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On the market household appliances It's probably already hard to imagine trademark better known than Bosch. The company quite successfully supplies products under its brand all over the world, ranging from irons, refrigerators and ending with power tools. A separate division is production by a German concern heating equipment: boilers and water heaters from Bosch Thermotechnics.

Solid fuels have been heating homes for many years, both in Russia and abroad.
They are especially popular among Russian consumers gas Bosch speakers , reviews of which can often be seen on specialized websites. Buyers are attracted by quality and reliability at affordable price for instantaneous water heaters from German manufacturer.

Let's figure out together whether a Bosch gas water heater is worth buying today, given this wide choose manufacturers nowadays. To do this it is necessary to consider the lineup, prices and specifications device from a German concern, disadvantages and advantages compared to its direct competitors on the market.

Let's make a short review of Bosch geysers based on the operating instructions, as well as reviews from specialists and customers. Let's look at the main malfunctions of the Bosch column: why the pilot light does not light up or the wick goes out, etc.

Model range and features of Bosch geysers

Gas water heaters Bosch, unlike its direct competitor, has a very wide range of models. Many modifications with different types of ignition and performance, design and size. Water heaters are available in two colors: white and gray.

Bosch geysers: model range

All gas instantaneous water heaters are assembled in Portugal, the difference is only one, the most budget model speakers - “Therm 2000 O”, type W10 KB, which is assembled in China. Now let's look at all the models and series that are supplied to the Russian market.

1. Series Therm 2000 O

This is a budget geyser with low performance hot water 10 l/min. This device is equipped with automatic ignition from batteries, a tubular copper heat exchanger and a stainless steel gas burner.

As in the columns, it contains an emergency draft and flame control sensor, as well as a water temperature sensor and a gas control system. The Bosch W10 KB speaker is compact in size and can be purchased inexpensively, starting from 8,000 rubles.

2. Series Therm 4000 O

The most popular models are available with both automatic ignition from batteries and piezo ignition by pressing a special button. Three types of different power and productivity from 10 to 15 l/min are available. Bosch geysers of this series have high quality copper heat exchanger for heating running water with an extended service life of up to 15 years.

Also, these models are equipped with smooth modulation of the burner flame, with the help of which the device itself maintains the set outlet water temperature. An important advantage This model is that this column turns on at a water pressure of only 0.1 atmospheres.

Instantaneous gas water heaters of this series have the following designation:

— Bosch column with automatic ignition (article “B” is present): WR 10-2B, WR 13-2B and WR 15-2B;

— Bosch semi-automatic column with piezo ignition (marked with the symbol “P”): WR 10-2P, WR 13-2P, WR 15-2P.

Bosch column with piezo ignition

3. Series Therm 4000 S

The main feature of this model is the presence of a fan for forced draft. These speakers can operate without a chimney, i.e. its special construction is not required. This feature very convenient when it is not possible to install a chimney in an apartment or house.

The release of combustion products and the flow of air into the gas water heater is carried out thanks to a special one, which is installed horizontally through the wall to the street. This kit is an option and is supplied separately from the device itself.

One more important feature Bosch geysers of the AM1E series is the presence of a digital control panel on which the possible mistakes in case of device malfunctions. You can also set the water temperature and, thanks to even smoother and more precise modulation of the burner flame than the previous model, this water heater will maintain the temperature with an error of only 1 °C.

The model is available with three types of power, with a capacity of 12 to 18 l/min. Unlike other models, this series of devices is energy-dependent due to the built-in fan, powered by a 220 V network. They are labeled as WTD 12 AM E23, WTD 15 AM E23 and WTD 18 AM E23, depending on their rated power.

Bosch gas water heater “automatic” with a closed combustion chamber

4. Series Therm 6000 O

The Bosch 600 series geyser is equipped with a built-in hydrogenerator. Automatic ignition in this model is carried out thanks to the flow of water through the column. When you open the tap, water flows into the water heater, and HYDRO POWER technology automatically turns on the gas water heater through a special hydrodynamic generator.

To ignite the device, neither a piezoelectric element nor batteries are required. Available in different capacities: 10, 13 and 15 liters per minute. They have the abbreviation WRD 10-2G, WRD 13-2G, WRD 15-2G, the numbers show performance.

The control panel has a small LCD display that only displays the water temperature. This parameter is set using a mechanical regulator on the front side of the column and is maintained automatically by the device.

5. Series Therm 6000 S And 8000S

These are industrial models of geysers from a German concern. The productivity of water heaters of these series is 24 and 27 l/min, respectively. These speakers are capable of supplying hot water 4-5 water points at the same time. Bosch water heaters are equipped with electric ignition and an informative LCD display on the front side.

