Differences and advantages of turbocharged geysers with a closed combustion chamber. Instantaneous gas water heaters: TOP models, recommendations for choosing equipment

Unstable hot water supply (hot water supply) is gradually becoming a thing of the past, and in its place are new models of water heaters operating on natural gas. An acceptable option for both apartments and private houses with no chimney duct is a gas water heater with a closed combustion chamber. This modern device is also called a turbocharged or chimneyless flow-through device, since it does not need a chimney to eliminate exhaust gases.

How does a turbocharged column differ from a regular one?

An important difference between the new type of geyser is the closed combustion chamber, into which street air is forced by a fan or drawn in by a smoke exhauster. Hence the names of the household appliance - turbocharged, supercharged, smokeless. In atmospheric flow-through heaters, air flows to the burner directly from the room naturally, through an open lower opening.

A double-wall pipe can also be installed vertically, the operating principle remains unchanged

Any gas-using installation emits combustion products that must be vented outside. The turbo column is no exception, only in this case, instead of traditional channels for the exit of flue gases, a horizontal pipe is provided, leading out directly through the wall.

A gas water heater equipped with a closed chamber has other features:

the air for gas combustion is sucked in by a fan from the street through a double-walled (or double-circuit) coaxial chimney, through which combustion products come out;
the design of the instantaneous water heater provides for the use of multi-stage and modulating burners capable of changing the power and intensity of heating;
there is no constantly burning igniter, piezo ignition button or batteries;
turbo - the heater operates in automatic mode from ignition to shutdown;
air and fuel consumption is controlled by an electronic unit (controller), choosing their optimal ratio and suitable heating mode;
turbocharged geysers are powered from the electrical network.

An example of installing a water heater with all communications embedded in the wall, pipes and electrical wires are not visible

Reference. As a rule, superchargers are equipped with an electric ignition system with several spark electrodes. But in some models, sparking is organized using a mechanical hydrogenerator that generates electricity from the movement of water flow (Hydropower technology).

The principle of operation of a hydrogenerator located at the cold water inlet to the turbo column

Thanks to the listed features of such units, they implement many functions that increase comfort and safety during operation. They will be discussed further below.

OASIS

Model: OASIS TURBO 20S

Suitable for any type of room, it works thanks to a closed combustion circuit. It is best to install such a model only in rooms where there is no chimney exhaust.

Advantages and benefits:

operates at the lowest pressure of 0.2 bar;
You can control the temperature from two degrees;
if for some reason the water pressure and its flow changes, the column tries to maintain the water temperature;
there is a heat exchanger available, which is made of copper of the highest standard;
a valve that constantly controls the ratio of gas and air in the system;
control using buttons (modern);
warranty period – two years;
The column comes with parts to attach it to.

The kit does not include a coaxial pipe and a conversion kit for liquefied gas; it must be purchased separately. Country of origin: China.

Minuses:

— there is no coaxial pipe, you will have to look for it yourself; - and no, changeover to liquefied gas.

Rating: 4 out of 5.

Model: OASIS TURBO GLASS BG20

This model is perfect for any room and has a high output coefficient. It works according to a closed combustion scheme and is best installed if there is no chimney in the house.

Manufacturers have provided for the exit of the treated gas and therefore installed a special fan that takes in all the gas. Then they are removed using a coaxial pipe. Works from light and with a small water flow of 0.2 bar.

Advantages and disadvantages:

can operate on two types of gas, the main thing is to immediately install the transition system during installation;
a new and interesting display that automatically displays the temperature and possible breakdowns in the system;
shelf life – two years;
a sensor that controls the heating system;
fuses in case of overheating;
highest security measures.

Minuses:

— production and assembly takes place in China. — the set does not include a transition system and an exhaust pipe; they must be purchased separately.

Rating: 4 out of 5.

Model: OASIS TURBO GLASS DG20

An interesting model with a unique design. It operates on the basis of a closed combustion type, best suited for apartments or private houses. All column models are recommended to be installed in rooms where there is no chimney.

The column already has a system that independently copes with the remaining treated gas and removes it using a special tube, which is called a coaxial pipe. The column operates from the electrical network, with a minimum water pressure of 0.2 bar.

Advantages and benefits:

works with two types of gas;
shelf life – two years;
new and bright display.

Minus:

-needs to be cleaned; — the design may not fit the existing design of the room.

Rating: 4 out of 5.

Advice: choose only safe speakers that have system safety features, as quite often there may be failures in both the water supply and the light supply. In addition, choose those speakers that have a gas removal function.

comparison table

Comparative table of characteristics of all models

But gas units are divided into several types: flow-through and storage (boilers). Their significant drawback is that the boilers are rather large in size and their installation can sometimes cause some difficulties and inconvenience.

The main advantages of the column:

total economy;
easy operation and intuitive controls;
neat appearance, variety of design;
long period of operation;
and safety.

ventilationpro.ru

Ariston

The Italian manufacturer supplies to the Russian market only one model of gas water heater with a closed combustion chamber - Next EVO, but in two modifications - SFT 11 NG EXP and SFT 14 NG EXP. This new generation device was developed taking into account the peculiarities of Russian conditions and will be able to provide efficient water supply, even when water consumption changes. It is highly economical, has an improved design and expanded functionality.

