I have a gas boiler for my hot water baseboard heat. I had the two automatic bleeders replaced today. On the box of the bleeders it said that after filling the system with water, to open the bleeders slowly so air scale and dirt would not rush up into it. I noticed the plumber opened them very quickly and all the air quickly "pissed out". I asked him about what it said on the box and he said "Oh no, you don't have to worry about that" I figured he knows what he's doing, but now I'm worried they may be clogged and won't work properly if they need to purge air from the system. Is this something to worry about, or is it not a big deal? Thanks.