Fuzion tank flush

BeemerJoe · 01-02-2022, 09:26 AM

OK.. Need some help. Can someone tell me where the TANK WASH HUB is on this thing. 2016 Fuzion 422. I've enclosed 2 pictures. One of the instruction (See flushing black water tank). And the other picture is of my convenience center.

**chuckster57** · 01-02-2022, 09:34 AM

The three hose connections on the left side: the bottom one should be the black tank rinser.

BeemerJoe · 01-02-2022, 09:57 AM

I thought that, but the label next to it is confusing. it shows that it's for fresh water. The toggles are also confusing to me anyway. Says "TANK FILL POWER FLUSH,,,, NORMAL FLOW. FILL

**chuckster57** · 01-02-2022, 10:04 AM

I think it's the placement of the valve and the label. I would have thought the rinser would have a black connection.

BeemerJoe · 01-02-2022, 10:17 AM

Here's a close up picture of the valve and connections.

**chuckster57** · 01-02-2022, 10:20 AM

I see, but if you look there are 3 connections and a label ABOVE each. I would assume the label is for the connection below it.

BeemerJoe · 01-02-2022, 10:26 AM

So would you think the valve should be at NORMAL FLOW To flush.. I guess I could just try it and see Can't realy hurt anything.

**chuckster57** · 01-02-2022, 10:35 AM

Quote:

Originally Posted by BeemerJoe

So would you think the valve should be at NORMAL FLOW To flush.. I guess I could just try it and see Can't realy hurt anything.

That valve is to choose the fresh water either going into the fresh tank or feeding the fresh water system in the trailer.

BeemerJoe · 01-02-2022, 10:43 AM

so that brings me back to my original question. where is the TANK WASH HUB?

**JRTJH** · 01-02-2022, 10:52 AM

I think it's confusing because of the physical location of the components. I'd suspect that because of the configuration of the plumbing behind the panel, the fresh water tank fill valve has to be positioned next to the black tank flush connection. That makes it "look like it's part of the black tank system" but in reality, it's just located there because of the angles of the connectors on the main valve body behind the panel....

Your trailer has two black tanks, so Keystone calls the connector and plumbing a "HUB" where on a trailer with a single black tank, they call it a "connection". It's more about what "they call it" than it is about "the functional use"...

"Black tank port" is the same functional use as the "TANK WASH HUB" just two black tanks rather than one black tank so it's a "HUB"....

To make it even more confusing, on some trailer models, the "HUB" is connected to both tanks with a "on/off valve" to control water flow to one black tank or the other. Then, on some models, the "HUB" is only connected to the front tank and the back tank has a separate black tank port that connects that tank flush fitting. But, to "save money" Keystone uses the same instruction decal on both.... Easy to get confused trying to make the instructions "fit either design"....

Seems Keystone expects people to be "English majors with a thesarus" just to read the instructions......

BeemerJoe · 01-02-2022, 11:14 AM

Good explanation, but unless I'm missing something, it still doesn't answer my question as to where I hook up the hose to flush my tanks. Sorry to be so dense.

**chuckster57** · 01-02-2022, 11:23 AM

Quote:

Originally Posted by BeemerJoe

Good explanation, but unless I'm missing something, it still doesn't answer my question as to where I hook up the hose to flush my tanks. Sorry to be so dense.

BOTTOM connection. If you do have 2 black tanks then it might do both or you might have another connection on the outside of the trailer near the rear tank.

BeemerJoe · 01-02-2022, 11:47 AM

I'll take a look for the second connection.. if not, I'll try that bottom one on NORMAL FLOW. Can't do it right now since I just finished winterizing it.. I'm sure I'll figure it out.. Was just hoping someone had this same model RV.

**flybouy** · 01-02-2022, 12:00 PM

Quote:

Originally Posted by BeemerJoe

I thought that, but the label next to it is confusing. it shows that it's for fresh water. The toggles are also confusing to me anyway. Says "TANK FILL POWER FLUSH,,,, NORMAL FLOW. FILL

It does not say POWER FLUSH. It says POWER FILL.

BeemerJoe · 01-02-2022, 12:02 PM

You are right.

**sourdough** · 01-02-2022, 01:09 PM

Your black tank flush is the bottom inlet below the sticker warning you about the black tank flush valve and unsanitary conditions. The one above (with the sticker that says potable water only) is for your city water inlet; normal flow lets your trailer run on city water, "fill" fills the fresh water tank. The top inlet is to winterize your trailer.

The locations of the little levers are better understood if you get behind the convenience center and look at what goes to what. The placements of the stickers, levers and inlets are definitely not intuitive. Connect the water hose (use one specifically for black tank flushing and either label it or get a particular color), open the black tank valve (it will probably already be open because you just dumped the black tank) then turn on the water....it will start rinsing.