I think this is a new topic- I am a new member and found the site by referring to repair work that someone was doing on the same type of boiler, but I gather that I shouldn't add my problem to that thread.
I have, idiot that I am, inadvertantly (turning mains water back on whilst feed water...
I have inadvertantly (turning mains water back on whilst feed water tap to boiler system is open) sent my boiler pressure upto 3 bar. I see mention of a manual release valve in the post above, but no idea what it is or looks like... please...
Is it safe to use the boiler as it is
Do I need...