Overview of double-circuit gas boilers "Vaillant"

Features of Vaillant gas double-circuit boilers

The operation of the heating system should be reduced to turning the boiler on / off and setting the required temperature, and not endless fuss with settings, glitches and minor breakdowns. The key to trouble-free operation is the purchase of a double-circuit gas boiler from a well-known brand such as Vaillant. This equipment has been sold in Russia for more than 20 years, and it is very difficult to find worthy competitors.

What are the main features of Vaillant double-circuit gas boilers?

• Decent build quality is not just empty words, but a reality, as the company has been on the market for about 130 years. And during this time she learned to create high-quality equipment for heating;
• The German origin of the brand is another undoubted plus for the domestic consumer. Boilers from Germany are highly valued in Russia;
• A variety of models - boilers of various capacities and various operating principles are presented at the choice of buyers;
• Symbiosis of high efficiency and safety systems - ensures a long and economical service life of heating equipment.

Double-circuit boilers are good because having one device, you will provide your home with both heat and hot water.

In a word, Vaillant gas boilers double-circuit type are characterized by simplicity, reliability, environmental friendliness and economy. Not only consumers, but also specialists in heat engineering have already managed to convince themselves of the exceptional quality of the products.

Having visited a store with heating equipment and inquired about the availability of Vaillant double-circuit boilers from sales consultants, we will find that we have two types of equipment to choose from - these are convection and condensing type boilers. The latter have a more complex filling, but are distinguished by increased efficiency and solid efficiency. Compared with traditional models, the average increase in efficiency is approximately 10-12%.

The main drawback of any Vaillant double-circuit boiler is the price, which hits the buyer's pocket hard. But you have to pay for quality, there's no getting around it. But you will get at your disposal a balanced technique with a long service life.

An interesting feature of Vaillant double-circuit boilers is that the manufacturer does not spread its efforts on dozens and hundreds of models, stamping them one by one. On the contrary, Vaillant welcomes a meticulous approach to the creation and literally "licking" each new product created. The Vaillant boiler is a kind of iPhone in the world of heating technology.

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Types of manufactured boilers

Vailant produces gas and electrical equipment. Electric boilers are limited to one EloBLOCK model in several power options.

Gas appliances are represented by a more diverse assortment.

Among them:

• traditional (throw away part of the useful heat along with smoke);
• condensing (use additional energy of exhaust gases);
• single circuit VU;
• double-circuit VUW;
• atmospheric Atmo (uses air from the room for combustion, standard chimney for exhaust);
• turbocharged Turbo (allows you to arrange an underwater and outlet path through the wall);
• hinged;
• floor.

single circuit

Boilers with one circuit are designed to heat only the heat carrier of the heating system. For water treatment, you can connect an external boiler.

In double-circuit models, water is prepared separately for heating and for household needs.

wall

Mounted boilers are mounted with fasteners on the wall. Save space due to small dimensions. In the wall-mounted design, domestic installations of low and medium power are manufactured.

floor standing

Powerful domestic and industrial boilers are permanently installed on the floor. They have significant weight and dimensions. In some cases, they require a separate room - a boiler room.

Model overview

TurboTEC plus VU 122/5-5

The simplest single-circuit model of the Turbo line. Wall execution. With a closed combustion chamber, as it should be for tubed devices. Powers vary between 12-36 kW (in 4 kW increments). Simple maintenance - the owner of the equipment can handle it himself. True, for this he will need instructions - to familiarize himself with the device device and its maintenance options. Design Features Specifications:

• Efficiency - 91%
• Power consumption 145,000 W.
• Heats up to 120 sq.m.
• Weighs 34 kg.
• The cost is 45,000 rubles.
• Heating capacity (min / max) - 6 400/12 000 W.
• Auto ignition.
• Weight - 34 kg.

AtmoTEC plus VUW/5-5

Wall model for autonomous heating systems, Design similarity and technical characteristics:

• Two contours. Plate heat exchanger.
• Protective systems. Electronic ignition.
• Electronic control. Displaying information on the display.
• Heating capacity (min / max) - 9/24 kW. The manufacturer offers models for 28, 24 and 20 kW. Open firebox Gas outlet is natural.
• The cost is 63,000-73,000 rubles.
• Heat output - 9,000/24,000 W.
• Volatile.
• Auto ignition.

