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Hi all. We've just had a Greenstar 34CDi fitted and the manual doesn't state what the differential temperature of the flow should be. I've seen both 12 and 20 degrees stated as a differential to be aiming for when balancing. Does anyone know whether this system should be balanced for a 12 or...

That's good to know, thanks. I'll have a crack at it tomorrow.

HI all. On the system I'm balancing we've found that a number of the TRVs are connected so that they're on the output of the radiator, even though the flow indicator on the valve shows that they should be on the input. There doesn't seem to be any reason for it, other than the various fitters...

Hi all, we've just had a new WB Greenstar 34 CDi fitted to replace our 20ish year old Worcester 240, and very pleased with it we are. However, the radiators in the house have never been balanced and various rads have been added in a patchwork way over the years (two bay rads, two in a loft...