In article ,
Keith Moore wrote:
My question is should the inlet or outlet valve on a radiator be used
as the LSV?

It really doesn't matter - although on some it might make a slight
difference to noise.

However, if you intend fitting TRVs at some point which *usually* go on
the input, it might make sense to key down the output valves and retain
these settings.

--
*El nino made me do it

Dave Plowman London SW
To e-mail, change noise into sound.