Gas boilers of domestic production. Rating of gas boilers of double-circuit domestic and foreign manufacturers
There are many manufacturers of floor gas boilers in Russia, whose products differ in the type of heat exchanger, the number of circuits, power and other characteristics.
Material of heat exchangers
Heat exchangers in domestic single-circuit gas boilers are made of cast iron or of stainless steel. Cast iron elements have good heat dissipation 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:
- big weight;
- high price;
- requires care when using due to fragility.
Heating units with stainless steel heat exchangers they cost less and weigh less, but they are more susceptible to corrosive processes and last up to 20 years.
Domestic manufacturers, focusing on demand, produce more floor models with steel heat exchangers, as they are much cheaper and easier to operate.
In double-circuit floor standing boilers the secondary heat exchanger, which works to supply hot water, is usually made of copper and has the form of a coil that encircles the primary circuit.
Note! For domestic double-circuit units, heating and hot water supply cannot work simultaneously. When turned on DHW heating coolant in the primary circuit stops.If you turn on the hot water supply to a short time, then the coolant temperature has time to fall by 1-2 ºC, which is not significant.
For getting more warm water at minimal cost gas, a scheme is used when a boiler is connected to a single-circuit unit indirect heating. Domestic floor gas boilers fully adapted to the quality of Russian gas and water in the pipeline.
Energy independence
An important parameter by which a gas boiler is chosen is its non-volatility. A common problem in the Russian hinterland is frequent power outages. Great solution in this case it becomes a non-volatile boiler. It works on mechanical control and with the help of physical phenomena. The required mode is set manually.
Volatile domestic units are distinguished by the presence of many functions. They are equipped with imported automation. Located in the body circulation pump, which causes the coolant to move. Automation provides control over safety, operating parameters and maintains established regime heating.
Volatile heating devices consume less gas, as they are equipped with a two-stage burner operating in two modes: at 35% and 100% of the rated power. In this case, fuel savings are about 30% compared to non-volatile boilers.
"Pros and cons" of domestic gas boilers
The advantages of domestic gas boilers are as follows:
- work on almost any gas pressure;
- heat exchangers withstand hard water;
- easier to find spare parts;
- cheap accessories.
But the presented units have a lot of disadvantages.:
- yield leadership in reliability and efficiency to foreign analogues;
- automation of work processes is done with shortcomings;
- short service life;
- no models with modulating burners and microprocessor control.
Thanks to perfect automation heating devices foreign-made, they consume 30% less fuel than domestic ones. In appearance and ease of use, Russian units are also inferior to foreign ones.
The most popular brands of floor gas boilers
Consider the products of the most famous Russian companies that produce floor-standing gas boilers.
Heating devices "Lemax"
Lemax gas boilers are manufactured at an enterprise in Taganrog. They are produced with cast iron and steel heat exchangers. Lemax products are divided into 3 series:
- Premium class boilers up to 40 kW are made of high quality steel and covered with an anti-corrosion coating. They are equipped with protection against overheating, cessation of traction and the formation of soot.
- Premium Nova equipment has an open firebox, steel contours and special automation.
- Single-circuit gas boilers Leader 40 are able to heat a room up to 390 m². The primary Czech heat exchanger is made of cast iron. Even though Leader 40 is not dependent on electricity, it consumes some gas.
Products of the Zhukovsky plant
The Zhukovsky plant produces reliable and low-cost devices that operate autonomously and do not depend on power supply. The most powerful of them are able to heat an area up to 600 m². Floor gas boilers are represented by three main lines:
- Economy class units - equipped with foreign automatics SIT;
- devices of the Universal class - equipped automatic system Mertik Maxitrol;
- Comfort class boilers are equipped with automation developed in-house.
The efficiency of dual-circuit models is 88%. This is enough to get hot water after opening the tap. Floor gas boilers manufactured by ZhMZ are produced in the form of a cylinder or a square. The entire model range is equipped only with steel heat exchangers.
Equipment of the plant "Conord"
The model range of the Conord plant has large range capacities. The boilers are equipped with a steel heat exchanger and have an efficiency factor of 91%. Single-circuit units are equipped with Italian-made automation. Dual circuits are equipped with SIT automatics. She is watching safe work unit. In the event of a failure or breakdown, the automation stops the boiler.
Conord heating devices are able to operate even with low fuel pressure in the pipeline. They have compact dimensions, low noise level and beautiful appearance. In the video you can see how to replace the old AOGV model with a new one.
