Adjustments and repair of gas water heaters Neva Lux

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After installing the gas water heater, all users are faced with the problem of correctly setting up the device. Factory indicators do not always correspond to natural conditions of use. In addition, an incorrectly configured device consumes more water, fuel and electricity, and also breaks down faster. Therefore, if you know how to properly set up a gas water heater, you can significantly save your family budget.

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1 Algorithm for setting the gas column
2 Possible difficulties
3 Features of setting up different models of water heaters 3.1 Setting up the Neva water heater

Algorithm for setting the gas column

Setting up a gas water heater, especially for the first time, is a rather painstaking, but short-lived process. Moreover, next time it will be much easier and faster to repeat the steps.

You need to set up a gas water heater as follows:

First, it is necessary to bring the water supply to a minimum, which is prescribed in the instructions for each column, for example, 6, 8 or 10 l / min. In this case, one should not forget that you only need to open the hot water tap. After setting the indicators, the tap is closed.
The second stage is setting the minimum gas position. This will help you make fine adjustments to the specifications of this device. At this stage, an electrician is connected. Modern electronic models have a display and are automatically adjusted.
The column can now be launched. Open the hot tap and measure the outlet water temperature. It should be 25 ° C higher on average than the inlet temperature. If the difference is significantly less or more, you should adjust the gas knob or toggle switch to the state in which the specified result will be obtained.
The handle (toggle switch) of hot water supply will also help to adjust the temperature. If its flow is increased, the outlet temperature will decrease. If the water pressure is reduced, it will become warmer.

When setting up, it is important to remember that water cannot heat up instantly, so there is no need to rush. After each parameter change, wait and allow the liquid to warm up or cool down.
Note! Experts do not recommend heating water above 55 ° C. This is because scale builds up faster at too high temperatures. Subsequently, it will clog the heat exchanger and the components of the device.
To minimize wear on the water heater, it is recommended to close the hot water tap gradually. This will prevent overloading the device's heat exchanger.

The gas column clicks - how to solve the problem

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The reasons why the gas water heater does not heat the water

Device and malfunctions of a gas column with piezo ignition

The range of Bosch gas water heaters and their technical characteristics

Hot water equipment manufactured under the Bosch trademark is a stable leader in the domestic gas water heater market. To choose the model that is optimal in performance and functionality, you should pay attention to the most basic characteristics of the equipment, represented by power, diameter of the chimney system, typical features of the chamber and ignition methods.

Therm 2000 O series

Columns of this series are equipped with a flame control sensor

Parameters and characteristics	Therm 2000 O Series Performance
The lineup	–
Productivity (l / min)	10.0
Gas consumption (m³ / hour)	2.1
Water supply pressure (bar)	From 0.15
Heat exchanger	Copper
Functional	Flame control and overheating prevention sensor
Average price (rubles)	8 100–8 400

Therm 4000 O series (new)

Columns of the Therm 4000 O (new) series are equipped with backdraft sensors

Parameters and characteristics	Values for the Therm 4000 O series (new)
The lineup	WR10-2P, S5799 and WR13-2P S5799
Productivity (l / min)	10.0–13.0
Gas consumption (m³ / hour)	2.1 and 2.8
Water supply pressure (bar)	12.0
Heat exchanger	Copper
Functional	Backdraft sensor, installation in case of violation of ventilation and smoke exhaust
Average price (rubles)	10 100–11 400

Therm 4000 S series

Therm 4000 S can be installed without a chimney

Parameters and characteristics	Values for the Therm 4000 S series
The lineup	WTD 12 AM E23, WTD 15 AM E23 and WTD 18 AM E23
Productivity (l / min)	12.0–18.0
Gas consumption (m³ / hour)	2.1
Water supply pressure (bar)	12.0
Heat exchanger	Copper
Functional	Installation of a model without a chimney is possible
Average price (rubles)	24 100–27 400

Therm 4000 O series with automatic and piezo ignition

Columns of this series are equipped with two types of ignition

Some of the Therm 4000 O series speakers are equipped with an LCD display

Parameters and characteristics	Values for the Therm 4000 O series
The lineup	WR / WRD 10/13/15 marked 2B (automatic ignition) marked P (piezo ignition)
Productivity (l / min)	10.0, 13.0 and 15.0
Gas consumption (m³ / hour)	2.1 and 3.2
Water supply pressure (bar)	12.0
Heat exchanger	Copper
Functional	Two types of ignition, limiting the temperature of hot water at the outlet; Availability of an LCD display and ignition from a built-type hydrogenerator
Average price (rubles)	20 100–27 400

Therm 6000 S series

The equipment in this series is expensive, but it is equipped with several levels of protection.

