Comparison TermoBar KS-G-7DS 7 kW vs ATON Compact 7E 7 kW

Regarding the installation method, boilers are divided into two main types: wall and floor.

— Wall-mounted boilers, as the name suggests, are designed to be mounted on a wall. They usually have low power, which makes it possible to do without a separate room for their installation, and relatively small dimensions, which allow the boiler to fit into the interior of a kitchen or bathroom.

— Floor boilers usually have more power than wall-mounted ones, which accordingly affects their weight, dimensions and the installation method. The weight is also due to the presence of a cast iron heat exchanger, which is considered more reliable and durable than copper, steel or silumin. Most boilers with a power of 50 kW or more and almost all boilers with a power of 100 kW or more are floor-standing.

— Parapet. They are designed for installation close to the wall; at the same time, the installation itself can be both wall-mounted and floor-mounted, depending on the dimensions and weight of the unit. All parapet boilers are gas-fired (see Energy source) and have a closed combustion chamber (see below); in this case, the flue goes directly through the wall, near which the boiler is located. One of the key advantages of such devices is their small size; a parapet boiler is considered a good option for a small city apartment or a private house with small rooms. Also, the advantages of such dev...ices are that they do not burn the air from the room and immediately remove the products of combustion to the outside. In addition, many of the boilers of this type have convection holes and during operation they also play the role of heating radiators.

A very conditional parameter that slightly characterizes the purpose based on the size of the room. And depending on the height of the ceilings, layout, building design and equipment, actual values may differ significantly. However, this item represents the maximum recommended area of the room that the boiler can effectively heat. However, it is worth considering that different buildings have different thermal insulation properties and modern buildings are much “warmer” than 30-year-old and especially 50-year-old houses. Accordingly, this item is more of a reference nature and does not allow us to fully assess the actual heated area. There is a formula by which you can derive the maximum heating area, knowing the useful power of the boiler and the climatic conditions in which it will be used; For more information on this, see "Useful Power". In our case, the heating area is calculated using the formula “boiler power multiplied by 8”, which is approximately equivalent to use in houses that are several decades old.

The minimum operating temperature of the heat medium in the boiler system when operating in heating mode.

The maximum pressure in the heating circuit of the boiler, at which it remains operational, and there is no risk of physical damage to the structure. For a heating system, the maximum pressure is usually about 3 bar, and for a domestic hot water circuit up to 10 bar. When the maximum pressure is exceeded, a safety valve is activated, and part of the water is discharged from the system until a normal pressure level is reached.

The type of combustion chamber provided in the boiler.

— Open(atmospheric). Combustion chambers of this type consume air from the room in which the boiler is installed, and the combustion products are naturally removed through the flue. Boilers of this design are simple and inexpensive but have specific installation requirements: the room must be well-ventilated, and the height of the chimney must be at least 4 m to ensure sufficient draft.

— Closed(turbocharged). Closed combustion chambers are isolated from the room in which the boiler is installed: combustion air is taken from the street, and combustion products are removed there. For this, a coaxial flue is usually used — in the form of two pipes nested one inside the other: combustion products are removed through the inner one, and the outer one is responsible for the air supply. Turbocharged combustion chambers are more complicated and expensive than open ones, and the maximum length of the chimney is limited. On the other hand, such a boiler does not burn the air in the room, and it can be installed anywhere, regardless of the ventilation efficiency.

— Is absent. Boilers powered by electricity do not have combustion chambers (see "Source of Energy").

The diameter of the pipe through which combustion products are discharged from the combustion chamber.

In boilers with a closed combustion chamber often used the coaxial flue, consisting of two pipes nested one inside the other. At the same time, products of combustion are discharged from the combustion chamber through the inner pipe, and the air is supplied through the gap between the inner and outer ones. For such flues, the diameter is usually shown in the form of two numbers — the diameter of the inner and outer pipes, respectively. The most popular values are 60/100, 80/80 and 80/125. Non-coaxial flues can be 100, 110, 125, 130, 140, 150, 160, 180 and 200 mm.

Maximum gas consumption in the boiler with the corresponding energy source (see above). Achieved when the gas heater is operating at full capacity; with reduced power and consumption, respectively, will be lower.

Note that boilers of the same power may differ in gas consumption due to the difference in efficiency. While the more fuel-efficient models tend to cost more, the price difference pays off in gas savings.

— Gas pressure drop. This protection system ensures that the boiler is switched off in the event of a critical drop in gas pressure, insufficient for the normal functioning of the burner. In the event of such a fall, the valve that supplies gas to the burner is closed and blocked. After the restoration of gas pressure, it also remains closed; it is necessary to open it and resume the gas supply manually.

— Water overheating. A temperature sensor automatically turns off the boiler when the temperature of the water in the system is critically exceeded.

— Flame loss. Flame loss protection is based on a sensor that monitors the combustion of gas and automatically stops its supply. It prevents the room from filling with gas and the possible tragic consequences of this.

— Draft control. In boilers with an open combustion chamber, to maintain normal conditions in the room where such a boiler is installed, constant removal of products of combustion into the atmosphere is necessary. The lack of a normal draft in the chimney can lead to the accumulation of combustion products in the room. The draft protection system prevents this by automatically turning off the boiler when it detects the release of combustion products outside the chimney.

— Power outage. Most modern boilers h...ave an electronic control system; in addition, many structural elements (pumps, valves, fans, etc.) are also powered by electricity. Thus, a power outage during the operation of the boiler will inevitably lead to an abnormal mode of operation, which is fraught with breakdowns and even accidents. To prevent such cases, a power outage protection system is installed, which completely stops the operation of the boiler in the event of a power outage. When the power supply is restored, the boiler needs to be restarted manually.

— Water circulation failure. This protection system controls the normal movement of the water through the heating circuit. Water circulation failure can lead to overheating of some elements of the boiler and damage to it. To avoid this, if the circulation is disturbed, the system turns off the pump and shuts off the gas supply to the burner.

— Frost protection. A system that controls the temperature in the heating circuit. Freezing of the liquid in the circuit disrupts the normal operation of the heating, which may require heating of the pipes and lead to system damage. To avoid this, when the water temperature drops below 5 °C, the burner is ignited, the circulation pump is activated, and the circuit warms up to a temperature of about 35 °C — thus preventing the formation of ice in the pipes.