On Thu, 24 Jun 2010 12:31:27 +0100, Steve wrote:

On 24/06/2010 12:22, John Rumm wrote:


Which four - i.e. top, bottom, or elsewhere?


random - 2,3,5,10 although the manufacturer's report shows slight
differences (see post above)

It sounds like you may have a case of a poorly balanced heating system,
so that the flow rate through the rad is too low. This could manifest in
slow and uneven heating, but since the actual output of these rads is
actually quite low, would not stop at least some of it getting hot to
the touch.


Thanks for the reply John. For info, I did close all other rads off to
direct flow only through this one and it was the same. Presumably this
eliminates the unbalance theory?



It might be a case of having to take the hit and attempt to extract
satisfaction from the plumber.



Sounds like you might be right. Thanks again for your input.


It is quite possible that the manufacturer tested it at a much higher
flow rate than the average central heating system.

I would be inclined to write to the seller and reject the item as not
being of merchantable quality, requesting a full refund.