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Air Gap on Condensate Drain

dcwittlo
dcwittlo Member Posts: 11
edited November 2024 in THE MAIN WALL

Is it necessary to have an air gap on a condensate drain? The Weil-Mclain EcoTec boiler has a condensate trap to prevent combustion gasses escaping into the house and this is followed by an acid neutralizer. Then it goes to a 30 ft long, 1" PVC drain which dumps into the sump. This 1" PVC is shared with my water softener which does have an air gap. Should there be an air gap between the neutralizer and the 1" PVC? It cannot share the air gap with the softener because it is too far away.

Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,237

    I always put an air gap on the condensate as the drain comes out of the boiler. If you don't put one in and it gets clogged, water will back up into the heat exchanger and cause all sorts of trouble.

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    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
    Big Ed_4
  • Big Ed_4
    Big Ed_4 Member Posts: 3,067

    Yes , if not you can throw a error code …

    There was an error rendering this rich post.

  • dcwittlo
    dcwittlo Member Posts: 11

    OK. I thought so, but I didn't want to make things more elaborate than necessary. Thanks for the info.

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