radiator

[solemn thicket]

you should flip your radiator so tubes are up top

[zenith jewel]

Sorry mate....why?

This way all the air will be on the top of radiator (on the top inlet) without going back on circle as would if the tubes are up and whit less noise....unless I am missing something

[solemn thicket]

The loop isn't fully filled, the pump won't be saturated with water

the radiators inlet and outlets should always be above the pump

[zenith jewel]

I mean...we all saw this once a week posted everywhere...
https://youtu.be/BbGomv195sk
I know it works even with tubes on top but I am just putting tubes down to avoid noise see at 19:34 please