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Thread: Marathon Hot water heater drain and access

  1. #1
    Join Date
    Feb 2018
    Location
    conifer
    Posts
    134

    Default Marathon Hot water heater drain and access

    I have done several forum searches and cannot find- how to access the water heaters, and how to drain. need to figure outgood way to winterize as I do not have heated storage here in Colorado (yet).
    1997 Marathon
    Thanks

  2. #2
    Join Date
    May 2012
    Location
    Beverly Hills
    Posts
    4,652

    Default

    Can you access the hot water heaters? Marathon and Country Coach installed two 12 gallon hot water heaters. If this is what you have, they have drain spigots on them.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  3. #3
    Join Date
    Feb 2018
    Location
    conifer
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    134

    Default

    I do not know where they are - or how to get to them. The Marathon has the large panel with all the water circuits with individual shutoffs on that panel. That panel looks very involved to remove.

  4. #4
    Join Date
    Mar 2018
    Location
    Tres Pinos
    Posts
    13

    Default

    Water heaters should be directly across from the water bay cabinet that you referred to, in the curb side bay.

  5. #5
    Join Date
    Jan 2006
    Location
    Jasper
    Posts
    3,775

    Default

    Just open the pressure relief valve.

  6. #6
    Join Date
    Feb 2018
    Location
    conifer
    Posts
    134

    Default

    got it- Thanks to all. In the past on other motor home I put air into city water supply and blew out lines, after draining water heater. then poured rv anti freeze into traps.
    John Dyer
    1996 Marathon 45 with IFS

  7. #7
    Join Date
    May 2012
    Location
    Beverly Hills
    Posts
    4,652

    Default

    For Aqua-Hot owners that must winterize, don't rely on blowing the water lines out with air. Water tends to settle in the Aqua-Hot coil. If this copper line burst your repair could be around $10K. Aqua-Hot dies not sell that as a replacement part.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

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