00 pm every day rotate the outer ring of the clock in a clockwise direction until the correct time of day 24h lines up with the arrow on the clock at approx 2 o clock position under n
11. utton D must be pressed and released Should LV the boiler fail to ignite a second time check that the external gas cock is open If the problem persists contact an Authorised Service Centre PLOO4D PLOO6C summer WINTER AND SUMMER OPERATING MODES In the winter operating mode the boiler will produce both Central Heating and Domestic Hot Water In the summer operating mode the boiler will produce only Domestic Hot Water Using the knobs on the control panel the user can select winter or summer operating mode Keeping the knob C at the lt lt position selects the summer operating mode the simbol will illuminate Winter operating mode may be selected by positioning the knob C between the min and max settings The simbol Jff will illuminate winter ii 3200 ADJUSTING THE HEATING It is possible to set the temperature of the Central Heating system by adjusting the knob C By positioning the indicator somewhere between min and max a temperature may be obtained which varies from approximately 45 C to about 80 C The water temperature in the primary circuit may be checked on the display EXTERNAL ROOM THERMOSTAT CONTROL If an external room thermostat is installed it is recommended that the temperature of the Central Heating system be set by means of the C knob leaving it at max in order to obtain the best performance from the boil
Download Pdf Manuals
Related Search