Biasi Advance Plus 25C ERP Service Manual
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Biasi Advance Plus 25C ERP Service Manual

Biasi Advance Plus 25C ERP Service Manual

Wall hung, fanflue, roomsealed, high efficiency gas boiler
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See also: User Manual and Installation Instructions
Wall hung, fanflue, roomsealed, high efficiency gas boiler
Service manual
Advance Plus ERP
Models
Advance Plus 25C ERP
Advance Plus 30C ERP
Advance Plus 35C ERP
Advance Plus 25S ERP
Advance Plus 30S ERP
Leave this manual adjacent to the gas meter
Warning:
Service / repairs must be carried out, only by a qualified Gas Safe Registered
Engineer, who will be responsible for the current Regulations for gas
appliances.
Note:
After servicing, complete the relevant Service Interval Record section of the
Benchmark Checklist of the user and installation manual.
G.C. Appl. No.
47-583-35
COMBI BOILER
47-583-36
COMBI BOILER
47-583-37
COMBI BOILER
41-583-28
SYSTEM BOILER
41-583-29
SYSTEM BOILER

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Summary of Contents for Biasi Advance Plus 25C ERP

  • Page 1 Wall hung, fanflue, roomsealed, high efficiency gas boiler Service manual Advance Plus ERP Models G.C. Appl. No. Advance Plus 25C ERP 47-583-35 COMBI BOILER Advance Plus 30C ERP 47-583-36 COMBI BOILER Advance Plus 35C ERP 47-583-37 COMBI BOILER Advance Plus 25S ERP...

  • Page 3: Table Of Contents

    14.2 Description and location of parts - (Figure 14.2) ..36 Wiring diagram Advance Plus 25C ERP - Advance Plus 14.3 Removal of the sensor......36 30C ERP - Advance Plus 35C ERP.

  • Page 4: Overall Information

    OVERALL INFORMATION OVERALL INFORMATION 1 .1 Overall View Flue temperature probe NTC - flue thermal fuse Safety thermal fuse Condensing heat exchanger air purger valve Condensing Ighition heat exchanger electrodes Burner Detection Expansion electrode vessel C.H. temperature probe NTC Air/gas mixer) Pipe silencer Safety thermostat Condensate...

  • Page 5: General Access And Emptying Hydraulic Cir

    GENERAL ACCESS AND EMPTYING HYDRAULIC CIRCUITS GENERAL ACCESS AND EMPTYING Pull the lower part of the front panel and lift it upwards (Figure HYDRAULIC CIRCUITS 2.3). 2 .1 Nomenclature Figure 2 .3 To remove the side panels loosen the screws "B" (Figure 2.2) and "C"...

  • Page 6: Control Panel

    GENERAL ACCESS AND EMPTYING HYDRAULIC CIRCUITS 2 .3 Control panel Terminal block lid removal 2 To remove the terminal block lid "F" (Figure 2.7), free the front Warning: isolate the boiler from the mains electrici- hooks. ty supply before removing any covering or compo- nent .

  • Page 7: Emptying The Primary Circuit

    GENERAL ACCESS AND EMPTYING HYDRAULIC CIRCUITS Figure 2 .9 2 .5 Emptying the primary circuit 1 Close the C.H. circuit flow and return cocks "G" (Figure 2.10). Figure 2 .12 2 .6 Emptying the D .H .W . circuit 1 Close the D.H.W. inlet cock "H" (Figure 2.10). 2 Open one or more hot water taps until the boiler has been completely emptied.

  • Page 8: Diagrams

    DIAGRAMS DIAGRAMS 3 .1 Wiring diagram Advance Plus 25C ERP - Advance Plus 30C ERP - Advance Plus 35C ERP diverter valve Flame detection Ignition electrode electrodes Pump gnye gnye Flue temp. probe NTC Flue thermal fuse Safety thermal fuse D.h.w.

