I have fitted 2 rads one upstairs and one down, the one upstairs is a ladder rad 1785 X 585 the one downstairs is a ladder 1180 X 495. The pipework has been "T" off to feed upstairs rad and then feed downstairs. The problem is the upstairs rad got hot quickly but the downstairs did not. I closed the rad upstairs and the one downstairs heated up fine.
I have now turned down the valve to the upstairs and both rads now heat up although the upstairs feels slightly warmer.
Is this the correct thing to do or should the valve be fully open? Is this a balancing issue?
Or does the pump need turning up if possible?
I would really appreciate some feedback on this issue. Thank you in advance for any help you can provide!

Mark, March 2008

thats not how to balance a system.
you leave the wheelhead flow side fully open and adjust the locksheild valve.

hi-spec plumbing & heating, March 2008

It is a balancing act,if the downstairs out feed valve is wide open the water won't stay in the rad long enough to heat up,if the in feed valve is closed to much you won't have enough hot water to heat the rad up.Close all valves on both rads then open them the same number of turns (say 2 full turns) and go from there.

Rich, March 2008