Where is the Hot Water Tank

Hi All,

I just bought an used 3124KB TrailManor and trying to learn the TM myself. I have a few questions regarding the hot water tank.:

1. Where is the hot water tank?
2. Is the tank filled up and emptied automatically when I have the city water hooked up?
3. If I don't have the city water hooked up, is the hot water tank filled up when I fill up the fresh water tank.
4. How do I empty the hot water tank?
5. If the hot water tank is emptied, and I turn on the water heater (just for a few seconds), can the element burned out? If the element is burned out, does it cause all electrical outlet not working? Where is the element located it, and is it easy to replace?

Thanks everyone in advance for helping.