Baxi Potterton BBU 15 HE manual Changing Components, Spark Generator Fig, Electrode Assembly Fig

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Fig. 45

Spark Generator

Plug

Fig. 46

PCBControl Box removed for clarity

Sealing Gasket

Electrode

Fig. 47

Condensate Pump

Locking Clip

Fig. 48

© Baxi Heating UK Ltd 2009

10.0Changing Components

10.1Changing Components

1.To change any components on the back boiler it is necessary to remove the firefront.

2.Refer to the Installer Guide that accompanies the firefront for details of removal.

3.Ensure that the boiler is cool and that the electrical and gas supplies are isolated.

4.After changing any components carry out gas soundness checks.

5.Undo &remove the flue sampling plug and washer. Remove the screws retaining the boiler front panel, and lift the panel away.

6.Remove the screw securing the PCB control box and swing the box to the right.

10.2Spark Generator (Fig. 46)

1.Note the position of the two leads on the spark generator and disconnect them. Also disconnect the earth wire and plug, and remove the screws securing the spark generator to the bracket.

2.Remove the spark generator. Replace in reverse order of dismantling, using the screws previously removed.

3.Ensure that the leads and plug are pushed fully on to their terminals.

10.3Electrode Assembly (Fig. 47)

1.Note the position of the two leads on the electrode assembly and disconnect them. Disconnect the in-line connection on the black wire and the earth wire.

2.Undo the securing screws and remove the electrode assembly and earth tag from the combustion box panel.

3.Replace in reverse order of dismantling, using the screws previously removed. Examine the sealing gasket and replace if necessary.

4.Ensure that the leads are pushed fully on to their terminals.

10.4Condensate Pump (Fig.48)

1.Note the position of the two leads and earth wire on the pump motor and disconnect them.

2.Cut and remove the transit cable tie. It is not necessary to replace this item.

3.Squeeze in the two locking clips and turn the pump anti-clockwise. Pull the condensate discharge pipe off its connection and remove the pump.

4.Replace in reverse order of dismantling. Examine the sealing ring and replace if necessary.

5.Ensure that the leads are pushed fully on to their terminals.

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Contents
Baxi Bermuda BBU 15 HE 0086 Scheme Members only Installer Notification GuidelinesCodes of Practice, most recent version should be used Important Installation, Commissioning, Service & RepairLegislation Safe Manual Handling Contents Description ContentsIntroduction Layout Fig General LayoutFlue Kit 10m & 12.5m a Bermuda HE Cbbu 15 HE Technical DataWater Circulating Systems System DetailsTreatment of Water Circulating Systems There is a drain cock supplied in the plumbing kitStorage Systems PipeworkSystem Controls Sealed Systems Figs , 7 Sealed Systems Builders Opening Fig Site RequirementsLocation Fireplace Opening & SurroundNo Horizontal Runs are Permitted FlueGas Supply Fig VentilationElectrical Supply Fig Electrical Connection Gas ConnectionCondensate Disposal Fig Condensate Drain GeneralCondensate Disposal Total volume of the sump is 1.5 litresCondensate Pump Operation From Boiler 500mm MinBoiler Internal Illustrated Wiring Diagram Boiler Internal WiringFlue System InstallationInitial Preparation Barb ‘C’ Clip Air Cowl Air Duct Collar Ribs Terminal Cap Water Connections Siting the BoilerGas Connection Electrical ConnectionCommissioning the Boiler Completion & CommissioningCompletion Test Point Annual Servicing Annual ServicingAnnual Servicing Inspection Changing Components Electrode Assembly FigChanging Components Spark Generator FigBurner Fig Fan FigSpark Generator Plug Electrode Fan Injector Burner Spark Generator Plug Gas Feed Pipe InjectorGas Valve Fig Injector Gas Valve Earth WireFloat Switches Fig Safety Thermostat FigPCB Fig NTC FigFlue Sampling Point Display Control Knobs Setting the Gas ValveSetting the Gas Valve CO2 check Error Codes Fault FindingInitial Fault Finding Checks Burner lights Press the Service Reset Error 110 flashingSwitch for 5 seconds Go to section ‘A’X2 connector, is 230V AC across Clean condensate drain systemTerminals 1 Voltage at PCB X2 connector is Spark gap and position Check wiringReplace flame sensing electrode Replace Safety ThermostatShort Parts List 13.0 Short Parts ListPage Page Page GAS Boiler System Commissioning Checklist Date Energy Efficiency Checklist completed? Service RecordSerial Number Date of Installation Warranty & ServiceInstaller Details name, address and contact numbers After Sales Service 0844 871