The 6000 S series model has two built-in fans to remove combustion products and suck in air. Thanks to special condensation technology, the Bosch 8000 S water heater has increased efficiency heating water. In addition, the water valve of this model is equipped with an electric drive.

Bosch geyser device

Let's take a closer look internal organization instantaneous water heater using the example of a Bosch gas water heater of the popular “Therm 4000 O” series, model WR, with piezo ignition.

The internal structure of a Bosch geyser

1 - speaker body
2 — mounting holes for wall mounting
3 - viewing window
4 - water pressure regulator
5 - water temperature regulator
6 - fitting for gas hose
7 - chimney pipe
8 - traction sensor with protective manifold
9 - combustion chamber
10 - gas part
11 — piezo ignition
12 - water unit

The operating principle of a Bosch gas water heater with piezo ignition is quite simple. Set the water temperature regulator to the “On” position, press the button of this regulator, while simultaneously pressing the piezo ignition button from below. Hold down the thermostat button until the speaker turns on. They also set the desired water temperature.

The principle of igniting a gas water heater with automatic ignition is even simpler. We open the hot water tap on the mixer, and the column turns on itself, thanks to the batteries pre-installed in the device. Bosch gas water heaters come complete with a water heater. The pilot light for devices with piezo ignition is constantly on, but for automatic speakers it goes out when the device is turned off.

Technical characteristics of geysers Bosch WR series

Water heaters from a German manufacturer can operate on both natural and liquefied gas. The diameter of the gas supply pipe is 3/4 inch, water – 1/2. The diameter of the chimney pipe varies and, depending on the specific model, ranges from 115 mm to 135 mm. Other parameters can be seen in this table.

Bosch geysers: technical specifications

Malfunctions and repairs of a Bosch gas water heater

1. The pilot flame goes out or the column does not light up the first time.

The pilot burner needs to be cleaned.

2. The igniter goes out or the wick goes out when opening the faucet on the mixer.

Check the pressure if the dispenser runs on liquefied (cylinder) gas.

3. The water coming out is not hot or cool enough.

Check that the temperature regulator on the column is set in the correct position.

4. The pilot light goes out periodically.

The draft or water temperature sensor may be triggered. You need to call a specialist to fix these problems.

5. Poor water pressure through the column.

Either the heat exchanger of the column or water unit, or the mixer is clogged. Identify the source of the blockage and clean it.

6. The automatic dispenser does not turn on (does not light up).

Check the condition of the batteries. Replace them with new ones.

Advantages of Bosch speakers

— high-quality assembly;
— quality materials;
— wide model range;
— modern technologies;
- quiet operation.

Disadvantages of Bosch geysers

- an insufficient amount service centers;
— price per column;
— prices for spare parts.

Today we looked at the legendary manufacturer of household appliances, in particular, geysers from the German concern. All models, series and technical characteristics were analyzed in detail geysers Bosch. Reviews can be different, but speakers from this manufacturer undoubtedly occupy one of the first places in the ratings for quality and reliability. Let's watch the video.

In fact, the only drawback of devices of this brand is their price: a Portuguese-assembled model will cost an average of 12-15 thousand rubles. And it’s up to you, of course, to decide whether to buy a Bosch gas water heater today or not.

Household gas heaters(columns) are designed to provide consumers with hot water. Based on the switching principle, they are divided into automatic and semi-automatic. In automatic dispensers, it is responsible for igniting gas burners. electrical unit spark generator; in semi-automatic water dispensers, gas burners are ignited from a gas wick every time water is drawn.

In this article we will look at what to do if a gas water heater with a semi-automatic ignition system does not light up, the principle of operation of the ignition system, the causes of malfunction of the gas wick and methods for eliminating them.

Operating principle of a semi-automatic gas water heater ignition system

The ignition system for semi-automatic dispensers consists of:

• gas valve with electrical flame control;
• piezoelectric element;
• wick;
• thermocouples;
• sensor for monitoring coolant overheating and lack of draft in the smoke exhaust chamber;
• connecting wires.

Emergency shutdown diagram of the gas valve of semi-automatic gas water heaters (dispensers).

When you press the gas valve handle and turn it counterclockwise until it stops, the electric valve opens, the piezoelectric element generates a spark, as a result, the wick is ignited and the thermocouple is heated, which generates an EMF. After 10-30 seconds the voltage should be 15 - 30 mV. This voltage is enough to activate the magnet, which holds the valve stem in the open position. When the electrical protection circuit breaks, the current is lost and the controlled valve moves to the closing position under the action of a spring. Gas stops flowing to the burners and wick.

