You should be able to identify appliances such as fridge, furnace, a/c, microwave, stove/oven, water heater, etc. and get manuals for them online. Here are a few possible sources for them:
http://bryantrv.com/docs.html
http://manualslibrary.org/info/manuals-single-takeout/
The Tradewinds has a Freightliner chassis, so you can get chassis info at Freightliner Custom Chassis website: https://www.freightlinerchassis.com/