The illustration below shows how a heating system works in a house. It explains how water moves from the outside to different part of system and how whole process is made.
Many houses managed to get heated by central heating system. If you construct it correctly it will always works correctly. It's mechanism is very simple.
The given diagram shows how a central heating system of a house works. As is observed from the illustration, the central heating machine comprises several mechanical aspects and forms a complex system.
The diagram illustrates how a central heating system operates in a typical house to maintain the inside temperature and tap water at a certain temperature.