How to choose a gas heating floor boiler. Types of gas burners. atmospheric and turbocharged
In most cases, country houses in the central regions of Russia are built near the passage of gas pipelines. Therefore, the majority of consumers choose for heating gas boilers with water as a heat carrier. The modern market offers great amount devices that differ in many ways.
Gas heating boilers for the home
Devices running on natural or liquefied gas do not have any special differences. They are divided according to other criteria:
- At the place of installation - wall, floor and parapet devices.
- By the number of circuits - one or two.
- According to the method of ignition of the burner - a piezoelectric element or electric ignition.
- By type of traction - natural or forced.
- By power - single-stage or two-stage.
- According to the type of burner - atmospheric or inflatable.
- By type of combustion chamber - open or closed.
- According to the material of the heat exchanger - steel or cast iron.
These are the main parameters by which gas units can be classified. But modern manufacturers still produce a lot of models and brands that differ in the presence or absence of additional functions.
Solid propellant double-circuit boilers
gas boilers floor type- traditional units with high power. They are used to heat any premises, the area of which goes far beyond the scope of an ordinary residential building - industrial and public buildings and structures. In addition to heating floor standing boilers if necessary, they can heat water for domestic needs and for a warm water floor. To do this, one or more circuits are installed in the boiler. Therefore, the weight of floor devices can reach up to 100 kg.
The heat exchanger in floor boilers can be made of cast iron or steel.
Note! When using a floor-standing gas device in a house, it is necessary to allocate a separate room for its installation - a boiler room, which should be equipped with a chimney and a ventilation system.
At the same time, the height of the chimney pipe must be at least half a meter higher than the roof ridge, which is required for better traction. In addition, the room in which the gas boiler is installed, for security reasons, must have an entrance door at least 80 cm wide, facing directly to the street.
There are certain rules for installing gas devices of this type. And the gas boiler itself should be installed and connected to the main gas pipeline only by specialists who have the necessary permits - a license for the right to carry out such work.
Wall mounted gas boilers
Wall units appeared relatively recently and immediately gained wide popularity among the population. This is facilitated by their attractive appearance and compact size, allowing you to place the unit in the kitchen or in other small spaces.
Despite their small size, these devices have all the functionality that floor structures but have less power. A small and beautifully designed case hides a burner and an expansion tank, a pump for forced circulation of the coolant, a pressure gauge and other automatic devices that allow you to use the wall mount with maximum efficiency. gas equipment.
Like a floor-standing device, a wall-mounted boiler can not only heat a room, but also produce hot water. The control of such units is fully automated, which allows you to set certain parameters for the operation of the entire heating system. Can be installed temperature regime for different times of the day, and when the gas supply is interrupted, the device turns off independently and turns on automatically when the gas supply is resumed.
Parapet gas boiler Kolvi
These devices are called smokeless boilers, and they are the middle link between wall and floor units. They do not require a chimney, since the products of combustion are removed using coaxial chimney, arranged directly in the outer wall.
Parapet boilers can be located anywhere in the room - even under the window. They are mainly used for heating small houses and apartments in high-rise buildings where it is not possible to arrange a vertical chimney channel. Their power varies between 7-15 kW, but, despite such a small indicator, they, along with space heating, successfully produce hot water for domestic needs.
Note! The advantages of such devices include the fact that when the gas burner is operating, oxygen is not taken from the living quarters, which only benefits the residents.
The heat exchanger of the parapet boiler is made of 3 mm steel.
The uniqueness of these designs also lies in the fact that heating and hot water supply can be connected to the gas main and pipelines from any side. This design of the parapet boiler heat exchanger allows it to be installed in kitchens of a small area, where it organically fits into the space.
What does one or two circuit boiler mean?
When choosing a gas heating boiler, the homeowner must first decide why he needs such a device - to heat the house in winter time or even have hot water.
For a water heating system, a device with one circuit is quite suitable. You can, of course, connect a separate boiler, which will heat water for domestic needs. But this will take up extra space and increase the cost of installing equipment.
Domestic gas heating boilers with two circuits will better cope with the task of heating a house and simultaneously heating water. In addition, such devices will take up much less space in the room, and in the end the cost of the equipment will be lower, given that there is no need to purchase a boiler and install it.
A device with two circuits can operate in instantaneous water heating mode or have a built-in boiler inside. Flow heating is beneficial when the need for hot water small. Boilers with a built-in boiler are preferable for a large family, when the water consumption increases according to the number of people living in the house.
Type of traction - what is it?
All devices operating on natural or liquefied gas can be natural draft or forced.
