Manuals / Bosch Appliances / Household Appliance / Boiler

Bosch Appliances 28i junior, 24i junior manual Inspection And Service, Servicing, Spares

Models: 28i junior 24i junior

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SERVICING

& SPARES

INSPECTION AND SERVICE

4Remove electrical connector from fan.

5Undo and remove securing nut (E) from the top of the heat exchanger.

6Remove stainless steel viewing mirror (F).

7Rotate fan and air/gas manifold assembly (G) around the top of the heat exchanger until it stops at the lug.

Lift up assembly and remove from boiler.

8Disconnect spark electrode and flame sensor connections (J).

Remove clamping plate (K).

Remove spark/flame electrode assembly from boiler.

Remove seal from the top of the heat exchanger

INSPECTION AND SERVICE

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 24 i junior/28 i junior 8 716 107 336b (11/05)

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Bosch Appliances 28i junior, 24i junior manual Inspection And Service, Servicing, Spares

Contents

CHECKLIST & service interval record, printed within this manual GB/IEINSTALLATION & SERVICING INSTRUCTIONS INSTALLATION & SERVICING INSTRUCTIONSSTORE THE APPLIANCE IN A DRY AREA PRIOR TO INSTALLATION PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATIONCONTENTS CONTENTSSAFETY & REGULATIONS PRE-INSTALLATIONSAFETY PRECAUTIONS INSTALLATION REGULATIONSDON’T TURN ELECTRICAL SWITCHES ON OR OFF SAFETY PRECAUTIONS INSTALLATION REGULATIONSWhen fitted to wall frame Depth to wall 330mm 400mm GENERAL INFORMATIONB 700mm D C GENERAL INFORMATIONTECHNICAL DATA TECHNICAL DATAAPPLIANCE INFORMATIONLAYOUT & COMPONENTS LAYOUT & COMPONENTSAPPLIANCE INFORMATIONLAYOUT & COMPONENTS LAYOUT & COMPONENTSAPPLIANCE INFORMATIONCLEANING PRIMARY SYSTEMS CLEANING PRIMARY SYSTEMSMAINS SUPPLY INSTALLATION PREMAINS SUPPLY WATER SYSTEMS & PIPEWORK COMMISSIONING INSTALLATIONWATER SYSTEMS & PIPEWORK CONDENSATE PIPEWORK PRE - INSTALLATIONCONDENSATE PIPEWORK PRESSURE RELIEF PIPEWORK PRE - INSTALLATIONPRESSURE RELIEF PIPEWORK VENTILATION FREE COMPARTMENTS INSTALLATION CLEARANCES Ventilation Free Compartments Installation ClearancesSERVICING CLEARANCES VENTED COMPARTMENT If Side Clearances are ReducedSee IEE wiring regulations PRE - INSTALLATIONBOILER LOCATION CLEARANCESPLUMBING MANIFOLD INSTALLATION PREPLUMBING MANIFOLD PRE - INSTALLATION FLUE TERMINAL POSITIONSThe flue should not penetrate the shaded area FLUE TERMINAL POSITIONSFLUE OPTIONS PRE - INSTALLATIONFLUE OPTIONS UNPACKING WALL FRAME AND ANCILLARY ITEMS INSTALLATIONANCILLARY ITEMS INSTALLATION WALL MOUNTING TEMPLATE FLUE OPENINGWALL MOUNTING PLATE FLUE OPENING COMMISSIONINGINSTALLATION UNPACKING THE APPLIANCECAUTION Caps fitted to pipes must be removed before hanging the boilerINSTALLATION AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONSBOILER CONNECTIONS Do not lift by theAND OBSERVE ALL RELEVANT SAFETY PRECAUTIONSINSTALLATION