Geyser Neva 4511: design and technical characteristics, maintenance and repair

Column adjustment:

1. Before using the water heater, ensure that the hot water flow rate is equal to the nominal value. For VPG columns 6, 8, 10, 12, this flow rate is 6, 8, 10, 12 liters per minute, respectively. For ease of adjustment, you must use the water flow knob (right handle) with the hot water tap open. (The hot water tap opens at the farthest point of water selection [only one tap opens] (bathroom, kitchen, technical room, etc.))
2. Once the nominal water flow rate is set, close the hot water tap.
3. Set the gas regulator to the minimum position (gas adjustment knob counterclockwise until it stops)
4. Open the gas supply valve to the column. Insert batteries or connect to an electrical outlet (depending on the model of your speaker).
5. Open the hot water tap - the column should turn on. The water begins to heat up. With a set nominal water flow rate at the outlet of the column, water should flow out with a temperature 25°C higher than the temperature of the incoming water. So, for example, if your cold water temperature is approximately 10°C, then the water temperature at the outlet of the column should be approximately 35°C. If the hot water temperature differs from the calculated value, then the gas flow knob (left handle) must be used to achieve the required calculated value (in our example, 35°C).
6. After this, if the set calculated value of the hot water temperature does not suit you, then you need to set the required value of the hot water temperature only using the water flow knob (right knob).
7. As the water flow rate increases, the hot water temperature decreases, and accordingly, as the water flow rate decreases, the hot water temperature rises. To extend the service life of the column, it is not recommended to set the hot water temperature above 50°C.
8. It is necessary to remember that a gas water heater is an inertial device and can reach its set hot water temperature [set using control knobs] within ~ 20 seconds, also if you used a gas water heater and after a short time you started using it again, give it some time. time to run hot water to avoid burns, because. the water in the column may have an increased temperature after the previous use of the water heater.

www.neva-tranzit.ru

The purpose of the Neva gas water heater when it is used

A gas water heater or gas water heater is used in apartments or houses that are temporarily deprived of access to hot water or are constantly experiencing interruptions in the water supply. The first models were bulky and posed a serious danger to their owners. Modern models are equipped with automation, which completely eliminates unforeseen situations during operation.

A gas water heater solves many problems: you can wash dishes or take a bath at any time, regardless of whether there is hot water at home. Remember your feelings when it is turned off in the summer, it is always inopportune and causes a lot of unpleasant minutes. It is at this moment that people begin to envy families whose homes have specialized water heating equipment installed.

Water heater repair

To troubleshoot a Neva gas water heater yourself, you need to diagnose it correctly. Over the years of operation of a water heating device, one part of the parts wears out and requires replacement, the other requires periodic maintenance. In this case, various problems arise, characterized by certain symptoms. We propose to divide all emerging problems into groups according to the following criteria:

• The burner does not light when the DHW system tap is opened;
• After working for 5-10 seconds, the unit turns off;
• the flow-through heater starts up and functions properly, but does not heat the water well;
• other problems.

Advice. Most often, in geysers, the rubber membrane of the water unit fails - it stretches, cracks or breaks. This is a consumable spare part that should always be kept in stock. A sample part is shown in the photo.

What to do if the column does not light up

When the water heater does not respond in any way to turning on the hot water, you need to perform the simplest action - check the condition of the batteries and battery compartment contacts (they may oxidize). Clean them with sandpaper, install a new set of batteries, and then try to ignite again.

Important point. The glowing display of a household appliance does not at all indicate that the batteries are fully charged, since it does not consume much energy. If the batteries are low, there may not be enough voltage to trigger the electromagnet and create a spark. According to the characteristics published on the manufacturer's official website, a set of elements is enough for approximately 250 hours of operation.

Is the power supply ok? Then continue diagnosing the gas water heater using this algorithm:

1. Make sure there is enough pressure in the pipeline to turn on the device. Perhaps someone accidentally closed the shut-off valve or control valve on the heater itself (on the right).
2. If there is a strainer on the incoming water supply, check its condition and clean it if necessary.
3. Remove the front panel of the device and open the DHW tap, observing the stem. If it does not move at normal water pressure, the reason lies in the “frog” membrane.
4. The rod has moved, released the switch button, but nothing happens? There is a problem with the electrical circuits. You need to check the microswitch and ring other wires that supply the controller and solenoid valve.

