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Thread: Milestone 370FLMB Winterization

  1. Print this Post   #1
    Junior Member
    Join Date
    May 2020
    USA - FL

    Milestone 370FLMB Winterization

    Hello all. Trying to winterize for the season, and for the life of me, I can't seem to find the water heater bypass valve. My water heater is aft over the axles, but there is seemingly no way to access the backside of the wh. Does it make sense that the valve might be located in the front basement? My goal is to send anti-freeze through the lines, but having a bypass valve so far from the wh would seem ineffective. Anyone happen to have a diagram or knowledge of the system? Appreciate any feedback.
    Jeremy and Carly
    2020 F-350
    2020 Heartland Milestone 370FLMB
    B&W Companion 20k hitch

  2. Print this Post   #2
    Moderator danemayer's Avatar
    Join Date
    Jul 2010
    USA - CO

    Re: Milestone 370FLMB Winterization

    Hi avigator,

    If you have a Universal Docking Center (UDC), where all the water connections are made, it would be in there. But you may not have that. In that case, start on the interior, near where the water heater is located. On some trailers, access is by way of removing a drawer or a panel held in place by screws.

    Dan and Ann Mayer & fur babies Callie the Rally Dog and Cooper
    2011 Landmark Rushmore
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  3. Print this Post   #3
    Junior Member
    Join Date
    Sep 2020
    USA - FL

    Re: Milestone 370FLMB Winterization

    In regards to the location of the water heater, it is under the bottom bunk in the “bunk room”. I believe there is also a drain for the water in the front of the access panel outside the RV. Hope this helps, feel free to reach out with questions. I have the same rv as you do.

    Sent from my iPhone using Tapatalk

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