rikakka

Manage to go round to and re trace the pipe work. It's definitely piped as the following Mains Stopcock 22mm run maybe around 4m up to the loft Pressure gauge Check valve Prv After the prv it's a teed into tank one Then tank 2 Then into a tee one end going to the combi the other back down to supply the taps. I've attached a sketch to help. Plumbing.pdf

I found these instructions after Googling The code on the tank. For tanks installed on mains’ pressure, the tank precharge should be set equal to the mains’ pressure. But that conflicts the advice of a bar to 1.5 below and am not sure how it would fill if the vessel was set the same as the mains? Although I am no expert and probably don't fully understand the system. Tank-Installation-and-Operation-Manual-M-MT1_EN.pdf

Yeah the vessels have been empty when setting the pre charge. If the accumulators are set correctly then could to be an issue with the plumbing? The whole house is 15mm and it looks like it branches first for the bathroom, next for the utility and ensuite then the kitchen looks like it's last. Maybe 15-20m away from accumulators.

We have followed the pipe work and there is definitely no branching off the mains before the accumulator. All the isolators are open, but maybe one is faulty?

Yeah I found that information, charged it like that but it didn't seem to make much difference, certainly didn't make a difference with the kitchen tap?

I assumed they were off due to the sale. I think the house lay empty for a while. Air comes out when I push the air valve on top.

Hi everyone, Looking for some help/advice with a water accumulator at my brother's new house. He has a problem when more than one tap is open the amount of water in the kitchen is poor. We had a look around the system and found two 100l accumulators in the attic isolated. So we put them on but nothing seems to have changed. I had a look online and have tried to change the pre charge on them but not sure what it should be set at really. The system looks like it's Mains Stopcock 22mm pipe Check valve Prv set to 3bar 2 accumulators Then 22mm to the combi boiler where it Tees off to the boiler and the cold water system all 15mm And then the hot system is all 15mm The static pressure is around 3bar according the the pressure gauge before the prv. The dynamic pressure looks around 2.5bar according to a gauge after the accumulator and the system provided about 12lpm with one outlet open. Any help with setting the accumulators would be great. Thanks Richard

Hi everyone. Just signed up. Looks a very good and well informed community. Looking forward to getting and maybe giving some help