2015 Cherokee 274DBH
I have a switch on the inside of the trailer to turn on the water heater. On the outside located on the water heater itself, it has a separate switch (simply On/off) which the manual simply states is to turn on the electric part of the water heater and it won't run propane (as it will keep the temp at x degrees).
Basically, if the switch is off, the propane will kick in. If the switch is on, it runs off electricity but I was unsure of whether it was connected to the battery at all.
Funny thing was, there was a piece of tape over the switch, i stumbled upon when dewinterizing for the first time and then read the manual.
Thanks for the responses :)