Reasons for the lack of flame on the wick of a gas water heater

1. The air supply hole in the wick is clogged. Air enters through this hole to ensure combustion. natural gas at the tip of the igniter.
2. The solenoid valve coil has burnt out. An electric magnet holds the valve stem; if it breaks, the valve will close.
3. The thermocouple has failed. The thermocouple, while in the flame, generates voltage that is supplied to the electromagnet.
4. The sensors for monitoring the water temperature and the state of the chimney (presence of draft) are faulty. At values ​​up to + 82 0C, the sensor is in the closed position; above this temperature, its bimetallic plates diverge and the circuit opens. The normal contact between the two plates can be disrupted by surface oxidation, mechanical or thermal damage.
5. Violated electrical circuit flame control systems. All elements of the flame control system are interconnected by wires. Their malfunction will inevitably lead to disruption of the entire system.
6. The nozzle or gas supply tube to the wick is clogged. Inner diameter The tube is 2.5 mm (external 4 mm) and the nozzle outlet diameter is 0.1 mm. These elements can become clogged with soot, dust, etc.
7. The operation of the piezoelectric element is disrupted, the spark from which ignites the gas.

Identifying the reason why the gas water heater does not ignite and eliminating the breakdown

To determine the reason for the lack of flame in the column wick, you must:

• Open the front panel of the device.
• Check the condition of the nozzle and air suction hole, gas supply tube to the igniter. If there is soot or dirt: remove it from the wick.

Ignition system for semi-automatic geysers.

• Examine the piezoelectric element for spark generation. If it is absent, inspect the wires and terminals for mechanical and other damage. Oxide on the contacts must be removed and damage repaired.

The location of the elements of a semi-automatic gas water heater responsible for ignition.

• Determine the thermocouple voltage. For check thermal generator Unscrew the special plug of the electric valve. Carefully remove the special cable that comes from the thermocouple. Using a multimeter in DC voltage test mode, connect one probe through the Alligator clip to the outer shell, and place the other one against the central contact. Since the height between the contacts is small, make sure that the probes do not touch each other. Use a lighter to heat the working end of the thermocouple. If the voltmeter readings correspond to 15 - 30 mV, the part is serviceable; for other values, the generator must be replaced. If the special wire is not suitable for further use, the entire thermocouple is replaced.
• Examine the valve inductor. In the valve connector, which was released when checking the thermocouple, insert one end of the probe into the middle of the connector, the other onto its body. Tester in ohmmeter mode. The coil resistance should be in the range of 10 - 15 ohms. If the circuit is open or shorted, the ohmmeter will record a value of 1 or 0, respectively. The coil changes modularly, along with the stem and valve.

Measuring the resistance of the solenoid valve coil of a gas water heater.

• Check the serviceability of the monitoring sensors. At room temperature The sensor control contacts are in a closed state. Using a multimeter, in diode test mode, examine the two sensor terminals for circuit continuity. The tester reading if the sensor is working will be equal to 0; in other situations, when the values ​​​​correspond to 1 or a resistance of 1 - 600 Ohms, it must be removed and a working one installed in its place.

Location of the water temperature sensor and the geyser chimney sensor.

• Test the condition of the wires and connections. Wires with sensor contacts are connected by soldering soft solder, with an electromagnet and a thermocouple with a special plug. Carefully inspect the wires, solder joints, and plug connections. Sometimes microcracks form at soldering points, which disrupt the integrity of the entire circuit.

After each remark has been corrected, it is advisable to check whether the column lights up or not.

Connecting gas stoves and Bosch water heaters

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The MaxiService company provides connections for gas stoves and water heaters. Masters installing and connecting gas stoves and water heaters from the MaxiService company perform work in most districts of St. Petersburg and the nearest suburbs. Our technicians also repair gas stoves and water heaters.

The MaxiService company provides a proprietary guarantee for connecting gas stoves and water heaters.

• Due to the impossibility precise definition volume of work by phone when accepting an order dispatcher
  reports the starting price for repairs.
• The warranty period for work is one month.
• Prices do not include the cost of replacement parts and materials.
• Maintenance in progress legal entities by bank transfer.
• Repair and replacement of spare parts for gas stoves is carried out if spare parts are available for sale.
• Repair and replacement of spare parts for imported gas stoves is carried out at a negotiated price.
• The cost of connecting water columns does not include the cost of installation chimneys and dismantling old speakers. The work is carried out at a negotiated price.
• The master has the right to carry out repairs at an agreed price after unqualified intervention.
• When completing an order, payment for technical There is no additional charge for consultation.
• When carrying out work in a 20-kilometer zone of the suburbs of St. Petersburg, a transport surcharge is established.