Natural draft units
Gas wall-mounted double-circuit boilers
Natural draft implies the consumption of air necessary for combustion of gas directly from the room where the gas boiler is installed.
When gas is burned, water is formed in the form of steam and other chemicals, which are discharged outside the premises using a vertical chimney. Surely, many could observe wisps of smoke over the roofs of houses in winter, although furnace heating in such houses has long ceased to exist, except for fashionable fireplaces. It's not smoke, but hot steam released during combustion of the gas.
Devices with this method of removing fuel combustion products are also called atmospheric boilers. Their cost is low compared to other analogues, and they are simpler in design.
Advantages of atmospheric devices:
- energy independence
- low cost
- noiseless operation
The disadvantages include the fact that during periods of pressure drop in gas pipelines, the operation of the devices leaves much to be desired. There is a risk of burning gas burners, since the flame at low pressure can go inside the burner or even die out. Unstable pressure in the lines leads to excessive fuel consumption, which undoubtedly affects the wallets of consumers.
Forced draft devices
They are also called fan or pressurized boilers. They are equipped with a closed combustion chamber, and the products resulting from the combustion of gas are removed using built-in fans.
These devices have so far a short history, since they appeared on the market not so long ago. However, their benefits have already been appreciated by many consumers around the world. The fact is that the removal of combustion products is carried out not through a traditional vertical chimney, but through a special outlet called coaxial. In addition, oxygen, which is so necessary for gas combustion, is not taken from the room. It enters from the outside of the house thanks to the operation of a fan built into the coaxial chimney.
The design of a coaxial chimney, called a "pipe in a pipe", consists of two pipes of different diameters, inserted one into the other.
Important! Combustion products are discharged through a pipe of smaller diameter, and fresh air is supplied from outside through the space between the large and small pipes.
The advantages of such devices:
- They do not burn oxygen in the house, so there is no constant draft.
- No vertical chimney required.
- Stable operation even with a decrease in pressure in the main gas pipelines.
- Reducing installation and operating costs.
- Possibility of installation in any room.
The disadvantages of such equipment include noise from the operation of the fans, relatively high cost and dependence on the power supply.
Which heat exchanger is better - steel or cast iron?
The heat exchanger is the main element in the design of the heating device. And here, when deciding which is better, opinions are divided.
Cast iron structures
Cast iron heat exchanger
Cast iron is more durable than its steel counterpart. But it is much heavier and is used mainly in floor-type boilers. At the same time, a cast iron heat exchanger is less prone to corrosion due to the wall thickness.
According to the duration of operation of a cast-iron and steel boiler, the terms are as follows:
- cast iron - 30-40 years
- steel - 15-25 years
Cast iron heat exchanger is more resistant to chemically active substances. And this means that it can be used in systems where the coolant is antifreeze or other similar liquids.
Possessing greater inertia due to its mass, cast iron retains the accumulated heat longer, since the design of the heat exchanger of this material is made in the form of several sections.
The disadvantages of a cast iron heat exchanger include:
- Excessive brittleness of the material, which requires care during its transportation and installation - microcracks can form in its structure upon impact.
- Demanding on the composition of the coolant, as hard water creates a risk of rapid failure.
- The cast iron heat exchanger is sensitive to the difference in water temperature at the inlet and outlet. So submit too cold water it is highly discouraged, and in order to avoid such a situation, a coolant temperature control unit is arranged at the inlet.
- There is a risk of destruction of cast iron during constant overheating, therefore, constant monitoring of the temperature of the coolant is required.
Important! Despite the fact that boilers with a cast iron heat exchanger are more often used where wood acts as a heat source, they are easily converted to natural or liquefied gas by replacing the burner.
Steel heat exchangers
Tubular heat exchanger
Steel structures are lighter in weight and have a more attractive appearance, so they fit better into the interior of the room.
Steel, unlike cast iron, is a more ductile material that is not afraid of mechanical stress. Its advantages lie in the following characteristics:
- resistance to temperature fluctuations
- transportation and installation are not difficult
The disadvantage of steel heat exchangers is the possibility of corrosion. However, this disadvantage is eliminated by proper installation and operation. The main thing is to prevent the coolant temperature from dropping below the “dew point”, which should be taken care of automatic system boiler control.
Copper devices
Appeared on the market gas appliances where the heat exchanger is made of copper. Naturally, the cost of such units is much higher than all known ones. However, it is offset by the mass of advantages of such a device:
- Due to the properties of copper, the walls are heated evenly without local overheating of the coolant.