AtmoTEC pro VUW240/5-3

This range has been in production since 2020, so the latest technology and innovative ideas have been used here. Wall execution. Two contours. Natural chimney. Built-in harness. Electric ignition. Security systems. The primary heat exchanger is made of copper, for hot water supply - steel. Some specifications:

• Heating capacity and 24,000 W will be enough to heat a house up to 240 sq.m.
• The capacity of the DHW circuit is 11 l/min at a temperature of 30°C.
• Fuel consumption - 2.4 cubic meters / h.
• Weight 28 kg.

A complete analogue of the atmospheric boiler described above is turboTEC pro VUW240 / 5-3. This is a turbocharged version - combustion products are forced out.

EcoTEC pro VUW INT 286/5-3

EcoTEC pro series equipment is highly environmentally friendly. This is a wall-mounted 2-circuit condensing apparatus. The series is represented by capacities of 24.28, 34 kW. A high-performance DHW circuit is used. There is all the necessary piping - an expansion tank, a safety group, a circulation pump. Simple operation and simple operation are the hallmarks of condensing boilers. Sophisticated, knowledge-intensive technologies help to achieve this simplicity. Characteristics of VUW INT 286/5-3:

• 24 kW.
• Efficiency - 107%
• Weight 35 kg.
• The estimated price is 80,000 rubles.
• Turbocharged.
• Heats an area up to 192 sq.m.
• The limiting pressure in the heating / hot water circuit is 3/10 bar.

There is a display and backlit panel. Power adjustment - 28-100%. There is a summer mode of operation - only on hot water supply. All components are made in Germany. According to the manufacturer, such devices can save up to 25% of gas compared to convection-type counterparts.

EcoTEC plus VUW 246-346/5-5

Economical equipment with easy control. Fast water heating. Increased environmental friendliness - less concentration of harmful substances in emissions. Informative control unit - on the display, in addition to error codes, their decoding is also displayed. The EcoTEC plus series is represented by three capacities - 24, 30, 34 kW.

• Heating capacity 24 kW.
• Efficiency - 108%
• Weight 35 kg.
• Estimated price - 98 000 rubles.
• Turbocharged.
• Heats an area up to 192 sq.m.
• The limiting pressure in the heating / hot water circuit is 3/10 bar.

Such devices are suitable for heating any housing - houses or apartments. Do not need frequent maintenance.

Wall mounted gas boiler Navien Ace TURBO 13K

A high-quality wall-mounted double-circuit gas boiler designed for heating and supplying hot water to apartments and private houses with a small number of residents. The boiler has proven itself well in conditions of low pressure and insufficient quality power supply, which occur in many regions of Russia. The boiler has a power of 13 kW, while the efficiency is 92%, which indicates the high efficiency of the device, which is provided by a closed combustion chamber and a special design of the heat exchanger, which is made of stainless steel. The heat exchanger is not subject to corrosion and scale formation. The service life is more than 15 years.

The boiler has an outlet for combustion products, which are discharged into a coaxial chimney. Included is a remote control with a liquid crystal display, thanks to which you can control and adjust the temperature in the room. The heating temperature is regulated within 35-80 C, the hot water temperature is 35-55 C, while its flow rate is 12 liters per minute. The boiler consumes up to 150 W of electricity.

Advantages: high efficiency and reliability of the device. Safety of use. A convenient control panel that allows you to remotely control all the functions and parameters of the boiler. Low price.

Disadvantages: high price.

Reliability: 5

Economy: 5

Ease of use: 5

Security: 5

Price: 4

Total score: 4.8

Vaillant or Viessmann gas boilers - which is better?

Comparing boilers from different top companies is not a very productive occupation. Both firms produce solid and high-quality installations capable of performing their tasks in difficult conditions.

There is no significant difference between the products of these firms with equal parameters. Specialists do not undertake to unequivocally name any of these firms as the best. However, in the conditions of Russia, there are some inconsistencies in the service from Viessmann.