Parameters and characteristics	Values for the Therm 6000 S series
The lineup	WTD 24 AME
Productivity (l / min)	24.0
Gas consumption (m³ / hour)	5.0
Water supply pressure (bar)	12.0
Heat exchanger	Copper
Functional	Modulating burner, several protection levels, automatic electric ignition
Average price (rubles)	69 100–70 400

Therm 8000 S series

Modern model, equipped with a gas valve and a water temperature sensor

Parameters and characteristics	Values for the Therm 8000 S series
The lineup	WTD 27 AME
Productivity (l / min)	27.0
Gas consumption (m³ / hour)	0.63–5.12
Water supply pressure (bar)	12.0
Heat exchanger	Copper
Functional	Gas control valve, water temperature sensor
Average price (rubles)	74 100–77 400

The main advantage of the brand is considered to be trouble-free operation for many years and an intuitive control system. Among other things, Bosch equipment is able to function even in conditions of low water pressure, is distinguished by its compact size, attractive stylish design, ergonomics and economy in operation.

Table: comparison of models depending on the main technical characteristics and design features

Series	Model	Features of the
Therm 2000 O	W 10 KB	Automatic ignition from batteries in the form of batteries
Therm 4000 O	WR 10-2P S5799 / WR 13-2P S5799	Piezo ignition and reverse draft sensor
Therm 4000 O	WR 10-2 P / WR 13-2 P / WR 15-2 P	Piezo ignition
Therm 4000 O	WR 10-2 B / WR 13-2 B / WR 15-2 B	Automatic ignition from batteries in the form of batteries
Therm 6000 O	WRD 10-2 G / WRD 13-2 G / WRD 15-2 G	Automatic ignition of Hydrorower
Therm 4000 S	WTD 12 AM E23 S5706 / WTD 15 AM E23 S5706 / WTD 18 AM E23 S5706	Closed combustion chamber
Therm 6000 S	WTD24 AME	Increased power and high DHW performance
Therm 8000 S	WTD27 AME	Increased power and very high DHW performance

Possible difficulties

When setting up a gas water heater, the following problems often arise:

water pressure drops in the water supply system;
too low water head.

The first problem is solved only by replacing the valve or installing a pressure regulator. Otherwise, pressure drops will lead to increased wear of the device and its failure.

With the second option, the water heater will not even turn on. If the water pressure drops suddenly, you should call the city water utility and find out the reason. Perhaps this problem will be quickly fixed. If water pressure is always low in your locality, then you will have to purchase a pump that will help increase it.

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Why the gas water heater does not light up:

Red fire (lack of air mixture, as a result, the igniter is smoking);
Pops when opening the water - the pilot flame does not reach the main burner. (When gas is supplied, the ignition of the burner is accompanied by a strong pop.);
When the button is released, the igniter turns off. (Bad heating of thermocouple due to smoking) .;
In the presence of an open flame, the igniter does not ignite. (Gas does not pass through the nozzle).

Igniter cleaning tools.

Phillips screwdriver (+);
Slotted screwdriver (-);
Adjustable wrench.

Features of setting up different models of water heaters

Gas water heaters with different characteristics and features are on sale.

Some models are equipped with the "Winter-Summer" mode. In winter, the temperature regulator is set to the maximum position. In summer, the incoming water is warmer, so the handle is shifted to a minimum.

The automatic dispensers are equipped with a self-diagnosis system. If there is not enough pressure or a malfunction occurs, the device is blocked.
Note! If you were unable to independently adjust the optimal operating mode of the device, call a service center specialist.

Setting up the Neva water heater

The control panel of the domestic gas water heater Neva is very simple. The right knob is used to adjust the water flow, and the left knob is for gas. You can adjust the water temperature with both knobs.

If the left knob is set to “maximum flow”, the device will consume a lot of gas and the water will become hot. The right handle works in a similar way - if you set it to the maximum, the water flow will increase, but it will not have time to get very hot.

Adjust both handles as needed. Adjust the pressure with the right handle, and adjust the temperature with the left.
Note! The Neva water heater has a peculiarity: if you set the water supply to the maximum, and the gas to the minimum and vice versa, the device will turn off. To turn it back on, you need to close the hot water tap, and then open it again.
The Neva geyser is quite common and is considered optimal in terms of price and quality.

