Accumulative gas water heater with a closed combustion chamber. Connection diagram and installation

The presence of hot water in the house is now not a luxury, but a necessary sign of comfort. To do this, use devices of various modifications and volumes. Among the many options, it is worth considering a gas storage water heater. The water in it is heated by the combustion of gas and supplied to household needs.

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What are the benefits of gas storage water heaters?

Such equipment provides for the presence of a container for the accumulation of the finished product. Such structures are easily installed indoors. Thanks to their significant stock, you can not worry that comfort will end quickly. The product is enough for several points working at the same time. In addition, it does not depend on the power supply.

They are characterized by low gas consumption. The amount of storage capacity depends on the needs of the family. It should be remembered that the faster water is selected from the tank, the more often the device turns on for heating. So if you decide buy gas storage water heater, then the volume of the tank should be 25-30% higher than the estimated quantitative volume of hot water.

Such equipment can be installed even in the country, as there are models that can run on liquefied gas.

Classification of gas boilers

Type of combustion chamber storage gas water heaters, available for sale in the SKO online store, are divided into two types:
closed chamber (requires forced draft equipment);
open chamber (has natural draft).

They can be part of the heating system, but they can also work independently. Among all the options, it is very popular. It is fully adapted to the conditions of Russia. Polyurethane foam insulation keeps the temperature of the liquid well and saves energy. They are made of floor and wall type, have piezo ignition. Can be connected in parallel or in series.

It is no less quality. It can be used in industry and at home. The steel enameled tank is reliably protected from corrosion. Wall or floor installation allows installation in any room. The manufacturer provides for reconfiguration to work on liquefied gas.

You should pay attention to. Capacitive representatives of this company are able to be combined with gas boilers. There are models with a built-in gas injection burner with heat dissipating ceramic rods. They will work both in the heating system and autonomously.

Gas storage water heaters necessary in every private house, especially since if there is no boiler room nearby, you can forget about hot water. And it is very necessary, at least for a pleasant stay in the bathroom and a comfortable shower, washing dishes and cleaning the house.

Breadth of application of gas storage water heaters

Therefore, storage gas water heaters are so popular among many customers and are bought primarily for country mansions and cottages. But they are also often used in city apartments in order to save on hot water supply, in office and industrial facilities and in other places.

It is not always possible to find gas water heaters for hot water in online stores, for the reason that their sales volume is not as high as, for example, other types of water heaters. However, on the website of the MirCli online store you can find a fairly large selection of heater models to suit your taste and budget.

The considered devices have many advantages, but still their main advantages are ease of maintenance and operation, cost-effectiveness, which means a constant supply of hot water, and their low price.

These devices are stationary closed type boilers with an atmospheric injection gas burner for liquefied natural gas, as well as ceramic heat-dissipating rods. Water heaters allow you to store a large amount of water, depending on the volume of the tank. It can be different, each model has its own, but usually its dimensions vary from 10 to 200 liters.

Differences and features

There are two types of gas storage boilers: vertical and horizontal, and they differ from each other only in the position of the tank, so you need to choose them according to your bathroom. If this does not matter, it is worth taking a vertical one, since usually with the same characteristics its cost will be lower.

Many of these devices can be connected to several points at once, as their water supply allows this.

Many storage water heaters have their own protective features that will secure their use in the house. So, if the flame in the pilot burner of a gas boiler for heating water suddenly goes out, the gas supply will be automatically turned off. A multifunctional regulator allows you to adjust the pressure in the nozzle, as well as the gas flow in the burner. This regulator is also useful in that it dampens pressure fluctuations in the gas network on the burner.

Hot water, flowing from the tap without interruption, is one of the signs of the comfort of any room. However, the Russian reality is such that not always people can use hot water all year round.

The installation of an economical gas water heater will help to solve household inconveniences.

A gas water heater is a device for heating water from a water supply system due to the energy of gas combustion. At the same time, both natural and bottled (liquefied) gas can act as a "supplier" of this energy.

