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How are we supposed to vent this thing?

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crash2009
crash2009 Member Posts: 1,484
in Strictly Steam
I have been helping a2shutt get an existing diagram on paper.  Now that it's on paper.  It is not like any one-pipe I have seen before.  It is neither counterflow, nor paralel, but a combination of the two.  Basicly its high on both ends with a drain (which is vented in the middle)  Looks like it works, just not sure where to put the G2's



The boiler is an IN-9, there is 1.25 cubic feet in Main 1 and 3.75 cubic feet in Main 2.  Existing vents 4 Hoffman 75's

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  • Dave in QCA
    Dave in QCA Member Posts: 1,785
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    Looks Great

    Crash, excellent drawings for a strange system.  If I were doing it, I would put a the Gortons at the point furthest from the boiler.  The mid point where you wnat to maintain some venting by the condensate drips, I think the Hoffmans would be fine.
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
  • Steamhead
    Steamhead Member Posts: 16,835
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    I'd put all the vents at the ends

    so you would have all the vent capacity available to all the piping. No need to have vents at the drip points. 
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • crash2009
    crash2009 Member Posts: 1,484
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    This post has been discontinued

    Will be continued here  http://www.heatinghelp.com/forum-thread/139857/Looking-for-input-on-my-one-pipe-system
  • Dave in QCA
    Dave in QCA Member Posts: 1,785
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    I stand corrected

    It seemed somehow that there would be some benefit from having a vent where the drip leg is, but of course there really isn't. 

    Thanks Steamhead.
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
This discussion has been closed.

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