While you wait for answers, we may have found some information which could help you.
Click here for Bolier Central Heatingravenheat HE 85T bolier water is blowing through auto air vent any ideas?
ravenheat ls 80t?
Air switch on ravenheat csi system a?
ravenheat h85t looses pressure on ch only?
ravenheat LS80 shower water not as hot as it used to be?
heating?