a

 

 

C

 

 

B

 

 

A

 

 

75mm

D

 

min.

 

b

c

 

C

E

 

A

C

 

 

 

 

A

 

450 min.

 

D

Invert

 

 

d

(Unsuitable for clay soil types)

 

C

500mm min.

 

A

F

 

 

 

 

 

25mm

 

 

min.

 

 

G

 

I

400mm

 

min.

 

H

 

 

200mm min.

 

J

K

CONDENSATE &

PRESSURE RELIEF PIPEWORK

CONDENSATE PIPEWORK:

•All national and, where appropriate, local regulations for the discharge and neutralisation of condensate should be followed.

•The condensate pipe must be a minimum of 21.5mmØ polypropylene pipe.

•The condensate pipework must fall at least 50mm per metre towards the outlet and should take the shortest practicable route and not exceed 3 metres outside the building. If a run greater than 3m is required, 32mmØ polypropylene pipe must be used.

•The pipework must follow one of the options shown opposite:

a - Internal waste drainage system b - Soil/vent stack

c - External drainage system

d - External condensate absorption point

•Condensate pipework must not be connected to rainwater downpipes.

•Use waterproof pipe insulation in exposed positions and for external pipework

IMPORTANT: Condensate pipework must not leak and the condensate trap must be filled with water before the boiler is started to prevent the possibility of potentially harmful flue products escaping via the condensate route.

A - Condensate from the boiler condensate trap (supplied) which has a 75mm minimum water seal.

B - Sink.

C - 21.5mm Ø polypropylene condensate pipe.

D - Gully.

E - Internal soil and vent stack.

F - 300mm x 100mm Ø sealed plastic tube.

G - Ground level.

H - Drainage holes 50mm from base of tube (12mm Ø at 25mm centres) facing away from building.

I - Limestone chippings.

PRESSURE RELIEF PIPEWORK:

IMPORTANT: The pressure relief valve is a safety device for the boiler and if activated may discharge boiling water or steam through the relief valve drain pipe.

Care should be taken when siting the outlet pipe so that it does not cause an obstruction or discharge above a window, entrance or other public access where it could cause a hazard.

•The pressure relief drain pipe (K) should be at least 15mm diameter copper pipe and run downwards away from the boiler and discharge away from any electrics or other hazard, preferably to an external drain or soakaway.

•Pipe (K) should be finished with a partial bend, near the outlet to face the external boiler casing (as shown) to help prevent freezing.

PRE - INSTALLATION

J - External boiler casing.

K - Pressure relief pipe.

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

12

CONDENSATE &

PRESSURE RELIEF PIPEWORK

Page 12 Page 14
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Bosch Appliances 25/32kW, 18/25, 12/18 instruction manual Condensate Pressure Relief Pipework, Condensate Pipework
Page 12 Page 14

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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