Again, I think you're grossly mistaken about what lay people think and do. Just my opinion, but I'm not making any assumptions, whereas you're making lots.Onetap said:The DIYers often don't know but, more importantly here, they know that they do not know. They will research the topic, get a book or search the internet to find out.
You'd know about it if I had the hump, so wrong again. Go on - go for the hat trick...Many "Proffessional Heating Engineers" don't know but think that they do know. They get the hump if anyone has the effrontery to suggest that they don't know, as you have.
On this point, I completely agree.The OP asked a question about something outside his experience.
Now he knows more about it.
It's not my job to correct every poster on everything they do, or might, get wrong.You didn't correct the poster who'd made a mistake about the function of the check valve.
And there it is - that third groundless assumption. Well done.
The only interesting thing about that statement is that you appear not to believe it, and are just making a weak attempt at a snipe.You're not a professional, you're not an engineer, you're not competent and never will be.
Deal with it.
If an engineer is someone who, when asked for clarification, makes wrong statements based on tenuous assumptions, then clearly you're much better qualified that I am, and I'm entirely comfortable with that.