Baxi Potterton Gold HE A Range manual 13 .1 Annual Servicing

Page 38

Case Front Panel

Fig. 73

Facia Panel Securing Screws

Inner Door

13.0 Servicing

13 .1 Annual Servicing

1.For reasons of safety and economy, it is recommended that the boiler is serviced annually. Servicing must be performed by a competent person in accordance with B.S. 7967-4:2007.

If a suitably calibrated combustion analyser is available it may not be necessary to perform a full strip down of the appliance. Proceed as follows.

Check for/inspect:-

Evidence of leakage of products of combustion Water leaks

Heat stress

Deterioration such as corrosion

Visible condition of seals and joints

Flue system and ventilation

Condensate drain system

Operation at designed maximum heat input

If the above are satisfactory perform a combustion check The CO/CO2 ratio must be less than 0.004 and the CO2 should be 8.7% ± 0.2 (max. rate) and 8.4% ± 0.2 (min. rate). This can be adjusted - see Section 15.0 - if the readings are incorrect. When correct combustion readings cannot be achieved by adjustment a full strip down must be performed - see below. Carefully check items such as the burner, injector and heat exchanger for blockage or damage, rectifying as necessary. Re- check the combustion. Once satisfactory readings have been achieved and any other defects corrected complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication.

Where no suitable analyser is available a strip down service must be performed as described below.

2.After servicing, complete the relevant Service Interval Record section of the Benchmark Commissioning Checklist at the rear of this publication.

If a full strip-down is to be performed proceed as follows:-

3. Ensure that the boiler is cool.

4. Ensure that both the gas and electrical supplies to the

boiler are isolated.

Panel

Fig. 74

Sump

Fig. 75

5.

Slacken the screws securing the facia panel. Lift the

outercase panel so that its securing tabs are clear of the facia.

Remove the panel, allowing the facia to hinge down (Fig. 73).

6.

Remove the screws securing the inner door panel. Lift the

panel slightly to disengage it from the studs on top of the case

(Fig. 74).

7.

Unscrew the sump from the bottom of the condensate trap

assembly (Fig. 75).

8.

Remove any deposits from the sump and trap. Clean as

necessary and replace the sump.

38© 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 onlyCodes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Preparation Safe Manual HandlingGeneral TechniqueContents Description Contents of PackIntroduction General Layout LayoutPump Protection Frost Protection ModeAppliance Operation Technical Data Gold Combi 24, 28 & 33 HE aFlue Ø 100mm Tap 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 Clearances Figs Site RequirementsLocation Gas Supply Site RequirementVentilation of Compartments Electrical SupplyCondensate Drain Flue Flue terminal guardHorizontal Flue Systems Flue OptionsHorizontal Flues This bend is equivalent to 1 metreMetre for each 91.5 bend Vertical Flues Twin PipeTwin & Vertical Flue Systems 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 Flue Trim Flue DimensionsFor Roof Terminals Flue Deflector FigMetres Ring Adaptor Plume DisplacementPlume Displacement Kit Fig Determining Permissible Lengths Additional Accessories Elbow 5121369 Elbow Pair 512137028/33 Example30mm Shown in . Complete the installation of the 60ØGeneral Fitting Notes Exhaust, securing in the bracketsPlume Outlet Elbow Flushing InstallationUnpacking & Initial Preparation Double Check Valve Stop Valve Temporary Filling Loop Loop and valves must be connected as shown in the diagram aFitting the Filling Loop Hose Fitting Cold Inlet Stop ValveCondensate Drain see section Fitting The BoilerFitting the Pressure Relief Discharge Pipe Fig Tighten all the connectionsFlue Elbow Fitting The FlueWall Thickness Waste 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 Terminal Block Cover Making The Electrical ConnectionsPreliminary Electrical Checks Cable ClampCommissioning the Boiler Selector Switch DisplayCommissioning Heat Exchanger Automatic Air Vent Screw PumpTemperature Control CheckingSetting the Timer Case Front Panel Facia Panel CompletionCompletion Servicing 13 .1 Annual ServicingViewing Window Annual ServicingBurner Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Injector Fig Fan FigVenturi Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan CollectorExtension Piece Burner FigInsulation Fig DHW Temperature Sensor NTC Fig Central Heating Temperature Sensor NTC FigSafety Thermostat Fig Flue/Heat Exchanger Thermostat Sensor FigPump Complete Fig Heat Exchanger Automatic Air Vent FigPump Head Only Fig Automatic Air Vent FigPressure Gauge Figs Hall Effect Sensor FigDiverter Valve Motor Unit & Assembly Figs Plate Heat Exchanger FigCompletely undo the screws securing the control box Selector Switch Fig14.20 P.C.B. Fig Pin FigVenturi Inlet Pipe Gas Valve FigExpansion Vessel Fig Checking the CO2 Temperature Control Selector Switch DisplayCombustion Check Illustrated Wiring Diagram ElectricalKey Description Manufacturers Short Parts ListShort Parts List Error Codes Fault FindingInitial Fault Finding Checks Display illuminates Error 133 flashingReset position for 5 seconds Pump runsTurn Domestic Hot Water Error 110 flashingDomestic Hot Water Follow operational sequence Open DHW tap fullyFan jammed or faulty winding Replace PCB PCB X3 connector terminals 3Switch terminal Is there 230V at Main terminals L and N Main terminal fuseTerminals 1 Gas at burnerReplace gas valve 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 Brooks House, Coventry Road, Warwick. CV34 4LL UK Comp No 5116282 Iss 7 4/08
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