"Bob Mannix" wrote in message
...

I tend not to respond to wilful misunderstandings - thanks for doing it
for
me!

He did a lousy job for you.

Quite, quite and quite (to your points). I meant (and you, at least,
could clearly understand) that I had only found adequate flow rates from
rather large combis that would be impractical to install in my/most
home(s).

High flow combi's can be wall mounted.

In their place (for example a restored listed building rented out where a
"conventional" system was undesirable and the *large* combi could be put
outside) it did a fine job.