turn boiler to 0.
using filling loop under boiler raise pressure to 2 bar.
make sure all valves are open on radiators, trv and lock shield end.
starting downstairs bleed one rad at a time until full then return to boiler to check pressure.
continue to bleed downstairs and return to boiler between bleeds. when pressure drops, top up again before bleeding next rad.
when downstairs is done stroll round upstairs doing the same, bleed check pressure top up if necessary.
when you have a couple left to do allow pressure to drop a bit more as when you've fully bled the system you'll want to end up with boiler on 1.5 bar.
turn boiler ch dial to low and turn to ch+hw on selector switch. allow boiler to run until you hear ignition then turn back to 0 on selector switch for a couple of minutes. (should get a bit hissing from boiler air vent)
turn back to ch and keep it on low and see how she runs.
after running on low for a bit allow to cool and re-check pressure as you'll probably have dropped a bit from the auto air vent. When cool, re-set to 1.5
turn boiler ch dial back to required setting after boilers been running for a bit.
thats about as failsafe an explanation as i can give.
iain
November 2008
howtomendit.com for free repair help, information and advice.
