Water heater replacement

Discussion in 'General Maintenance/Repair Questions' started by Jeff Delbuono, Apr 1, 2019.

  1. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Looking for some help. I have a 1998 290 sundancer and n
     
  2. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Looking for help. I have a 1998 290 sundancer. Looking to replace the hot water heater. It has a atwood ehm6 tank in it now. Its a 120volt 6 gallon. Been loooking for one for a bit and they all seem to be discontinued. Has any one replaced this and with what.
     
  3. juggernaut1

    juggernaut1 Active Member

    851
    Apr 19, 2015
    Perth, Western Australia
    2006 38 Sundancer
    8.1S / ZF 63V Drives
    Check out the Kuuma brand which look pretty close to the Atwood specs.
     
  4. Handsome Transom

    Handsome Transom Active Member GOLD Sponsor

    304
    Jan 26, 2018
    Penetanguishene Ontario Canada
    1989 SeaRay Sundancer 268 454 Bravo
    454 Mercruiser bravo drive
    Plus one on the kuuma
     
  5. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Thanks. Been looking for awhile. Saw then just was not sure if they were good or not. Tight fit and only want to do once
     
  6. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Next question. My old unit does not have the heat exchange hook up to the motor. Should i just replace with same style or hook up to motor. Any thoughts on pro or cons
     
  7. Handsome Transom

    Handsome Transom Active Member GOLD Sponsor

    304
    Jan 26, 2018
    Penetanguishene Ontario Canada
    1989 SeaRay Sundancer 268 454 Bravo
    454 Mercruiser bravo drive
    Absolutely it is so nice to have hot water after about 15 20 min run time . Even if you only use it for washing grubby kids with worm fingers . I did not have a water heater at all on my previous boats and i am astounded at how much i appreciate it
     
    WV 320 Dancer likes this.
  8. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Thanks. Shocked that they did not put that on this boat. 1998 290 sundancer. Easy enough to add. Just a couple nipples and some hose. Hope it works for washing grubby wife too
     
    WV 320 Dancer likes this.
  9. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    Oh my... brave man you are!
     
  10. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    For grubby wife or water heater. Both are gonna be a pain
     
  11. YeOldeStonecat

    YeOldeStonecat Active Member

    204
    Jun 10, 2018
    Waterford, CT
    '97 Sundander 300
    Twin 5.7 V-Drive
    My 6 gal Atwood was shot too...stank like a thousand rotten eggs..people would run off the boat in droves if I ran the hot water. All rusted on the outside, etc (there's a thread in this forum from last fall w/pics).
    I put off purchasing the heater until Defenders big spring sale last week.
    https://search.defender.com/?expression=kuuma 6 gallon&s=1

    Sale price was ~250. I wanted to get a nice stainless Isotemp model but...figured we'll see what the Kuuma does for 1/3 the price of an IsoTemp.

    I'll probably be trying to distort myself and hang upside down and swap out the heaters in a couple of weekends. Not sure how I'll get it done, they seemed to have built the boat around the water heater.

    My tank is mounted transversely. Hookups facing port side. And mount tabs on front and back of tank so on port 'n starboard side for access to the screws.
     
  12. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    I just bought mine last night with free shipping. Side mount tabs and front hook up with frnt heat exchange. Should be a easy swap from the atwood
     

    Attached Files:

    WV 320 Dancer likes this.
  13. frosh coach

    frosh coach Member

    161
    Apr 20, 2011
    Long Island Sound, New Haven CT
    1994 300 Sundancer
    1989 230 Cuddy (SOLD)
    Twin Mercruiser 350 FWC, Alpha 1 Gen II
    I did the same thing last season, but didn't put it in yet. I plan on doing in this month. My old one is still in the boat what the PO didn't have it hooked up to the water lines. So my big project will be tracing out the lines. The good part, is it's hooked up to the engine already, so that should be easy.
     
  14. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Just did my hot water heater. Not too bad to do. Took me about 3 hrs 20190406_131957.jpg 20190406_140329.jpg 20190406_174313.jpg 20190406_131957.jpg
     
    WV 320 Dancer likes this.
  15. LUnaCY

    LUnaCY Active Member

    157
    Aug 28, 2018
    Afton, MN
    310 Sundancer 2002. Mercruiser 5.0 MPI Bravo III
    Mercruiser 5.0 MPI Bravo III
    I just replaced with an Isotherm. It was easy to get in place due to the cylindrical design.
     

    Attached Files:

    WV 320 Dancer likes this.
  16. LUnaCY

    LUnaCY Active Member

    157
    Aug 28, 2018
    Afton, MN
    310 Sundancer 2002. Mercruiser 5.0 MPI Bravo III
    Mercruiser 5.0 MPI Bravo III
    Question about the pex fittings...and it sounds dumb at first.

    I used 1/2 shark bite on the new isotherm. The old 1/2 pex tube leaked against the new fitting. I bought a new 1/2 pex tube. It fits in the new fitting but is so tight in the old fittings that I don’t think it is hitting the oring.

    Was old (17yr) pex different size than the stuff Sharkbite uses?

    I can only replumb so much.
     
  17. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    The original stuff Sea Ray used was metric... 15mm
     
    Chris-380 likes this.
  18. atrick

    atrick Active Member

    209
    Mar 4, 2017
    Penna
    1995 searay 290 Sundancer
    1990 21 maxum
    Twin 4.3 mercrusers with alpha one genII drives
    305 chevy with a alpha one drive
    I wouldn't use shark bites, I used them last year when I replumbed my hot water tank with a by-pass and noticed this year while getting the boat ready that I had 3 of the fittings leaking. Spent yesterday afternoon replacing them all with pex fittings and valves. Just seems shark bites don't hold up to vibration in a boat. Never had a crimped pex fitting leak yet.
     
  19. Jeff Delbuono

    Jeff Delbuono Active Member

    162
    Jun 11, 2018
    Edison new jersey
    1998 sea ray 290 sundancer
    5.0 efi
    Go to a marine store for boat parts. Not home depot.
     
  20. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers

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