Recent content by Grundfos1

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Not really considered flow restrictors, not sure how to use them, its not just a shower fed by the thermastatic valve, its also a bath filler,to be honest I have not tried the shower part (not finished installing that, only the bath filler so far) I have a few more things I can try. Will...

To be honest I have got to the point where I'm starting to give in. I have only just replaced the 22mm, if I go for 28mm I'm still going to have to reduce to 22mm to get into the tank. The price of all the 28mm parts will probably cost me more than a lower capacity pump, especially if I can...

Yup....looks that way. Although I find it hard to believe a combined 50 gallon CW tank can't fill up a 25 Gallon HW tank quick enough. Anyone want to swap a 1,5 bar pump for a Grundfos Niagara 2.0 Bar Twin Impeller one? :cry:

OK.... have replaced the tank feed to the hot water cylinder, to just above the drain point in the original photo. still have exactly the same problem!! Any other ideas?

Thank you mogget, When I carried out your test, the hot tap on the floor below had zero flow out of it approx 30 seconds before the pump struggled. So this has to prove the hot water tank is not being filled up quick enough. The pictures below show the HWT feed (the 22mm Copper) The stop...

Anybody know any good plumbers in Haverhill? on the Suffolk/Essex/Cambrdige border

Ok, so far today I have done the following tests to test out some of the suggestions you guys have made: I turned all water heating off and ran off any stored hot water, so all that was present in the hot water tank was cold water, selected the "hot side" of the mixer and ran the pump...

I was wondering that, the water is very hot, I have turned the immersion down to 60 (it was up at 80), but obviously that only applies when its in use. The boiler has no temp setting for the hot water. Thanks all for your great help... gives me many avenues to attack.

Other pics are here

OK, will move it , however that's not the cause of the original problem I guess