water circulation

Generally water from the ground is absorbed by the main pipe of the watering system. The main pipe divided to two pipes, pipe to the sink on the first floor and pipe to second floor. On the second floor the pipe divided to two main pipes. Actually the pipe that watering the first and second floor is cold water, so the water in the first main pipe on second floor flow to the cold water tank. This tank is save all the water that absorbed from the ground, this is the first step of watering all the room in the house. Water from the cold water tank divided into two groups. First, flow to the hot water tank, this tank used to boil the water from the cold water tank, and the water from the tank spread to be used in all room in the house. The second group, the water from the cold water tank directly spread to all room without boiled first.