In an earlier contribution to this discussion,
David W.E. Roberts wrote:


(i) from the top:
SNIP
Disconnect the feed pipe from the bottom of the tank, and connect a
hose pipe to it with a jubilee clip.
Other end of the hosepipe on a mains cold tap. This will pressurise
the system and then you can bleed all the radiators and hopefully
clear all the air out.



Er.. what about the expansion pipe? Unless I'm missing something(!), rather
than pressurise the system, mains water will flow up the expansion pipe into
the header tank - and will promptly pee out through the (now open) bottom
connection!
--
Cheers,
Set Square
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