How to adjust the gas water heater

Preparing to set up a water heater

Although there are instructions for the Bosch, Selena and Neva gas water heaters on how to set them up correctly, not everyone understands how to do this. Having made a mistake at the very beginning, the device begins to work not as it should. You should start by regulating the water supply.

First of all, adjust the water regulation. If you do it at the last moment, then all the settings will be incorrect. The flow must be the smallest . The values can be found in the documentation, they are usually 6, 10 and 12 liters.

The main thing is that there is only one tap for work.

Basic rules of use

Do not use the gas water heater before reading the operating instructions supplied with it. Here is a general list of rules that are relevant for any instantaneous water heaters:

Only specialists from the gas supply company can connect the device to the gas main;
changes cannot be made to the design;
ventilation should be maintained in good condition;
for speakers with an open firebox, the chimney must have good draft force;
During operation, the device should not touch the front panel of the water heater and the smoke exhaust elements.

Note! If you smell gas in the room, you must immediately turn off the water heater and ventilate the room. Gas workers should be called to determine the location of the gas leak.

Do not operate such a device until the malfunction is eliminated.

The following recommendations will help extend the life of your gas water heater:

It is undesirable to set the heating temperature above 55°C to avoid increased scale formation;
it is risky to use a water heater without a water filter if the water in the water supply is hard;
The heat exchanger should be cleaned of scale as it appears.

Compliance with all operating rules will save fuel and increase the service life of the device.

Starting the device and adjusting the temperature

To correctly set up hot water in the device, you must:

Open the hot water mixer fully;
Using the water switch, select the required temperature value;
Close the tap.

According to the advice of professionals:

Wait for the moment when the pressure in the line drops, but the column will still work;
Turn the water toggle handle to the maximum;
Turn the gas regulator to the minimum value until the temperature is as desired.

For final preparation, it is worth adjusting the gas supply. To do this, you need to look at the technical data sheet and find out the minimum value for this brand.

The toggle switch is turned to the minimum value.

Turn on the gas supply valve. At the gas water heater, Electrolux and Ariston do this after connecting to the network. The Oasis, Junkers and Bosch gas water heaters are connected when the batteries are installed.

The hot valve is turned on and the device starts working.

How to adjust the water temperature

Turn on the mixer and check the water heating temperature. It must be twenty-five degrees more than the original one. It is worth noting that the water in a gas boiler heats up gradually. The geyser is adjusted using the gas lever.

Reference! You can also adjust the temperature using the water toggle switch. If the flow force increases, the heating temperature will decrease.

Professionals do not recommend heating water above fifty-five degrees. This has a bad effect on the device, as scale forms.

Blood pressure problems

Setting up a geyser requires some time. Accordingly, the result will be visible later. After each stage, it is worth pouring out the water and letting it heat up again so that the values are correct. Low pressure in the device may interfere with normal operation.

If you have problems with blood pressure, you should perform the following manipulations:

Remove the casing from the device;
Loosen the locking bolt, use a pressure gauge to check;
Remove the seal from the adjusting screw;
Turn on the boiler;
Set the values to maximum, unscrew the hot water supply taps;
Adjust the desired pressure.

The Bosch gas water heater, namely its pressure in the nozzles, is regulated in the following way:

Remove the casing;
Attach a pressure gauge;
Loosen the locking screw;
Attach a pressure gauge to check the pressure in the injectors to the nozzle.

Next, the Bosch gas water heater with maximum thermal power is regulated:

Remove the seal from the screw;
Turn on the device;
Hot water taps are turned on;
The adjusting screw adjusts the pressure in the nozzles;
Put the seal in place.

There are brands that have a special “Winter-Summer” mode with temperature adjustment. This handle was made at the bottom of the Ariston gas water heater. Adjustment of the Oasis gas water heater is located on the front panel. The peculiarity of the mode is that in winter the power is higher than in summer. The heating power of the liquid in the column is directly related to the temperature of the inlet stream. In winter, the regulator is set to “maximum”, the heating will be at its highest. In summer, the temperature of the inlet flow is higher and is set to the minimum position. This saves resources.

It is easy to remove bad pressure when checking.

To do this, you must perform the following manipulations if the device has already been used:

Pay attention to the rubber membrane. The performance of this part is directly related to the pressure in the line. At the moment the integrity of the membrane is broken, namely when it is exhausted, gas does not flow and the burner does not turn on. The problem is solved by replacing the part.
Pay attention to the mesh filter. It is located at the entrance to the water block. The water pressure becomes lower due to debris clogging the part. The problem is solved by cleaning.

