Just been to a customers house and they've had previously a radiator fitted, a standard type, I think it's a Permo radiator, but the sort that are 1800mm high and 600mm wide to go in narrow areas. The bloke who's put it in has connected the flow at the top right corner of the radiator, with a TRV, and the return is fitted at the bottom left corner. The radiator get's hot at the top but cold at the bottom. Although it's odd to pipe it up this way, looks stupid also with the TRV at the top, the lady has to stand on a chair to operate it!! why is it cold at the bottom as I thought logically it should still work. Any ideas?