by htg engineer »
Sun Aug 12, 2007 8:27 pm
you can tee off existing radiators pipes if 15mm, do not attempt to try teeing off 8 or 10mm pipes as the radiator will not work.
The best way to do this is to tee into the flow and return under the floor upstairs, these will probably be 22mm and you can take branches off these in 15 or 10mm.
These can be ran in mini-trunking if you want a quick installation with no mess or decorating, or the best way is to chase these pipes into the wall.
Abit more info on the size of pipes would help, are the radiators fed with 15mm pipe or minibore ?