Advice. When repairing the Neva gas water heater, which involves disassembling the unit, shut off the gas line just in case.

To dismantle the front casing, you need to remove the plastic handles from the control valves and disconnect the display connector. The panel is held at the back by 2 screws located at the bottom of the device. Unscrew them and remove the casing by pulling it towards you and pulling it upward.

To check the limit switch, you need to disconnect the connector and test it using a multimeter or lamp tester. When the button is pressed, the circuit should be open. As for the wiring, it rarely fails, unless you come across a broken wire, which is easily fixed.

To replace the membrane in the Neva 4511 dispenser, remove and disassemble the water unit along with the gas unit, following the instructions:

1. Close the cold water and gas supply, unscrew both supply pipes with an open-end wrench. Also disconnect the copper pipe leading to the heat exchanger.
2. Disconnect the controller and microswitch connectors.
3. The entire water-gas block is attached with 2 screws to the flange of the burner device. Unscrew them with a Phillips screwdriver and remove the assembly.
4. Disassemble the “frog” and replace the membrane, and with it the small o-ring shown in the photo.

Note. Replacement can be done without dismantling the entire unit, but performing the operation in this position is extremely inconvenient. The described disassembly technology is also suitable for other models of geysers - Neva Lux 4510, 5611 and so on.

How to change the membrane of an instantaneous water heater, see in the next video:

There is a spark - no ignition

When sparking is noticeable at the glow plug, but the burner is inactive, you need to check the following points:

• whether the spark electrode has moved relative to the nozzle;
• whether the traction or overheating sensor that opens the solenoid valve circuit has failed;
• whether a high-voltage wire penetrates the housing;
• whether the spark has weakened due to a clogged spark plug or discharged batteries.

The electrode should be located directly above the nozzle of one of the burner sections at a distance of no more than 5 mm from it. Violation of the position of the candle is corrected by simply bending it. Sometimes it is enough to clean the end of the electrode from soot to increase the spark power.

The operation of the traction and overheating sensors is checked by directly closing their contacts. Place jumpers on each device one by one, including the water on the mixer. If a flame appears, replace the faulty sensor.

After starting the burner goes out

If the flame in the column lights up regularly along with the appearance of water withdrawal, and after 5-10 seconds goes out, then the reasons may be as follows:

• the ionization sensor does not work (does not detect fuel combustion);
• there is no draft in the chimney, which causes the corresponding sensor to overheat and open the electrical circuit;
• Maximum heating is set at low water consumption, which is why its temperature quickly reaches 90 ° C and the overheating sensor is triggered.

The last 2 faults do not depend on the water heater and are eliminated by the user individually. Sometimes the damping effect is created by an overstretched membrane: at the first moment after water is supplied, it moves the rod, and when the pressure in the pipe normalizes, it releases again.

The flame sensor fails for three reasons:

1. The electrode is coated with a thick layer of soot and requires cleaning.
2. The “nose” of the device has bent downwards due to prolonged exposure to temperature and needs to be slightly bent upwards, as demonstrated in the video.
3. The device has broken down and needs to be replaced.

The opposite situation also happens: the hot water tap is turned off, but the burner continues to work. There is a jamming of the rod here, which can be eliminated by disassembling and cleaning the water-gas block.

How to eliminate low heat

There are two reasons for this phenomenon: clogging of the burner nozzles and deposits in the heat exchanger tubes. In the first case, the blue color of the flame changes noticeably to yellow or reddish, and the gas burner device begins to smoke. To fix it, it is advisable to call a gas service technician, but if necessary, you can do it yourself:

1. Turn off the gas supply.
2. Dismantle the burner by unscrewing the clamping nut on the gas pipeline and the 4 screws shown below, not in the photo.
3. Blow dust off the assembly using an accessible method, and then wash with a weak soap solution.
4. Dry the device and reassemble the column in reverse order.