SFT 11 NG EXP

SFT 11 NG EXP [gallery2 ids="14418,14419,14420"]

Net power	From 8.5 to 19 kW
Thermal output	21.5 kW
Performance	11 liters per minute, when heated to +25 C
DHW temperature values	From 25 to 65 degrees C
Liquid p parameters	0.1 to 10 bar
Maximum gas pressure	20 mbar

The SFT 11 NG EXP rating, according to user and expert reviews, is 5 points.

SFT 14 NG EXP

This modification differs from the basic one in productivity and other characteristics, which allows the consumer to choose the best option for specific operating conditions.

Net power	From 9.0 to 24 kW
Thermal performance	27.0 kW
Performance	14 liters per minute, when heated to +25 C
DHW temperature	From 25 to 65 degrees C
Water p parameters	0.1 to 10 bar
Maximum gas pressure	20 mbar

Roda JSD20-T1

A popular middle column in catalogs from a well-known German manufacturer of household appliances. The average price in Russian online catalogs fluctuates around 11-12 thousand rubles.

Characteristics

Technical Parameter	Implementation
Type of equipment	Flow-through geyser
Ignition type	electrician
Water consumption	10 liters
Design features of the model	There is no way to connect to a cylinder
Control	Mechanical round power selector and LCD temperature indicator

The overall product rating is 4.5. An excellent model, affordable, reliable, and very easy to operate. There is one significant drawback - it does not work on propane.

Operating principle of a supercharged heater

If we talk about the principle of operation in general, then all gas instantaneous water heaters work the same way: when the corresponding tap on the mixer is opened, the burner in the unit is ignited by the pressure of the flow and begins to heat the water passing through the heat exchanger. Another thing is how this is implemented in a gas instantaneous water heater with forced air injection.

Functional diagram of a water heater equipped with a turbine

Unlike other types of water heating devices, a gas water heater with a closed combustion chamber operates according to the following algorithm:

In standby mode, the household appliance is connected to the electrical network. Nothing burns in the chamber because there is no igniter there.
When the user opens a hot water tap, the flow sensor and the membrane of the water unit are activated. The latter mechanically opens the gas valve and fuel flows to the gas burner device.
At the command of the controller, a spark discharge occurs on the electrodes located near the burner, igniting the gas. The flame sensor detects the appearance of fire, informs the control unit about this, after which sparking stops. At the same time, the fan is turned on, pumping air.
The flame, controlled by the controller, heats the water to the temperature set by the user, which is monitored by a separate sensor. When it is reached, the burner power is reduced by reducing the flame (modulation) or turning off 1-2 burner stages.
After closing the DHW tap, the gas supply is shut off, the burner goes out and the water heating process is completed.

Modulating (left) and staged burner (photo right)

Thanks to a more advanced design, the efficiency of turbocharged speakers is higher than that of conventional atmospheric ones (88-90% versus 84%). Efficiency is achieved in the following ways:

precise dosing of the amount of natural gas and air required for combustion;
Maintaining the set temperature helps save fuel, since gas is not consumed for excessive heating;
preheating the air flow in a coaxial chimney.

The last feature is the most effective, since it makes it possible to recover some of the heat carried away with the flue gases. Cold air from the street, passing through a coaxial pipe next to the combustion products, takes away their thermal energy through the steel wall.

Details about the design of coaxial chimneys are shown in the video:

Closed chimneyless dispensers are equipped with several safety levels that are triggered for the following reasons:

disappearance of draft in the chimney due to the fan turning off after a power outage;
spontaneous extinguishing of the burner (flame control);
too low or high gas inlet pressure (automatic gas valve);
the pressure in the water supply exceeds 10 Bar (water safety valve);
overheating of the heat exchanger, which can cause a pressure surge and depressurization of connections;
very low water consumption;
controller failure.

Note. When the device is turned off by a signal from the heat exchanger overheating sensor, some models provide rapid cooling with a fan that continues to operate after the burner goes out.

Any of the above reasons entails the operation of the gas valve and the cutting off of the fuel supply. Moreover, after a power outage, burner extinguishment and pressure surge in the gas pipe, the valve operates independently, without controller intervention.

To appreciate all the delights of using turbocharged gas water heaters and find out their weaknesses, we suggest that you familiarize yourself with their advantages and disadvantages.

Reviews from real users

There is a good tradition: before choosing a turbocharged speaker, it doesn’t hurt to read the user reviews left on thematic forms. We have made a selection of statements from real people about water heaters from different manufacturers:

