Baxi Potterton 47-393-41 manual Gas Valve Fig, Expansion Vessel Fig, Throttle Adjustment Screw

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Venturi Inlet

Pipe

Gas Valve

Sensing Pipe

Power Lead

Earth Lead

Gas Feed

 

Elbow

Fig. 99

Throttle

Adjustment Screw

14.0Changing Components

14.24Gas Valve (Fig. 99)

IMPORTANT: After replacing the valve the CO2 must be checked and adjusted as detailed in Section 15.0 Setting the Gas Valve. Only change the valve if a suitable calibrated combustion analyser is available, operated by a competent person - see section 13.1.

1.Turn the gas cock off and undo the nut on the gas feed elbow under the boiler.

2.Remove the screws securing the gas valve to the boiler bottom panel.

3.Pull off the power lead, earth lead and sensing pipe.

4.Undo the nut on the gas pipe at the gas/air inlet and the gas valve. Remove the pipe, taking care not to lose the sealing washers. Remove the valve.

5.Remove the outlet adaptor and inlet pipe and transfer them to the new valve. Examine the ‘O’ ring seals, replace if necessary.

6.Reassemble in reverse order., ensuring that all seals are in place and the injector is fitted.

NOTE: To assist the boiler to light prior to final setting, use a suitable hexagon key to wind out the throttle adjustment screw until it is flush with the valve body, then turn the screw 4 full turns clockwise (Fig. 100). If the boiler will not light, or the correct CO2 cannot be achieved contact the ‘heateam’ technical helpline.

Fig. 100

Retaining Bracket

Expansion Vessel

Lock Nut

Boiler Chassis

Fig. 101

14.25Expansion Vessel (Fig. 101)

1.Drain the boiler primary circuit and undo the nut on the vessel connection pipe.

2.Remove the screw retaining the air inlet pipe, and swing the pipe to one side.

3.Undo and remove the locknut securing the vessel spigot to the boiler lower panel.

4.Remove the bracket and vessel from the boiler.

5.Locate the retaining bracket on the upper flange of the new vessel and fit to the boiler.

6.Examine the sealing washer, replacing if necessary, and reassemble in reverse order.