If the burner operates properly, but the water does not heat up, then you need to flush the heat exchanger. The manufacturer provides simplified dismantling of the element: drain the water from the column, unscrew the two connecting nuts on the tubes (shown in the photo with green arrows) and the 2 mounting screws on top. After this, immerse the heat exchanger in a bucket of citric acid solution (100 grams per 1 liter of water) and wait until it eats away the scale. After thorough washing and drying, reinstall the element.

Advice. When reassembling the heat exchanger, it is advisable to change the rubber gaskets located inside the union nuts.

Operating principle of the Neva gas water heater

The operating principle is based on igniting the burner at the moment the hot water tap is opened anywhere in the apartment or house. To make it more clear, let’s look at the process of heating water and installing a Neva gas water heater using an example:

1. When the mixer is turned on, a special membrane is activated in the water unit, which moves the rod connected to the gas valve.
2. Thanks to this, fuel is supplied to the burner, which is immediately ignited by an electrode or igniter. The flame is adjusted manually using a faucet mounted on the front panel or using an electronic control.
3. Water enters the heat exchanger, and its heating begins in the coil. This principle prevents the occurrence of evaporation on the tubes due to the temperature difference between the water and the burner flame.
4. Water heated to a comfortable temperature is supplied to all water points of the house or apartment. After a person turns off the tap, the frog membrane of the Neva geyser pulls back the pipeline part, the gas supply is stopped by the valve, the burner goes out, and water heating stops.

Modern models provide ignition using a remote control with a battery. Almost all geysers operate on this principle.

The geyser device includes: water unit, ignition system, flame sensor, igniter and safety valve

Setting details

When setting up a gas water heater, you need to remember that the liquid cannot reach a comfortable temperature instantly. Don't try to do all the settings for a few minutes - it will take quite a long time. After each stage, you will have to start all over again, namely, drain the waste water and let it heat up or cool down with fresh water. In general, such manipulations can last for half an hour, and sometimes longer. An experienced professional will take much less time.

When setting up equipment from different companies, for example, a Neva gas water heater, you may encounter two difficulties:

• fluid pressure;
• weak water pressure that does not cause a reaction from the device;

Blood pressure problems

Pressure fluctuations can be caused by a variety of conditions. When faced with this, there is no need to panic; the situation can be easily solved by replacing a worn valve or purchasing a special pressure regulator. This malfunction can cause serious damage and accelerate equipment wear.

Replacing the membrane in a gas water heater

Main technical characteristics of geysers "Neva"

A water heater is a water heating equipment, and you cannot save money when choosing it. Safety is more important here than immediate profit. An overview of the main technical characteristics of the water heater is presented in the video:

Performance

The product data sheet indicates the capacity in kW or l/min. Knowing the number of water points in an apartment or private house, you can choose the optimal model. To do this you need to perform a simple calculation:

• one tap flows 6−7 l/min;
• There are two taps installed: in the kitchen and in the bathroom. In order to be able to use both mixers at the same time, you will need a water heater with a capacity of 13-14 l/min.

The table below shows the optimal performance of the Neva gas instantaneous water heater depending on the number of mixers. With its help, you can accurately determine the type of equipment needed in your home.

Column connection diagram for 2 water points

Maximum pressure

Neva water heating devices can be used correctly if two parameters related to the water pressure in the system are observed:

• the lowest pressure at which the column will turn on;
• the maximum pressure that the heat exchanger can withstand.

For a flow-through device, the first indicator is extremely important, since at low pressure the water heater may not turn on at all. This is especially true for owners of old houses in which all utility networks have long been worn out and the water pressure is extremely low. The optimal pressure is 0.15 bar. Maximum parameters are also important, since water hammer is possible in the water supply, which leads to an increase in pressure. Its values ​​can vary between 11−12 bar.

The minimum water pressure should not be lower than 0.15 bar

Ignition type

The manufacturer produces water heaters with different ignition options, and the cost of the equipment depends on this:

• manual. It is installed in inexpensive and simple models. Ignition is done manually with matches;
• piezo ignition is an electromechanical match that is included in the system. In this version there are practically no electronic parts; ignition is performed using a button on the outer panel of the column;
• electric ignition - it is installed in all modern models. If there is a choice, of course, preference should be given to this option. It can be non-volatile and dependent.

You should know this! If the power in your apartment or house is often turned off, you can install an uninterruptible power supply.

