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Biasi GARDA HE M96.24SM/B2, Руководство по обслуживанию

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Wall hung, fan flue, room sealed, high efficiency gas boiler

Service manual

GARDA HE

Models:

G.C. Appl. No.

M96.24SM/B2

47---583---03A

M96.28SM/B2

47---583---04A

GARDA HE SILVER

Models:

G.C. Appl. No.

M96.24SM/D2

47---583---03B

M96.28SM/D2

47---583---04B

Leave this manual adjacent to the gas meter

Содержание GARDA HE M96.24SM/B2

Страница 1: ...efficiency gas boiler Service manual GARDA HE Models G C Appl No M96 24SM B2 47 583 03A M96 28SM B2 47 583 04A GARDA HE SILVER Models G C Appl No M96 24SM D2 47 583 03B M96 28SM D2 47 583 04B Leave th...

Страница 2: ...e 21 10 11 Thermal control in the mode 21 10 12 Ignition and control sequence 22 11 Modulating gas valve 23 11 1 Function 23 11 2 Nomenclature of the parts 23 11 3 Adjustment 23 11 4 Checks 24 11 5 Re...

Страница 3: ...lease Pump D h w temp probe D h w heat exchanger Expansion vessel Detection electrode valve Condensing Diverter valve Air pressure switch Main circuit Flue thermostat heat exchanger Condensate trap fl...

Страница 4: ...A Fig 2 lift the panel and remove it A Fig 2 To remove the side panels loosen the screws B and C Fig 3 bring the base of the panels away from the boiler and lift them freeing them from the top hooks B...

Страница 5: ...mber For this purpose remove the front and side panels of the case remove the screws G as indicated in Fig 6 and remove the lid 2 5 Emptying the primary circuit 1 Close the c h circuit flow and return...

Страница 6: ...essure switch D h w flow switch C h temperature probe NTC Modulating gas valve Safety thermostat Flue temperature D h w temperature probe NTC 1 4 bn brown bu blue bk black wh white rd red gy grey gn g...

Страница 7: ...L Transformer ACTIVE CIRCUIT INACTIVE CIRCUIT L LINE N NEUTRAL N Electronic control p c b low voltage section J1 2 J3 3 J3 5 J3 4 J3 2 J3 1 J2 4 J2 5 Three way diverter valve Pump Full sequence igniti...

Страница 8: ...5 SB1 X5 K2 X3 X2 X4 Electrical voltages with burner on during c h or d h w operation only during c h operation only during d h w operation Supply network 230 230 0 230 230 0 Pump 3 way 230 Modulating...

Страница 9: ...ressing the reset push button the boiler turns on and operates cor rectly J J 6 J J J By pressing the reset push button the boiler starts the ignition cycle The burner doesn t light on the igni tion s...

Страница 10: ...g operation on c h J J J J Water leaks from the safety valve when the boiler is off J J J Note Useful information can be obtained also from the optical indication given by the appliance oper ation lig...

Страница 11: ...it from the wiring E M C B F C D G I J N K L H Fig 11 7 Loosen the connection K and move the pipe L downwards freeing it from the connection of the primary het exchanger 8 Remove the clip M 9 Move th...

Страница 12: ...NTC F see section 20 3 5 Completely loosen the connection G and slightly move the pipe H upwards 6 Remove the clip I and move the pipe J down wards freeing it from the connection then turn it towards...

Страница 13: ...re removing any covering or component 1 Remove the front and right hand side panels of the case 2 Empty the primary circuit and the d h w circuit of the boiler 3 Completely unscrew the two Allen key s...

Страница 14: ...turn the rotor in the direc tion of the arrow If there is a defect in starting the rotor will begin to turn normally only starting it manually n Check that the impeller is integral with the rotor With...

Страница 15: ...B brass spindle when the boiler operates in c h mode In both figures the relationship between the position of the actuator and the resistance of the motor windings the motor must be disconnected from...

Страница 16: ...t both c h and d h w temperature probe respectively H and I 6 Unscrew the connector J the c h flow connector and the d h w outlet connector F G J H I Fig 25 7 Remove the d h w heat exchanger see secti...

Страница 17: ...e flame during the entire period in which it is activated supplies the fan and checks its functioning by means of the signal coming from the air pressure switch The Electronic control ignition p c b h...

Страница 18: ...user setting the desired temperature with the con trol panel knobs operates the variable elements 8 and 9 in Fig 29 of the electronic control p c b If the power requested is lower than 40 of the maxi...

Страница 19: ...tion function control in or position With the boiler switched ON or all the lamps 10 in Fig 29 are activated The following table gives the relationship between each of the possible lamp combinations a...

Страница 20: ...snor mal operation after 10 minutes Factory setting 3minutes 10 7 Ignition gas pressure adjustment 1 Turn the boiler OFF 2 Remove the front panel of the case 3 Open the gas valve outlet pressure test...

