Bosch boilers: product types and possible problems

Many people in our country sooner or later think about purchasing an autonomous heating system. The essence of the choice is in the ratio of price and quality. In the Russian market there are many boilers from famous brands. One of the brightest representatives is the Bosch equipment.

Bosch is a German brand that has existed for over 100 years. During this time, he became popular throughout the civilized world. Products under this brand today can be found in 150 countries. For many years, the company engaged in the production of automotive parts. Later in the list of its products included household appliances. It is through their production that Bosch has become famous in Russia.

In recent years, the demand for heating boilers is only growing.They are equipped with most modern apartments and private houses. Many Russian buyers among the preferred brands distinguish Bosch, because the German boilers are compact and efficient. On sale there are many models with different parameters. And almost all of them are adapted to the living conditions in Russia.

Bosch boilers have a long series of advantages that have made them so popular.

The list of pluses is compiled from positive feedback from satisfied owners

• Bosch boilers are of high quality build, made with all responsibility. Hence the minimum number of breakdowns. According to statistics provided by service centers, Bosch boilers break down 2-3 times less frequently than equipment from other manufacturers.
• Bosch units boast high performance with low energy consumption. Profitability, as a rule, is one of the main selection criteria for the Russian buyer.
• The wide model range allows to satisfy any requirements, and also to adapt a copper under different conditions. For example,You can combine several identical units and heat rooms with a large area.
• Pleasant appearance is a great bonus to the above benefits. The strict design will perfectly fit into any interior.

Unfortunately, there are also some drawbacks, which, according to the owners, are not so significant.

• Price is always the primary factor when choosing equipment. The cost of Bosch boilers is somewhat higher when compared with the equipment of lesser-known brands. However, it does not differ from the prices set by other large firms. Most customers consider this price to be adequate and due to the quality of products.
• Not all Bosch boilers boast a German assembly. Many of them are produced in other countries, including Russia (the city of Engels). The quality of the technique mentioned above suffers from this.
• The disadvantage is the fact that far from the entire model range is represented in Russian stores. Because of this, buying the most suitable boiler becomes more difficult. In this case, various Internet services with delivery service come to the rescue.

Heating boilers can be divided into many groups depending on the selected criteria.

Bosch offers the following types of boilers:

• gas;
• electrical;
• solid fuel;
• liquid fuel.

At first it is necessary to consider gas boilers, which are divided into several subspecies.

The single-circuit boiler is a simple equipment for space heating. It consists of one heat exchanger and built-in strapping, which includes a circular pump and expansion tank. Simplicity of design ensures maximum reliability of the unit. However, single-circuit boilers are not able to heat water. This implies the need to purchase additional equipment.

This type includes many models, among which it is worth considering the most popular.

• One of the most popular models is Bosch Gaz 6000 W. At the heart of its work is a modulated burner and a copper heat exchanger. Electronic modulation allows you to adjust the power of heat. This model has an information display, electronic control, self-diagnosis system, built-in security group, anti-freezing mode.The boiler has such characteristics as: weight –28 kilograms, power - 12–18 kW. This is enough to warm the premises with a total area of ​​200 square meters.

• If you need more powerful equipment for heating, you should pay attention to the model Bosch Gaz 4000 W, which also belongs to the group of single-circuit boilers. It is characterized by a power of 24 kW and the presence of an integrated gas filter. Also, this boiler is equipped with an 8-liter expansion tank and a circular pump.

Two-circuit boilers perform two tasks at once - space heating and water heating. At the same time, their sizes almost do not differ from single-circuit counterparts. The differences are only in the internal filling. Dual-circuit boilers have two heat exchangers. The water in the hot water circuit is heated by water from the heating circuit circulating through the heat exchanger. Double-circuit boilers can be bithermic. They work on the same principle, but the second heat exchanger is located inside the first. Experts note that models with such a structure are not very reliable.

As an example, the model Bosch Gaz 7000 W.Experts describe it as a simple and reliable boiler. It has a closed combustion chamber and a power of 28.1 kW. The unit boasts a flame modulation system, advanced and affordable electronic controls, overheat protection, a security group and a self-diagnostic system. The same type can be attributed to the cheaper model Bosch Gaz 2000 W. It is able to heat an area of ​​240 square meters, it works stably with pressure drops of water and gas, has a modulated fan and low noise level.

