Bosch Appliances 12/18, 18/25, 25/32kW instruction manual Inspection and Service, Routine servicing

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on

A

service

1

C

2

B

G

SERVICING

& SPARES

3

D

4

F

E

37

INSPECTION AND SERVICE

CAUTION: ISOLATE THE WATER, ELECTRICITY AND OIL MAINS SUPPLIES BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.

DO NOT USE PRESSURE WASHERS OR STEAM CLEANERS ON THIS APPLIANCE OR ITS CABINET.

WARNING: EXTERNAL EQUIPMENT OPERATED AT 230 VOLTS SHOULD NOT BE SERVICED OR REPAIRED UNDER ADVERSE WEATHER CONDITIONS

Routine servicing:

To maintain efficient boiler operation, the following should be carried out at least once a year:

Carry out a pre-service check and note any operational faults:

Pre-Service Check:

1Unndo the screws at the base of the

front panel using the tool provided and pull the panel down and out to remove.

Store safely away from the working area.

Operate the appliance and system and note any faults which may need to be corrected during the service.

Switch into service mode at switch (A).

2Depress locking ears and unplug burner lead (B) from control box (C).

•An adapter lead is available to allow mains voltage service aids to be operated from the service connection (G). (Service lead Part No. 8 716 113 483 0).

3 Loosen clip (D) to detach air duct.

4Unscrew burner retainers (E) to release the burner combustion head (F).

Lift burner away, taking care not to over strain the flexible oil hose/s or connections.

See the following instructions for detail of some of the service requirements listed

below:

Check and clean the burner. Replace burner nozzle and flexible oil hose/s.

Check and clean the baffle retainers. Check and clean the baffles.

Check and clean the heat exchangers surfaces.

Check the combustion chamber access door insulation board.

Check that the flue system is unobstructed and clean as necessary.

Clean or replace all oil filters.

Check that the condensate system is not obstructed, clean and refill the condensate trap as necessary.

Sealed systems only: The PRV is a safety device and must be checked for correct operation.

The expansion vessel pressure must be checked and adjusted as required.

INSPECTION AND SERVICE

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32 8 716 113 389b (09/07)

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Contents Greenstar Heatslave External 12/18, 18/25, 25/32kW Installation & Servicing Instructions Installation & Servicing InstructionsContents Safety Precautions Installation Regulations Safety PrecautionsInstallation Regulations OIL SMELLS, Leaks or Fumes from the ApplianceStandard Package General InformationGeneral Information Description Technical DataTechnical Data BSPLayout & Components Layout & ComponentsCleaning Primary Systems Cleaning Primary SystemsMains Water Expansion Vessel Mains SuppliesMains Supplies Electric SupplyG J OIL SupplyOIL Supply HeadWater Systems & Pipework Water Systems & PipeworkDomestic HOT Water Filling Primary Sealed SystemsSHOWERS/BIDETS Condensate Pipework Condensate Pressure Relief PipeworkCondensate Pressure Relief Pipework Pressure Relief PipeworkClearances Boiler Location ClearancesBoiler Location FrontTerminal Position Cabinet Mounted LOW Level Flue Terminal PositionsCabinet Mounted LOW Level Flue Terminal Positions High Level Flue Terminal High Level Flue TerminalPositions PositionsFlue Options Balanced External Oilfit Flue OptionsBalanced External Oilfit AC DBalanced Flue Options Cabinet Mounted BalancedHorizontal Flue Options Unpacking the Boiler Lifting and Carrying PrecautionsUnpacking the Boiler Pipework & Flue Positions SafetyPipework & Flue Positions Boiler Installation Boiler InstallationInstallation Notes Flue InstallationFlue Installation Hor Plan sectional view Combustion ChamberCombustion Chamber Hook the retainer J over the end two bafflesWater Connections Pipework ConnectionsPipework Connections OIL Supply ConnectionsCondensate Connection Pressure Relief ConnectionOIL Burner OIL Burner & PumpOIL Burner & Pump OIL PumpPlug burner lead E into control box F Refitting ComponentsRefitting Components Board MainsProgrammer External Electrics ElectricsRed Br BrownBlue Green/Yellow WhiteChecks Appliance PRE-COMMISSIONING Checks AppliancePRE-COMMISSIONING Filling the System Filling the SystemSafely dispose of the container/discharge Starting the ApplianceStarting the Appliance Bleed & pressure gauge port Pressure adjustment Vacuum gauge port 25/32Boiler lockout indicator on Holder with oilBurner should be OFF and the circulating pump on Central heating Open all radiator valves Set the room thermostat to minimumPump and all radiators Water TreatmentWater Treatment Appliance Finishing CommissioningFinishing Commissioning Routine servicing Inspection and ServiceInspection and Service Loosen clip D to detach air ductThoroughly clean any deposits Clean the Burner3.0mm Clean both sides of the fan impeller Any debris and clean if necessaryFront 55 80EH 50 80EH11.5 18.6 12.0 22.2Auto reset High Limit thermostat Part Number 8 716 107 640 Short Parts List 12/18Short Parts List 12/18 Burner SterlingManifold access cover seal Short Parts List 18/25Short Parts List 18/25 Short Parts List 25/32 Short Parts List 25/32Fault Finding Fault FindingNoisy operation Pump noise from air in pump or Problem Cause RemedyFaulty Boiler Operation OIL SmellsMeasure all 230V tests between Neutral N and the pin, wire orBase of the control box before replacing any components 535 SE/LD RDB Fault Finding Control BOX Logic forSchematic ElectricalOIL Boiler Combustion Record Service 1 Date General checks Excellence Comes AS Standard

25/32kW, 12/18, 18/25 specifications

Bosch Appliances has carved out a reputation for engineering high-performance heating solutions, particularly with their range of heating systems including the 18/25, 12/18, and 25/32 kW models. These systems are designed to meet the diverse needs of residential and commercial spaces while maintaining energy efficiency and sustainability.

The Bosch 18/25 kW model excels in providing an optimal heating solution for medium to large residential properties. It is equipped with a highly efficient condensing boiler that extracts additional heat from flue gases, achieving significant energy savings. The built-in, user-friendly interface allows for easy programming and monitoring, which maximizes user convenience.

The 12/18 kW model provides a versatile opportunity for smaller homes or apartments. Its compact design ensures that it fits seamlessly into tighter spaces without sacrificing performance. The unit operates quietly, making it an excellent choice for residential areas where noise can be a concern. Additionally, it features the latest modulation technology, optimizing energy usage and maintaining consistent temperatures.

Finally, the 25/32 kW model is ideal for larger installations, offering robust performance even in high-demand scenarios. This model benefits from advanced heating management systems that enable intelligent control of heating zones, ensuring efficiency and comfort throughout the property. With its enhanced energy rating, the 25/32 kW model significantly reduces the carbon footprint, aligning with modern sustainability goals.

Across the board, Bosch Appliances integrates advanced technologies such as intelligent diagnostics, smart home compatibility, and eco-friendly materials. All models are constructed with durability in mind, featuring corrosion-resistant heat exchangers and high-quality components designed for longevity.

The customer-focused features, including comprehensive warranty packages and responsive customer service, further exemplify Bosch's commitment to quality. Overall, Bosch Appliances 18/25, 12/18, and 25/32 kW heating systems stand out for their innovative technology, efficient performance, and reliability, making them an excellent choice for those looking to upgrade their heating solutions.
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