FR Salem 2015 337BAR Dumping Mystery
My Unit has three dump rods. Neither of them are labeled. On the instrument panel in the RV. There is Black Water, Grey Water 1, and Gray Water 2. When I picked up the RV the rod on the far right was open. After a night of camping, Grey Water 1 was full. I dumped it and left the valve open. Grey Water 2 was empty and still is. When I first opened the cap to hook up the hose, nothing came out. So have have no idea what puts liquid into that tank.
My question is, what is Grey Water 2 for? I cannot find anything on line or in manuals where there is any mention of Grey Water 2?