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what the heck was this plumber thinking

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newagedawn
newagedawn Member Posts: 586
edited September 2017 in THE MAIN WALL



be in the field a long time and i never seen a trap on a hydronic system
"The bitter taste of a poor install lasts far longer than the JOY of the lowest price"

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  • bob_46
    bob_46 Member Posts: 813
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    I think he figured any air that wasn't separated in the boiler and dispelled through the automatic air vent would go straight up and not go into the supply main because of the trap. Notice it goes straight up and reduces to 1/2" and connects to a conventional expansion tank. He also has a air scoop and a diaphragm tank on the supply main so he has three ways to get rid of air. I wonder where the pump is? This guy should buy Pumping Away and save some money and headaches.

    There was an error rendering this rich post.

    New England SteamWorks
  • HVACNUT
    HVACNUT Member Posts: 5,844
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    Air control and elimination in one fancy setup. Fabulous. How come nobody else thought of it? Lol.
    And a master with a torch as well.
  • Ironman
    Ironman Member Posts: 7,376
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    The boiler has a tankless coil. Maybe he was trying to create a thermal trap to stop heat migration. It's about 16" too short, but he did try. :#
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,556
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    Looks like a refrigeration suction line trap
  • hot_rod
    hot_rod Member Posts: 22,189
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    A compression tank is an air management system, a diaphragm tank is an air elimination, not sure how they could work together unless the compression tank is disconnected?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Ironman
    Ironman Member Posts: 7,376
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    hot rod said:

    A compression tank is an air management system, a diaphragm tank is an air elimination, not sure how they could work together unless the compression tank is disconnected?

    You're absolutely right. The compression tank is still connected. I wonder if the valve is open or closed.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • hot_rod
    hot_rod Member Posts: 22,189
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    Maybe an attempt to build an Airtrol fitting with copper ells? :)
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Ironman
    Ironman Member Posts: 7,376
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    hot rod said:

    Maybe an attempt to build an Airtrol fitting with copper ells? :)

    That might be it.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • j a_2
    j a_2 Member Posts: 1,801
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    That can't be a plumber, that did that...it has to be one of them oil techs,....lol
  • newagedawn
    newagedawn Member Posts: 586
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    i think plumbers should stick to what they know best, crud runs down hill,lol
    "The bitter taste of a poor install lasts far longer than the JOY of the lowest price"
    j a_2AMservices
  • HVACNUT
    HVACNUT Member Posts: 5,844
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    > @j a said:
    > That can't be a plumber, that did that...it has to be one of them oil techs,....lol
    >
    >
    > yeah, where's the flare adapter for my push/pull pump?

    I wonder how often the expansion tank needs to be drained with auto vents on the system.
  • JUGHNE
    JUGHNE Member Posts: 11,068
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    A system I service has the old compression ceiling hanging tank.
    It would often get water logged. Someone had put an air vent on the main supply. There were also small auto vents on some units.
    After removing these and repacking the sight glass valves, the air head has remained pretty constant over the years.
    The sight glass packing was probably the main issue, but in this case shown eventually the system will lose all air thru the auto vent.
    Then the compression tank would be ineffective and pretty heavy.

    Maybe the new tank is too small for the system and he is trying use both??
    newagedawn

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