Depending on the principle of water heating, gas water heaters are of two types: storage and flow

1. Accumulative gas water heater (gas boiler).

This type of gas water heater is a container (reservoir), from which hot water diverges through pipes to water points - taps.

The tank of the storage gas water heater, depending on the model, has a volume of 10 to 500 liters and is made either of steel coated with enamel or glass porcelain, or of stainless steel with a titanium coating.

One of the main advantages of Baxi storage gas water heaters is the ability to use a large amount of hot water at one time even during a complete shutdown of the water supply system. At the same time, access to the water accumulated by the water heater is carried out without any time delays.

Unfortunately, like any technological device, the storage water heater has a drawback due to the fact that the hot water remaining in the pipes between the tank and the tap cools down over time. For this reason, many users of storage water heaters are forced to open the tap and wait until the cooled water “goes down”.

The solution to this problem is the installation of a circulation system, which consists of a small pump connected by a small diameter pipe to a system of pipes through which water from the tank enters the taps. The pump pumps the water remaining in the pipes, but not used by the consumer, back into the tank, thereby preventing it from cooling.

2. Flowing gas water heater (geyser).

In fact, flowing gas water heaters are high-speed heat exchangers in the form of copper spirals or stainless steel plates. The principle of their operation is as follows: a cold water flow from the water supply system enters the geyser housing, inside which, due to heating, the water temperature rises. The water temperature is set by the consumer using a manual regulator, the water heating period is from 3 seconds to 2 minutes. Depending on the model, the flowing gas water heater delivers to the consumer from 10 to 27 liters of hot water per minute.

The main advantage of a flowing gas water heater is the ability to provide hot water in a volume not limited by the tank. Also, unlike storage gas water heaters, flow-through water heaters are relatively small and, as a rule, do not require specially equipped premises.

However, when operating instantaneous water heaters, it is necessary to pay attention to pressure drops in the water supply system. Insufficient amount of water can lead to overheating of the heat exchanger and, accordingly, the activation of protection and blocking of the burner. Thus, until the pressure in the water supply is normal, it will be very difficult to heat the water.

Instantaneous water heaters consume fuel only during use, that is, direct heating, of hot water, which makes them more economical than storage water heaters.

Gas combustion chambers in a water heater

Gas water heaters, regardless of the principle of water heating, are equipped with combustion chambers, which, according to the nature of the fuel waste output, are of two types - closed and open. In open-type combustion chambers, the fuel combustion process occurs under the influence of natural draft, which entails the need to ensure a continuous supply of fresh air to the room where the gas water heater is located.

The main disadvantage of a water heater with an open combustion chamber is that after its installation in residential premises that are not equipped with additional ventilation, there may be a lack of air, a feeling of stuffiness and an accumulation of carbon monoxide. For this reason, it is necessary to allocate a separate room for such equipment.

In gas water heaters using a closed combustion chamber, air is supplied outdoors using the so-called coaxial chimney, which is the simplest pipe-in-pipe design.

During operation in such a chimney, the products of combustion of gas are ejected through an inner, narrower tube, while the air for the operation of the chamber goes through the outer pipe. The movement of combustion products of fuel and air is carried out using a small electric fan.

Ignition of gas in a water heater

Gas water heaters use various types of gas ignition in the burner, which, in general, can be divided into 2 groups:

1. Ignition of gas with an on-duty wick.

In water heaters with a pilot wick, a semi-automatic system (piezo ignition and electric ignition) is used to ignite the gas. Ignition in this case is carried out at the touch of a button.

Water heaters with this type of ignition consume more fuel, some of which burns in the pilot wick.

2. Ignition of gas without a wick.

In this case, ignition occurs automatically using hydrodynamic or electronic ignition. In this case, the signal to turn on and start heating water will be just the opening of a tap by the consumer.

In general, ignition without a wick is the most convenient and beneficial for the consumer, since it provides gas savings of up to 15%.

