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Old 08-18-2014, 10:54 AM   #1
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Grey shower water goes into black tank

So after 6 days in my new hyperlite 30hfs5 I found out my shower water is going to a 32g black tank. This seems pretty whack to me. Anyone else's XLR have this plumbing setup??
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Old 08-18-2014, 11:05 AM   #2
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I thought only toilet water would go to my black tank. And also it's supposed to have a 54g black tank but instead it has a 32g. I'm not impressed .
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Old 08-18-2014, 11:21 AM   #3
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Shower water goes to my black tank!!? HELP please!!

Just wondering why my shower is plumbed into my black tank?
Everyone I have talked to says this is NOT right. Please respond with input!!!!
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Old 08-18-2014, 11:24 AM   #4
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On our XLR 24HFS, the shower goes into the gray water tank. Sounds like yours may be plumbed incorrectly...
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Old 08-18-2014, 11:31 AM   #5
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That's what I figured. It's at the dealers now and they're telling me it's normal!! No way this can be right. And my black tank is only 32 gallons!!!!
Do u have 2 grey tanks or one? And what size is it???
Thanks
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Old 08-18-2014, 11:38 AM   #6
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I also have a 30hfs5, after using it a couple weekends and dumping the tanks the black tank seemed to have more drainage than i expected. I will have to pay attention next time out!
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Old 08-18-2014, 11:42 AM   #7
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Yea I noticed it after my blank tank was full and my tub wouldn't drain.
Pretty inconvenient for living on a worksite with no sewer!!
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Old 08-18-2014, 11:57 AM   #8
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My 24HFS has a single 57 gallon gray and a 32 gallon black I believe.
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Old 08-18-2014, 12:07 PM   #9
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Are you sure the shower is going to the black directly? There was another thread on here a little while back about somebody encountering a grey tank that T'd into their black tank behind the valve instead of in front of it. (No, I don't recall what model that was.)

But, if you've got some other kind of crazy tie-in like that, you might be draining to the grey, but then have the grey draining to the black resulting in the black being full.

Either way, it would still need to be fixed.
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Old 08-18-2014, 12:12 PM   #10
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I don't know. It's my first rv. I closed my grey valve, drained my black tank by hand with a bucket and left the black valve open. Then I turned on my shower and sure enough clean water was coming out of the blank drain. Doesn't seem right to me at all.
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Old 08-18-2014, 12:17 PM   #11
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Sometimes there is no easy other way.
If the gray (grey) water tank is near the kitchen so the sink can
drain to it and the bathroom is in the other end of the trailer- the factory
will plumb toilet and shower together.
Now if you've got a large gray tank and a smaller black tank you do
have a problem.

I suspect there are many others out there with similar drainage but
the owners just don't know about it. (Or maybe they don't care?)

We've seen trailers where there were two dump connections and you had to
dump one and then pull forward several feet and dump again.
I'm glad I don't have to do that!
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Old 08-18-2014, 12:17 PM   #12
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Oh, ok then, that pretty much answers that. To be certain, did you do the reverse test and flush the toilet to ensure the two tanks weren't just mislabeled?

After looking up your floorplan (nice unit btw) I can't see any reason why the tanks wouldn't be plumbed right. After all, everything that uses water is right there.
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Old 08-18-2014, 12:29 PM   #13
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Just talked to the tech at the dealership. Apparently last week he made a mistake when looking at my tanks. The Grey tank is 32g and the black is 54g which is correct. He's still waiting to hear from forest river about the shower water going into the black tank though.
I told him either way I want all my grey water going into my grey tank and only toilet water going Into the black tank. But it's gonna cost me

*Tanks* for your input guys! Much appreciated
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Old 08-18-2014, 12:43 PM   #14
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We thought we had a similar problem with our second Wildcat. It turns out that the tank handles were not labled correctly. when we pulled the handle marked Black, we were emptying the gray.
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Old 08-18-2014, 12:51 PM   #15
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Yea that's not the case with mine. When I pulled the black it was black. I know because I had to empty it by hand! Not fun!
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Old 08-18-2014, 01:07 PM   #16
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Quote:
Originally Posted by Bagz17 View Post
The Grey tank is 32g and the black is 54g which is correct.
*Tanks* for your input guys! Much appreciated
IF the tank your toilet goes to is 54 gal and it also drains the shower,
what's the problem??
I'd think you want the biggest tank to catch the shower water...
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Old 08-18-2014, 01:11 PM   #17
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Exactly... the sizing seems backwards to me. You would want the gray water to be larger than the black water. Or at least have the shower draining into the larger tank. I would not change it if I were you. We filled our 57gal gray tank in 4 days (3 of us with minimal water use / navy showers). I think you'll be having to empty quite a bit more frequently if you have your shower go to the smaller tank.
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Old 08-18-2014, 01:35 PM   #18
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Ok the curiosity got to me, since I dumped the tanks last time out and trailer is at home I went to do a test.

It seems you are right with the shower going into the black water tank. I opened the grey water and turned the shower on. No water came out. Opened black valve and water came out. I have an online copy of the 2014 brochure and you can see the listing shows black at 54 gallons and grey at 32. Notice all the tow behinds are the other way around.

So if you fill that tank would there in theory be sewage coming into the shower area?

Please keep us posted what Forest River has to say.
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Old 08-18-2014, 02:22 PM   #19
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They said the shower is supposed to be going to the black tank. So I guess everything is proper on mine. Still seems weird though.
I'm getting them to plumb the shower into my grey anyway. Makes sense with the camping arrangements I have.
And there's a pea trap in place to stop sewer water and smell from coming into shower.
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Old 08-18-2014, 02:33 PM   #20
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Quote:
Originally Posted by Bagz17 View Post
They said the shower is supposed to be going to the black tank. So I guess everything is proper on mine. Still seems weird though.
I'm getting them to plumb the shower into my grey anyway. Makes sense with the camping arrangements I have.
And there's a pea trap in place to stop sewer water and smell from coming into shower.
P-Traps only deal with air (i.e. smell, gas). If the tanks full, it's gonna come up that way.
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