Ariston ecoGENUS 24 MFFI Servicing Instructions Download Page 32

Page: 32 / 32

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.mtsgb.ltd.uk

E-mail: [email protected]

Technical Service Hot Line: (01494) 539579

Summary of Contents for ecoGENUS 24 MFFI

Page 1: ...Servicing Instructions Type C Boilers G C N 41 116 03 47 116 17 LEAVE THESE INSTRUCTIONS WITH THE END USER Condensing Country of destination GB...

Page 2: ...s valve 1 5 ACCESS TO THE WATER CIRCUIT Removing the D H W secondary exchanger Removing the safety valve Removing the automatic air vent Removing the main circuit flow switch Removing the diverter val...

Page 3: ...and dismantle the front part of the casing proceed as follows 1 Unscrew screws A 1 4 turn only FIG 1 1 FIG 1 2 and rotate the control panel forward 2 Unscrew the screws B FIG 1 3 and unhook the front...

Page 4: ...panel away from the boiler then lift the panel up and away from the boiler 1 3 ACCESS TO THE COMBUSTION CHAMBER D FIG 1 5 D FIG 1 4 C C C C D D Removing the sealed chamber front cover 1 Remove the sc...

Page 5: ...n 1 Loosen nut E FIG 1 7 2 Pull off the hose F and disconnect the electrical connector G FIG 1 8 3 Remove the nuts H FIG 1 9 4 Pull the fan away from the exchanger FIG 1 10 FIG 1 10 E FIG 1 9 FIG 1 7...

Page 6: ...J I J Removing the electrodes 1 Pull off the ignition cable I FIG 1 12 2 Remove the two allen bolts J FIG 1 13 3 Extract the electodes FIG 1 14 FIG 1 12 FIG 1 11 FIG 1 14 Removing the combustion chamb...

Page 7: ...ollector FIG 1 17 2 Remove the nuts M from each side of rear of the collector FIG 1 18 3 Release the condesate trap union N FIG 1 19 4 Separate the collector from the combustion chamber FIG 1 20 5 Rem...

Page 8: ...Removing the injector See the section on removing the fan before carring out this procedure 1 Disconnect all connections from the fan and remove FIG 124 2 Remove the four screws P FIG 125 3 Unscrew t...

Page 9: ...9 FIG 1 26 FIG 1 27 Q...

Page 10: ...ng the gas valve 1 Disconnect the electrical connection R from the gas valve FIG 128 2 Release the top nut S FIG 1 29 3 Remove the screws T from the bottom of the gas valve pipe FIG 1 30 4 Remove the...

Page 11: ...screw U FIG 1 32 2 Remove the screw V FIG 1 33 3 Push the exchanger towards the rear of the boiler lift upwards and remove from the front of the boiler FIG 1 34 4 Before replacing the exchanger ensure...

Page 12: ...ove the main circuit flow switch FIG 1 37 FIG 1 38 FIG 1 40 X Y B1 Z A1 FIG 1 41 Removing the diverter valve actuator 1 Unplug the electrical connector Z FIG 1 41 2 Release the retaining clip A1 and r...

Page 13: ...13 Removing the pump 1 Unplug the electrical connection C1 FIG 1 44 2 Release the nut D1 FIG 1 45 3 Release the nut E1 FIG 1 46 4 Remove the pump FIG 1 47 E1 D1 C1 FIG 1 44 FIG 1 47 FIG 1 46 FIG 1 45...

Page 14: ...1 51 2 Loosen nut I1 and remove backnut J1 FIG 1 52 3 Remove the expansion vessel FIG 1 53 Removing the pressure gauge 1 Release coupling F1 FIG 1 48 2 Ease the pressure gauge G1 through the control...

Page 15: ...55 M1 FIG 1 56 Removing the C H flow temperature probe N T C 1 Remove the electrical connector M1 by pulling off Fig 1 56 2 Unscrew and remove the C H flow temperature probe N1 FIG 1 57 O1 P1 FIG 1 5...