50© Baxi Heating UK Ltd 2012

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Contents Installation & Service Instructions Natural Gas Potterton TitaniumInstaller Notification Guidelines Scheme Members onlyCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Preparation Safe Manual HandlingGeneral TechniqueContents Description Contents of PackIntroduction Layout Domestic Hot Water Mode Light DisplayGeneral Layout Expansion Vessel Automatic Air VentFrost Protection Mode Central Heating Mode FigDomestic Hot Water Mode Fig Appliance OperationTechnical Data Titanium 24, 28, 33Tap Rail 32.5 mm Condensate Drain 65 mm Dimensions and FixingsOrientation 22mm 15mmCentral Heating Circuit System DetailsInformation BypassPressure Relief Valve Fig System Filling and Pressurising FigExpansion Vessel Central Heating only Hard Water Areas Domestic Hot Water Circuit FigShowers At Least 1.5 7.2 Clearances Figs Site RequirementsLocation Gas Supply Site RequirementVentilation of Compartments Electrical SupplyCondensate Drain 50mm per 500mm minBoiler External runs & those RunMinimum fall InsulationFlue Horizontal Flue Systems Each fitting to aid assemblyFlue Options Horizontal Flues120mm Min Vertical FluesTwin & Vertical Flue Systems ApartTelescopic Internal Flue Kit Flue AccessoriesKey Accessory Size Code No Air Duct Connection Flue Duct Connection Boiler Adaptor Twin Flue Duct AdaptorTwin Flue Connection Flue Trim Flue DimensionsFor Roof Terminals Terminal Guard FigElbow/Plume Outlet Assembly Plume DisplacementPlume Displacement Kit Fig Ring BracketExample 28/33/40Determining Permissible Lengths Example Flue Lengths OKGeneral Fitting Notes 30mmUsing a suitable bit e.g mm, drill through Elbow to allow the flue to be installed as shown60Ø extension piece. It must be secured using two Extension and outlet. Secure using two of the screwsFlushing InstallationUnpacking & Initial Preparation After considering the site requirementsFitting the Filling Loop Kit Condensate Drain see section Fitting The BoilerFitting the Pressure Relief Discharge Pipe Fig Ensure Elbow is fully engaged into Boiler Adaptor Fitting The FlueWall Thickness Flue Elbow Wall Thickness Waste FlueEnsure Extension is fully engaged into Boiler Adaptor Inner Flue Support Bracket25mm Extension Cut End Making The Electrical Connections Preliminary Electrical ChecksCommissioning the Boiler Selector Switch DisplayCommissioning Screw Pump Automatic Air VentPressure Setting the Timer Case Front Panel Facia Panel CompletionCompletion Annual Servicing Inspection Servicing13 .1 Annual Servicing Viewing Window 10 ±1Burner Sensing Electrode Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Injector Fig Fan FigVenturi Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Gasket Extension Piece Burner FigInsulation Fig DHW Temperature Sensor NTC Fig Central Heating Temperature Sensor NTC FigSafety Thermostat Fig Flue/Heat Exchanger Thermostat Sensor FigAutomatic Air Vent Fig Pump Head Only FigPump Complete Fig Pressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Fig Plate Heat Exchanger FigSelector Switch Fig 14.22 P.C.B. FigExpansion Vessel Fig Throttle Adjustment ScrewGas Valve Fig Flue Adaptor Test Point Plug Analyser Probe Setting the Gas ValveSetting the Gas Valve CO2 check ThrottleIllustrated Wiring Diagram Electrical306 Short Parts ListShort Parts List 302Error Codes Fault FindingInitial Fault Finding Checks Reset position for 5 seconds Error 133 flashingGo to section ‘A’ Turn the selector switch to Pump runsTurn Domestic Hot Water Turn selector switch toError 133 flashing Go to section ‘I’ Open DHW tap fullyFan jammed or faulty winding Replace PCB PCB X3 connector terminals 3Switch terminal Replace waterGas at burner Check wiring Viewing WindowReplace sensor or PCB E28 Replace gas valveReplace sensor Replace safety thermostatReplace PCB Is there 230V at Page Page GAS Boiler System Commissioning Checklist Service Record Potterton

47-393-40, 47-393-41, 47-393-39, 47-393-42 specifications

The Baxi Potterton 47-393-42, 47-393-39, 47-393-41, and 47-393-40 are models of high-efficiency gas boilers designed for residential heating. These models are well-known for their reliability, advanced technology, and user-friendly features, making them a popular choice among homeowners looking to improve their heating systems.

One of the standout features of these models is their energy efficiency. Each unit is engineered to comply with stringent energy-saving regulations, significantly reducing utility bills while maintaining optimal heating performance. They are rated with impressive efficiency ratings, which can lead to long-term savings and a reduced carbon footprint.

The Baxi Potterton range employs a heat exchanger system designed to maximize heat transfer and minimize energy waste. This sophisticated technology ensures that the boiler operates at peak efficiency, providing ample heating for homes even in the coldest months. The use of a durable, high-quality heat exchanger material contributes to the longevity of the unit, reducing the need for frequent repairs or replacements.

Ease of use is another hallmark of the 47-393 series. With an intuitive digital display, users can effortlessly monitor and adjust settings as required. The controls are straightforward, allowing for quick temperature adjustments, system diagnostics, and alerts, creating a hassle-free experience for homeowners.

Safety features are inherent in these models, including built-in safeguards against overheating and pressure fluctuations. The automatic shut-off mechanism ensures that the boiler operates within safe parameters, providing peace of mind to users.

Furthermore, maintenance is simplified with the easy access design. The accessible components make it straightforward for service technicians to perform routine checks and repairs. Regular maintenance is essential for sustaining high performance and extending the lifespan of the boiler.

In conclusion, the Baxi Potterton 47-393-42, 47-393-39, 47-393-41, and 47-393-40 models represent a blend of efficiency, safety, and convenience. Their advanced technologies and features not only enhance the user experience but also contribute to more sustainable heating solutions for homes. Investing in one of these advanced boilers ensures reliable performance, lower energy costs, and a commitment to environmental responsibility.
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