Floor boilers "Signal"
Gas units "Signal" are produced in Engels. They produce single-circuit and double-circuit boilers with a capacity of 6.4 to 40 kW. The units of the presented brand are equipped with steel heat exchangers, burners, safety sensors and an automatic control system. They are comfortable, easy to use and can last almost 20 years.
"Borin" gas boilers
Floor-standing single-circuit and double-circuit gas boilers are produced in Lipetsk. The power of the Borinsky devices is enough to heat a room from 90 to 300 m². There are models that are equipped with both imported and domestic automation. The presented gas boilers are different high efficiency, simplicity, reliability and economy. Their automation ensures high safety, as well as precise and stable operation.
The disadvantages of the "Borin" floor gas boilers include high sensitivity to gas quality and susceptibility to corrosion.
The best domestic floor gas boilers
Having studied all the proposals of the domestic market, gas boilers were selected in the following categories:
- the cheapest;
- the most economical;
- the most convenient to use.
Rostovgazoapparat AOGV 11.6
The most affordable gas boiler of domestic production Rostovgazoapparat AOGV 11.6. This is a single model convection type. With a power of 11.6 kW, it can heat a house up to 100 m². Its efficiency is 90%. The unit is independent of electricity and can operate both on natural and on liquefied gas.
Note! Most of all, such a unit is suitable for summer residents and residents of regions where there is no district heating and frequent power outages.Consumers appreciate the unpretentiousness, availability and ease of maintenance of this model. By cons gas boiler include: outdated automation, outdated appearance and errors in the readings of a pointer thermometer.
The presented floor gas boiler with a capacity of 8 kW can heat a dwelling with an area of 80 m². Its main advantage is a record low gas consumption - 0.4 cubic meters. m/h This boiler is a single-circuit model equipped with an injection micro-torch burner and a steel heat exchanger with an anti-corrosion coating. It also has protection against overheating and traction interruption. The operation of the unit does not depend on the power supply.
ZHMZ AOGV-23,2-3 Comfort N
The AOGV-23.2-3 Comfort N model is considered the most convenient. It replaced outdated modifications. The advantages of this boiler are: affordability, ease of installation and operation. It has a capacity of 23.2 kW, which is enough to heat a room up to 200 m². The unit can operate on main or bottled gas, equipped with open cam combustion and mechanical control. The safety of work is controlled by foreign Honeywell automation.
Benefits of installing a gas boiler for heating in Russia are obvious: gas supplies are more stable, it will not be turned off unexpectedly, and gas is cheaper than electricity. What do we need from a good gas boiler? To keep the house warm, so that the device is safe and lasts a long time.
Temperature indicators for all models are approximately the same. Everything heating boilers meet safety standards, but more expensive models have a complex multi-stage self-diagnosis system, effective protective automation. Reliability and service life are determined by the quality of parts and assembly (and, of course, you must follow the rules of use!). We studied the opinions of experts and customer reviews and selected best models gas boilers that combine reliability, safety and efficiency.
First, let's figure out which manufacturers of gas boilers deserve our attention in the first place.
Which company's gas boiler is better?
The vast majority of gas boilers in our stores are imported. Mostly European. In our opinion, the rating of the best foreign manufacturers of gas boilers looks like this:
- Wolf (Germany)
- Vaillant (Germany)
- BAXI (Italy)
- Protherm (Slovakia)
- Bosch (Germany)
- Buderus (Germany)
- Navien (Korea)
and some others.
Among our domestic manufacturers of gas boilers, we single out two plants:
- Zhukovsky Machine-Building Plant (ZHMZ). Produces boilers brands AOGV(single-circuit, heating) and AKGV(two-circuit, heating and hot water).
- OOO Zavod Conord. Located in the city of Rostov-on-Don. Produces gas boilers and columns CONORD, solid fuel boilers DON, industrial boilers and other equipment.
In the article, we will conduct a small investigation of the current market for gas heating boilers. We are interested in who and under what brands domestic gas heating boilers are produced and what are their features compared to imported offers.
Evaluation of functionality and quality
Let's start with the bad.
I would like to start with rave reviews about domestic producers; however, according to experts, in terms of quality, fault tolerance, functionality and level of service, gas boilers are divided approximately like this:
- The first echelon is the Germans and the Swedish CTC. Impeccable quality and the implementation of all technological innovations in the shortest possible time.
- The second tier is Italy, Spain, Czech Republic, Slovakia, France. Good product without specific problems. Often, not inferior to the first-tier manufacturers in terms of reliability, but with a slightly worse level of service and somewhat more primitive technologically.