Geyser Bosch - Troubleshooting

About six months ago I bought myself a Bosch WR 10-2p gas water heater. I installed it myself, and there were no problems during operation; it did not leak anywhere. Now soot has accumulated in it and it has stopped heating the water. I also decided to clean it myself. Share your experience on how to do this. How to remove copper tube? To do this, do you simply lift the bracket and remove the tube? I also want to remove the heat exchanger so that it can be completely cleaned of any contaminants. I also noticed that the flame changed its color. If before it was smooth blue color, then now it is blue and yellow. Why did she get so dirty?

Your flow is bad fresh air, so a lot of soot is formed. You need to blow off the dust from the burner and rinse the heat exchanger thoroughly. Work for about 2 hours, and the instantaneous water heater WR10-2 p23 will be fine.

I have a Bosch WR 13-2p semi-automatic gas water heater installed. It has been working for 5 years, but now a problem has appeared. As soon as the cold weather began, strange things began to happen to her. And the water pressure is very good, gas is also supplied with sufficient pressure. But the water comes in very cold, so in order for it to heat the water as it should, the settings have to be set more high temperature. In this operating mode, after 5-10 minutes of heating, the unit turns off. I don't understand its structure at all, but here's what it seems to me. I suspect that the problem is some kind of sensor responsible for overheating. Perhaps it is very dirty, or broken, and is giving the water heater a false signal. Or maybe my chimney is dirty? How can I repair the device?

Most likely, your chimney draft is broken, and therefore the Bosch column turns off. Overheating protection is triggered; the traction sensor is responsible for it. Judging by the time after which the device turns off, then this is it. But other options are also possible. For example, if your model has a battery, it might be dead. You just need to replace it. It is easy to check the operation of the overheat sensor. You need to close the contacts. If the water heater continues to turn off, it is not due to it. The contacts in the thermocouple-sensor circuit may have oxidized or become loose. Then you will need to check all contacts. There may be a large accumulation of carbon deposits on the thermocouple. Then you will need to clean it. Perhaps the flame does not reach the thermocouple, then it will be necessary to clean the igniter. Gas instantaneous water heaters WR13-2 p23 are available with both a thermocouple and automatic ignition, which feature battery-powered electronics. You have a gas water heater with a thermocouple. It contains a thermocouple connected in series, gas valve and an overheating sensor (draft sensor). If there is poor contact anywhere in this circuit, the gas valve closes. Accordingly, the column goes out. In order to check whether the draft is really good, you need to close the contacts on the overheating sensor. If the device starts working normally, it means the sensor is faulty or there is a problem with the traction. If it continues to work incorrectly, then you need to look at the height of the flame and how much it hits
wick. Very often, a Bosch speaker has a wick set to minimum power, and if the draft is strong, it deflects the flame to the side, naturally it goes out. You need to inspect the water heater to say anything more specific. In any case, you will have to correct this breakdown, since if the traction sensor is faulty, it is prohibited to use the unit.

I decided to buy myself a Bosch W10 kb gas water heater. I studied it from all sides. I have a chimney, it is a pipe with a diameter of 12 cm, 2 m of this pipe lies under the false ceiling, and then hangs 1 m from the ceiling. I want to leave a pipe with a diameter of 12 cm running along the ceiling, and replace the rest with a pipe with a diameter of 6 cm. As I understand, at the junction of the 12 cm and 6 cm pipes, the pressure should drop by 2 times. That is, the flow will slow down. The chimney is even wider, so the pressure there should drop even more. This model has enough installed powerful fan so that there are no problems with neighbors?

You can easily connect a Bosch speaker by taking air from the room. If you look at the instructions, it is written there in detail. Make a transition between 6 cm and 12 cm pipes, then connect your corrugation. All connections must be well insulated, since gas is supplied there under pressure. Your chimney has no impact on your neighbors. Everyone has their own access to the roof. You can also install a splitter to take air from the street and release combustion products into the chimney. Holes smaller than 15 cm do not need to be agreed upon with anyone. The coaxial pipeline should not be taken outside, as it is necessary to maintain the distance to the nearest windows. If you don't live in top floor, you are unlikely to be able to provide this.

Please tell me a Bosch WR 13-2b (gwh 15) gas water heater with electronics. I went to different stores, and the sales assistants constantly confuse everything. I'm afraid that they won't bring the one I want. Tell me also what the dance names 2B and 2P mean? Do any of them have a flow meter installed? If you know how much water has passed through the electronic unit, the dispenser should automatically calculate how much gas
required to heat water? Why then do these models perform so poorly? I don't understand. It should hold the temperature much better than a mechanical one.

The number 2 means the line number. The letter P means that the water heater operates with a constantly burning pilot light.

