To avoid any overflow
No, an expansion tank is not required.
By having sufficient freeboard once the vessel's gross weight has been displaced. Freeboard is the height from water surface to the lowest point of the walls (gunnel) of the vessel. Any water that does come inboard (spray or wave over the side) needs to be pumped out of the vessel.
"all boats" have a draft, the part beneath the water. The part above is the freeboard. The part in the water is the Hull.
It is because the fresh water has less density compared to that of salt water.
I doubt it. I think you have water in your tank because it's no way how antifreeze can go in your tank unless you puuted it there. So if you have water in your tank, just buy stuff which is called dry gas. And everytime when you fill your tank add required quantity. To get rid of water in your tank you will need to do that at least 3 times, it depends on how much of water you have.
Steen Strand conceived the idea of a freeboard while doing a design project in college during the Mid 1990's. In 1998 he released two different models of the freeboard.
There has to be a tank pan under the hot water tank with a drain hooked up to the pan. If the tank leaks, it will go into the pan which will flow into the pipe that you have to have hooked up to the sewage system.
The water is fed to the house by gravity, so a pump is not required.
A pressure regulator is required on a nitrogen tank.
freeboard
Yes, they do. For safety reasons and by design, when the skirt deflates, there is enough freeboard to keep the machine afloat.
No, but what is recommended around a hot water tank is insulation. The warmer that you can keep the tank the more money you will save on water heating costs. For a very reasonable cost you can purchase these HWT blankets to cover the tank with. Over a year the money saved on heating water will payback the cost of the blanket.