Too often, parts are missing, qualified technicians are not available, and warranty repair centers are located in remote communities. Vaillant products are also not perfect in this respect, but they are noticeably better.

Advantages and disadvantages

The advantages of double-circuit gas boilers Vaillant include:

• High build quality.
• Details of boilers of the TEC Pro and TEC Plus series are made of copper.
• The latest technological developments are used in production.
• Prestige.
• High economy.
• No noise during operation.
• Two patented thrust sensors are used.
• To connect to communications, their own adapters are used, which are attached to the boiler upon purchase.
• Long service life subject to periodic maintenance.
• The units were unanimously highly appreciated by specialists and ordinary users.

The disadvantages of the equipment should be considered:

• The cost of the boilers seems to be artificially high.
• The price of spare parts is too high.
• Installations are oversized.
• It is forbidden to fill in non-freezing liquid, which creates a risk of freezing of the system when the boiler is stopped during the cold season.
• Installation of a chimney from another manufacturer is not possible.

NOTE!
Most of the shortcomings are equally characteristic of boilers from other companies and can be considered a specific feature of the design.

Types of boilers Vailant

Gas condensing boiler Vaillant ecoTEC

Vaillant boilers have a large range of models. They are shared:

By installation method:

Wall boilers. They are light in weight and size, easy to use, because they do not require a separate room. Wall-mounted appliances have a classic discreet design, so they can easily fit into any interior.

Floor boilers. They are more powerful (16–57 kW), suitable for heating a house or a large room. The heat exchanger in them is made of cast iron, which ensures both the durability of the device, and the main drawback of the floor version is its heavy weight. The latest models of the series have two burners, one of which provides a constant temperature of the coolant, and the other allows you to change the heating temperature to higher numbers.

By the number of circuits:

• Single circuit (VU). They have one heat exchanger and serve only to provide heat. To get hot water, an additional boiler is connected to such a boiler.
• Dual circuit (VUW). They ensure the operation of the heating system and supply the coolant to the DHW circuit.

For the removal of combustion products:

Atmospheric type (AtmoTEC). This is a traditional version - with an open combustion chamber. Such boilers work on the principle of a conventional natural draft furnace. They are mounted only near the chimney and depend on the speed of air movement outside the building.Their huge advantage is energy independence.

Turbocharged type (TurboTEC). These are wall-mounted devices with a closed chamber. The products of combustion in them are discharged forcibly (coaxial chimney). They are volatile, but have a number of advantages: they are equipped with a fan, which allows you to adjust the heat output, mount the boiler on any wall of the house.

A special modification is EcoTEC condensing boilers. They use the heat of exhaust gas vapor, resulting in a 20% increase in efficiency.

General characteristics and principles of operation

To make a competent decision on the purchase of a certain standard size of such complex household appliances as a gas boiler, it is necessary to focus on the following principles.

1. Where will the equipment be installed? The Vaillant brand produces both floor-standing and wall-mounted units. The former are in great demand, because they do not require any special premises for their installation, are compact and are distinguished by great ease of use. At the same time, if there is a technical room in individual houses with a significant heated area (more than 300-400 m2), the installation of floor gas boilers is quite the best option.
2. How is it supposed to remove the flue gases generated during the operation of the unit. Where the arrangement of a special chimney can be carried out even at the stage of building a house, it is possible to install a Vaillant gas boiler according to the instructions with natural flue gas removal due to the difference in density.At the same time, in apartment buildings, it is more expedient to install turbocharged, closed boilers, the removal of combustion products from which is carried out forcibly, by means of a specially mounted fan.
3. Ensuring the greatest economy. Vaillant supplies a fundamentally new line of condensing type gas boilers, where the so-called modulating burners are used. A feature of these fuel-burning devices is that they are able to operate under conditions of a gas supply that varies over a wide range. At the same time, the final thermal power of the unit remains practically unchanged due to the presence of a plate heat exchanger. Such equipment is installed in low-temperature systems of individual heating.

Vaillant brand appeared a long time ago

The Vaillant company appeared in Remscheid back in 1874. Then no one thought that in the near future, almost all country houses would use autonomous hot water supply and heating. Because of this, the appearance of another sanitary ware factory went unnoticed.

