R
Robtheplumb
Hi
We have a client with a problematic solar DHW system, we think we have the answer to the problems, however would like to put it on here to see what you all think!
The system is a Smart energy set up, 30 evacuated tubes, on a ssw facing pitched roof, convaluted stainlees pipework in siamesed insulation, pumping station in loft, and 1200x450 solar cylinder.
The problem is, that although the system has worked well in the past, over the last couple of years the customer has been experiencing banging coming from the loft, and eventually a faliure of the system.
A collegue of ours has had a look at the system, and ended up stripping and cleaning out the pump and pumping station, on doing this small hard white balls were found to be obstrucing the pump, these were removed, the system refilled, and all was ok for a short while, but now the problem persists.
The controller is functioning as it should, the pump cuts in and out ok, and the system holds pressure.
Our thoughts are that the system is a bit on the tube heavy side, and that it is boiling up during prolonged sunshine and breaking down the fluid due to high temperatures in the system, imho, 20 tubes is more than adequate for this size of cylinder, in this situation.
Would be interested to hear eveyone elses thoughts!
We have a client with a problematic solar DHW system, we think we have the answer to the problems, however would like to put it on here to see what you all think!
The system is a Smart energy set up, 30 evacuated tubes, on a ssw facing pitched roof, convaluted stainlees pipework in siamesed insulation, pumping station in loft, and 1200x450 solar cylinder.
The problem is, that although the system has worked well in the past, over the last couple of years the customer has been experiencing banging coming from the loft, and eventually a faliure of the system.
A collegue of ours has had a look at the system, and ended up stripping and cleaning out the pump and pumping station, on doing this small hard white balls were found to be obstrucing the pump, these were removed, the system refilled, and all was ok for a short while, but now the problem persists.
The controller is functioning as it should, the pump cuts in and out ok, and the system holds pressure.
Our thoughts are that the system is a bit on the tube heavy side, and that it is boiling up during prolonged sunshine and breaking down the fluid due to high temperatures in the system, imho, 20 tubes is more than adequate for this size of cylinder, in this situation.
Would be interested to hear eveyone elses thoughts!
