How to choose an inverter for a heating boiler: selection criteria + review of reliable models

What can replace

Today there are many options for heating homes and obtaining warm water, even without the use of a boiler. In particular, these are devices that allow you to effectively and efficiently heat a house. Basically, they work on the energy generated when the fuel burns, turning into heat. Thanks to this, the room is qualitatively filled with heat.

Most often the boiler is replaced:

• steam system powered by mains heating;
• gas or electric system of autonomous type;
• stove heating, for which any fuel is used;
• fireplace;
• autonomous heating system powered by sun or wind;
• air conditioner.

You can choose the heating yourself and combine it, starting with radiators and pipes, ending with a fireplace and a portable heater.

Consider each presented type of heating system used to replace the boiler.

1. Stove or fireplace. Both devices heat the room and water by burning wood or coal. To organize such a heating system, you will have to make a stove or buy ready-made communications and install it correctly. As a result, you can get economical and environmentally friendly equipment for heating, cooking and heating water. In this case, the stove can be made of brick or metal and immediately heat adjacent rooms.
2. Air conditioner. Not many people realize that the air conditioner heats the air well in the cold season. At the same time, its installation will require a minimum amount of time, unlike the boiler. However, the minus of such equipment is the high cost of maintenance, as well as the heating of a small number of square meters of the room.
3. Autonomous heating system with pipe and radiator systems connected to it. It can be obtained from the sun using devices called solar collectors. They are able to convert solar energy into heat for the home. It can also be obtained from the strength of the wind using a wind apparatus, consisting of a turntable with a generator and a battery device, or a wind station.

Important! These devices are suitable for efficient heating of a residential area, which is located away from the gas line.You can get warm even without using the central heating system, pipes with boilers and radiators. This can be achieved by maximum insulation of housing, a change in the usual wardrobe for home and psychological warming

This can be achieved by maximum insulation of housing, a change in the usual wardrobe for the home and psychological heating.

You can get warm even without using the central heating system, pipes with boilers and radiators. This can be achieved by maximum insulation of housing, a change in the usual wardrobe for the home and psychological heating.

Maximum home insulation includes wall insulation, adding warm floors to rooms, massive curtains on window openings, etc. Even when the boiler is operating, such nuances retain heat better and allow you to use the system economically.

Changing your wardrobe for the home includes starting to wear knitted sweaters, using blankets while relaxing, using warming capes with heating pads and warm drinks.

Psychological heating includes changing the design of rooms, changing the overall color scheme of rooms to warm shades, adding knitted decor and wood accessories to the room, using aroma candles and photos of warm places. So, you can deceive yourself and make the body psychologically receive heat.

In any case, you can find an option and a way to heat your home without a boiler. Such heating can warm even at sub-zero temperatures outside the window. Using the presented methods, you can heat your home even in the most difficult situation.

Types of modern UPS

Automation and control units of gas equipment require high-quality electricity, so the choice of an emergency power supply must be approached very responsibly.The uninterruptible switch for a gas boiler incorporates a battery and an emergency power switching system.

In the event of a power failure or a large change in the main voltage parameters, an instantaneous transition to battery power is carried out. Power supply units that ensure the operation of equipment from a battery may have a different design and principle of operation.

Typically, the following power supplies are used for heating systems:

• Backup sources (Off-line);
• Line-interactive (Line-Interactive);
• Double conversion UPS (On-line).

Redundant UPS (Off-line)

Backup power supplies are a large group of low-cost devices that provide only a transition to a battery without equalizing the mains voltage parameters. They consist of a rectifier, a converter, a battery and a switching device. In fail-safe mode, the electronic control unit of the heating equipment and the pump are powered directly from the mains. When the main power fails, the switch connects the backup power through the inverter-converter.

The UPS of this design is characterized by low operational parameters:

• No mains voltage stabilization;
• Long switching time;
• The voltage shape corresponds to the network.

