Well I fixed the furnace in my 86 sovereign
(faulty sail switch) and now have some duct questions:
I have one duct going to the front of the camper (4 inches long) and two ducts going back to the rear. One dumps into the bedroom and the other goes into a plenum box under the closet. The plenum splits into two smaller ducts, one to the bathroom and the other was open allowing it to dump under the closet. (I have no idea why???)
Can I run just one duct to the back with a branch going to the bathroom? Or do I need both going to the back for flow?
Why was there an open port in the plenum box? The duct going to the bathroom was about 5 feet too long and wrapped up under the closet. I have a hunch that the PO did some "on the farm" engineering.