Heating wall-mounted gas boiler Buderus: device, types (single-circuit and double-circuit), as well as models and reviews

European companies are considered recognized leaders among manufacturers of heating equipment.

They own all the most advanced developments and conceptual solutions in this area.

One of the leaders is] Buderus[/anchor], which will soon turn 300 years old.

Today it is part of the Bosch Thermotechnik GmbH holding, which significantly strengthens its position among its competitors.

Let's consider one of the company's activities - wall-mounted gas boilers.

Wall-mounted gas boilers Buderus

Buderus products are manufactured in several European countries. In Russia there is a plant in Engels, where, among other heating equipment, wall-mounted gas boilers are produced.

This makes it possible to produce installations that are fully adapted to the technological and climatic operating conditions in Russia, and it also becomes possible to reduce the cost of boilers for the end user.

The production uses advanced technical and design developments to ensure stability, durability and efficiency of components and parts. The main emphasis is on maximum automation of work, as well as ease of control and maintenance of the units.

A revolutionary system for optimizing boiler operation is used, taking into account external factors - additional heat sources, climatic conditions, etc.). It is possible to remotely control the operation of the system using a special application on a smartphone.

How to identify a malfunction

Despite the use of advanced technologies, sometimes problems occur. They are detected by sensors and self-diagnosis.

If a malfunction is detected, the system will display the corresponding code.

How to recognize the malfunction yourself:

• What if the burner doesn't light? First, you should check whether the heating or control system starters are turned on. But it is possible that the circuit breakers of the protection system have failed, or that the regulators or temperature limiters of the equipment have broken down. It is possible that the gas smoke control equipment has failed;
• If the burner is on, but an error code appears? As a rule, the problem is a closed valve or the presence of air in the gas pipeline. To neutralize, it is necessary to open the valve to allow air to escape;
• The burner lights up, but there is a signal of no ionization current? It is worth checking the condition of the contacts, sometimes they oxidize. But it is not uncommon for the connection of electrodes of type N and L to be mixed up. Although it is possible that the electrode may short-circuit to the boiler body. If everything is checked, but the reason is not clear, we can only assume a breakdown of the burner automation;
• The burner is on, but the display shows an error of 1.5 mA? Perhaps the reason is the appearance of soot on the electrode or the oxidation process. Therefore, it is worth cleaning the electrode;
• If there is a boiling process in the heat exchanger? Most likely, a large layer of scale has formed or there has been a critical decrease in the amount of coolant in the system.

Now we have realized the features of Buderus boilers and identified the reason for their popularity in Russia - the quality of German assembly and reasonable cost.

We understood the intricacies of installation and the causes of popular problems. This will help you responsibly select the appropriate model and subsequently operate it effectively.

Types

There are different modifications of Buderus wall-mounted boilers.

By number of circuits:

• Single-circuit. They only provide heating of the coolant for the heating circuit.
• Dual-circuit. At the same time, they are capable of preparing domestic hot water and heating the coolant for the heating system.

By type of combustion chamber:

• Atmospheric (open) . The air required for the combustion process is taken directly from the room in which the boiler is installed. Removal of smoke and other combustion products occurs using natural stove-type draft.
• Turbocharged (closed) . The air is taken from outside and enters the boiler through the external pipe of the coaxial chimney. For this purpose, a turbocharging fan is used, which simultaneously ensures smoke removal.

For residential premises, it is more convenient to use turbocharged models, since natural draft is unstable and can be directed in the opposite direction by a strong gust of wind or a draft in the room.

By type of thermal energy transfer:

• Convection . A traditional scheme for heating the coolant in a burner flame without additional procedures was used.
• Condensation . A technique that appeared relatively recently. The liquid is preheated using thermal energy obtained by condensing water vapor from the exhaust smoke. The prepared coolant does not require intensive heating, which reduces gas consumption and softens the operating mode of the heating pad and heat exchanger. In total, this gives high efficiency (up to 108%, although this method of calculation is not correct and is a common marketing ploy), gas savings and an increase in the service life of the heat exchanger.

IMPORTANT!

Condensing models are able to fully operate only on low-temperature systems. If operating conditions do not allow the use of such modes, purchasing a condensing boiler will become impractical.

Types of Buderus boilers

To simplify classification, the entire product line can be divided by installation methods and design

According to the installation method, all Buderus boilers are divided:

1. wall;
2. floor

According to the design, individual features are distinguished:

• one or two contour;
• open or closed firebox;
• natural or forced traction;
• cast iron or steel heat exchanger;
• forced or atmospheric burner.

