Ariston EURO COMBI 47-116-10 Installation Manual

A/23 MFFI - A/27 MFFIG.C.N. 47-116-10 / 47-116-12Servicing InstructionsType C BoilersLEAVE THESE INSTRUCTIONSADJACENT TO THE GAS METER

10B029Setting the minimum and the maximum power of the boiler1. Check that the supply pressure to the gas valve is a minimum of 20 mbarfor natural gas

11B029model 23model 27Regulating the heating power fornatural gas (G20)model 23model 27Regulating the heating power forbutane gas (G30)model 23model 2

12B02910. Remove the pipe from the pressure gauge and connect screw “C” to thepressure outlet in order to seal off the gas.11. Carefully check the pre

13B029Removing the spark generator (SIT Tandem gasvalve)1.Disconnect ignition leads “Q1” by pulling upwards (see fig. 1.30);2.Remove the screws “R1”(s

14B0291.5Access to the Hydraulic CircuitsFig. 1.37UURemoving the D.H.W. (secondary)exchanger1.Remove the screw “U”(see fig. 1.37);2.Push the exchanger

15B029Removing the safety valve1.Loosen nut “V”(see fig. 1.38);2.Remove the valve.Removing the automatic air vent1.Unscrew valve “W”(see fig. 1.39).Re

16B029Removing the pump1.Unscrew “Z” and remove the electrical connection(see fig. 1.41);2.Release the nuts “A1” and remove the pump (see fig. 1.42).R

17B029Removing the expansion vessel1.Remove nut “A3” away from the expansion vessel (see fig. 1.45);2.Remove nut “A4”(see fig. 1.46);3.Remove expansio

18B029Checking fuse1.Remove the inspection panel(see fig. 1.6 - 1.7);2.Remove fuse (see fig. 1.50).1.6Access to the ControlSystemRemoving the time clo

19B029Removing the P.C.B.s1.Isolate electricity;2.Remove the front cover of the boiler;3.Remove the inspection panel (see fig. 1.6-1.7);5.Remove the m

2B029Page No.1. SERVICING INSTRUCTIONS1.1 Replacement of Parts 31.2 To Gain General Access- Removing the Front Panel 3- Removing the Side Panels 4- To

20B0292. FAULT FINDING1) There is sufficientwater in thesystem2) The gas is turned on3) Theelectricityto theboiler is onPreliminary ChecksMakesure tha

21B029DOES THECIRCULATION PUMPCOME ON?YESNONONOYESYESPOWER TOTHE PUMP?DOES THEINSUFFICIENTWATERINDICATORLIGHTCOMEON?(within40 sec.)1) Check for air in

22B029DOES THE FANCOME ON?BOILERSHUTDOWN?ISTHEREPOWERTO THE FAN?NOYESYESYESNOYESNONONO1)Check/replace differentialpressure switch for pump2)Check/repl

23B029DOES THEBURNERLIGHT?YESNOYESYESWASTHERESETSWITCHPRESSED?YESNONONONOYES1)Check/replaceigniterplugs2)Check wiring3) Check starter4)Check small wir

24B029ISTHERE STILL APROBLEM?FUNCTIONSNORMALLYNOYESLISTOFMALFUNCTIONSPOSSIBLE CAUSES123456789Deliveryofhot waterfordomesticuse:when thetapisturnedon,t

25B029SignallingBoiler OffAuto diagnostic stateSpark ignition stateBoiler functioning normallyLockoutBoiler thermostat satisfiedRoom thermostat/clock

26B0293. ELECTRICALDIAGRAMSLegend:AT = High Voltage P.C.B.BT = Low Voltage P.C.B.B = Flame Failure L.E.D.C = Insufficient Water Pressure L.E.D.D = Wat

27B029EX C-MI/FFI8A/23 MFFI - A/27 MFFI

28B02990565568 60 5721191236781213111617 18 19 2320 21 22 24 2625888786868987858498851112078163821241221181191121114444901567 59 58611251231071098266

29B029573294573520997206573224569236573340573528573727573172571649997208953730952981952610572989572990573343573314571651571652570717564254569387571449

3B0291. SERVICING INSTRUCTIONSThe life of individual components vary and they will need servicing orreplacing as and when faults develop.The fault fin

30B029573294573520997206573224569236573340573528573727573172571649997207953730952981952610572989572990573343573314571651571652570717564254569387571449

31B029573294573520997206573224569236573340573528573727573172571649997207953730952981952610572989572990573343573314571651571652570717564254569387571449

Manufacturer: Merloni TermoSanitari SpA - ItalyCommercial subsidiary: MTS (GB) LIMITEDMTS BuildingHughenden Avenue,High WycombeBucks HP13 5FTTelephone

4B029Removing the side panels1.Remove the screws “B”;2.Pull the panel away from the boiler, then lift the panelup and away from the boiler (see fig. 1

1.Remove the side panels of sealed chamber (fig. 1.10);2.Remove the screws “F” of the burner (see fig. 1.11);3.Remove the burner (see fig. 1.12);4.Rem

6B029Removing the electrodes 1.Remove rubber gasket “G”(see fig. 1.13);2.Disconnect ignition leads by pulling downward (see fig. 1.14);3.To remove the

1.Disconnect the electrical connections “K” and silicone pipes “L” from theirconnection points (see fig. 1.20);2.Remove screws “J” on the top of the s

8B0291.Disconnect the silicone pipes “M” and remove the screw “N”(see fig. 1.22);2.Extract the venturi (see fig. 1.23).Removing the venturi device1.Di

9B0291.4Servicing and Removal of the Gas Valve1234ABCEFDSITTANDEMSITSIGMA1234ABCEFD