Manuals / Bosch Appliances / Household Appliance / Boiler

Bosch Appliances 24i junior, 28i junior manual Protection Function, Fault Finding, Diagrams

Models: 28i junior 24i junior

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PROTECTION FUNCTION

Boiler temperature

below 8°C

Pump antiseize

Run autofroststat

function

Pump run 5 seconds

every 24hrs

FAULT FINDING

& DIAGRAMS

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

PROTECTION FUNCTION

Page 59

Image 59

Bosch Appliances 24i junior, 28i junior manual Protection Function, Fault Finding, Diagrams

Contents

GB/IE CHECKLIST & service interval record, printed within this manualPLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION INSTALLATION & SERVICING INSTRUCTIONSINSTALLATION & SERVICING INSTRUCTIONS STORE THE APPLIANCE IN A DRY AREA PRIOR TO INSTALLATIONPRE-INSTALLATION CONTENTSCONTENTS SAFETY & REGULATIONSSAFETY PRECAUTIONS INSTALLATION REGULATIONS SAFETY PRECAUTIONSINSTALLATION REGULATIONS DON’T TURN ELECTRICAL SWITCHES ON OR OFFGENERAL INFORMATION When fitted to wall frame Depth to wall 330mm 400mmGENERAL INFORMATION B 700mm D CINFORMATION TECHNICAL DATATECHNICAL DATA APPLIANCEINFORMATION LAYOUT & COMPONENTSLAYOUT & COMPONENTS APPLIANCEINFORMATION LAYOUT & COMPONENTSLAYOUT & COMPONENTS APPLIANCECLEANING 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 If Side Clearances are Reduced VENTILATION FREE COMPARTMENTS INSTALLATION CLEARANCESVentilation Free Compartments Installation Clearances SERVICING CLEARANCES VENTED COMPARTMENTCLEARANCES See IEE wiring regulationsPRE - INSTALLATION BOILER LOCATIONPLUMBING MANIFOLD INSTALLATION PREPLUMBING MANIFOLD FLUE TERMINAL POSITIONS PRE - INSTALLATIONFLUE TERMINAL POSITIONS The flue should not penetrate the shaded areaFLUE OPTIONS PRE - INSTALLATIONFLUE OPTIONS ANCILLARY ITEMS INSTALLATIONUNPACKING WALL FRAME AND ANCILLARY ITEMS COMMISSIONING INSTALLATIONWALL MOUNTING TEMPLATE FLUE OPENING WALL MOUNTING PLATE FLUE OPENINGremoved before hanging the boiler INSTALLATIONUNPACKING THE APPLIANCE CAUTION Caps fitted to pipes must beDo not lift by the INSTALLATIONAND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS BOILER CONNECTIONSBOILER CONNECTIONS AND OBSERVE ALL RELEVANT SAFETYPRECAUTIONS INSTALLATIONWALL FLUE INSTALLATIONFLUE INSTALLATION INSTALLATIONONLY CUT EXTENDED FLUE LENGTHS FLUE INSTALLATIONFLUE INSTALLATION INSTALLATIONA - Standard Flue B - Internal Wall Seal C - External Wall Seal FLUE INSTALLATIONFLUE INSTALLATION INSTALLATIONCONDENSATE CONNECTION INSTALLATIONCONDENSATE CONNECTION ELECTRICS INSTALLATIONELECTRICS COMMISSIONING INSTALLATION POSITION OF WIRED COMPONENTSPOSITION OF WIRED COMPONENTS A D C E B RELEVANT SAFETY PRECAUTIONSPRE-COMMISSIONING CHECKSCOMMISSIONING FILLING THE SYSTEMFILLING THE SYSTEM COMMISSIONING CAUTION DO NOT PRESS POWER INDICATOR B TO RESET BOILERSTARTING THE APPLIANCE STARTING THE APPLIANCEWATER TREATMENT COMMISSIONING NO ADJUSTMENT IS REQUIRED IF THE GAS INLET PRESSURE IS CORRECTCOMMISSIONING COMMISSIONINGCOMMISSIONING FINISHING COMMISSIONINGFINISHING COMMISSIONING ANY O -RING OR GASKET THAT APPEARS DAMAGED MUST BE REPLACED INSPECTION AND SERVICEINSPECTION AND SERVICE Inspectionservice position 1.2 INSPECTION AND SERVICEComponent Access 2. Adjusting boiler control toSERVICING INSPECTION AND SERVICESetting Boiler to Maximum INSPECTION AND SERVICEIMPORTANT IF THE JOINT INSPECTION AND SERVICETo Clean the Heat Exchanger INSPECTION AND SERVICESPARES INSPECTION AND SERVICEINSPECTION AND SERVICE SERVICINGRe-assemble ensuring that the lower baffle INSPECTION AND SERVICEQ Small tab L M N2. Primary sensor REPLACEMENT OF PARTSREPLACEMENT OF PARTS 1. Removing outer caseREPLACEMENT OF PARTS REPLACEMENT OF PARTS5. Moving boiler control to service position 7. Gas adjuster10. PCB fuse REPLACEMENT OF PARTS9. Access to boiler control components REPLACEMENT OF PARTS12.1 REPLACEMENT OF PARTSREPLACEMENT OF PARTS ERROR AND WILL NOT FUNCTIONPressure switch Fan Electrode assembly Burner Heat exchanger 13.1 REPLACEMENT OF PARTSassembly 14. Pressure switch15.1 REPLACEMENT OF PARTS16. Electrode assembly REPLACEMENT OF PARTS19.1 REPLACEMENT OF PARTS22. DHW temperature sensor REPLACEMENT OF PARTS23.1 REPLACEMENT OF PARTShousing and filter REPLACEMENT OF PARTS28.2 REPLACEMENT OF PARTSREPLACEMENT OF PARTS 28.129.1 REPLACEMENT OF PARTSREPLACEMENT OF PARTS 30.231.1 REPLACEMENT OF PARTSExpansion vessel replacement REPLACEMENT OF PARTSNote When running in the service mode, the SETTING THE GAS / AIR RATIO33. Setting the CO2 REPLACEMENT OF PARTSSERVICING SPARES SHORT PARTS LISTREPLACEMENT OF PARTS 1112 1415 1718 2021 23242. Gas valve 1. Moving boiler control to service position3. Gas adjuster L. P. G. CONVERSIONPossible solution/check FAULT FINDINGLockout reset FaultCENTRAL HEATING FUNCTION FAULT FINDING DIAGRAMSIGNITION SEQUENCE CENTRAL HEATING FUNCTIONPREHEAT AND DHW FUNCTION FAULT FINDING DIAGRAMSIGNITION SEQUENCE PREHEAT AND DHW FUNCTIONPROTECTION FUNCTION FAULT FINDINGDIAGRAMS PROTECTION FUNCTIONGAS BOILER COMMISSIONING CHECKLIST SERVICE INTERVAL RECORD INSTALLATION, COMMISSIONING & SERVICING Pack NumberGreenstar 24i Junior/28i Junior Hardware/Literature Pack