Burner Fig, Insulation Fig, Extension Piece | Potthof & Co 28kw

Cover

14.0 Changing Components

Extension Piece

(24 & 28 models)

Fig. 85

Spark

Electrode

Electrode

Leads

Burner

Gasket

Venturi

Collector

Heat

Exchanger

Rear

Insulation

Venturi

Cover

Insulation

Seal

Fig. 75

Collector

Sensing

Electrode

14.6Burner (Fig. 85)

1.Undo the screws securing the collector to the cover and venturi. (On 24 & 28 models there is an extension piece fitted to the cover, remove this also).

2.Withdraw the burner from the cover and replace with the new one.

3.Examine the gasket, replacing if necessary.

4.Reassemble in reverse order.

14.7Insulation (Fig. 86)

1.Remove the electrode leads, noting their positions. Also remove the electrodes as described in section 14.2.

2.Undo the screws securing the collector to the venturi and the nuts holding the cover to the heat exchanger. Draw the collector and cover assembly away.

3.Remove the cover insulation piece.

4.Fit the new insulation carefully over the burner and align it with the slots for the electrodes.

5.If the rear insulation requires replacement remove it and all debris from the heat exchanger. Also it may be necessary to separately remove the spring clip from the pin in the centre of the heat exchanger and the ‘L’ shaped clips embedded in the insulation.

6.DO NOT remove the shrink-wrapped coating from the replacement rear insulation. Keep the insulation vertical and press firmly into position.

7.Examine the cover seal and replace if necessary.

44© Baxi Heating UK Ltd 2012

Image 44

Potthof & Co 28kw, 24kw, 33kw manual Burner Fig, Insulation Fig, Extension Piece

Contents

Installation & Service Instructions Natural Gas Benchmark Scheme Installer Notification Guidelines Scheme Members only Codes of Practice refer to the most recent version Important Installation, Commissioning, Service & RepairLegislation Safe Manual Handling GeneralPreparation Technique Contents Description Contents of PackIntroduction General Layout LayoutExpansion Vessel Automatic Air Vent Circulation Pump Drain Off Point Central Heating Mode Fig Domestic Hot Water Mode FigFrost Protection Mode Appliance Operation Technical Data Gold Combi 24, 28 & 33 HE a Dimensions and Fixings System Details InformationCentral Heating Circuit Bypass Expansion Vessel Central Heating only Safety Pressure Relief Valve FigSystem Filling and Pressurising Fig Hard Water Areas Domestic Hot Water Circuit FigShowers Site Requirements LocationClearances Figs At least Site Requirement Ventilation of CompartmentsGas Supply Electrical Supply Per Pipe run Minimum FallPer Metre Run 500mm min Minimum Fall50mm per Run Minimum fall Plume Displacement Kit FlueBelow windows or openings on pitched roofs 2000 Likely flue positions requiring a flue terminal guard Flue Options Total equivalent length = +B+C+2x90Bends Total Equivalent Length = +B+C+1x90Bend Telescopic Flue inc. elbow Flue AccessoriesKey Accessory Size Code No Air Duct Connection Flue Duct Connection Boiler Adaptor Twin Flue Duct AdaptorTwin Flue Connection Flue Dimensions For Roof TerminalsFlue Trim Terminal Guard Fig Plume Displacement Plume Displacement Kit Fig 28/33 Determining Permissible LengthsExample Elbow 30mm 50mmGeneral Fitting Notes Elbow to allow the flue to be installed as shown 60Ø extension piece. It must be secured using twoUsing a suitable bit e.g mm, drill through Extension and outlet. Secure using two of the screws Installation Unpacking & Initial PreparationFlushing After considering the site requirements Fitting the Filling Loop Kit Fitting the Safety Pressure Relief Discharge Pipe Fig Fitting The BoilerCondensate Drain see section Tighten all the connections Fitting The Flue Wall Thickness Flue ElbowEnsure Elbow is fully engaged into Boiler Adaptor Wall Thickness Waste Flue Ensure Extension is fully engaged into Boiler Adaptor Inner Flue Support Bracket25mm Extension Cut End Terminal Block Cover Cable Clamp Making The Electrical ConnectionsPreliminary Electrical Checks Selector Switch Display CommissioningCommissioning the Boiler Screw Pump Automatic Air Vent Temperature Control Selector Switch Display Temperature Control Gas Pressure Test Point Gas ValveCheck the Operational Working Gas Inlet Pressure It is necessary to set the boiler to ‘Calibration Mode’ Setting the Timer Case Front Panel Facia Panel CompletionCompletion Annual Servicing Inspection Servicing13 .1 Annual Servicing Electrode Position 10 ±1 Spark and Sensing Electrodes Fig Changing ComponentsIgniter Fig Fan Fig Venturi FigInjector Fig Gasket Venturi Injector Cover Gas Inlet Pipe Fan Collector Extension Piece Burner FigInsulation Fig Central Heating Temperature Sensor NTC Fig Safety Thermostat FigDHW Temperature Sensor NTC Fig Flue/Heat Exchanger Thermostat Sensor Fig Automatic Air Vent Fig Pump Head Only FigPump Complete Fig Pressure Relief Valve Fig Pressure Gauge FigsHall Effect Sensor Fig Diverter Valve Motor Unit & Assembly Fig Plate Heat Exchanger Fig Selector Switch Fig 14.22 P.C.B. Fig Gas Valve Fig Expansion Vessel Fig Setting the Gas Valve Setting the Gas Valve CO2 checkFlue Adaptor Test Point Plug Analyser Probe CO2 should be 8.4% ± Reduce CO2 Illustrated Wiring Diagram Electrical Short Parts List Short Parts List426 315316 311 404419 422 400 415 Error Codes Fault FindingInitial Fault Finding Checks Error 133 flashing Go to section ‘A’ Turn the selector switch toReset position for 5 seconds Pump runs Error 133 flashing Go to section ‘I’ Turn Domestic Hot WaterOpen DHW tap fully Close DHW tap PCB X3 connector terminals 3 Switch terminalFan jammed or faulty winding Replace PCB Replace water Check wiring Viewing Window Replace sensor or PCB E28Gas at burner Replace gas valve Replace sensor Replace safety thermostatReplace PCB Is there 230V at Pages for Notes Pages for Notes GAS Boiler System Commissioning Checklist Service Record Potterton