I also have a 34RSBS and ran in to the same issue. my dealer also stated that one tank was for the kitchen and the other for the bath/shower. He obviously didn't know what he was talking about. After numerous calls to Jayco Customer Service, I was able to get to someone that was able to clarify. The front tank is actually plumbed for a washer. If you look in the front storage on the door side of the unit you will probably be able to see the pipe running up under the shelves on the front corner. The TW is heavy on this unit to begin with so, I couldn't imagine ever wanting to add a washer.I did receive a schematic for the unit and have attached it to this post. Hope this helps.