Biasi RIVA ADVANCE HE M110.24SM/C Service Manual
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Biasi RIVA ADVANCE HE M110.24SM/C Service Manual

Biasi RIVA ADVANCE HE M110.24SM/C Service Manual

Wall hung, fan flue, room sealed, high efficiency gas boiler
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Wall hung, fan flue, room sealed, high efficiency gas boiler
Service manual
RIVA ADVANCE HE
Models:
M110.24SM/C
M110.32SM/C
Leave this manual adjacent to the gas meter
G.C. Appl. No.
47---970---29
47---970---30

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Summary of Contents for Biasi RIVA ADVANCE HE M110.24SM/C

  • Page 1 Wall hung, fan flue, room sealed, high efficiency gas boiler Service manual RIVA ADVANCE HE Models: G.C. Appl. No. M110.24SM/C 47---970---29 M110.32SM/C 47---970---30 Leave this manual adjacent to the gas meter...

  • Page 2: Table Of Contents

    Table of contents Primary circuit flow switch ... 12.1 Function ......12.2 Checks .

  • Page 3: Overall Information

    Overall information Overall View Flue temperature C.h. temp. probe NTC probe Condensing heat exchanger Safety Burner Expansion thermostat vessel Ignition electrodes Detection electrode Spark Generator Transformer restrictor Gas restrictor Automatic air release Diverter valve valve D.h.w. Flow Switch Pump Condensate Main circuit trap flow switch...

  • Page 4: General Access And Emptying Hydraulic Circuits

    General access and emptying hydraulic circuits Nomenclature Fig. 2.2 To remove the side panels loosen the screws B and C (Fig. 2.3), bring the base of the panels away from the boiler and lift them, freeing them from the top hooks. Fig.

  • Page 5: Access To The Sealed Chamber

    General access and emptying hydraulic circuits Pass the terminal block connected to the boiler through the hole of the control panel lid (Fig. 2.7). Fig. 2.4 Remove the screws E and remove the service panel (Fig. 2.5); If the external temperature probe (optional) is fitted fol- low the steps 6 to 9.

  • Page 6: Emptying The D.h.w. Circuit

    General access and emptying hydraulic circuits Attention: some water could remain in the condens- ing heat exchanger. Close drain tap once the emptying has been completed. Fig. 2.9 --- bottom view of the boiler Remove the front and right panels of the boiler. Open the drain tap L (Fig.

  • Page 7: Diagrams

    Diagrams Wiring diagram Electric supply Three way External temperature probe terminal block diverter valve D.h.w. temperature terminal block probe NTC C.h. temperature probe NTC External controls terminal block rd bk Gas valve Pump gnye bu D.h.w. flow switch gnye gnye gnye bn bu bk bu...

  • Page 8: Circuit Voltages

    Diagrams Circuit voltages during c.h. or d.h.w. operation Electrical voltages with burner on only during c.h. operation only during d.h.w. operation Pump 3 way D.h.w. diverter valve Flow switch Gas valve Supply network Safety Transformer Main circuit thermostat pressure switch...

  • Page 11: Condensing Heat Exchanger

    Condensing heat exchanger Function The Condensing heat exchanger A in Fig. 5.1 has the function of transferring heat produced from combus- tion of the gas and from the flue exhausted gas to the water circulating in it. Fig. 5.1 By reducing the combustion products temperature, the latent heat of the vapour is transferred to the water cir- cuit, allowing an extra gain of useful heat.

  • Page 12: Cleaning

    Condensing heat exchanger Free the pipes R and P from the connection of the Condensing heat exchanger (Fig. 5.6). Fig. 5.6 Unscrew the screws S and remove the clamps (Fig. 5.4). Unscrew the screws T and remove the support U (Fig. 5.6). Remove the Condensing heat exchanger by levering it and sliding it forwards.