Column "Neva-5514" with electric ignition in white and silver

Power modulation

The device is responsible for the intensity of the flame in the heat exchanger unit, depending on the pressure of the cold water that enters the water heater. It not only reduces fuel consumption, but also increases the comfort of using water, in addition, it will prevent burns.

Type of heat exchangers

Heat exchangers can be classified depending on the material they are made of:

Copper heat exchanger for water heater

Type of combustion products removal

Columns can be classified according to the type of removal of combustion products:

• the first type is equipment with a chimney, for which combustion products must be discharged into the shaft or directly to the street;
• the second type is parapet or chimneyless. To remove combustion products, it is necessary to make a hole in the outer wall of the building.

The chimney from the gas water heater must fit tightly to the wall

Security systems

Modern water heaters must be equipped with the following devices:

• ionization detector , it monitors the flame and turns off the column if it goes out. Some models have a built-in combustion sensor. Ideally, both devices should be available;
• valve , which protects the system in the event of an emergency pressure release. It releases excess pressure if it is exceeded. This especially plays a role in storage water heaters;
• detector , which determines the speed of liquid flow and automatically turns on the burner if the hot water tap is open;
• draft detector , which turns off the column if the draft in the chimney is insufficient. This option prevents the room from filling with carbon monoxide;
• detector , which detects low water pressure. The water heater will not turn on if there is insufficient pressure, therefore, this will prevent premature burnout of the heat exchanger;
• sensor , which determines the overheating temperature of the liquid, when the specified parameters are reached, the device will be turned off.

Special handles can be used to adjust the comfortable mode of use.

Why did the column stop regulating the temperature?

A common problem with cheap water heaters that have been operating in hard water conditions for some time. After 5-6 years of normal operation, a breakdown occurs: the inability to change the temperature of the water in the column. The reason is the failure of one of the regulators: flow or gas. The automation of Chinese speakers is “treated” by replacing the boiler.

In gas instantaneous water heaters with precise control of water temperature, the cause of the malfunction lies in the fact that the output sensor has burned out. The problem is solved by replacing it. The sensor is relatively inexpensive; with the help of a specialist, it can be quickly dismantled and a new one installed.

In speakers with a temperature controller and electronic control, the inability to set a comfortable mode may be due to software failures. To ensure that the water is not very hot, the software will need to be re-flashed.

Model range of geysers "Neva"

Currently, the product line includes a wide range of gas water heaters, varying in performance, type of ignition and other technical features. The cost of the equipment is available to all consumers. Let's look at the more popular models of flow dispensers from the Neva series.

Model “Neva 6014” is an ideal solution for an apartment

"Neva-4510"

Such a water heater is suitable for servicing 2 water points at the same time, this is quite enough for an ordinary city apartment. Consumers note the high quality of the equipment at a low cost.

Model "Neva-4510"

"Neva Lux-5514"

The main feature of the Neva Lux-5514 model is the instant supply of hot water. The equipment turns on automatically when the tap is opened. The water heater is made of high-strength materials, which significantly extends its service life. According to consumer reviews, the Neva Lux-5514 geyser offers increased power and quality at a reasonable price.

Model "Neva Lux-5514"

"Neva-4511"

The Neva-4511 geyser, according to consumer reviews, is named a sales leader; both buyers and service departments love it. In the operating instructions you can see some interesting functions: battery-powered electric ignition, automatic switching on when the hot water tap opens, security system alerts.

Model "Neva-4511"

"Neva-4513"

Users also note the simple controls and accessible settings in the Neva-4513 gas water heater. And a good price-quality ratio. This speaker is universal; it can be installed both in small private houses and in ordinary apartments.

Model "Neva-4513M"

"Neva-3208"

This model is in demand, despite the fact that it is already almost 10 years old. Simple content, budget cost, and good technical parameters made it quite popular. In the apartment, it served 1 water point, and users had to make a choice. Today, gas services only repair this model of water heater.

Model "Neva-3208"

"Neva-Transit"

This model also won the love of users. Its main feature is that the water heater operates under conditions of unstable pressure. In addition, one can note the reliability and simple operation.

