Its been installed for four days? Why are you even messing around with it? Why are you trying to vent or even open it for that matter? Also The magnaclean doesnt need vented. Stop messing with things you know nothing about! And im sure when it starts leaking you will blame the installers!
I'd give that a 2/10 for useful. And an 8/10 for patronising. You go ahead with the 'spleen'.....doesn't bother me...
The magnaclean doesnt need vented
Do you mean it doesn't need venting....?
Well it does, but only when you clean it. Which you might do if you wanted to see how much gunk it should not have collected so recently after an install. Which is off topic, but you did ask....
Not sure what you are thinking I am thinking about venting it...but your further leap (you are welcome to it-I couldn't care less

) to prognostications of leaks and unfair claims to installers..... seems a common theme among a minority fixated on 'bashing' rather than helping....yawn.
It's not really what the place is all about is it?-... DIY'er raises a question about something that's smeared and set, covering a valve, making device not work as it should. Then they post that it's fixed and
ask whether they should mention it to installers, and
if it might
not be what it appears to be.
Suffice to say I read (prior to posting) a fair bit about these units and the fun and games to be had with o-rings and threads crossing, leaks etc etc.
Trades are clearly sick of all being tarred with the same brush as a minority of their number who are dishonest/corrupt/inept. Same as any group/trade/profession. But,... if I balls up something, what would you know about my integrity and the likelihood of my deceiving/defrauding a tradesman by claiming otherwise.
Your slur, I think evidences what I am saying above. In any case, why you did it, is
your problem and reflects badly on you.