Can anyone advise me if the auto air vent that sits near the hot water storage tank in airing cuboard should be open or closed during normal operation?
I know it should be open when draining/filling the system but am not sure whether leaving open is contributing to air being drawn into the system causing all sorts of side effects, mainly noise and constant bleeding of RADS.
I know it should be open when draining/filling the system but am not sure whether leaving open is contributing to air being drawn into the system causing all sorts of side effects, mainly noise and constant bleeding of RADS.