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Air Eliminator?

MassDave
MassDave Member Posts: 14
I just had a very old asbestos covered boiler replaced with a Buderus G115/28 (oil fired hot water, cast iron radiator setup, 1 zone w. R2107 control & room sensor). I noticed that the air eliminator that was on the old system was removed, and I don't recognize anything as a replacement in the new piping setup.

Should a system have one of these components nowadays? I want to get some opinions on whether this is required before I talk to the contractor about it when he comes by next week (it was just installed). What should I expect to be different now that I don't have one?

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Comments

  • joe_14
    joe_14 Member Posts: 138
    air

    > I just had a very old asbestos covered boiler

    > replaced with a Buderus G115/28 (oil fired hot

    > water, cast iron radiator setup, 1 zone w. R2107

    > control & room sensor). I noticed that the air

    > eliminator that was on the old system was

    > removed, and I don't recognize anything as a

    > replacement in the new piping setup.

    >

    > Should

    > a system have one of these components nowadays?

    > I want to get some opinions on whether this is

    > required before I talk to the contractor about it

    > when he comes by next week (it was just

    > installed). What should I expect to be different

    > now that I don't have one?



  • joe_14
    joe_14 Member Posts: 138
    air



    dave every system should have some type of air elimanation. this is done by using an air scoop with an air eliminator screwed into the top of it. another way is to use a spirovent which works much better than an air scoop. another way is to use the steel compression tank as your air eliminator. if your system was very old it is possible that the contractor who installed new boiler used this tank as you air scoop. i would ask him to show you how he has provided for air elimination. it is very important.

    good luck joe.g
  • john@TR
    john@TR Member Posts: 26
    air

    The air doesn't necessarily need to be eliminated, just managed. If the installer left the steel compression tank in the system then the air will be directed into it. The piping to the tank needs to be pitched correctly and the circulator pump needs to be "pumping away" from the tank. As long as he did those two things you'll be alright. You may just have an air seperator that you don't recognize as such, too.
  • Mark Eatherton1
    Mark Eatherton1 Member Posts: 2,542
    Upright cast iron radiators...

    that are bottom tapped for the supply and return ALSO make great air seperators. If I'm doing a gravity conversion using cast iron boilers, I don't necessairly have to use an air seperator. Once you manually bleed the system, the amount of "free air" that comes from the water is minimal, held up in a place where it doesn't affect system operation and can be vented again in a year.

    ME

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