Manifold to radiator feed using Hep2O and elbows

[Donkey Table]

Hello All

Its my first jobbie using Hep2O. Im installing a vertical mounted radiator manifold, and the feeds to wall mounter radiators.

Im using Hep2O barrier pipe the HXX100/15W.

Q1 Is there an issue using elbows in a plastic 15mm barrier radiator feeds - i.e some bore constriction issue Im unaware of?
Ideally I would like to have an unbroken length between the radiators and the manifold, however getting the radius bends on 90 degree turns is a right pain. Using copper simples, 90 degree bend.

Q2 Ive seen posts say keep the feed from the maniford to the radiator shorter that 6 metres, where has that come from sounds like guessing.

Thanks in adavance.

Donks

 

[exedon2]

Sketch of what you intend doing including distances would be useful .

 

[Donkey Table]

 

[Donkey Table]

This is the Emmiti diagram. The longest route is about 10 metres.

 

[ShaunCorbs]

15mm you will be fine only becomes a problem on 10mm when you go over 6m combined

If it’s too tight if a radius for down stairs eg coming out into the rad valves use an elbow in the wall least if it ever goes you know where they are and tbh easy to patch up

 

[Donkey Table]

15mm you will be fine only becomes a problem on 10mm when you go over 6m combined

If it’s too tight if a radius for down stairs eg coming out into the rad valves use an elbow in the wall least if it ever goes you know where they are and tbh easy to patch up

Hi Shaun thanks for the info. What does combined mean 6 out 6 back? Or something else?

 

[ShaunCorbs]

Yes but let’s say a combined of 6 so 3m f and 3m r

 

[Donkey Table]

Yes but let’s say a combined of 6 so 3m f and 3m r

Wow Shaun thats not far, it takes say 2 metre to come up the wall and out into the joist space. Then you have to travel to the maniforld. Are we talking the same context?

 

[ShaunCorbs]

Yes on 10mm 15mm is fine for a long length