In an earlier contribution to this discussion,
Paul Barker wrote:


Put the expansion vessel on the return to the boiler in a position
where there are no controls between the vessel and the boiler like
zone valves or gate valves, so that it is effectively always in open
series with the boiler.

Is that mandatory? It would be much easier to put it in the airing
cupboard - using the pipes which currently go to the F&E tank, which connect
into the flow pipe just before the pump and zone valves.

So there *would* be an open path to the boiler - but it would be on the flow
rather than return side. is there a problem with that?
--
Cheers,
Set Square
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