Ariston microGENUS HE 32 MFFI Informations techniques

microGENUS II 24 MFFImicroGENUS II 28 MFFImicroGENUS II 31 MFFIInstallation and ServicingInstructionsType C BoilersG.C.N: 47-116-25 (24kW)G.C.N: 47-11

10NOTE:THE FLUE MUST NOT TERMINATE IN A PLACE LIKELY TOCAUSE NUISANCE2.9 FLUE CONNECTIONSFLUE SYSTEMThe provision for satisfactory flue termination mu

11Ø 60/100 mmFIG. 2.7FU002A/Rev.1FITTINGTHECOAXIALFLUE (HORIZONTAL)(For Telscopic, Vertical Flue and Twin Pipe Instructionssee page 12)CONTENTS:1X SIL

12FIG 2.12e.g. X = 508mm + 22mm = 530mm 860 - 530 = 330mm (Length to be cut from the plainend of the flue).Once cut to the required length, ensure tha

13NOTE:MAX LENGTH = a+a+a +b+b = a+a+a+0.5+0.5COMBINED LENGTH NOTTO EXCEED 5mFIG 2.13FIG 2.14The Vertical flue kits maximum and minimum useablelengths

14Considerations necessary for twin flue installation;It is most important to avoid any possible condenseformation entering the appliance.According to

15FIG 2.18IMPORTANT!!!WHERE CONDENSE WILL FORM WITHIN THE FLUE SYSTEM,ENSURE THERE IS A FALL BACK TO THE BOILER OF 3OAND ASUITABLE TRAP IS FITTED AS C

16EXHAUSTAIR INTAKEAIR INTAKEAIR INTAKE MUST NOT BEFITTED ABOVE THE EXHAUSTFIG 2.21NOTE: DRAWINGS ARE INDICATIVE OF FLUEING OPTIONS ONLY.FIG. 2.20TYPE

17TABLE 2.1ExhaustTypeTYPE 4TYPE 5Use the ø 42 mmRestrictorBetween1m - 4 mBetween1m - 11.5 mMaximumFlueLength47 m42 mRisk of Condensation Forming With

18123456123456ECIIIJKLEGEND:A -On/Off ButtonB - Domestic Hot Water Temperature AdjustmentC - Central Heating Temperature AdjustmentD - Reset Button/Fl

19In order to access the inside of the boiler, it is necessaryto unscrew the fastening screws “A” of the control panellocated on the lower part of the

2TABLE OF CONTENTS1. GENERAL INFORMATION PAGE.31.1 GENERAL INSTRUCTIONS PAGE.31.2 OVERALL VIEW PAGE.42. INSTALLATION PAGE.42.1REFERENCE STANDARDS PAGE

202.14 ELECTRICAL/SYSTEM DIAGRAMSB - Summer/Winter Switch - Central Heating TemperatureRegulationC - Connector for Remote Control (Climate Manager)D -

211234567891011AB C D E12 13 14 15 16171820192122LEGEND:1. Fan2. Heat Exchanger3.Overheat Thermostat 4.Central Heating Flow NTC5. Burner 6.Detection E

22MTS (GB) Limited support the initiative. Withinthe information pack you will find a copy of thelogbook.It is important that this is co

233.2 INITIAL START-UPTo access the areas in which adjustments are made, it isnecessary to open the control panel, as indicated inSECTION 2.12, then r

243.6 BOILER SAFETY SYSTEMSIn the boiler, it is possible to monitor the correct operationof the flue exhaust/air intake, checking for a loss ofgeneral

25ANTI-FROST DEVICE:The boiler is fitted with a device which, in the event that thewater temperature falls below 3˚C, the burner ignites atthe minimum

261. Hand over the copy of the End User Instructions suppliedwith the appliance, together with these instructions, andexplain how to use the timeclock

274. GAS ADJUSTMENTSCATEGORY II2H3+Methane GasG20Liquid Butane GasG30Liquid Propane GasG31Lower Wobbe Index (15°C;1013mbar) MJ/m3hNominal Delivery Pre

284.2 ADJUSTING THE GAS PRESSURESSetting the minimum and the maximum power of theboiler1.Check that the supply pressure and dynamic workingpressure to

1 2 4 5 63ONABCN203 CN206CN201CN200Soft-lightAdjustmentMax HeatingPower29Setting the maximum heating circuit power7. To set the maximum heating cir

3This manual is an integral and essential part of theproduct.It should be kept with the appliance so that it canbe consulted by the user and our autho

30NOTE: THIS TABLE CAN BE USED IN CONJUNCTION WITH THE GRAPH ON PAGE31.NATURAL GAS (G20)kW 13 15 17 19 21 23 25 27 29 31mbar 2.5 3 3.5 4.5 5.5 6.5 7.5

FIG. 4.1Regulating the heating power fornatural gas (G20)Regulating the heating power forbutane gas (G30)Regulating the heating power forpropane gas (

It is recommended that the following inspections becarried out on the boiler at least once a year:1 - Check the seals for the water connections; repla

2. The control rotates on two lateral hinges; the panel stays in ahorizontal position, which allows access to the inner parts ofthe boiler (FIG. 6.2);

6.2.2 Removing the sealed chamber front cover1. Remove the screws “C” (FIG.6.5);2. Lift the sealed chamber front cover from the locating pins(FIG. 6.

