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Drainback Combi-system Photos

Martin Romero
Martin Romero Member Posts: 40

For some time, I've been meaning to post some photos of my Drainback Comination System.  I'm grateful to this forum for all the design help I received while putting this system together.  The system has seemed to work well (based simply on amount of Propane used), but I'll need a few years to get some strong data.

There's nothing like putting a system together to gain experience.  Clearly, If I could do it all over again, I would research more and probably change a couple of things.

I welcome any questions and am eager to help if I can.

Martín Romero


  • hot_rod
    hot_rod Member Posts: 22,144

    nice to see more solar thermal installs posted.

    Consider an electronic solar control. Just about all brands allow you to do data logging or heat metering. That would give you a good idea on what the system is 'harvesting" for you.

    Be sure you have adequate bracing and mounts on the collectors. Those flat roof installations can catch a lot of wind. Some installers add a 3rd brace on the end collectors, especially on 8 and 10 footers.

    Thanks for the pictures.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
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