I have a Flexicom CX boiler. The water pressure was a bit too low, so I used the filling loop to increase it. But now it's too high (~2.5 bars). How do I drain the excess? Thanks!
on the 22mm flow and return valves under boiler you will see a drain off point. These can be opened by the square headed valve. Use 7mm open ended spanner or an 8mm ring spanner. A hose can be attached if required to drain nozzles.
Andy, July 2009
From radiator air bleeding key or if you have drain cock
