RV owners manuals are worthless. They are very generic saying things like " be sure to winterize the water system", not HOW to winterize it. Further, every unit may have different equipment than the same unit next to it.
All of the equipment and materials used in your RV will have owners manuals online, simply look up the model numbers which can be found on a sticker or metal plate on each of the appliances.
2020 F28 RKS Titanium
2017 Creekside 23 RBS
2016 F250 Super Crew XLT