There is no model-specific manual for your RV, just a generic owners manual with no specific information.
No matter old or new.
You should be able to download the manuals for things like: fridge, a/c, converter, furnace, oven and so on. Just get make and model number and go to the manufacturers websites.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package