Automation.

Gas water heaters of various types are equipped with control and protection automation of various levels of complexity.

Protective devices, as a rule, are automatic valves that instantly cut off the fuel supply to the main burner. Protection is enabled automatically in the following cases:

- stopping the flow of water through the heat exchanger or lowering the pressure in the water supply system;

- failure or malfunction in the gas ignition system;

- absence or weakening of draft in the chimney.

In addition to protective automation, experts recommend installing stabilizers on gas water heaters that help control the power of the water flow, maintain the temperature set by the consumer, and also, to a large extent, the noise level of the equipment.

Control automatics, which are installed on water heaters, include thermostats and controllers. Thermostats are designed to control the temperature of hot water and are usually an additional control panel on the body of the water heater. But in some models of gas water heaters, thermostats look like a remote control with a moisture-repellent coating.

The controllers allow the consumer to set the temperature for predetermined periods of time and completely turn off the water heater when hot water is not required. These devices are usually installed only on storage water heaters.

Features of placement, installation and maintenance of gas water heaters

When purchasing a gas water heater, the consumer is faced with the need to prepare the point where the system will be installed. Depending on the type and dimensions of the water heater, it can be a separate room or a specially equipped place (part of a wall, corner, etc.).

The room intended for the installation of the water heater must have a ceiling height of at least 2.2 m, and a volume of at least 8 m3 for equipment with an open combustion chamber and at least 6.5 m3 for a system with a closed chamber.

Regardless of the type of combustion chamber, next to the place for installing a gas water heater, there must be a ventilation duct extending outside the room, or at least an indirect opening for air inflow (gap between the floor and the door, grate, etc.).

The room in which the water heater will be installed must be heated and protected from frost. Otherwise, the water in the draw-off pipes and the tank will freeze, causing damage to the equipment.

The wall on which the water heater will be mounted must have a non-combustible coating so that heating does not lead to a fire.

In general, it should be noted that the most optimal place for placing small gas water heaters is a kitchen or a room near water points. For storage water heaters of large volume, basements and semi-basements are best suited.

Manufacturers and suppliers of gas water heaters often require that the installation of the equipment be carried out exclusively by their service department. It should be noted that such a requirement is quite reasonable, since employees familiar with the company's water heater models can perform a high-quality and safe installation of the system.

Most of the work during the installation of a gas water heater consists in connecting gas and cold water to the equipment, as well as installing and adjusting automation. Gas is supplied to the system using copper or steel pipes equipped with gas cocks and mechanical filters against pollution. On the pipe through which cold water enters, a shut-off valve is installed without fail, which shuts off during an equipment failure. In addition, a check valve is installed on the gas water heater system, which prevents the return of heated water to the water supply system.

The number and configuration of equipment that can be additionally installed on a gas water heater depends on its type, type of combustion system and fuel characteristics (natural or liquefied gas).

Gas water heaters, like any complex technical device, require periodic inspections to ensure their efficient operation. After-sales service can be carried out both by the seller's specialists and by employees of the company providing this kind of service.

The frequency of technical inspections depends on the complexity of the equipment, but can not be less than 1 time per year.

Summing up this article, it is worth saying that gas water heaters are ideal for providing hot water on an ongoing basis and compare favorably with others in their efficiency, convenience, durability and independence from the electrical network. Gas water heaters are equally successfully used for both domestic and household needs in the presence of natural or liquefied (balloon) gas.

The Russian market has a wide range of equipment of domestic and foreign manufacturers with a large selection of models.

It is necessary to purchase gas water heaters only in a new condition, checking that the seller has all certificates and permits. Installation of equipment should also be entrusted exclusively to qualified specialists who have licenses and work permits.

Everything is clear with flow heaters - gas water heaters work much more efficiently than electric counterparts.

Flow, storage and combined boilers - the choice and features of work

And from the point of view of paying bills, "gas" hot water supply looks more attractive than the "electric" option. Any homeowner will agree with this opinion.

