What you need to know about the ventilation of the gas column?

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The work of the gas water heater is accompanied by a combustion process, as a result of which poisonous flue gases are released. Once inside, they pose a danger to the health and life of residents and pets. Therefore, ventilation for the gas water heater must be installed in accordance with all fire and building codes.

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1 What pipes are needed for a ventilation device?
2 Rules for installing a gas hood 2.1 Some nuances of installing the hood

3 Additional ventilation

Advantages and disadvantages of turbocharged speakers

Pros:

The installation does not require a traditional chimney.
Forced air injection increases the efficiency of the apparatus.
The operation of the column does not raise the temperature in the kitchen (or in another room where it is installed), which is especially pleasant in the summer.
Combustion air comes from outside - there is no problem of absorbing indoor air.
The closed housing of the device reduces the risk of combustion products entering the living area.

Minuses:

Any non-flue column is connected to the mains. Its volatility creates problems when the lights are turned off - it simply cannot function.
A turbine blowing air makes noise.
The prices for water heaters with a closed combustion chamber are higher than for traditional modifications. The average model costs about 15,000 - 17,000 rubles. There are also more expensive versions.
The installation of a water heater without a chimney must be coordinated with the natural gas supplier. The owner of such equipment is also obliged to obtain consent from the neighbors above. Problems may arise with the architectural control service if it is necessary to lead out a pipe on the facade of a building.
Condensation constantly forms in the pipe connecting the device to the street - in winter this can lead to its freezing.

Code of practice for the installation of a gas hood

The hood for a gas water heater is equated in technical requirements and standards to chimneys, since it is a transport line for removing combustion products.

Based on this, the same requirements are imposed on it as for chimneys:

the design temperature for the choice of material is 200 degrees;
the diameter of the exhaust pipe must be larger than the outlet of the gas column;
the vertical tube at the exit from the equipment must be at least 50 cm long (halving is allowed in some cases);
during installation, do not make more than 3 turns of the pipeline;
the withdrawal of the hood through the living rooms is prohibited;
sections of a solid pipe in new buildings at least 6 m, in old ones - at least 3 m;
the gap between the pipe and the walls of the room depends on the material of the walls: fireproof - at least 5 cm; hardly flammable, combustible - 25 cm or 10 cm (subject to additional insulation).

The installation of the pipeline for the exhaust of the gas column is carried out with a slope towards the gas equipment of at least 0.01. The walls of the room are pre-insulated. All sections of the chimney passing through cold rooms must also be additionally insulated.

Note! A separate hood is required for each unit of gas equipment. A common hood is allowed for 2 gas combustion devices of medium and low power, which are located on the same floor. Their insertion into the common chimney is carried out at different levels.

If there is no chimney in the room where the gas water heater is installed, then a main or removable pipe is mounted.It is allowed to temporarily connect gas equipment to the stove chimney if it has the necessary performance.

At the same time, it is forbidden to install equipment with forced evacuation of combustion products in rooms with stove heating, if there is no forced air flow from the outside. Here the exit is a coaxial pipeline.

How do they work

The principle of operation of chimneyless water heaters is the same as that of conventional exhaust devices. They differ only in a more advanced device and level of automation.

Work algorithm:

The usual state is standby mode. The device is waiting for a start signal. The ignition starts at the command of the control system.
When the tap is opened, the flow sensor is triggered. The gas valve opens thanks to the membrane of the water unit. Through the open path, gas begins to flow to the burner.
There are electrodes located near the burner, which, in response to the controller command, give a spark discharge - the gas is ignited. The flame is detected by an appropriate sensor - it sends information to the control unit, which stops the sparking process. At the same time, a turbine that blows air is started.
The fire, controlled by the controller, heats the water to the temperature set by the user - a special sensor also monitors this process. When the liquid is heated to the required degree, the burner power is reduced (modulation) or several burner stages are switched off.
When the hot water tap is closed, the gas stops flowing, the fire goes out - the cycle is complete.

Important points of operation

Gas water heaters have positive and negative qualities.
The positive ones include:

It can be used in houses where the use of gas equipment was not initially provided.
Exhaust-free column - no additional hood, conventional supply and exhaust ventilation is sufficient.
High work efficiency.
Due to the fact that the combustion chamber is isolated, the oxygen present in the room is not burned.
Since the combustion process takes place in a closed environment, foreign odors, fumes and exhaust gases do not penetrate into the room.

