Gas boiler closed chamber. Rating of gas flow heaters with a closed combustion chamber. Advantages of geysers with a closed combustion chamber
Gas water heaters (or boilers) are a special category of electrical appliances designed specifically to produce hot water. These reliable and relatively inexpensive devices avoid the well-known problems associated with the lack of district heating or emergency shutdowns.
The gas boiler can be produced in two versions: flow and storage. In the first type of devices, water is passed through a heating element direct flow and immediately enters the outlet distribution unit (for supply to the consumer). A geyser works according to the same principle, in which water is supplied to the heating unit by gravity and after a slight heating it is immediately removed from it.
In gas storage water heaters, water is heated for a certain time in a capacious specially designed for this purpose. tank built directly into the body of the unit. The capacity of the built-in tank can be from 50 to 300 liters.
Direct heating of water is carried out in a special heat exchanger, which includes a gas burner of a special design, through which the liquid accumulating in the tank is gradually heated. Thus, gas water heater accumulative type provides smooth heating of the liquid filled in it, used only after reaching the temperature set by the user.
Waste from fuel combustion is removed from the gas storage boiler by means of a special outlet channel, designed in the form of a separately laid pipe. In the kit of any unit of this type there is a whole set of measuring and recording sensors that monitor the operating parameters of the coolant and the ignition system.
In addition, in the boiler for heating water, the burner is switched on and off automatically. The liquid entering through the inlet pipes initiates the supply of gas fuel, after which it is heated to the required temperature. Upon reaching a certain temperature mark, a sensor installed in the system is triggered, which instantly stops the gas supply. After that, the water heating stops immediately.
Types of boiler devices
Different types of gas boilers for heating water may differ in the following technical characteristics:
- According to the type of gas chamber of the boiler unit, which can be open or closed.
- According to the ignition mechanism used in it, which operates either from a piezoelectric element or from a 220-volt household electrical network.
- According to the method of mounting the device itself, which can be located either on the floor or on a wall mount (hinged version).
Consider each of these types of heating units in more detail.
with open access
A gas boiler, in which thrust is formed due to open access, has a combustion chamber operating on a similar principle. During its operation, the oxygen necessary for burning gas fuel comes directly from the environment (from the room where the unit itself is located). 
The resulting gaseous waste is discharged through chimney, laid along the outlet shafts available in the walls. Units with an open combustion chamber are much cheaper than other models, but significant costs will be required to equip a reliable and efficient exhaust system.
That is why, before choosing a gas water heater of one type or another, it is imperative to take into account the method of generating thrust in its chamber.
With closed working chamber
A forced draft hot water boiler is a better option than the previous one. Its built-in chamber is equipped with a powerful electric pump, with the help of which gaseous waste is forcibly removed from it.
This type of heating unit does not need a separate ventilation chamber, since the air necessary for combustion is taken directly from the room itself.
This factor for owners of private houses, for example, plays a decisive role when choosing a particular model.
With piezo element
To start up a direct heating gas boiler, there is no need to use auxiliary tools. The fact is that each of these products necessarily has a start button, after pressing which it starts working.
Devices with piezo ignition seem to some buyers to be outdated samples, but they are still in some demand, due to their relatively low cost.
With electric ignition
Individual users would like to purchase the most "advanced" model of a gas water heater equipped with electric ignition, which is activated automatically when the tap is opened with cold water.
A gas boiler with electric ignition is much more convenient than all other models, since its device allows you to economically consume the fuel entering the unit.
At the same time, such a system reliably operates both from the electrical network and from a rechargeable or simple battery of a standard type.
Floor mounted
The floor-standing option for installing a gas water heater is used in cases where the selected 
The unit is of considerable size and weight. Before buying a massive product, you need to think in advance about preparing a separate room for its placement.
Important! When looking for a suitable room, you should consider the issue of connecting the gas main.
As a rule, boilers of this type are more suitable for private residential buildings, the owners of which have no other way to supply the family all year round. hot water. In most city apartments, the use of such a unit is almost impossible.
Wall placement
Mounted boiler-type water heaters, as a rule, are compact in size and can be placed directly above toilet bowl.
Residents of private houses connected to the gas pipeline often prefer to use gas not only for heating their homes, but also for heating water. This decision is more than justified, because gas is a fairly cheap fuel. Thus, hot water supply, provided with the help of gas equipment turns out to be very profitable for the family budget.
