I have a pdaily loss of pressure in a closed circuit system as noticed on the gauge at the filling point 2 bar to 0. After exhausting all the usual options it appears there’s a leak unground with no visual sign anywhere.I’ll have to re plumb the heating. The boiler feed and return pipes are about 20 metres away. I’ve googled pipe depths…insulation required and pipe type, I guess it’s 22 mm pex is the type I’ll use. I’ve googled pipe depths…insulation required etc what is the actual type of insulation and and trench depths recommended.
Also As it stands there’s no bypass valve from flow to return only a prv at the boiler. On a closed system is the pressure tank always on the flow side.
Does it matter if the rad feeds are connected as it comes in from outside before the immersion tank flow and return.
It a simple arrangement with 6 rads downstairs. And two upstairs in series.
I’ve fixed leaks an installed pipes before but I need some guidance to give me confidence.
Thanks, sorry about the long question.
Also As it stands there’s no bypass valve from flow to return only a prv at the boiler. On a closed system is the pressure tank always on the flow side.
Does it matter if the rad feeds are connected as it comes in from outside before the immersion tank flow and return.
It a simple arrangement with 6 rads downstairs. And two upstairs in series.
I’ve fixed leaks an installed pipes before but I need some guidance to give me confidence.
Thanks, sorry about the long question.