Black tank drainage

[Michael H]

We have recently purchased a 2021 Riverstone Legacy 39 FBRK. It is 1.5 bath unit. Way more complicated than my older Allegro Bus pusher.

I am having fits getting the tanks cleaned. The lower galley Grey and black tanks are good now. The upper bath Grey and black tanks are close to full after opening drain valves.

On the outside wall there is a black tank flush hookup for the lower tank (with the hidden T valve under the unit. On the inside of the water closet there is what appears to be another flush type hookup, but is not labeled. Can anyone confirm this is for the upper, main bath black tank?

FR manuals such! Thank you very much!
Mike

 

[TheLooks]

If you can, pull the wall behind the water inlet and see where the line runs. I cant think of anything else it would go to other then fresh water fill. But a nice unit like that usually does that by turning valves.

 

[TheLooks]

Didnt think....Do you mean the gauges show them full?

 

[Michael H]

They are both black and Grey in front bath are apparently plugged. Show about 3/4 full. Unit sat in southern AZ for months not being used. I got front ones opened up but that tank flush only services the galley. The water is hooked up. The open connection looks identical to the other one on the outside so I believe that must be it. Just looking for confirmation I guess. This thing is way too complicated to not have a usable manual. The online info is just way too general and not coach specific.

I might also eventually figure out the HVAC system......... If anyone reads this who has this unit, I would be grateful for a shout out. I have 3 AC, one of which has a heat strip I can't figure out.

Thanks much.

 

[TheLooks]

Why do you think they are plugged is question? If you are going by the gauges they never work anyways. If you open the valves to them and our water down them and it doesn't come out, they are plugged. IF so, get some Unique or Liquified and pour it in and let it set. If they are badly cruded from it setting and drying out, it may take something stronger.

 

[TheLooks]

Heat strip should come on when selected. Usually Electric heat option on the thermostat.