Condensation

Boilers of this type are innovative in the field of heating technology; they have higher efficiency compared to conventional heaters.

This is achieved through the use of thermal energy, which previously simply “went down the drain” with combustion products.

The operating principle of these modifications is based on the use of heat released during combustion, part of which goes into the atmosphere, to heat the coolant supplied to the boiler furnace.

Wall mounted

These versions are most often used for autonomous heating of apartments, as well as small cottages.

Their popularity is explained by their compact dimensions and the ability to install in limited spaces..

Single-circuit

The simplest, most compact and economical low-cost models.

The burner of such boilers can operate both in room heating mode and in economy mode, maintaining the specified minimum coolant temperature.

Dual-circuit

The main advantage of such models is the ability to independently heat the coolant and water in instantaneous water heater mode.

In the summer, when space heating is not required, the boiler can operate as a simple gas water heater.

Floor-standing

The power of such devices is greater than that of wall-mounted analogues, usually ranging from 50 to 100 kW.

These versions are used for heating residential buildings, as well as various premises and non-residential buildings.

Such boilers can have atmospheric or forced-air burners; they often use cast iron heat exchangers rather than steel ones.

Advantages and disadvantages

The advantages of Buderus wall-mounted boilers are:

• High build quality, reliability of units and parts of the unit.
• Easy to control, convenient display with intuitive symbols for operating mode adjustment controls.
• Possibility of remote control of the system from anywhere in the world.
• Compact, able to fit into the interior of a small kitchen.
• Relatively low cost compared to similar models from other companies.

There are also disadvantages:

• Boilers are energy dependent, require stable voltage, need to install stabilizers.
• Some parts are made entirely of plastic, which makes them short-lived under harsh operating conditions.

NOTE!

The disadvantages of Buderus boilers are not decisive and are completely offset by the undoubted advantages that all models have.

How to make the right choice

How to make the right choice

It is important to know that the power of the equipment is calculated based on the total area of ​​the heated room. Thus, 1 kW of power is required for normal heating of 10 m2 with a ceiling height of up to 3 meters.

For example, if a house has an area of ​​up to 270 m2, then a Buderus 24 kW gas boiler may be an excellent option.

If the choice is made on floor-type equipment, in which combustion products are removed naturally, then you will need to allocate a separate room for installing the device, which must be equipped with good ventilation and have a separate exit.

The Buderus wall-mounted gas boiler has small external dimensions, which allows it to be installed directly in the house, for example in the hallway or in the kitchen.

Note that today we offer equipment that does not require the construction of a chimney for installation. In such boilers, combustion products are discharged through a coaxial chimney. The main advantages of wall-mounted equipment are as follows:

• the oxygen required for the combustion of the flame is not taken from the room;
• there is no structural element on the facade and roof through which combustion products are discharged;
• There is no need to build a chimney, which allows you to save some money on installation work.

The coaxial chimney comes out of the wall directly at the installation site of the device. From the outside of the building, it remains almost unnoticeable, which allows you to preserve the attractiveness and beauty of the building facade.

Before you begin installing a gas heating boiler, regardless of its type, you must contact special services and obtain permission to install and connect gas equipment.

What is important to know when choosing condensing gas boilers

Buderus Logamax plus GB112-60

• Buderus Logamax plus GB112-60;
• Buderus Logamax plus GB112-43;
• Buderus Logamax plus GB112-29.

What are the features of the offered equipment? So, if during operation of an old heating device a certain percentage of energy is removed along with combustion products through the chimney to the outside, then this does not happen in condensation-type devices.

The equipment is designed in such a way that the existing heat in the flue gases is redirected back into the heating system through specially designated channels. Thanks to this operating scheme, not only the productivity of the unit increases, but also the efficiency of operating the unit.

The operation of the device is based on a built-in special heat exchanger of an extended type, which collects condensate released during fuel combustion, which has a very high temperature. As a result of contact with the heat exchanger, it transfers its heat to the coolant that fills the heating system.

The introduction of this technology and properly developed technological aspects made it possible to significantly increase the efficiency of equipment and reduce emissions into the atmosphere. Note that the efficiency of condensing boilers exceeds that of traditional devices by almost 15 percent.

Advantages of condensing type equipment:

• high performance;
• efficiency;
• environmental friendliness.

What series and models are wall mounted?