However, in the case of storage heaters - boilers - such a unity of judgments is not observed. Therefore, in this article we will try to find out which is better: a gas or electric boiler.

Gas water heaters

Round One - Design Review

Any boiler consists of the same nodes:

Storage tank where cold water is poured. Moreover, the supply of cold water and the removal of hot liquid is carried out using special fittings.
A heating element that raises the temperature of the water in the tank.
Thermostat - a control and regulating element that turns on the heater at a minimum temperature and turns it off when it reaches the specified degrees.
Control panel with which you can calibrate the thermostat by raising or lowering the set temperature in the tank.

At the same time, a gas boiler differs from an electric storage water heater only in the design of the heating element. The electrical appliance uses a heating element as a heater - a tubular conductor with high resistance, which heats up when connected to the network.

The gas appliance heater is more complicated. It consists of a gas burner built into a cylindrical combustion chamber, which is “in combination” also a gas duct - a pipe that discharges combustion products outside the body. At the same time, the gas duct is built into the storage tank - it penetrates it through and through, like a samovar pipe. That is, the burning gas heats the air in the flue, which, in turn, transfers the temperature to the water in the tank.

Scheme of the internal structure of a gas water heater

As you can see: the heating element of an electric boiler is simpler than a similar unit of a gas appliance. However, a gas burner works for years without burning out or rusting from water. And the surface area of the flue is much larger than the similar parameter of the heating element.

As a result, a gas boiler works more efficiently than an electric counterpart. While the heating element heats up a couple of liters, the gas burner can boil 3-4 times more liquid.

So this round is left to the gas boiler.

Round two - comparison of installation processes

The dimensions and weight of an electric and gas boiler, designed to serve the same volume of liquid in the tank, are approximately equal. Therefore, the process of mounting the boiler on the supporting surface will be absolutely identical in both the "gas" and "electric" cases.

The tie-in of the boiler into the hot and cold water supply network is carried out according to a typical scheme, common for both gas and electric storage water heaters.

Installation of a gas water heater

But the connection of the "energy line" is implemented according to completely different schemes.

An electric boiler is simply “plugged in” without asking permission from the power company. The gas boiler is connected to the gas pipeline, with the support of the relevant service.

Moreover, both connection schemes are equally simple - even a novice electrician or gas worker will master them. However, due to excessive bureaucracy, installing a gas boiler will be much more difficult than installing an electric water heater.

Therefore, the gas storage boiler loses this round "outright".

Round three - safety

An electric boiler can shock or explode due to a failure of the safety valve that releases superheated steam. The gas storage tank may catch fire or explode due to a gas leak. So with the same bad luck, both the owners of electrical appliances and the owners of gas analogues will have problems.

Therefore, in the third round we have a clear draw. Moreover, a gas leak from the burner is as unlikely as a "breakdown" of electricity on the tank body.

Round four - the price of models

Electric boiler Vaillant VEH 200/6

with a tank volume of up to 200 liters and a heat output of 8.5 kW.

Electric boiler Vaillant VEH 200-6

It costs almost 80,000 rubles.

Gas storage boiler Vaillant VGH 220/5 XZU

Vaillant VGH 220-5XZU

With a tank volume of 220 liters and a heat output of 8.5 kW.

It costs 90 thousand rubles.

That is, taking into account the 10% excess of the volume of a gas heater over an electric analogue, the difference in price is almost imperceptible.

However, on small volumes, the difference in price is still noticeable. For example, a 150 liter boiler

Ariston ABS PRO ECO PW 150V

Ariston ABS PRO ECO PW 150V

costs no more than 20 thousand rubles.

Ariston SGA 150 R

Ariston SGA 150 R

will cost 35 thousand rubles.

The difference in cost is obvious. However, almost all "small" boilers - up to 150 liters - work not only as water heaters, but also as heating boilers.

