The heating system in a private house plays an important role, since it is possible to live all year round in such a building. To perform such work, it is necessary to carry out a project, which can then be oriented during the work.
According to its principle of operation, heating systems are divided into compulsory and natural. In the case of the usual coolant supply, the process is carried out according to the laws of physics, otherwise, a pump is provided in the design circuit.
The natural movement of the coolant occurs according to the principle - warm water after the boiler rises, cooled down - goes to the bottom of the system. In fact, the circulation takes place according to simple laws: the heated water after the boiler moves through the heating pipes, reaches the battery, transfers heat to the rooms through their surface and returns to the boiler in cooled form to repeat the circuit. If heating is planned using a pump that will perform forced circulation, then it should be installed at the return point of cold water to the heating boiler.
Point of installation of the expansion tank during natural circulation
To ensure that the system works with natural circulation, you must follow certain rules:
Independence from external factors can be singled out among the advantages of natural circulation. In addition, there will be no need to purchase expensive pumping equipment, the work of which will cause increased pressure, due to which it will be necessary to install safety valves.
Expansion tank of an open system
It must be emphasized that arranged heating can be both open and closed. In the first case, the air has the ability to come into contact with the heating medium. With a closed system, this is excluded. Due to this, oxygen does not get into the coolant, which contributes to increasing the durability of metal elements.
Diaphragm tank for a closed system
In the open version, air is present in the expansion tank, therefore, the pressure in the system is equal to atmospheric.
It should be noted that an open network with the natural principle of water circulation is distinguished by safety and simplicity. And for the device of a closed cycle heating of country houses, this scheme may well satisfy the owners. Moreover, over time, it is easy to convert it into a compulsory one, if there is a need for it.
Artificial circulation of coolant
To do this, you will need to install a pump for circulation and, if necessary, replace the expansion tank .
When installing the heating system, it is imperative to ask which scheme to choose - single pipe or two pipe. The first option provides for the serial connection of radiators, in which water, as it passes through the pipeline, gradually releases heat through the batteries and cools. In the second variant, the heaters are independent of each other, therefore the degree of their heating is approximately the same.
The single-pipe system is much simpler and cheaper than the alternative one. This applies to the materials used, costs and installation.
Two-pipe with lower wiring
The two-pipe system has other advantages. It is suitable for different conditions, therefore, more versatile than the previous one. In addition, heating is more efficient.
Two-pipe with top wiring
One of the defining moments in the installation of the heating system is the selection and installation of the boiler heating. It should use fuel that is most suitable for certain assessments for a particular region. This may be gas, solid fuel, electricity. The price of these resources in different regions is different. In addition, it is necessary to take into account the dimensions of the rooms, the material of the dwelling, the climatic and geographical strip.
The most popular is water heating, as it is suitable for heating various buildings of various materials. It is only important to correctly calculate the system under certain conditions, then the mounted network will give off heat in the maximum amount.
Before installation, it is necessary to make a project in the form of an axonometric scheme on which the wiring should be applied and all structural elements should be indicated.
Example of axonometric scheme
When calculated per 3 m² of area, one section of the radiator should fall. There may be unforeseen problems in the network, so you need to add 20% to the calculated indicator. The system will work more reliably.
Diagonal connection of radiators
Water in the filled system should stand for about half an hour. If there are leaks, they must be eliminated.
At the end, the boiler is turned on, the water is heated to 70º C and the network is re-checked. If there are no leaks and the system functions as expected, we can assume that the work is over.
We recommend the article to be read:
How to make a water-heated floor.
And this is already mounted heating system, assembled according to the scheme, which you can see in the previous video: