Manuals / Baxi Potterton / Household Appliance / Boiler

Baxi Potterton 47-393-39 Flue/Heat Exchanger Thermostat Sensor Fig, Water Pressure Sensor Fig

Models: 47-393-40 47-393-41 47-393-39 47-393-42

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Electrical

PlugFlue/Heat Exchanger

Thermostat Sensor

Fig. 83

Flow Pipe

Central Heating

Temperature Sensor

14.0Changing Components

14.8Flue/Heat Exchanger Thermostat Sensor (Fig. 83)

1.Ease the retaining tab on the sensor away and disconnect the electrical plug.

2.Turn the sensor 90° anticlockwise to remove - it is a bayonet connection.

3.Reassemble in reverse order.

14.9Water Pressure Sensor (Fig. 85)

1.Drain the primary circuit.

2.Disconnect the two wires from the sensor.

3.Undo the nut on the flow pipe securing and sealing the sensor.

4.Remove the sensor, examine the sealing washer, replacing if necessary.

5.Reassemble in reverse order. The component is not polarised - either wire will fit each terminal.

14.10Central Heating Temperature Sensor (NTC) (Fig. 84)

1.Ease the retaining tab on the sensor away and disconnect the electrical plug.

2.Unscrew the sensor from it’s pocket and reassemble in reverse order. The plug will only fit one way.

14.11Safety Thermostat (Fig. 85)

Fig. 84

Pressure Sensor

Fig. 85

Safety Thermostat

Plate Heat

Exchanger

DHW Temperature

Sensor

1.Pull the plug off the thermostat.

2.Remove the screws securing the thermostat to the mounting plate on the flow pipe.

3.Reassemble in reverse order, ensuring that the plug is pushed fully on.

14.12DHW Temperature Sensor (NTC) (Fig. 85)

1.Turn off the mains cold water supply tap and draw off the residual domestic hot water.

2.Ease the retaining tab on the sensor away and disconnect the electrical plug.

3.Unscrew the sensor from the plate heat exchanger manifold. Examine the sealing washer,replacing if necessary.

4.Reassemble in reverse order. The plug will only fit one way.

© Baxi Heating UK Ltd 2012

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Baxi Potterton 47-393-39 manual Flue/Heat Exchanger Thermostat Sensor Fig, Water Pressure Sensor Fig, Safety Thermostat Fig

Contents

Installation & Service Instructions Potterton Titanium Natural GasScheme Members only Installer Notification GuidelinesImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version General Safe Manual HandlingPreparation TechniqueContents Contents of Pack IntroductionDescription General Layout Domestic Hot Water Mode Light DisplayLayout Expansion Vessel Automatic Air VentDomestic Hot Water Mode Fig Central Heating Mode FigFrost Protection Mode Appliance OperationTitanium 24, 28, 33 Technical DataOrientation Dimensions and FixingsTap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mmInformation System DetailsCentral Heating Circuit BypassSystem Filling and Pressurising Fig Expansion Vessel Central Heating onlyPressure Relief Valve Fig Domestic Hot Water Circuit Fig ShowersHard Water Areas Site Requirements LocationAt Least 1.5 7.2 Clearances Figs Ventilation of Compartments Site RequirementGas Supply Electrical SupplyCondensate Drain 500mm min 50mm perMinimum fall RunBoiler External runs & those InsulationFlue Flue Options Each fitting to aid assemblyHorizontal Flue Systems Horizontal FluesTwin & Vertical Flue Systems Vertical Flues120mm Min ApartFlue Accessories Key Accessory Size Code NoTelescopic Internal Flue Kit Twin Flue Duct Adaptor Twin Flue ConnectionAir Duct Connection Flue Duct Connection Boiler Adaptor For Roof Terminals Flue DimensionsFlue Trim Terminal Guard FigPlume Displacement Kit Fig Plume DisplacementElbow/Plume Outlet Assembly Ring BracketDetermining Permissible Lengths 28/33/40Example Example Flue Lengths OK30mm General Fitting Notes60Ø extension piece. It must be secured using two Elbow to allow the flue to be installed as shownUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screwsUnpacking & Initial Preparation InstallationFlushing After considering the site requirementsFitting the Filling Loop Kit Fitting The Boiler Fitting the Pressure Relief Discharge Pipe FigCondensate Drain see section Wall Thickness Flue Elbow Fitting The FlueEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste FlueInner Flue Support Bracket 25mm Extension Cut EndEnsure Extension is fully engaged into Boiler Adaptor Preliminary Electrical Checks Making The Electrical ConnectionsCommissioning Selector Switch DisplayCommissioning the Boiler Screw Pump Automatic Air VentPressure Setting the Timer Completion CompletionCase Front Panel Facia Panel Servicing 13 .1 Annual ServicingAnnual Servicing Inspection 10 ±1 Burner Sensing ElectrodeViewing Window Changing Components Igniter FigSpark and Sensing Electrodes Fig Venturi Fig Fan FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Fig Insulation FigBurner Gasket Extension Piece Safety Thermostat Fig Central Heating Temperature Sensor NTC FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigPump Head Only Fig Pump Complete FigAutomatic Air Vent Fig Hall Effect Sensor Fig Pressure Gauge FigsPlate Heat Exchanger Fig Diverter Valve Motor Unit & Assembly Fig14.22 P.C.B. Fig Selector Switch FigThrottle Adjustment Screw Gas Valve FigExpansion Vessel Fig Setting the Gas Valve CO2 check Setting the Gas ValveFlue Adaptor Test Point Plug Analyser Probe ThrottleElectrical Illustrated Wiring DiagramShort Parts List Short Parts List306 302Fault Finding Initial Fault Finding ChecksError Codes Go to section ‘A’ Turn the selector switch to Error 133 flashingReset position for 5 seconds Pump runsError 133 flashing Go to section ‘I’ Turn selector switch toTurn Domestic Hot Water Open DHW tap fullySwitch terminal PCB X3 connector terminals 3Fan jammed or faulty winding Replace PCB Replace waterReplace sensor or PCB E28 Check wiring Viewing WindowGas at burner Replace gas valveReplace safety thermostat Replace PCB Is there 230V atReplace sensor Page Page GAS Boiler System Commissioning Checklist Service Record Potterton