Nikolay, Vladimir, Russian Federation. Six months ago I installed an Ariston MARCO POLO GI7S 11L FFI turbo dispenser. The general conclusion is that the device is worthy and has never let you down. Definitely an A for appearance. But there is one strange thing: heating a given amount of water. I don’t understand this function - either the heating should turn off when the bath is full, or it should turn it off by a signal. I was a little mistaken about the power, in my case I had to take Ariston GI7S 16L, otherwise 11 liters per minute is sometimes not enough.
Sergey, Moscow, Russian Federation. I made a mistake by buying a Bosch WTD15 AME speaker with a turbine. I didn’t like it already during the installation and connection process. Some of the pipes are flimsy, it’s scary to tighten the nuts. The first time I opened the water, the connection leaked, I had to unscrew it and change the rubber ring. I don’t know how to use it yet, I haven’t turned it on yet.
Alexey, Dnepr, Ukraine. We haven’t had hot water in our city for a long time, most people installed boilers, but I solved the boiler. It was forbidden to connect a chimney to the ventilation, so I took a Junkers chimneyless unit (German brand, Portuguese assembly). Although I ran around for all sorts of permits, I’m generally satisfied; I don’t have to wait for the water in the tank to heat up. I live on the top floor, there were no problems with the chimney. The gas workers said that it would be more problematic to remove the pipe on other floors.
Mikhail, Kursk, Russian Federation. Proton exchanged his ancient speaker for a Roda JSD20-T1, a neighbor installed one and praised it. Everything would be fine, but our pressure jumps in the pipe, as soon as I open two mixers at once, the heater turns off, and then lights up again. The gas workers came twice, checked and said that everything was fine with the device. Now we are trying to get the hang of opening the taps one at a time, but otherwise there are no questions, the water heats up normally.

Colorfully designed water heaters look impressive.
In general, reviews of turbocharged gas water heaters are positive, although there are many small nuances that cause inconvenience. Much less negativity is expressed, and most of these reviews are related to the fact that they did not like the product initially or that the equipment could not be installed and connected independently. The latter is quite natural, because in addition to having plumbing skills, you need to be familiar with electrical engineering and know that many imported household appliances are sensitive to incorrect phase connections.

For reference. Some apartment owners who have used gas water heaters before do not like pressurized units for the sole reason that the combustion process is not visible in them. This gives rise to some psychological discomfort and groundless prejudice towards such products. Good news: you can find turbo units with a viewing window on sale, for example, the Chinese water heater Selena SWH 20 SE1.

Beretta

The Italian concern Beretta produces several gas water heaters with a closed combustion chamber, of which three models are in high demand.

Idrabagno 13 ESI

Idrabagno 13 ESI [g[gallery2 link=»file» size=»large» ids=»14422,14423"]p>

Net power	24.5 kW
Thermal output	21.5 kW
Performance	8 liters per minute, when heated to +25 C
DHW temperature values	From 25 to 58 degrees C
Liquid p parameters	0.1 to 10 bar
Maximum gas pressure	13.5 mbar

The modest performance parameters of the Beretta Idrabagno 13 ESI are rated by users as 3 points.

Idrabagno 17

Idrabagno 17 [gal[gallery2 link=»file» size=»large» ids=»14425,14426"]

Net power	34 kW
Thermal performance	29.5 kW
Performance	17 liters per minute, when heated to +25 C
DHW temperature	From 25 to 65 degrees C
Water p parameters	0.1 to 10 bar
Maximum gas pressure	13.5 mbar

Idrabagno 17 I

Idrabagno 17 I [galle[gallery2 ids="14428,14429"]table>

Net power 34 kW Thermal output 29.5 kW Output 17 liters per minute, when heated to +25 C Temperature values of hot water supply From 25 to 65 degrees C Liquid p parameters From 0.1 to 10 bar Maximum gas pressure 13, 5 mbar

This equipment is rated extremely positively by its owners – 5 points. The entire range of water-heating household appliances with a closed chamber of the Beretta brand have the following advantages:

• economical consumption of electricity, which is used only after turning on the tap; • liquid temperature can be adjusted using a mixer; • the equipment is reliable and characterized by exceptionally quiet operation; • reasonable price, devices are available to a wide consumer audience; • automatic ignition system; • heat exchanger made of high-quality material, burner – simulated; • ability to work even at low water pressure parameters in the system; • modern control system guaranteeing a high level of safety.

The only drawback is the relatively large dimensions, which is fully compensated by the modern elegant design.

Important! Whatever model you choose, the user must understand that only half of the performance and efficiency of the equipment depends on its quality, the remaining 50% depends on competent professional installation.

WERT 10LT white

WERT 10LT white
An ultra-budget option for the home, it costs only 8 thousand rubles, which is cheaper than many speakers with an open chamber.

Characteristics

Technical Parameter	Implementation
Type of equipment	Flow-through geyser
Ignition type	electrician
Water consumption	10 liters
Design features of the model	Front heat dissipation grille
Control	LCD indicator, two mechanical round selectors

Rating - 3. Chinese assembly in the worst sense of the word. The turbine is noisy, breaks down, and periodically produces the wrong water temperature. But it's cheap.