- The third echelon is the products of Russia, Ukraine and Belarus. Alas.
At the same time, domestic boilers are the leaders in sales in the Russian market. Paradox?
Not at all. They are reliable enough not to frighten the owners with the danger of fire or explosion. But the main thing is not this. They are cheap compared to European products.
Example? Please.
Let's take two with a closed combustion chamber with a capacity of 24 kW:
- Neva Lux 7224 - 18,400 rubles.
- Vaillant TurboTEC Plus VUW 242/3-5 - 45,000 rubles.
And now let's ask ourselves, what would a buyer who is far from the intricacies of work and maintenance of boilers prefer, seeing absolutely identical characteristics in front of him?
There is no need to think that there is total darkness and horror in domestic production. Yes, neither in terms of convenience, nor in terms of the level of service and maintenance, Russian gas heating boilers can compete with the same Vaylent or Buderus. However, for the most part, these are quite solid products that honestly work out their value.
ZhMZ
Zhukovsky Machine-Building Plant offers three main lines of boilers:
- Economy with automatic own production ZhMZ. Price - from 11000 to 16300 at the prices of an official dealer.
Please note that depending on the markup of the seller, the actual retail prices can vary greatly.
All boilers of this line are non-volatile (and, therefore, equipped with ignition from a piezoelectric element) and differ in thermal power. The coolant is water or antifreeze with natural or forced circulation. Fuel is natural gas. When changing nozzles and igniter, it is possible to switch to liquefied gas.
- "Universal" with SIT automation has a price range from 12,200 to 23,250 rubles. And here we see non-volatile boilers with piezo ignition; and here the price tag depends on the thermal power.
- In the "Comfort" series we see Mertik Maxitrol automation and, again, non-volatility (which means a pilot burner and piezo ignition), the ability to switch to liquefied gas in boilers with a capacity of up to 29 kW inclusive and a spread in thermal power from 11.6 to 63 kW, and prices from 12200 to 82400.
Rostovgazoapparat
This is a company that was the first in Russia to launch the production of gas heating equipment. On the this moment she owns most of market (of course, in comparison with other domestic producers).
A thoughtful study of the site of this manufacturer can bring the reader the following discoveries:
- Boilers are produced under three brands: Siberia with Italian SIT automation and power from 11.6 to 35 kW; RGA (boilers also equipped with Italian automatics, but already in the power range up to 17.4 kW) and AOGV - boilers with automatics of our own design. The power range and they have 11.6 - 35 kW.
- It is possible to heat a cottage using bottled gas, but it is recommended by the manufacturer only if the boiler power is not higher than 18 kW.
- All boilers, except for Siberia Space Design, can do without natural circulation, which makes the boilers completely non-volatile.
- The instruction strictly prohibits the installation of boilers with your own hands. Which, in general, is correct: safety takes precedence over cost savings.
In the photo - AOGV boiler with a capacity of 17.4 kW.
Factory Conord
And these boilers are produced in Rostov; however, we can see them under the quite logical Conord brand.
What will please us with this product?
- Issued in full steel boilers and with a cast-iron heat exchanger.
- The power of steel boilers is in the range from 8 to 31.5 kW. Cast iron power - 16, 25 or 33 kW.
- All boilers are positioned as completely non-volatile, which means the same piezo ignition and a constantly burning igniter.
- The price tag pleases the economical buyer: steel boilers cost no more than 20,000 rubles, boilers with a cast-iron heat exchanger with a power of 25 kW - 28,000.
- All boilers are equipped with atmospheric burners (without pressurization), which the manufacturer verbosely emphasizes as an advantage.
However: let's not be unfair to the manufacturer.
Production experience gas equipment in three decades, in any case, causes respect.
In addition, Conord guarantees the operation of its boilers at a line pressure of less than half the nominal pressure, which is what devices with forced draft burners can usually boast of.
Because in Russian Federation natural gas remains the cheapest and most popular type of energy carrier used for heating buildings and structures, boiler equipment for its burning is in steady demand. Among the wide range of such equipment on the market, gas boilers Russian production occupy a special place. They take first place main secret success - low cost, accessibility for all segments of the population.
Advantages of boilers from Russian manufacturers
The first thing to note is the attractive price of the products. Any gas boiler of European or South Korean production is significantly more expensive and this is decisive factor. At the same time, it should be taken into account that the production of gas boilers in Russia is becoming more and more high-tech, using the latest technical solutions.
