"RichardS" noaccess@invalid wrote in message
.. .
"Andy Hall" wrote in message
...

snip


Concentric flue extensions are "very" expensive. The 28 HE cannot use
plastic drain piping for the flue. Putting the boiler in the loft
solves
many problems and releases space in the kitchen.


Moving the installation, relocating pipework and all associated
disruption
and redecoration cheaper than installing a tall concentric flue?
Somehow
doubt it.

Never mind about that. The principle is more important than the
practicality. :-)

Quite, the one true constant in IMM's threads....

You have to get the conceptual principles right, otherwise you mess it up.
Just like these no computer people who end up in IT and end up screwing
everything up. They just don't know enough.