H
Heating-eng
Agreed. I can't ( unfortunately ) say I learn something EVERY day about my work, but frequently; all experts do. Those who don't clearly don't keep up with the latest developments. ;-)
As to why I call the man a fool: what else would you call an amateur who thinks he knows better than a professional when his errors are so obvious that all anyone needs to do is rtfm to see what the facts are?
I have worked with central heating all my working life ( 21 years ) and I do not know everything and come on these forums for help.
Calling the guy a fool is uncalled for in my opinion.
Maybe just anwsering the question correctly with the facts would of been much better, this would also assist the plumbers and heating engineers that may of forgot the correct temp.