Gas control is carried out using a thermocouple. The letter B means that the device is battery operated. In it, the igniter burns only when ignition is in progress. Gas control using ionization. The numbers after WH are the number of liters per minute, which at a temperature of 25 degrees, at the set
gas pressure passes through the unit at the inlet. Any column where it is implemented mechanical drive gas valve from the membrane, and manual adjustment of the gas supply by tap is installed - considered mechanical. In the electronic model, a water block with a membrane is not structurally provided. There is also no manual adjustment of the gas supply using a special switch knob. It establishes the necessary
temperature, and everything else is done automatically. Also installed there are inlet and outlet temperature sensors, and an air flow and turbine speed sensor.

How to turn on the Bosch WR 10 - 2P gas water heater?

It turns out that, no matter what power is set, the device is set to automatic combustion mode to maintain the required temperature. This reduces gas consumption, significantly reduces emissions into the atmosphere, and increases the efficiency of the device. Such water heaters work without problems. But they are usually connected to a 220 volt network. Since all automation and other devices operate from the network. Mechanical models could never support required temperature, since they do not have such systems for this. There was an attempt to release a Bosch Junkers valve-membrane device not only for ignition, but also for burner modulation. But this line was not successful.

I installed a Bosch 10 gas water heater at my place. Moreover, it was adapted to run on liquefied gas. To do this, I installed other injectors and removed jumper j6. But the device won't start, and I don't understand why. When I turn it on, the green button lights up for a few seconds, and then the red light blinks and the fan starts working. No further action occurs.

Since the unit reacts to turning on the water by turning on the fan, first of all you need to make sure that the pressure switch is working properly. This is the weakest point of all smoke exhaust models. If the fan turns on even when the tap is closed, and is blocked, you need to look at the sensors and look for a break. The pressure switch contacts may be incorrectly connected or reversed. After you have readjusted the water heater, it was necessary to check its operation on a regular gas heater to make sure that the unit is working properly and there are no breakdowns. It could have been damaged during delivery. So check the diagram. Check the temperature sensors, check the pressure switch. If possible, go to setup mode and set the regulator to maximum. To do this, the burner buttons must be pressed and held, and then the switch must be switched, which must be held until the flashing starts. Also check the fuses located in the control box.

Water began to flow from my Bosch 15 gas water heater, and it flows out of its upper part. It has been in operation for 8 years, and before that it has never broken down. Can I repair this?

Hardly. Get ready to buy a new water heater.

There was a malfunction of the Bosch WR 10-2 p geyser. It worked for 4 years without any problems, but a month ago its radiator started leaking. In order to find the leak, I took it off and looked. I found damage to the top. It is impossible to solder there because of the ribs. In order to stop the leak, I filled the damaged area with sealant. At the same time I flushed the radiator. The water heater began to work well. But now it has appeared new problem. The device stopped lighting. The pressure is good, but the water coming to the tap is cold. If you look through the viewing window, the gas burns not with a blue, but with a yellow flame. Also, the combustion power is much less. What could have broken? The traction is present, I checked it with a lit newspaper. Gas is supplied with good pressure, checked using gas stove, which burns without problems. The boiler connected to this gas also works.

On flow gas water heater WR10-2 p23 try to disassemble and wash the heat exchanger and burner. You also need to blow out the igniter. This should be done as soon as the flame begins to change color. To solve the problem, try unscrewing the two screws on the side and in the center, but do not remove them entirely. Use a flathead screwdriver to pry up the burner and pull it out. Find the rubber ring there. Don't forget to lubricate it with soap or special silicone grease. Also find the wire with solenoid valve and turn it off, without this you will not be able to disconnect the burner from the unit. The heat exchanger will also have to be removed, as it will interfere with dismantling the burner.

I have a Bosch WR 15 gas water heater installed. We turned off the old electric boiler and took it away, and in its place we installed a device with a generator. Now nothing works. Water is supplied at a pressure of 3 atmospheres. The gas pressure is 2000MP, instead of the required 1300. That is, everything is supplied as it should. This is how we launched it. The first time, ten attempts, after opening the hot water supply tap, clicks were heard from the water heater, and then error EA appeared. The instructions say that there is no gas for the main burner. Tried to run it more than once. After this, the flame appeared. The water began to heat up, but not to the desired temperature. The device shows 58 degrees, but in reality the water is much colder. And then the flame went out again. It seems to me that some valve is not working fully. The flame height is no more than 4 cm. To solve the problem, I want to try to adjust the gas pressure in front of the burner. Is it correct?

The pressure is sufficient for the device to work correctly. But please note that it must be measured not only when the water heater is turned off, but also when it is running. It should not fall below 13 millibars. If the gauge shows 58 degrees, then it could theoretically heat up to that temperature.