Equally important are the features and conditions of gas supply inherent in Russia and the CIS countries. Practice shows that imported installations often work unreliably or cannot function at all under these conditions. While manufacturers of gas boilers in Russia adapt their products to the following factors:
- Insufficient gas pressure in the line. The phenomenon is observed in remote areas with a large length of the gas pipeline and the presence of many consumers on it.
- Low gas pressure due to wear and tear of obsolete equipment of gas control points.
- High contamination of the gas with various impurities and corrosion products from old metal pipes.
- The increased content of water vapor, which, when the fuel burns, causes the destruction of the metal elements of the heating installation.
Most of the gas boilers manufactured in the Russian Federation are able to operate in conditions of unreliable power supply or its complete absence. This plays a big role when choosing a unit for remote regions, where gravity heating systems are often used. In the most simple models Russian manufacturers of gas heating boilers use, which further reduces their cost. Water heating installations, the price of which is slightly higher, are equipped with imported automation elements. However, their number is minimal, safety automation details ensure product compliance regulatory documents and no more. Great importance also has the cost and ease of maintenance of the equipment.
The qualifications of most gas service specialists allow them to carry out maintenance and repair of domestic boiler plants of a simple design. For this reason, the repair of high-tech products from abroad can be a real problem, given the prices of spare parts.
Gas heating units manufactured in Russia have their drawbacks:
- Relatively short service life.
- Low build quality of products and materials used.
- Absence a large number useful and important options that provide comfortable operating conditions for the homeowner.
The most popular Russian manufacturers of gas boilers that deserve attention are the Zhukovsky plant (Zhukovsky), the Conord plant (Rostov), the Gazapparat plant (St. Petersburg). To get acquainted with their products, it is worth swiping short review each of them.
Products of the Zhukovsky plant
This manufacturer has been producing boiler equipment for about 40 years. In the series of gas boilers for heating private houses, there are more than 30 models sold under the brands AOGV, AKGV and KOV. Most of them are produced in three trim levels:
- Economy - the minimum configuration, which includes Russian-made security automation.
- In the configuration of the Universal, foreign-made security automatics are installed.
- The Comfort package, in addition to foreign automatics, is additionally equipped with overheating protection, improved thermal insulation of the case and an indicating thermometer.
The range of thermal power of manufactured units for the home is from 11 to 68 kW. Household Russian gas boilers of the ZHMZ enterprise, for the most part, have a design that works without power supply. It includes cast iron heat exchanger and a single-stage burner that operates at atmospheric pressure. The ignition method in the budget and medium configuration is manually, in the Comfort version the igniter is ignited using a piezoelectric element. AKGV modifications have an additional DHW preparation circuit for household needs.
Heating installations Conord
Under the CONORD brand, Russian gas boilers with a steel heat exchanger and an atmospheric gas burner are sold. The units are equipped with gas safety valves of two types:
- Italian-made SIT automatic valve;
- thermohydraulic valve.
The range of heating units includes 21 models covering the power range from 8 to 30 kW. Some of these models are equipped with a DHW supply circuit with a flow heat exchanger. All modifications are equipped with a traction control sensor, at the signal of which the automatic valve shuts off the gas.
Under the DON brand, a Russian-made outdoor gas boiler is produced combined type. These are 2 models with a capacity of 20 and 40 kW with a steel combustion chamber, in which atmospheric burner if you want to run on gas. Without it, the unit burns wood or coal and is completely independent of electricity.
Boilers manufactured by the Gazapparat plant
Under the Neva Lux brand, you can purchase an inexpensive wall-mounted Russian gas boiler of this enterprise located in St. Petersburg. Products are not much inferior to foreign counterparts, since they have a wide range of options and safety and automation functions. The heat exchangers in the units are steel, there are modifications with a flow heat exchanger for DHW needs. The air supply method is forced, by a fan - a smoke exhauster through a coaxial chimney.
The burners used in Neva Lux boilers can change operating modes at the command of the controller. The power range of produced wall-mounted boilers is from 10 to 35 kW. Automation and control components are made in Europe, which makes the operation of the heating plant economical and reliable. The set of boiler automation functions is as follows:
- burner flame control;
- traction control;
- circulation pump;
- pump protection function against jamming in the summer;
- fan speed control;
- touchscreen;
- automatic electric ignition;
- possibility of programming for 7 days.
Conclusion
When choosing a boiler for your home, you should pay attention to the products of Russian enterprises. The disadvantages of gas boilers are smoothed out by low cost, bringing the price-quality ratio into line, that is, Russian products honestly work out the money spent on them. Some of them, in many respects, began to approach European or South Korean counterparts.