Страница 21: ...f the Venturi device At the moment of opening the burner must turn off 10 9 Removal of the electronic control p c b Warning isolate the boiler from the mains electricity supply before removing any cov...

Страница 22: ...ibed at step 3 turn the knob half a turn and re insert the spindle 11 Operate the boiler and close the gas inlet cock so that the boiler goes into the safety lock out state Verify the correct operatio...

Страница 23: ...est for heat from room thermostat Starts the circulator Operates motorised valve Supplies the ignition device NO Circulator off Operates motorised valve Ignition device off YES YES Fig 43 10 11 Therma...

Страница 24: ...h at work NO YES starts ignition discharges opens gas valve beginning of ignition period flame presence end of ignition period NO NO YES closes gas valve stops fan interrupts ignition discharges memor...

Страница 25: ...gas pressure adjustment 3 Modulation operator s electric connectors 4 On off operators electric connector 5 On off operators 6 Gas valve inlet pressure test point 7 Gas valve outlet pressure test poi...

Страница 26: ...ct the connectors D Fig 50 from the modulating operator and measure the electrical resistance of the coil Its electrical resistance value must be approx 114 n Check the on off operators coils 1 Remove...

Страница 27: ...the switch box verify the position of the shaft B referring to Fig 52 B Boiler OFF Boiler ON Fig 52 n Electrical check It is possible to verify the general operation of the switch by measuring the ele...

Страница 28: ...rrect value 13 3 Removal of the expansion vessel If there is at least 400 mm clearance above the boiler and the rear exit flue can be easily removed the expan sion vessel can be changed without removi...

Страница 29: ...61 1 Flow switch sensor 2 Body 3 O ring 4 Spring 5 Magnetic ring 6 Float 7 Threaded ring 8 Flow limiter M96 28SM M96 32SM op tional accessory 9 Filter 10 Spring seat 5 6 4 9 2 8 7 3 1 Fig 61 14 3 Che...

Страница 30: ...it 5 Reassemble the parts following the removing se quence in reverse order 14 6 Flow limiter The M96 24SM model is factory fitted with a 10 litre min flow limiter If on the M96 28SM and M96 32SM mode...

Страница 31: ...low c h return d h w inlet d h w outlet A B Fig 63 15 2 Checks n Temperature resistance relationship Warning isolate the boiler from the mains electricity supply before removing any covering or compon...

Страница 32: ...e is fitted on the rear side of the div erter group A Fig 65 16 2 Removal Warning isolate the boiler from the mains electricity supply before removing any covering or component 1 Remove all the case p...

Страница 33: ...has to be about 43 M96 24SM 25 M96 28SM M96 32SM at ambient temperature D A C Fig 68 n Check of the Air pressure switch operation Warning isolate the boiler from the mains electricity supply before r...

Страница 34: ...switch 4 Unscrew the screw F and remove the bracket G Fig 71 D E C F G Fig 71 5 Remove the Fan by sliding it towards left se the arrow in Fig 71 6 Assemble the fan carrying out the removal oper ations...

Страница 35: ...ly before removing any covering or component 1 Remove all the case panels and the sealed chamber lid 2 Disconnect the wires from the Air pressure switch 3 Remove the pipe from the Air pressure switch...

Страница 36: ...e removing any covering or component 1 Remove all the case panels the sealed chamber lid and the combustion chamber lid 2 Check for the integrity of the insulation of wires which connect the electrode...

Страница 37: ...ccur Warning isolate the boiler from the mains electricity supply before removing any covering or component n Electrical function 1 Remove all the case panels and the lid of the sealed chamber 2 Remov...

Страница 38: ...egral parts of the boiler If not the electronic control p c b attempts to light the burner and at the end locks the boiler and lights the lock out signal lamp B Fig 81 20 2 Checks n Overheat temperatu...

Страница 39: ...lec trode Fig 83 C B Fig 83 If the drain pipe is plugged or in any case in which the condensate isn t correctly evacuated the condensate level in the trap rises putting in contact the electrodes thus...

Страница 40: ...Safety valve 1 BI1131 100 Watts Orkly alternative 9 E83 178 Combustion chamber side panels 2 BI1326 100 10 E83 180 Combustion chamber rear panel mod M96 24SM 1 BI1326 107 E83 181 Combustion chamber r...

Страница 41: ...Short spare parts list 39 P5 1 2 6 4 5 7 3 8 14 17 12 19 21 22 23 25 26 13 15 24 16 18 9 10 11 9 20 27...

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Страница 44: ...17962 1231 4 0907 44A4 UK Biasi UK Ltd Newman Park Western Way Wednesbury WS10 7BJ Sales Tel No 0121 506 1340 Sales Fax No 0121 506 1360 Service Tel No 0121 506 1350 Service Fax No 0121 506 1370 www...

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