Ariston ACO 27 MFFI Información técnica

Country of destination: GB/IEInstallation andServicingInstructionsType C BoilersG.C.N: 47-116-34G.C.N: 47-116-35G.C.N: 47-116-09G.C.N: 47-116-10LEAVE

102.8. WATER CONNECTIONSLegend:A = Central Heating FlowB = Domestic Hot Water OutletC = Gas InletD = Domestic Cold Water InletE = Central Heating Retu

11ii) Connecting into the waste system of the building such asa washing machine or sink trap. The connection must beupstream of the washing machine/si

12WATERTREATMENTThe boiler is equipped with an aluminium alloy main heatexchanger.The detailed recommendations for water treatment are given inBS 7593

13CoaxialSystemsTwin PipeSystemsExhaust TypeC13C13, C33, C43C53,C83Maximum ExtensionExhaust/Air(m)420 (S1=S2)1+39 (S1+S2)Diameter of Pipes(mm)Ø 60/100

14FIG. 2.8In FIG. 2.8 (PAG E 11), several different types of flue systems areshown.For additional information regarding the flue accessories, pleaseco

152.10. ACCESSORY CONNECTIONIMPORTANT!!Before carrying out any repairs to the appliance alwaysensure that the external power supply has been isolated.

162.11. ELECTRICAL DIAGRAMThe P.C.B. is fitted with 2 fuses, on the live and theneutral.The fuse holder contains:- 5 x 20mm “3.15A Slow” glass fusesPr

17Legend:A-ON/OFF buttonB-Multifunction displayC-RESET buttonD-Green led (indicates burner on)E-Comfort function yellow LEDF-Red LED (indicates lockou

182.12. WATER CIRCUIT DIAGRAMAB C DE2356789101112131415161718194120LEGEND:1- Fan2-Burner3-Ignition/detection electrode4 - Air release valve5 - Main h

19C23567891017161819204121ABDE1511121314LEGEND:1- Fan2-Burner3-Ignition/detection electrode4 - Air release valve5 - Main heat exchanger6- Central hea

2TABLE OF CONTENTS1. GENERAL INFORMATION1.1. GENERAL INFORMATION1.2. TECHNICAL INFORMATION1.3. OVERALL VIEW2. INSTALLATION2.1. REFERENCE STANDARDS2.2.

203. COMMISSIONING3.1. INITIAL PREPARATIONMTS (GB) Limited support the initiative. Within theinformation pack you will find a copy of th

21the system the treatment of the water to prevent prematurescaling of the main heat exchanger is necessary.The formation of scale strongly compromise

223.2. REMOVING THE CASINGTo remove the front casing panel, follow these steps:1. Remove the screws “A” (FIG 3.1);2. Remove the four screws from case

233.3. CONTROL PANELFIG. 3.4ADEFGHICB** IMPORTANT!!The Flue Test function will cause the boiler to run continuously onmaximum power. This function mus

24FIG. 3.4ADFGHICB** IMPORTANT!!The Flue Test function will cause the boiler to run continuously onmaximum power.This function must only be activated

253.4. INITIAL START-UP1. Make sure that:- the cap of the automatic air release valve is loosened;- the system pressure is at least 1 bar on thepressu

263.5. DISPLAY:MESSAGES SHOWN DURINGNORMAL OPERATIONDuring operation of the boiler, while it is carrying out its normaloperations, the left-hand displ

273.6. OPERATING PARAMETERSThe boiler has been designed to allow easy intervention with regardto the operating parameters.3.6.1 REGULATION MENU TABLES

28Important!!The parameters P5, P6 and P9 are only enabled whenthe outdoor sensor is connected.To return to the normal display, press the menu button

29FIG. 3.11FIG. 3.12Soft light adjustment11The soft light can be adjusted between the maximum power(shown on the display as “00”, i.e. 100%) and the

3This manual is an integral and essential part of the product. Itshould be kept with the appliance so that it can be consulted bythe user and our auth