Rating of the best models of Bosch geysers

The company's official website provides a wide range of Bosch gas water heaters, so every consumer can choose an option based on cost and technical characteristics. Each classification differs in the type of ignition, power and performance, but they are all made in two main shades:

Modifications are made at the Portuguese plant, but you can purchase Bosch devices in Moscow, St. Petersburg and any other city through official representatives. There is a separate series of geysers, which are assembled in China; in fact, it is the most budget option. Let's take a closer look at which versions of devices are supplied to the domestic market.

Bosch 2000-O THERM

This line is considered the cheapest because it has a relatively low productivity of up to 10 l/min. and involves operation in combination with one water intake point.

Water heaters have a battery-powered ignition system, a tubular-type heat exchanger made of copper material and a steel burner. The units contain a controller for the degree of draft and flame level. The devices were also equipped with a liquid temperature and gas flow sensor. This version includes a Bosch W 10 KB device with compact size parameters and an estimated cost of 8,000 rubles.

Bosch 4 000-O THERM

The most popular series of Bosch geysers, which is available with automatic ignition or piezo ignition. In the first case, water heaters operate on batteries and require regular replacement of the voltage source; the second option requires constant pressing of a key to start operation. There are 3 varieties available on the market, with different power ratings and performance levels - 10-15 l/min.

BOSCH WR 10-2 P23

The units contain a heat exchanger consisting of copper material, due to which the device’s service life is increased to 15 years. In addition to all modifications, they are equipped with smooth modulation of the burner fire, thanks to which the device is able to independently maintain the specified temperature even during pressure surges.

One of the most important advantages is the ability to operate at a water pressure in the plumbing system of 0.1 atm.

This classification includes the following models:

automatic modifications with the prefix “B” - WR10 2B, 13 2B, 15 2B;
semi-automatic with the prefix “P”, indicating the presence of piezo ignition - gas water heater Bosch WR 102P, 13 2P, 15 2P.

Each option has an individual column ignition method. In the first case, ignition is carried out without user intervention when opening the water tap; in the second, you need to light the wick in the device by simply pressing the desired key.

Water heaters with piezo ignition are significantly cheaper than devices with electric ignition, but each option has its own disadvantages - the need to replace batteries, the inconvenience of turning on the column at more than an arm's length, etc.

Bosch 4 000-S THERM

The main distinguishing characteristic of devices in this series is the presence in the design of a fan that creates forced draft. The devices can operate without a chimney system, so no special maintenance is required. Such units are especially relevant for apartment owners who do not have the opportunity to install a chimney.

Therm 4000 S WTD 12 AM E23

The combustion products are removed and fresh air supplied through a coaxial chimney. This element must be installed horizontally through the wall directly to the street. It is sold as an additional option and, as a rule, is supplied separately from the gas water heater.

The units also have a digital display for determining error codes, setting the temperature mode and other programs. This device, thanks to the burner fire modulation device, can maintain the specified mode with an error of up to 1°C.

The line includes the following models:

From this it becomes clear that modifications are made in three versions in terms of power and heating intensity of 12-18 l/min. They have a drawback - the devices operate on a 220 V power supply, so the models are considered completely energy-dependent.

VIDEO: Bosch Therm 4000 O geyser (review and setup)

Bosch 6 000-O THERM

The Bosch 10 2G, WRD 13 2G, 15 2G devices are equipped with a hydrogen generator and automatic ignition of the burner, which is produced by a stream of water. When the tap is opened, the liquid circulates into the column, and the Hydro Power system automatically starts the device with a hydrodynamic generator. In this case, no batteries or piezoelectric element are required.

Therm 6000 O WRD 10 2G

As for the heating efficiency, it is 10-15 l/min, depending on the modification. The control panel is equipped with a liquid crystal screen, which displays all information about the operation of the device.

Geyser Bosch 6 000-S, 8 000-S THERM

These series are considered industrial because they are capable of producing 24 and 27 l/min. and work on 4 mixers. Geysers have electric ignition and a liquid crystal screen on the front of the panel.

THERM 8000 S WTD 27 AME

In the first case, the units are equipped with two fans, in the second - with a special condensation device and an electric drive.

