If we talk about how to choose a wall-mounted boiler, you should first decide what type you are interested in: single-circuit or double-circuit. Then you need to determine the appropriate power of the device. This is not difficult, for one square meter of room area with a standard ceiling height 100 watts are needed. In this case, an important condition is that the housing is not adjacent to unheated premises. If you want to heat a corner room with two windows, then 150 watts of power should be calculated per square meter. If you have any doubts about the correctness of the calculations that you made yourself, you can take the help of professional consultants working in the outlet.
If you want to buy a wall-mounted boiler and have already tentatively decided on the required power, then you can consider other issues. Another important point is related to the performance in terms of hot water supply. Everything is quite simple here. Water from the tap flows at a speed of 400 liters per hour. Boiler specifications require minute output. With one
hot water intake point, a figure of 6.6 liters per minute is sufficient. When using two points of water supply, the device must produce hot water at a speed of 13.2 liters per minute or more.
If you are considering a wall-mounted boiler, and everything is clear with the amount of water at the outlet, then you should determine the temperature. Since we wash our hands and dishes, take a shower not in boiling water, but in warm water, there is no point in buying a device that will warm it very much. Comfortable for most is a temperature of 40 degrees. Each wall-mounted boiler in its characteristics contains information on the temperature range of hot water supply, for example, 35-60 degrees Celsius, as well as parameter dt: 25 or 30. This number indicates the difference between the cold water entering the device and the hot water received at the outlet.
The double-circuit wall boiler was described above. If we talk about a single-circuit option, it should be noted that it is oriented exclusively for heating tasks. With its help it is impossible to provide a house or apartment with hot water, so it is not so common among consumers. Gas wall-mounted double-circuit boilers are much more in demand. They are quite convenient, as they are very easy to mount on the wall, while they do not need much space. Their main advantage is the ability not only to heat the room, but also to provide hot water. Since these solutions are very versatile, they are often chosen for installation in country houses.
At the moment, the most popular among consumers are boilers of the Ferroli company, which has become a leader not only in Russia but also in the world in the production of heating equipment. The characteristics of the products of this brand include reliability, high quality, wide management and configuration options. At the same time, the cost of products from this manufacturer is often even lower than that of European counterparts.