Heating batteries can be connected in one of three ways. When choosing, you must consider that each has its own pros and cons. The piping layout is the basis for the selection. The diagonal connection of the heating radiator is not used in city apartments, since they usually have a side connection. However, some home masters and specialists when choosing an effective system prefer the diagonal version.
Features of the diagonal connection scheme
If you also wondered why the diagonal connection is the most effective, then you should consider this option in more detail. If we take into account the process where hot air or water is involved, then the action will occur according to one physical law, which involves the rise of warm masses up, while the cold ones go down.
To ensure an even distribution of heat throughout the radiator volume, the coolant should be distributed over the battery. As mentioned above, lateral connection in city apartments acts as the main scheme. After all, forced circulation under high pressure is used there. The diameter of the outgoing and outgoing pipes is only 20 mm. Through them, water enters the battery at high pressure, which allows you to evenly and quickly fill the device.
If we are talking about private housing construction, where the circulation is natural, the filling of radiators occurs under the influence of the aforementioned physical law. That is why hot streams penetrate through the upper pipe, pushing cold water through the lower outlet from the opposite side. Two nozzles are located diagonally when viewed from the instrument. Hence the name of the connection. The coolant fills the battery gradually, giving off heat to the entire volume. It is necessary to take into account not only the law of heat transfer, but also the physical law. That is why this scheme is the most effective.
Features of the implementation of the diagonal scheme
You can implement the diagonal connection of the heating radiator yourself. Work should begin with preparing the battery. To do this, take care of the availability of:
- heating devices themselves;
- shutoff valves;
- pipes;
- fittings;
- other additional devices, such as heat meters, Mayevsky tap and thermal heads.
At the first stage of the work, a radiator is installed. In this case, you must take into account the rules. This is due to the fact that heat transfer efficiency will depend on them. When using the diagonal connection of the heating radiator, part of the window opening must coincide with the axis of the radiator. The distance to the upper collector from the windowsill must be kept within 15 cm. As for the step from the floor to the lower part of the collector, it should be the same. A distance of 5 cm must be set from the wall to the battery. Errors may occur. If we are talking about the distance to the windowsill or floor, then the error can reach 4 cm, while the step between the battery and the wall can be increased or decreased by 1 cm.
If you decide to use the diagonal connection of the heating radiator, then you must take into account some assumptions that will affect the intensity of heat transfer. For example, if there is no window sill in the room, then this figure can be increased by a maximum of 20%. Approaching the battery to the floor will reduce heat transfer by 7%. To increase the efficiency of heat transfer, professionals recommend supplementing the radiator with a reflective screen that is mounted on the wall. You can use for this a sheet of fiberboard or cardboard, each of which is covered with foil. In this case, heat transfer can be increased by 25%.
Recommendations for implementing a diagonal connection diagram
If you want to achieve the correct operation of the radiator, then you should approach the implementation and installation with maximum attention. It is important to correctly position the device horizontally. You can get rid of distortions using the level. At this point, it will be important to mark up. As soon as the markings can be applied, brackets can be installed.
As a fastener, a self-tapping screw installed on plastic dowels is used. On sale today you can find brackets that have the shape of pins. They are screwed into the dowel of an impressive diameter. Now everything is ready to install the radiator and connect it to the piping system.
Radiator package for diagonal circuit
The diagonal connection diagram for radiators necessarily assumes a complete battery. To do this, it is supplemented with a Mayevsky crane, with which you can bleed air. We need to take care of the presence of metal couplings, which are also known as American women. They are installed in the pipe, for this you need to use threaded metal couplings. Valves are fastened to the latter; one such element should fall on each branch pipe. This will allow the battery to be cut off from the heating network if you are in need of repair. The system itself will work in normal mode.
Additional information on the diagonal connection diagram
The diagonal connection diagram of heating radiators in urban apartments is used quite rarely. However, according to experts, this technique can be used if the number of sections in one battery exceeds 12 pieces. With the lower side connection, as well as with the circulation of water under pressure, the pressure will not be able to overpower such a number of sections. The extreme ones will remain a little warm, and there will be no sense from them.
Such a scheme is used in a two-pipe wiring system. The falling circuit must be connected to the upper pipe, while the return circuit to the lower. If the circulation is forced, then the connection can be carried out on the contrary, however in this case you will encounter a decrease in efficiency.
For reference
When using the diagonal connection of heating radiators in a private house, the heat loss through the batteries is 2%. Therefore, in the implementation of heat engineering calculations in this case, a coefficient is taken, which is 1.1.
The main types of connection
There is also a one-way connection, in which the hot water supply pipe and the return pipe will be connected on one side of the radiator. The application of this principle is rational for single-story buildings. The scheme is suitable if you want to connect a long radiator with the number of sections to 15. But if this parameter is increased, the heating efficiency will decrease, because the last sections will be colder.
Considering the main options for connecting heating radiators, you should also pay attention to the lower connection, which is suitable for those systems whose pipes pass under the floor surface. In this case, there will be a small section of pipe leading to the lower pipe above the surface. The supply pipe is installed on one side of the battery, while the discharge pipe is installed on the other. The disadvantage of this method is significant heat loss, which reaches 15%. At the top, the battery may not fully warm up.
Important to remember
One-pipe diagonal connection of heating radiators is used quite rarely, because such a scheme has a significant drawback, expressed in the absence of the ability to adjust the heat supply. Thus, the user will not be able to adjust the degree of heating of the radiators, in some cases this feature is a significant minus. However, heat transfer is calculated even when creating a heating project, and in the future it must comply with the specified parameters.
The main advantages of diagonal connection
The diagonal method is good in that it can be used to provide the highest heat transfer coefficient. This is true when compared with the rest of the above schemes. In other words, in the case of a diagonal connection, you can provide the room with the maximum amount of heat. The diagonal connection of heating radiators in the apartment should ensure the movement of the coolant inside the battery with the formation of a gradient loop.
The effectiveness of this scheme may decrease, which will happen with a large number of sections. But even in this case, their maximum number can be 24, while with the side circuit this parameter is only 12. This feature can be considered an important advantage, because you can use longer radiators. With lateral connection, an increase in the number of sections will be accompanied by less efficient operation of the elements located on the sides.
Main disadvantages
The diagonal connection of heating radiators, the pros and cons of which are described in the article, can be used by you. An important drawback of this scheme is the not too attractive design. After all, one cannot argue that the additional pipe does not look very aesthetically pleasing. It connects the return pipe and the upper pipe of the radiator, the first of which passes from the bottom. A negative can also be considered that not all city apartments have the opportunity to provide this type of connection. Indeed, during the construction of Soviet high-rise buildings, they sought to minimize the consumption of materials, and often did not install a separate bypass.
Conclusion
The diagonal connection of the heating radiator with a single-pipe system, although undesirable, is still possible. But at the same time, you should take into account that in order to increase the level of heat transfer it is important to take into account the increasing coefficient, which sometimes reaches 1.2. Thus, the passport heat transfer must be increased by 20%.