Buderus wall-mounted boilers are represented by one large Logamax line, which consists of 4 series:

• Buderus Logamax U042/U044 . Double-circuit installations with a power of 24 kW. Equipped with a bithermic heat exchanger, which allows you to simultaneously heat both the coolant and hot water. There are models with a closed (042) and open combustion chamber (044).
• U052 / U054 K. Single- and double-circuit boilers with an open (054) and closed (052) combustion chamber. For dual-circuit models, the designation contains the letter “K” (combined). Two models are available with a power of 24 and 28 kW.
• U052 T / U054 T . Model with a power of 24 kW, with an open or closed combustion chamber. A special feature is the presence of a 48-liter hot water storage tank, which allows you to meet high demands for hot water.
• U072 . The most popular series of turbocharged boilers with a capacity of 12, , and kW. Single and double circuit models are available. High demand is due to the relatively low cost of boilers. Equipped with two heat exchangers - primary (for coolant) and secondary (for hot water supply). The most popular boilers are 24 and 35 kW, producing up to 12 and 16 liters of hot water per minute, respectively. Capable of heating 240 and 350 m2 of residential, public or commercial areas.

When choosing a boiler, you should compare its characteristics with the size of the room and the family’s need for hot water. The manufacturer provides a choice for any conditions, which allows you to get the best option.

The best floor-standing boilers Buderus

Lemax Premium-30N

Non-volatile boiler with mechanical control and steel heat exchanger with a capacity of 30 kW, running only on natural gas.

Capable of heating a room up to 300 square meters. meters.

Technical specifications:

• Efficiency is about 90%;
• consumes 3.5 cubic meters/hour when burning natural gas;
• maximum temperature in the heating system 90 °C;
• maximum water pressure in the heating system 3 mbar;
• The optimal natural gas pressure is 13 mbar.

pros

• open combustion chamber;
• Large areas can be heated.

Minuses

• no cast iron heat exchanger;
• does not run on liquefied gas;
• no electronic control system.

Lemax Leader-35

Non-volatile boiler with mechanical control and cast iron heat exchanger with a capacity of 35 kW, running only on natural gas.

Capable of heating a room up to 350 square meters. meters.

The parameters are slightly different:

• Efficiency is about 90%;
• consumes 4 cubic meters/hour when burning natural gas;
• maximum temperature in the heating system 95 °C;
• maximum water pressure in the heating system 4 mbar;
• The optimal natural gas pressure is 13 mbar.

pros

• There is a cast iron heat exchanger.

Minuses

• no electronic control system.

Lemax Wise 25

Boiler with electronic control and cast iron heat exchanger with a power of 25 kW,

operating on both natural and liquefied gas.

Options:

• Efficiency is about 90%;
• consumes 1.5 cubic meters/hour when burning natural gas;
• maximum temperature in the heating system 90 °C;
• maximum water pressure in the heating system 4 mbar;
• The optimal natural gas pressure is from 6 to 25 mbar.

pros

• electronic control;
• cast iron heat exchanger.

Minuses

• No

Specifications

Let's look at the technical characteristics of Buderus wall-mounted boilers:

Summarize

Floor-standing versions of the appliances, as well as gas wall-mounted double-circuit heating boilers Buderus models, are economical, reliable and durable in operation. The company offers a huge range of models that differ in functionality, installation method, power, which allows you to choose the best option for installation in a specific heating system.

Having bought a German double-circuit wall-mounted gas boiler Buderus or any floor-standing unit, immediately after the start of operation you will understand that the choice was made correctly!

Device

The main components of Buderus wall-mounted boilers are:

• Gas-burner.
• Heat exchanger (bithermal or conventional type).
• Turbocharger fan.
• Circulation pump with automatic air removal.
• Secondary plate heat exchanger made of stainless steel.
• Three way valve.
• Control equipment for pump and fan operation.
• Control board with sensor system.
• Connecting pipelines, connecting pipes.

The coolant enters the primary heat exchanger, where it is heated to the maximum possible value.

Then it goes to the secondary heat exchanger, where excess heat is transferred to prepare hot water.

After this, in a three-way valve (mixing unit), it receives the set temperature by mixing a certain amount of colder return flow, after which it exits into the heating circuit.

All work is controlled by a system of sensors that send signals to the control board. The occurrence of problems is immediately detected, the owner is notified by displaying an error , and in difficult cases the boiler operation is blocked .

Features of a double-circuit boiler

The manufacturer also offers package offers - a boiler and a single-circuit boiler.
In addition to the function of heating the room, the boiler can provide the house with hot water. Devices with two circuits are:

• Flow-through. Water heating is carried out in flow mode. The device is small in size, and the water is heated immediately after opening the tap.
• Cumulative. The boiler is equipped with a boiler in which water is heated. This is an economical option with more massive equipment.

