In article ,
IMM wrote:
Put the combi in the loft and have a secondary circulation pump to ensure
instant water at all taps.

I'm pondering why you're so keen on the 'one box' solution for simplicity
of fitting for useless plumbers and self proclaimed 'heating engineers'
who can't cope with external tanks, pumps and flow share valves, but
recommend using a secondary circulation pump and the extra pipework and
skills this involes?

Of course I don't expect an answer. To save your fingers for better things
I'll include a line for you to just quote:-

(snip drivel)

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*All generalizations are false.

Dave Plowman London SW
To e-mail, change noise into sound.