- The minimum amount of sediment and scale inside the copper heat exchanger.
- Due to the low specific gravity of copper, both the heat exchanger and the boiler itself have a low mass.
- Copper is resistant to corrosion.
- The coolant in such devices moves at a higher speed, which does not allow scale to form on the walls.
- High efficiency.
- It turns out that such heat exchangers, apart from the high price, have practically no drawbacks.
Ignition type
Electric ignition of the boiler
You can start a household boiler in one of two ways:
- using the manual method - matches or a lighter
- by built-in modern devices - piezo ignition or electric ignition
Electric ignition allows you to save blue fuel, since with this method there is no constantly burning wick (igniter). And for a year, such a device can burn up to 100 cubic meters of gas. If the power supply suddenly stops, the boiler stops working and turns on automatically as soon as the power supply appears.
Piezo ignition requires manual activation of the boiler, but its advantage lies in the independence of the availability of electricity.
Types of gas burners
AT heating devices two types of burners are used:
- atmospheric
- supercharged, or fan, modulating, mounted or replaceable
Note! Atmospheric burners are usually included in the composition and cost of the boiler, while mounted ones are purchased separately.
The first type of burners has the simplest device and operates almost silently.
Pressurized allow you to create a more economical mode of operation of the boiler and maintain the desired temperature of hot water both in the coolant and in the hot water supply system. Such devices are characterized by high efficiency, although their cost is much higher than atmospheric ones.
If atmospheric burners are installed in heating units with a power of up to 80 kW, then pressurized ones can be used in devices with a power reaching several thousand kW. This circumstance enables the consumer to choose a household gas boiler with optimal power.
Power of heating devices
Wall-mounted double-circuit gas boilers
Houses in terms of power can be single-stage or two-stage.
Single-stage devices operate at one constant power level, which is inefficient in terms of gas consumption. After all, the house is heated only 5 months a year, and at the same time, the full power of the operating equipment is not always needed.
Two-stage devices allow:
- regulate the flow of gas, which leads to savings
- reduce the number of switching on and off the boiler, which leads to its long operation
- limit the amount of harmful emissions into the air around us
In addition to two power levels, gas equipment is equipped with a smooth switching of the consumed gas, which is called modulation. This function allows you to better save fuel consumption and to share the boiler and boiler of different capacities, installed separately.
It is important to know that gas devices with a power of more than 30 kW should be located in separate rooms with an individual exit to the street, a chimney and ventilation.
Conclusion
All domestic gas boilers are designed for space heating, regardless of their purpose - whether it is a city apartment, a country cottage or a small a private house in the village. Modern devices can still produce domestic hot water for the household needs of the homeowner and his family. Therefore, when choosing a device, it is necessary to pay attention to its functionality. Among them, an important place is occupied by the material of the heat exchanger and the power of the equipment, the dependence on the power supply and the type of chimney.
Wall mounted gas boiler- This is one of the most economical heating options. This device allows you to regularly provide heat in the house, regardless of the availability of electricity and other fuel resources. It does not require a place to store fuel, a separate room, and also does not create additional inconvenience.
Wall-mounted gas boiler - an economical and practical option for every home
Everyone knows that the wall option gas boiler- one of the most popular heating options in our country. This is due to the availability and low price of gas, as well as the variety of models presented by both domestic and foreign manufacturers.
Mounted boiler has a number of advantages:
- Since the release of wall models has been launched relatively recently, all variations are modern devices made in accordance with all norms and requirements. They contain the latest developments that allow you to save money, as well as ensure the highest level of security.
- Many models have additional equipment, the ability to heat water, connect sensors, a thermostat and more. All this makes the operation process more comfortable.
- When broken or serviced, wall boiler does not need to be dismantled. This is due to the location of all key parts in front of the case, which provides direct access when removing the cover.
- Relatively low power (up to 30 kW on average) makes a gas boiler an ideal choice for a private house or cottage. This limitation allows maximum concentration of all degrees of protection, convenient control and monitoring in this device.
- Another important plus is the low cost of the device, ease of maintenance, as well as a wide range of models presented on the domestic market.
In addition, gas mounted boilers are lightweight, easy to install, and do not require any additional operating conditions.
Gas mounted boiler: buy a suitable model without problems
To choose perfect option purchases, first of all, you need to decide on the type, type and other parameters that distinguish them.
The first step in the selection should be the type of operation of the device. It can be single-circuit, and provide heat in the house, or it can be double-circuit, also providing hot water. The second option will be an ideal choice for a private house in which there is no hot water supply.