The initial problems with starting are also logical; there was air in the system and it took time for it to come out. The flame goes out most likely due to the protection being triggered; perhaps you have problems with traction.

Check contacts and sensors. Also check the power supply from the generator using a multimeter. A stuck valve usually either opens or does not open. You can try to blow out the gas fittings, but not more than 0.3 kg/cm. On more pressure it is not calculated. You can also check the valve using a 3-volt battery; when it operates, a click is heard.

The Bosch WR 10-2p gas water heater is faulty. When starting, clicks are heard, and sometimes it even lights up, but only if the water supply tap is open to maximum. The water is supplied warm, but not enough. She was much hotter before. After the device starts up, the water supply pressure can already be reduced, and everything will work. If the unit does not want to work at all, I blow cold air on it, and the problem is solved. But you need to clearly find the point at which to blow. It is located next to the green indicator. During this procedure, the indicator flashes, and after a while the device begins to work. Gas is supplied from normal pressure. What could it be?

Try using the right control knob to reduce the flow rate. To do this, you need to turn it towards increasing the temperature to the average value. If you blow air onto a valve or igniter, then you just need to clean the unit from dust. The spark should always appear.

I put into operation a Bosch WR 13-2 geyser. I adjusted the pressure, it's as it should be. But what confuses me is that if the tap is not fully open, at least halfway, the unit “puffs” but does not light up. I found the minimum water pressure in the passport. Is the minimum flow really not standardized?

The passport of the instantaneous water heater WR13-2 p23 indicates both the rated power and the rated flow at a water temperature of 25C. If the water does not heat up to the temperature you want, then the valve is not opening all the way. There can be many reasons for this. We need to figure it out. For example, the rod of the water block does not move through its full amplitude, and accordingly does not fully open the gas stop valve. Even a minimal membrane rupture is enough to cause this problem. The internal valves could also be clogged. If you deal with gas block, then there may be insufficient voltage supplied from the control unit to the valve. It may not be enough for the valve to open all the way. The membrane could also tear or stretch. The rod could have stuck. The control unit supplies voltage, gas from the front cavity is supplied to the pilot burner. The control unit receives a signal that a flame has appeared. After this, it applies voltage to the lower valve, which shuts off the gas supply to the anterior cavity. The gas pressure in the rear cavity moves the membrane forward, and the gas supply valve opens to the main burner. Gas escapes from the front cavity and the igniter turns off. The flame control electrode continues to detect it as the main burner burns. Using the gas supply adjustment knob, you can set the spring stiffness, which counteracts the displacement of the membrane. Adjust accordingly gas tap supplying gas to the main burner.

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Bosch geysers (this is the common name given to instantaneous water heaters) - a device in which cold water, flowing through the tubes around the heated heat exchanger, it is heated and supplied to the consumer at a given comfortable temperature. Bosch geysers heat water using energy obtained during gas combustion.

At the end of the 19th century, the designers of the Bosch concern first designed a gas water heater. The device has undergone numerous modernizations over time and in our time represents a fully automated product, which is still in demand in households where, for a number of reasons, there is no centralized supply of hot water.

Today, instantaneous water heaters are produced by companies all over the world; Bosch is rightfully considered the leader in the production of these products. The Bosch concern offers the consumer a wide range of devices with different power characteristics that can satisfy all the homeowner’s needs in heating the required volume of liquid.

Modern Bosch geysers are capable of heating water online. The owner does not need to waste time waiting for the required volume of water to warm up. Instantaneous water heater stuffed with all kinds of sensors and valves that allow you to receive comfortable temperature at the water point. Bosch geysers, regardless of model, are equipped with power modulation.

Thus, as water consumption increases, the heating intensity automatically increases. If the consumer reduces the pressure by closing the tap, the burner automatically reduces the flame, reducing the intensity of work. The main advantage that unites Bosch geysers is energy efficiency and cost-effectiveness, which result in significant financial savings in the form of gas bills.

Before we begin our review of the Bosch instantaneous water heater, we suggest you decide on the necessary parameters of the device that are suitable for you. There is no need to buy a Bosch geyser with a “reserve” of power; this will only lead to high initial costs and subsequent excess consumption of gas and, as a consequence, financial resources.

On the other hand, the choice should cover all needs for hot domestic water consumption. We told you how to choose a Bosch gas water heater twice, this and the second time, in them you will find seven answers to basic questions.

Geyser BOSCH Therm 2000 O W 10 KB

Bosch geysers open the series of devices with the initial model Therm 2000 O. Despite the entry level, the budget device includes all the minimum required parameters to satisfy households in the constant and comfortable consumption of heated water.