This group of devices is characterized by low cost, but the least reliable.

Line Interactive

A line-interactive uninterruptible power supply for a heating boiler differs from a backup UPS in the presence of a built-in stabilizer.If in the Off-line power system the transition to the battery is carried out even with small voltage surges at the input, then the interactive source can operate with sufficiently large voltage fluctuations due to the stabilizer, so its reliability is higher.

Main parameters:

• The mains voltage is equalized by the stabilizer;
• Long transition time to reserve;
• Long period of work;
• The output waveform can be stepped.

Double Conversion Power Supplies (On-line)

The emergency power supply with a double conversion system (On-line) has fundamental design differences from the two previous devices.

This instrument converts alternating current to direct current and secondary conversion of direct current to alternating current. In this case, the reduced DC voltage charges the battery, which is connected to the input of the second inverter. In the event of a power failure, no time is required to connect the battery, since it is constantly on the line (On-line).

The characteristics of this device are much higher than those of a standby and line-interactive UPS.

Main characteristics:

• Almost perfect sine wave output;
• Instant activation of the reserve;
• Voltage and frequency stabilization;
• High price.

The double conversion UPS is the only device that outputs a pure sine wave instead of an approximate (stepped) waveform and maintains a stable frequency

For some electronic devices (e.g. gas boiler) this can be very important

Model examples

There are plenty of brands of boilers. And often users wonder about the selection of a generator for a boiler of a particular brand.

The following are examples of certain models of boilers and the most suitable modifications of gasoline generators.

First: Boiler - Baksi Ecofor 24.

Suitable Generators:

1. Hitachi E50. The price tag is 44 thousand rubles. Power - 4.2 kW.
2. Huter DY2500L. Cost - 18 thousand rubles. Power - 2 kW.

Second: Cauldron - Vailant 240/3.

He needs a high-quality stabilizer, such as Resanta ASN-1500, especially if the electricity is turned off every 4-5 hours.

Suitable alternator is Hyundai HHY 3000FE. It has an integrated AVR, modest fuel consumption and a power of 2.8 kW. It starts with a key and cable. Price tag - 42,000 rubles.

Third: Bosch Gaz 6000w. It does not depend on the phase and is supplemented with a stabilizer Stihl 500I for high-quality work.

For complete stability and safety, a SWATT PG7500 generator with a power of 6 - 6.5 kW is attached to it. Cost - 40200 rubles. It can work without interruption for 8 hours. Equipped with ARN.

Fourth: wall model Buderus Logamax U072-24K. This is a powerful double-circuit modification with automatic electric ignition.

An inverter generator is required. For example, Enersol SG 3 with a power of 7-8 kW. It costs about 60,600 rubles.

Fifth: boiler Proterm 30 KLOM. This is a phase dependent floor model.

It is usually used together with the stabilizer type "Calm" R 250T. A suitable generator option is Elitech BES 5000 E. It costs about 58,300 rubles. Power - 4-5 kW.

The sixth is the Navien Ice Turbo device - 10-30 kW.

With it, it is optimal to use the ABP 4.2-230 Vx-BG generator with a power of 4 kW and an average price tag of 55 thousand rubles.

If reliable fuel supply is required in field conditions or in the country, when there is no electricity, then it is optimal to use a generator that produces a pure sine wave, Huter HT 950A.

This is a convenient compact petrol model with low fuel consumption. It is able to work continuously for 6-8 hours if it is fully charged.

The engine here has one cylinder and two strokes. This is a guarantee of smooth and stable operation of the entire generator.

Other advantages:

1. The tank cap is located so that it is convenient to control the fuel level and refuel.
2. Overload protection available.
3. Low noise levels.
4. Special indicators allow you to monitor the oil level and control dangerous situations.
5. Replaceable air filter and muffler.
6. The engine is reliably protected from external influences by a shock-resistant housing.
7. There is an exhaust pipe that removes gases. Therefore, the device is only used outdoors or indoors with powerful ventilation.
8. To use the device does not require special skills and knowledge.
9. Modest price - 6100 rubles.

