I've recently had my old Potterton Netaheat boiler / hot water cylinder / header tanks ripped out and a new combi boiler installed.
I now have mains pressure hot water - Does having a combi boiler mean that the central heating system is now also mains pressure ? Also, is the central heating circuit still a closed circuit ? ( If it is I need to check with my installer that he dosed the water. )
Thanks
I now have mains pressure hot water - Does having a combi boiler mean that the central heating system is now also mains pressure ? Also, is the central heating circuit still a closed circuit ? ( If it is I need to check with my installer that he dosed the water. )
Thanks