Baxi Potterton Gold HE A Range Changing Components, Igniter Fig, Spark and Sensing Electrodes Fig

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Bracket

Igniter

Igniter Feed

Plug

Electrode

Leads

Fig. 80

Spark

Electrode

Electrode

Leads

Sensing

Electrode

Fig. 81

14.0 Changing Components

IMPORTANT: When changing components ensure that both the gas and electrical supplies to the boiler are isolated before any work is started. When the component has been changed turn the selector switch fully anticlockwise against the spring pressure to the reset position and hold for 5 seconds to reset the boiler before recommissioning.

See Section 13.1 “Annual Servicing” for removal of case panel, door etc.

14.1Igniter (Fig. 80)

1.Disconnect the igniter feed plug and the electrode leads, noting their positions.

2.Undo the screw securing the bracket to the boiler.

3.Remove the igniter and transfer the bracket to the new component.

4.Reassemble in reverse order.

14.2Spark and Sensing Electrodes (Fig. 81)

1.Disconnect the electrode leads, noting their positions.

2.Remove the retaining screws securing each of the electrodes to the combustion box cover and remove the electrodes.

3.Check the condition of the sealing gasket and replace if necessary. Reassemble in reverse order.

40© Baxi Heating UK Ltd 2008

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Contents Installation & Service Instructions Natural Gas BS-EN ISO 9001 Accredited CompanyInstaller Notification Guidelines Scheme Members onlyLegislation Important Installation, Commissioning, Service & RepairCodes of Practice refer to the most recent version Safe Manual Handling GeneralPreparation TechniqueContents Introduction Contents of PackDescription General Layout LayoutAppliance Operation Frost Protection ModePump Protection Technical Data Gold Combi 24, 28 & 33 HE aDimensions and Fixings OrientationFlue Ø 100mm Tap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mmSystem Details InformationCentral Heating Circuit BypassExpansion Vessel Central Heating only System Filling and Pressurising FigPressure Relief Valve Fig Showers Domestic Hot Water Circuit FigHard Water Areas Location Site RequirementsClearances Figs Site Requirement Ventilation of CompartmentsGas Supply Electrical SupplyCondensate Drain Flue Flue terminal guardFlue Options Horizontal FluesHorizontal Flue Systems This bend is equivalent to 1 metreVertical Flues Twin Pipe Twin & Vertical Flue SystemsMetre for each 91.5 bend Metre for each 135 bend This bend is equivalent to 1 metreKey Accessory Size Code No Flue Accessories5111079 Air duct adaptor Flue Duct AdaptorFor Twin Flue Systems fit the adaptors as follows Flue Dimensions For Roof TerminalsFlue Trim Flue Deflector FigPlume Displacement Kit Fig Plume DisplacementMetres Ring Adaptor Additional Accessories Elbow 5121369 Elbow Pair 5121370 28/33Determining Permissible Lengths ExampleShown in . Complete the installation of the 60Ø General Fitting Notes30mm Exhaust, securing in the bracketsPlume Outlet Elbow Unpacking & Initial Preparation InstallationFlushing Loop and valves must be connected as shown in the diagram a Fitting the Filling LoopDouble Check Valve Stop Valve Temporary Filling Loop Hose Fitting Cold Inlet Stop ValveFitting The Boiler Fitting the Pressure Relief Discharge Pipe FigCondensate Drain see section Tighten all the connectionsFitting The Flue Wall Thickness WasteFlue Elbow Ensure Elbow is fully Engaged into BoilerEnsure Flue is fully Engaged into Flue Elbow Inner Flue Support BracketEnsure Extension is Fully engaged into Boiler Adaptor Making The Electrical Connections Preliminary Electrical ChecksTerminal Block Cover Cable ClampSelector Switch Display CommissioningCommissioning the Boiler Heat Exchanger Automatic Air Vent Screw PumpTemperature Control CheckingSetting the Timer Completion CompletionCase Front Panel Facia Panel Servicing 13 .1 Annual ServicingBurner Annual ServicingViewing Window Igniter Fig Changing ComponentsSpark and Sensing Electrodes Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorInsulation Fig Burner FigExtension Piece Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigHeat Exchanger Automatic Air Vent Fig Pump Head Only FigPump Complete Fig Automatic Air Vent FigPressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Figs Plate Heat Exchanger FigSelector Switch Fig 14.20 P.C.B. FigCompletely undo the screws securing the control box Pin FigExpansion Vessel Fig Gas Valve FigVenturi Inlet Pipe Combustion Check Temperature Control Selector Switch DisplayChecking the CO2 Illustrated Wiring Diagram ElectricalShort Parts List Short Parts ListKey Description Manufacturers Initial Fault Finding Checks Fault FindingError Codes Error 133 flashing Reset position for 5 secondsDisplay illuminates Pump runsError 110 flashing Domestic Hot Water Follow operational sequenceTurn Domestic Hot Water Open DHW tap fullyPCB X3 connector terminals 3 Switch terminalFan jammed or faulty winding Replace PCB Is there 230V at Main terminals L and N Main terminal fuseGas at burner Replace gas valveTerminals 1 Ensure that the Hall Effect Sensor is in positionReplace PCB Is there 230V at Replace safety thermostatReplace heat exchanger GAS Boiler Commissioning Checklist Service Interval Record Brooks House, Coventry Road, Warwick. CV34 4LL UK Comp No 5116282 Iss 7 4/08