Bosch Appliances 25/32kW, 18/25, 12/18 instruction manual Front

Page 40

E

F

J

H

K

Gor

J

H

G

A

B

SERVICING

& SPARES

Plan sectional view

Plan sectional view

12/18kW & 18/25kW

25/32kW

 

C

C

 

D

D

FRONT

FRONT

39

INSPECTION AND SERVICE

External oil filter:

Remove the paper element from the external oil filter and replace it. If the filter contains a washable element, thoroughly clean in kerosene and reassemble into the filter.

Clean the boiler:

Manifold access:

Remove top cover by releasing the screws at each corner and lift free. Release screws (E) to remove the flue manifold access cover (F) and clear any debris.

Check the condensate route (G) is clear and clean the condensate trap and pipework. Check the flue system and clean if necessary. Remove the baffle retainer (J) and baffles (H) from the secondary heat exchanger.

Check and clean the secondary heat exchanger surfaces.

NOTE: Do not use wire brushes and cleaning agents to clean the stainless steel secondary heat exchanger components.

Pour 500ml of water into drain (G) to refill the condensate trap.

Clean the secondary heat exchanger baffles

(H)if necessary and refit correctly. Refit the baffle retainer (J).

Check the seal on the manifold access cover

(F) and replace if necessary.

Refit the flue manifold access cover (F) and secure with screws (E).

Combustion chamber:

Release the M10 retaining nuts and washers

(B)and remove combustion chamber access door (A).

Check the fibreglass rope seal on the combustion chamber access door (A) and replace if necessary.

Remove and check the baffle retainer (D). Remove the baffles (C), clean and check the condition of the baffles and the acoustic insulation. Replace any baffles or insulation pads considered to be badly corroded/degraded. Thoroughly clean all of the heat exchanger surfaces using a suitable brush and clear all loose debris from the combustion chamber. Check the condition of the combustion chamber access door insulation. If the insulation is damaged the door assembly must be replaced.

Refit the items in reverse order ensure the baffles (C) and baffle retainers (D) are correctly fitted for the boiler output as shown in the plan view opposite.

Refit combustion access door (A). Secure with nuts and washers (B) and tighten until the door is firmly secured, do not over tighten the nuts.

Fire valve:

Check that the oil supply pipe has a fire valve fitted at least 1m away from the appliance with the fire valve sensor located within the appliance case. A fire valve sensor clip (K) is provided for this purpose.

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 RegulationsSafety Precautions Installation Regulations OIL SMELLS, Leaks or Fumes from the ApplianceGeneral Information General InformationStandard Package Technical Data Technical DataDescription BSPLayout & Components Layout & ComponentsCleaning Primary Systems Cleaning Primary SystemsMains Supplies Mains SuppliesMains Water Expansion Vessel Electric SupplyOIL Supply OIL SupplyG J HeadWater Systems & Pipework Water Systems & PipeworkSHOWERS/BIDETS Filling Primary Sealed SystemsDomestic HOT Water Condensate Pressure Relief Pipework Condensate Pressure Relief PipeworkCondensate Pipework Pressure Relief PipeworkBoiler Location Clearances Boiler LocationClearances FrontCabinet Mounted LOW Level Flue Terminal Positions Cabinet Mounted LOW Level Flue Terminal PositionsTerminal Position High Level Flue Terminal PositionsHigh Level Flue Terminal PositionsBalanced External Oilfit Flue Options Balanced External OilfitFlue Options AC DHorizontal Flue Options Cabinet Mounted BalancedBalanced Flue Options Unpacking the Boiler Lifting and Carrying PrecautionsUnpacking the Boiler Pipework & Flue Positions SafetyPipework & Flue Positions Boiler Installation Boiler InstallationFlue Installation Flue InstallationInstallation Notes Combustion Chamber Combustion ChamberHor Plan sectional view Hook the retainer J over the end two bafflesPipework Connections Pipework ConnectionsWater Connections OIL Supply ConnectionsCondensate Connection Pressure Relief ConnectionOIL Burner & Pump OIL Burner & PumpOIL Burner OIL PumpRefitting Components Refitting ComponentsPlug burner lead E into control box F Mains Programmer External ElectricsBoard ElectricsBr Brown Blue Green/YellowRed WhitePRE-COMMISSIONING PRE-COMMISSIONING Checks ApplianceChecks Appliance Filling the System Filling the SystemStarting the Appliance Starting the ApplianceSafely dispose of the container/discharge Pressure adjustment Vacuum gauge port 25/32 Boiler lockout indicator onBleed & pressure gauge port Holder with oilBurner should be OFF and the circulating pump on Central heating Open all radiator valves Set the room thermostat to minimumWater Treatment Water TreatmentPump and all radiators Finishing Commissioning Finishing CommissioningAppliance Inspection and Service Inspection and ServiceRoutine servicing Loosen clip D to detach air ductClean the Burner 3.0mm Clean both sides of the fan impellerThoroughly clean any deposits Any debris and clean if necessaryFront 50 80EH 11.5 18.655 80EH 12.0 22.2Short Parts List 12/18 Short Parts List 12/18Auto reset High Limit thermostat Part Number 8 716 107 640 Burner SterlingShort Parts List 18/25 Short Parts List 18/25Manifold access cover seal Short Parts List 25/32 Short Parts List 25/32Fault Finding Fault FindingProblem Cause Remedy Faulty Boiler OperationNoisy operation Pump noise from air in pump or OIL SmellsBase of the control box before replacing any components Neutral N and the pin, wire orMeasure all 230V tests between 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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