Along with the advantages, the column also has a number of disadvantages:

High cost of equipment.
Time consuming and expensive installation and connection process.
The presence of an electric motor requires a mains supply and leads to additional energy consumption.
The electric motor driving the fan blades makes a lot of noise during operation.
The coaxial chimney exits from the opposite side of the building. This can cause additional difficulties with the regulatory authorities.
The need to coordinate the installation of equipment with neighbors from above.

Device

The device of devices with forced draft repeats the design of a flow-through water heater. The water is heated by the energy of the burnt gas - natural or liquefied. The liquid is supplied from the water pipe: cold water heated by a gas burner enters the water intake point. When the tap is opened, the burner lights up, an already heated liquid flows from it. The device has a sealed closed combustion chamber. A coaxial pipe extends from the camera and communicates with the street.

The coaxial pipe has two channels: external and internal. The first serves to supply air to the combustion chamber, the second - to remove the smoke. What is the advantage of such a technical solution? In the room, you have to make only one hole in the wall, and not two - separately for input and output. A prerequisite for the operation of a turbocharged water heater is the presence of a fan that directs exhaust gases into the coaxial pipe.

Control systems

Instantaneous smokeless water heaters may differ in the type of burner:

With automatic power control - automatic burners maintain a given combustion power, so the outlet flow is stably hot, regardless of the pressure in the pipes.
With manual adjustment - in this case, the degree of heating can be adjusted with a mechanical switch. But temperature is not a constant value: it is influenced by atmospheric conditions, the temperature of the incoming stream and the pressure in the gas pipeline.

Ignition type

Columns of the "turbo" system can have:

Electric ignition: the "start" command is given by the sensor, which is triggered when the hot water tap is opened; power source - batteries or mains. Its plus is that there is no constantly burning igniter, which means that the gas is not wasted.
Piezo ignition: a spark appears at the moment of mechanical action on the ignition button. Minus - constantly burning igniter.
Hydro Turbine Ignition: A built-in generator generates electricity using the energy of the water flow passing through it. Such devices do not require either batteries or power supply.

How to choose a gas water heater with forced draft

In order to choose the right forced draft water heater for yourself, you should pay attention to a number of factors, which we will talk about below.

One of the most important criteria for water heating geysers is power. The performance of the unit depends on the power. However, you should not dwell on this indicator if you plan to use it for only one draw-off point. then a model for 20 kW - 10 l / min will suit you. For 2-3 water points, you need to buy a more powerful model - 24-26 kW, or 12 / 14l / min.

In turn, productivity is responsible for the amount of water heated over a period of time. The higher it is, the more water is heated (based on this indicator, basically, consumers choose their columns). It is also worth paying attention to that. that such columns are equipped with a horizontal chimney with an exit through the wall. The chimney is telescopic and stretches about 1 meter.

Summing up, it is worth saying that if you decide to become the owner of a forced draft gas water heater, then you need to take into account some features. This column needs to be connected to the mains, since the ignition of the burner and the operation of the fan directly depend on the supply of electric current.

It is worth taking into account the reviews that the device can be a source of noise, because the silence and the operation of the electric motor are mutually exclusive concepts. However, in the end, by installing a column with forced draft, you can always be sure that your funds have become a wise investment, because saving time and money during operation is a very important argument when choosing a water heater.

Buy a gas water heater with forced draft in a gas water heater store at a bargain price!

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What to consider when choosing a turbo column

When buying a turbocharged water heater, pay attention to the following parameters:

Thermal power - take the middle option. Do not chase powerful modifications: they cost much more, and they do not fully use your resource.
Productivity - this parameter indicates the volume of liquid heated to a certain temperature per unit of time. For comfortable use, 10-11 l / min is enough.
Each model has its own limitation on the pressure in the water pipes - if it reaches a value below a certain limit, the device simply will not turn on.
Fuel used - there are devices that can operate on two types of gas: natural and liquefied.
Chimney type - for example, the "Neva" column may have a horizontal or vertical chimney.
Type of ignition - so, for Oasis columns, ignition can be electronic or from a piezoelectric element.

