In an earlier contribution to this discussion,
wrote:

Dont want to appear thick but "The radiators need to be connected in
parallel -
not in series - of course." What does that mean?.

Thanks Set Square and also GymRatz for the reply.

Series would be if the feed pipe went to one rad and the output from that
rad fed the other one - so that the *same* water flows first through one
then through the other. Parallel is where the feed pipe splits and goes to
one side of each rad, and similarly with the return pipe - so there is an
independant path through each rad - so that you can turn one off wthout
affecting the other.

Same as the electrical analogy of wiring resistors in series or parallel,
really.
--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.