If you decide to heat water in this way, then you have two possible options – gas boiler or gas column. The first device is a storage type water heater, and the second is a flow type. Today we will talk about storage gas water heaters: their main characteristics, varieties and features of operation.
Device and principle of operation
Storage water heaters, unlike instantaneous ones, heat water in advance. Heating takes place in metal tank, which is the main part of the design of any boiler. The size of the tank depends on how much water it is designed for. Domestic boilers with a capacity of 50 to 300 liters are on sale.
The water in the tank is heated by a heat exchanger. Most often it is a steel or brass coil. It is located at the bottom of the tank or distributed over almost the entire surface of the device. The coil receives heat from a gas burner, which is located at the base of the water heater in a special combustion chamber equipped with a flame tube.
In addition to all of the above, the design of the gas boiler contains heat-insulating elements, pipes for supplying and discharging water, as well as a variety of sensors.
The tank is filled with water automatically. When a fresh portion of water enters the tank, the gas burner turns on, the heat from which exits through the flame tube and heats the tank. As soon as the water in the tank heats up to the desired temperature, the sensor is triggered and the gas supply stops.
You can get even more information about gas boilers from the following video.
Kinds
There are several types of storage gas water heaters.
Such devices are classified according to the following criteria:
- combustion chamber type: open/closed;
- type of ignition: piezo ignition / electric ignition;
- installation method: floor / wall.
Below we will take a closer look at each variety of this kind of device.
With open combustion chamber
Open draft gas boilers are equipped with an open combustion chamber. They work according to the following principle: the air necessary for combustion comes directly from the room in which the water heater is installed. Combustion products are discharged through a separate pipe - a chimney, which should be equipped in advance.
This type of gas boilers is cheaper, but installation ventilation system is quite expensive, so from this point of view, the next type of water heater is more economical.
With closed combustion chamber
If you do not have the opportunity to equip a chimney in the house, the only possible way out is to buy a forced draft boiler. Such devices have a closed combustion chamber equipped with a system for removing combustion products. For this, a special pump is used, which draws out the smoke.
For boilers of this type, it is not necessary to purchase additional ventilation, since they do not take oxygen from the room. That is why the owners of private houses usually give preference to them.
With piezo ignition
To ignite modern gas equipment, there is no need to use matches or a lighter. Even the simplest models of gas boilers start heating after a simple push of a button. Water heaters that are not equipped with an automatic heating function belong to the class of devices with piezo ignition. Many consider such devices already obsolete, but they are losing their popularity due to their low cost.
With electric ignition
More modern models of storage gas water heaters are equipped with an automatic ignition system that starts independently when the water tap is turned on. Such models are more convenient to operate, moreover, they consume fuel more economically. The electric ignition system is powered by electricity or batteries.
floor standing
Floor-standing gas water heaters have a large volume - from 100 to 300 liters, so they differ in rather big dimensions. This must be taken into account when buying, since finding a place to install such a large device can be quite difficult. Since this type of boiler has a large capacity, they are usually purchased by owners of private houses in which there is no hot water supply all year round.
wall
Wall storage water heaters are more compact. Usually they are placed directly above plumbing fixtures. This is very convenient, as it allows you to more rationally use the space. Devices of this kind are designed for a small amount of water, so most often they are bought for installation in city apartments - as a temporary solution to the problem of lack of hot water during seasonal shutdowns.
Popular volumes
Volume of the tank - the most important factor when choosing a storage gas water heater. Many significant and not very nuances depend on this parameter, ranging from the time of water heating to the dimensions of the device. Manufacturers produce boilers with a capacity of several tens to several hundred liters.
When choosing the right volume of a water tank, you need to take into account the number of households and the daily water consumption for each of them. For example, for families with small children, it is more expedient to buy more spacious models, and for single people or couples who are rarely at home, very small water heaters with a volume of 10 to 50 liters are suitable.
150 liters
When it comes to purchasing a storage water heater for country house, in which the family lives permanently, you need to consider appliances with a tank volume of at least 150 liters. It is this amount of hot water in the tank that is necessary so that a family of several people does not have problems with hygiene procedures.