Correct setting of any water heater will not only significantly save money, but also allow you to use it with comfort. The water heater will last for many years and will not turn off at the most inopportune moment.

Adjustments and repair of gas water heaters Neva Lux

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Neva Transit - Troubleshooting
Faults Neva Lux 6011 and 6014
Neva 3208 - Troubleshooting
Recommendations for the operation of Neva 4510, 4511, 4513, 4610

The geyser Neva Lux 5514 is only 7 months old, and of them only three months are at work. She's still under warranty. At first, her control unit broke down, and it was she who stopped working almost immediately after switching on. He was replaced. Then the problem repeated itself. They put a new one. A week later, the valve block broke. The device now runs for 10 minutes and turns off. And he was replaced. After 2 days, it began to turn off after 20 minutes of operation. Experts say that the problem is in ventilation, but then it turns out that the problem is not in it. Just in case, I called the specialists who checked the ventilation, and they said that the draft is good. What should I do? I want to hand it back as non-repairable, but they do not give me a breakdown certificate. The store does not take back without them. I have little idea what could have broken in the valve block for the device to turn off so often. Most likely the problem is either traction or flame control. After the second repair, you could write a claim to the store, and you should have been satisfied, but this is only if the unit was installed by specially called masters from the gas service, and you have a mark on permission to accept its work. There was never a timer on the 5514, this is the prerogative of the Chinese.Just as I independently replaced the membrane and the impulse device, the Neva Lux 5611 column began to work without problems. But now it doesn't turn off. That is, even when the water supply is interrupted, the device works. What could have broken? Most likely, when replacing the membrane, you either displaced or did not install the plastic disc-ring in its place. Put it back in position and everything should work. The Neva Lux 5513 gas water heater is in operation. In order for it to work normally, I have to very often clean the heat exchanger from scale. I want to buy myself an imported model, possibly Electrolux, but it seems to me that I cannot clean it myself. Can I do the same with Electrolux? Scale does not appear due to some problems with water heaters, but because of the high hardness of the water. If you have a problem, replacing the device will not help. Can I install a Neva Lux 5514 speaker in my apartment? Yes, you can do it, but pay attention to the conventional piezo ignition model. It has good reliability and is assembled in our country. It doesn't have any electronics. The unit can work perfectly, taking air from the room and using the chimney if you had an old atmospheric model. Any room where water heaters have ever been installed is equipped with a small supply of ventilation. I am planning to install a Neva Lux 5611 water heater in my house. But I would like to accept, how long will it take for me to get warm water, and will it give in to the tap right away? It's just that you have to wait for some time with friends, and only then the water is supplied at the required temperature. Hot water supply immediately at the moment of opening the tap is implemented in models with an ignition burner. In this case, the igniter burns continuously, and it heats the water in the heat exchanger. Of the advantages in this model is that it has no electronics, it is easy to maintain, and there are no extra sensors. You can also light it with a match. The disadvantage is that gas is constantly consumed, and they are always economically profitable. Problems may also arise if the device is kindled by an elderly person. Special training will be required. The heat exchanger can also become dirty along with the combustion of the igniter. This model cannot be installed on a well. Battery powered model. It should be noted that it has a very high water consumption, so you have to wait for hot water. The presence of a large number of sensors very quickly destroy batteries. But at the same time, they are very easy to operate, they are accessible for the elderly, as well as for people with poor eyesight. The unit starts to work independently as soon as the hot water tap is opened. These columns are placed in the well. And they get dirty much longer. Launched the gas water heater Neva Lux 5514. It is new and installed in a city apartment. Her water consumption is about 7.5 liters per minute. The gas pressure is good. It is noticed that if it does not work for a day, then it can light up for more than 30 seconds. There is a spark, but there is no fire. An error was even displayed once. And it also happens that the wick is ignited, and then it goes out again, and so on in a cycle. If, nevertheless, ignition happened, then the device works without problems, does not overheat, responds perfectly to temperature changes. If the break is insignificant, no more than 4 hours, then it turns on without problems. I checked the draft, changed the battery, removed the feed tubes to the ignition wick and blew them out, and also cleaned the wick channel. This greatly improved the performance of the unit, but did not solve the problem. Is this normal, or is it still necessary to look for a breakdown? This situation is described in detail in the instructions, it is indicated there that after a long break, ignition may occur with a delay. In this model, the ignition valve is not sealed, and during the night the gas leaves the channels of the gas equipment. It will only get worse from now on. Also remember that the nozzles are not wire clean. Use either fishing line or very soft copper wire. I have a Neva Lux 5513 column installed.She began to work in December 2011. There were no problems. But now it is broken. More precisely, it does not ignite. Experts said that the problem is in the thermocouple and the pilot tube. But I just can't buy them, the delivery has been going on for 3 weeks. As a result, we have no water. You can install a thermocouple from Mora or Beretta of old models, Termite of an old model, Astra and