How to Remove the Batteries from a Gas Water Heater

How to change the batteries in a gas boiler Neva?

In automatic heaters there is no igniter. When igniting, a spark is produced, fed directly to the main burner. Power supply is provided by batteries which are installed inside the body.

Gas water heaters with hydrogenerators are expensive, sensitive to pressure drop in the pipeline and water quality, so they have not yet become widespread and do not deserve popularity among domestic consumers. About 80% of all water heaters sold are battery operated. There are special adapters that allow you to connect the boiler to an ordinary household network.

Battery-powered water heater operating principle

The need for electricity for automatic gas boilers is associated with several main functions and tasks:

The principle of battery-operated gas boilers is as follows. when you open the tap of the hot water supply, the water enters the reducer. The pressure created drives the rod, which opens the gas supply and simultaneously sends a signal to the ignition unit and turns on the display.

Batteries in a gas water heater serve as source of energy. Over time, the cells run down, resulting in malfunctions: prolonged activation and failure.

How long the batteries in the speaker last

It all depends on the serviceability of the heater and the properly adjusted settings. Battery-powered gas stoves with automatic ignition can last for about 6 months without the need to replace the power supply. Of course, this is only possible if high-quality elements are used.

If the batteries quickly run down, the problem is most likely hidden in the ignition unit malfunction, or in the electrodes that produce a spark, located in the wrong position. In addition to the described leads to a rapid discharge of batteries can:

  • High humidity in the room;
  • contamination of bypass valve and sticking of solenoid valve;
  • oxidation of electrical contacts (characteristic sign: batteries get very hot);
  • clogging of nozzles of the main burner.

The frequency of battery replacement is also related to how often the water heater is turned on. If the boiler is used only for showering, the power will last at least 4-8 months. If the tap is constantly opened, “pulling” the heater, even when there is no need for DHW, the power supply elements will run down in 1-2 months.

As a rule, the battery in gas water heaters of flow type are located in the lower part of the body. For easy replacement of the elements in the construction of the device there is a small hinged door with a latch. The battery is installed in a special plastic container, to which the metal contacts are connected.

Breaking of the electric circuit between the microswitch and the control unit. Also, the malfunction of the gas water heater, associated with the absence of a spark can be caused by a broken circuit between the switch and the control unit. To do this, check the terminals that connect them and the switch wires. Possibly oxidation of the contact points.

Which batteries are required

Before we talk about batteries or, more correctly, galvanic cells, let’s find out what they are needed at all for the gas column. So, let’s assume that we decided to take a shower or wash the dishes. We open the hot tap and cold water begins to flow through the heat exchanger of the hot water heater. The flow of water in the mains acts on a mechanical rod, which opens the gas valve, injecting gas into the burner. At the same time the same rod turns on the control system, which briefly starts the high-voltage converter.

Как заменить батарейки на газовой колонке. Replacement of batteries on the gas water heater.

The converter, in turn, creates a powerful electrical spark between the electrodes. The latter are in close proximity to the burner, so the gas is ignited. After that a special combustion sensor tells the control and ignition system that the heater has started. If the ignition attempt was unsuccessful (the temperature sensor is silent), the control unit retries the ignition.

So, we already have two assemblies that need power supply: the control unit and the high voltage converter. Although they work only during the startup of the water heater, but they are very ravenous. In addition, there is another consumer. an electronic thermometer with a display that shows the temperature of hot water. It works and consumes power until the hot water tap closes and the speaker turns off.

Specialist in repair, maintenance of electrical and industrial electronics.

All of the above applies to gas columns, which do not require connection to the mains. All they need is gas and water.

So, we found out what you need batteries for the speaker. Now let’s find out exactly what you need and which is better to choose. Almost all gas water heaters operating according to the above described algorithm, are equipped with two galvanic elements of size D. the so-called “big barrels”. The size of such a battery is 61 mm (height) by 34 mm (diameter). Output voltage. 1.5 В.

We’ve got the size, but of course that’s not the main thing. the salt and alkaline galvanic cells, as well as batteries, are manufactured in this size.


Alkaline cells are inexpensive, but have a small electrical capacity and a short life span. A set of salt batteries is enough for 2-3 weeks. After that, they will have to be replaced. And their lifetime little depends on the manufacturer, except for those who make blatant fakes. The designation of these batteries is R20, where R is salt, 20. size D.

An alkaline or alkaline cell is much more expensive than a saline cell, but has a high electrical capacity and a long life. Alkaline battery packs have enough energy for about six months. The designation of these batteries. LR20, where LR. alkaline, 20. size D.

