when i fire up the boiler it sounds like all the pipes just bang, if this is air how do i let the air out. the water also does not seem to get very hot yet the pipes are to hot to touch. any ideas.

csib@hotmail.co.uk, August 2008

Sounds like air in the system and may happen because system has been off for a while.Fire up the system and go to each radiator in turn with a bleed key and old towel. Undo the bleed screw a little and water or water and air will hiss out.I did say hiss,honest. Do this to each rad in turn and see the outcome. It may need doing a few times to completly bleed all the air out. Caution you don't get scalded as the water should be well hot.

Jim M, August 2008