other devices where Mertik automation is installed. And you can take the igniter tube from any installer of split systems. The main thing is that the tube is copper and of the required diameter. And rolling it up is not a problem. I have a Neva 5611 gas water heater working. After I changed the membrane, the gas supply screen to the main burner stopped working in the water-gas unit. More precisely, there is a gas supply, but it is not regulated. What could it be? You need to check all gas outlets on the heat exchanger. They are most likely clogged. Try rinsing and reassembling them. Turning on the appliance To start the gas water heater Neva Lux 5513, 5514, 5611, you must open the cold water and gas shut-off valve. After that, you need to open the mixer to supply hot water. At this moment, the ignition burner in the device should light up. The main one will start working from it. It is important to take into account that the ignition will only take place if the water flow is more than 2.5 l / minute. After starting the main oven, the pilot is turned off. For safety reasons, it is forbidden to come closer than 15 cm to the viewing windows. When you turn on the unit, which has not been in operation for a long time, or this is the first start, there is a possibility of air jams in the gas pipe. In this case, the device c can only start when the air is completely out of the system. You can adjust the water supply pressure at which the device is turned on and off using a special handle located under the casing. Turning the knob clockwise decreases the water flow, turning it back increases. When the handle is set to the extreme left position, the device turns on at a flow rate of 2.5 l / minute, and it turns off when a speed of 2 l / minute is reached. It is this position of the valve that the manufacturer proposes to adjust if the water connected to the line is supplied with low pressure. Neva Lux 5611 Turning on the device - First you need to insert the batteries. Open the gas valve. Open the cold water tap. Set the handles to the minimum position. Turn on the hot water tap. At this time, sparking occurs between the candle and the burner, then the burner is ignited and water heating begins. Visually check if the burner is on. Then adjust the water flow and temperature. From the experience of users, during the initial ignition or after an extended shutdown, the burner will ignite if all air is removed from the gas systems. Due to the fact that the spark ignition lasts about 8 seconds. After opening the tap with hot water, to prolong the ignition, the tap must be closed and then reopened. This should be done before the final exit of air from the pipes, before the burner is ignited. Cons of 5611 - Low power. Able to normally provide only one draw-off point. Produces a lot of noise during operation. However, it also has its advantages. Built-in sensors ensure safe operation. This column is able to function even if the pressure is low. Small overall dimensions. Ignition methods Columns Neva Lux 5513, 5514, 5611 are equipped with electronic ignition. For switching on, it is necessary to ensure the supply of clean air from the outside, since a lot of oxygen is consumed during the combustion process. These models are released from the factory with preset settings for a specific type and pressure of gas. If it is set for natural gas - G20, for liquefied gas for G30, with set pressures (kPa) 1.3 and 2.9, respectively.The starting algorithm will be shown on the example of 5611 models equipped with electronic ignition, powered by LR20 batteries (voltage one and a half Volts). These devices are equipped with a continuous flame modulation function. There is an observation window, gas and water supply adjustment knobs, and a digital display. To turn on, first of all, you must put the batteries in the special places for them. Contacts must be clean. Next, the gas and water supply valves are opened. By setting the knobs to the minimum value, you can turn on the unit. If the start-up takes place for the first time, or the device has been idle for a very long time, it is important to release air from the system. For this, the water supply tap opens and closes for some time. It is required to repeat until the device starts to work stably. When operating the device, it is important to observe safety precautions: it is not recommended to come very close to the viewing windows. However, you should make sure that the flame is even blue, yellow edges are not allowed. The water supply is adjusted using a special handle. If the pressure in the line is low, then it is set to the minimum position. But at the same time, and the head of the outgoing water will be small. At high pressure, the handle is set to maximum. If the water supply handle is incorrectly installed, the unit will not work correctly, and may simply go out. For a stable start, you need to set the handle in the correct position. The temperature of the supplied water is adjusted with a knob that controls the gas supply. The maximum position increases the gas consumption, but at the same time the hot water temperature is also maximum. And vice versa. Also, the temperature of the water in the tap can be adjusted by changing the flow rate of the water itself. The faster the liquid flows, the colder it is. At the same time, it is important to take into account that the device has a certain power, and if the water flow is too large, the device simply does not have time to heat it into the water. This causes the heat exchanger to overheat. And the column stops due to the error of the overheating sensor. To eliminate this problem, you will need to close and then open the water supply tap. Using a special toggle switch, you can reduce the gas flow and also increase the water flow rate. If the heat exchanger frequently overheats, lime will accumulate in it. This leads to an increase in the volume of the device, and also reduces heat transfer. To avoid this problem, it is not recommended to mix cold and hot water. Violation of these rules will reduce the life of the device. It is also recommended not to set the leaving water temperature above 60 degrees. To turn off the unit, you must turn off the taps and wait until the main burner goes out. If a long shutdown is planned, it is necessary to shut off the gas and water supply.

