Could not get an answer to this on alt . hvac of all places:
There are many well-intentioned articles on how to bleed your basic hot wat= er radiator heating network.=20
Most recommend bleeding when system is *relatively* cool(is off or hasn't f= ired in a while).=20
Where they differ most is the starting point. =A0Some suggest moving from r= adiators closest to boiler(1st floor) to the farthest(IE 2nd flr). =A0This = site -
Does it matter?=20
Also, I was told that after a good bleed job none of my radiators should ri= ng like bells when knocked on with my fist. =A0Some of mine do, even though= they are evenly heated side-side and top-bottom. =A0Does that indicate tra= pped air bubbles?=20
And how do I remedy those?