How to determine the required parameters

User comfort and resource saving depend on the correct choice of the technical characteristics of gas equipment.The buyer can independently determine the required parameters:

Power. With its increase, the volume of the hot stream increases. How do I know the approximate level of power needed? Divide by 2 the value given in the device passport. The resulting total is the flow rate of liquid heated to 30 ° C per minute. If a value of 20 kW is specified, the appliance will be able to heat approximately 10 l / min. Knowing the needs of the family, each user will be able to decide whether they are satisfied with such opportunities.
Performance. We are talking about the volumes of heated liquid dispensed by the heater per unit of time. If specified: 12 l / min to 25 ° C, then this value should be added to the temperature of the original stream. So, if the temperature of cold water is 10 ° C, then in a minute the device will heat it up to 35 ° C (25 + 10) at a flow rate of 12 l / min.

Important! It is believed that for one point of water intake - a washbasin, shower or sink - there is enough capacity of 5.5 l / min.

Installation

Independent installation of gas water heaters is excluded - this should be done by specialists from the relevant services. But the connection to the water supply can be done independently. You will need couplings to ensure tightness of the joints, and a tee - it is necessary to provide hot and cold water. The user can also install the coaxial chimney by himself.

Repairs

It is undesirable to repair turbo devices with your own hands. It is allowed to independently carry out such preventive and repair work:

chimney repair;
chimney and burner cleaning;
cleaning the plumbing.

How to choose a hood for gas boilers and water heaters?

There are several types of pipes for installing a ventilation system when installing a gas column.

As a general rule, it is necessary to purchase pipes at least 11 mm in diameter. The intensity of the removal of combustion products during the operation of a gas boiler or a flow column directly depends on the diameter of the pipeline.

The best option would be to purchase pipes with a diameter of 13 mm. Wider chimneys are installed if several points of water intake are provided with more powerful gas equipment.

There are established requirements for the quality of materials for the extraction of the combustion products of the gas column. Effective, reliable and safe operation requires:

Increased smoothness of the inner walls of the pipeline (equivalent roughness no more than 1 mm) so that not only gases, but also soot can freely leave the communications. Roughness higher than the permitted parameters creates favorable conditions for retaining ash and soot, which leads to a narrowing of the pipe lumen and insufficient intensity of gas removal.
Resistance of pipes to high temperatures and aggressive attack of chemically active compounds of combustion products.

The final choice of material for pipes for the hood remains with the owner. It is influenced not only by considerations of practicality, but also by material opportunities at the moment.

Manufacturers offer pipes of different quality, price and service life:

Aluminum. Lightweight, affordable pipes have one drawback - they quickly burn out when operated at high temperatures.
The cooker hood made of galvanized steel is protected from corrosion, has a reasonable price, but when it is operated under high-temperature conditions, harmful substances can be released.
Enamelled steel hoods are a good choice. These communications are highly resistant to temperature conditions, impeccable smoothness of the inner wall, but not cheap.
The experts recognize the stainless steel hoods for the gas column as the best choice. They are characterized by a long service life, excellent smoothness, temperature and chemical resistance. There are different configurations, but the installation of a stainless steel hood is quite expensive.

The number of fittings (and therefore connections and potential air leaks) directly affects the tightness of the future hood. The density of the chimney must correspond to class B, and this is a minimum of air intake from the outside. The last parameter to choose is the exhaust pipe configuration:

conventional pipes with mounting on fittings,
corrugated, flexible,
coaxial.

Coaxial pipe is a complex structure where one pipe is inserted into another with sufficient clearance in diameter. The combustion products are removed through the inner pipe. Forced blowing of clean air from the outside into the room through the clearance between the outer and inner pipes.

Coaxial stainless steel hood has not only increased cost, but also a number of practical advantages:

The isolation of the inner pipe + cold air supply prevents the pipe from heating up during operation. There is no need for additional thermal insulation and safety is increased.
The oxygen content in the room is replenished, which "takes" the gas water heater during operation.

An alternative to the expensive steel coaxial chimney is the cheap two-channel plastic piping. However, its service life is much shorter.

Note! Most modern gas water heaters and boilers have a closed fuel combustion system. For them, the installation of a coaxial hood is mandatory.

Corrugated stainless steel pipes can be called ideal for installing a household gas hood: they are easy to assemble, have a minimum number of connections, have high corrosion resistance, and are easy to hide in cabinets. These are the most expensive and most durable chimney pipes for gas equipment.

Popular models

We took 4 models as an example. Three of them are within 10,000 rubles.