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How to remove soot from a heat exchanger

We wrote above where the heat exchanger is located; before starting maintenance, it is advisable to remove it from the unit, having previously shut off the gas and water, by opening the hot water supply tap (the one located near the flow heater). Then, using a gas or open-end wrench, loosen the nut securing the tube to the water unit, unscrew it a little (a couple of turns will be enough). The contents must be allowed to drain through the mixer, which is left open.

Helpful advice. Before cleaning the gas water heater from scale, prepare a special tool and means. The most convenient way to solve the problem is to use an aerosol agent to loosen boiled threaded connections. You can ask for the WD40 product at any car dealership or hardware store.

How to clean the gas column heat exchanger further:

Unscrew a pair of union nuts, dismantle the assembly.
Disassemble other elements, details that interfere with easy dismantling. Their number depends on the specific model, the design features of the column. In some cases it is necessary to remove the flue gas diffuser, in others - the ignition group, in the third - overheating and draft sensors. All parts may need to be removed.
Cover the burner nozzles with a rag to prevent soot from entering.
Take the heat exchanger to the bathroom, thoroughly clean it with a long-bristled brush to remove all soot, rinse and dry.
Return the unit to its place, reassemble the unit in the reverse order described above.

Do not forget to install new sealing rings at the pipe joints. It is not difficult to clean the gas water heater, most of the time is spent on assembly and disassembly. Work should be done strictly according to the rules. If you are not sure that you will do everything as needed, call the wizard.

Helpful advice. If the installation is clogged, you have already removed the heat exchanger, it makes sense to immediately rinse and clean the gas water heater from scale. The service will be more efficient and will not take a lot of extra time.

Before starting the unit, check it for leaks. To do this, open the water supply valve, wait for the filling of the heat exchanger from the open mixing valve. Then the feed is closed again, the assembly is inspected for the degree of permeability of its connections. In the absence of serious problems, the gas valve is opened again and the apparatus is started up for testing in standard operating mode.

Use the liquid for flushing, softening the joints during maintenance at your discretion. Chemistry simplifies the work, but it is not necessary to apply it.

Flushing helps not only to remove carbon deposits, but also to remove dust.

How to clean and how to rinse the filter

There are special products on sale for cleaning columns, but many are accustomed to using materials at hand, which are far from always suitable for this purpose. The most popular and more effective means can be identified:

hydrochloric acid (for copper tanks);
lemon;
vinegar 9%.

A solution of 500 ml of water is prepared from 100 citric acid. The vinegar cleaning liquid is made in a 1: 5 ratio. When using special products, you should read the instructions for preparing the solution on the package and act according to it. To clean the filter you need:

Turn off the water tap under the apparatus.
Disassemble the column: remove the casing, some parts (depending on the model). A water unit is required for operation, it must be easily accessible.
Place a container under the threaded connection for the liquid that will flow after it is separated. Unscrew the union nut on the left side of the water inlet.
The filter looks like a mesh. You need to get it out, rinse it, dry it slightly and put it back.You can process the filter with plain running water, but if there are calcium deposits on it, you must use a lemon solution.

Tip: To enhance the effect of citric acid, slightly heat the liquid before use.

Protection system

It usually includes three main elements:

flame control ionization electrode, which is responsible for supplying / stopping fuel supply when the burner goes out;
draft sensor that blocks operation if there is no normal draft in the chimney;
hot water heating sensor, which turns off the column if the water temperature reaches the maximum mark, which is dangerous for the heat exchanger to burn out.

These are the main elements of column protection, but there can also be additional ones, for example, a safety valve through which excess water is removed when the pressure in the system is exceeded, which is necessary to avoid malfunctions; a sensor that prevents the column from turning on if the water pressure in the system is critically low, and others.