Hot Water Heater

Discussion in 'Sailboats' started by ORION1, Aug 4, 2005.

  1. ORION1
    Joined: Jun 2005
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    Location: Slidell, Louisiana

    ORION1 Junior Member

    Anyone have any experience with taking water from engine to heat Hot Water Heater on the Yanmars.

    We have a Yanmar 3GB which has, according to Yanmar, plugs for the purpose but they advise that the threads on Yanmars are British. I guess I will need British threaded barbe hose fittings.
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    The threads are NPT. You can get them at any hardware store.
     
  3. ORION1
    Joined: Jun 2005
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    Location: Slidell, Louisiana

    ORION1 Junior Member

    Thanks so very much Gonzo. I was confused as it was the Yanmar Dist. here who advised me of the British threads. I will pull one of the plugs and take it to the hardware. I am sure that you are right as that seems so logical.

    I am not sure what NPT is, but I have asked several hardware stores in this area for barbed fittings with British threads and they have looked at me with that look of, well you know the look I'm sure.

    Earl
     
  4. gonzo
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    Location: Milwaukee, WI

    gonzo Senior Member

    NPT National Pipe Thread. We call it Standard, the British call it Imperial.
     
  5. ORION1
    Joined: Jun 2005
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    Location: Slidell, Louisiana

    ORION1 Junior Member

    Gonzo, well I thought we were right but it turns out that the threads are BSP not NPT. I have secured fittings that fit but may need more to hook it up to the heater.
     
  6. gonzo
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    Location: Milwaukee, WI

    gonzo Senior Member

    Thanks for the info, and sorry about misguiding you. I changed a block drain plug in a Yanmar about a month ago and it was NPT.
     
  7. ORION1
    Joined: Jun 2005
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    Location: Slidell, Louisiana

    ORION1 Junior Member

    Thank You GONZO for you interest in my problem, you did not misguide me at all. I and others thought you were right as that is so logical. Wish you were right too as these BSP fittings are tough to find. It seems kind of silly on a Japanese engine, don't you think?
     
  8. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    The odd thing is that the plugs I changed in a 1GM were standard. What model is yours?
     

  9. ORION1
    Joined: Jun 2005
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    Location: Slidell, Louisiana

    ORION1 Junior Member

    It is an 03 3GM. Maybe they are like everyone else mixing types.
     
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