Boiler-boiler gas Baxi NUVOLA 3 Comfort 280 Fi

Wall-mounted boiler BAXI NUVOLA-3 Comfort 280 i

not only heats a room up to 280 "squares", but also stores a supply of water up to 60 liters.

Given this nuance, the price is 66 thousand rubles

it no longer seems sky-high, because for 40-50 thousand (the balance minus the cost of a 60-liter boiler) you can’t buy a decent boiler with a thermal power of up to 28 kW.

Consequently, after a stubborn struggle, having received unexpected reinforcements from manufacturers, the gas boiler snatches the lead from electric heaters.

Round five - cost of operation

It's time to build on your success. Gas water heaters go on the offensive and knock out electric water heaters! Judge for yourself: the already mentioned Ariston ABS PRO ECO PW 150V spends 4.5 hours to heat up a 150-liter tank to 45 degrees Celsius, consuming 11.2 kW of electricity. That is, the cost of heating, taking into account the tariffs of 2015, will be 55 rubles.

And the more expensive Ariston SGA 150 R spends a little more than an hour (71 minutes) on heating the same 150-liter tank to the same temperature, consuming no more than 720 grams of liquefied gas or 0.8 cubic meters of main fuel. That is, the cost of heating will be only 25 rubles.

As a result, the Ariston SGA 150 R gas boiler simply knocks out the Ariston ABS PRO ECO PW 150V electric water heater, leveling the difference in cost for 600 hours of operation.

Break: summarizing

At the end of five rounds, the gas boiler leads the score. It is more efficient than an electric heater (water heating rate reaches 20 liters per minute), but more difficult to install (official permission from the gas service is required). But in terms of safety, there is no advantage for any model. At a price, with a slight stretch - the trick of the manufacturers who combined the heating boiler and the boiler - the gas appliance wins.

In terms of operating costs, electric water heaters turned out to be a clear loser - a gas boiler costs half as much, and it heats water four times faster. In the end, the gas storage heaters beat the electric counterparts by an “economical” knockout in the fifth round after leading the overall standings for the entire “match.”

Storage type gas water heater - floor standing

Gas non-volatile storage water heater, does not require connection to electricity. The ability to work at low water and gas pressure, the device has no restrictions on the minimum water pressure, has low hydraulic resistance, the pressure at the draw-off point is almost equal to the pressure at the inlet. The ability to connect a recirculation line allows you to reduce the time for supplying hot water to remote points of water intake. The capacitive design of the water heater (large heat exchange surface) reduces the formation of scale, allows the device to be operated for a long time without preventive maintenance. The presence of a flame is controlled by a thermocouple, which cuts off the gas when the flame goes out. The device is adapted to work with low water quality.

Non-volatile, does not require connection to electricity;
Piezo ignition - simplifies the ignition of the pilot burner without the use of matches;
Ability to work at low gas pressure;
Has no restrictions on the minimum water pressure;
Possesses low hydraulic resistance;
Increased heat exchange surface, reduces heating time;
Magnesium anode provides tank protection;
Lime Fighter® technology, with the help of turbulence of the water at the inlet, allows to reduce the deposition of scale;
The updated Honeywell combustion automation and control system provides an increased service life and greater accuracy in control (only in the G61 models 151 and 189 liters);
The LED indicator provides information about the current operation of the water heater and malfunctions (only in the models "G61" 151 and 189 liters);
Safety valve with thermostatic insert (10.5 bar; 98°C).
Possibility of cascade connection of several water heaters;
Possibility to connect a recirculation line;
Convenient water connection from above and from the side.
Steel tank with multilayer enamel coating;
magnesium anode;
High density polyurethane foam insulation;
Steel casing;
Flue gas deflectors;
Traction stabilizer;
Gas valve with built-in DHW thermostat;
Piezo element with pilot burner;
Stainless steel burner;
Safety valve with thermostatic insert (10.5 bar; 98°C);
Drainage faucet.

