Bosch Appliances 28i junior, 24i junior manual Commissioning

Page 34

COMMISSIONING

33

A

D

F

C

Inlet Test Nipple

NOTE: When running in the service mode, the boiler will operate both the central heating and the domestic hot water circuits. This is to allow sufficient time for this part of the commissioning procedure. It will be necessary to run water through the domestic hot water circuit to ensure that the boiler will not cycle on low heating demands.

I

H

E

G

B

A - On/off button

B - On/off and fault indicator (BLUE) C - Central heating temperature control D - Burner indicator (GREEN)

E - Reset button

F - Service button

G - ECO button

H - System pressure gauge

I - Cover or optional programmer

COMMISSIONING

THE COMBUSTION FOR THE APPLIANCE IS FACTORY SET.

NO ADJUSTMENT IS REQUIRED IF THE GAS INLET PRESSURE IS CORRECT.

CHECKING GAS INLET PRESSURE:

The inlet pressure to the appliance must be checked using the following procedure:

SETTING THE BOILER TO MAXIMUM:

1Press service button (F) for 10 seconds and set Central Heating temperature to maximum.

•The service button will illuminate continually and the blue power indicator will flash quickly.

MEASURING THE INLET PRESSURE:

2Slacken the screw in the inlet pressure test point and connect a manometer.

Measure the pressure with the boiler running at maximum.

Check the gas supply working pressure at the gas valve inlet point is not less than: N.G. 18.5 mbar

L.P.G. 37 mbar

The gas rate should be measured at the gas meter after 10 minutes operation at maximum. See technical data section at the front of this manual.

Ensure inlet pressure is satisfactory with all other gas appliances working.

Replace controls cover. NOTE: This boiler is designed with a differential of 20°C across the heating system.

If pressure is satisfactory press the

IMPORTANT: Do not continue commissioning until the correct gas pressure is achieved.

service button (F) again and the boiler will return to normal operation.

•If left in the service mode the control will return to normal operation after 15 minutes. Re-seal the screw in the gas inlet pressure test point.

DOMESTIC HOT WATER:

Controlling the hot water temperature The hot water temperature is fixed at 55°C.

DOMESTIC HOT WATER PRE-HEAT: Pre-heat reduces the time taken to produce hot water at the tap and is controlled by the ECO button (H).

Press the ECO button to select either:

When the ECO button is not illuminated the boiler will be in pre-heat mode (which will reduce the time taken to produce hot water at the tap).

OR

When the ECO button is illuminated the boiler will be in economy mode with pre-heat no longer active.

COMMISSIONING

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

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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 ComponentsChecks PRE-COMMISSIONINGPRE-COMMISSIONING Checks 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 and Service Inspection and ServiceInspection 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 SiphonPCB fuse Access to boiler control componentsTransformer / PCB 12.3 12.112.2 Replacing control14.4 13.2 13.314.2 15.3 15.1 15.218.4 18.1 18.2 18.3 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.

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