On Sun, 19 Sep 2004 22:45:15 +0100, Mike Clarke
wrote:

It is a modulating boiler and has an internal bypass.

I keep forgetting that modulating boilers are common on gas. I don't
have gas so I'm oil centric :-), and modulating oil burners are very
rare (and expensive).


--

Malcolm

Malcolm Reeves BSc CEng MIEE MIRSE, Full Circuit Ltd, Chippenham, UK
, or ).
Design Service for Analogue/Digital H/W & S/W Railway Signalling and Power
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