How to choose a turbocharged gas water heater

When selecting, it is necessary to take into account the characteristics of the gas water heater and the characteristics of the room in which it will be installed. Be sure to take into account the presence of additional functions. When choosing, pay attention to the following parameters:

Ignition type - simple and reliable speakers have mechanical control. The gas is ignited manually using piezo ignition. Further work continues with the igniter constantly burning. Disadvantage of the device: dependence of work on a person and the need to comply with safety rules related to turning on / off equipment. The best alternative is to purchase an automatic water heater with electric ignition (usually battery powered) with mechanical or electronic control.
Automation - equipment differs in the degree of automation. Fully automatic dispensers are easy to operate and maintain the required water heating temperature regardless of the pressure in the pipeline.
Heat exchanger material - it is better that the coil is made of copper. Copper has good heat transfer properties, as well as resistance to scale and overheating.
Storage tank - made of ordinary or stainless steel. The inside is covered with a special glass-ceramic polymer coating. The material of the storage tank directly affects the cost of a gas water heater. Equipment with a stainless steel tank costs 1.5-2 times more.
Throughput - water heating rate or productivity. To provide one water point (shower and dishwashing), a 17-20 kW (10-11 l/min) heater is required. To take a bath and simultaneously use several hot water points, you will need a 20-26 kW (11-15 l/min) water heater.
Gas type - all dispensers are designed to operate on mains gas. If the design includes a modular burner device, it is possible to connect a propane water heater. The equipment can fully operate on bottled gas or be connected to a gas holder. This is in demand in areas where there is no centralized gas supply. A liquefied gas instantaneous water heater will solve the issue of hot water supply with minimal fuel costs. Operation should be cheaper than using electrical equipment (depending on location and energy tariffs).
Additional functions - the speakers are equipped with modular burners and a self-diagnosis system. The anti-freeze function will be useful, preventing damage to equipment during a short-term emergency drop in temperature.

After selecting a suitable gas water heater based on technical and operational characteristics, you can proceed to selection by manufacturer. Below is a unique rating, which includes models that enjoy constant popularity among domestic consumers.

Before deciding on the advisability of a purchase, you should study real reviews of turbocharged gas water heaters from various manufacturers.

Flow-through

Ariston Gi7S 11L FFI - flow rate 11 l/min. There is electric ignition and frost protection. There is a built-in function to automatically maintain the set heating temperature when the water pressure changes.
Lemax Turbo-24 is a product of a domestic manufacturer. The basic modification includes microprocessor automation and touch control. Operates on mains power and backup power. The multi-stage protection system in Lemax Turbo-24 prevents emergency situations with excessively high water pressure, and also turns off the gas supply to the burner during a dry start.
Vaillant AtmoMAG exclusiv 14-0 RXZ - mechanical control and the need for manual ignition of the burner using a piezoelectric element. Capacity 14 l/min.
Rinnai RW-14BF is a universal water heater running on natural and liquefied gas (during conversion it is necessary to replace the nozzles). The column is economical and efficient. The RW-14BF has a self-diagnosis system. Flow rate 14 l/min.
Vatti MR11-N is a small and compact water heater with a capacity of 5.5 l/min. There is protection against overheating of the coolant. Vertical type of installation.
Ariston NEXT EVO SFT 11 NG EXP is a model with a modern design. Touch control. Frost protection. Automatic ignition from the network. Capacity 11 l/min.
Haier JSQ20-PR (12T) is a wall-mounted water heater. The design uses a modulating gas burner made of stainless steel. Electronic control. Capacity 10 l/min.

Cumulative

Roda GasKessel GK 80 is a gas boiler with vertical mounting. There is a system that protects the tank from scale. Polyurethane is used as thermal insulation.
Hajdu GB80.2 is a gas storage tank with an 80 liter capacity. Designed for wall installation.
Bradford White DS1-40S6FBN is a powerful boiler with a storage tank capacity of 150 liters. The inside of the container is covered with a glass-ceramic coating. DS1-40S6FBN works even with a minimum water pressure of 0.1 Bar. Can run on reduced gas. The optimal water heater option for a family of 4 people.

After choosing a column, it must be correctly connected to the gas supply and smoke exhaust systems.

Lemax Turbo-24

Lemax Turbo-24
Also a well-known model from catalogs. The production is a Russian-Chinese joint venture, thanks to which the electronics are quite decent and the price is affordable - from 15 thousand rubles.

Characteristics

Technical Parameter	Implementation
Type of equipment	Flow-through geyser
Ignition type	electrician
Water consumption	12 liters
Design features of the model	Asymmetrical design, good RCD
Control	Sensors and a small screen with indicators and numbers

Rating - 4. Good performance, adapted to Russian networks, but assembly is not always perfect.

Advantages and disadvantages of turbocharged water heaters

A gas water heater with forced removal of combustion products has proven itself on the positive side. There are certain disadvantages.

Before purchasing, you should consider all the nuances of operation. Particular attention is paid to the existing pros and cons.

Why are turbo speakers good?

A hot water column with a closed combustion chamber has several advantages:

economical fuel consumption, approximately 30% less than classic atmospheric water heaters;
constant water temperature, regardless of the pressure in the pipeline;
quiet operation;
convenient control;
high performance.

An instantaneous water heater with forced removal of combustion products, provided proper connection and operation, will work for at least 10-15 years. The manufacturer's warranty in most cases is valid for the first 2-3 years of use.

Features of the chimney device

The ventilation system for removing waste combustion products and ensuring air flow in the room has the same device, whether it is a corrugated hood for a gas water heater or a solid brick chimney. The chimney must consist of the following parts:

Feedthrough pipe.
Pipe for removing combustion products.
Adapter for connecting previous parts to each other.
Crimp clamps and mounting brackets.
Telescopic tubes.
Tee with a hole in the region to remove condensate.
Bends.
Cone tip.

All parts can be attached one by one independently, without violating safety precautions, using special non-flammable materials. But it is better to turn to professionals.

