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  1. #1

    Dual oil tank piping

    I am installing two 275 gallon oil tanks. What is the reccommended piping arangement for fill, vent, and burner hookup?

  2. #2
    Join Date
    Sep 2002
    Northeast Ohio
    Depends, side by side or end to end. Basically fill into first tank, cross over to second tank with the vent alarm and gauge in the second tank. 1/2" cross over on the bottom using heat melt fuse valves on each tank. 1 filter off the bottom cross over with supply line going to the appliance.
    A good HVAC tech knows how, an educated HVAC tech knows why!


  3. #3
    Join Date
    Jan 2004
    Lancaster PA
    I remember a home owner DIYing his own 2 tank set up. He forgot what he was doing, and put the vent alarm in the wrong tank. LOL
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    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Jan 2012
    Broomall, PA
    2 2" fills, 2 2" vents, no copper. I don't like/recommend piping them in series, even though it's not against code in most places. If your going with Roth tanks or equivalent, they make manifold piping for supply, vent, and oil lines.

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