Struggling to balance new rads correctly

5 Oct 2009
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West Midlands
United Kingdom
Having installed a new system,rads pipework and a worcestor bosch junior 28i but im struggling to balance the rads correctly.

I am getting the rads much cooler at the bottom then at the top,i know usually this indicates sludged rads but as a new system?Also some rads are alot hotter than others.

I tried restricting the flow via the lockshield,to slow the flow through the rads but cant just get it right.

Any extra tips,im going to collect some pipe stats tommrow to try and help to test the flow and return temp differences?

any assistance appreciated
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