Ariston MARCO POLO GI7S 11L FFI

This is an economical flow-through turbocharged model. The new generation version is different:

stylish design;
touch screen;
multi-stage security system;
stable operation under reduced pressure.

Features of the "Ariston Marco Polo" model:

electronic ignition;
power modulation;
heating stability due to microprocessor control;
display of temperature on a digital indicator;
self-diagnosis function;
any type of gas can be used as fuel;
compactness;
stainless steel body;
control keypad and LCD screen.

This exhaustless version is adapted to the Russian operating conditions. The warranty is 2 years. Estimated price - 17,000 rubles.

Technical specifications:

Thermal power	19.8 kW
Efficiency	88%
Minimum gas pressure	13-30 mbar
Gas consumption	2.2 m³ / h
Water heating rate	(Δt = 25 ° C) - 11 l / min
Operating pressure	0.4-4 bar
Dimensions (WxHxD)	350x563x130 mm
Weight	12.5 kg

"Neva" 4505

This is one of the most popular mini speakers on the domestic market. Its cost is only 4,500 rubles. The compact device is equipped with an electronic ignition, reliable and easy to use. Works on all types of gas: natural and liquefied. Service life - 10 years, warranty - 2 years.

Technical specifications:

Thermal power	10 kW
Efficiency	88%
Minimum gas pressure	—
Gas consumption	1.5 m³ / h
Water heating rate	(Δt = 25 ° C) - 6 l / min
Operating pressure	0.2-7.5 bar
Dimensions (WxHxD)	540x350x185 mm
Weight	7.5KG

"Vector" JSD 11 N

Column ignition is electronic. It is inferior in performance to many competitors, but compact - it is easy to place it in a cramped kitchen. The miniature heater is equipped with a copper heat exchanger with anti-corrosion coating. There is a gas control system and overheating protection, shutdown is also provided in the absence of a sufficient level of traction. The cost is about 5,000 rubles.

Specifications:

Thermal power	11 kWt
Efficiency	88%
Minimum gas pressure	—
Gas consumption	1.5 m³ / h
Water heating rate	(Δt = 25 ° C) - 5 l / min
Operating pressure	—
Dimensions (WxHxD)	270х370х140 mm
Weight	4.5KG

Grandini GWH JSQ24-С

The semi-turbo version from the Italian brand heats the water quickly. Works in auto mode, ignition is done from batteries. For combustion, air is taken from the room, therefore, good ventilation must be provided.

Benefits:

works at low gas pressure;
there is a water pressure stabilizer;
innovative burner design;
the heat exchanger has a special protective coating;
simplicity of design and easy installation.

Specifications:

Thermal power	24 kWt
Efficiency	—
Minimum gas pressure	—
Gas consumption	2.25 m³ / h
Water heating rate	8-12 l / min
Operating pressure	0.2 atm
Dimensions (WxHxD)	330x620x185 mm
Weight	—

The cost is within 8,000 rubles.

BOSCH

Model: Bosch Therm 4000 S WT 13 AM 1E

Geysers with forced draft of this model, all have a closed type of combustion, which is designed to supply apartments and private houses with hot water without any problems. Experts advise installing such a model if there is no chimney in the house. A geyser of this type comes with the function of the necessary smoke removal, that is, there is already a fan in the system that removes the processed gas. All gases escape thanks to the coaxial chimney. For operation, a connection to 220 V is required. It can work even at a low pressure of 0.3 bar.

Advantages and advantages:

you can control the temperature of water heating, starting from one degree;
even if the water in the set changes, its temperature will be automatically maintained;
the gas water heater has a heat exchanger, which is made of high-quality copper;
the atmospheric burner is made of stainless steel, and can easily operate on both natural gas and liquefied gas;
has an ionization sensor in the system that monitors the flame;
safety sensor that protects against overheating;
a display that shows both the temperature and errors, if any;
warranty for any boilers of this company - two years;
the set contains all the parts to fix the device;
production Portugal.

Minuses:

-It is necessary to frequently clean.

Rating: 4, 5 out of 5.

Model: Bosch Therm 6000 S WT 24 AME

The column operates on a closed combustion system. Designed to supply hot water to any type of premises, be it an apartment, a house or a small business. Also, manufacturers advise installing this model if there is no chimney in the room.