Among gas heating equipment, the most famous South Korean manufacturer has been successfully offering its product line for a long time. Consider gas boilers Daewoo, we will study what are their features, how they are connected, what problems they have.

Two common patterns
Daewoo DGB-100MSC
Daewoo DGB-250MSС
Comparison of two models plus problems

Of course, like everything that is done under the Daewoo brand, the boiler equipment of this brand is also made at the highest level. The following advanced technologies are used in the design of Daewoo units.

enhanced, diversified emergency control system;
power is regulated by infrared sensors;
there is an electronic adjustment of the burner;
various technologies have been applied to reduce the noise of operation;
there is protection against wind blowing into the chimney;
the gas supply is stabilized by a special valve.

All these advantages provide additional comfort to consumers and simplify the rules for operating Daewoo gas boilers. Among the units of the described Korean brand, such families are common as:

To finally make sure how high-quality, multifunctional and safe equipment Daewoo produces, we will analyze in detail two specific brands of boiler equipment.

Two common patterns

We selected for study two popular wall-mounted models with two heating circuits. That is, these devices are installed on the wall, they have two circuits - for heating and for hot water supply.

Daewoo DGB-100MSC with a power of about 11 kW, the prefix "DGB" indicates the full name of the corporation "Daewoo Gasboiler".
Daewoo DGB-250MSC with power over 25 kW.

Let us consider the intricacies of operating these two copies of the brand, and at the same time we will analyze typical malfunctions of such Daewoo gas double-circuit boilers. First of all, it should be noted that the models that we have selected are the most frequently sold among all the modifications of the described Korean brand.

Daewoo DGB-100MSC

This Daewoo gas double-circuit boiler is mounted on the wall, it provides for heating hot water, its power is 11.6 kW, and the area of \u200b\u200bthe room that it is able to embrace with heat is 130 square meters. m.

Let's see what the main qualities are inherent in him.

high-speed plate-type hot water heat exchanger;
when the gas pressure decreases, the unit operates stably;
built-in power supply protects the equipment from power surges;
There is a remote control, LCD display.

These advantages indicate that the Daewoo equipment is really multifunctional and comfortable to operate.

A detailed instruction for the described Daewoo gas boiler contains all the necessary operating information.

The main provisions of the instructions are as follows.

Installation is carried out in accordance with the recommendations and sketches.
Before operation, the heating system is filled with water.
At the first start, the air is gradually etched out. If the heating medium pressure drops and the temperature of the heating circuit rises, water must be added.
The indicator panel uses a system of conventions.
The boiler is activated by the control panel.

There are also several innovations applied in this model.

The circulation pump has a dry rotor and a magnetic coupling, which ensures its durability.
The gas burner is regulated by a patented mechanism.

It is clear that all these advantages cannot but affect the price, the cost of such equipment is also not small, but we will talk about this later.

Daewoo DGB-250MSС

It is also a wall-mounted double-circuit apparatus with a closed gas combustion chamber, the power here is higher - 29.1 kW.

Accordingly, the room can also be heated with a larger area, namely, up to 290 sq. m.

The advantages of this device, in principle, repeat those inherent in the previous model.

There is also a built-in power supply.
Also, the unit is set to reduced gas pressure.
The only thing that distinguishes the heat generator of this brand is that, despite its extraordinary compactness, it is very powerful.

The instructions for use for this Daewoo gas boiler, in fact, repeat the instructions for the previous model.

Here are the main features.

After filling the system with coolant, a test run is made.
The boiler is controlled by a remote control using buttons, the indication is carried out by conventional icons.
Possible error codes are listed in the detailed manual.

These codes indicate the characteristic malfunctions of the Daewoo gas boiler, in which gas combustion is most often blocked:

smoke exhaust system problems;
lack of water;
pump failure.

Comparison of two models plus problems

Now let's summarize the information received on two Daewoo units in the following table. There she is.