Model "Neva-transit"

Operation of the geyser Neva Lux 5611

Launch of the gas water heater Neva Lux 5611

To turn on and start the gas water heater Neva Lux 5611 you must:

— install batteries in the battery compartment;

— open the shut-off valve on the gas pipeline in front of the device (if it was closed);

- open the cold water shut-off valve on the water supply installed in front of the device (if it was closed);

— turn knobs 1 and 2 to the positions of minimum gas and water flow (see Fig. 2a);

When first ignited or after a long break in the operation of the device, the burner will ignite only after air has been removed from the gas lines.

Since spark discharges last about 7 seconds after turning on the water, to continue ignition it is necessary to close the hot water tap and then open it again. This procedure must be repeated until the air is completely released from the communications and the burner is ignited.

After starting the Neva Lux 5611 gas water heater, it is necessary to visually check the operation of the burner through the inspection window. The flame should be blue, even and free of yellow smoky edges, indicating clogging of the internal channels of the burner sections.

Methods for adjusting the degree of water heating

The water flow through the device is adjusted using knob 2 (Fig. 2): turning the knob to the “Minimum flow” position reduces the water flow, turning the knob to the “Maximum flow” position increases the water flow.

In this case, in the “Minimum flow” knob position, the water heater is turned on at a water flow rate of at least 2.5 l/min, in the “Maximum flow” position – at a water flow rate of at least 6 l/min. In intermediate positions of handle 1, the water heater is turned on, respectively, in the flow range of 2.5...6 l/min.

If the inlet water pressure is low (with a small water flow provided by the water supply network), it is recommended to leave knob 2 in the “Minimum flow” position to turn on the device. In this position, it is possible to obtain low and medium flow rates (2.5...5 l/min) of hot water at the outlet of the device.

To obtain a large amount of warm water at the outlet of the device at normal input water pressure (at a water flow rate of 6 l/min or more provided by the water supply network), handle 2 should be moved to the “Maximum flow” position.

Rice. 2. Adjustment knob positions

If the flow of water flowing through a working gas water heater Neva Lux 5611 is low, turning knob 2 to the “Maximum flow” position may lead to the burner going out.

The burner can also go out when the flow rate of the hot water tap decreases or when the inlet water pressure drops. To make the burner work again, you need to turn knob 2 to the “Minimum flow” position or increase the water flow with the hot water tap.

The water temperature is adjusted by turning knob 1 for adjusting gas flow (Fig. 2): turning the knob to the “Maximum flow” position increases the gas flow and water temperature at the outlet of the device, turning the knob to the “Minimum flow” position reduces the gas flow and water temperature at the outlet apparatus.

It is also possible to regulate the water temperature at the outlet of the device by changing the water flow using a hot water tap or handle 2: an increase in water flow leads to a decrease in its temperature and, conversely, a decrease in water flow leads to an increase in its temperature.

The water heating temperature is limited by the heating capacity: with high water flow, especially in winter, the water leaving the device may have an insufficient temperature even at maximum gas flow. In this case, to increase the water temperature, it is necessary to reduce the flow of water passing through the water heater.

With low water flow (in knob position 2 “Minimum flow”) and high gas flow (in knob position 1 “Maximum flow”), the water in the heat exchanger may overheat and, as a result, the burner will be turned off by the automatic control system of the gas water heater.

To turn it back on, you must close the hot water tap and then open it again. To avoid overheating of water, it is necessary to reduce the gas flow with handle 1 or increase the flow of water flowing through the device with handle 2 or the hot water tap.

Overheating of water in the heat exchanger leads to noise during operation of the Neva Lux 5611 geyser and causes the rapid formation of scale in the heat exchanger pipes and narrowing of their flow area, which over time will lead to a decrease in the efficiency of the unit and a weakening of the hot water jet.

Therefore, to reduce the temperature of the water leaving the device, it is not recommended to use a mixer, diluting hot water with cold water.

If the water in the water supply is soft, you can use a mixer to regulate the degree of water heating.

When there is hard water in the water supply, to regulate the degree of water heating, it is recommended to use the gas flow regulator knob and change the water flow using a hot water tap.

It is unacceptable to use a water mixer with hard water, since overheating of water in the heat exchanger leads to faster scale formation in the heat exchanger pipes and their clogging, which over time can lead to a weakening of the hot water stream and a decrease in its heating temperature.

