Having received my new toy - an IR thermometer from Maplin recently mentioned here - I set about trying to balance the CH radiators. I understand that I need to achieve a temp. drop across each radiator of ~
20"F.The problem I have though is where exactly to take the temp reading from. The diagrams I've seen show pipe thermometers attached to the radiator tails but the tails are painted here and therefore somewhat insulated? I wondered whether taking the temp from the chromed connections at each end of the radiator might make sense?
Other questions...
How long should I wait after adjusting a lockshield before remeasuring the temperatures?
The temperature varies depending on the type of surface I point the laser dot at - do I need to ensure all surface types are the same?
The radiator surface itself reads around 30"F higher than either of the pipes at each end of the radiator - how can that be?
Sorry for what are probably dumb questions.