Now we will consider all this in a step option.
First you need to install a boiler, the main element of the heating system. Necessarily produced according to safety rules, at the right distance to all objects. Then it is necessary to connect the boiler with the chimney. After that, there is an installation of radiators in the necessary places of the room, often under the windows. Then it follows the installation of steel, polypropylene or copper pipes and the installation of these elements: at the highest point of the system — an expansion tank, along the path of water in the boiler — a circulation pump, at the very bottom — a place for draining the liquid. All other elements are best separated by valves. At the very end of the installation is the launch. For this, it is best to call a specialist who will observe your work.