Gas heating boilers BOSCH or BAXI - which is better to choose

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

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 competitors.

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 conditions of work in Russia, and it also becomes possible to reduce the cost of boilers for the end user..

In production, advanced technical and design developments have been used to ensure stability of operation, durability and efficiency of units and parts. The main emphasis is placed on maximum automation of work, as well as on simplicity of control and maintenance of the units.

A revolutionary system for optimizing the operation of the boiler 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 in a smartphone.

Model reviews

After reading reviews about the Buderus gas boiler, you will be able to understand that it provides convenient control, stability under pressure drops and can heat large areas. All this is very popular with consumers, as well as the presence of a simulated fan, as well as electronic ignition.

The boiler is multifunctional, it can be used for heating water and heating. Flame control in the device is provided by an ionization electrode. The boiler makes noise during operation, but at a low level. It is adapted to Russian conditions, which is very much liked by the modern consumer who appreciates quality goods at an affordable cost.

Types

There are different modifications of Buderus wall-mounted boilers.

By the number of contours:

• Single-circuit. Provide only heating of the heating agent for the heating circuit.
• Double-circuit. At the same time, they are capable of preparing hot water supply 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 where the boiler is installed. The removal of smoke and other combustion products is carried out using the natural draft of the furnace type.
• Turbocharged (closed)... The air is taken from outside and enters the boiler through the external pipe of the coaxial chimney. For this, a turbocharger fan is used, which at the same time ensures the removal of smoke.

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

By the type of heat transfer:

• Convection... The traditional scheme of heating the coolant in the burner flame was used without additional procedures.
• Condensing... A technique that has appeared relatively recently. Preheating of the liquid is applied using thermal energy obtained by condensing water vapor from the exhaust smoke.The prepared heat carrier does not require intensive heating, which allows reducing gas consumption and softening the operating mode of the heater and heat exchanger. In total, this gives a 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 life of the heat exchanger.

IMPORTANT!

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

Advantages and disadvantages

The advantages of Buderus wall-mounted boilers are:

• High build quality, reliability of units and parts of the unit.
• Easy to operate, user-friendly display with intuitive designations of operating mode controls.
• The ability to remotely control the operation of the system from anywhere in the world.
• Compactness, the ability to integrate into the interior of a small kitchen.
• Relatively low cost compared to similar models from other firms.

There are also disadvantages:

• The volatility of boilers, the requirement for a stable voltage, the need to install stabilizers.
• Some parts are completely made of plastic, which makes them short-lived in difficult working conditions.

NOTE!

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

Which series and models belong to the wall

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

• Buderus Logamax U042 / U044... Double-circuit plants with a capacity of 24 kW. Equipped with a bithermal heat exchanger, which allows you to simultaneously heat both the coolant and hot water. There are models with a closed (042) and an open combustion chamber (044).
• U052 / U054 K... Single and double-circuit boilers with open (054) and closed (052) combustion chambers. For double-circuit models, the designation contains the letter "K" (combined). Available in two models, 24 and 28 kW.
• U052 T / U054 T... 24 kW model with open or closed combustion chamber. A special feature is the presence of a storage tank for hot water supply of 48 liters, which makes it possible to meet high needs for hot water.
• U072 ... The most popular series of turbocharged boilers with a capacity of 12,, and kW. Available in single and dual circuit models. The high demand is due to the relatively low cost of boilers. Equipped with two heat exchangers - primary (for the heating agent) and secondary (for hot water supply). The most popular are boilers with a capacity of 24 and 35 kW, producing up to 12 and 16 liters of hot water per minute, respectively. They are capable of heating 240 and 350 m2 of residential, public or commercial space.

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

Bosch Gaz 6000 W WBN 6000-24 С

Specifications:

• type - wall-mounted, double-circuit;
• the boiler is equipped with a closed combustion chamber;
• an expansion tank with a volume of 8 liters is installed in it;
• hot water productivity - 13.7 l / min;
• useful power range - 7.2-24 kW;
• heating system temperature - from 40 to 82 ° C;
• boiler dimensions (H / W / D) 700/400/299 mm;
• the unit weighs 34 kg;
• consumption of natural gas - 2.1 m³ / h, and liquefied gas - 1.5 kg / h;
• maximum allowable inlet pressure - 10.5-16 mbar;
• two heat exchangers: copper and steel;
• The efficiency is 93.2%.

Model Description

With a small compact size, the boiler has many necessary and useful functions. It features an LCD display with a large backlit screen and push-button control. The screen displays data on the system operation.The device is endowed with the function of automatic parameter setting, equipment self-diagnosis and alarm.

