How severe is the leak to my tankless WH?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by SammyClemens, Mar 25, 2020.

  1. SammyClemens

    SammyClemens New Member

    Joined:
    Mar 25, 2020
    Location:
    California
    Hello --

    I'm a homeowner and my Navien NCB-E Condensing combi-boiler has a small leak at the fitting (bushing? apologies for any incorrect terminology) where the main heating return line goes back into the boiler. I know it's not condensation because it drips from the threading, leaving maybe one to two tablespoons of water on the floor per day. Some days there is none at all.

    Is this an urgent problem? It's been like that for a couple months. Given the current state of things my normal plumber is not available, so I'm wondering if I can wait until he is working again, or if this is the kind of thing that will get worse if not addressed quickly. The water on the floor is not a problem, if it stays the same as it has been for the last few weeks... it's in a utility room with a sealed concrete floor.

    Any thoughts are appreciated!

    (If it's not clear from the image, it leaks just below where the yellow hose ends on the right...the discoloration is rust and moisture)

    boiler leak.jpg
     
  2. fullysprinklered

    fullysprinklered In the Trades

    Joined:
    Jun 15, 2014
    Occupation:
    self-employed plumber-electrician doing residentia
    Location:
    Georgia
    That's a union. You may be able to just tighten it up a bit.
     
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  4. SammyClemens

    SammyClemens New Member

    Joined:
    Mar 25, 2020
    Location:
    California
    That worked, thanks!
     
  5. fullysprinklered

    fullysprinklered In the Trades

    Joined:
    Jun 15, 2014
    Occupation:
    self-employed plumber-electrician doing residentia
    Location:
    Georgia
    I like them easy ones.
     
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