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Rinnai Leaking Help

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lindylex
lindylex Member Posts: 78
in Plumbing

In this image on the right I think this is the cold water inlet. It is leaking. It is a larger diameter pipe and was wondering has anyone dealt with this type of leak before? What type of gasket is under there?

IMG_5334_U.JPG IMG_5344_U.JPG

Comments

  • GroundUp
    GroundUp Member Posts: 2,522

    Your cold inlet is the blue line entering the combi unit above and to the left of the joint in question.

    The leaker is on the space heating return. It is called a dielectric union and it uses a flat rubber gasket, this is an extremely common problem with dielectric unions. Not sure what sort of hydraulic separator is in that insulation block, but eliminating the dielectrics would be a good move if possible. If not, replace the gaskets for $10 and wait for another leak to appear.

    lindylex
  • mattmia2
    mattmia2 Member Posts: 17,117

    don't know why there are dielectric unions there. they are unnecessary and they leak.

    lindylex
  • lindylex
    lindylex Member Posts: 78
    https://forum.heatinghelp.com/discussion/comment/1896639#Comment_1896639

    Your response made me laugh! "replace the gaskets for $10 and wait for another leak to appear." Thanks that was a good one. Also thanks for information on the name of this fitting. It helped very much! Have a great weekend.

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