2005 Sixpac D850 tech questions?

[Broncorambler]

Just purchased this camper and prior owner new little about it.
Main water tank is below fridge and dinette, but there is another tank below the sink that cant figure out?
Not grey tank as sink drain goes past it to rear of camper. Appears to be fresh water tank? Very curious?
Another question. Manual says grey and black water drain from single valve. Is there only one tank for both, or two tanks in series going to one drain valve? Seems strange as odor could come up thru sinks?
Never seen this before as had many rvs, but its a smaller camper.
Thanks and this site is great resource!

[mkirsch]

It's entirely possible to have a hot satisfying shower without using up your fresh water or filling the black tank. You just have to not stand there and soak for 20 minutes.

If I can do it in less than 2 gallons, anyone can.

[specta]

40 fresh and 38 waste. No worries. 😉

[Broncorambler]

Oh well, combo tank is large atleast and will allow for showers. Gives new meaning to ****, shower and shave! Haha
Auxillary water tank still a mystery tho? Hopefully FWC has some grey haired techs that know Sixpacs. Haha

[specta]

The gray and black are the same tank.
That's why there's only one drain valve.

I was bummed when I bought my 1996 Skyline Week Ender and realized that the shower drained into the black tank. 😞
It sure filled up fast.

I had a 1969 Excel TT that didn't have a gray tank. The way the dump valve was set up I bought a cap that I could attach a garden hose to and drain the gray water as we generated it.

[Broncorambler]

Thanks but only one valve and one drain connection. Manual states same , but just seems odd. Tank status panel even shows two sewer tanks, but likely just panel used in all their campers.

Water heater sits next to this white plastic tank under sink that likely holds about 5 gals.
Water tank fill hose goes right past it to main tank, so cant see how could even fill it? Very strange.
Will contact FWD campers, thanks for that heads up.

[Tiger4x4RV]

I once visited the SixPac factory and considered buying an 850. Still have this handout. Maybe it will help you? If not, I think they were bought out by Four Wheel Campers and maybe some old-timers at FWC can help you.

[KangaBunnyRoux]

Might mean one place to connect a drain hose, but two valves. Do you have two pull handles and one place to mount sewer hose? That is common. Under my sink is a water heater...technically a tank is that what you see?

[Broncorambler]

Is there any Sixpac tech resources out there, since believe out of business? New name for company maybe? Appreciate any help, thanks.