Longest flu length possible on a normal boiler

[scotster]

I am looking to move and replace my old boiler.

Where I would want to resite the boiler is 3m from the external wall.

It is a normal boiler not an on demand one. Can I get a flu to run that long please? I have heared of flu's with fans?

Any help welcome. Ta. Scott

 

[Agile]

You dont apparently realise that for us to give you any meanful answer you need to quote the boiler make and model.

In that case you should engage a competent CORGI registered boiler engineer to advise you.

Its not usually sensible to move a boiler more than four years old.

Most modern boilers can accommodate 3 m flue length but that depends on the exact model chosen.

Tony

 

[scotster]

thanks Tony.

At least now know its an option as I will be getting a new boiler.

 

[Agile]

I did not mention that the maximum permitted flue length must be calculated by taking into account any bends involved.

Generally a 90° bend counts as 0.9m so any bends seriously reduce the maximum length achievable.

Each individual model has its own maximum length so a 30kW will be different from a 24 kW of the same general make and model.

Tony

 

[chrishutt]

I am looking to move and replace my old boiler.

Virtually any new boiler will be able to flue 3 metres horizontally.

 

[Bambergaspipe]

I am looking to move and replace my old boiler.

Where I would want to resite the boiler is 3m from the external wall.

It is a normal boiler not an on demand one. Can I get a flu to run that long please? I have heared of flu's with fans?

Any help welcome. Ta. Scott

Consult Manufacturers instructions.If you don`t have them,ring the maker of your boiler. Don`t remove or reposition it before.

 

[Slugbabydotcom]

I have heared of flu's with fans?

This implies that your boiler is not fan flued and therefore will not be adaptable with regards extending the flue.

 

[gas4you]

Does your boiler have a 4 or 5" round flue terminal, or is it about 9-12" square?