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.
Begin by turning off the power or gas to the water heater. Next, turn the cold water supply valve off that allows water to flow into the heater. Hook a garden hose to the drain valve at the bottom of the tank and run it outside on the ground. Open the drain valve where the hose is attached. Open the pressure relief valve on top of the tank by pulling up on it.