The amount of scale formed is proportional to the increase in the temperature of the water leaving the apparatus.

To reduce the intensity of scale formation, set the gas tap control knob to a position that ensures water heating no higher than 60C.

Replacing batteries

Batteries must be replaced while the device is not working.

When the batteries are discharged, it is necessary to install new (2 pcs.) size LR20 into the battery compartment, in accordance with the polarity indicated on the inside of the compartment cover.

A sign of battery discharge is the absence or significant weakening of spark discharges between the spark plug and the burner after water begins to flow through the apparatus (at a flow rate of at least 2.5 l/min).

Main problems and repairs of the Neva gas water heater

The design and equipment of water heaters are quite simple, but they also need repair over time. Sometimes breakdowns can be fixed on your own. However, if the skills are not enough, it is better to contact the service department. We will tell you how to repair the main faults.

You should know this! The manufacturer provides 2 years of warranty service, so you should first contact the service center, only after this period you can repair something yourself.

Water heater repairs must be carried out by service departments

Column "Neva" does not light up

If a modern Neva gas water heater does not light up, it means that the safety sensor has tripped. The igniter must function continuously and, if necessary, ignite the burner. If this does not happen, it means that the devices have turned off the system to prevent the accumulation of carbon monoxide. In this case, it is necessary to replace the thermocouple.

The flame in the burner should burn evenly and equally

Why does the Neva gas water heater not turn on?

If the tap does not supply hot water, then the problem must be looked for in the equipment. The reasons why the Neva dispenser does not light up may be the following:

• the batteries are discharged, you can check whether they were installed correctly;
• clogging of the chimney and, as a result, lack of draft. From the apartment you can clean it yourself, but from the street side you should invite utility workers;
• There has been a leak in the gas water heater unit or connections. It is necessary to unscrew the system and replace the sealing gaskets;
• insufficient water pressure, you need to check the filters and clean the pipes that supply water to the column.

All other problems can only be fixed by professional specialists who are certified to work with gas equipment.

You can replace the water hose gaskets yourself

Where can you find spare parts for the Neva gas water heater?

If necessary, spare parts can be purchased independently at water heater sales points, dealership centers or service centers. If such a part is not available, they can bring it to order. Alternatively, contact the factory sales department directly. They will tell you where the required part was shipped, or accept a request for its delivery.

It is difficult for an unprofessional technician to understand the spare parts for a water heater

Peculiarities

The Neva 4510 geyser evokes conflicting feelings among consumers. It is made by the Baltgaz concern, and there are no cheaper offers in its line of gas-fuelled instantaneous water heaters. But at the same time, components supplied from China are used in production. The name of the model briefly describes its technical characteristics, which correspond to those included in the product passport. Thus, the numbers “45” indicate the series, “10” the amount of water heated per minute, and sometimes the letter “M” is also present, indicating deep modernization.

The specificity of the system in comparison with other products under the Neva brand is that it is powered by a pair of batteries. Smooth modulation of fire is not provided. That is, a change in water pressure in the supply channel will be reflected in its temperature after heating. You will have to deal with this problem manually. The front panel is equipped with a pair of control knobs - the blue one is responsible for the flow of liquid, and the red one for the achieved heating.

The space between the handles is equipped with a digital screen showing the existing temperature. This allows you to minimize the risk of error.

The column, like other Russian-made models, is equipped with:

• draft sensor;
• fire presence indicator;
• thermal sensor;
• gas control equipment.

The column has an efficiency of 88% and is designed for natural gas pressure from 1274 Pa. For liquefied fuel this figure is 2940 Pa, the nominal consumption value for 60 minutes is 1.95 and 0.77 cubic meters, respectively. m. For the device to function normally, water must be supplied to it with a pressure of 300 kPa or more. If it heats up to 25 degrees, you can get over 8 liters of liquid. With stronger heating (40 degrees), the consumption drops to 5.3 liters.

Neva 4510 reaches a height of 0.65 m, a width of 0.36 m, and a depth of 0.21 m. The weight of the system does not exceed 10.4 kg. Prevention of excessive water heating is provided. Control of the presence of flame in the burner is realized thanks to the ionization effect. The design also includes a viewing window.

