Another example of a lousy PDI by the dealer. He should have explained everything to you.
You should have gotten owners manuals for all the appliances like water heater, furnace, AC, stove, etc. If not, you can usually find the model number on it and find the manual on-line.
This generic FR Travel Trailer Owners Manual may help; it's pretty generic, though.
UPDATE: File was too big to post. Look for it here:
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10