Emmeti manifold to new radiators.

[Dobbslc]

Hi I'm I've just joined and hope to gain some well needed knowledge! I'm replacing the old 1 pipe heating system in my house as its very old and full of leaks! We're putting down a solid wood floor so I don't want any joints under it that might fail!
I'm thinking of using the Emmeti manifold system for wall hung radiators but can't decide what pipe to use. I could use their own Gerpex pipe but its 16mm and I don't think it'll connect to "standard" rad valves or can I use 15mm pex pipe? Their tech guy that I spoke to said it had to be 15mm with a 1.7mm wall thickness, what 15mm pipe can I use?
Thanks!

 

[Dobbslc]

Most/all? new builds have solid floors with underfloor heating or microbore plastic buried in the screed.

 

[Jerry]

Most/all? new builds have solid floors with underfloor heating or microbore plastic buried in the screed.

Not really

 

[Dobbslc]

Well it's been a long summer and autumn and winter grafting under the floors but its finally done, almost.... Thanks for the advice along the way chaps.
The upstairs heating was piped up in "normal " copper while I had the floors and stud walls ripped out and was the first part of the heating system to be working. You'll see all the new 7×2" joists I had to fit due to the previous owners bodged attempt at extending the bedrooms into the eaves

Then the downstairs was started!!! After much deliberation I went with the Emmeti manifolds and Kuterlex 15mm soft copper coils pulled under the floors. It wasn't exactly easy getting it to pull up straight at the rads but it was ok. I put it in flexible conduit to protect it under the screed, it's all lagged under the old wooden floors and clipped where I could get to it.

Here's a photo of why I was worried about rodents eating the pipes!


I bought the adapters to fit it to the manifolds that have two seals on them and seem to hold the pipe quite tightly and I only had a couple of small leaks due to not tightening them up enough.


Here it is half finished with a temporary loop for testing, it's now got two more 22mm Kuterlex pipes going to the other manifold on the opposite side of the hallway. Now they were a PITA to fit in! The plumber finished installing the new oil boiler and getting the hot water back on in October, I then connected it up and tested.
All in all it works well and we have heat to all but the hall and spare room that will be done when I'm in there doing the wiring at a later date.
Hope this helps anyone doing something similar in an old house with a new extension and mice!