A narrow Bosch Therm 2000 O gas water heater is installed in a place where sufficient air is guaranteed, in a well-ventilated area - usually in the kitchen.

Therm 2000 O Technical equipment

• The weight of the structure is 10 kg.
• Capacity 10 liters per minute;
• The copper heat exchanger is manufactured using high-precision ultrasonic soldering;
• Stable performance indicators with low blood pressure in the waterway (from 0.15 bar)
• Electric ignition from two 1.5 volt batteries;
• The automation, based on a signal received from a special sensor, will block the gas flow in case of overheating of Therm 2000 O.

Therm 2000 O technical specifications

Gas instantaneous water heater Bosch Therm 4000 O WR10/13

If in your home there is a problem with ventilation and natural smoke removal is difficult, then you should pay attention to the latest model Therm 4000 O is specially designed for such cases. Bosch Therm 4000 O NEW geysers are protected against reverse draft by means of a special sensor. Therm 4000 O NEW is supplied to the domestic market with two power options under the names: WR10-2P S5799 And WR13-2P S5799. Installation in rooms with permanent residence people, as a rule, the device finds its place in the kitchen space.

Therm 4000 O NEW Technical equipment

• The weight of the WR10-2P S5799 structure is 11 kg. WR13-2P S5799 – 13 kg.
• Piezoelectric ignition;
• Hot water production WR10-2P S5799 10 liters per minute;
• Heated water production WR13-2P S5799 13 liters per minute;
• A water pressure of 0.1 atmosphere is sufficient to turn the device into operation;
• Power and water flow are set manually and separately from each other;
• The igniter lights continuously in standby mode;
• Equipped with an atmospheric burner made of stainless alloy, with factory settings for natural gas operation. If it is necessary to reconfigure to work from liquefied gas, the company’s engineers took care of the jet re-equipment kit;
• The ionization sensor is responsible for monitoring the presence of flame;
• The automation, based on a signal received from a special sensor, blocks the gas supply in case of overheating of Therm 4000 O.
• The copper heat exchanger is manufactured using high-precision ultrasonic soldering. Operating time – 15 years;
• Stable performance indicators with reduced pressure in the water main (from 0.15 bar).
• Hot water outlet equipped with a temperature limiter.

Therm 4 000 O NEW specifications

Gas water heater Bosch Therm 4000 S New generation WTD 12 AM E23

Gas water heaters Bosch Therm 4000 S WTD 12 AM E23, WTD 15 AM E23, WTD 18 AM E23 – the company's engineers equipped the combustion chamber closed type. These devices will be the optimal answer to the problem of installing a device in an apartment or country house where there is no stationary chimney.

The closed combustion chamber minimizes the likelihood of a burning smell and maintains comfortable temperature regime and does not burn oxygen in the living space.

System coaxial pipes 60/110 mm. completely replaces the bulky traditional chimney and copes well with the flow of combustion air and the removal of combustion products.

Therm 4000 S Technical equipment

• The turbofan removes combustion residues through a system of coaxial pipes measuring 80/110 or 60/100; the 80/110 adapter is not included in the device.
• The atmospheric burner is made of stainless metal, with factory settings for operating on natural gas. If it is necessary to reconfigure to work with liquefied gas, the company’s engineers took care of a set of retrofitting jets;
• A water pressure of 0.1 atmosphere will be a sufficient condition for turning the device into operation;
• The inlet water pipe is equipped with a temperature and flow sensor;
• Electronic ignition from a 220 V network;
• The ionization sensor is responsible for monitoring the presence of flame;
• Set of protective devices against freezing;
• The online temperature is shown on the LCD display. If, after self-diagnosis, a malfunction is detected, then an error with graphic representation code;
• The copper heat exchanger is welded using high-precision ultrasonic soldering. Operating time – 15 years;
• Electronic modulation of power and flow allows maintaining the set value of the hot water supply mode at the outlet (from 35 to 60 °C)
• Bosch geysers monitor the temperature reading of the heated liquid with an accuracy of plus or minus 1˚ C°;
• Volatility dependent on 220 V voltage.

Therm 4000 s operating instructions are posted on the resource in the section

Therm 4 000 S specifications

Gas water heaters Bosch Therm 4 000 S Trouble-shooting

Gas water heaters Bosch Therm 4000 S, O Device

Geysers Bosch Therm 4000 O series

Yes, don’t be surprised, it seems like we were just disassembling a device with the same name with the index NEW - new generation. Nevertheless, Bosch did not stop the production of three copies of instantaneous water heaters of the Therm 4000 O series, namely:

The power range of Therm 4000 O is between 17 - 26 kW, from a technical point of view this assumes a steady flow of heated water of 10-15 liters per minute, taking into account a delta of 25°C from the initial to the final state. Bosch WR 10/13/15 geysers retain a number of advantages, such as time-tested, intuitive and easy-to-use control controls.