How do chimneys differ from each other? The material from which the parts are made, the choice of pipe installation method and the geometry of the ventilation shafts.

Advantages of chimneyless water heaters

As we have already found out above, there is no gas water heater without a chimney, and in the case of turbocharged units it is structurally simplified. This is the main advantage of forced-air water heaters, thanks to which they can be installed in any private house or apartment. It is enough just to lay the chimney horizontally along the shortest path from the apparatus to the outer wall and take it outside by making a hole.

This is what a coaxial chimney looks like when laid through an external wall

For reference. If necessary, a coaxial pipe can also be installed on the roof of a private house by laying it vertically inside a finished shaft or directly through ceilings lined with non-combustible materials. Details about connecting chimney pipes to geysers are presented in this article.

Now we list other advantages of “flueless” gas heaters:

Increased efficiency and cost-effectiveness compared to traditional household appliances for heating hot water;
Thanks to the closed chamber, the penetration of harmful gases and unpleasant odors into the premises is excluded;
To install a water heater, it is enough to organize regular supply and exhaust ventilation, since it is impossible to do without a hood completely. But you don’t have to worry about how to arrange a supply of fresh air for combustion in the room.
The high degree of automation of the turbocharged column makes it very convenient to use.
The ability to use not only natural but also liquefied gas as an energy carrier. True, this requires a special hood located in the lower zone of the room (propane is heavier than air and spreads along the floor).

The water heater is closed on all sides, with a pipe for connecting a coaxial pipe coming out from above, and fittings for water and gas from below
. In addition to several sensors responsible for the safety and maintenance of water temperature for domestic hot water needs, the forced-air dispensers are equipped with a heat exchanger antifreeze system. The principle is simple: when the temperature in the room drops below zero, the electric heating element will automatically turn on, heating the heat exchanger and preventing the water from freezing.

The anti-freeze function in a turbocharged column may be useful in case of emergency shutdown of the heating system in winter. It will keep expensive equipment from defrosting until the owners take measures to heat the house. True, it is unknown what will happen to cold water pipelines if they are made of steel or polypropylene.

For reference. Not so long ago, condensing geysers appeared on sale, working even more efficiently than turbocharged ones. An example is the BOSCH WTD 27AME THERM 8000 S with a power of 48 kW and a capacity of 27 l/min, whose efficiency exceeds 90%. But for now they are extremely expensive (the price of the specified copy is 1550 USD), and therefore are practically inaccessible to the average user.

Construction of a condensation column with a cylindrical burner

Common mistakes

Errors when installing ventilation elements can lead to disruption of the proper operation of the structure and loss of operational safety. The most common are the following:

Combination of hoods for a water heater and a gas stove, or for a gas boiler. In this case, reverse draft may occur in the ventilation shaft and carbon monoxide will return to the room;
Do not connect two speakers to one chimney;
The next mistake concerns the installation of a geyser - it is often placed in the bathroom, this cannot be done. All gas appliances must be installed in rooms with a window;
Self-taught craftsmen often confuse the ventilation duct with the riser supplying water to the column. The consequences of such an error will be the replacement of all gas equipment, not only for you, but also for your neighbors below. Gas services remove liquid. They will turn off the gas and issue a hefty fine;

About the negative aspects

An important disadvantage of forced-air instantaneous water heaters is their energy dependence. That is, after a power outage you will be left without hot water. You will need an electric generator or a reliable uninterruptible power supply. The remaining disadvantages of these units are not so critical:

Buying a turbocharged gas water heater will cost twice as much as an atmospheric one. But if we compare the purchase and installation as a whole, then in the absence of a chimney duct, a coaxial pipe will cost much less than building a brick chimney or laying an insulated sandwich.
Fans on models from some manufacturers are noticeably noisy.
A modern forced-air heater is a complex device; its maintenance and cleaning is best left to trained service personnel. Without knowledge and skills, it is not recommended to delve inside the column yourself to find faults.

Gas dispenser display and touch control buttons

Note. In the event of a breakdown, the electronic display of the water heater will display an error code, which can be used to determine the malfunction without resorting to disassembly.

Since we are not comparing a gas water heater with an electric storage water heater, we do not mention obtaining permits from gas services to connect water heating equipment. The procedure for registration and connection to the main line is mandatory for any gas-using installations.

But problems with installing a coaxial pipe on the façade of an apartment building are quite real. Having made a hole without authorization (even in the place required by the standards, observing all the indentations), you may encounter claims from local services, motivated by damage to the facade, drilling of the supporting structure of the house and lack of design documentation.

Advice. First of all, before purchasing such a speaker, obtain the written consent of all neighbors, since troubles usually begin with their complaints about the “stench and suffocation from the pipe.”

You can learn more about water heaters with a closed combustion chamber by watching the video:

Main disadvantages

Before you purchase the equipment described in the article, you need to familiarize yourself with its main disadvantages, among them the following should be highlighted:

energy dependence;
noisiness;
high cost;
the need to obtain approval;
condensation formation inside the outlet pipe.

If you like chimneyless geysers, then before purchasing one of the models you need to become more familiar with the disadvantages of such equipment. For example, many consumers are put off by energy dependence, because the design’s fan is powered by electricity. If it is turned off, the operation of the turbocharged column will be impossible.

