Pressure relief pipe work on Biasi 32HE

[daz3770]

hi there,

i am preparing the pipe work for a Biasi 32HE Boiler. i will not be doing the connection or commissioning but to save a few pennies i am getting things ready.

there is a Pressure relief pipe coming from the boiler and is detailed in the instructions. the installation instructions do not state where it should terminate.

Can anyone shed some light on this for me???

kind regards

 

[EliteHeat]

Usually through a wall to the outside, terminating with a bend towards the wall.

 

[daz3770]

Thanks for your reply.

Would that be 2 x 90 degree bend to end up facing the wall?

 

[EliteHeat]

Would that be 2 x 90 degree bend to end up facing the wall?

It would be neater and less obtrusive using a 90 and a 45.

 

[daz3770]

Cheers. Will do.

 

[wiggikins]

Whats up with a bending machine then !

 

[mehran]

i would try and run it down the wall till about 6 inches from the ground if it was me, useless it is to high up

 

[EliteHeat]

Whats up with a bending machine then !

Not really likely that he's got one is it?

 

[wiggikins]

Lend him yours!

 

[Agile]

Should be taken to 150 mm from the ground if below 2m or turned towards the wall if higher.

Much more relevant on a 32 kW boiler is the gas supply! They usually need a 28 mm gas supply unless within a few metres of the meter.

Tony

 

[Biggles..]

Tony, where do you get the 150mm if below 2m from. never heard or read that.

 

[mehran]

i have heard it before that is why i said run it till 6 inch(which is 152.4 mm btw) of the ground.

think my corgi inspector told me, not sure tho

 

[Biggles..]

Was asking cos having recently been in dispute with LABC over a combi's PRV, Having read bs 6759 and parts G and H of the building regs none of those figures appear. Only G3 states a distance from floor.

 

[Prof.plumb]

To be honest i would leave it to the chap that is fitting the boiler. Because 9 times out of 10 diyers put safety pipes in the wrong position which can make it difficult for making final connections. In addition there is no requirement for bending distances etc. You may notice that british gas now use a fitting that looks much like a cap end that has 3 small holes in it. It fits directly onto the end of the safety pipe and disperses water at the wall.

 

[Agile]

Tony, where do you get the 150mm if below 2m from. never heard or read that.

Its standard good practice and is as used for G3.

But I dont know where you would find it written down in the Building Regulations.

Tony