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  1. #1
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    Hot water bypass and "un-wintering "

    So this is my first spring trip with this 2017 303RLS. The dealer winterized it and I'm heading out on our first trip of the year. I'll drain everything when I get set up at the campground. But of all these knobs which is the hot water bypass? Don't want to flush the antifreeze into the hot water tank. The knobs are all set to winterize at this time.
    Thanks.
    "Never give up, Never slow down, Never grow old, Never ever die young"
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  2. #2
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    De-wintering and hot water bypass

    Posted this in the plumbing section but no response so I apologize for reposting here but time is crucial:
    Hot water bypass and "un-wintering "
    So this is my first spring trip with this 2017 303RLS. The dealer winterized it and I'm heading out on our first trip of the year. I'll drain everything when I get set up at the campground. But of all these knobs which is the hot water bypass? Don't want to flush the antifreeze into the hot water tank. The knobs are all set to winterize at this time.
    Thanks.
    "Never give up, Never slow down, Never grow old, Never ever die young"
    (James Taylor)

    2019 Grand Design Reflection 320MKS
    2012 GMC 2500HD
    B&W Turnover ball
    Anderson Ultimate Hitch

  3. #3
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    You will see a cold line (blue) going in to the WH, and a red line coming out. Each of those has a valve. You will also see a line that runs between them and it has a valve also..this is the bypass line. When you are bypassing the WH, the bypass valve will be in line with the bypass line (open), and both CW and HW valves will be off (valves perpendicular to line), preventing any water from entering the WH. When you are NOT in bypass, HW and CW are open (inline with line), and bypass is closed (valve perpendicular to line).


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  4. #4
    Rolling Along RVRunners's Avatar
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    For Nautilus P1 it is the red handle. If you drain at the low points first you should be good. We dewinterized this way and had no problem with hot water. Good luck!


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  5. #5
    Long Hauler Canyonlight's Avatar
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    Captain - trust you have the Nautilus P1 system......attached is the P1 handle routing guide which states the RED handle is WH bypass valve and in "UP" position water flows to WH and in "horizontal" orientation water does not flow to WH: http://www.bandbmolders.com/files/Na...e_Position.pdf

    Is this the information you needed ?

    Dan
    Dan & Carol
    2014 303RLS Reflection #185 (10/2013 build)
    2012 Silverado LTZ Crew Duramax 2500HD
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  6. #6
    Long Hauler Canyonlight's Avatar
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    captain - below is my txt copied from your other thread where I posted the below info. as well: http://www.mygrandrv.com/for...t-water-bypass

    "Captain - trust you have the Nautilus P1 system......attached is the P1 handle routing guide which states the RED handle is WH bypass valve and in "UP" position water flows to WH and in "horizontal" orientation water does not flow to WH: http://www.bandbmolders.com/files/Na...e_Position.pdf

    Is this the information you needed ?"

    Dan
    Dan & Carol
    2014 303RLS Reflection #185 (10/2013 build)
    2012 Silverado LTZ Crew Duramax 2500HD
    2700/16K Pullrite Superglide

  7. #7
    King Pin
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    Merged the two separate threads into one thread under "Reflection Plumbing".

    Jim - Moderator

  8. #8
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    Awesome! Just what I needed. Thanks guys.

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