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Old 03-14-2020, 05:32 PM   #1
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Added external water inlet on FR3

Thought I would share my latest project to my 2014, FR3 25DS. I wanted to add an external water fill for city water and tank water. The first picture shows the location where I put the city water connect inlet. The second picture shows city water coming in from the left, going through the water filter, out of filter over to a pressure regulator (50-55psi) on the right, then down to the main shut off valve. After the shut off valve, I added an in-line water pressure gage as a visual safety precaution so I can monitor the water pressure as it goes into the unit. From there water can be directed to use either city water or to fill water tank by turning one of the on/off valves, which ever one is needed. Also added a clamp on the right to hold an extra new water filter when needed. Not really needed but added a hose fitting to the panel so I have a place to keep the green/black Y hose spigot. Keeps it up out of the way until I need to use it. Now the only thing outside of the motorhome is a hose going from the MH to the city water spigot.
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Old 03-15-2020, 08:42 AM   #2
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Looks really good Mr. J! At first glance it looked confusing, but second glance shows a lot of thought went into it. I'll bookmark this so when I feel ambitious I might try and do the same. thanks for sharing.
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Old 03-15-2020, 09:11 AM   #3
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Excellent work!
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Old 03-15-2020, 02:10 PM   #4
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Took a lot of laying out to get all to fit and work right.
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Old 03-16-2020, 08:03 AM   #5
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I noticed the plug right under the water filter. Is that for washout? If so, did you install it yourself? Again, thanks for sharing.
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Old 03-16-2020, 02:35 PM   #6
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Old 03-16-2020, 10:34 PM   #7
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backflush/siphon valve missing

Mr J, Looks like you did a lot of thought and planning. Looks good with one exception. You don't have an anti backflush/siphon valve installed between you shut off valve and the blackwater flush inlet. With a single input line, this a health department requirement by most states (a really good safety item). Luckily you have enough room to install one.
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Old 03-16-2020, 10:44 PM   #8
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I noticed the plug right under the water filter. Is that for washout? If so, did you install it yourself? Again, thanks for sharing.
I'm guessing you are referring to the black and green Y fitting. At this time it is not for Blk tank flush. It only has a dummy hose fitting mounted in the panel for now until I am ready to put Blk tank flush system in.. I just use it to hold my hose Y adapter to keep clean and up out of the way.
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Old 03-16-2020, 11:11 PM   #9
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Mr J, Looks like you did a lot of thought and planning. Looks good with one exception. You don't have an anti backflush/siphon valve installed between you shut off valve and the blackwater flush inlet. With a single input line, this a health department requirement by most states (a really good safety item). Luckily you have enough room to install one.
ImQAJack, You are right, I do not have a backflush/siphon valve installed, mainly because I do not have a back flush system on the unit yet. At this point the only water coming in goes either to the onboard water holding tank connection or to the fresh water fill connection. The only back flush valve is built into the water inlet that is mounted on the outside of the unit by the wheel well. I plan on adding a back flush system to the unit at a later date. Thanks
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Old 03-17-2020, 11:48 AM   #10
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Mis-View (alt Config)

Mr J, Yes your right, I was in error. I've been warning lots of other owners of different units about hooking up the backflush system to there main water without vacuum breaker/anti-siphon values. I attached a pic of my original (factory conf) and my modify system.

Another item you may consider. I remove factory light an installed a led light strip controlled a mag switch. The strip light is mounted to the interior side of the door frame.
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Old 03-17-2020, 02:03 PM   #11
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Mr J, Yes your right, I was in error. I've been warning lots of other owners of different units about hooking up the backflush system to there main water without vacuum breaker/anti-siphon values. I attached a pic of my original (factory conf) and my modify system.

Another item you may consider. I remove factory light an installed a led light strip controlled a mag switch. The strip light is mounted to the interior side of the door frame.
Looks good, so many ways to re-configure these units. I am doing the same thing with the shower hook-up as far as using a GH. Have the adapter for the garden hose, just didn't have it on when I took the picture. Do you have much pressure when using the GH from the shower hook-up?
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Old 03-17-2020, 05:45 PM   #12
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Mr J After opening the hole dia in the facet spigot to .375", I got resemble water pressure/ flow even on the freshwater pump.
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Old 03-17-2020, 10:46 PM   #13
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Mr J After opening the hole dia in the facet spigot to .375", I got resemble water pressure/ flow even on the freshwater pump.
Thanks, I thought I would need to drill out that tiny hole, didn't look like much water would flow through it. Will give it a shot.
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