This is because, in its configuration, such a model already comes with a system that takes all the processed gas using a specially installed fan. Absolutely all waste residues are removed from the system thanks to a coaxial chimney. The uniqueness of this model lies in the fact that it has a high-quality and strong water heater, which, in essence, is intended for commercial use. It can be combined into a large cascade of 12 pieces. Operation from the network.

Advantages and advantages:

works at the lowest pressure of 0.3 bar;
you can control the temperature from two degrees;
if for some reason the water pressure and its flow change, the column tries to maintain the water temperature;
a heat exchanger is available, which is made of copper of the highest standard;
a valve that constantly monitors the ratio of gas and air in the system;
the column can work perfectly on natural gas and reduced gas;
mandatory presence of a flame tracking sensor;
there are draft sensors, a closed case, and sensors that measure the temperature of both hot and cold water;
LCD quality display to show temperature and operating errors;
warranty - two years;
production - Portugal.

Minuses:

- if there is no cold water, then there is no water in the house at all; -the need to periodically clean.

Rating: 5 out of 5.

Model: Bosch Therm 8000 S WT 27 AME

Geyser with forced draft of closed combustion type.Great for any type of building, especially if there is no chimney. The uniqueness of the entire line of these dispensers lies in the fact that they already have a compulsory function of removing the residues of the treated gas in the system. Everything happens using a coaxial chimney. The high capacity condensing water heater is most suitable for commercial use, but is also great for home use (if the area is large).

The column can be connected in a large cascade of 12 pieces. A high percentage of efficiency lies in the use of condensation technologies that can reach an efficiency of one hundred percent, generating a higher percentage of heat. Operates at a minimum water pressure of 0.3 bar.

Advantages and advantages:

you can control the temperature from two degrees;
if for some reason the water pressure and its flow change, the column tries to maintain the water temperature;
a heat exchanger is available, which is made of copper of the highest standard;
a valve that constantly monitors the ratio of gas and air in the system;
the column can work perfectly on natural gas and reduced gas;
LCD - display, which displays both the temperature and errors, if any;
warranty for any boilers of this company - two years;
the set contains all the parts to fix the device;
production Portugal.

Minuses:

- big sizes; - periodic cleaning.

Rating: 4, 5 out of 5.

Advice: before you buy the device you need, you need to think carefully about what exactly you want to expect from it. To select a column, you need to start from: its power, safety, operating system, what type of ignition, what other additional functions are there and where does the entire product that is burned go.

comparison table

What are semi-turbo speakers

Semi-turbo models are a cross between turbocharged and classic versions. In them, combustion air is taken from the premises, and the combustion products are discharged outside.

Let's give an example of a semi-turbo water heater from the Termet brand. Characteristics and price of the Termet Aquacomfort Turbo G19-03 model:

Thermal power	19.2 kW
Efficiency	93%
Minimum gas pressure	—
Gas consumption	2.53 m³ / h
Water heating rate	(Δt = 25 ° C) - 11 l / min
Operating pressure	20 kPa (0.2 bar)
Dimensions (WxHxD)	360x585x220 mm
Weight	16.5 kg

Works on any type of gas. The cost is about 7,000 rubles.

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.

Advantages and advantages:

works 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 change, the column tries to maintain the water temperature;
a heat exchanger is available, which is made of copper of the highest standard;
a valve that constantly monitors the ratio of gas and air in the system;
control using buttons (modern);
warranty period - two years;
the set includes parts to which you can attach it

The kit does not include coaxial pipe and LPG conversion kit, purchased separately. Country of origin China.

Minuses:

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

Rating: 4 out of 5.

Model: OASIS TURBO GLASS BG20

This model is perfect for any room, has a high efficiency. It works according to the closed combustion scheme and it is best to install the column if there is no chimney in the house.

Manufacturers have provided for the outlet of the processed gas and therefore installed a special fan that takes all the gas. Then they are removed using a coaxial pipe. Powered by 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 install the transition system immediately upon 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;
overheating fuses;
highest security measures.

Minuses:

- production and assembly takes place in China. - there is no transition system and waste pipes in the set, they must be purchased separately.

Rating: 4 out of 5.

Testimonials

Positive

Consumers in turbocharged versions like the versatility - they can be installed in any room, regardless of the presence of a chimney. In a room where such a device works, normal air humidity is maintained and there are no smells associated with the combustion process.