  • Page 9: Wiring Diagram Advance Plus 25S Erp - Advance Plus 30S Erp

    DIAGRAMS 3 .2 Wiring diagram Advance Plus 25S ERP - Advance Plus 30S ERP Gas valve Flame detection Ignition electrode electrodes Pump gnye gnye Flue temp. probe NTC Flue thermal fuse Safety thermal fuse Fuse 2AF 250VAC 5x20 Primary circuit pressure switch gnye C.h.

  • Page 10: Circuit Voltages

    DIAGRAMS 3 .3 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 3 way Pump D.H.W. diverter valve Flow switch Gas valve Safety Supply network Main circuit thermostat pressure switch Figure 3 .3 - 10 -...

  • Page 11: Fault Finding

    FAULT FINDING FAULT FINDING - 11 -...
  • Page 12 FAULT FINDING - 12 -...

  • Page 13: Display Diagnostic

    FAULT FINDING 4 .1 Display diagnostic The display indications provide help in the diagnosis of fault find- ing. The control panel display gives other information for the user. The following table gives fault code, error and the reson for the fault. Er 01 + RESET Lack of burner ignition on safety lockout Er 02 + RESET Safety thermostat intervention lockout Er 03 + RESET General lockout Faulty primary circuit (no water or absence...

  • Page 14: Condensing Heat Exchanger

    CONDENSING HEAT EXCHANGER CONDENSING HEAT EXCHANGER 5 .1 Function The Condensing heat exchanger "A" in Figure 5.1 has the func- tion of transferring heat produced from combustion of the gas and from the flue exhausted gas to the water circulating in it. Figure 5 .1 By reducing the combustion products temperature, the latent heat of the vapour is transferred to the water circuit, allowing an extra gain of useful heat.

  • Page 15: Cleaning

    CONDENSING HEAT EXCHANGER 15 Reassemble the Condensing heat exchanger carrying out the removal operations in reverse order. Ensure to tighten the nuts "H" - Figure 5.2 firmly. 5 .3 Cleaning If there are deposits of dirt on the coil of the Condensing heat exchanger, clean with a bristle paintbrush and remove the dust with a hoover.

  • Page 16: H .W . Heat Exchanger

    D.H.W. HEAT EXCHANGER D .H .W . HEAT EXCHANGER 6 .1 Function The D.H.W. heat exchanger "A" in Figure 6.1 and Figure 6.3 al- lows the instantaneous transfer of heat from the primary hydrau- lic circuit to the water destined for D.H.W. use. Figure 6 .3 6 Move the exchanger towards the rear of the boiler and extract it to the left.

  • Page 17: Pump

    PUMP PUMP 7 .2 Removal pump 7 .1 Function Warning: isolate the boiler from the mains electrici- ty supply before removing any covering or compo- The pump "A" in Figure 7.1 and Figure 7.2 has the function of nent . making the water in the main circuit circulate through the main condensing heat exchanger and therefore through the C.H.

  • Page 18: Three Way Diverter Valve

    THREE WAY DIVERTER VALVE THREE WAY DIVERTER VALVE 8 .1 Function The diverter valve "A" (Figure 8.1) has the function of modifying the hydraulic circuit of the boiler by means of an electric com- mand given by the electronic control p.c.b. in order to send the water that exits the primary heat exchanger towards the C.H.

  • Page 19: Removal Of The Three Way Diverter Valve

    THREE WAY DIVERTER VALVE mary circuit pressure switch "J". Figure 8 .4 Figure 8 .6 8 .4 Removal of the three way diverter valve 5 Disconnect D.H.W. temperature probe "K". 1 Remove the front and both side case panels. 2 Empty the primary circuit and the D.H.W. circuit of the boiler. 3 Remove the electric actuator (see "8.3 Removal of the elec- tric actuator"...

  • Page 20: Main Electronic Control/Ignition P.c.b

    MAIN ELECTRONIC CONTROL/IGNITION P.C.B. MAIN ELECTRONIC CONTROL/IGNITION The fundamental function of the Main electronic control/ignition P .C .B . p.c.b. is that of controlling the boiler in relation to the external needs (i.e. heating the dwelling or heating the water for D.H.W. 9 .1 Function use) and operating in order to keep the temperature of the hy- draulic circuits constant.