From this table it is easy to understand that the cost of the described equipment is not so high when compared with the price of equipment from other famous brands, in particular, of German or Italian origin.

Now let's talk about the characteristic malfunctions of Daewoo gas boilers.

Gas storage water heaters

What is more common, and how to deal with it.
Most cases of contacting repairmen, as shown by the years of operation of this equipment, are associated with an incorrect first start. Therefore, special attention should be paid to this stage during installation. It is necessary to follow each letter of the instructions attached to the technique.

Although there are few common failures.

There are cases of failure of the circulation pump, but this is more often associated with untimely cleaning of heat exchangers.
Failures of the electronic control system are possible, but they occur quite rarely, judging by the reviews.

Residents of private houses connected to the gas pipeline often prefer to use gas not only for heating their homes, but also for heating water. This decision is more than justified, because gas is a fairly cheap fuel. Thus, hot water supply provided with gas equipment is very beneficial for the family budget.

If you decide to heat water in this way, then you have two possible options - a gas boiler or a gas water heater. The first device is a storage type water heater, and the second is a flow type. Today we will talk about storage gas water heaters: their main characteristics, varieties and features of operation.

Device and principle of operation

Storage water heaters, unlike instantaneous ones, heat water in advance. Heating takes place in a metal tank, which is the main part of the design of any boiler. The size of the tank depends on how much water it is designed for. Domestic boilers with a capacity of 50 to 300 liters are on sale.

The water in the tank is heated by a heat exchanger. Most often it is a steel or brass coil. It is located at the bottom of the tank or distributed over almost the entire surface of the device. The coil receives heat from a gas burner, which is located at the base of the water heater in a special combustion chamber equipped with a flame tube.

In addition to all of the above, the design of the gas boiler contains heat-insulating elements, pipes for supplying and discharging water, as well as a variety of sensors.

The tank is filled with water automatically. When a fresh portion of water enters the tank, the gas burner turns on, the heat from which exits through the flame tube and heats the tank. As soon as the water in the tank heats up to the desired temperature, the sensor is triggered and the gas supply stops.

You can get even more information about gas boilers from the following video.

Kinds

There are several types of storage gas water heaters.

Such devices are classified according to the following criteria:

combustion chamber type: open/closed;
type of ignition: piezo ignition / electric ignition;
installation method: floor / wall.

Below we will take a closer look at each variety of this kind of device.

With open combustion chamber

Open draft gas boilers are equipped with an open combustion chamber. They work according to the following principle: the air necessary for combustion comes directly from the room in which the water heater is installed. Combustion products are discharged through a separate pipe - a chimney, which should be equipped in advance.

This type of gas boiler is cheaper, but the installation of a ventilation system is quite expensive, so from this point of view, the next type of water heater is more economical.

With closed combustion chamber

If you do not have the opportunity to equip a chimney in the house, the only possible way out is to buy a forced draft boiler. Such devices have a closed combustion chamber equipped with a system for removing combustion products. For this, a special pump is used, which draws out the smoke.

For boilers of this type, it is not necessary to purchase additional ventilation, since they do not take oxygen from the room. That is why the owners of private houses usually give preference to them.

With piezo ignition

To ignite modern gas equipment, there is no need to use matches or a lighter. Even the simplest models of gas boilers start heating after a simple push of a button. Water heaters that are not equipped with an automatic heating function belong to the class of devices with piezo ignition. Many consider such devices already obsolete, but they are losing their popularity due to their low cost.

With electric ignition

More modern models of storage gas water heaters are equipped with an automatic ignition system that starts independently when the water tap is turned on. Such models are more convenient to operate, moreover, they consume fuel more economically. The electric ignition system is powered by electricity or batteries.

floor standing

Floor-standing gas water heaters have a large volume - from 100 to 300 liters, so they differ in rather big dimensions. This must be taken into account when buying, since finding a place to install such a large device can be quite difficult. Since this type of boiler has a large capacity, they are usually purchased by owners of private houses in which there is no hot water supply all year round.

wall

Wall storage water heaters are more compact. Usually they are placed directly above plumbing fixtures. This is very convenient, as it allows you to more rationally use the space. Devices of this kind are designed for a small amount of water, so most often they are bought for installation in city apartments - as a temporary solution to the problem of lack of hot water during seasonal shutdowns.