To control the safety of operation, the boiler has sensors for water temperature, pressure, flow with a coarse filter.

It is equipped with a pressure gauge, a three-speed circulation pump, an overheating protection system, an automatic air vent and a safety valve.

Advantages and disadvantages

Easy to operate, compact, no noise during operation, high performance, stable operation under pressure drops, good heat dissipation.

The disadvantages include the sensitivity of the heat exchanger to hard water (scale, deposits).

Installation and instructions

The boiler is connected only to closed DHW and heating systems, all other installations are considered not to be used for their intended purpose.

To maintain the warranty, you must follow some guidelines:

• installation of equipment is carried out in full accordance with the requirements of the project and the manufacturer;
• installation, adjustment and startup of the boiler must be carried out by employees of the service center with a license to permit the provision of such services;
• repair, alteration of equipment is entrusted only to a specialized organization;
• all replaced and installed spare parts must be original;
• the inscriptions on the boiler body remain intact throughout the entire period of operation.

Prices for boilers Bosch Gaz 6000 W WBN 6000-24 С

At a cost in specialized stores, heaters of this model do not have a cardinal difference. They can be purchased at prices ranging from 28,900 to 30,200 rubles.

Specifications

Consider the technical characteristics of Buderus wall-mounted boilers:

Buderus Logamax U072-24K

Specifications:

• wall-mounted boiler, double-circuit;
• equipped with a closed combustion chamber;
• expansion tank - 8 l;
• power - 8-24 kW;
• hot water output is 13.6 l / min;
• water heating is possible in the range from 40 to 82 ° С;
• overall dimensions (H / W / D) - 700/400/300 mm;
• weight is 36 kg;
• natural gas consumption - 2.8 m³ / h, liquefied gas - 2 kg / h;
• working pressure - 3 bars;
• primary heat exchanger from copper, secondary from stainless steel;
• The efficiency is 92%.

Description of the device

Small, original, stylish model with LCD display and backlight on the center panel. The device is equipped with the functions necessary for the control and safe operation of the device.

Built-in sensors for control of flame, pressure, temperature, water flow. A cold water filter and a pressure gauge are installed at the inlet.

The device is equipped with a three-speed circular pump, a three-way valve, an auto-air vent, a safety valve, and a water drain cock.

The device has a built-in function of self-diagnosis and automatic adjustment of the operating parameters of the system, it is possible to connect an alarm sensor.

Advantages and disadvantages

Excellent design, efficiency, high heat transfer, quiet operation, high-quality assembly, not afraid of low pressure, antifreeze can be used instead of water. Two separate heat exchangers allow the unit to be used in areas with hard water.

No flaws were found, which affected the cost - it is quite high.

Installation and instructions

The boiler is designed for connection to closed systems with forced water circulation. It is installed in houses of various storeys with centralized chimneys and an area of ​​up to 250 m².

After the delivery of the equipment, you must:

• check the integrity of the case, the presence of an operation manual and a warranty card;
• make sure from the information on the package that they brought exactly the device ordered and configured for this type of gas;
• clean the boiler from deposits and dirt with a neutral detergent;
• invite a certified specialist for installation and commissioning of the boiler.

In case of malfunctions or failure of the heater, you need to contact a special center, and not try to repair the boiler yourself, otherwise you may lose the warranty.

Device

The main units of Buderus wall-mounted boilers are:

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

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

Then it enters the secondary heat exchanger, where excess heat is transferred to the preparation of hot water.

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

All work is monitored by a system of sensors that send signals to the control board. The occurrence of malfunctions is immediately detected, the owner is notified by displaying a code on the display mistakes, and in difficult cases, the boiler operation is blocked.

Operation and setup instructions

The operation of Buderus boilers is not very difficult. All functions of the unit are simple, their adjustment is not difficult and is carried out 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 long periods of inactivity, thermal disinfection must be carried out.

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

Installation and adjustment of Buderus boilers should 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 instruction

Download instructions for Buderus wall-mounted gas boilers.

Consumer reviews

As for the additional benefits, among them consumers distinguish:

• boiler resistance to pressure drops;
• adaptation to Russian conditions;
• presence of flame control;
• the presence of a simulated fan;
• electronic ignition;
• frost protection;
• unpretentiousness to voltage drops.

Consumers love the LCD display and control panel. With their help, you can turn on, turn off and monitor the operating status of the device. The display also helps to regulate the temperature.

Price range

The price range for Buderus wall-mounted boilers is in the conventional range of 30-60 thousand rubles.

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

When planning a purchase, you need to check with your regional representative 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.