In article ,
Doctor Evil wrote:
Subzoning is easily achieved using a single boiler.

It is NOT. You require zone valves, which take up space

A zone valve takes up space? Do you live in a doll's house?

and the control wiring and knowledge to do it to boot.

Ah. Now the truth. You don't know how to wire them.

Two combi's achieves this much simpler with virtually no wiring worth
talking about. To avoid Part P you can even connect them up to a 3 pin
socket.

But double the CORGI fees for the gas work and commissioning?

Which planet are you on to-day?

--
*Ham and Eggs: Just a day's work for a chicken, but a lifetime commitment

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