  • Page 21: Checking The Temperature

    MAIN ELECTRONIC CONTROL/IGNITION P.C.B. Figure 9 .2 1 Connector - ignition electrode. 2 Connector - flame detection electrode 3 Connector - controller fan 4 Connector - flue temperature probe NTC 5 Connector - D.H.W. temperature probe NTC, D.H.W. flow switch and external temperature probe (optional) 6 Connector - primary circuit pressure switch 7 Connector - safety thermostat and C.H.

  • Page 22: Setting The Boiler Control Function Modes

    MAIN ELECTRONIC CONTROL/IGNITION P.C.B. Normally, the result of the comparison between these two signals directly operates the fan speed adjusting the useful output gen- erated in order to stabilize the temperature of the exiting water. If during the D.H.W. mode operation, the temperature of the pri- mary circuit goes over 90°C, the useful output is automatically reduced so that the primary circuit cannot reach excessive tem- peratures.
  • Page 23 Pr 01 00 = No power Er 99 Boiler type (to be Chimney sweep Pr 09 00 = No chimney sweep fun updated with the 60 = Advance Plus 25C ERP function (factory set) complete range) 63 = Advance Plus 30C ERP 01 = D.H.W.

  • Page 24: Checks

    MAIN ELECTRONIC CONTROL/IGNITION P.C.B. PARAMETER DIGIT VALUES C.H. flow temperature Pr 25 25÷85 (factory set 45 °C) in antifreeze protection mode °C Maximum temperature Pr 26 65÷75 (factory set according at main exchanger to Pr 01) outlet in D.H.W. pre- heating mode °C C.H.

  • Page 25: Thermal Control In The

    MAIN ELECTRONIC CONTROL/IGNITION P.C.B. 9 .7 Thermal control in the mode Switch in the function mode Taking circulator off water from the domestic hot circulator on fan still water circuit? Is primary circuit Main circuit pressure stop circulator (3min) temperature higher than that switch consense? selected? lock memorised?

  • Page 26: Mode

    MAIN ELECTRONIC CONTROL/IGNITION P.C.B. 9 .8 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. 9.7) circulator off fan still circulator on...

  • Page 27: Control Panel Electronic P.c.b

    CONTROL PANEL ELECTRONIC P.C.B. 10 CONTROL PANEL ELECTRONIC P .C .B . FUNCTION Faulty central heating temp. probe NTC 10 .1 Function Er 12 + (return) Er 13 + DT delivery-return >40K Faulty pump or primary temperature Er 14 + RESET above 105°...

  • Page 28: Info Modality

    CONTROL PANEL ELECTRONIC P.C.B. FUNCTION Boiler in antifrost phase (AF flashing + temperature flashing) Set C.H. (all other symbols are disabled) Remote control connected (one flash Figure 10 .2 every 4 sec.) To scroll the values press B (reduce) and A (increase). keys (Fig- Set D.H.W.
  • Page 29 CONTROL PANEL ELECTRONIC P.C.B. Figure 10 .3 4 Unscrew the screws "H". 5 Delicately flex the hooks "I" in the directions indicated (Figure 10.3) in order to release the circuit from the box. 6 Remove the Control panel electronic p.c.b. 7 Reassemble the Control panel electronic p.c.b. carrying out the removal operations in the reverse order.

  • Page 30: Gas Valve

    GAS VALVE 11 GAS VALVE 11 .3 Adjustment Warning: isolate the boiler from the mains electrici- 11 .1 Function ty supply before removing any covering or compo- nent . The gas valve "A" in Figure 11.1 controls the gas inflow to the boiler burner. Check the supply pressure before making any adjustment to the gas valve .
  • Page 31 % value. It should be between: Figure 11 .7 Model Type gas CO % value (range) Advance Plus 25C ERP N a t u r a l 18 Allow the analyser to give a stable reading. Advance Plus 35C ERP 9,3 - 9,9 19 Read the CO % value.

