320 Sundancer Hot Water Heater

Discussion in 'Ask a Sea Ray Employee...(No Longer Active)' started by sr290da, Oct 27, 2009.

  1. sr290da

    sr290da New Member

    Mar 4, 2007
    north east
    2004 searay 320 sundancer
    6.2 inboards
    I have a 2004 320 Sundancer and want to bypass the Hot Water Heater for winterization. Does anyone know if the fittings are a standard hose connection like 1/2 inch npt.

    Is it as simple as just emptying the hot water heater and then connecting the cold water hose coming in to the hot water hose going out and then reconnecting back to the heater in the spring time?
  2. skibum

    skibum Well-Known Member

    Jul 30, 2007
    Perry Hall, MD
    2005 Sundancer 260
    496 Magnum HO
    I can't say for sure on the hose fitting size, but I believe that they are 1/2" FIP. If you measure the actual ID of the fittings, I think it measures at or close to 3/4".

    Yes, it is that simple.

    Good luck,
  3. Vince_nj1

    Vince_nj1 Active Member TECHNICAL Contributor

    Aug 25, 2008
    North Barnegat Bay
    2006 320 V-Drives 6.2s, Bow Thruster, Generator, Raymarine C80, Radar, Fish Finder
    6.2 Horizons 320HP
    I went to West Marine to buy a bypass kit and they didn't have it. ($25)

    I then went to Lowes and found what I needed. The pipe threads matched up with the same pipes used for underground sprinklers. I found a 12 inch flexible pipe with male ends on both side. I disconnected the cold going into the hot water heater and the hot coming out of the hot water heater. I used this pipe to connect the these 2 together. I opened the valve on the bottom of the hot water heater and let it drain out. I think the pipe cost $3 or $4.
  4. Alegria

    Alegria Well-Known Member

    Feb 21, 2009
    Lancaster,PA Boat: -Sue Creek, MD
    2000 410 DA
    3126 CAT
    If it's an Atwood model water heater, then they should be 1/2 NPT fittings on the tank. Atwood may have screwed on another nipple/tube onto it so you may have have to take it off and screw on your own fittings..
  5. hack4alivin

    hack4alivin Active Member TECHNICAL Contributor

    Apr 18, 2008
    Joppa, Maryland
    320 Dancer
    Twin 350 V Drives
    Yours maybe leaking.:grin:... did you get my PM yesterday:wow:

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