  • Page 13: D.h.w. Heat Exchanger

    D.h.w. heat exchanger Removal Warning: isolate the boiler from the mains Function electricity supply before removing any covering or component. The d.h.w heat exchanger A in Fig. 6.1 and Fig. 6.3 al- lows the instantaneous transfer of heat from the primary Remove the front and right hand side panels of hydraulic circuit to the water destined for d.h.w use.

  • Page 14: Removal

    Pump Check that the impeller is integral with the rotor. With the boiler off remove the front and right hand side Function case panels, lower the control panel and empty the pri- mary circuit. The pump A in Fig. 7.1 and Fig. 7.2 has the function of Remove the pump head by undoing the screws which making the water in the main circuit circulate through hold it to the pump body and check that the impeller is...

  • Page 15: Three Way Diverter Valve

    Three way diverter valve Function Spindle B not visible The diverter valve A (Fig. 8.1) has the function of mod- ifying the hydraulic circuit of the boiler by means of an electric command given by the electronic control p.c.b. in order to send the water that exits the primary heat ex- changer towards the c.h.

  • Page 16: Removal Of The Diverter Group And Its Internal Parts

    Three way diverter valve Unscrew the screw L and remove the diverter group. Fig. 8.4 Removal of the diverter group and its internal parts Fig. 8.6 Rear view of the boiler Refer to the exploded view in Fig. 8.7 to remove Remove the front and both side case panels.

  • Page 17: Electronic Control/Ignition P.c.b

    Electronic control/ignition p.c.b. The fundamental function of the Electronic control/igni- tion p.c.b. is that of controlling the boiler in relation to the external needs (i.e. heating the dwelling or heating Function the water for d.h.w. use) and operating in order to keep the temperature of the hydraulic circuits constant.

  • Page 18: Checking The Temperature

    Electronic control/ignition p.c.b. tiometers etc.) others, like the fuses, are accessible by The temperature of the water is converted into an elec- removing the service panel. tric signal by means of temperature probes. The user, setting the desired temperature with the con- trol panel knobs operates the variable elements (13 and 16 in Fig.

  • Page 19: Operation Lights

    Electronic control/ignition p.c.b. with the signal given by the control panel through the Boiler in stand --- by condition. (function control in adjustment made by the user (knob position). Anti--- freeze system active. A short pulse every 4 seconds Boiler ON condition (function control in position) 1 second ON 1 second OFF...

  • Page 20: Setting The Boiler Control Function Modes

    Electronic control/ignition p.c.b. Setting the boiler control function modes Knob position Maximum useful output in c.h. mode non condensing It is possible to select the various boiler control function kW (BTU/h) modes by using the function selector knob A and the M110.24SM/...

  • Page 21: Checks

    Electronic control/ignition p.c.b. To change the setting turn the knob B on a posi- the Commissioning chapter of the installation man- tion corresponding to the desired delay. ual. By turning the knob B, the lock ---out signal lamp Gain access to the parts located inside the con- D blinks quickly (2 per seconds) indicating that trol panel as explained in the section 2.3 of this the setting has changed and must be memo-...
  • Page 22 Electronic control/ignition p.c.b. After installing the Electronic control/ignition p.c.b. : Make sure the c.h. ( ) and d.h.w. ( ) tem- perature adjustment knobs can move freely for the complete range. If not, remove the spindle again as described at step 3, turn the knob half a turn and re---insert the spindle.

  • Page 23: Thermal Control In The " " Mode

    Electronic control/ignition p.c.b. 9.10 Thermal control in the ” ” mode Switch in the function mode Taking circulator off water from the domestic hot circulator on fan still water circuit? stop circulator (3min) Is primary circuit Main circuit pressure Operation lights temperature higher than that switch consense? selected?

  • Page 24: Thermal Control In The " " Mode

    Electronic control/ignition p.c.b. 9.11 Thermal control in the ” ” mode Switch in the function mode See functioning with the function Taking Request for heat from control in the mode water from the domestic hot room thermostat? water circuit? (sec. 9.10) circulator off fan still circulator on...