  • Page 32: Checks

    GAS VALVE set boiler status (Figure 11.10) C.H. / D.H.W. function Figure 11 .10 25 Switch off the boiler and turn off the hot water tap(s). 26 Close the air-flue sampling points. 27 After adjustment fit the protective brass plug ("C" - Figure 11.2). Important: after the gas pressure checks and any adjust- ment operations, all of the test points must be sealed .

  • Page 33: Primary Circuit Pressure Switch

    PRIMARY CIRCUIT FLOW SWITCH 12 PRIMARY CIRCUIT PRESSURE SWITCH 12 .3 Removal Warning: isolate the boiler from the mains electrici- 12 .1 Function ty supply before removing any covering or compo- nent . The Primary circuit pressure switch ("A" in Figure 12.1) function is to check the presence of water in the primary hydraulic circuit 1 Remove the front and right hand side panels of the case, turn and that the pressure is above the minimum.

  • Page 34: Expansion Vessel And Pressure Gauge

    EXPANSION VESSEL AND PRESSURE GAUGE 13 EXPANSION VESSEL AND PRESSURE 13 .3 Removal of the expansion vessel GAUGE Warning: isolate the boiler from the mains electrici- ty supply before removing any covering or compo- 13 .1 Function nent . The Expansion vessel ("A" in Figure 13.1) function is to allow 1 Remove the front and right hand side panels of the case, turn for the volume expansion of the C.H.

  • Page 35: Removal Of The Temperature-Pressure Gauge

    EXPANSION VESSEL AND PRESSURE GAUGE 13 .4 Removal of the temperature-pressure gauge 1 Remove the front and right hand side panels of the case, turn off the flow and return isolation valves and empty the primary circuit. 2 Enlarge the fork "F" and the connector "G" (Figure 13.4). Figure 13 .4 3 Squeeze the tabs "H" to release the temperature-pressure gauge "I"...

  • Page 36: H .W . Flow Switch, Filter And Flow Limiter

    D.H.W. FLOW SWITCH, FILTER AND FLOW LIMITER 14 D .H .W . FLOW SWITCH, FILTER AND 14 .3 Removal of the sensor FLOW LIMITER Warning: isolate the boiler from the mains electrici- ty supply before removing any covering or compo- 14 .1 Function nent .

  • Page 37: Removal Of The Flow Switch Group And D.h.w. Circuit Filter

    D.H.W. FLOW SWITCH, FILTER AND FLOW LIMITER 14 .5 Removal of the flow switch group and D.H.W. circuit filter Warning: isolate the boiler from the mains electrici- ty supply before removing any covering or compo- nent . 1 Please remove the sensor first as previously described and ensure it remains dry. 2 Remove the front panel of the case and empty the D.H.W.

  • Page 38: Temperature Probe

    TEMPERATURE PROBE 15 TEMPERATURE PROBE 15 .2 Checks Temperature-resistance relationship 15 .1 Function The Temperature probe has the function of converting the tem- Warning: isolate the boiler from the mains electrici- ty supply before removing any covering or compo- perature of the water in the hydraulic circuit where it is installed into an electrical signal (resistance).
  • Page 39 TEMPERATURE PROBE Warning: to lubricate the O-ring gaskets exclusively use a silicone base grease compatible to be in con- tact with foods and approved by the local water Au- thorities . Figure 15 .4 - 39 -...

  • Page 40: By-Pass Valve

    BY-PASS VALVE 16 BY-PASS VALVE Attention . When reassembling the By-pass valve be sure that it is correctly oriented by matching the reference "C" with the notch "D" of the water group Figure 16 .3 . 16 .1 Function The By-pass valve "A" in Figure 16.1 is located between the C.H. water flow and return and its function is that of guaranteeing a minimum flow across the primary heat exchanger if the circula- tion across the C.H.