Years have passed, and today Vaillant equipment is manufactured in many countries. There are more than 10 factories in Germany and in Europe, from where various models are supplied. At the same time, heating equipment, which is in great demand from compatriots, has become one of the main areas of development.

In Russia, for the first time, the Vaillant brand first introduced its own boilers in 1994. Then the first official representative office was founded, which proved how interesting the developments of professionals become.Now a full range is presented on the domestic market, so each owner of a country house selects the optimal model.

Device

Consider a standard Vaillant double-circuit boiler from the Pro series. This boiler has two heat exchangers. The first is intended for heating a residential building and is usually made of high quality copper. The second is designed to heat domestic water and is made of durable stainless steel. The components of this boiler include several elements.

A coaxial chimney with a diameter of 60/100 involves the use of two pipes of different diameters, which are inserted one into the other. Such a device provides both the removal of combustion products and the flow of air from the street. The boiler has an expansion tank with a volume of 10 liters, which is quite enough.

The kit also includes a circulation pump, which accelerates the coolant through the radiators, ensuring even distribution of heat throughout the house. Also, this pump has an automatic air vent.

The boiler has a gas burner, which has a flame modulation from 40% to 100%, and a metal hydroblock, which has a secondary heat exchanger.

About company

Vaillant is a brand of the well-known concern Vaillant Group. The history of the company began in 1874, when its founder, Johann Vaillant, began manufacturing sanitary ware. Today, the Vaillant Group is a large company that manufactures heating appliances, ventilation and air conditioning systems and occupies a leading position in the global market in this area. The company has branches in 20 countries, exports products around the world. There are also Vailant offices and service centers in Russia.

The concern is constantly working on the range of its products, has many developments in the field of renewable energy, considering this area to be one of the main ones in its activities in the future. However, the production of gas boilers is still in the first place and is a priority in the company's work.

Vaillant has several scientific laboratories that are engaged in the study and implementation of innovative technologies developed by the company's specialists. The Vaillant Group is currently building a large research and development center to build the instruments of the future.

The company produces energy-saving heating systems and gas equipment. Vaillant's main strategy is to follow the principles of an environmentally friendly lifestyle. All gas boilers of this company are made taking into account advanced eco-technologies. The devices have a very low level of noise and CO2 emissions into the atmosphere, and save resources. Vaillant boilers use the energy received with maximum efficiency, provide high efficiency of the heating and hot water systems.

What are the malfunctions in the operation of Vailant boilers?

Despite the excellent quality and reliability of gas boilers from the German manufacturer Vaillant, breakdowns still occur. For example, on a Vaillant gas boiler, malfunctions may be due to the fact that the device does not heat water. The likely cause of this situation may be clogging of pipes, filters and assemblies. Poor water quality leads to scale formation. So that the heat exchangers do not clog, it is necessary to additionally install softening filters.

Sometimes there is such a problem as incomplete removal of exhaust gases into the atmosphere. You can fix the situation by installing a pump. In addition, it is necessary to periodically clean the burner - at least once a year. Some users also complain about NTC sensor malfunctions, cable damage due to various defects. Sometimes you have to meet with the problem of too noisy operation of the device. Experts see the cause of this malfunction in the non-optimal design of the fan.

Summing up, it can be noted that during the operation of the boilers of the German manufacturer Vailant, malfunctions sometimes occur. But reliability, high quality and a number of other advantages lead to the fact that many users decide to buy a Vaillant gas wall-mounted boiler, who in the future do not regret their purchase at all.

Boiler models

Vaillant heaters are available in various designs. Models of different price range are presented. They differ in power, type of burner, smoke exhaust, the presence or absence of additional useful functions.

Marking:

• VU - one circuit;
• VUW - two circuits;
• AtmoTEC - atmospheric type;
• TurboTEC - turbocharged type;
• Int - international execution;
• ECO - these are boilers that are particularly environmentally friendly;
• Pro - a budget-level version;
• Plus - equipped with a quick start function;
• ATMOGUARD” is a security system, which is equipped with the latest models (has two temperature sensors).

