Baxi Potterton Gold HE A Range manual Fan Fig, Venturi Fig, Injector Fig

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Fig. 83

Burner

Gasket

Venturi

Injector

Cover

Gas Inlet Pipe

Gas Inlet

Fan

Venturi

Injector

Collector

Fig. 82

Fig. 84

When fitting the venturi ensure that the arrow is pointing forward

14.0Changing Components

14.3Fan (Fig. 83)

1.Undo the nut on the gas inlet pipe to the venturi (Fig. 83) and pull the sensing pipe off the fan.

2.Disconnect the electrode leads, noting their position and disconnect the fan electrical plugs.

3.Undo the screws securing the collector to the cover (33 models) or extension piece (24 & 28 models).

4.Remove the collector and fan assembly, being careful to retain the injector in the venturi.

5.Undo the screws securing the fan to the venturi and fit the new fan, replacing the seal if necessary.

6.Examine the burner gasket and replace if necessary.

7.Reassemble in reverse order, ensuring that the injector is in place and the sensing pipe is connected to the fan.

14.4Venturi (Fig. 82)

1.Remove the collector and fan assembly as described in section 14.3.

2.Extract the injector from the venturi.

3.Undo the screws securing the fan to the venturi and the venturi to the collector.

IMPORTANT: When fitting the new venturi, ensure the arrows on it’s base point into the collector (Fig. 84).

4.Examine the seals and burner gasket, replace if necessary.

5.Reassemble in reverse order, ensuring that the injector is in place.

14.5Injector (Fig. 82)

1.Remove the collector and fan assembly as described in section 14.3.

2.Extract and replace the injector and reassemble in reverse order.

© Baxi Heating UK Ltd 2008

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Contents Installation & Service Instructions BS-EN ISO 9001 Accredited Company Natural GasScheme Members only Installer Notification GuidelinesCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation General Safe Manual HandlingPreparation TechniqueContents Description Contents of PackIntroduction Layout General LayoutPump Protection Frost Protection ModeAppliance Operation Gold Combi 24, 28 & 33 HE a Technical DataOrientation Dimensions and FixingsFlue Ø 100mm Tap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mmInformation System DetailsCentral Heating Circuit BypassPressure Relief Valve Fig System Filling and Pressurising FigExpansion Vessel Central Heating only Hard Water Areas Domestic Hot Water Circuit FigShowers Clearances Figs Site RequirementsLocation Ventilation of Compartments Site RequirementGas Supply Electrical SupplyCondensate Drain Flue terminal guard FlueHorizontal Flues Flue OptionsHorizontal Flue Systems This bend is equivalent to 1 metreTwin & Vertical Flue Systems Vertical Flues Twin PipeMetre for each 91.5 bend Metre for each 135 bend This bend is equivalent to 1 metre5111079 Flue AccessoriesKey Accessory Size Code No For Twin Flue Systems fit the adaptors as follows Flue Duct AdaptorAir duct adaptor For Roof Terminals Flue DimensionsFlue Trim Flue Deflector FigMetres Ring Adaptor Plume DisplacementPlume Displacement Kit Fig 28/33 Additional Accessories Elbow 5121369 Elbow Pair 5121370Determining Permissible Lengths ExampleGeneral Fitting Notes Shown in . Complete the installation of the 60Ø30mm Exhaust, securing in the bracketsPlume Outlet Elbow Flushing InstallationUnpacking & Initial Preparation Fitting the Filling Loop Loop and valves must be connected as shown in the diagram aDouble Check Valve Stop Valve Temporary Filling Loop Hose Fitting Cold Inlet Stop ValveFitting the Pressure Relief Discharge Pipe Fig Fitting The BoilerCondensate Drain see section Tighten all the connectionsWall Thickness Waste Fitting The FlueFlue Elbow Ensure Elbow is fully Engaged into BoilerEnsure Extension is Fully engaged into Boiler Adaptor Inner Flue Support BracketEnsure Flue is fully Engaged into Flue Elbow Preliminary Electrical Checks Making The Electrical ConnectionsTerminal Block Cover Cable ClampCommissioning Selector Switch DisplayCommissioning the Boiler Heat Exchanger Automatic Air Vent Screw PumpChecking Temperature ControlSetting the Timer Case Front Panel Facia Panel CompletionCompletion 13 .1 Annual Servicing ServicingViewing Window Annual ServicingBurner Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorExtension Piece Burner FigInsulation Fig Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigPump Head Only Fig Heat Exchanger Automatic Air Vent FigPump Complete Fig Automatic Air Vent FigHall Effect Sensor Fig Pressure Gauge FigsPlate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Figs14.20 P.C.B. Fig Selector Switch FigCompletely undo the screws securing the control box Pin FigVenturi Inlet Pipe Gas Valve FigExpansion Vessel Fig Checking the CO2 Temperature Control Selector Switch DisplayCombustion Check Electrical Illustrated Wiring DiagramKey Description Manufacturers Short Parts ListShort Parts List Error Codes Fault FindingInitial Fault Finding Checks Reset position for 5 seconds Error 133 flashingDisplay illuminates Pump runsDomestic Hot Water Follow operational sequence Error 110 flashingTurn Domestic Hot Water Open DHW tap fullySwitch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Is there 230V at Main terminals L and N Main terminal fuseReplace gas valve Gas at burnerTerminals 1 Ensure that the Hall Effect Sensor is in positionReplace heat exchanger Replace safety thermostatReplace PCB Is there 230V at GAS Boiler Commissioning Checklist Service Interval Record UK Comp No 5116282 Iss 7 4/08 Brooks House, Coventry Road, Warwick. CV34 4LL