Boilers with an open combustion chamber need a natural flow of air. He gets out of the room, which must be equipped with good ventilation and a chimney with a chimney, through the latter the products of combustion are removed. And also it is necessary to strictly follow the rules of fire safety. Such models have a simple structure and low performance, but can boast of low noise.

Boilers with a closed combustion chamber are equipped with a special burner. The air supply is carried out using a fan. Combustion products are removed in the same way, therefore no chimney draft is required.These types of boilers are more productive, less harmful to the environment and undemanding to the arrangement of the occupied premises. The main drawbacks of the operation of such boilers are their main disadvantages - the fans emit too much noise during operation, and also because of the complexity of the device its reliability suffers.

Basically, all listed types of boilers are convector. Their main drawback is that a large amount of heat goes along with the products of combustion, as a result of which performance suffers. Bosch tried to solve this problem by releasing condensing boilers. The advantages of this type of boiler include efficient gas combustion with low fuel consumption and safety for the environment. They all have a closed combustion chamber.

Electric type of boiler is the best solution for heating apartments. They are not only safe, but less demanding. Such units work at the expense of electric copper TENA and the steel heat exchanger. Most models are double-circuit solutions. Power equipment ranges from 9 kW.

Fuel oil boilers are considered to be a good alternative to gas. The difference lies in the presence of a fan burner, which ensures performance and safety. However, this type requires certain conditions for location. It is advisable to take a separate room equipped with a chimney for the boiler, so that already expensive equipment will require additional costs. Boilers can be single-circuit and double-circuit. They operate on liquid fuels such as diesel fuel, kerosene or various used oils. The basis of such units are the heat exchanger, burner and their control equipment.

Solid fuel boilers long-burning are most often used as a backup. They work on wood, coal or peat. The units have a circular system that ensures their autonomy. Most of these Bosch boilers are equipped with automatic fuel supply with a weekly supply.

According to their location, boilers can be of two types:

• Wall - it is most popular with buyers, as compact and easy to use.Due to their relatively low weight, they are easily installed, and fasteners are able to withstand two times more weight than they have to. Such heaters have a closed combustion chamber. They have not very high power, but it is enough to warm a residential apartment.

• Floor boilers are much more powerful, so their mass and dimensions are significantly superior to wall heaters. And they have a higher price. This type of unit is most often used for heating large private houses or other premises with a large area.

Any, even the highest quality technology has the ability to break. Despite the reliability of the boilers, from time to time there may be malfunctions in their operation.

If the heater encounters a problem, it will immediately report it either with a special light bulb, or it will display an error code on the display:

• An EA error means the system cannot detect a flame. This can happen if there is no connection to the gas network, the valve is closed, or the pressure is too low. E9 signals that the limiter in the flow has been activated.In this case, it is worth checking the system pressure, the efficiency of pumps and temperature sensors. The ER code appears when a malfunction occurs in one of the boiler units and the device is not functioning properly.

• Errors of group C, as a rule, are connected with malfunctions in the operation of a fan or a differential relay. For example, code C6 reports that it does not close. If the CE error occurred, then the pressure for the heating system is not high enough, so you need to add water.

Serious damage to the heater is almost always dangerous. It is much more dangerous to try to fix the equipment by yourself, especially when it comes to gas boilers. There is a risk of disrupting the gas supply system and causing a leak. In such cases, it is better to contact a specialist in advance.Electronics though not so dangerous, but more complicated. Attempting to do an independent repair of an electric boiler can bring even more damage to the equipment.

In rare cases, you can avoid the cost of calling the master. For example, if a heat exchanger is clogged, this usually happens due to overheating. It should be removed and cleaned with your own hands, but it should be done very carefully. And without serious damage to the boiler can be repaired fan pressurization. If it rotates slowly or produces a lot of noise while doing so, you need to check the bearings inside. Most likely, they will have to be lubricated with engine oil or replaced with new ones. If this does not improve the operation of the fan, then the winding should be checked, and this is already a job for an electronics specialist.

Due to high-quality assembly, Bosch boilers do not often need major repairs. In most cases, the master is able to diagnose damage after an external examination. Only 10% of faults are "not obvious." Almost all parts of heaters are subject to replacement. However, how much will be repaired, service center staff will be able to answer only after a thorough inspection.To avoid unnecessary damage, you should be extremely careful when installing and setting up the boiler.

Review the Bosch wall boiler in the next video.