The most famous devices with two circuits include Legomax u972 183a. This mini-boiler room is efficient and safe due to built-in sensors. Automation is responsible for temperature regulation. There is a filter for incoming water.

Operating and setting instructions

Operating Buderus boilers is not particularly difficult. All functions of the unit are simple, their adjustment is not difficult and is done using the corresponding buttons on the control panel.

The user does not perform any actions with the boiler, except for filling or draining the system.

A suitable tap or drain valve is used for filling. It must be remembered that adding cold water to a hot boiler is prohibited, otherwise the heat exchanger can be destroyed. After a long period of inactivity, it is necessary to carry out thermal disinfection.

The transition to summer or winter occurs at the user's request by changing and saving the mode on the control panel.

Installation and configuration of Buderus boilers must be carried out only by certified specialists from the service center, otherwise the warranty agreement will be considered terminated at the initiative of the owner.

Download instructions

Download instructions for Buderus wall-mounted gas boilers.

Selecting a boiler by power

Comparative characteristics of the power of Buderus boiler models
Buderus long-burning boilers are available in a wide range of capacities. Based on this indicator, you can choose the optimal device for heating any area. When choosing, the following factors are taken into account:

• The area of ​​the heated room. The larger it is, the more powerful the unit will be required.
• Features of the walls. Thickness, material, presence of thermal insulation.
• Insulation of the house. If the room is well insulated, less energy will be required for heating.
• Climatic features. These include the average annual temperature, the duration of the cold season, and humidity.
• Number of windows, their size and type.
• Availability of ventilation.
• Additional functionality. A device that will heat water or food will require more power.

To simplify the choice of power, the norms are calculated for 1 sq.m. for different regions. For the middle zone, it is optimal to use 100 W per 1 sq.m., for Siberia 150 W/sq.m., for the Arctic 200 W/sq.m.

Price range

The price range for Buderus wall-mounted boilers is approximately 30-60 thousand rubles.

For top-level equipment, this slightly and significantly increases demand and relevance among users.

When planning a purchase, you need to check with your regional representative about the cost of the units and find out the amount of additional costs (warranty agreement, cost of additional equipment, etc.).

IMPORTANT!

An attempt to save money on concluding a warranty agreement will result in even greater costs for repairs or maintenance of the boiler.

How to connect the boiler?

For piping, only branded components and equipment compatible with Buderus heaters are used. To facilitate the connection of the BKN - indirect heating boiler, single-circuit versions have valves. Supply and return are connected in accordance with the connection diagram specified in the operating instructions. You can connect containers with a volume of 60, 80, 100 and 120 l. Moreover, this can be done even in winter - there is no need to turn off the heating to connect the BKN.

What should the room be like?

Regardless of what brand of equipment is installed and who its manufacturer is, the same requirements are imposed on the premises:

• Natural ventilation is needed.
• Minimum height – 2.2 m.
• Area – from 12 m²
• The doors should not have a threshold. The gap between the door leaf and the floor surface is 1-2 cm.

For turbocharged versions, a reduction in area to 8 m² is allowed.

How much does a Buderus boiler cost?

The price of German gas heating equipment was significantly reduced due to the location of production facilities in Russia. For example, the Logamax U072K wall-mounted device today costs between 30-35,000 rubles. Floor-standing model Logano G124 WS RU - about 70,000 rubles. Such prices and brand recognition predetermined the popularity of Buderus products among Russian consumers.

Advantages and disadvantages

The advantages of Buderus wall-mounted gas boilers include:

…

• low noise;
• European quality;
• relatively low cost;
• inexpensive spare parts.

The disadvantages of this equipment are:

• small number of service points;
• non-original components.

Note! Before buying a Buderus gas boiler, you should find out whether there are service centers of this company in your locality.
As additional devices, you can purchase a remote control element, thermostats and other equipment. To most boilers you can connect sensors that respond to weather changes.

Standard service life of models from well-known manufacturers

The standard service life (declared by the manufacturer in the model documentation) is calculated from the date of commissioning, i.e. from the date of installation and first start-up, not the production of heating equipment. For most of their models (with regular maintenance), well-known manufacturers predict the following service life:

1. AOGV – 10 years.
2. Ariston - 8-10 years old.
3. Baksi – 12-15 years old.
4. Bosch – 12 years old.
5. Vaillant – 10-15 years.
6. Wissman – 15-20 years old.
7. Lemax – 11-14 years old.
8. Navien – 10 years old.
9. Proterm – 10-12 years.
10. Rinnai – 10-12 years old.