Review of domestic solid fuel boilers "Taimen"

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Published: 11/15/2019

Reading time: 5 min

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Many homeowners are happy to install gas boilers indoors for heating and hot water supply, so as not to depend on the whims of bad weather and pitfalls associated with the operation of municipal heating systems.

In this situation, the correct choice of boiler equipment is of great importance, for which you will need to know how to calculate the power of a gas boiler.

If it exceeds the actual heat loss of the facility, then part of the cost of generating thermal energy will be lost. And units with low heating capacity will not be able to provide households with the required amount of heat.

• 1 What is the power of a gas boiler
• 2 Calculation of the power of a gas boiler depending on the area 2.1 Calculation of a single-circuit heating boiler
• 2.2 How to calculate the power of a double-circuit boiler
• 2.3 Calculation of the power of an indirect heating boiler

Floor models

The new boiler must provide the required heating power and performance of the hot water supply system (DHW). The first value is proportional to the heated area, and the second represents the sum of all water withdrawal points. Both parameters depend little on the heater design. The floor-standing model is chosen due to its low price, lack of strict requirements for pressure stability in gas and water supply systems, and the ability to work without electricity.

The main thing that the consumer expects from a hot water system is that it provides the required performance and a constant temperature of hot water. When choosing a new boiler, factors such as high efficiency, low fuel consumption, long-term operation with water of any chemical composition, and operational safety are also taken into account.

Other characteristics (environmental friendliness, level of automation, ease of operation) are not critically important and are considered secondarily.

Single-circuit gas boilers are being replaced with new units that include water heating. The characteristics of the equipment allow it to be placed anywhere in a living space, without requiring a separate room. Consumers give priority to Russian products because they are more repairable and easier to maintain than imported analogues.

Fondital Madeira Solar KRBS MZ 12

This is a floor-standing, double-circuit 10-kilowatt condensing-type unit, suitable for heating 93 m² of area. It weighs 276 kg and has dimensions of 1857x600x985 mm. Equipped with a built-in boiler and circulation pump. When operating at full power, it consumes 1.27 m³/hour of gas at an inlet pressure of 20 mbar. The designers introduced 2 additional operating modes - “summer” and “warm floor”.

Advantages:

• Efficiency 105% due to the energy of exhaust steam;
• expansion tank 10 l;
• closed combustion chamber;
• boiler with a capacity of 300 l;
• The heating and DHW circuits operate up to 3 and 6 bar, respectively.

Flaws:

• heavy weight;
• high electricity consumption (385 W).

Aton aogvm -10ev/emv

In the documentation for the ATON Atmo 10EB model, the manufacturer indicated a rated power of 10 kW, which is enough to warm up a room of 75 m².

To achieve the declared characteristics, the pressure in the gas pipeline must be at least 12 mbar. The weight of the heater is 46.5 kg. Dimensions are 746x324x610 mm.

Safe operation is ensured by several sensors that monitor:

• overheating of the coolant in any of the circuits;
• gas supply interruption;
• burner flame disappears;
• lack of traction or lack of it.

Advantages:

• the operation of the device does not depend on the availability of electricity;
• the temperature rise of the heated water is Δt=35°C.

Flaws:

• low DHW capacity 4 l/min;
• There is no built-in pump for the heating circuit.

Termomax a 10ev

The gas double-circuit floor-standing boiler develops 10 kW and is supplied in a floor-standing version. Its energy is enough to heat 80 m² and provide hot water.

The weight of the device does not exceed 62 kg. Dimensions (HxWxD) are 760x357x382 mm. In maximum heating mode, fuel consumption is 1.11 m³/hour.

Advantages:

• non-volatile;
• the pressure in the heating circuit does not exceed 3 bar;
• many sensors that monitor emergency situations, such as gas supply cutoff, water overheating, burner extinguishment or lack of draft in the chimney.

Flaws:

• no built-in circulation pump;
• low DHW productivity (at Δt=35°C 4.1 l/min).

"Lemax Premium-10"

In the manufacture of Premium series boilers, high-quality metal of the EN 10130:2006 standard (GOST 16523-97 and 9045-93) with a thickness of 2 mm is used. For greater efficiency, the radiator is given a special shape. Treatment with an inhibitory compound and subsequent coating with anti-corrosion enamel (withstanding temperatures of 750°C) protect the heat exchanger from exposure to aggressive environments when heated.

Thanks to this technology, the radiator operates uninterruptedly at a pressure of 2 bar throughout the warranty period.

Advantages:

• equipped with sensors that ensure safe operation (overheating of the stainless steel heat exchanger, reverse draft);
• remains operational at a gas pipeline pressure of 13 mbar;
• injection burner;
• economical, efficiency is 90%;
• pipes with a diameter of 40 DIN allow you to heat the room due to the natural circulation of the coolant.

Disadvantages of the boiler:

• heavy weight (39 kg);
• open burner type.

Owner reviews of solid fuel boilers Taimen: advantages and disadvantages

Wall-mounted gas boilers

In this group of equipment, the leading products are from foreign manufacturers. Inside the housing there are not only a standard burner, heat exchanger and monitoring and control units, but also 1 or 2 circulation pumps, an expansion tank, a pressure gauge, a thermocouple, a Wi-Fi module, etc.

Elements of heating and hot water supply systems, assembled in one device, simplify installation. In addition, the installation of a new unit is free of charge, while the connection of other attachments is paid by the buyer. Small dimensions allow it to be placed in any kitchen without disturbing the interior.