Frequent problems

Every consumer should be aware of the problems that he may encounter when using a Bosch geyser. Regardless of which model it is W10 KB or WRD 13 2G, where it was purchased and at what price, the following situations may arise during use:

The water heater does not light up or the fire goes out a few seconds after starting. The pilot burner needs to be cleaned.
The wick goes out when water collection begins. You need to check the fuel pressure reducer. This must be done if the device operates on bottled fuel.
The liquid does not warm up enough or does not change the initial temperature at all. You need to examine whether the temperature regulator, which is located on the front of the control panel, is set correctly.
The pilot light goes out for no reason. The traction control or water temperature control probably turns on. This will require the intervention of a Bosch geyser repair technician.
The pressure of water coming out of the column has decreased. The cause of the problem is contamination of the heat exchanger, tap, or water unit. It is necessary to identify the source and clean it.
A water heater with an automatic system does not start. The batteries may be discharged or damaged; they need to be replaced with new ones.

How to adjust the flame of a gas water heater

Another way to set up a gas water heater is to adjust the flame. On the body of semi-automatic and automatic machines there is a handle designed to adjust the gas. With its help, the supply of blue fuel increases and decreases. The power of the device is directly related to this part.

As soon as the flame becomes larger, the gas consumption will be higher and the water will heat up better. Professionals advise changing the gas transmission speed to properly set the burner. As soon as the burning intensity is selected, the knob for changing the water pressure is applied. In order to change the combustion temperature, it is worth changing the “Winter-Summer” mode.

Adjusting the igniter of the gas water heater will help reduce gas costs in semi-automatic machines. The wick is adjusted using the bolt on the pilot burner. You should be careful when making settings. If you reduce the flame of the gas water heater's igniter too much, the device will stop working. If the flame increases excessively, excess gas consumption will occur.

Common Questions

Why doesn't the gas water heater turn off?

If a gas water heater turns on spontaneously, the cause is often a leak in the hot water pipeline. After fixing it, the problem will disappear. However, this situation occurs extremely rarely; much more often, the user is faced with the fact that the column continues to work even after the tap is closed. This is due to the diaphragm located inside the water regulator or “frog” becoming hardened and losing its elasticity. After turning off the hot water supply, the membrane does not rush to return to its place and continues to press on the rod, which opens the fuel supply. The problem is eliminated if you replace the faulty membrane.

Is it possible to turn on cold water while the gas water heater is running?

Experts categorically do not recommend turning on cold water while the gas water heater is running. There are a number of reasons for this:

The operating instructions prohibit turning on cold and hot water at the same time. You should set the heating temperature, which will allow you to obtain comfortable water without adding cold water.
The main reason is the rapid build-up of scale in the heat exchanger.

The “winter-summer” mode will allow you to quickly change the heating temperature. This function makes using the instantaneous water heater easier.

Do I need to turn off the device at night?

First of all, this issue is relevant for users who have old-style speakers or those with piezo ignition. They have a constantly burning wick, this process increases gas consumption and poses a certain danger. Therefore, it is better to turn off such models at night. This will not only reduce the risk of an emergency, but also save money.

It is not necessary to turn off a device with automatic ignition. The instruction manual doesn't say anything about this. The automatic dispenser has several levels of protection against emergency situations. Therefore, there is no need to worry about any danger.

Any instantaneous water heater has the following sensors to ensure safety:

traction sensor – checks the presence of traction;
ionization sensor – monitors the presence of flame;
thermostat – prevents the temperature from exceeding 90°C.

If one of the sensors is triggered, the device will turn off. The presented sensors provide the necessary minimum safety for the device.

Setting details

These devices have only one geyser temperature regulator. Thanks to it, the heating temperature and power are adjusted. The self-diagnosis system evaluates the operation of the components when turned on. If there are problems, the red light comes on and the device is blocked from starting. Then it is necessary to adjust the water pressure.

Then you need:

Remove batteries from the compartment;
Turn off the microswitch;
Provide a source of electricity;
Turn on the hot tap and turn on the microswitch;
The pressure on the burner should be maximum;
After saving the settings, the orange lamp will turn on.

In other columns, the water temperature is adjusted by turning the toggle switch and controlling the strength of the water flow.

Important! When adjusting, it is prohibited to exceed the maximum temperature specified in the instructions.

Unfortunately, it is impossible to easily set the settings according to the instructions. Each system has different meanings. If you have difficulties setting up the gas water heater temperature regulator with your own hands, you should turn to professionals.