You may also be put off by the fact that the equipment fan is quite noisy. Such devices are more expensive than traditional models. On average, the cost of a turbocharged unit is approximately 17,000 rubles. In order to install such a column, approval will be required from the organizations that are responsible for the supply of natural gas. You can’t do it without the permission of the neighbors who live on the floor above. Installing a column requires that the pipe be installed on the façade of the building, which may be prohibited by the architectural control service.

Criteria for choosing a geyser

In order not to make a mistake in your choice, before purchasing you should pay attention to a whole set of basic and additional characteristics of the water heater. This will help you choose really high-quality and functional equipment that suits your needs.

Key technical indicators

This category includes power, performance, material and quality of the heat exchanger and the number of sensors.

Characteristic #1 - combustion chamber type

According to the type of combustion chamber, all water heaters are divided into two categories: with an open chamber or atmospheric, and with a closed chamber or turbocharged.

Atmospheric ones are considered more durable, since such devices do not have complex automation. Turbocharged ones operate using electricity and turn on even with minimal gas pressure, but they are more expensive.

Method of removing combustion products:

Through the chimney. It is appropriate if the column is atmospheric. It is necessary to have the chimney cleaned from time to time by appropriate services.
Gas is forced out through the coaxial channel if a column with a closed chamber is installed. For this purpose, the column has a fan powered by the mains. This option is suitable for new buildings, since there is no chimney.

Owners should check the traction condition as often as possible. It is best to check with paper. This test should never be carried out with a lighter or match, otherwise an explosion may occur.

A double coaxial pipe is used to remove carbon dioxide. Through the inner pipe, recycled gas goes outside, and through the outer pipe, fresh air enters the kitchen

Characteristic #2 - device power

The amount of heated water you can get directly depends on this indicator. There is useful and consumed power. When choosing a device, pay attention to the usable power.

The optimal power indicator ranges from 17 to 50 kW. To be able to simultaneously turn on several water consumption points, the power must be at least 21 kW. For a large house, you should choose a speaker with a power of 25 kW or more

Feature #3 - Performance

Productivity is the amount of water heated by the column per minute. To correctly calculate the required performance, you need to know the pressure force.

This is quite easy to do. It is necessary to write down the number of cubes on the meter, turn on the water for 1 minute. After this time, tighten it, and then record the readings again. The difference between the second and first values will be the desired value.

If there is no meter, substitute a large container. Today there are columns with a capacity of 5-6 liters. They are suitable for apartments with low pressure and old pipes. For two or three people, 12-14 liters will be enough.

Feature #4 - heat exchanger

The durability of the column depends on the quality and thickness of the material of this part. Steel ones are durable, but heavy. Such heat exchangers are inexpensive, but are susceptible to corrosion.

Regular copper ones are short-lived. Heat exchangers made of highly purified copper have, compared to steel, greater efficiency.

Such parts should be cleaned carefully and only with special products. If you choose the wrong detergent, the part may become unusable. For example, acid corrodes copper products and they subsequently begin to leak.

The rules and methods for manually servicing the dispenser are discussed in detail in this article.

To ensure safe use for boiler users, special parts are used:

The water overheating sensor will protect you from boiling water, and the safety valve is responsible for the emergency release of water if there is high pressure in the pipes.
The hydraulic valve will protect the column parts from overheating.
The ionization and combustion sensors are triggered if gas is still flowing after the burner goes out.
The flow sensor turns off the water heater if the hot water tap closes.
The draft detector goes off if the chimney is clogged with debris to prevent carbon monoxide poisoning. And if there is no required water pressure, the low water pressure sensor is activated and the column will not turn on.

A lot depends on their quality. All these details will protect not only the device itself from breakdown, but also your health.

Ways to check traction

How to check the draft in a gas water heater? There are two ways to identify a blockage and remove it in time.

It is worth checking them before starting heating to avoid poisoning. Often in summer, plugs form in pipes. The cause is insects and birds that like to build nests in cool pipes.

Anemometer

The exhaust pipe for a gas water heater can be checked with an anemometer. He checks the speed of gas movement. It is enough to place the sensor with a fan at the chimney outlet and see the result on the screen. Compare with normal values and determine the difference.

The disadvantage of an anemometer is its high price. Cheap Chinese models will not give a complete picture, as they work with large errors. But they are suitable for everyday use.

Folk method

Take a lighter and bring it to the lowest point of the pipe while the boiler is running. In the absence of interference, the flame should be “swallowed” inside. If this does not happen, carry out cleaning work.

Rules for operating a chimneyless gas water heater

Turbocharged water heaters are the best water heaters today. Most models operate in automatic mode, have simple controls and a multi-stage protection system. Basic rules for operating turbocharged water heating equipment:

the first start-up is carried out in the presence of an inspector or other representative of the gas service;
during operation, the water heater cannot be moved further than 1.5 m from its original location;
the socket is installed away from the column with a gap of at least 0.4 m;
if there is a smell of gas in the room or the water heater malfunctions, turn off the gas supply and call the emergency service;
depending on the type of chimneyless dispensers, maintenance is required 1-2 times a year;
in a gas storage boiler for heating water with a closed combustion chamber, the magnesium anode is regularly changed, regardless of the internal structure and type, the nozzles and burner are cleaned.