  • Page 25: Transformer

    Transformer Remove all the case panels and the sealed chamber lid (see section 2). 10.1 Removal Disconnect the four connectors A. Unscrew the screws B and remove the Transformer C by sliding it forward. Reassemble the Transformer carrying out the re- moval operations in the reverse order.

  • Page 26: Gas Valve

    Gas valve 11.3 Adjustment Warning: isolate the boiler from the mains 11.1 Function electricity supply before removing covering or component. The Gas valve A in Fig. 11.1 controls the gas inflow to the boiler burner. Check the supply pressure before making any ad- justment to the gas valve.

  • Page 27: Checks

    Gas valve Fig. 11.7 Fig. 11.4 Allow the analyser to give a stable reading. Keep pressed the reset button C for about 10 seconds (Fig. 11.4) until the lock ---out signal Read the CO % value. It should be between 8,3 lamp D blinks.
  • Page 28 Gas valve Remove the brass plug and turn the plastic screw 1 (Fig. 11.2) fully clockwise until it stops. Do not overtight. Turn it counter---clockwise 2 and 3/4 turns. Adjust the gas valve using the flue analyser as de- scribed in section 11.3. After any service operation on the components of the gas circuit check all the connections for gas leaks.

  • Page 29: Primary Circuit Flow Switch

    Primary circuit flow switch 12.1 Function Boiler OFF Boiler ON The Primary circuit flow switch (A in Fig. 12.1) function is to detect water flow rate through the primary hy- Fig. 12.2 draulic circuit of the boiler. Electrical check It is possible to verify the general operation of the switch by measuring the electric resistance between the con- tacts C.

  • Page 30: Checks Removal

    Primary circuit flow switch Unscrew the four screws E (see Fig. 12.5) open sion vessel can be changed without removing the boiler. the hydraulic operator and remove the mem- brane F. Warning: isolate the boiler from the mains electricity supply before removing any covering or component.

  • Page 31: H.w. Flow Switch, Filter And Flow Limiter

    D.h.w. flow switch, filter and flow Float Threaded ring limiter Flow limiter (M110.28SM/... optional accessory) 14.1 Function Filter Spring seat The d.h.w. flow switch A in Fig. 14.1 is a device that generates an electrical signal when hot water is drawn. Fig.

  • Page 32: Flow Limiter

    D.h.w. flow switch, filter and flow limiter Unscrew the body 2(Fig. 14.3) and extract the Nominal flow rate (litres/min) Colour flow switch group. Yellow To remove the filter from the flow switch group Brown separate the filter 9 from the threaded ring (Fig.

  • Page 33: Temperature Probe

    Temperature probe 15.2 Checks 15.1 Function Temperature---resistance relationship The Temperature probe has the function of converting the temperature of the water in the hydraulic circuit Warning: isolate the boiler from the mains where it is installed into an electrical signal (resistance). electricity supply before removing any The relation between temperature and electrical resis- covering or component.
  • Page 34 Temperature probe Fig. 15.4...

  • Page 35: Function

    By---pass valve 16.2 Removal 16.1 Function Warning: isolate the boiler from the mains electricity supply before removing any The By---pass valve A in Fig. 16.1 is located between covering or component. the c.h. water flow and return and its function is that of guaranteeing a minimum flow across the primary heat Remove all the case panels.

  • Page 36: Removal Of The Fan Group

    Fan and Air box Completely loosen the gas connection D (Fig. 17.2). 17.1 Function Loosen without removing the screw E. Remove the screws F and the air box G. Leave the The function of the Fan A (Fig. 17.1) is to force the mix- air box with the air hose clamped to the water ture of air and gas into the burner.

  • Page 37: Removal Of The Air Box

    Fan and Air box the appropriate chapter Maintenance of the 17.4 Removal of the Fan installation instructions manual. Warning: isolate the boiler from the mains electricity supply before removing any 17.3 Removal of the Air box covering or component. Remove the fan group (see section 17.2). Warning: isolate the boiler from the mains electricity supply before removing any Unscrew the screws N (Fig.