200 liters
It is estimated that bathing requires 150 to 200 liters of water, showering 50 to 90 liters, and washing dishes requires 20 to 30 liters of water per day. Add to this 10-15 liters, which are spent on washing and washing hands, then multiply the resulting number by the number of households. The result of the calculations may surprise you unpleasantly. That is why water heaters with a large tank volume (from 200 liters) are considered optimal solution for a family, especially if she lives in a private house without hot water.
Connection diagram and installation
Installation of the storage water heater should be carried out in strict accordance with the installation instructions, which you will definitely find in the user manual.
- The boiler should be installed against the wall; at the same time, make sure that the pipes for hot and cold water are strictly parallel to it. There should be a small distance between the water heater and the wall, allowing for routine inspection and Maintenance nodal connections.
- It is recommended to use a ¾ inch pipe for connection to the water supply. Stand facing the appliance: the hot water pipe must be left hand, and for cold - on the right hand.
- Using a safety valve for a storage water heater will help to avoid overheating of the device and the associated unpleasant consequences.
- Before you start connecting the boiler to the water pipes, open the cold water tap. Make sure it is fairly clean, free of sand, rust particles, and other small debris. If necessary, insert a special water filter into the pipe (in the network section up to the water heater).
- Also, before starting installation, it is recommended to check the pressure in water pipes. Its level should not be higher than 8 bar. If this value is exceeded, a pressure reducer must be installed.
- Drops of water falling from the hydraulic valve are a sign of the normal operation of the device and the water supply network. But it is necessary to ensure that water from the valve does not fall on the body of the water heater. To do this, you need to attach a special drain funnel to the valve with an outlet to the sewer.
- If the boiler is installed in country house, in which there is no constant heating, you need to make sure that no water remains in the tank when the temperature outside drops below zero. Therefore, when leaving the house in the cold season, always drain the remaining liquid from the tank, otherwise the device may fail.
Ventilation
Accumulative gas water heaters that take air from the room in which they are installed should be placed only in rooms that meet several important requirements:
- air intake is carried out from the street or from an adjacent room;
- the room has a ventilation hole with an area of at least 1 m 2 (the area of \u200b\u200bthe hole is calculated depending on the power of the device - 6 cm 2 for each kW);
- the ventilation hole must be covered with a grate that does not impede the movement of air, and the hole must not be cluttered with anything.
It is impossible to give unequivocal advice about which water heater is better: gas or electric, instantaneous or storage. Each of the varieties has its own advantages and disadvantages.
So, gas boilers are more economical, but they are considered less safe than electric ones. Storage water heaters provide uniform heating of water, but flow-through models heat up faster and in large volumes. Therefore, each buyer must decide for himself which of the characteristics of water heaters is more important for him. In addition, the technical possibilities of connection should also be taken into account, such as the presence of a gas or water pipeline with normal pressure in the system.
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What are the benefits of gas storage water heaters?
Such equipment provides for the presence of a container for the accumulation of the finished product. Such structures are easily installed indoors. Thanks to their significant stock, you can not worry that comfort will end quickly. The product is enough for several points working at the same time. In addition, it does not depend on the power supply.They are characterized by low gas consumption. The amount of storage capacity depends on the needs of the family. It should be remembered that the faster water is selected from the tank, the more often the device turns on for heating. So if you decide gas storage water heater buy, then the volume of the tank should be 25-30% higher than the estimated quantitative volume of hot water.
Such equipment can be installed even in the country, as there are models that can run on liquefied gas.
Classification of gas boilers
Type of combustion chamber storage gas water heaters, available for sale in the SKO online store, are divided into two types:closed chamber (requires forced draft equipment);
open chamber (has natural draft).
They can be part of the heating system, but they can also work independently. Among all the options, it is very popular. It is fully adapted to the conditions of Russia. Polyurethane foam insulation keeps the temperature of the liquid well and saves energy. They are made of floor and wall type, have piezo ignition. Can be connected in parallel or in series.
It is no less quality. It can be used in industry and at home. The steel enameled tank is reliably protected from corrosion. Wall or floor installation allows installation in any room. The manufacturer provides for reconfiguration to work on liquefied gas.
You should pay attention to. Capacitive representatives of this company can be combined with gas boilers. There are models with a built-in gas injection burner with heat dissipating ceramic rods. They will work both in the heating system and autonomously.
