Drain question from a New owner

[BeemerJoe]

I know I've asked too many questions on here, but I'm just trying to learn before the Camping season.
Would like some info from someone familiar with the FUZION Toy hauler. My model is the Fuzion 422 Chrome. 43'
I'm trying to familiarize myself with the holding tank and drain procedures. I'm finding there are way more valves than was on my regular fifth wheel
My rig has two bathrooms. Looking under the rig I see only ONE outlet, with a pull valve right next to it.
In the convenience area, there are two valves. one marked black and the other Gray. Those are easy to figure out.
NOW. Under the rig is another valve coming straight out and down from under the rig. Pretty large tube.. about the same size as the vents on the roof. I'm thinking a main drain. Then looking a little further (again under and to the side are two more pull handles.
I have absolutely no idea what those three are for.. Does anyone on here know?
I sure wish Keystone would give an owners manual geared for specific models..
Thanks for any help anyone can give.

[flybouy]

Pictures would help as would a signature with the year, make, model of trailer and truck.

[BeemerJoe]

Will get on the pictures right now.
And I mentioned in the post: 2016 keystone Fuzion 422 Chrome

[BeemerJoe]

Here are the pictures.

[flybouy]

Originally Posted by BeemerJoe

Will get on the pictures right now.
And I mentioned in the post: 2016 keystone Fuzion 422 Chrome

I don't see the 2016 in the first post. Where did I miss it?

[NH_Bulldog]

The white one is easy, that’s the fresh water tank drain. The valves in the convenience center are for black and grey for the master bath. The valves at the back are for the kitchen and rear bath grey and black tanks. All the tanks are brought together to a single outlet (with it’s own valve) for both black tanks and both grey tanks.

[flybouy]

First pic is a " last chance" valve at the outlet. The second pic from the top appears to be a fresh water tank drain. Third pic I'm guessing is gray and black from the rear tanks, and bottom pic is gray and black from front tanks.

Easiest way to identify is dukp all tanks, close all valves. Put a clear fitying between the outlet and hose. Run water in one sink, shower, or toilet at a time and open one valve at a time until you see water draining.

[BeemerJoe]

Good idea.. thanks.. and thank you to the others for the help

[travelin texans]

Originally Posted by flybouy

First pic is a " last chance" valve at the outlet. The second pic from the top appears to be a fresh water tank drain. Third pic I'm guessing is gray and black from the rear tanks, and bottom pic is gray and black from front tanks.

Easiest way to identify is dukp all tanks, close all valves. Put a clear fitying between the outlet and hose. Run water in one sink, shower, or toilet at a time and open one valve at a time until you see water draining.

If you want verify for absolute certainty dump a couple packets of Kool Aid of different colors with a couple gallons of water in each tank before draining, then mark the valve handle.

[BeemerJoe]

My appologees.. I forgot to put the year in.

[flybouy]

Originally Posted by BeemerJoe

My appologees.. I forgot to put the year in.

If you create a signature it will appear in every post. You won't have type it in each time or respond to the questions. Just a suggestion.

[BeemerJoe]

Well I just tried.. Changed all my stats, but not exactly sure where to change your signature.

[BeemerJoe]

I just created one, but it's not showing up.. I guess it takes a while.

[flybouy]

Originally Posted by BeemerJoe

I just created one, but it's not showing up.. I guess it takes a while.

Looks good to me.

[BeemerJoe]

Well everyone, thank you.. but truthfully I'm still confused. According the specs for my model and year, it show that I have only 3 tanks. Fresh (112gal), Gray (136Gal) and Black (86Gal). So I'm still not sure what all those valves are for.
I guess when I get water in the main tank I'll experiment the way It was suggested in a previous response.

[flybouy]

Originally Posted by BeemerJoe

Well everyone, thank you.. but truthfully I'm still confused. According the specs for my model and year, it show that I have only 3 tanks. Fresh (112gal), Gray (136Gal) and Black (86Gal). So I'm still not sure what all those valves are for.
I guess when I get water in the main tank I'll experiment the way It was suggested in a previous response.

What specs? Typically the specs indicate TOTAL SYSTEM CAPACITY and not single tank capacity. Sites like RVUSA and others will not indicate # of tanks correctly as whomever types the info in or the software used to populate the columns will lump in all the capacity as one tank.

If you have a sink or a toilet on each side of the axles then you will have separate tanks fore and aft of the axles. There isn't enough space to run waste lines above the axles to get enough slope to drain the pipe.

[BeemerJoe]

Well, this came directly from Keystone resource spec. Shows only ONE tank for each. I'm not disagreeing with you, just trying to make sense of it all.https://www.keystonervsource.com/spe...an-422-tr25220

[flybouy]

Originally Posted by BeemerJoe

Well, this came directly from Keystone resource spec. Shows only ONE tank for each. I'm not disagreeing with you, just trying to make sense of it all.https://www.keystonervsource.com/spe...an-422-tr25220

Click on that link and look at the top right hand side of the page. As I explained, that's not a true representation of number of tanks. I don't know how to explain it any better.

[BeemerJoe]

Understand.. I'm trying to find an Original OEM spec sheet from Keystone now.

[NH_Bulldog]

I agree, the tanks are total system capacity. The fresh water tank even includes the capacity of the pipes and water heater.

Keep in mind that the waste tanks are all under the floor and between the frame rails. A space that is shared by plumbing, HVAC, and electrical. In some toy haulers, you can also have a fuel tank in that limited space.