30Pump Speed AdjustmentPPBy pressing the and keys it is possible to adust theoperation of the pump, the two options are as follows:UU00- Si

31Adapting the heat curve “PP 66”(Only enabled when an outdoor sensor is installed)To adapt the heat curve to the system requirements, setparameter “P

32Test Function ttThe P.C.B. allows the boiler to be forced to the maximum orminimum power. Enable the test function and OO will appear onthe right

33The boiler is designed to monitor some operating variables andsettings by means of the display on the front control panel. Keeping,at the same time,

34SUPPLY PRESSUREG20 methane 17-25 mbar1 32424313.6.3 GAS REGULATION CHECKSupply pressure check1. Loosen screw “1” (Fig. 3.31) and conect the pres

35The soft light can be adjusted between the maximum power(shown on the display as "00", i.e. 100%) and minimum power(shown on the display a

36NOTE: When there is no ignition, check that the gas cock is open.3.8. BOILER SAFETY SYSTEMSThe boiler is protected from malfunctioning by means of i

37The draining of the heating system must be carried out asfollows:- Turn off the boiler and the bipolar switch;- Loosen the automatic air release v

384. ZONE VALVESCR = remote controlVZ1,2 = zone valve 1 and 2TA = room thermostat or timer-thermostat= radiatorsF,N = electrical connection (live an

395. MAINTENANCE5.1. GENERAL REMARKSIt is recommended that the following inspections be carried outon the boiler at least once a year:1. Check the sea

4NameCE CertificationFlue TypeHeat Input max/min (Central Heating) kWHeat Input max (Domestic Hot Water) kWHeat Output max/min kWEfficiency of No

55TABLEI and IIYESYESYESYESYESYESNONONONOIS THE DISPLAY ON?DOES AN ERROR CODE APPEAR ON THE DISPLAY?1. Check the fuses2. Check the power supply to

56TABLEI and IIYESYESYESYESYESYESNONONONOIS THE DISPLAY ON?DOES AN ERROR CODE APPEAR ON THE DISPLAY?1. Check the fuses2. Check the power supply to

57YESYESYESYESNONONONOYESYESIS THEPUMP RUNNING?WAS THEPLAUSIBILITY TESTOK? (E95: test failed)1. Check the pump cable2. Check/replace the pump3. Check/

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

598. SHORT SPARE PART LIST49151617646313731872685474883843427 302925193736 38 41 4239354344454682104981039710298100993610197961177767874RESETCONFORTON

60Keyno.G.C. partno.DescriptionARISTONPart. No.1 Flue restrictor 6510219710 Spark generator 6510217714 Main P.C.B. 6510223618 Secondary heat exchanger

61471617186261123288323814546798024 272622 36 39 4037414243443490331175747673RESETON/OFF667748454684858659 58192021822587889631 3870686771786914137611

62Keyno.G.C. partno.DescriptionARISTONPart. No.1 Flue restrictor 6510219610 Spark generator 6510217714 Main P.C.B. 6510223642 Manifold (CH Return) 651

63

Manufacturer: Merloni TermoSanitari SpA - ItalyCommercial subsidiaries: MTS (GB) LIMITED MTS Heating LimitedMTS Building Damastown Industrial ParkHugh

5NameCE CertificationFlue TypeHeat Input max/min (Central Heating) kWHeat Input max (Domestic Hot Water) kWHeat Output max/min kWEfficiency of No

6LEGEND:1. Flue connector2. Mixer3.Fan4. Spark generator5. Burner6.Ignition and detection electrode7. Air release valve8.Main heat exchanger (aluminiu

7The technical information and instructions provided herein beloware intended for the installer / Servicing Technician so that theunit may be installe

82.3. OVERALL DIMENSIONSIn order to allow access to the interior of the boiler for maintenancepurposes, the boiler must be installed in compliance wit

9Fasten the boiler in place using the template and anchorssupplied with the unit. It is highly recommended that a spirit levelbe used to position the