A gas boiler is a device for heating water by burning gas. Such or in houses where there is no central supply of hot water. All boilers are divided into two large types - storage and flow.
Gas storage boiler
Storage water heaters consist of a gas combustion system (gas burner) and a tank in which water is located. The tank has thermal insulation, because high-quality heat preservation allows you to save up to 50% of fuel.
The tank turned off from the gas keeps the water temperature up to 7 days, and all thanks to the multi-layer heat-insulating pad.
The accumulative gas boiler for heating water is subdivided according to the volume of water in the tank. For example, for a kitchen and a shower (provided that no more than two people live), 50-80 liters are enough.
If the family consists of 3-4 people, there is a child, a bath is often taken, then the volume of the accumulative cannot be less than 100 liters.
During technical work, as well as in production, an Ariston gas boiler of 200 liters or even more is used.
The advantage of storage boilers is that they work well with a weak gas flow, and also retain a large amount of hot water for a long time. Well, the disadvantage of such water heaters is that they have a large volume of construction, such a boiler spoils the whole look of the bathroom. That is why it is often installed in attics or basements.
Another disadvantage of such a boiler is the limit of hot water. If you took a bath and used up all the water, then you will need to wait at least an hour for the other person to bathe.
The storage gas boiler has a power regulator that sets the temperature to which the water is heated. It also shows how much was used during use and how much hot water is left. If you start to take a shower or wash the dishes, do it for more than a few minutes, the boiler automatically turns on and starts to heat the newly arrived cold water. If you no longer bathe, it continues to work until the water is heated according to the set indicators, then automatically turns off and stores ready-made hot water for you.
Direct fired gas boiler
, which is also called a geyser, is, in essence, a heat exchanger. Water is not heated in advance, it is heated at the moment when it goes through the pipe. The geyser starts to work from an increase in water pressure when the tap is opened directly.
This design is very compact and convenient, it can be placed under the sink or behind the bath. The disadvantage of direct heating boilers is that a good gas pressure of at least 12 mbar is required for their sufficient functioning.
Just like a storage boiler, the geyser has a power thermostat, thanks to which you can set the outlet water temperature. In different models, power adjustment can be either manual (using the handle) or automatic (the size of the flame varies depending on the strength of the water flow).
At the time of buying instantaneous water heater pay attention to its useful power - the one that accounts for heating water. A boiler with a capacity of 12 kW per minute is capable of delivering up to 10 liters of water at a temperature of 50 degrees.
Ariston gas boiler safety
Like any gas equipment, a gas water heater must have safety sensors. When installing a gas boiler, there must certainly be a chimney to remove the products of combustion of gas.
On modern devices there are special valves and fuses that instantly turn off the gas supply if any violations occur - the water stops flowing, carbon monoxide got into the room instead of the chimney, or if the flame went out for some reason.
An overview of gas boilers shows that modern water heaters protect us from possible danger, but it is worth remembering that installing gas equipment is a matter of great responsibility and only professionals should be trusted.
Video review of the gas boiler Ariston FAST EVO
Which gas boiler to choose?
To answer this question, you must first determine the type and type of water heater. You already know about storage and flow, and you can choose what suits your needs and capabilities.
A gas boiler has a number of advantages over an electric one, namely, its low cost. However, mains-operated water heaters are safer and do not need a chimney.
When you decide which gas boiler to choose, pay attention to the manufacturer. Currently, the following brands of boilers are on the market:
- Ariston is one of the leaders in the production of boilers. Reliable, durable water heaters.
- Electrolux are also some of the best. The only negative is that you need to do service every 2 years.
- Termex - good models, a budget option.
- Gorenje - similar to the previous brand.
- Edisson - good water heaters, judging by the reviews on the network, they are very durable
- BAXI - inexpensive, but very worthy boilers, original design.
Installation of a gas boiler
As already mentioned, installing a gas boiler on your own is very dangerous. However, when installing a water heater by professionals, you should pay attention to some details. Before the boiler is installed, you need to obtain permission to install gas equipment in GorGaz or RayGaz. This will be easy to do if you put a gas water heater in place of the old one, in its original place.
If the geyser is not provided, then you have a lot more trouble. I would also like to note that the purchased boiler must meet all standards and have quality certificates. And then the gas water heater will serve you for a long time, providing you with comfort and safety.
Video: how to choose the right flow gas heater