Video: connecting a gas water heater with your own hands

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Poor pressure

Let's look at what affects the water pressure in a gas water heater:

Presence of blockages. Every pipe through which water moves tends to become clogged with debris. If we take an Electrolux geyser as an example, the blockage occurs in the mesh filter filled with lime and rust. If the water flow is low, the pressure will be minimal.
Engineering works. In this case, scale appears inside the heat exchanger. When the water is shut off and the water unit of the gas water heater resumes operation, a “water hammer” occurs, after which some of the scale penetrates into the mixer and forms a blockage.
Device power. For Bosch geysers and other models, the power of the device is important. It will create good pressure in the system. If the power of the device is less than eight, then the pressure will be minimal. For good operation of the geyser water unit, it is worth purchasing a device with a power of eight to ten kilowatts.
Scale. It usually occurs in metal containers in which water is brought to a boil. In a gas water heater, the heat exchanger is considered a tank. With hard water, scale forms on its walls, which subsequently moves into the tubes, due to which the pressure decreases.
Preventive actions. Any device, including a geyser, needs regular maintenance, namely the prevention of blockages. In most cases, a decrease in water pressure occurs due to careless use of the device.

How to ignite the device

Before starting work, you must open the gas and water taps.

There are three ways to light a gas water heater.

Manually

The manual method was used in older models

. In this case, you have to light it with matches. Here it was necessary to perform a number of such preliminary manipulations:

open the water supply connected to the device;
open the main valve to allow fuel to flow to the igniter;
light the wick with matches;
turn on the valve (main) for gas supply.

Using piezo ignition

We can say that this column is semi-automatic. How to use a gas water heater of this type? All you have to do is press a button

to ignite the wick in the combustion chamber. With the help of mechanical force, the spark is transformed - it is enough to ignite the ignition filter. With this method, a number of mandatory requirements must also be met:

in order to light the main burner, you will need to turn on the main regulator in the fuel supply;
The ignition filter will remain lit when the regulator is returned to the main position and the water is turned off.

Automatically

The ability to automatically turn on is provided by fully improved modifications that are easy and safe to use even for beginners. Hydropower system

are offered by most modern manufacturers (Bosch, its direct competitor Electrolux and many others). The process of starting work is simplified to the limit.

For example, in the Bosch Therm 6000 O, water pressure drives a turbine. It triggers an automatic igniter system inside the device for both the wick and the main burner.
The manufacturer Bosch has the Therm 2000 O and Therm 4000 O lines, which carry out electric ignition from batteries (you will need to monitor their service life).
The Bosch AM1E series speakers already have a digital control panel that will immediately show all possible switching errors.

The fully automated process has one drawback: many homes have low pressure in the water supply, and this may not be enough for the turbine to operate properly. In addition, such devices are significantly more expensive than their less advanced counterparts.

How to solve a problem

If the filter is clogged, you should remove this part from the device. Clean it with a stiff brush and water. If, during cleaning, a violation of the integrity of the filter is noticed, it is worth replacing the part with a similar one.

If the hot water pipe is clogged, you should run cold water in the opposite direction. The plug is removed, a container is placed under the device under water and both taps are turned out. The spout is closed with your finger. It is considered possible that cold water will push the clog forward.

It is not recommended to use chemicals that remove scale from the column. Their composition can easily destroy the metal surface. The best option is to use citric acid, which is dissolved in hot water.

If the blockage has advanced further than the pipes, it can easily penetrate into the faucet. The most “vulnerable” places where blockages mainly appear are considered to be a thin rubber hose, a filter and a faucet. The problem can be solved by disassembling the mixer and performing a thorough inspection. Dirt is removed using running water.

Installation and connection

The choice of this type of device must be taken extremely seriously, since placing such a device in a home in the kitchen of which there is no chimney duct (this should not be confused with a ventilation duct) is prohibited according to the standards.
The best way out of this situation is to purchase a product with a closed combustion chamber. A similar device like a chimney uses a coaxial pipe that will be led through the wall directly to the street. The specialist designing the circuit should warn about such a solution to the problem. The installation location of the product is usually determined by an existing and approved project, so those who want to have a high-quality water heater in their kitchen should be clearly familiar with the rules for locating the unit in a residential building. Such products can only be placed in the kitchen or in any other non-residential space, with the exception of the bathroom, since according to updated standards, the presence of this type of device is not allowed in it. To connect the outlet needed to remove the remaining burnt fuel from the device and to enter the chimney, which is located in the wall, you can choose a steel pipe with a wall thickness of 1 mm. Its diameter is from 1.2 cm. The use of a pipe made of aluminum sheet or corrugated type is not recommended. The section of such a pipe when exiting the product should have parameters of approximately 30–50 cm.

