Rico in Spanish means rich in English just if your talking about money. If your talking about food rico means it's delicious, good, etc. Example, esto huele rico mean this smell good or  que Rica la comida means like delicious food in English. Puerto Rico means Rich Port in Spanish.
Tankless or demand-type water heaters heat water directly without the use of a storage tank. Heat pump water heaters move heat from one place to another instead of generating heat directly for providing hot water. Solar water heaters use the sun's heat to provide hot water.
Make sure that the hot water heater is turned off. Turn off the cold water supply to the hot water heater. Attach a clean garden hose to the drain at the bottom of the tank. Lead the hose to a place where the water can drain, such as a drain in the floor or a bucket that you can empty somewhere else. With your drain hose in place, open up any hot water faucets in the house and allow the tank to empty.