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Combustion analysis

bguthrie
bguthrie Member Posts: 1
in Gas Heating
Is there any approved or quality method of sealing a drilled hole in PVC for a combustion analysis test on a condensing appliance? I find a lot of them with foil tape, duct tape, and some just left open and this is a positive pressure vent.

Comments

  • Unknown
    Unknown
    PVC test hole

    I usually drill & tap (for 1/4" NPT), do my analysis, then install a SS solid core pipe plug.
  • Tim McElwain
    Tim McElwain Member Posts: 4,641
    Dave is correct

    just add a little RTV high temp sealant to the bolt threads. Our inspectors around here accept that. It is actually best to do it in an elbow ahead of time then just tap the PVC after it is inserted into the elbow and glued.
  • SpeyFitter
    SpeyFitter Member Posts: 422
    IPEX's Approved way.

    Basically just a bushing & a plug: http://www.ipexinc.com/Content/Products/Product.aspx?IsDownload=true&FileId=1301

    There was an error rendering this rich post.

  • Empire_2
    Empire_2 Member Posts: 2,340
    Me too:

    I use 1/4" tap.  I have a nice tap set that you can purchase almost anywhere.  This fitting will never accidentally pop out.
This discussion has been closed.

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