Rechargeable batteries, unlike batteries, can be recharged, but they cost several times more expensive than alkaline batteries. Also, their voltage is not 1.5, а 1.2 volts. So the voltage of a set of two batteries would not be 3, but 2.4 В. However, almost all heaters work perfectly well at this voltage. Service life of a set of these batteries. 5-6 years (they, of course, have to be recharged regularly). Only nickel-metal hydride batteries are available in size D. The name of these batteries is HR20, where HR is nickel-metal hydride battery, 20. size D.

This is all the information you need for the battery type. Let’s discard salt sources at once. they will have to be replaced so often that the low cost ceases to be an advantage. We will use them only as a last resort. Alkaline cells are in principle the best choice. They have a pretty decent price/life ratio. The best proven LR20 batteries from these manufacturers:

Rechargeable batteries are also not a bad solution, but you should remember that you will need to buy a battery charger to run them. In addition, you should make sure that our model of gas water heater will work with confidence at slightly lowered voltage (see AC power supply). above).

Overview of the possibilities of D-size batteries

Power supply for the gas water heater instead of batteries

Gas water heater. the “heart” of the water heating system of a private house or apartment. Servicing this type of equipment requires certain knowledge and skills, because the right? You do not know what batteries are needed for the gas water heater and how to replace them properly?

We will help to deal with these issues. in the article we will consider the types of batteries used for the speaker, and detailed instructions on how to replace.

Let’s also analyze for what reasons they become unusable, and how to choose new ones.

The publication is packed with illustrative photos and videos that will solve a number of operational problems associated with the use, selection and replacement of power sources.

Peculiarities of batteries for the speaker and the nuances of selection

The work of modern models of columns is based on electricity. The power, thanks to the spark produced, provides the ignition of the flame needed to heat the water, as well as guarantees the functioning of the display, which displays the current temperature and other information.

It is noteworthy that ignition in the earliest gas water heaters was carried out manually by a rather dangerous method. with matches. Subsequent modifications of water heaters were equipped with a more ergonomic in operation piezo element, batteries or hydro generator. There are also models of columns with line ignition.

Nowadays the most popular speakers are those with battery ignition. The models of analogues with a hydro, replacing the batteries, are in much less demand. The best gas water heaters, popular among customers, we have listed in this article.

The principle of operation of the hydrogenerator is quite simple: the water flow rotates the blades, which produces an electrical impulse

Significant disadvantages of columns with a hydrogenerator:

  • the cost of such equipment exceeds the price of columns, working on batteries;
  • The mechanism and blades of the generator are extremely sensitive and often suffer from poor water quality, so they require regular cleaning;
  • Plumbing pressure may not be enough to generate a strong spark.

Battery-powered gas heater ignition is quite simple.

Thus, in the speaker with an igniter the process is as follows: a small amount of gas is fed to the igniter, and then with the electric pulse generated by batteries, it is ignited.

An ionisation sensor detects the presence of a flame and only then does gas flow to the main burner, where it is ignited gently by the igniter.

The units with direct ignition immediately apply gas to the burner, which is ignited by an electrical impulse created by batteries.

Discharged batteries can cause the heating appliance to malfunction. Insufficient charge level leads to continuous switching on or complete cessation of function

The need to replace the batteries in the gas heater can be evidenced by a popular “symptom” of improper operation of the equipment: the water heater is started idle several times in a row, making the characteristic sound of ignition. Some models are equipped with an indicator to tell you when the batteries are worn out.

What kind of batteries are used in speakers?

For proper operation of the gas heater requires a power supply with a total voltage of 3 volts. Therefore, batteries for the water heater stand out against the more familiar finger and mini-battery modifications. These are the thicker “kegs” of class D, each with a voltage of 1.5 V.

Actually there are two kinds of batteries on the market: D-LR20 and D-R20. They differ from each other in price and in the “filling”: inside the battery there can be salt or alkali.

D-R20 salt batteries are steadily losing ground, which is more of a plus than a minus. Cheaper power supplies are famous for extremely fast discharge rate. Therefore, even a low attractive price does not make the purchase of the D-R20 worthwhile.

D-LR20 alkaline batteries are more expensive, but they do not need to be replaced as often and are good for up to six months. A salt power source will last a couple of weeks at best.

To save money on scheduled replacement of batteries, it is worth buying rechargeable batteries. Used batteries and rechargeable batteries should not be discarded with household waste, since power sources require special disposal.

Comparison of the appearance of batteries of different classes. Class D batteries look really impressive compared to other categories of power sources

The NiMH D/HR20 NiMH battery versions are best suited for gas-fired boilers. However, you should definitely make sure that each battery has a voltage of 1.5 V before installation.

With observance of operating rules such batteries will last 5-6 years, gradually losing their capacity. But it is worth remembering that you have to buy a battery charger separately.

Choosing the right power supply

The most win-win option not to make a mistake in choosing goods. to go to the store with old batteries and buy similar parameters of batteries.

