Wonder if you could help us out, just fitted one of these tall designer rads, fitted the bleed nut and stopper at the top and plumbed in the bottom as usual, opened the valves, bled the air, but after 15 to 20 mins it was still cold at the top, and just warm around quarter of the way up, after this I remember there was a red sticker on one end, now does this mean the rad has to be fitted a certain way up ? it looks identical at both ends ??
Cheers
Gaz.
Cheers
Gaz.