In article .com,
new to diy wrote:
I have a choice of 2 rads which could be considered closest to the
bolier. One rad has a 4 degrees C drop across it (20-16) but the
other, get this, has an increase across it (21-27)? Have the builders
put the wheelhead/lockshield valves on the wrong way round? Would the
central heating system still work ok if this were the case?

If you're measuring pipe temperatures in the 20C range, try switching the
heating on?

--
*The man who fell into an upholstery machine is fully recovered.*

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