Sime super 90 boiler- accidentally upping pressure

[Alejandro]

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 tap to boiler system is open) sent my boiler pressure upto 3 bar. I've seen mention of a manual release valve in that other post , but no idea what it is or looks like... please...

Is it safe to use the boiler as it is and

Do I need to somehow (how?!) reduce the pressure back down to just above 1 bar where it was?

All this caused by trying to fix a tiny weep on incoming main stoptap! Arghhh! Any advice or help please, thanks

 

[MANDATE]

Try bleeding a radiator and let the pressure reduce.
Water expands when heated and pressure will rise and if it reaches about 3 bar the pressure relef valve will open. I believe they are not very good at sealing correctly after opening so best to avoid it.