In article ,
Phil Addison wrote:
???

The "???" was because I'm not sure what you mean by "key down the output
valves and retain these settings."

Some think that when you fit TRVs, there's no need to balance a system, so
have the lockshield valve fully open. There's some truth in this in that
all rads will probably get hot eventually, but it might be that the last
in the chain does so very much later than the rest.

So my comment meant that if you use the LSV which is set correctly on a
balanced system as the one you keep when fitting TRVs, you'll save some
work.

--
*No radio - Already stolen.

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