As dan has said if you just connect to the top then only the top couple of inches will heat up you need some sort of insertion tube made to reach down into rad
I know I'm a couple of years late coming to this thread but I find myself in the same position as the original correspondent. Hopefully all the contributors are still with us and can answer this query. Dan_Robinson came up with the idea that soldering a length of tube to the return union terminating a short distance from the bottom of the return down tube would permit the towel rail to be plumbed supply and return into the top. I gather from the way he couched his reply that this was something he had done himself, is it still working Dan? and can you give me specific directions how to do it? I want to fit a 1600 x 600 towel rail in my bathroom and plumb it from the ceiling, I have solid floors which have been nicely tiled by the previous owner of this house and I don't want to dig them up, neither do I want to run pipes around the wall.
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