Have concrete slabs heated with an HTP boiler. 4 manifolds (2 supply, 2 return w/shutoffs). Had a loss of pressure and low water pressure error on boiler. I have isolated the leaks off the manifolds. Yeah, more than one. They are running city water through this to heat the concrete at a car wash in the hand bays. No no.
Question: Is there anyway to fix those leaks? They're running underground through hose...looks half inch. Thx