As you know, there are two main types of double-circuit boilers:
- Bithermic - is a design consisting of two tubes located one inside the other. They have different diameter, and the coolant flows through one, and water for technical needs flows through the other. Such a system intensively heats the coolant, which transfers heat to process water.
- Duothermic - have two systems independent of each other, each of which heats the DHW water, or the coolant, respectively.
In addition, when choosing, it is important to take into account such a parameter as power. In this case, it ranges from small values of several kW, and reaches about 30. It is worth noting that the wall-mounted boiler is limited in power, so it will not suit large rooms. The calculation of the required power must be made taking into account such parameters as the area of \u200b\u200bthe room, the height of the ceilings, the presence of windows, and their number. In addition, the condition of the roof, as well as the presence of thermal insulation, plays an important role in choosing the power value.
Wall-mounted options for gas boilers have certain disadvantages, although it is easier to call them features, since when certain conditions they do not affect the operation of the heating system at all:
- Shorter service life compared to outdoor options.
- Limited power due to the small size of the device.
- Limited range of models compatible with antifreeze fluids.
- The need to use water that meets the requirements as a heat carrier.
In a small house or cottage, low power can hardly be called a disadvantage, as is the restriction on the use of antifreeze in areas where the heating system does not freeze through.
Gas mounted boiler: price and purchase
If you need a new wall-mounted boiler, buy it can be found in our online store. We have presented various models of domestic and foreign production, differing in the type, type of coolant used, as well as power, which varies from the lowest - 3 kW, to the maximum - 70 kW. Therefore, you can buy boilers from us both for a large house and for a small cottage.
You can buy a mounted boiler from us, the price of which will not exceed 6000 rubles. We also offer optional equipment, for most models. These are wireless control panels, street and room temperature sensors, temperature controllers, thermostats, timers and much more.
In order to make the most accurate choice, you can contact our managers. They will help you calculate the required power, advise correct option that suits your heating system. In addition, they will help you make a purchase and arrange delivery in the most convenient way for you.
Modern gas heating boilers are one of the most profitable options for country house. Natural gas remains the cheapest type of fuel, and since almost every large settlement is now gasified, this solution is the most popular.
Gas heating boilers differ as follows:
Gas heating boilers- an excellent option not only for heating the house, but also to ensure it hot water. This technique has other advantages, we will consider them in more detail.
Advantages of gas boilers
A gas boiler for the home is a convenient solution, as it allows you to ensure stable operation without human intervention and extra costs. In addition, there is no need to look for a place to store coal or fuel. Here are some additional benefits:
- Economic benefit. The use of such equipment is cheaper than electric and solid fuel models.
- Convenient use. Gas double-circuit boilers of correctly selected power provide all the needs of the family for hot water and heat supply.
- Environmental friendliness. Gas burns without emitting soot and soot, in addition, gas floor-mounted double-circuit boilers are undemanding to maintain.
- Continuous work. If the flame goes out for some reason, the electronics will ignite it on their own. This will prevent gas leakage.
Varieties of gas boilers for heating and hot water
Floor and wall gas boilers
Widespread use of gas wall boilers. They take up little space, they can be installed in a city apartment, and in a country house, and in country house. Gas floor boilers will become good decision for a cottage, where you can allocate a special room for the boiler room. Powerful equipment will provide heat to a building of any area.
Note! Gas floor single-circuit boilers may have a combustion chamber open type. Care must be taken to comply with all fire prevention measures.
Single-circuit and double-circuit gas boilers - what's the difference?
Gas wall-mounted single-circuit boilers are a good choice if the equipment needs to be used only for heating. The problem with hot water in this case must be solved differently. Gas single-circuit boilers can be connected to a chimney; in this case, combustion products are removed using natural draft.
Gas double-circuit boilers can be used both for space heating and for hot water supply. It's universal heating appliances for a country house or cottage.
What brand of gas boiler is better to choose for a home?
Buy a gas boiler in Moscow affordable prices you can in our company. We offer products of well-known manufacturers that have managed to establish themselves in many countries. By contacting us, you can purchase the following equipment:
- Protherm gas boilers. The Czech company has become one of the recognized market leaders. It sells a wide range of different equipment. The products are very reliable and easy to use.
- Gas boilers Baxi. These are products of the European concern BDR Thermea, which has representative offices in many countries. The brand gained popularity due to the innovative approach to production and the use of the most modern technologies.
- Bosch gas boilers. The Swedish brand has become widely known for a long time. European quality can be trusted, and a wide range of models will allow you to make the right choice.