The pressure guage has dropped and I need to top up the system, but I can't see the tap. There is a flexible hose below the boiler and a black valve marked boiler - filling loop. Moving this to filling loop doesn't start the flow of water. Where is the inlet tap ?

Ian, October 2006

this tap as a tendency to block up .point tap up to boiler say to 12 o clock and the pressure should go up . if it is blocked it may fill very slowly

paul, October 2006

you should have a filling loop installed from the cold feed pipe to the ch flow pipe when the pressure drops below the correct amount turn the black handle on the valve till the guage reads 1.5 bar if it persists you have a leak somewere on your sytem check all the joints and rads to be shure ok .

tony joint south wales, October 2006