  • Page 41: Fan And Air Box

    FAN AND AIR BOX 17 FAN AND AIR BOX 3 Disconnect the air manifold "E" (Figure 17.2). 4 Unscrew the gas connector "F". 17 .1 Function 5 Remove the gas pipe "G". The function of the Fan "A" (Figure 17.1) is to force the mixture of 6 Disconnect the connector "C".

  • Page 42: Ignition, Detection Electrodes And Burner

    IGNITION AND DETECTION ELECTRODES 18 IGNITION, DETECTION ELECTRODES 18 .2 Removal of the Ignition and detection elec- AND BURNER trodes Warning: isolate the boiler from the mains electrici- 18 .1 Function ty supply before removing any covering or compo- nent . Three electrodes are fitted on the fan-burner group.

  • Page 43: Removal Of The Front Insulation Panel

    IGNITION AND DETECTION ELECTRODES 6 Assemble the burner carrying out the removal operation in chamber silicon seal (Figure 18.6) and the Air-gas duct gasket reverse order. Ensure the burner is correctly located by lining (Figure 18.7) must be fully inspected and replaced at the discre- up the locating tab (Figure 18.4).
  • Page 44 IGNITION AND DETECTION ELECTRODES Warning: isolate the boiler from the mains electrici- Should the mentioned electrode come into contact with the con- ty supply before removing any covering or compo- densate water present within the combustion chamber it sends nent . the boiler into safety lockout.

  • Page 45: Safety Thermostat

    SAFETY THERMOSTAT 19 SAFETY THERMOSTAT 19 .3 Removal 19 .1 Function Warning: isolate the boiler from the mains electrici- ty supply before removing any covering or compo- The safety thermostat "A" in Figure 19.1 is a device that senses nent . the temperature of the primary circuit water which flows in the outlet pipe of the condensing heat exchanger.

  • Page 46: Flue Temperature Probe Ntc - Flue Thermal

    FLUE TEMPERATURE PROBE NTC AND SAFETY THERMAL FUSE 20 FLUE TEMPERATURE PROBE NTC - A Safety thermal fuse "B" in Figure 20.1 and Figure 20.2 is also FLUE THERMAL FUSE AND SAFETY connected in series with the Flue temperature probe NTC and THERMAL FUSE acts as a safety device in extreme case of incorrect operation of the Flue temperature control system.
  • Page 47 FLUE TEMPERATURE PROBE NTC AND SAFETY THERMAL FUSE 12500 12000 11500 11000 10500 10000 9500 9000 8500 8000 7500 7000 6500 6000 5500 5000 4500 4000 3500 3000 2500 2000 1500 1000 °C 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Figure 20 .4 - 47 -...

  • Page 48: Condensate Trap

    CONDENSATE TRAP 21 CONDENSATE TRAP 21 .3 Removal Warning: isolate the boiler from the mains electrici- 21 .1 Function ty supply before removing any covering or compo- nent . The condensate trap "A" in Figure 21.1 and Figure 21.2 allows the discharge of the condensate via the condensate drain pipe 1 Remove the front and right case panels.

  • Page 49: Short Spare Parts List

    Gas valve BI1313 103 SIT 848 RQ Safety valve BI1441 116 (mod. Advance Plus 25C ERP, Advance Plus 30C ERP, Advance Plus 35C ERP) E83-013 Safety valve BI1131 100 (mod. Advance Plus 25S ERP, Advance Plus 30S ERP) Main Electronic control/ignition p.c.b.
  • Page 50 SHORT SPARE PARTS LIST Figure 22 .1 - 50 -...
  • Page 52 *1796225162* 17962.2516.2 1718 52A4 Biasi UK Ltd Commercial Road Leamore Enterprise Park WALSALL WS2 7NQ Sales Tel. 01922 714600 Tech. Service Tel. 01922 714636 www.biasi.co.uk...

This manual is also suitable for:

Advance plus 30c erpAdvance plus 35c erpAdvance plus 25s erpAdvance plus 30s erp

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