Russian-made gas boilers: overview of manufacturers

Lemax

The Lemax company was founded in 1992 in Taganrog.

The manufacturer Lemax markets heating products at an affordable price, while the boilers have proven themselves to be reliable and highly functional. In the product line you can see several series of units. Almost all of them are floor-standing and have an open combustion chamber.

Gas floor-standing single-circuit boiler Lemax Leader-25

All models differ in power, cost and other characteristics:

1. The Lemax Premium Nova series floor-standing gas boiler has an open combustion chamber and is intended for heating only (single-circuit). The series is represented by models with power from 7.5 to 30 kW. A special feature of these units is the presence of a thermomanometer, which is needed to monitor the pressure in the heating system. Models require the connection of a turbo head.
2. Lemax Premium is a Russian single-circuit floor-standing gas boiler. It also has an open combustion chamber. Powered by natural gas. The line includes units with power from 7.5 to 60 kW. All models are equipped with a removable top panel and cladding parts. The efficiency is high due to the improved design - the heat exchanger has become larger and a new turbulator has appeared.
3. Lemax Premium (B) is a gas floor-standing boiler (made in Russia). There is an open combustion chamber, one circuit. The boilers operate on natural gas. The series has five boilers with a power from 12.5 to 30 kW. Here the temperature controller is located on the front panel of the unit with a temperature indicator. This makes it possible to set the desired heating mode.
4. The Lemax Leader single-circuit gas boiler is made of high-quality cast iron 4 mm thick. In it, the heat exchanger is coated with a special solution that prevents rust from appearing. The units have gas valves from the Italian concern Sit. All models have different powers from 16 to 50 kW and high efficiency (up to 91%).

You can read more about the features of gas boilers with a cast iron heat exchanger here.

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5. Lemax Prime-V 24 is a double-circuit gas boiler. It has a closed combustion chamber and is wall mounted. Power 24 kW. A domestic wall-mounted gas boiler of this series can heat an area of ​​240 m² on average. Has an efficiency factor of 92.5%.

The most popular models

It is very difficult to consider the features of absolutely all domestic equipment, so we will focus on those that are in greatest demand among the population. One of them is a Russian-made floor-standing gas boiler AOGV, produced at ZhMZ.

The main heat exchanger for them is manufactured on an automatic line, which avoids defects. Its design uses turbulators that change the direction of exhaust gases and, taking heat from them, transfer it to the heating system.

In such devices, the efficiency reaches 89%. In dual-circuit models, the additional circuit is made of copper, which allows you to receive hot water immediately when you open the tap. The boilers have a new burner design that provides for complete combustion of fuel and operation at reduced pressure in the gas line.

Zhukovsky Machine-Building Plant (ZhMZ)

The Zhukovsky Machine-Building Plant entered the market in 1939 and worked in the aerospace industry. After some time, they began producing units of the AGV series.

The ZhMZ company specializes only in floor-standing boilers. Many of them (about 30%) have a power of 11 kW. Designed for heating areas no more than 110 m².

The following series of boilers are produced:

1. Economy series boilers are equipped with proprietary automatic equipment. All models do not depend on the power supply network and have different capacities. Antifreeze or water with forced or natural circulation are used as a coolant. The fuel for the series is natural gas. If desired, you can switch the operation of the units to liquefied gas (you need to replace the nozzles).
2. Floor-standing boilers of the Universal class have Sit automatics. Models vary greatly in price (depending on power (from 11.6 to 29 kW)), they depend on electricity, have piezo ignition and high efficiency. They can be single-circuit or double-circuit.
3. The energy-dependent boilers of the Zhukovsky Machine Plant of the Comfort series have Mertik Maxitrol automation, piezo ignition and a pilot burner. If desired, you can switch the operation of units up to 29 kW to liquefied gas (you need to replace the nozzles).

Construction of a gas boiler ZhMZ

Read Types of gas boilers by number of circuits and type of combustion chamber

Review of the best dual-circuit models

ATON Atmo 10ЕВМ 10 kW

Trouble-free unit with mechanical control. High quality assembled. The combustion chamber is open, efficiency is 90%. Material

heat exchanger - high quality steel. Only natural gas is suitable as fuel. Automation - EUROSIT.