Popular volumes

The volume of the tank is the most important factor when choosing a storage gas water heater. Many significant and not very nuances depend on this parameter, ranging from the time of water heating to the dimensions of the device. Manufacturers produce boilers with a capacity of several tens to several hundred liters.

When choosing the right volume of a water tank, you need to take into account the number of households and the daily water consumption for each of them. For example, for families with small children, it is more expedient to buy more spacious models, and for single people or couples who are rarely at home, very small water heaters with a volume of 10 to 50 liters are suitable.

150 liters

When it comes to purchasing a storage water heater for a country house in which the family lives permanently, you need to consider appliances with a tank volume of at least 150 liters. It is this amount of hot water in the tank that is necessary so that a family of several people does not have problems with hygiene procedures.

200 liters

It is estimated that bathing requires 150 to 200 liters of water, showering 50 to 90 liters, and washing dishes requires 20 to 30 liters of water per day. Add to this 10-15 liters, which are spent on washing and washing hands, then multiply the resulting number by the number of households. The result of the calculations may surprise you unpleasantly. That is why water heaters with a large tank volume (from 200 liters) are considered the best solution for a family, especially if she lives in a private house without hot water supply.

Connection diagram and installation

Installation of the storage water heater should be carried out in strict accordance with the installation instructions, which you will definitely find in the user manual.

The boiler should be installed against the wall; at the same time, make sure that the pipes for hot and cold water are strictly parallel to it. There should be a small distance between the water heater and the wall, allowing preventive inspection and maintenance of nodal connections.
It is recommended to use a ¾ inch pipe for connection to the water supply. Stand facing the appliance: the hot water pipe should be located on the left hand, and for the cold - on the right hand.
Using a safety valve for a storage water heater will help to avoid overheating of the device and the associated unpleasant consequences.
Before you start connecting the boiler to the water pipes, open the cold water tap. Make sure it is fairly clean, free of sand, rust particles, and other small debris. If necessary, insert a special water filter into the pipe (in the network section up to the water heater).
Also, before starting installation, it is recommended to check the pressure in the water pipes. Its level should not be higher than 8 bar. If this value is exceeded, a pressure reducer must be installed.
Drops of water falling from the hydraulic valve are a sign of the normal operation of the device and the water supply network. But it is necessary to ensure that water from the valve does not fall on the body of the water heater. To do this, you need to attach a special drain funnel to the valve with an outlet to the sewer.
If the boiler is installed in a country house that does not have constant heating, you need to make sure that no water remains in the tank when the temperature outside drops below zero. Therefore, when leaving the house in the cold season, always drain the remaining liquid from the tank, otherwise the device may fail.

Ventilation

Accumulative gas water heaters that take air from the room in which they are installed should be placed only in rooms that meet several important requirements:

air intake is carried out from the street or from an adjacent room;
the room has a ventilation hole with an area of at least 1 m 2 (the area of \u200b\u200bthe hole is calculated depending on the power of the device - 6 cm 2 for each kW);
the ventilation hole must be covered with a grate that does not impede the movement of air, and the hole must not be cluttered with anything.

It is impossible to give unequivocal advice about which water heater is better: gas or electric, instantaneous or storage. Each of the varieties has its own advantages and disadvantages.

So, gas boilers are more economical, but they are considered less safe than electric ones. Storage water heaters provide uniform heating of water, but flow-through models heat up faster and in large volumes. Therefore, each buyer must decide for himself which of the characteristics of water heaters is more important for him. In addition, the technical possibilities of connection should also be taken into account, such as the presence of a gas or water pipeline with normal pressure in the system.