We have installed the first 800m of ground loops and have decided to pressure test them. This means filling the pipework with water and increasing the pressure.
We have put 1 bar of pressure into the installed loops and will see what happens overnight.
Of course, we had to repair the water supply to start with!
We have put 1 bar of pressure (water) into the first 800m of ground loops. If this goes down overnight, we know we have a problem.