Manuals can be kind of brief and hard to find in the RV industry.
Doubletree became DRV Suites after a dispute with the Doubletree/Hilton Hotel chain.
DRV Owners Manual contains RV Owners Manuals
may have something of interest?
50A service is going to be a four (14-50R) prong 240V receptacle although you'll only realize 2 ea. 120v. isolated circuits in most all instances.
J & J
+ Kickr's the Vonderhund
, ES-38RSSA, 19.6K#
, 3500HD-Max, CC, 8'-DRW, 9.2K#