boiler on party wall

[tomsim]

Is the distance of 300mm from a boundary to a flue a regulation. As a lot of boilers are hung on party walls with side exit flues so the flue is less than 300mm to the boundary.

 

[Dan Robinson]

Yes.

 

[tomsim]

So why is it not observed all the time?

 

[tomsim]

i.e if a boilers hung on a party wall on a terrace house the flue won't be 300mm from the boundary of next door

 

[TCCHeating]

So why is it not observed all the time?

Because some installers don't care

 

[tomsim]

even though there is no wall at the boundary?

 

[TCCHeating]

Reason the regulation exists is because the neighbour could have building work in the future such as an extension up to the boundry. Its not a case of the flue is safe at the moment. It is a case of could anything happen in the future to make it unsafe

 

[tomsim]

So that's why a lot of installers don't stick to it then. Although am sure have read in ideals spec that it can be reduced to 25mm as long as the flue is clear from other obstructions/openings

 

[TCCHeating]

So that's why a lot of installers don't stick to it then.

I and any installer worth his salt would stick to it. I sometimes have to change position of the boiler or re route the flue on a new install to comply with this reg. Sometimes at considerable expense. But like I say. If an installer quotes to do the job without doing this. Then it will be a cheaper price. And customers sometimes like cheap over correct. A small percentage of installers bring the industry down.

With regards to what you say about ideal. I think you may be talking about reducing the distance to internal/external corners. Some manufacturers allow this. But this doesn't apply to a boundry. I don't know of a manufacturer that let's you reduce the distance to the boundry. I think the distance from a boundry is pretty much industry standard. But I'm sure someone will correct me if I'm wrong

 

[tomsim]

terminal Positions Min. Spacing*

1. Directly below, above or alongside an opening

window, air vent or other ventilation opening. 300mm (12”)

2. Below guttering, drain pipes or soil pipes. 25mm ( 1”)*

BS5440-1 2008 75mm (3”)

3. Below eaves. 25mm (1”)*

BS5440-1 2008 200mm (8”)

4. Below balconies or a car port roof. 25mm (1”)*

BS5440-1 2008 200mm (8”)

5. From vertical drain pipes or soil pipes. 25mm (1”)*

BS5440-1 2008 150mm (6”)

6. From an internal or external corner or to a 25mm (1”)*

boundary along side the terminal. BS5440-1 2008 300mm (12”)

7. Above adjacent ground, roof or balcony level. 300mm (12”)

8. From a surface or a boundary facing the terminal. 600mm (24”)

9. From a terminal facing a terminal. 1,200mm (48”)

10. From an opening in a car port

(e.g. door or window) into dwelling. 1,200mm (48”)

11. Vertically from a terminal on the same wall. 1,500mm (60”)

12. Horizontally from a terminal on the wall. 300mm (12”)

Vertical Terminals

13. Above the roof pitch with roof slope of all angles. 300mm (12”)

Above flat roof. 300mm (12”)

14. From a single wall face. 300mm (12”)

From corner walls. 300mm (12”)

15. Below velux window 2000mm (79”)

16. Above or side of velux window 600mm (24”)

Table

* Only one reduction down to 25mm is allowable per installation


otherwise BS5440-1 2008 dimensions must be followed

 

[dilalio]

8. From a surface or a boundary facing the terminal. 600mm (24”)

Only one of the bullets marked with an * can be reduced to 1", which is why the BS standard is also provided!

 

[Dan Robinson]

Try number 6

 

[gas112]

On the new baxi eco blue the dimension can be reduced with the use of a deflector elbow so the 300mm is not set in stone

 

[gas112]

On the new baxi eco blue the dimension can be reduced with the use of a deflector elbow so the 300mm is not set in stone

 

[tomsim]

No boundary or surface facing the terminal just a boundary running in line with the flue a terrace house but no wall there so no external corner