Page 16: ...CCESS TO THE CONTROL SYSTEM Removing the time clock 1 Remove the inspection cover on the reverse of the control panel FIG 1 60 2 Lower the time clock door FIG 1 62 3 Unplug the electrical connection R...

Page 17: ...e T1 FIG 1 68 6 Unplug the electrical connectors U1 from the main P C B Fig 1 69 7 Remove the main P C B mounting screws V1 four in total FIG 1 70 8 Remove the main P C B FIG 1 71 9 Remove the display...

Page 18: ...18 W1 FIG 1 72 FIG 1 73 W1 W1 W1...

Page 19: ...n Flow temperature 50 C Flow temperature 40 C Flow temperature 50 C NO COMFORT OFF NO COMFORT OFF YES NO YES NO NO YES NO YES YES YES D H W IS BEING DRAWN D H W IS BEING DRAWN YES NO MUST THE TIME CLO...

Page 20: ...east 5 C below the one selected The C H flow temperature is lower than 80 C and the temperature of the cylinder is at least 5 C below the one selected ON green L E D on cylinder excluded ON green L E...

Page 21: ...ration 3 Check the pressure on the water gauge and fill system to 1 bar 1 Check pump cable 2 Check replace main P C B Release replace pump Push the RESET button POWER TO THE PUMP YES YES IS THE MAIN C...

Page 22: ...SPARKS ARE GENERATED REGULARLY YES NO NO YES YES NO 1 Check the power supply of the gas valve 2 Check for an air pressure signal 3 Check the gas pressure on the burner 4 Check the soft light adjustme...

Page 23: ...Flame detected with gas valve closed Error in the electrical connection live and neutral crossed Problem with the 50Hz power supply Flame detection electrode short circuited Heating return temperature...

Page 24: ...f the secondary output clasp connected to C7 positions 1 9 relates to a secondary pump optional If the contact remains open the output signal controls a zone valve optional JUMPER 6 not used JUMPER 7...

Page 25: ...hermostat grey 4 Heating flow sensor grey 5 Heating return sensor grey 6 Domestic hot water sensor grey 7 Not used jumper 8 Outdoor sensor grey 9 Domestic hot water flow switch grey 10 Main circuit fl...

Page 26: ...26 ecoGENUS 24 MFFI ecoGENUS 24 RFFI...

Page 27: ...100 28 45 37 37 102 11 10 9 7 8 7 81 81 80 17 15 23 25 24 22 16 18 78 79 20 84 83 16 17 86 84 85 19 21 14 8 13 12 77 66 57 65 58 64 57 107 108 106 105 104 103 94 96 93 91 90 76 3 3 6 8 7 92 58 60 61...

Page 28: ...Gasket 3 4 Temperature probe C H W Motor 3 way valve Fixing clip motor Flow group Gas valve Micro switch set main flow D H W Return group Manual vent cock Safety valve 1 2 3 bar Gasket 1 2 Time clock...

Page 29: ...2 31 29 96 97 37 34 98 29 46 38 38 100 25 26 21 24 21 21 22 80 79 80 83 82 8 16 15 67 58 66 59 65 58 105 106 104 103 102 101 92 94 89 88 86 76 3 3 6 8 87 59 61 62 69 7 74 72 64 75 68 71 73 70 3 3 3 3...

Page 30: ...379 079 E24 077 Expansion vessel Gasket 3 4 Temperature probe C H W Motor 3 Way valve Fixing clip motor Flow group Gas valve Gasket 1 2 Return group Manual vent cock Safety valve 1 2 3 bar Time clock...

Page 31: ...31...

Page 32: ...Italy Commercial subsidiary MTS GB LIMITED MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT Telephone 01494 755600 Fax 01494 459775 Internet http www mtsgb ltd uk E mail info mtsgb ltd uk Te...

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