Manuals / Bosch Appliances / Household Appliance / Boiler

Bosch Appliances 12/18, 18/25, 25/32kW 50 80EH, 11.5 18.6, 55 80EH, 12.0 22.2, 65 80EH, 12.5 25.8

Models: 25/32kW 12/18 18/25

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B

A

C

D

F

E

NOMINAL BOILER RATING AT NORMAL OPERATING

TEMPERATURE USING 28sec KEROSENE:

 

OIL PUMP

FUEL

APPROX.

 

APPROX.

 

APPLIANCE

 

NOZZLE

PRESSURE

FLOW RATE

FLUE GAS

%CO2

AIR

INPUT

OUTPUT

 

(p.s.i.)

 

 

TEMP °C

 

SETTING

 

 

 

 

 

Kg/h

l/h

 

kW

Btu/hr

kW

Btu/hr

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12/18 - Bentone Sterling 40 Burner:

 

 

 

 

 

 

0.35 80°SR

115

1.04

1.32

66

11.5

2.5

12.4

42300

12

40900

0.45 80°S

115

1.29

1.63

70

12.0

4.5

15.5

52900

15

51200

0.50 80°ES

140

1.55

1.96

73

12.5

5.25

18.6

63500

18

61400

18/25 - Bentone Sterling 50 Burner:

 

 

 

 

 

 

0.50 80°EH

130

1.56

1.98

72

11.5

4.25

18.6

63500

18

61400

0.55 80°EH

145

1.86

2.36

79

12.0

6.0

22.2

75750

21.5

73400

0.65 80°EH

150

2.17

2.75

82

12.5

8.0

25.8

88000

25

85300

25/32 - Riello RDB Burner:

 

 

 

 

 

 

 

0.75 60°ES

105

2.15

2.72

78

11.5

3.0

25.5

87000

25

85300

0.75 60°ES

140

2.45

3.1

80

12.0

4.0

29.1

99300

28.5

97200

0.85 60°ES

150

2.75

3.48

83

12.5

5.0

32.7

111600

32

109200

INSPECTION AND SERVICE

Re-commission the burner:

1Align burner combustion head (A) into the boiler housing tube with gasket (B) correctly fitted.

Push firmly down to compress the gasket (B). Tighten burner retainers (C) sufficiently to ensure a good seal.

IMPORTANT:

Ensure the gasket is a good seal between the burner combustion head and the boiler housing to prevent flue gases escaping.

Refit flexible air duct and secure with clip (D).

2Plug burner lead (E) into control box (F). Connect an oil pressure gauge to the oil pump, run the burner and check the oil pressure is correct for the required boiler output. Check that the smoke reading is between 0 and 1, if the smoke reading is above 1 check the air setting. If the air setting is correct check that the burner has been reassembled correctly.

Allow the boiler to warm up then check the combustion settings are correct as indicated in the table below, adjust the

CO2 if necessary using the air shutter. When the combustion is correct turn off the boiler, remove the pressure gauge and refit the blanking plug and plastic cover.

Refit panels:

 

3 Refit the top panel and press down to

 

compress the seal when fitting the

 

securing screws.

 

Push the front panel up behind the top

 

panel and push in at the base to secure

 

the screws with the tool provided.

 

After service handover:

 

Make a note of the date of any water treatment.

 

Set the controls back to the users

 

requirements.

 

Complete the service interval record at the

SERVICING SPARES&

back of this manual and a CD11 or an

 

equivalent form.

 

If the appliance is unused and exposed to

 

freezing conditions; shut off all the mains

 

supplies, isolate the boiler and drain the

 

system and boiler, including the secondary

 

heat exchanger.

 

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

INSPECTION AND SERVICE

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Bosch Appliances 12/18 50 80EH, 11.5 18.6, 55 80EH, 12.0 22.2, 65 80EH, 12.5 25.8, Back of this manual and a CD11 or an
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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.