When choosing, always consider the recommendations of the manufacturer and pay attention to the appearance of the goods when buying. However, even such an approach can not keep you from buying low-quality units

Additionally, you should pay attention to the following nuances:

  • appropriateness of the expiration date;
  • The integrity of the packaging;
  • absence of abrasions and mechanical damages on the body;
  • the correct shape of the power source.

The abundance of fakes on the market and the storage of products in improper conditions without the proper temperature regime significantly affect the life of batteries and accumulators.

Power supplies bought at the nearest junction are unlikely to be certified and reliable products. So buy your batteries from official offline and online retailers. After all, the use of any damaged batteries is fraught with fires and damage to equipment.

The power supply for the gas-fired units. batteries and power supply

Automatic flow-through boilers, using gas, have a system of ignition of the main burner, which requires electricity. Power is supplied in several ways. Power supply and batteries for the gas heater are used in most models of water heaters. Less common is the equipment, which uses a hydrogen generator to produce a spark.

The role of batteries in the speaker

Ignition in the first hot water heaters was achieved with matches. In the next generation of appliances, a piezo element was used to ignite the wick, which in turn is used to ignite the main burner.

In automatic speakers there is no igniter. When igniting, a spark is produced, fed directly to the main burner. You get power from the batteries inside the case.

Gas water heaters with hydrogenerators are expensive, sensitive to pressure drop in the pipeline and water quality, so they have not yet become widespread and do not deserve popularity among domestic consumers.

About 80% of all water heaters sold, run on batteries. There are special adapters that allow you to connect the boiler to an ordinary household network.

Operating principle of a battery-powered water heater

The need for electricity for automatic gas boilers is due to several basic functions and tasks:

The principle of operation of battery-powered gas-fired boilers is as follows. when you open the tap of the hot water supply, the water enters the reducer. The created pressure drives the rod, which opens the gas supply and at the same time sends a signal to the ignition unit and turns on the display.

Batteries in the gas water heater serve as an energy source. Over time, the cells will run out of power, causing malfunctions: long periods of switching on and failing to work.

How long will the batteries in the speaker last

Everything depends on the condition of the water heater and the correct settings. Gas water heaters with automatic ignition from batteries can run for about 6 months without the need to change the power supply. Of course, this is only possible if high-quality elements are used.

If the batteries run down quickly, the problem is most likely hidden in a faulty ignition unit, or in the electrodes that produce a spark, located in the wrong position.

In addition to the above, lead to a rapid discharge of batteries can:

The principle of the flow-through water heater

Gas water heater is a relatively simple device for heating water. On top there is a heat exchanger connected to the water system. Under it there is a burner, which is connected to the gas pipe.

All modern models have automatic ignition of the burner, only very old or malfunctioning models are ignited manually. The latter is better repaired, so as not to risk the health of your home and the integrity of property.

The design is hidden by a protective casing, on the front of which the control unit is usually located. It regulates the maximum temperature of water heating, the amount of gas and other indicators of the device operation. On top there is a hood and chimney pipe, which removes the products of combustion.

When the water in the house is opened, the burner automatically turns on, the gas heats the water to the desired temperature. Auto ignition is set so that the speaker turns on only at a sufficiently high water pressure in the system. Another important indicator is the presence of a good draught.

The process of heating water is accompanied by a hard sediment that gradually accumulates inside the heat exchanger. The tubes are clogged with sediments, as a result the quality of heating deteriorates, the flow-through water heater operation becomes insufficiently effective.

Regular cleaning of the speaker will help to avoid such problems. In addition to limescale, other impurities can collect inside the device, it all depends on the quality of the water.

The following signs indicate that it is time to clean the speaker:

  • the pressure from the hot water tap is much weaker than the jet from the cold tap;
  • The pressure is good, but almost immediately after turning on the column goes out;
  • the device stopped turning on at all, regardless of the pressure;
  • Insufficient heating of the flow is observed in comparison with the previous state;
  • The water heats up to the desired temperature, but too slowly.

Some malfunctions can also occur if the shutoff valve, which is installed at the inlet to the speaker, is broken. It is a good idea to check it first and only then proceed to cleaning.

Instructions for replacing old batteries

If you do not know how to change the batteries in the gas water heater, so as not to damage anything, we recommend that you carefully read our instructions further detailing the process of changing the batteries, so that none of the users do not have any difficulty with this task.

Batteries are in an easily-accessible location, often on the bottom of the case, and are very easy to remove.

In fact, the special compartment for batteries can have two types of configuration:

The withdrawable drawers are opened by pushing on their wall.

Batteries are often inserted vertically into battery compartments that can be locked with a latch. The batteries are held by a special latch, so when you open the box does not fall out of the box.

Replacing worn out batteries in the gas water heater takes several consecutive steps:

Извлечение батареек на газовой колонке. Removing the batteries on the gas water heater.