6.3.3 Removing the electrodesBefore carrying out this procedure, unscrew and slide theburner forward (see previous section).1. Remove rubber gasket “

To replace, repeat the steps in reverse order, payingparticular attention to the following:a -Centre the electrode in the positioning hole carefully,o

1. Disconnect the electrical connections “M” and siliconepipes “N” from their connection points (FIG. 6.21);2. Remove screws “O” on the top of the sea

1. Disconnect electrical connections “P” and silicone pipe“Q” (FIG.6.24);2. Remove screw “R” and remove the fan collar clamp “R”(FIG.6.25);3. Remove s

Important! Before any component is removed, the boilermust be drained of all water.6.5.1 Removing the D.H.W. (secondary) exchanger1.Remove the screws

4262524232221201918171615141312111098765432127LEGEND:1.Flue Manifold2. Air Intake for Twin Pipe Flue Systems3. Fan4. Combustion Chamber Hood5.Main Hea

FIG. 6.38ZFIG. 6.39FIG. 6.40FIG. 6.376.5.2 Removing the pump pressure switch1.Remove the pump pressure switch electrical connections“Z”(FIG 6.38);2.U

6.5.4 Removing the automatic air vent1. Remove the U-clip “B1” (FIG.6.44);2. Remove valve complete with float using a screwdriver(FIG 6.45-FIG 6.46).

6.5.5 Removing the pump1. Remove the electrical connection “ C1” (FIG. 6.47);2. Release the nut “D1” (FIG.6.48);3. Remove the retaining clip “E1” fro

6.5.7 Removing the expansion vessel1. Release nut “J1” (FIG. 6.56);2. Remove back-nut “K1” (FIG.6.57);3. Remove the expansion vessel (FIG. 6.58).6.5.

6.5.8 Removing the overheat thermostat1. Disconnect the overheat thermostat electricalconnections “L1” (FIG.6.59);2. Then remove the thermostat from

FIG. 6.66FIG. 6.67FIG.6.68O16.5.12 Removing the D.H.W. flow switch1. Unplug the electrical connector “O1” (FIG. 6.66);2. Remove the D.H.W. flow switch

6.6 ACCESS TO THE CONTROL SYSTEM6.6.1 Checking the fuses1. Remove the inspection cover on the reverse of thecontrol panel and unscrew the screws “P1

6.6.2 Removing the P.C.B.1. Isolate electricity;2. Remove the inspection cover from the reverse of thecontrol panel, unscrew the screws “Q1” (FIG. 6.

6.6.3 Removing the time clock1. Disconnect the electrical connections “U1” from theclock (FIG.6.78);2. Remove screws “V1” (FIG. 6.78);3. Lift the tim

7. FAULT FINDINGThese fault finding guides are not exhaustive. However, itis possible to detect and correct many defects by usingthe standard fault fi

52.1 REFERENCE STANDARDS2. INSTALLATIONThe technical information and instructions providedherein below are intended for the installer / ServicingTechn

YESYESYESYESNONOIS THEPUMP RUNNING?1. Check if there is air in the system2. Check the main circuit flow switch operation3. Check the pressure o

1. Check the fan cable2. Replace the fan3. Replace the main P.C.B.1. Check/replace ignition electrode2. Check ignition cable3. Check/replace the ma

8. EXPLODED VIEW2341576171510410110310210911211111035515250494811411511347301 302 30330430530515891091073747272752219 20181423211325 28 30 30 31261211

998616998077997147573520651005475693909959039984586510142765101257651014266510141799959965100695651007169984845735216101113661010017990686996065997077

9. TECHNICAL INFORMATIONNameCE CertificationFlue TypeHeat Input max/min kWHeat Output max/min kWEfficiency of Nominal Heat Input %Efficiency at

NameCE CertificationFlue TypeHeat Input max/min kWHeat Output max/min kWEfficiency of Nominal Heat Input%Efficiency at 30% of Nominal Heat Input

BENCHMARK COMMISSIONING CHECKLIST

SERVICE INTERVAL RECORD

0 99 84 1854 211 Edition 2 04/04Commercial subsidiaries: MTS (GB) LimitedMTS Heating LimitedMTS BuildingDamastown Industrial ParkHughenden Avenue Da

6After removing the boiler from its packaging, remove thetemplate from the separate box containing the connectionkit.NOTE:Pay particular attention to

7For safety purposes, have a competent person carefullycheck the electrical system in the property, as themanufacturer will not be held liable for dam

8VIEW OF THE BOILER CONNECTIONSLEGEND:A = Central Heating FlowB = Domestic Hot Water OutletC = Gas InletD = Domestic Cold Water InletE = Central Heati

9The discharge should terminate facing downward on theexterior of the building in a position where discharging(possibly boiling water & steam) wil