Negative

Many of the nuances of chimneyless water heaters cause serious dissatisfaction among consumers. They do not like the noise of the device, dependence on the power supply and the complexity of its installation - they have to drill a hole in the wall. Upstairs neighbors are often unhappy with the smell of gas and fan noise, which can also create problems for owners of turbo devices. Before buying such a model, you need to objectively assess all the circumstances associated with its work.

Examples of reviews

Ariston MARCO POLO GI7S 11L FFI: Valery O., Dzerzhinsk

It has been working for six months already. There were no failures. Attractive appearance - does not spoil our new kitchen. There is one caveat - the amount of hot water. I didn't understand how this function works - either the fire should turn off when the bath is full, or I myself should turn it off when the signal comes in. I will figure it out again. As for the power, it is my own fault - I calculated it incorrectly. It was necessary to take a 16 liter model for our needs, since 11 liters was not enough.

Roda JSD20-T1: Anastasia M., Luza

The thing is not bad, it heats up quickly, the flow at the outlet is hot. The problem with pressure is that it is constantly changing with us. If we open two mixers at the same time, the burner immediately goes out, and then ignites again. We invited the masters - they said everything correctly, so we just had to open the taps in turn. The fan makes a little noise - this is a minus. But there are no problems with exhaust gases and combustion smell.

Columns of a turbocharged type will interest homeowners in which there are no traditional chimneys. When buying such models, it is important to objectively assess the advantages and disadvantages that await the owners of such devices.

ARISTON

Model: ARISTON MARCO POLO M2

This model works on the basis of an open combustion type and is best suited for use in apartments and private houses. This model of the column also has a forced gas removal system using a built-in fan that is located in the system. All residues are removed thanks to the coaxial chimney. For operation, it is necessary to be connected to the network, it works at a minimum pressure of a 0, 4 bar.

Advantages and disadvantages:

can work both on natural gas, also without problems on liquefied gas;
many features that protect the reliability and quality of the speaker;
overheating protection two-level;
practically zero noise level;
reverse thrust protection;
new LCD display that constantly shows temperature and code errors;
control using buttons (modern);
warranty period - two years;
the set includes parts to which you can attach it.

The kit does not include coaxial pipe and LPG conversion kit, purchased separately. Country of origin Italy, China.

Minuses:

- the set does not include the coaxial pipe itself, you will need to buy it yourself; -and a kit thanks to which you can reconfigure the column for liquefied gas.

Rating: 4 out of 5.

Advice: it is necessary to remember that the time during which the column will heat a certain amount of water will depend on the power of the equipment.The higher this figure, the less you will have to wait as a result. The power is determined by the number of people who will use hot water. There are only 3 types of speaker power:
26-28 kW;
20-26kW;
17-20 kW.
The third power is the smallest of the entire list, this device is quite enough for use by one person who will constantly wash and wash dishes. If you need about 15 liters to pass through the column in one minute, then you need a second power column. Fifteen liters is the average percentage of water per minute from a family of four.

comparison table

Advantages of Chimneyless Water Heaters

As we 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 pressurized 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 device to the outer wall and bring it outside by making a hole.

It looks like a coaxial chimney laid through the outer wall

For reference. If necessary, the coaxial pipe can also be brought out to the roof of a private house, laying it vertically inside the finished shaft or directly through the ceilings with lining of non-combustible materials. Details on connecting chimneys to gas columns are set out in this article.

Now let's list other advantages of "smokeless" gas heaters:

Increased efficiency and economy in comparison with traditional household appliances for hot water heating;
Thanks to the closed chamber, the ingress of harmful gases and unpleasant odors into the premises is excluded;
To install a water heater, it is enough to organize the usual supply and exhaust ventilation, since it is impossible to completely do without an exhaust hood. But you don't have to puzzle over how to arrange the supply of fresh air for combustion in the room.
The high degree of automation of the turbocharged column makes it very easy to use.
The ability to use not only natural, but also liquefied gas as an energy carrier. True, this requires a special hood, arranged in the lower area of the room (propane is heavier than air and spreads across the floor).

The device is closed on all sides, from above there is a branch pipe for connecting a coaxial pipe, and from the bottom - fittings for water and gas
In addition to several sensors responsible for the safety and maintenance of the water temperature for the needs of hot water supply, the columns with forced air injection are equipped with an anti-freeze system for the heat exchanger. 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 the turbocharged column can 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 not known what will happen to cold water pipelines if they are made of steel or polypropylene.

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

Condensing column device with cylindrical burner