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    Water Heater Question

    Hi Group, We need to replace the water heater on our Carver and I run across this on Evil Bay. The seller doesn't know if it has a heat exchanger. It's possibly a Seaward. Being Stainless steel is a plus and the mounts are right plus the price isn't bad even with shipping added in. I thought that one of the members might have some insight as to brand or features. Here's a link to it. https://www.ebay.com/itm/25325732098...84.m1436.l2649
    Jim
    1975 2865 Carver Santa Cruz
    Twin 215hp 302 Ford Waukesha
    Twin Straight Shaft Drive
    Tow Vehicle 2002 Ford F250 Superduty
    7.3L Powerstroke
    Boise, Id

    #2
    Yeah, it does have a heat exchanger. It’s the round fitting with the double pipe ports. What disturbs me is the pressure valve is mounted to the hot water out fitting. That will do no good if there is an issue and the valve opens.....into the hot water pipes that are turned off? It just doesn’t look like the USCG would be happy and I doubt it meets ABYC rules.
    P/C Pete
    Edmonds Yacht Club (Commodore 1993)
    1988 3818 "GLAUBEN”
    Hino EH700 175 Onan MDKD Genset
    MMSI 367770440

    Comment


      #3
      Yes, it looks to be a heat exchanger style.
      Pete, I believe most if not all marine water heaters have the relief valve on the outlet. That is a strange looking relief valve though.
      https://www.westmarine.com/water-heaters
      Joel
      1987 3818 Hino 175
      "Knotty Girl"
      Prince Rupert B.C.

      Comment


      • canoel
        canoel commented
        Editing a comment
        In looking closer most do have a separate relief.
        As Dave said it is ok to T into the outlet, but this one does not look correct.

      #4
      That doesn't look like any TPR valve I've ever seen, perhaps it's a different style?? Looks more like a brass bushing threaded in with a small hose adapter on the end. The other valve on the inlet side appeers to be a simple check valve.
      A TPR can be T'd into the exit (hot) side of the tank but must have its own path of open relief.
      Dave
      Edmonds, WA
      "THE FIX"
      '93 2556
      Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

      The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
      Misc. projects thread
      https://www.baylinerownersclub.org/f...56-gctid789773

      Comment


        #5
        After some research it appears as though a similar style of relief valve as this one is used in tankless systems, as well as some solar systems.
        As Pete mentioned it may not be USCG approved, but maybe it could be retrofitted.
        Joel
        1987 3818 Hino 175
        "Knotty Girl"
        Prince Rupert B.C.

        Comment


          #6
          Not sure if i would buy something that is an unknown brand with questionable fitting/valves. There are a ton of different brand name 6 gal approved marine water heaters to choose from. I replaced a kumma with an attwood this past summer. Not expensive at all
          Doug
          1995 2859 -extensively rebuilt/restored 2016/17
          496 big block - Bravo ll leg
          The Doghouse
          Prince George BC

          Comment


            #7
            Thanks for the comments. I did notice that there didn't appear to be a pressure relief valve either. I'll probably go with the Kummu from Fisheries Supply in Seattle. They offer free shipping with an order over $99 which is a big plus. Jim
            Jim
            1975 2865 Carver Santa Cruz
            Twin 215hp 302 Ford Waukesha
            Twin Straight Shaft Drive
            Tow Vehicle 2002 Ford F250 Superduty
            7.3L Powerstroke
            Boise, Id

            Comment

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