  • It is necessary to turn off the gas and water supply to the speaker.
  • Carefully open the battery compartment by pressing on its wall or unscrewing the latches.
  • Remove the old batteries.
  • Insert the new batteries, observing the polarities.
  • Put the box back in place (or close the lid). A “click” is heard when the boxes are correctly installed.
  • Restore the water and gas supply.

It remains to conduct a test run to make sure that the equipment works correctly.

The peculiarities of power consumption of gas powered speakers

In order to function properly, the adapter for a gas-powered speaker needs 3 volts. This is the voltage that the batteries create. Let’s assume that you have decided to make your speaker to work not from batteries, but from the network. This is possible if you use a power supply that can provide the necessary voltage at the output.

Nowadays a great variety of universal power supply units are sold. It is easy to find a device with the necessary parameters. For example, an adapter with a voltage of 3-12 volts and the current strength of about 1 Ampere, is enough for the ignition unit of the gas-powered speaker.

However, most likely, when connected, the gas speaker from the network will not work. The thing is that you need a stabilized power adapter for the speaker unit to work.

The difference between stabilized current and not, as well as for which devices will require an adapter capable of delivering one type of current and for which. the other, will be discussed a little below.

Many devices use a power supply to charge and operate from the mains. These are smartphones, shavers, modems, radios and so on. All those devices that need excellent line voltage and a different amperage than the standard outlet.

Replacing the battery in your Neva gas water heater

In fact, the principle of replacement in all such devices is the same. The method described below can be applied to the columns of another company, for example, Ariston.

remove, batteries, water, heater

You do not need to open the housing of the device. Just look for the plastic case on the bottom right. It is in this case the batteries are located. To access them simply turn the checkbox or press the latch and pull the lid to the bottom. Next, pull out the power sources and use them in the store to purchase new ones. Typically, the Neva gas water heater uses the type of batteries R20. They look like round barrels. There can be from 1 to 2 pieces.

We put the new ones, close the lid and check the device for proper operation! It should work! If this doesn’t happen, then the reason the unit doesn’t start is something else entirely. Probably something with the diaphragm.

In some speakers it might be a little different. Although in general the replacement scheme is similar. Looking again at the bottom right corner. There’s a checkbox that locks the cover in place. To replace, turn the flag along the long mowing line and press the center part of the box. After that a special case will come out, which will briefly say how to insert the batteries according to polarity. After inserting the new batteries put the container back and pull it through until it clicks into place.

How to prolong the life of the speaker?

The longevity of the speaker depends on many factors. Most of them are factory set, the rest are determined by the operating conditions.

By following some rules and recommendations, you can significantly reduce the number of breakdowns and prolong the life of the speaker.

Features of the use of batteries

Of all the parts, the batteries need to be replaced most often. For gas columns only alkaline batteries should be chosen, manufactured by technology Alkalin power size “D” and the first letter “L” in the designation. LR20. Their capacity and life span are five times longer than those of salt batteries: from 1 to 1.5 years.

Quality batteries cost from 1.2. There is a radical way to reduce the cost of battery replacement. conversion of the speaker to mains power.

remove, batteries, water, heater

For this you can buy a special 3V power supply or use a cell phone charger, 5V, with an additional stabilizer. The main requirement. that its power was enough for ignition, which occurs at a supply voltage of 3 V and a current of 350 mA.

In case of power outage, you can always keep batteries in stock, the good thing is that alkaline batteries have a shelf life of 5 years and above.

The quality of the speaker’s heat exchanger

When choosing a speaker, special attention should be paid to the quality of the heat exchanger. Type of metal and its quality have a major impact on the life of the radiator. They are made of galvanized steel, stainless steel, copper.

The most durable stainless steel, but inferior in thermal conductivity copper. Accordingly less economical, have a lower efficiency. Copper. the most effective on heat transfer, but also the most expensive.

The factor of expensive copper leads to the fact that manufacturers save as much as possible on the thickness of the walls of the heat exchanger, bringing it down to 0.5 mm, which significantly reduces the service life. For the same reason other metals are added to copper. The alloy obtained in this way can have unpredictable properties. As a result, such a heat exchanger can not even be soldered.

The quality of water in the system

If the water in the system is subjected to frequent chlorination, this negatively affects the condition of the copper heat exchanger. This, together with the thin walls of the pipeline, can quickly lead to corrosion and fistulas.

Increased water hardness combined with heating is equally problematic. Limescale deposits require periodic flushing.

Aqua filters and magnetic softeners can improve water quality. For more information and rules of selecting a water filter for purifying tap water, see the following publication.

Overheating of the gas heater

The most important factor leading to malfunctions and reducing the life of the heater is its overheating. It is important not to bring the temperature to 65 degrees or higher.

To reduce the risk of overheating the water, do not use the mixer to cool it. Change the temperature only with the flame and water flow control knobs designed for this purpose.

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