On Thu, 02 Sep 2004 22:07:24 +0100, Pete C
wrote:

On Thu, 02 Sep 2004 20:11:07 +0100, Andy Hall
wrote:

This gets more and more stupid. Now you are adding an additional
heat exchanger to the mix.

You've forgotten the plastic pipe under the garage floor to preheat it
all.

LOL!

BTW do all condensing boilers modulate right down, or do some just
have two output levels for DHW or CH?

cheers,
Pete.

Most reasonable ones modulate over at least a 3:1 range, some as much
as 8 or 10:1

Some also have different behaviour when they are told (via an
electrical input) that they are driving CH or driving DHW.




..andy

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