Reviews from real consumers about the Neva gas water heater

Before purchasing a gas water heater, you should definitely read real consumer reviews. They are compiled after the device has been in operation for some time, and perhaps people were not satisfied with some aspects of its operation.

Review of the water heater "Neva-Lux 5111":

More details at: https://otzovik.com/review_3675937.html.

Review of the water heater "Neva-4513":

More details at: https://otzovik.com/review_6086821.html.

Review of the water heater "Neva-4510M":

More details at: https://otzovik.com/review_3308303.html.

Types of devices

A geyser is a water heating device. Gas is the main source of energy.

The main criterion for choosing a geyser is the characteristics of the device, its quality and price.

Conventionally, according to technical characteristics, speakers can be divided into types:

• by type of ignition;
• by type of chimney;
• by power (on which the volume of heated water depends);
• on safety;
• to size;
• for additional functions.

As for the quality of the product, the popularity and fame of the brand can be decisive. On the domestic market, NEVA is a quality manufacturer. This is confirmed by many reviews of the product. The quality of components and assembly guarantees the reliability of the device.

Ignition of the column

By igniting the column we mean igniting the gas, namely the method in gas columns is:

• manual ignition;
• piezo ignition;
• electronic;
• microturbine.

Manual ignition is a rarity for modern speakers. Older models required matches to ignite the gas. Today such models are rare.

Piezo ignition. By analogy with piezo electric stoves, to ignite the gas you need to press a button on the column panel. This method is still used in modern models.

Electronic. The most convenient and popular way. Reliability and economical gas consumption make such models a little more expensive. By analogy with a car, a spark is created by a small battery; batteries are often used. The NEVA 4511 column belongs to this model range.

As for microturbines, the current in them is generated by a hydrodynamic generator controlled by a water flow. The cost of such copies is much higher.

Columns with electric ignition are easy to use. The gas is ignited automatically when you open the water tap, thereby saving gas consumption.

Principle of operation

The device is designed to burn both natural and liquefied gas. The second function is implemented only after changing the jets. The maximum power in peak mode is 17000 W. During initial startup, the ignition element is ignited manually. To do this, press the keys that create a spark and allow gas to pass through.

As a result, the electronic control unit initiates combustion of the fuse. The small light will operate continuously, even when the tap is closed. If a flow of liquid is directed through the water unit, the automation starts the common burner. Almost immediately, a stream of hot water is sent from the water intake.

The column is equipped with an electronic ignition system, which receives current from a pair of R20 batteries. The electronics are connected to the battery compartment via a microswitch, which is triggered by the passage of water through the regulator. As a result, for the consumer, putting the dispenser into operation comes down to the very opening of the tap from which hot liquid flows. The water circuit valve opens the flow of gas to the main burner only when water flows, and it also initiates the activation of the solenoid valve.

Type of combustion products removal

Atmospheric speakers are available for sale. They discharge combustion waste directly into chimneys.

The branded range of NEVA speakers is represented by VPG models from series 10 to 14, in various modifications.

Turbine columns are not connected to the chimney; they take oxygen for combustion from outside and throw combustion products there. They are intended for installation on any floor of a building in houses without chimneys. The higher price is justified by the ease of their use, since chimneys are much more expensive to build.

Power

The power of an instantaneous water heater is determined by the volume of water it can heat. To heat large quantities of water you will need a powerful unit.

Based on their power, speakers can be divided into:

• power from 17 - 20 kW (small speakers);
• from 20 - 26 kW (average);
• from 26 – 28 (high power).

The NEVA column model 4511 consumes 21 kW, but produces up to 11 liters of hot water per minute. For an approximate determination of liters per minute, take a look at this table:

The NEVA 4511 column is suitable for two water collection points. If you need to use more points, it is better to take a column with more power. The NEVA 4511 column is the most compact of the entire series and is suitable for small rooms. More powerful NEVA speakers from the Lux series.

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.

• How to set up (adjust) a gas water heater?

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.

Safety in use

A gas water heater is a high-risk device.

