Biasi RIVA ADVANCE HE M110B.24SM/C Service Manual
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Biasi RIVA ADVANCE HE M110B.24SM/C Service Manual

Biasi RIVA ADVANCE HE M110B.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:
M110B.24SM/C
M110B.32SM/C
M110B.24SR/C
Leave this manual adjacent to the gas meter
G.C. Appl. No.
47---583---11
47---583---12
41---580---07

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Summary of Contents for Biasi RIVA ADVANCE HE M110B.24SM/C

  • Page 1 Wall hung, fan flue, room sealed, high efficiency gas boiler Service manual RIVA ADVANCE HE Models: G.C. Appl. No. M110B.24SM/C 47---583---11 M110B.32SM/C 47---583---12 M110B.24SR/C 41---580---07 Leave this manual adjacent to the gas meter...

  • Page 2: Table Of Contents

    Table of contents 11.3 Adjustment ......11.4 Checks ......11.5 Removal of the gas valve .

  • Page 3: Overall Information

    Overall information Overall View Flue temperature probe NTC Safety thermal fuse Condensing heat exchanger air Condensing purger valve heat exchanger Burner Ignition Expansion electrodes vessel Detection Spark electrode Generator Air box Transformer Safety thermostat Gas restrictor C.h. pressure relief valve Air hose Automatic air purger...

  • 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 To gain access to the parts contained in the sealed chamber it is necessary to remove the lid of the sealed chamber. For this purpose, remove the front and side panels of the case, remove the screws G as indicated in Fig. 2.6 and remove the lid.

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

    General access and emptying hydraulic circuits Fig. 2.10 Emptying the d.h.w. circuit Close the d.c.w. inlet cock K (Fig. 2.7). Open one or more hot water taps until the boiler has been completely emptied. Fig. 2.9...

  • Page 7: Diagrams

    Diagrams Wiring diagram M110B.24SM/... M110B.32SM/... Electric supply Three way terminal block diverter valve D.h.w. temperature probe NTC C.h. temperature probe NTC External controls terminal block Gas valve Pump gnye bu D.h.w. flow switch gnye gnye gnye bn bu bk bu rd wh bk bu bn bk rd...

  • Page 8: Wiring Diagram M110B.24Sr

    Diagrams Wiring diagram M110B.24SR/... Electric supply terminal block C.h. temperature probe NTC External controls terminal block Gas valve Pump gnye bu gnye gnye gnye bn bu bk bu bu bn bu bn bu bn bn bu Primary circuit Transformer flow switch 230V~ / 24V~ bn = brown Flame detection...

  • Page 9: 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 12: 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 13: Cleaning

    Condensing heat exchanger the appropriate chapter Maintenance of the Using pliers, remove the spring O moving it downwards and disconnect the rubber pipe P installation instructions manual. (Fig. 5.3). Unscrew the screws Q and remove the clamps (Fig. 5.3). Disconnect the two connectors R by pressing the plastic hook placed on the side of the connector (Fig.
  • Page 14 D.h.w. heat exchanger Function 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 hydraulic circuit to the water destined for d.h.w use. Fig. 6.3 Remove the pump following the instructions in section 7.3.
  • Page 15 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 16 Pump Unscrew the two screws K that hold the pump on in the inlet port of the pump that seals the connection between the pump and the plastic group. the frame and remove the pump. Reassemble the pump carrying out the removal oper- ations in the reverse order.

  • Page 17: Heat Exchanger

    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 18: Removal Of The Diverter Group And Its Internal Parts

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

  • Page 19: 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 20: 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 (14 and 17 in Fig.

  • Page 21: Operation Lights

    Electronic control/ignition p.c.b. With the boiler switched ON ( ) all the lamps (19 in Fig. 9.2) are activated. The following table gives the relationship between each of the possible lamp combinations and their meaning. Normally operating boiler (see the previous table for details) C.h.

  • Page 22: Adjustment Of Maximum Useful Output

    Electronic control/ignition p.c.b. Knob position Maximum useful output in c.h. mode non condensing kW (BTU/h) M110B.24SM/... M110B.32SM/... M110B.24SR/... 5,8 (19 789) 8,2 (27 977) 9,0 (30 707) 12,4 (42 307) Fig. 9.5 12,2 (41 625) 16,5 (56 296) 15,5 (52 884) 20,7 (70 626) 18,7 (63 802) 24,8 (84 614)

  • Page 23: Combi / C.h. Only Mode Setting

    Electronic control/ignition p.c.b. seconds. The lamps will flash a number of times corre- Press the reset button C repeatedly (2 times) until sponding to the setting (Fig. 9.11). the lamps E give the indication as in Fig. 9.14 (boiler mode). To change the setting turn the knob B on a posi- tion corresponding to the desired delay.

  • Page 24: Checks

    Electronic control/ignition p.c.b. Turn the water control to minimum. Lock ---out Gain access to the parts located inside the con- lamp blinks (2 per second) indicating the setting trol panel as explained in the section 2.3 of this has changed manual.
  • Page 25 Electronic control/ignition p.c.b. ing sure of the contact between the boiler reset Attention button B and the tab C (Fig. 9.19). 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.

  • Page 26: Thermal Control In The " " Mode

    Electronic control/ignition p.c.b. 9.11 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 27: Thermal Control In The " " Mode

    Electronic control/ignition p.c.b. 9.12 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. 9.11) circulator off fan still circulator on...

