Our 2005 30FKSS, which we have traded, came with an electric and gas. It had a on/off switch inside the outside panel as shown in post 3, you turn that on and turn on the breaker for the waterheater in the convertor control panel inside the trailer, ours was the botton breaker. To operate on gas we had a switch on the wall over the counter top back wall between the front window and side window. Turn it on and that should light the gas side of heater. If I remember right a red light will come on if it does not light, try again as air sometimes get in the lines and need to work itself out. Both electric and gas can be used at the same time if faster recovery is needed.
2006 Silverado 2500HD Duramax
2010 Prime Time Lacrosse 303RKS
2007 Hensley Arrow Hitch
PT Crew Member 125
Good Sam Club, Cedar Creek Sams Chapter
Passport America Member