To simplify use and prevent various accidents, the speakers are equipped with additional sensors. Among which:

1. Ionization sensor. If the fire goes out, the sensor cuts off the gas supply.
2. Additional temperature sensors. They are triggered if the ionization sensor is not working.
3. Heating sensor. Monitors the temperature of the flow heater, i.e. regulates the temperature of the entire device, as well as the heating elements.
4. A water pressure sensor, the main task of which is to turn on or off the gas supply automatically when drawing water.
5. Temperature difference control sensor. A device for increasing and decreasing the water temperature, in case someone additionally opened the water, is implemented in newer Neva Lux models, model 4514, 4513.
6. Gas and water pressure sensor. Control the supply of water or gas to the column. If you open a water tap and turn it off, the column will not supply gas automatically.
7. Safety valves. Shut off the water or gas supply in case of high pressure in the system.

Adjusting the water temperature

Open the mixer and evaluate the heating temperature of the water flow. It should be 25 degrees higher than at the entrance. Keep in mind that the gas boiler does not heat the water immediately, you need to wait a little. Use the gas lever to adjust.

You can also adjust the temperature using a water toggle switch. By increasing the flow force, you reduce the heating temperature, and vice versa.

Experts do not recommend heating above 55 degrees. This negatively affects the operation of the device, since scale is actively deposited.

The settings take some time, so you don’t need to wait for the results right away. After each stage, you need to drain the water and let it heat up again to check the accuracy of the indicators. Operation may be hampered by reduced pressure in the system.

If the device runs on liquefied gas and there are problems with pressure, do this:

• Remove the device casing.
• Loosen the locking bolt and measure the readings with a pressure gauge.
• Remove the seal from the adjustment screw.
• Start the boiler.
• Set the maximum values, unscrew all hot water faucets.
• Set the required pressure.

Some models are equipped with an additional “Winter-Summer” mode. The heating power of the water in the column depends on the temperature of the inlet flow. In winter, the regulator is set to the “maximum” position - maximum heating. In summer, the inlet temperature is higher, so the value is “minimum”. This saves resources.

Problems with poor water pressure can be corrected by checking. If the equipment has already been in operation and you decide to reconfigure it, but there is no pressure:

• Check the rubber membrane. Its operation depends on the pressure in the line. The membrane bends and the gas valve is activated. When it wears out or becomes deformed, the gas supply does not start and the burner does not light up. Replace the membrane.
• Mesh filter. Located at the entrance to the water reducer (block). It becomes clogged with small debris from the water supply, so the pressure may decrease. Clean the part.

Features of domestic systems

Geyser Neva Lux
Advertising newsletters often focus on local conditions. The Neva 4511 column is fully adapted to our water supply systems.

This means that when the gas pressure drops below 13 mBar, the column continues to operate.

At the same time, the automation does not allow turning on the device at low pressure. Gas supply in our territorial latitudes is a secondary problem. The main task is to control water pressure.

An important advantage of the Neva and Neva Lux columns is the replaceable heat exchanger. Instead of buying a new speaker, it is enough to purchase an accessory part. It costs from 3,500 to 4,500 thousand rubles, depending on its type. New models are equipped with a copper heat exchanger; this material is resistant to corrosion, but salt and scale deposits remain a problem.

heat.guru

Preparing to set up a water heater

Adjusting the gas water heater does not take much time, but requires careful approach and attention. The painstaking process can raise a lot of questions for an unprepared person. Before adjusting a household appliance, you need to turn off the water flow to a minimum, because these are the indicators provided for in the operating instructions . Neglecting these instructions leads to the fact that all subsequent settings will not be accepted by the system or will lead to a result far from the expected one.

In most cases, the required flow rate is equal to eight, ten or twelve liters, but there are some deviations, both upward and downward.

It is important to consider that it is possible to adjust the geyser to exact values ​​only when using one mixer with hot water.

After completing the described procedure, turn off the supply valve and proceed to the next step. As for liquid, it is necessary to set the minimum value for gas. These settings are necessary to bring the water heater to the nominal values ​​​​prescribed for it.

At this step, it is recommended to connect the electronic equipment necessary for the geyser. Contrary to expectations, this is one of the simplest operations. It includes:

• connection of several wires;
• installation of batteries or consumable batteries used to ignite fuel.

New models may be equipped with sophisticated equipment with screens and sensors. Such a system independently performs all settings and does not require user intervention.