The device is installed at such a height that children cannot reach it, but adults should be able to easily reach all available controls. The distance from the wall closest to the device is at least 0.15 m. There should also be no obstacles in front of the product itself at a distance of 0.6 m. The pipe, which is intended for the removal of fuel combustion products, should only go to the chimney, if it is a separate building, or to a special chimney channel, which is usually built into the walls. Connecting the product to ventilation is strictly prohibited, since combustion products can enter the neighbors’ home, which is not very good.

A good solution is to mount the purchased device on the wall according to an existing special design and connect only the water supply hose to the unit’s branch pipe. Only an experienced specialist should connect the product to a gas hose and carry out other work with flammable fuel.

The procedure for installing the device is not original. Where the device is mounted on the wall, you need to make markings for future fasteners. The entire height of the fastenings is calculated so that the chimney pipe that exits the device vertically has parameters of at least 30 cm. The pipe to the chimney is installed at a predetermined angle. Its parameters can be calculated using the installation diagram.

After determining the hanging height of the device, you need to take the following steps:

measure how many centimeters are between the fasteners on the product, transfer these parameters to the wall using a level and ruler;
make small holes in the wall for dowels or hooks;
after installing the hooks, you need to hang the device on them;
Next, water hoses are installed, they are screwed to the water heater inlet pipe and to the drain pipe;
to check the tightness of the connection, you need to open the taps with cold and hot water;
the chimney pipe is secured to the placed unit using a diagram; the use of corrugation is permitted;
to connect the gas pipe, you will have to invite a professional who will do it as correctly as possible and give you documents on the registration of the device; at this stage, the connection of the water heating device can be considered complete, the boiler can be started for operation.

What malfunctions do the Neva Lux dispenser have?

The display of the Neva Lux geyser indicates an error code when problems occur.

Common fault codes that also occur at the Neva Transit gas water heater:

E7. After seven attempts to turn on the device, it goes out or does not work at all. The problem lies in the failure of the electric valves, the accumulation of soot on the electrode, the mixing of the ionization sensor, or the gas block boiling. The solution is to replace faulty parts or clean the soot with a brush.

L0. Insufficient fuel supply.

Causes:

Poor water pressure;
Decrease in temperature;
Exceeding the pressure of the gas water heater Neva Lux.

The problem can be solved by adjusting the temperature, installing a reduction gear and descaling the radiator.

E0. The device turned off on its own. Fuel does not move into the device. The solution is to check the gas valve of the Neva Lux gas water heater. In most cases, the gas supply stopped for some time.

E8. Malfunction related to the traction sensor. It is usually associated with a clogged chimney or a broken sensor. The solution is to clean the chimney from soot yourself or with the help of utility services, or replace the sensor with a new one, as well as check the tightness of its contacts.

Bosch speaker system

Structurally, Bosch GCs consist of a housing, a hole for installation, a window for monitoring the combustion process, a pressure regulator, a gas fitting, a chimney pipe, a draft sensor, a combustion chamber, piezo ignition and a tap water connection unit.

The body is made by stamping from high-strength sheet steel and is protected from temperatures and aggressive environments by a layer of enamel, which protects the unit not only from chemical and thermal damage, but also from all kinds of impacts. The boiler control knobs are located on the body.

The control system includes two regulators - for pressure and temperature of heated water. The water pressure is regulated mechanically - by turning the knob; clockwise - the flow rate increases, and counterclockwise - it decreases. The torch burning level is set using a slider control. The unit is connected to water and gas supply systems using a threaded connection.

The boiler chimney is made in the form of a pipe with a length of 10 to 15 cm and is used to discharge exhaust flue gases into the atmosphere.

Note! The dispenser operates on the principle of natural circulation, the draft in it is formed due to the height of the chimney and is controlled by a draft sensor, which sends a signal to automatically turn off the dispenser if the parameter drops to “0”.

The gas control system includes a burner, ignition device, combustion chamber, shut-off and control valves and a safety valve. The heating circuit consists of a pipe coil and pipes at the inlet/outlet of tap water. The automation system protects the Bosch gas instantaneous water heater from an emergency and is designed to preserve the equipment and ensure safe living conditions.