Air release ? in a converted gravity system

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xjmllc

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First off, forgive me if my terminology is off.

OK, I had an original "gravity" boiler system. The old expansion tank was way up in the attic. The tank/leftover pipes are higher than any radiator. I'm concerned about the air trapped in these pipes without a radiator to bleed. Do I simply insert an air release valve like the Taco slimeline hy-vent model below. Please see diagrams.

OLD SETUP

heating_p13_194x300.gif


NEW SETUP??

new.jpg


http://http://www.pexsupply.com/product_dtl.asp?pID=4551&cID=305&brand=Taco

taco%20air%20vent.jpg


thanks!!
 
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HvYhitter

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good question.. because you will never get the air out of the lines above the highest air vent in your system I am betting.
 

xjmllc

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I'm now almost certain I need to connect the pipes (based on the first picture above) it's a supply and return piping through the tank.

Still, how do I remove this air in the pipes above the highest radiator (1 floor below)????

1) Just connect the pipes

2) Connect the pipes and add an air release in between them
 
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Hey, wait a minute.

This is awkward, but...

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