Bathroom flood - What did I do wrong?
We have a 2008 Newmar Canyon Star. Yesterday was our last day on the road home from Florida, so I wanted to empty the gray and black tanks. First I opened the black tank dump valve, and let it empty. ...
Forum Discussion
Dutch_12078 wrote:
Bathroom sinks are sometimes plumbed to drain into the black tank, likely to help balance the capacities. My last two motorhomes have been plumbed that way. The RVIA standards permit one device besides the toilet to drain into the black tank, but the shower is not normally used because of the higher backup risk.
The ONLY reason that any Gray source may go to a Black tank is because the floorplan design of the RV keeps that particular Gray source from going to the Gray tank. Doug
