Bosch Appliances 28i junior 28.1 28.2, 27.1, Hydraulic Block, 27.2, CH pressure relief valve

Page 50

SERVICING

& SPARES

27.1

REPLACEMENT OF PARTS

 

 

27. Hydraulic Block

 

 

 

Ensure the appliance has been fully drained

 

 

 

(see draining the appliance).

 

 

 

Disconnect the electrical connections to the

 

 

 

NTC, Turbine and pump.

 

 

 

Undo the nuts securing the copper water

 

 

 

pipes to the manifold (there is no need to

 

 

 

remove the gas pipe)

 

 

 

Release the spring clips securing these

 

 

 

water pipes to the plastic housing and

 

 

 

remove the pipes.

 

 

 

Release the spring clip securing the

 

 

 

expansion vessel pipe to the plastic housing

 

 

 

and remove the pipe.

27.2

 

 

Undo the nut securing the pressure gauge to

 

 

its bracket and remove the gauge.

 

 

 

Release the locking devices that secure the

 

 

 

two copper water pipes leading to the

 

 

 

combustion chamber by squeezing the two

 

 

 

tabs together and rotating anticlockwise

 

 

 

(viewed from above).

 

 

 

Remove the rubber pipe connecting the

 

 

 

sump and remove the syphon. NOTE: this is

 

 

 

not essential but makes the removal of the

 

 

 

block easier.

 

27.1

Undo the two screws securing the hydraulic

 

 

 

block to the chassis (located top left / top

 

 

 

right of the housing)

 

27.2

Lift the left hand side of the block slightly,

 

 

 

then manoeuvre the block out, starting with

 

 

 

the right hand side.

 

 

 

Take care not to snag the harness or

 

 

 

pressure gauge bracket.

 

 

NOTE: the block will still contain a small amount

 

 

of water, which will spill if the block is tilted.

 

 

 

To refit, follow the above in reverse. Ensure

 

 

 

any seals that have been disturbed are

 

 

 

renewed.

 

 

28. CH pressure relief valve

 

 

 

Remove the hydraulic block from the boiler

 

 

 

(See Removing the Hydraulic Block).

 

28.1

Remove the spring clip from the Pressure

 

 

 

relief valve housing.

 

28.2

Withdraw the pressure release valve (A) from

 

 

 

its housing.

 

 

 

To refit, follow the above in reverse. Ensure

 

 

 

any seals that have been disturbed are

 

 

 

renewed.

28.1

28.2

 

A

49

REPLACEMENT OF PARTS

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

Page 49 Page 51
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Page 49 Page 51
Contents Natural GAS Appliance is for USE withNatural GAS or L.P.G. Cat II 2H3P Type C13 & C33 Liquid Petroleum GASContact Information Installation & Servicing Instructions Installation & Servicing InstructionsContents Safety Precautions Installation RegulationsGeneral Information SpecificationsGeneral Information Standard PackageTechnical Data Technical DataGAS Inlet Connection 22mm Layout & ComponentsLayout & Components Compression Trap / SyphonLayout & Components Cleaning the Primary System Cleaning Primary SystemsCleaning Primary Systems Open all drain cocks and drainMains Supply Mains SupplyWater Systems & Pipework Water Systems & PipeworkCondensate Pipework Condensate PipeworkPressure Relief Pipework Pressure Relief PipeworkBoiler Location Clearances Ventilation Free Compartments Installation ClearancesServicing Clearances Vented Compartment Boiler Location & ClearancesBoiler Location BathroomsConnections Plumbing ManifoldPlumbing Manifold Heating System 22mm compression fittingsDrwg Terminal Position Distance Flue Terminal PositionsFlue Terminal Positions From a terminal facing the terminal 1200mmFlue Options Flue OptionsImportant Handling Instructions Unpacking Wall Frame Ancillary ItemsAncillary Items Unpacking Wall FrameWall Mounting Template Flue Opening Wall Mounting Plate Flue OpeningUnpacking the Appliance Unpacking the ApplianceBoiler Connections Boiler ConnectionsGAS and Water Connections 189mm 93mm Edge of case 200mm Flue InstallationFlue Installation 250mm min Turret Clamp FlueAddition of Flue Bends Fitting the Elbow Assembling the FlueFitting the Flue Additional Notes and RemindersCondensate Connection Condensate ConnectionCondensate Connection Electrics ElectricsPosition of Wired Components Position of Wired ComponentsPRE-COMMISSIONING Checks PRE-COMMISSIONINGChecks Filling the System Filling the SystemStarting the Appliance Switching the appliance on/offStarting the Appliance Water Treatment KEYWater Treatment Commissioning CommissioningFinishing Commissioning Installing Bottom PanelFinishing Commissioning Replace Outer CasingInspection Inspection and ServiceInspection and Service Removing outer case Component AccessAdjusting boiler control to Service position Primary Heat ExchangerTo maximum Setting Boiler to MaximumBoiler will stay in this mode for AgainTo Clean the Heat Exchanger Inspection and Service Small Tab Primary sensor Replacement of PartsReplacement of Parts Overheat thermostatGas valve Moving boiler control to service positionGas adjuster SiphonTransformer / PCB Access to boiler control componentsPCB fuse 12.3 12.112.2 Replacing control14.2 13.2 13.314.4 18.4 18.1 18.2 18.3 15.1 15.215.3 21.1 21.2 19.120.1 22.1 22.225.1 23.1 23.224.1 26.1 26.2Hydraulic Block 28.1 28.227.1 27.230.1 29.129.2 Plastic protection device32.1 32.2 31.131.2 32.333.3 33.4Short Parts List 1112 1415 1718 2021 2324Code plug G. ConversionCode plugs G. ConversionFault Finding Fault FindingCentral Heating Function Ignition SequenceCentral Heating Function Preheat and DHW Function Preheat and DHW FunctionProtection Function Protection FunctionGAS Boiler Commissioning Checklist Service Interval Record Excellence Comes AS Standard Bonded Washer 3/4
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28i junior, 24i junior specifications

Bosch Appliances has long been synonymous with quality and innovation in the kitchen. Among its notable offerings, the Bosch 24i Junior stands out as a compact yet powerful dishwasher that caters to modern household needs. This appliance is designed to provide efficient cleaning while conserving valuable space in smaller kitchens.

One of the key features of the Bosch 24i Junior is its compact size, measuring 24 inches in width. This makes it an optimal choice for apartments, smaller homes, or kitchens with limited space. Despite its size, it does not compromise on capacity, allowing users to load up to 12 place settings, making it suitable for families or frequent entertainers.

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User convenience is enhanced through features such as the ExtraScrub option, which provides a more powerful wash for heavily soiled items. The adjustable racks offer flexibility for loading larger pots and pans, while the foldable tines accommodate a range of dishware sizes.

In summary, the Bosch 24i Junior is a versatile and efficient dishwasher that is ideal for those with limited space. Its thoughtful design and innovative technologies make it a standout choice for anyone seeking reliable dish cleaning solutions without compromising on performance or efficiency. This model exemplifies Bosch's dedication to delivering cutting-edge appliances that fit seamlessly into modern lifestyles.
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