Recent content by holland141

Hi All, I need to get some advice before I start a bathroom refurbishment. The nature of problem is thus: - Some recent renovation work in my house ended up with the plumber/builder routing the main feed to/from the boiler to the pump and rest of the heating distribution. However, it...

re Bypass Installed the Taco Nova Setter - a manual Bypass that you can specifically set to the minimum for the boiler. This was recommended by Grundfos.

Thanks. I will be doing that later - but I'm keen to know what the theoretical 'best' approach is also....

Hello, My plumber installed an Alpha 2L 15-60 and not an Alpha 2 as requested (and thus we don’t have the autoadapt feature). I have a feeling there is less overall output now (not all rads getting as hot), as per my previous old fixed 15-60 pump – an earlier Grundfos model. I need to...

That is the situation that would occur. Would this be a significant issue? Is it going to cause excessive noise as the water gets funneled / increases velocity? Any other reasons not to do it?

Thanks. I found a very useful link to a document from the copper development association http://www.copperinfo.co.uk/plumbing-heating-and-sprinklers/downloads/pub-150-copper-tubes-in-domestic-heating-systems.pdf that made it clear how to calculate everything. I see now that you need to...

Hi, Before and after as below Using this I can see that the current 15mm was just about OK @4.1 kW, but presumably not for the current set up which needs 6 kW. I've tried to indicate where the pipes are exposed (yellow) or red (buried in wall / floor). The plumber is...

Hi Thanks doitall. Having googled what a manifold is - it seems to be a multi-point junction. If I'm correct then this would mean we'd still need to break into the wall as the supply to the rads are buried. If this is the case then we may as well expose/replace the full 15mm pipe...

Hi, We have just installed 3 extra radiators onto a branch of the heating circuit that is run off a 15mm pipe. This used to have just one rad on it. These rads are not getting as hot as the rest of the house (even after balancing). I've just read on this forum that a rule of thumb is...