  • Page 28: Transformer

    Transformer Disconnect the four connectors A. Unscrew the screws B and remove the 10.1 Removal Transformer C by sliding it forward. Reassemble the Transformer carrying out the re- moval operations in the reverse order. After reassembling ensure the wires are correctly connected (see Fig.

  • Page 29: 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 30: 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 Read the CO % value. seconds (Fig. 11.4) until the lock ---out signal It should be between 9,0 and 9,8 % (natural gas lamp D blinks.
  • Page 31 Gas valve Unscrew the connector K (Fig. 11.9), remove the fixing fork L and remove the pipe M (Fig. 11.10). Fig. 11.9 Turn off the gas supply and disconnect the gas isolation cock connector from the inlet port of the Fig.

  • Page 32: 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 33: 13 Expansion Vessel And

    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 34: H.w. Flow Switch, Filter And Flow Limiter

    D.h.w. flow switch, filter and flow limiter 14.1 Function 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. 14.3 14.3 Checks Warning: isolate the boiler from the mains electricity supply before removing any covering or component.
  • Page 35 D.h.w. flow switch, filter and flow limiter If on the M110B.32SM/... model the flow rate of the Separate the flow switch plug 1 from the body 4 d.h.w. circuit is too high, it is possible to limit it by instal- levering with a screwdriver one of the two hooks.

  • Page 36: 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 37: Removal Of The D.h.w.temperature Probe

    Temperature probe 15.4 Removal of the d.h.w.Temperature probe Remove the electric connector D and unscrew the d.h.w. Temperature probe B --- Fig. 15.3 Reassemble the d.h.w. Temperature probe carry- Warning: isolate the boiler from the mains ing out the removal operations in reverse order. electricity supply before removing any covering or component.

  • Page 38: Function

    By---pass valve Empty the primary circuit of the boiler. Remove the diverter group as described in the 16.1 Function section 8.4 of this manual. Unscrew the connector B and remove the by--- The By---pass valve A in Fig. 16.1 is located between pass valve C (Fig.

  • Page 39: Removal Of The Air Box And The Fan

    Fan and Air box Disconnect the air manifold C (Fig. 17.2) by pul- ling it. 17.1 Function The function of the Fan A (Fig. 17.1) is to force the mix- ture of air and gas into the burner. The function of the Air box B is to mix the gas and the air in the right proportion.

  • Page 40: Ignition And Detection Electrodes, Burner And Spark Generator

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

  • Page 41: 18.5 Removal Of The Rear Insulation

    Ignition and detection electrodes Unscrew the screws J (Fig. 18.1 )and remove the Before reassembling ensure the burner gasket is cover of the combustion chamber. correctly located. Unscrew the screws K (Fig. 18.1 ) and remove the Warning: After cleaning or replacement as Air---gas duct lid.

  • Page 42: Removal Of The Spark Generator

    Ignition and detection electrodes There is not a significant way to verify the integrity of the spark generator. When the fan turns but the burner does not light a poss- ible cause is a faulty spark generator and it is advisable to replace it to locate the fault.
  • Page 43 Ignition and detection electrodes Check for the integrity of the insulation of wires cause foreign body irritation, which can cause severe irritation to people wearing contact lenses. Irritation to which connect the electrodes to the spark gener- respiratory tract. ator and to the control/ignition p.c.b. Precautions --- Dust goggles will protect eyes.

  • Page 44: Safety Thermostat

    Safety thermostat Electrical function Remove all the case panels and the lid of the 19.1 Function sealed chamber. The safety thermostat A in Fig. 19.1 is a device that Disconnect the safety thermostat and check its senses the temperature of the primary circuit water electrical function.

  • Page 45: Function

    Flue temperature probe NTC and NTC and acts as a safety device in extreme case of in- correct operation of the Flue temperature control sys- Safety thermal fuse tem. Reaching the breakdown temperature it opens the cir- 20.1 Function cuit and locks out the boiler. The Flue temperature probe NTC A in Fig.

  • Page 46: Flue Thermostat

    Flue thermostat 12500 12000 11500 11000 10500 10000 9500 9000 8500 8000 7500 7000 6500 6000 5500 5000 4500 4000 3500 3000 2500 2000 1500 1000 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 ˚C Fig.
  • Page 47 Condensate trap 21.2 Check the cleanness of the trap Unscrew the plug on the bottom of the trap and remove 21.1 Function dirt eventually deposit. 21.3 Removal The condensate trap A in Fig. 21.1 and Fig. 21.2 allows the discharge of the condensate via the condensate Warning: isolate the boiler from the mains drain pipe avoiding in the mean time the escape of electricity supply before removing any...
  • Page 48 Short spare parts list Key G.C. part no. Description Q.ty Manufac- Manufacturer’s reference turer part no. H58---688 Burner (mod. M110B.24SM/... M110B.24SR/...) BI1293 100 H58---689 Burner (mod. M110B.32SM/...) BI1293 101 E94---576 Expansion vessel BI1182 105 CIMM 7 litres H58---659 Condensing heat exchanger (mod. BI1432 100 M110B.24SM/...
  • Page 49 Short spare parts list...
  • Page 52 *1796213402* 17962.1340.2 2008 52A4 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.biasi.co.uk...

This manual is also suitable for:

Riva advance he m110b.32sm/cRiva advance he m110b.24sr/c

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