On 9 Mar 2004 05:10:36 -0800, in uk.d-i-y
(Robert) strung together this:

A hot press is a very small room in which you place a big copper tank.
A worm from the heating system goes in and out of it. The worm heats
the water inside and supplies the hot water tap.

Some people call it an airing cupboard.

So it is this tank that is not heating proberly.

Thanks for the reply

Any suggestions

Hmm, novel terminology!
What type of heating system have you got? Is it a gravity, y\s plan or
something else entirely?
If it's a pressurised system you did refill it didn't you? Do you mean
it's dropping to .5 bar or will not fill to above .5 bar, or has it
ever been above .5 bar?
--

SJW
A.C.S. Ltd.