thanks very much for your reply. Being a complete novice, do you think the stiff tap should be turned anti clockwise and should I just apply a bit more pressure? I was worried I might break something!
Hi,
I've moved in to a new house which has a system boiler and hot water tank (previously had oil combi boiler). The previous owners have very unhelpfully left no instruction manuals for the system, so we are unsure as to how everything all works.
We have had a service undertaken on the boiler...