Understanding the question of how to choose instantaneous gas water heaters, you need to understand how the device itself works and what are its advantages. The article will discuss these issues and provide a list of the most popular brands of such devices.
Content
What is a gas water heater?
A flowing gas water heater, which is popularly called a gas water heater, is one of the most economical and convenient ways to provide a house or apartment with hot water. This is achieved thanks to the thoughtful and modern device design - it does not have a volumetric tank with water, the burning gas heats the liquid through a plate heat exchanger, which transfers heat to a metal tube with flowing water. Combustion products are removed by natural draft through a chimney or forcedly by a fan.
When water is turned on in the column, the machine is triggered - the burners light up and heat up the entire chain. A few seconds after turning the tap, hot water will flow in the mixer. At the moment, many additional functions are installed on such devices that make it safer and more comfortable to use.
When deciding to install such a device, it is worth considering that the gas itself, through which it works, is explosive, which means that if the safety precautions are incorrect, you can be at risk. On modern water heaters of this type there are special protections that will not allow such an outcome, but the “health” of the column must be regularly monitored.
It should also be taken into account that the room in which the device will be installed must be well ventilated so that carbon monoxide, the product of combustion of the raw materials for the column, is eroded in time and no one is poisoned.
Types of geysers
There are such types of water heaters:
- Ignition. Columns are divided into two types according to the ignition method. An automatic option is considered more convenient, in which the gas ignites immediately after turning the tap handle. In this case, the device does not need to be touched at all and you can safely use hot water. Another type is piercing, which means manually turning on the gas with the button. This is convenient only when the device is within walking distance to use it on time.
- Power. Here gas flowing water heaters are divided into three general types: low power (from 17 to 19 kilowatts), medium (from 22 to 24 kilowatts) and powerful (from 28 to 31 kilowatts). To understand which column will be enough, you need to calculate the number of hot water outlets - if the device is connected to 1 mixer, a low-power device will be enough, and if the heated liquid is supplied to several taps, a shower, a bathroom and so on, it is worth taking more powerful options.
- Modulation. Take into account this parameter is for those who constantly have differences in water pressure. A column with constant power will give one temperature to the heat exchanger, which means that the increasing or decreasing stream will have different degrees. A device with modulation is able to adjust the heat transfer force depending on the pressure, and means to maintain the same liquid temperature at the outlet.
- Smoke exhaust Combustion products can be removed by force - when turned on, the fan starts to work, which pushes harmful accumulations. Also, the device can be designed for natural traction.
Varieties of columns for technical stuffing are selected according to the conditions in which the device will be installed.On the other hand, modern appliances may not disfigure the bathroom or kitchen - neat models of different colors are offered, with patterns and various original forms of the case.
Features and safety of instantaneous gas water heaters
If there is such an opportunity, it is better to choose a gas flow from all water heaters, since:
- it is capable of delivering an unlimited amount of hot water, unlike storage heaters;
- it is much more compact and can fit in a small area;
- the device is reliable, since the principle of the device itself does not have obvious weaknesses - only additional functions that can easily and inexpensively normalize can break;
- maintenance of a geyser is inexpensive - it is not difficult to disassemble and clean it;
- many sensors avoid gas leakage, combustion products or overheating;
- the fuel itself, that is, natural gas, is much cheaper than electricity, and does not create such a load on the wiring.
Many are concerned about the safety of such a device. Modern models are equipped with a strict protection system and are less dangerous than even boilers. These include:
- Traction control sensor. In case of overheating of the heat exchanger, the gas valve is automatically shut off.
- The control unit, where you can set all the necessary parameters, for example, temperature, to rationally use gas and prevent overloading the column.
- Flow sensor - monitors the temperature of the water and turns off the gas if it is higher than the set value.
- The flame power control electrode - the wick does not burn continuously, which means that the minimum amount of combustion products is formed.
- A safety valve is needed to control the flame in the burner. If, for various reasons, it goes out, it shuts off the gas flow so that there is no dangerous leak.
Modern gas water heaters, unlike those produced in the USSR, can be easily operated even by children. With regular cleaning and care with such a device there will be a minimum of problems, of course, if it is selected according to the conditions in each particular case.
What should I look for when choosing?
Below we will consider a detailed algorithm for selecting a column for certain technical parameters. However, before choosing, you need to deal with the premises and the requirements of its owner. It is worth paying attention to:
- whether there is a chimney in the room into which combustion products will "go";
- how much hot water is needed and how many points it will be distributed;
- how much the column should be manageable;
- the amount of space in the room or the ability to connect from another room;
- secondary, but often important - it is worth considering the design of the room.
In a good way, the choice of a geyser should be carried out by a specialist after studying traction, space and other parameters. If this is not possible, it is imperative to consult at least with sellers of such equipment, describing in detail their capabilities and desires.
We select a column step by step
When choosing a flow-type water heater, you must follow the following algorithm:
- Select the required degree of security. A column is considered normal if it has three methods of protection: the gas turns off when the burner extinguishes, if there is no draft, there is a flow valve that prevents overheating. However, it would be better if the device will also have other circuit breakers and mechanisms.
- Choose the level of controllability. There are columns on which the temperature is set with one knob, and there are those in which about 10 different parameters can be set on the plasma display. The latter will cost significantly more, but their comfort is much higher.
- Power. It is calculated in the difference between the temperature of the water entering the column and its output.Some unscrupulous sellers may not advertise this most important indicator, so you should ask this question clearly and be one of the first: “How much will the outlet temperature be if the water entering the column is about 3-5 degrees?”. On average, each point of water consumption requires 6-7 liters. Power must be calculated by correlating the temperature generated by the column with the amount of water consumed.
- Profitability. From this point of view, in Russian conditions it is better to buy a modulating gas column. It will allow, regardless of pressure, to bathe in warm water, and not in boiling water or ice, and will consume less gas. The winter / summer mode will also be useful. In the warmer months, fewer gas burners will work, which means less fuel consumption.
- In terms of aesthetics, you can purchase a column of many colors and shades, including matte and glossy. Also, patterns, ornaments, and other decorations are applied to the panel to help fit the device into the interior.
When deciding what a geyser should be, you should first turn to technical indicators and safety, rather than its beauty and elegance. Even the most beautiful device can be fragile and break in the middle of winter, leaving the owner alone with cold water and a repair bill.
Well-known manufacturers
Understanding how to choose gas instantaneous water heaters by quality, it is worth exploring the offer on the market. Here are the most popular manufacturers in the gas instantaneous water heater market:
- Ariston - from features: created from composite materials, there is a function of maintaining temperature. The Italian company, which is known for its quality and quite normal prices.
- Vaillant - from features: the best copper heat exchangers, anti-corrosion materials. Like any other German product, they will serve for a long time and do not require large expenses for repair and maintenance.
- Beretta - from features: high-quality parts and components that are pleasant to look at, can easily be placed in a monitored place. One of the most popular Italian companies in the world.
- Bosch is a German reliable company, descended from the well-known alliance Junkers.
- NEVA - Russian products, adapted to local conditions, that is, to differences in pressure and gas.
Local products, of course, will cost the buyer cheaper, but foreign products have more confident positive reviews. In any case, the gas column must be selected according to the technical parameters and only then by the manufacturer.
