"John Rumm" wrote in message
...
IMM wrote:

"David W.E. Roberts" wrote in message

If you have mains pressure cold to your shower, then the mixer will work
fine, because the Combi is also at mains pressure.
You should still get a reasonable flow, because you will be drawing less

Not good advice. He has a combi which proves the maisn cold water
pressure
is adequate. The shower mixer should be fed from the hot pipe from the
combi and the cold water mains, then both are at equal pressure.

Erm - I think you will find he said that - try to keep up there's a good
man.

He said a lot of other crap. Take note laddie.