Additional advantages of a Bosch geyser include simple installation, elegant design and compact dimensions. Multi-level degrees of protection and safety elements provide the device with optimal security, without increasing the cost and without making it an expensive product segment. On our resource, in the Bosch gas water heater section, there are instructions for Bosch operation Therm 4000 O, on page .

Therm 4 000 O specifications

Gas water heaters Bosch Therm 4 000 O Trouble-shooting

Geysers Bosch Therm 6000 O gas instantaneous water heater WRD 10 13 15 2 G

The Bosch engineering department equipped the Therm 6000 O geyser with a built-in generator. Technological solution HydroPower – modernthe ignition unit freed a person from participating in the process of igniting the device, and made the operation of the model fully automated.

The flow of water after opening the tap begins to rotate a small turbine, which gives impulse to the hydrogenerator. This in turn generates electricity who feeds it to the electronic unit of the device produces an electrical discharge that helps start the Bosch gas water heater.

Inside the domestic market, we can find three modifications: WRD 10-2G, WRD 13-2G, WRD 15-2G, where the first digital designation indicates the maximum fluid flow rate measured in liters per minute.

A small but multifunctional screen is located on the control panel, displays the temperature or informs with a code about a detected error in the operation of the device. The required temperature value is set by a mechanical regulator and is maintained automatically throughout the entire service life.

Therm 6000 O technical equipment

• HydroPowe's technology solution does not require a constantly burning wick flame. Automatically, without a piezoelectric element or batteries, without human intervention, the device ignites after opening the tap from the built-in hydrogenerator.
• The automatic mode of the device independently maintains the temperature set by the owner, even during moments of fluctuations in pressure values;
• Sufficient to turn on the device, the water pressure value is 0.35 Atm
• Continuous operation does not require breaks or other time restrictions;
• The declared service life of the heat exchanger is 15 years. Material – copper
• In case of overheating, it will be blocked for cooling based on a signal from the safety sensor;
• Gas mixtures of smoke under the supervision of sensors;
• Ionization currents monitor the presence of a flame;
• The LCD screen constantly shows the temperature. If a breakdown occurs, it displays an image of the error in the form of a specific digital code;
• Stainless steel burner.

Therm 6 000 O specifications

Gas water heaters Bosch Therm 6000 S WTD 24 AME

The industrial model is represented by one Therm 6000 S WTD 24 AME device. The power of the Therm 6000S water heater is enough to effortlessly heat 24 liters per minute of liquid passing through it to a hot state. Bosch Therm 6000 S geysers have a design solution that allows the devices to be combined in a cascade (maximum 12 pieces).

Thus, in total, Bosch geysers produce a continuous flow of heated water in the amount of 288 liters per minute. By the way, this solution does not require electricity consumption while waiting, since water heating starts when there is a need.

Water is heated only to the values ​​​​set by the user, without changing the parameters, even with pressure fluctuations. This ensures complete absence of discomfort during operation of the entire cascade chain of devices.

Therm 6 000 S specifications

Bosch geysers of the new Therm 8000 S series

Increased efficiency of liquid heating is achieved by using the latest condensation, innovative operating method. Therm 8000 S achieves an efficiency value of 100%. Performance industrial device allows you to prepare 27 liters per minute of heated water. The design solution for working together in a single cascade of up to 12 devices at a time provides a constant flow of hot water supply in the amount of 324 liters per minute.

Bosch Therm 8000 S geysers are designed to be used with preheated liquid, good example– joint use of the system of use solar energy in the design of collectors. In addition, the water valve of the series is equipped with an electric drive.

Therm 8 000 S specifications

Therm 6000 S, 8000 S technical equipment

Geysers Bosch Multi-level security system

• A special sensor that monitors the temperature in the chimney is responsible for sending a timely signal to the valve, which shuts off the flow of gas in the event of a draft failure;
• The presence of fire is monitored by the ionization electrode;
• The control unit receives the heating temperature signal from the excessive heating sensor (negative temperature coefficient (NTC) resistor) located in the heat exchanger. When it detects excessive heat, it locks the device;
• Safety elements: – sensor monitoring temperature readings of water at the inlet and outlet pipes; Limiters t° C° – closed housing sensor;

Gas water heaters Bosch Therm 6000 S, 8000 S Device

The operating instructions for Bosch Therm 6000 S are located in the Bosch section, on the page. The manufacturer's warranty is limited to a period of 24 months. Operational life Product service life is at least 15 years. The list of service partners is presented in the form interactive map, where you can easily find your nearest repair service provider.