Before using the water heater, you should carefully read the operating instructions and carefully follow the manufacturer's recommendations. Thus, you can extend the service life and prevent common malfunctions and breakdowns of household appliances.

Average prices per set

The average cost of the kit primarily depends on the length of the chimney and the diameter of the selected pipe.

When purchasing, please note that aluminum corrugation stretches from the original length of 0.65cm to 3m. Stainless steel products have little stretch. Average cost of products:

Aluminum - 200 rub/m;
Stainless steel sleeve – 650 rub/m.

In addition, you should purchase special metal tape, sealants and the necessary fittings.

The average cost of a complete set made of aluminum is 500 rubles, from stainless steel - 1000 rubles.

How to install a chimneyless gas water heater

The connection is made only after obtaining permission from the Gas Supervision Authority. To apply, you will need to make a project for gas supply and write an application.

If the premises meet the requirements and the technical conditions are met, a permit for the turbo dispenser is issued. After receiving official documents, the connection is made in accordance with the project diagram.

Placement and connection rules

In domestic SNiP and SP there are no rules stipulating the installation of a column with a closed combustion chamber. There are general recommendations and instructions. For this reason, the placement and connection rules are the same as in the case of an atmospheric water heater.

Regulatory documents for the installation of gas equipment in apartment and private buildings: SNiP 42-01-2002 (SP 62.13330).

To properly connect the turbo speaker, follow several instructions:

the area of the room used for the boiler room is at least 8 m², the ceiling height is 2.2 m;
It is necessary to have a window or an opening window;
the column is connected to the gas pipeline using a corrugated metal pipe, and a shut-off valve is installed;
the water heater must not be placed in the bathroom or above the boiler, or hung on a load-bearing wall of the building;
It is necessary to have natural supply and exhaust ventilation.

Detailed installation requirements are described in the operating instructions provided by the manufacturer. The Code of Practice (COP) specifies the need to comply with these recommendations. The installation instructions provide a detailed connection diagram.

To install a turbocharged gas water heater, you must obtain permission. Self-connection leads to penalties and gas supply shutdown.

Organization of combustion products removal

Flue gases are removed and air is taken in using a coaxial pipe. The rules for organizing the removal of combustion products are related to the correct removal of the chimney from the room. There are general requirements:

the length of the coaxial pipe should not exceed 3 m;
the diameter of the chimney and the outlet of the pipe in the column must match;
the passage through the wall is made larger, approximately 1-1.5 cm, the gap is insulated with non-combustible thermal insulation.

The coaxial gas water heater is installed so that the chimney has a slight slope towards the street. If condensation appears during operation in winter, the moisture will flow outside and will not damage the water heater.

Sources

https://otivent.com/turbirovannaja-gazovaja-kolonka
https://ventilationpro.ru/tekhnika-dlya-doma/otopitelnye-pribory/rejjting-gazovykh-protochnykh-nagrevatelejj-s-zakrytojj-kamerojj-sgoraniya.html
https://AvtonomnoeTeplo.ru/vodonagrevateli/725-turbirovannaya-gazovaya-kolonka-s-zakrytoy-kameroy-sgoraniya.html
https://sovet-ingenera.com/gaz/equip/protochnye-gazovye-vodonagrevateli.html

[new[collapse]2>Requirements for chimneys

The standards establish the following requirements for the installation of air ducts for geysers:

the diameter of the exhaust pipes must exceed the size of the outlet pipe;
to select the material, the maximum operating temperature is +2000C;
laying smoke exhaust ducts inside residential premises is prohibited;
the maximum permissible number of pipe turns is up to three;
the minimum length of the section without joints is more than 3 m (in new buildings at least 6 m);
the length of the outlet at the outlet of the device must be at least 0.5 m;
the distance to walls made of fireproof material is more than 50 mm, non-flammable material is 250 mm or 100 mm if insulation has been installed;
the slope of the pipe is from 0.01 away from the heating device (at least 300 per linear meter);
Only one chimney can be connected to the device;
The minimum distance between equipment is selected to be at least 0.75 m.

Models with a capacity of 10 l/min

Roda JSD20-T1

Practical performance speaker in an ultra-thin design

Expert rating:99/ 100

Among gas water heaters operating without a chimney, the Chinese-made model stands out for its more compact depth, which ensures fairly flexible installation. Roda JSD20-T1 is equipped with a gas control system and makes it possible to limit the water heating temperature.

A useful feature of the model is a reliable frost protection system. As soon as the heat exchanger temperature drops below +5 degrees, the built-in ceramic heating elements automatically begin heating the water in the tubes.

The model is maximally adapted to work in conditions of low gas pressure and is extremely sensitive to the opening of a water tap. In addition to the integral gas control, the water heater is equipped with protection against overheating and exceeding the permissible water pressure.

Specifications:

power – 20 kW;
productivity – 10 l/min;
minimum/maximum water pressure – 0.3/8 atm;
control type – mechanical;
dimensions (WxHxD, mm) – 330x515x140.

The modification is extremely protected from pressure or temperature surges, has internal control systems, and is therefore optimal for installation in problem housing with old communal communications.