Marking on the example of Vaillant turboTECplus VUW INT 242 / 5-5 indicates: turboTEC - series name, Plus - premium product, VUW - two circuits, INT - international version, 24 - power, 2 - closed chamber, / 5 - generation, - 5 - plus series.

AtmoTec and TurboTec wall-mounted boilers, Turbo fit pro and plus series (12–36 kW)

Presented in the pro (simplified version) and plus series. Are issued with 1 — 2 contours. There is an internal expansion tank, adjustable bypass, safety valve, automatic air vent. Power modulation from 34 to 100%. The heat exchanger is copper, the burner is steel chromium-nickel. There is an automatic pressure control.

The boilers are equipped with a diverter valve, eBus (except TurboFit), DIA diagnostic system. There is protection against pump jamming and low temperatures, electronic ignition.

Boilers with 2 circuits have an instantaneous water heater, LCD display (not available in the pro series). An external water heater with built-in control can be connected to single-circuit ones. Plus models have the function of maintaining a constant temperature of the coolant and a "hot start", there is a circulation pump with the ability to switch stages.

Floor standing boilers atmoVIT, atmoVIT vk classic, atmoCRAFT vk (15-160 kW)

These are boilers with natural removal of combustion products. They can operate on natural and liquefied gas. They have an efficiency of 92–94%, 1–2 burner power levels, a cast-iron heat exchanger, a boiler temperature sensor, an electric ignition function, flame control, an STB temperature limiter, a weather-dependent calorMATIC (VRC) controller, and low temperature protection. Equipped with DIA-system. Heating of the heat carrier is carried out by means of an external water heater. Boilers have low emissions.

Condensing boilers EcoTEC pro and plus series (16–120 kW)

Wall-mounted gas condensing double-circuit boiler ecoTEC pro

Models with 1-2 circuits are presented. They use the latent heat in the boiler by condensing water vapor in the flue gas.They have an efficiency of 98-100%. The burner is closed. Power control range 20-100%. The AquaPowerPlus function allows you to increase productivity by 21% when heating water. The AquaCondens system uses the condensation function when DHW is switched on.

The water trough and condensate manifold prevent liquid from accumulating in the system and penetrating into the device, which provides reliable protection against corrosion. Ventilation works in every mode. Measurement of the circulation water flow is provided in the device circuit, which ensures the protection of the primary heat exchanger from the effects of hot liquid.

A circulation pump with an automatic stage switch, an internal expansion tank, an automatic air vent, a safety valve and a siphon that drains condensate are not available only in VU models with a power of 48 kW or more, but they have a flow sensor and a place for a multiMATIC controller. EcoTEC VUW models do not have electronic ignition and pump anti-jamming protection.

Floor standing condensing boilers ecoCOMPACT vsk, ecoVIT vkk (20-280 kW)

ecoCOMPACT gas boilers with built-in boiler

The efficiency of these devices is much higher - up to 109%. They are equipped with LCD display, pressure control, permanent low temperature protection. Water heating is possible in the ecoVIT series using an external device. The ecoCOMPACT series is equipped with an expansion tank for the heating system. VSC series - with stratified heating water heater.

Prices: summary table

Model	power, kWt	Efficiency, %	Gas consumption, m³/hour	DHW capacity, l/min	price, rub.
atmoTEC pro VUW 240/5-3	24	91	2,8	11,4	53 000—59 000
atmoTEC plus VUW 240/5-5	24	91	2,9	11,5	65 000—70 000
turboTEC pro VUW 242/5-3	25	91	2,9	11,5	57 000—62 000
turboTEC plus VUW INT 242/5-5	25	91	2,9	11,5	69 000—73 000
ecoTEC plus VU INT IV 346/5-5	34	107	3,7	—	105 000—112 000
atmoVIT VK INT 254/1-5	25	92	2,9	—	97 000—103 000
ecoCOMPACT VSC INT 266/4-5 150	25	104	3,24	12,3	190 000—215 000

Vaillant boilers are considered the benchmark for heating equipment. Indeed, for many years they continue to be leaders in their field. If you are looking for a reliable and comfortable boiler, then Vaillant is perfect for you.