Fondital minorca ctfs 9

A double-circuit wall unit heats an area of ​​74 m². It has the smallest dimensions among the models under consideration (HxWxD) - 700x400x250 mm. Operation is maintained even at low gas inlet pressure. Its nominal value is 20 mbar, at which the fuel consumption is 1.1 m³/hour. The device is equipped with electronic ignition and controls the presence of flame using the ionization method.

Advantages of the model:

• low power consumption from the mains 102 W;
• coaxial chimney;
• high DHW productivity (11.4 l/min);
• separate heat exchangers for heating and hot water preparation;
• summer operating hours;
• selection and equipment of a room temperature sensor;
• closed combustion chamber.

The disadvantages of the model are associated with its small dimensions:

• the pressure in the hot water circuit should not exceed 6 bar;
• low efficiency – 89.9%;
• unit power is less than 9.3 kW;
• reduced temperature limits for hot water and coolant – 62°C and 83°C.

Baxi eco4s 10f

This model of wall-mounted gas boiler belongs to the fourth generation of the series and is distinguished by its compact dimensions (730x400x299 mm), especially its depth. The double-circuit model with a closed burner with a power of 10 kW is easy to install and has good performance. The bright display continuously informs about the current status of the equipment, current settings and system parameters.

The combustion chamber has good performance:

• the microprocessor carries out its gradual ignition;
• the flame is modulated electronically in all modes;
• the unit remains fully operational when the pressure in the gas pipeline drops to 5 mbar;
• the burner is made of a special grade of stainless steel;
• air is supplied to the chamber using a patented method;
• equipment can operate from a liquefied gas source.

Baxi eco home 10f

Double-circuit device with a power of 10 kW with a closed burner for heating rooms of 80 m². It is characterized by small dimensions (HxWxD - 730x400x299 mm) and a weight of 30 kg. The DHW circuit has increased productivity (Δt=25°C) – 13.7 l/min.

The advantages of this model are:

• built-in GRUNDFOS pump;
• modulating burner;
• connection of the “warm floor” system;
• work in summer mode;
• high efficiency 92.9%;
• economical fuel consumption 1.19 m³/hour, the value is given for maximum load;
• increased volume of the expansion tank (6 l).

The disadvantages of the boiler are:

• no remote control unit;
• there is no built-in boiler;
• limitation of the upper limit of coolant temperature 85°C.

Protherm Gepard 12 MTV

The 11.5 kW unit is designed for gas pumped at a nominal pressure of 20 mbar. An atmospheric burner is used. The peak power consumption of electricity is 136 W. The DHW circuit provides 11 l/min. The heated area declared by the manufacturer is 95 m². The coolant heats up to 85°C. For comparison, the Proterm Gepard 23 MTV boiler heats up to 150 m².

Advantages of the boiler:

• high DHW productivity, at Δt=25°C reaches 11 l/min;
• the ability to switch between “Winter” – “Summer” modes;
• microprocessor control;
• “warm floor” support;
• precise power control (saving fuel and electricity consumption);
• built-in expansion tank 5 l;
• high efficiency – 93.2%;
• there is a circulation pump.

Flaws:

• increased fuel consumption – 1.39 m³/hour;
• preparation of hot water only in flow mode;
• The heating circuit heat exchanger is limited to 3 bar.

Equipment protection systems respond to gas supply interruption, water overheating, lack of draft, burner flame going out, coolant freezing and other disturbances in its circulation.

This manufacturer also has a 11 kW double-circuit gas boiler “Proterm Gepard 11 MOV” with an open combustion chamber.

NAVIEN Deluxe-10K

The manufacturer paid attention to service functions such as protection against freezing or overheating. As soon as the coolant temperature drops below 10°C, the circulation pump automatically turns on and thus equalizes it by forced movement. When the reading is less than 6°C, ignition will occur to warm the coolant to 21°C.

When the supply voltage surges, reaching +/-30% of 230 V, the SMPS (Switched-Mode Power Supply) chip is triggered and puts all electronics into safe mode. In this way, breakdown of complex and expensive equipment is prevented.

The owner of a NAVIEN boiler may not even notice a strong drop in pressure in the gas pipeline to 4 mbar, since the equipment will continue to function safely. The same picture is observed when the pressure of the supplied water is reduced to 0.1 bar. These situations are not uncommon in houses located far from main communications.

The wall-mounted gas boiler integrated individual components of the heating circuit. The solution turned out to be in demand by the market, as it reduced the cost of equipment and installation work. The demand for such projects up to 10 kW is constantly growing.

You may be interested in knowing which gas boiler to choose for heating a house of 200 square meters.

Official website: where to view all models and operating instructions

A snapshot of the manufacturer's official website.
The original official website is located at https://www.koteltt.ru/.

By going to the “Products” → “Boilers” section you can see all available models and their descriptions. For each model, in the “Passport” tab, electronic copies of complete operating, installation and configuration instructions are attached. The manuals for each model describe the characteristics, installation diagram, algorithm for turning on and adjusting the operation, maintenance features, and contain clear schematic images and photos.

Pellet boilers with automatic fuel supply Burning duration from 7 to 30 days thanks to the storage bunker

What is Kholmov's boiler?

Kholmov boilers are long-burning solid fuel devices. Their design has two vertical chambers. The first shaft, a larger one, is necessary for fuel loading and the combustion process. Fuel combustion is carried out only in a closed space in the lower part of the stack, because of this the unit is also called a shaft-type boiler with bottom combustion. The second shaft, which is smaller, burns fuel gases. In addition, it contains a heat exchanger, and it is here that the water for the heating system is heated with the greatest force.

The mine boiler operates on various solid fuels. The boiler is produced with a capacity of 10, 12, 25 kW. A full load of the furnace ensures that the unit heats the room for an average of 12-16 hours. Dependent and independent units are manufactured.