BOILER CONNECTIONSFLUE INSTALLATION FLUE INSTALLATIONINSTALLATION WALLFLUE INSTALLATION FLUE INSTALLATIONINSTALLATION ONLY CUT EXTENDED FLUE LENGTHSFLUE INSTALLATION FLUE INSTALLATIONINSTALLATION A - Standard Flue B - Internal Wall Seal C - External Wall SealCONDENSATE CONNECTION INSTALLATIONCONDENSATE CONNECTION ELECTRICS INSTALLATIONELECTRICS POSITION OF WIRED COMPONENTS POSITION OF WIRED COMPONENTSCOMMISSIONING INSTALLATION RELEVANT SAFETY PRECAUTIONS PRE-COMMISSIONINGCHECKS A D C E BFILLING THE SYSTEM FILLING THE SYSTEMCOMMISSIONING CAUTION DO NOT PRESS POWER INDICATOR B TO RESET BOILER STARTING THE APPLIANCESTARTING THE APPLIANCE COMMISSIONINGWATER TREATMENT NO ADJUSTMENT IS REQUIRED IF THE GAS INLET PRESSURE IS CORRECT COMMISSIONINGCOMMISSIONING COMMISSIONINGFINISHING COMMISSIONING FINISHING COMMISSIONINGCOMMISSIONING INSPECTION AND SERVICE INSPECTION AND SERVICEInspection ANY O -RING OR GASKET THAT APPEARS DAMAGED MUST BE REPLACED1.2 INSPECTION AND SERVICE Component Access2. Adjusting boiler control to service positionINSPECTION AND SERVICE Setting Boiler to MaximumINSPECTION AND SERVICE SERVICINGINSPECTION AND SERVICE To Clean the Heat ExchangerINSPECTION AND SERVICE IMPORTANT IF THE JOINTINSPECTION AND SERVICE INSPECTION AND SERVICESERVICING SPARESINSPECTION AND SERVICE Q Small tabL M N Re-assemble ensuring that the lower baffleREPLACEMENT OF PARTS REPLACEMENT OF PARTS1. Removing outer case 2. Primary sensorREPLACEMENT OF PARTS 5. Moving boiler control to service position7. Gas adjuster REPLACEMENT OF PARTSREPLACEMENT OF PARTS 9. Access to boiler control componentsREPLACEMENT OF PARTS 10. PCB fuseREPLACEMENT OF PARTS REPLACEMENT OF PARTSERROR AND WILL NOT FUNCTION 12.113.1 REPLACEMENT OF PARTS assembly14. Pressure switch Pressure switch Fan Electrode assembly Burner Heat exchangerREPLACEMENT OF PARTS 16. Electrode assemblyREPLACEMENT OF PARTS 15.1REPLACEMENT OF PARTS 22. DHW temperature sensorREPLACEMENT OF PARTS 19.1REPLACEMENT OF PARTS housing and filterREPLACEMENT OF PARTS 23.1REPLACEMENT OF PARTS REPLACEMENT OF PARTS28.1 28.2REPLACEMENT OF PARTS REPLACEMENT OF PARTS30.2 29.1REPLACEMENT OF PARTS Expansion vessel replacementREPLACEMENT OF PARTS 31.1SETTING THE GAS / AIR RATIO 33. Setting the CO2REPLACEMENT OF PARTS Note When running in the service mode, theSHORT PARTS LIST REPLACEMENT OF PARTS1112 1415 1718 2021 2324 SERVICING SPARES1. Moving boiler control to service position 3. Gas adjusterL. P. G. CONVERSION 2. Gas valveFAULT FINDING Lockout resetFault Possible solution/checkFAULT FINDING DIAGRAMS IGNITION SEQUENCECENTRAL HEATING FUNCTION CENTRAL HEATING FUNCTIONFAULT FINDING DIAGRAMS IGNITION SEQUENCEPREHEAT AND DHW FUNCTION PREHEAT AND DHW FUNCTIONFAULT FINDING DIAGRAMSPROTECTION FUNCTION PROTECTION FUNCTIONGAS BOILER COMMISSIONING CHECKLIST SERVICE INTERVAL RECORD Pack Number Greenstar 24i Junior/28i JuniorHardware/Literature Pack INSTALLATION, COMMISSIONING & SERVICING