  • Page 38: 18 Ignition And Detection Electrodes

    Ignition and detection electrodes, burner and spark generator 18.1 Function Three electrodes are fitted on the fan---burner group. Two of them, fitted on the left side of the fan---burner group A, are the ignition electrodes B and are con- nected to the spark generator C. On the right side is the detection electrode D and it de- tects the presence of the flame.

  • Page 39: Removal Of The Front Insulation Panel

    Ignition and detection electrodes Remove the fan group (see section 17.2) Assemble the new front insulation carrying out the removal operation in reverse order. Remove the burner by sliding it forward. When fitting the new panel ensure that the elec- trodes holes coincide with the holes of the com- bustion chamber.

  • Page 40: Removal Of The Flue Hood

    Ignition and detection electrodes 18.6 Removal of the flue hood Before reassembling ensure that the flue hood gasket is correctly mounted (Fig. 18.8). Remove the condensing heat exchanger (see section 5.2). 18.7 Removal of the spark generator Warning: isolate the boiler from the mains electricity supply before removing any covering or component.
  • Page 41 Ignition and detection electrodes 4 mm Check for the integrity of the insulation of wires which connect the electrodes to the spark gener- ator and to the control/ignition p.c.b. Warning -- Insulation panels material handling care Ignition Mineral fibres are used in this appliance for the insula- tion panels of the combustion chamber Excessive exposure to these materials may cause tem- porary irritation to eyes, skin and respiratory tract.

  • Page 42: Safety Thermostat

    Safety thermostat Disconnect the safety thermostat and check its electrical function. Normally (no intervention) the 19.1 Function contact must be closed (electrical resistance zero Ω). The safety thermostat A in Fig. 19.1 is a device that senses the temperature of the primary circuit water 19.3 Removal which flows in the outlet pipe of the condensing heat ex-...

  • Page 43: Checks

    Flue temperature probe NTC 20.2 Removal 20.1 Function Warning: isolate the boiler from the mains The Flue temperature probe NTC A in Fig. 20.1 and electricity supply before removing any Fig. 20.2 senses the temperature of the combustion covering or component. products that flow through the condensing heat ex- Remove all the case panels and the sealed changer.

  • Page 44: Condensate Trap Function

    Condensate trap level in the trap rises till it reaches thus causing the boiler lock ---out. 21.1 Function 21.2 Removal The condensate trap A in Fig. 21.1 and Fig. 21.2 allows Warning: isolate the boiler from the mains the discharge of the condensate via the condensate electricity supply before removing any drain pipe avoiding in the mean time the escape of covering or component.
  • Page 45 External temperature probe 22.2 Checks (optional) Warning: isolate the boiler from the mains 22.1 electricity supply before removing any Function covering or component. The External temperature probe if fitted, allows to ad- just automatically the temperature of the c.h. flow with Disconnect the cable from the External temperature reference to the external temperature.

  • Page 46: Short Spare Parts List

    Short spare parts list Key G.C. part no. Description Q.ty Manufac- Manufacturer’s reference turer part no. Burner (mod. M110.24SM/...) BI1223 101 Burner (mod. M110.32SM/...) BI1223 102 Expansion vessel BI1182 105 CIMM 7 litres Condensing heat exchanger (mod. BI1282 101 M110.24SM/...) Condensing heat exchanger (mod.
  • Page 47 Short spare parts list...
  • Page 48 *1796211191* 17962.1119.1 1406 48A4 UK Biasi U.K. Ltd Unit 31/33, Planetary Road Industrial Estate, Neachells Lane Willenhall, Wolverhampton WV 13 3XB Technical helpline: 01902 304 400 Web site: www.biasi.co.uk...

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Riva advance he m110.32sm/c

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