Advantages

Adapted to difficult operating conditions
Easy control and setup
Ergonomic LED display
Affordable price for the class

Flaws

Heat exchanger with a short service life

Bosch WTD 15 AME

High-quality water heater with the ability to operate on liquefied gas

Expert rating:98/ 100

Another model from Bosch in the review, capable of providing hot water to homes not connected to the gas supply network. It features impeccable build quality and reliable operation. In addition to limiting the maximum heating of the carrier, the column has a flame modulation system. The option allows you to regulate the strength of the fire, strictly maintaining the set water temperature.

The heat exchanger itself is made of high-quality copper without unwanted impurities, resistant to burnout. The model is assembled conscientiously and is practically not subject to breakdowns.

Specifications:

power – 25.4 kW;
productivity – 10 l/min;
minimum/maximum water pressure – 0.3/12 atm;
control type – electronic;
dimensions (WxHxD, mm) – 300x568x170.

Bosch WTD 15 AME belongs to the Therm 4000 S series. It is characterized by economical consumption of blue fuel and has an impressive design. We can recommend this model to consumers who are willing to overpay for reliability, uninterrupted operation and a decent level of equipment safety.

Advantages

Multi-level equipment protection
High power ratings
Stylish design
High-quality assembly without backlashes or cracks
Fast heating of water up to 60 degrees

Flaws

High price

Superflame SF0420T bal (turbo)

The most suitable model for domestic conditions

Expert rating:96/ 100

The SF0420T bal turbocharged water heater is just the type of gas water heater operating without an exhaust hood, which is ideal for working with unstable water pressure. After all, the Superflame brand itself was registered in Spain; most of the brand’s products are aimed at Europe. But after entering the Russian market, the manufacturer improved the speakers to suit the realities of operating conditions in the CIS countries.

Models with capacity up to 8 l/min

Bosch WTD 12 AME

Reliable and powerful model from a manufacturer with an impeccable reputation

Expert rating:98/ 100

The modification of the Therm 4000 S series from the Bosch brand is distinguished by its standard dimensions, thanks to which the column can be placed even in a small room.

Despite its relatively modest performance, a water heater designed for one water intake point is quite powerful. Therefore, with it, the water almost instantly heats up to 60 degrees. It is also convenient that the Bosch Bosch WTD 12 AME model operates without interruption even with low inlet water pressure: the unit only needs 0.1 atm to start the heating process.

Gas consumption is also pleasing: this column consumes 2.1 cubic meters. m/h when connected to a common gas pipeline and 1.7 cubic meters. m/h when operating from a cylinder. Fuel saving is also facilitated by electric ignition, which turns on the burner only when the tap is opened.

Specifications:

power – 20.8 kW;
productivity – 8 l/min;
minimum/maximum water pressure – 0.1/12 atm;
control type – electronic;
dimensions (WxHxD, mm) – 300x568x170.

Bosch WTD 12 AME can be called the optimal model for homes with low pressure in the water supply. And working on liquefied gas from a cylinder allows you to use the equipment even where gasification has not yet been carried out.

Advantages

Economical
Control of temperature fluctuations down to 1 degree
Excellent power
Heating water up to 60 degrees
Trouble-free operation at low water pressure

Flaws

Price

Oasis B-12W

Compact and inexpensive speaker for very small kitchens

Expert rating:96/ 100

The budget speaker from Oasis has low performance, but fully compensates for it with its dimensions and low weight of 4.2 kg. It is one of the most compact in height and depth, making it suitable for small rooms or even niches. Electric ignition is carried out using batteries, which makes the device operate completely independent of the mains.

A bonus is the operation under conditions of low pressure in the gas pipeline. To start heating the model normally, a pressure of 0.02 MPa is sufficient. At the same time, the column maintains high efficiency - more than 90%. The manufacturer provides the ability to limit the maximum water heating temperature, which allows you to save gas.

Specifications:

power – 11 kW;
productivity – 5 l/min;
minimum/maximum water pressure – 0.2/8 atm;
control type – mechanical;
Dimensions (WxHxD, mm) – 290x370x120.

Oasis B-12W is installed vertically with bottom connection. The multi-level security system makes operation as reliable as possible, which is especially important for families with children.

Advantages

Compact and light weight
Undemanding to pressure in the gas pipeline
High efficiency
Reasonable price
Availability of display and thermometer

Flaws

The first malfunctions may appear after a couple of years of operation.

Vatti MR11-N

Vatti MR11-N
Miniature and very low-power speaker. Prices - from 5 thousand rubles.

Characteristics

Technical Parameter	Implementation
Type of equipment	Flow-through geyser
Ignition type	Fully electric
Water consumption	4 liters
Design features of the model	There are no electronic devices on the dashboard
Control	Fully mechanical

Rating: 2. Heated washbasin. Any theoretical advantages end with performance: the device can hardly serve one mixer.

Superflame SF0322

Superflame SF0322
“Quality Chinese”, average in price - about 10 thousand rubles.

Characteristics

Technical Parameter	Implementation
Type of equipment	Flow-through geyser
Ignition type	electrician
Water consumption	11 liters
Design features of the model	Double protection system against overheating and switching on without water
Control	Thermometer, indicators, mechanical buttons

Rating: 4. Average model.