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Pex on commercial Boilers

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tporter0054
tporter0054 Member Posts: 1
in Radiant Heating
Im looking into the feasibility of running Pex for piping on a commercial boiler. the info Im trying to find is whether i can use a manifold to get enough BTU to my larger radiators (ie. Rooftop Makeup air with a 200000 BTU coil) the reason Im trying to steer away from copper or iron is due to the corrosive atmosphere the piping is in with large amounts of h2s gas so any idea if this would be feasible.

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  • hot_rod
    hot_rod Member Posts: 22,142
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    Uponor and Rehau are promoting large bore pex for commercial work, 2" and larger.

    Watch your pipe sizing as the id is smaller than copper tube.

    Check with them for fire stop requirements and support for horizontal runs, it takes more hangers or supports.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,524
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    And you will find it very difficult to work with. Difficult to bend

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