The coolant temperature range is 50-90 °C. The model operates completely silently, is easy to set on fire and rarely breaks. Chimney diameter - 110 mm. Capable of heating an area of ​​about 100 sq.m.

Specifications:

• Thermal power: 10 kW;
• Weight: 44 kg;
• Dimensions: 380x760x385 mm.

pros

• thermometer;
• gas control;
• inexpensive;
• long warranty period.

Minuses

• small heated area.

Protherm Bear 30 KLZ 26 kW

Massive double-circuit boiler with a full set of amenities: pressure gauge, thermometer, auto-ignition, gas control

, flame modulation, autodiagnostics. Included: built-in circulation pump and expansion tank.

In case the pump is blocked, special protection is installed. Indicators in the DHW circuit are 40-70 °C. Natural gas consumes 3 cubic meters. m/hour, liquefied - 2.4 kg/hour. A single-phase network extension is required.

Specifications:

• Thermal power: 18.20 - 26 kW;
• Parameters: 505x1385x730 mm;
• Weight: 155 kg.

pros

• warranty period: 730 days;
• electronic control;
• built-in boiler;
• overheat protection.

Minuses

• very heavy.

Lemax Premium-20B 20 kW

Budget model made of steel, impact-resistant and durable. The gas supply stops automatically if

failure, as well as the burner is switched off when abnormally high water temperatures are detected.

Long warranty period (3 years). There is overheating protection, a thermometer on the body and gas control. The volume of gas consumed is 2.4 cubic meters. m/hour. The coolant can withstand a maximum of 90 degrees. Capable of heating 200 sq.m. premises.

Specifications:

• Dimensions: 556x961x470 mm;
• Weight: 83 kg;
• Claimed power 20 kW;
• Unit parameters: 556x961x470 mm.

pros

• inexpensive;
• large heated area;
• durable body;
• good build.

Minuses

• susceptible to corrosion;
• the main parameters can only be adjusted manually.

Rostovgazapparat

The Rostovgazapparat company was founded in 1959 in Rostov-on-Don.

About 50% of the units have a heat exchanger made of cast iron or steel, with powers of 23 and 29 kW. The general power range is from 11 to 100 kW.

You can read about the types of heat exchangers for gas boilers here.

Equipped with foreign automation. The models are presented by AOGVK Rostov, KGDO Siberia and AOGV Rostov Siberia.

The Russian-made floor-standing gas boiler is represented by the AOGVK series. The equipment of the units is traditional. The models are designed for heating and supplying hot water to residential premises. They operate on natural and liquefied gas. Do not depend on the power supply network. The advantages of this series are the affordable price, durability of the unit, ease of installation and availability of service. Series heat exchanger made of steel, open type burner.

Gas cast iron boiler Siberia KCHGO-50

“Pros and cons” of domestic gas boilers

The advantages of domestic gas boilers are as follows::

• work at almost any gas pressure;
• heat exchangers can withstand hard water;
• easier to find spare parts;
• cheap components.

But the presented units have many disadvantages:

• they yield leadership in reliability and efficiency to foreign analogues;
• automation of work processes is carried out with shortcomings;
• short service life;
• There are no models with modulating burners and microprocessor control.

Thanks to the perfect automation of foreign-made heating devices, they consume 30% less fuel than domestic ones. In appearance and ease of use, Russian units are also inferior to foreign ones.

Conord

The Conord company was founded in 1979.

This is a manufacturer from Rostov, producing units with two circuits and one, of different capacities. The boilers have useful features that can save up to 20% of fuel. The kit includes an additional coil.

Conord specializes in the production of steel gas boilers for heating a private home with a cast iron heat exchanger. The units do not depend on the power supply network, which means they have piezo ignition and a stably burning igniter. Open type burner.

Floor-standing gas heating boilers from Russia brand Conord have a power of 8-30 kW.

Single-circuit gas boiler of Russian production is represented by the names KSts-G-8, KSts-G-10, KSts-G-12, KSts-G-16, KSts-G-20, KSts-G-25, KSts-G-30 and can equip areas of 30-300 m² with heat. Boilers with two circuits are called KSts-GV-10, KSts-GV-12, KSts-GV-16, KSts-GV-20, KSts-GV-25, KSts-GV-30.

