Baxi Potterton Gold FSB 30 HE manual Spark and Sensing Electrodes Fig

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Air Box Door Panel

Sensing

Spark Earth

Fig. 51

Injector Pipe

Screw

Protection

Sensor

Electrical Connections

Fig. 52

Combustion

Box Door

Injector

Opening

Gasket

Venturi

Fig. 50

Fan

Electrical Connection

15.0Changing Components

The fan and venturi, gas valve, injector pipe, condensate trap, fan protection sensor, spark and sensing electrodes can be accessed and changed on the removal of the airbox door panel.

1.Remove the airbox door panel by loosening the four 1/4 turn screws (Fig. 50).

15.7Spark and Sensing Electrodes (Fig. 51)

1. Disconnect all three leads from tabs.

Spark

-

Opaque cable

Earth

-

Green/Yellow cable

Sensing

-

White cable

2.Remove the two screws securing each of the electrodes to the combustion box door and remove the electrodes.

3.Fit the new electrodes (and new gasket, as required) and reassemble in reverse order.

15.8Fan (Fig. 52)

WARNING: The PCB Control and Fan Assembly are 325 Vdc. Isolate system controls before access.

1.Loosen the screw holding the injector pipe into the venturi.

2.Remove the electrical connections to the fan and protection sensor on the fan.

3.Remove the wing nuts securing the fan to the base of the combustion box.

4.Lower the fan and remove.

5.If changing the fan, remove the screws securing the venturi and fan protection sensor bracket, noting the positions of the injector opening and sensor bracket, fix them to the new fan.

6.Fit the new fan and reassemble in reverse order.

The injector pipe, condensate trap and gas valve can be changed after the removal of

the fan.

© Baxi Heating UK Ltd 2011

Wing Nuts

45

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Contents
FSB 30 HE Potterton Gold FSB 30 HE No 592 Natural GasScheme Members only Installer Notification GuidelinesGas Safety Installation & Use Regulations Important Installation, Commissioning, Service & RepairLegislation Codes of Practice, most recent version should be usedContents Introduction DescriptionImportant Information Position of Optional Integral Timer Wiring Flow Temperature Thermistor RedGeneral Layout Layout Figs , 4, 5Boiler Operation Boiler OperationAll TRVs Shut Down ? Minute Anti-cycle Technical Data CAT I 2HIpxx Dimensions and Fixings System Details Water Circulating SystemsTreatment of Water Circulating Systems Low Head Installation PipeworkAir Vents System Controls & Wiring Sealed Systems Fig Site Requirements LocationCompartment Gas Supply Clearances Figs &16Electrical Supply 5mm Min 500mm Min For Servicing Purposes 390mmCondensate Disposal Condensate Drain GeneralSink Site Requirement± 10 from vertical Blockage or restriction of the pipe into the drainMIN FlueHorizontal Flue System Examples Flue OptionsHorizontal Flue Systems This bend is equivalent to 0.5 metreTwin & Vertical Flue Systems Vertical Flue System Examples Twin PipeTotal equivalent length 17.2 + 34.4 = 51.6 metresCDS Flue AccessoriesFlue Group B Flue Group PFor Vertical Flues For Vertical Flue Systems For Twin Flue SystemsFor Twin Flues For Roof Terminals Flue DimensionsTerminal Guard Fig Flue Deflector aPlume Displacement Kit P.D.K Plume DisplacementDetermining Permissible Lengths P.D.K General Fitting Notes P.D.K Min metres Min .3 metresThis section of the flue Must be horizontal Fig. H Installation Flue Inner Flue Support Bracket Fitting the Standard FluePoints Inner Flue Support Bracket Flue Elbow Gasket Flue TrimConnection Making the Condensate DrainMaking The Electrical Connections Cable Clamp Way Terminal BlockIntegral Programmer Electrical Schematic Wiring DiagramGreen/Yellow Fuse 3.15 ATPCB Illustrated Wiring DiagramCommissioning the Boiler Commissioning the BoilerPriming the Condensate Pump Check the Operational Working Gas Inlet Pressure Completion 13.2 ‘Benchmark’ ChecklistFitting The Case Panels & Facia HandoverAnnual Servicing Servicing the BoilerAir Box Door Panel Spark Sleeve Annual Servicing InspectionEarth Combustion Box Door Panel InsulationCracks/damage. Clean with a soft brush Pipe may be removed to increase accessLock Nut Service Drain Plug Central Insulation Panel To it FigFlow Temperature Thermistor and Safety Thermostat Fig Changing ComponentsChanging Components & Preparation Clip Condensate Pump Complete aDrain the boiler see .1 paragraph 2 Check operation of the pump See SectionChanging Components Spark and Sensing Electrodes Fig Gas Valve Fig Injector Pipe FigCondensate Trap Fig Securing Nut Sensor Leads Condensate Trap Lock NutHeat Exchanger Manifold Assembly Heat ExchangerCombustion Box Door Panel Burner Support Bracket Burner Securing Screws Short Parts List Short Parts ListKey Description Fault Finding 240V at B ? 240V at a ?240V at C ? 240V at D ?Viewed from Wire Entry end Replace Flow Switch Wires from inline Connector to PCB faultySystem full of water ? Pump running ?Rectify wiring Wiring from PCBReplace PCB Way Connector Lead from PCB to Gas Valve faulty Is there Gas at gas valve inlet ?Lights On Off Replace Stat Replace fan Lights Rectify wiring Viewed from Wire Entry end ‘C’ ‘D’ ‘B’ ‘A’YES Condensing Boilers only Service Record Brooks House, Coventry Road, Warwick. CV34 4LL Comp No 6/11 Potterton