Baxi Potterton Gold HE A Range manual System Details, Information, Central Heating Circuit, Bypass

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6.0System Details

6.1Information

1.The Potterton Gold Combi HE A Condensing Combination Boiler is a ‘Water Byelaws Scheme - Approved Product’.

To comply with the Water Byelaws your attention is drawn to the following installation requirements and notes (IRN).

a) IRN 001 - See text of entry for installation

	requirements and notes.
b) IRN 302 -	Byelaw 14.

2.Reference to the WRc publications, ‘Water fittings and materials directory’ and ‘Water supply byelaws guide’ give full details of byelaws and the IRNs.

6.2Central Heating Circuit

1.The appliance is suitable for fully pumped SEALED SYSTEMS ONLY.

Treatment of Water Circulating Systems

•All recirculatory water systems will be subject to corrosion unless an appropriate water treatment is applied. This means that the efficiency of the system will deteriorate as corrosion sludge accumulates within the system, risking damage to pump and valves, boiler noise and circulation problems.

•When fitting new systems flux will be evident within the system, which can lead to damage of system components.

•All systems must be thoroughly drained and flushed out. Using, for example Betz-Dearborn Sentinel X300 or X400 or Fernox Superfloc Universal Cleanser. They should be used following the flushing agent manufacturer’s instructions.

•System additives - corrosion inhibitors and flushing agents/descalers should comply to BS7593 requirements, e.g. Betz-Dearborn Sentinel X100 and Fernox-Copal which should be used following the inhibitor manufacturer’s instructions.

Failure to flush and add inhibitor to the system will invalidate the appliance warranty.

•It is important to check the inhibitor concentration after installation, system modification and at every service in accordance with the manufacturer’s instructions. (Test kits are available from inhibitor stockists.)

•For information or advice regarding any of the above contact Technical Enquiries.

6.3Bypass

1.The boiler is fitted with an automatic integral bypass.

6.4System Control

1.A 24 hour electro - mechanical timer is supplied fitted to the boiler.

2.Further external controls (e.g. room thermostat) should be fitted to optimise the economical operation of the boiler.

12© Baxi Heating UK Ltd 2008

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Contents Installation & Service Instructions Natural Gas BS-EN ISO 9001 Accredited CompanyInstaller Notification Guidelines Scheme Members onlyImportant Installation, Commissioning, Service & Repair LegislationCodes of Practice refer to the most recent version Safe Manual Handling GeneralPreparation TechniqueContents Contents of Pack IntroductionDescription General Layout LayoutFrost Protection Mode Appliance OperationPump Protection Technical Data Gold Combi 24, 28 & 33 HE aDimensions and Fixings OrientationFlue Ø 100mm Tap Rail 32.5 mm Condensate Drain 65 mm 22mm 15mmSystem Details InformationCentral 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 LocationClearances Figs Site Requirement Ventilation of CompartmentsGas Supply Electrical SupplyCondensate Drain Flue Flue terminal guardFlue Options Horizontal FluesHorizontal Flue Systems This bend is equivalent to 1 metreVertical Flues Twin Pipe Twin & Vertical Flue SystemsMetre for each 91.5 bend Metre for each 135 bend This bend is equivalent to 1 metreFlue Accessories Key Accessory Size Code No5111079 Flue Duct Adaptor Air duct adaptorFor Twin Flue Systems fit the adaptors as follows Flue Dimensions For Roof TerminalsFlue Trim Flue Deflector FigPlume Displacement Plume Displacement Kit FigMetres Ring Adaptor Additional Accessories Elbow 5121369 Elbow Pair 5121370 28/33Determining Permissible Lengths ExampleShown in . Complete the installation of the 60Ø General Fitting Notes30mm Exhaust, securing in the bracketsPlume Outlet Elbow Installation Unpacking & Initial PreparationFlushing Loop and valves must be connected as shown in the diagram a Fitting the Filling LoopDouble Check Valve Stop Valve Temporary Filling Loop Hose Fitting Cold Inlet Stop ValveFitting The Boiler Fitting the Pressure Relief Discharge Pipe FigCondensate Drain see section Tighten all the connectionsFitting The Flue Wall Thickness WasteFlue Elbow Ensure Elbow is fully Engaged into BoilerInner Flue Support Bracket Ensure Flue is fully Engaged into Flue ElbowEnsure Extension is Fully engaged into Boiler Adaptor Making The Electrical Connections Preliminary Electrical ChecksTerminal Block Cover Cable ClampSelector Switch Display CommissioningCommissioning the Boiler Heat Exchanger Automatic Air Vent Screw PumpTemperature Control CheckingSetting the Timer Completion CompletionCase Front Panel Facia Panel Servicing 13 .1 Annual ServicingAnnual Servicing BurnerViewing Window Changing Components Igniter FigSpark and Sensing Electrodes Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorBurner Fig Insulation FigExtension Piece Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor FigHeat Exchanger Automatic Air Vent Fig Pump Head Only FigPump Complete Fig Automatic Air Vent FigPressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Figs Plate Heat Exchanger FigSelector Switch Fig 14.20 P.C.B. FigCompletely undo the screws securing the control box Pin FigGas Valve Fig Expansion Vessel FigVenturi Inlet Pipe Temperature Control Selector Switch Display Combustion CheckChecking the CO2 Illustrated Wiring Diagram ElectricalShort Parts List Short Parts ListKey Description Manufacturers Fault Finding Initial Fault Finding ChecksError Codes Error 133 flashing Reset position for 5 secondsDisplay illuminates Pump runsError 110 flashing Domestic Hot Water Follow operational sequenceTurn Domestic Hot Water Open DHW tap fullyPCB X3 connector terminals 3 Switch terminalFan jammed or faulty winding Replace PCB Is there 230V at Main terminals L and N Main terminal fuseGas at burner Replace gas valveTerminals 1 Ensure that the Hall Effect Sensor is in positionReplace safety thermostat Replace PCB Is there 230V atReplace heat exchanger GAS Boiler Commissioning Checklist Service Interval Record Brooks House, Coventry Road, Warwick. CV34 4LL UK Comp No 5116282 Iss 7 4/08