Features of the design of Russian gas boilers

Heat exchanger material

Heat exchangers in domestic floor-standing single-circuit gas boilers are made of cast iron or stainless steel. Cast iron elements are characterized by good heat transfer and high performance. Such heat exchangers can last for several decades. Cast iron is resistant to aggressive substances and corrosion. The heat exchanger is assembled from it in sections, and in the event of a breakdown, it can be repaired by replacing the element.

The disadvantages of cast iron boilers include:

• heavy weight;
• high price;
• requires care when using due to fragility.

Heating units with stainless steel heat exchangers are cheaper and weigh less, but they are more susceptible to corrosion processes and last up to 20 years.

Domestic manufacturers, focusing on demand, produce more floor-standing models with steel heat exchangers, since they are much cheaper and easier to operate.

…

In double-circuit floor-standing boilers, the secondary heat exchanger, which supplies hot water, is usually made of copper and has the form of a coil that encircles the primary circuit.
Note! With domestic double-circuit units, heating and hot water supply cannot operate simultaneously.
When the DHW is turned on, heating of the coolant in the primary circuit stops. If you turn on the hot water supply for a short time, the coolant temperature has time to drop by 1-2 ºC, which is not significant.

To obtain more warm water with minimal gas consumption, a scheme is used when an indirect heating boiler is connected to a single-circuit unit. Domestic floor-standing gas boilers are fully adapted to the quality of Russian gas and water in the pipeline.

Energy independence

An important parameter by which a gas boiler is selected is its energy independence. A common problem in the Russian outback is frequent power outages. An excellent solution in this case is a non-volatile boiler. It works by mechanical control and with the help of physical phenomena. The required mode is set manually.

Energy-dependent domestic units are distinguished by the presence of many functions. They are equipped with imported automatic equipment. The housing contains a circulation pump that causes the coolant to move. Automation provides control over safety, operating parameters and maintains the set heating mode.

…

Energy-dependent heating devices consume less gas, since they are equipped with a two-stage burner operating in two modes: 35% and 100% of the rated power. In this case, fuel savings are about 30% compared to non-volatile boilers.

Details about non-volatile units

Read about modern gas boilers, their features and characteristics here

How to convert gas boilers to liquefied gas and features of such work

Manufacturers rating

If you are interested in Russian-made floor-standing gas boilers, then you can consider the products.
This manufacturer is today one of the largest suppliers of gas boiler equipment. In the assortment you can find everything you need. Floor-standing models can be double-circuit or single-circuit, and most of them are equipped with new automation systems. Particularly noteworthy is the Siberia model, which has many positive advantages, including:

• energy independence;
• ability to work with variable gas pressure in the pipeline system;
• the use of basalt fiber as insulation, which is used for cladding spaceships;
• surface coating with powder paint, which has excellent protective properties and gives the product a presentable appearance.

Consumers who choose such floor-standing gas boilers made in Russia note that energy independence is a big plus, and variable pressure in the pipeline, at which such devices are ready to operate, cannot be called a rarity. Therefore, this issue is relevant, because local gas suppliers are not responsible for uniform fuel pressure. Among other things, you can choose a dual-circuit or single-circuit device with different power

However, you should pay attention to one nuance, which is expressed in the fact that double-circuit boilers use cast iron and steel heat exchangers, while single-circuit units are supplied only with cast iron analogues

Which boiler is better to choose

In addition to the main technical characteristics and price, the choice of heating unit is influenced by operating conditions and recommendations of specialists who regularly service gas-using installations in private homes.

Taking into account practical experience in the field of heating private housing and reviews of various types of heating equipment powered by natural gas, we give the following recommendations for choosing a heat source:

The most budget option for small houses (up to 150 m²) is a parapet non-volatile boiler with a direct chimney pipe exiting through the wall. These are produced with limited power - up to 15 kW. There is no need to specially build a chimney for it.

There are situations when it is impossible to install a suspended heat generator due to various reasons, for example:

• in the kitchen the walls are occupied by cabinets and household appliances;
• the building structure or its finishing does not allow hanging a unit weighing 50 kg or more;
• in the boiler room there is no space on the walls or it is difficult to install pipelines.

Then all that remains is to purchase a floor-standing boiler of similar power and install it in a convenient location. When we have decided on the installation method, we move on to choosing a heating installation based on the operating principle.