Classification

The main classification criteria for these devices are power, current shape and input voltage. The choice of a specific model depends on the purposes for which the device is purchased.

To connect to the car cigarette lighter, the simplest compact converters of low power are used. Gadgets with low power consumption (phones, laptops, fans, flashlights) can be powered from them.

The power of the inverter connected to the cigarette lighter must not exceed 150 watts. Otherwise, you can damage the entire electrical wiring of the car.

Converters for powering devices with a power of 150 W or more are connected directly to the battery terminals.To reduce efficiency losses, it is not recommended to use the "crocodiles" that are included with some models. For a stable and reliable connection, screw-type copper terminals are more suitable.

Rated and peak power

When choosing a converter, you should sum up the power of all consumers that will be connected to it. Another 20% is added to the result, since the device will not be able to work at its maximum for a long time. In addition, losses are possible due to poor contact in the connections or poor quality of the cable. You also need to consider the capacity of the battery.

It is necessary to calculate the power of the inverter according to two characteristics: nominal and peak. The first of them determines the load under which the device can operate for a long time. For household models, it usually ranges from 60 to 1000 watts. However, there are modifications in which this figure exceeds 1 kW. With their help, you can equip a mobile mini-power plant. It is advisable to buy them, for example, to connect power tools.

Peak power characterizes the maximum load that the inverter can withstand in a short period of time. It varies between 150 - 10000 watts. The current consumed by some electrical appliances at the start of operation is several times higher than the rated value

When choosing a converter, you must definitely pay attention to this point, otherwise the equipment connected to it may not start

Expert opinion
Kuznetsov Vasily Stepanovich

If the device is used with the car engine running, its load current should not be higher than the current generated by the generator.

For household needs (for example, traveling by car), an inverter with a power of up to 600 W is usually sufficient. This is enough to turn on the refrigerator, charge your phone, laptop or flashlight. The load current of such a device is approximately 50 A, which is much less than modern automotive generators.

Current waveform

An important criterion for choosing a converter is the shape of the current obtained at the output. This parameter determines which devices can be connected to it.

There are two types of form:

1. Pure (continuous) sine wave. The current diagram is a flat sinusoid. Such devices provide a safe connection of any equipment. The circuit of these devices includes expensive components, so the price for them is quite high.
2. Modified (modified) sinusoid. The current diagram is stepped. Such inverters must not be used to connect power tools with asynchronous motors, compressors and devices that are susceptible to interference. The equipment will either not start at all, or will operate in extreme mode, which leads to a decrease in efficiency and a reduction in service life. Modified sine wave converters are suitable for powering lamps, heaters, collector motors, phones, laptops, TVs. You can improve the quality of work by additionally installing a soft starter.

The cost of pure sine inverters is quite high. It is advisable to purchase them only if it is necessary to connect equipment that is incompatible with the modified sine wave.

Advantages and disadvantages of induction heating boilers

Creating an induction heating system reduces the cost of electricity consumption.Boilers with induction have many positive aspects, thanks to which they are increasingly being installed in houses without gasification. True, such units are not cheap.

Pros of using electric induction boilers

Like all new technology, this equipment has many advantages:

• With the help of automation, the desired temperature mode of the liquid in the heating system is set. Temperature sensors and relays support the set figures, this makes induction heating boilers autonomous and safe.
• Induction boilers can heat any liquid - water, ethylene glycol, oil and others.
• The efficiency of all electric boilers with induction exceeds 90%.
• The simple design makes these devices very reliable. They can last up to 30 years if properly maintained.
• Due to their small size, it is not necessary to make a separate room, the units can be easily installed in any part of the building and independently introduced into the heating system.
• Due to the constant vibration of the core and the closed system, scale does not form on the heater.
• The induction boiler is economical. It turns on only if the coolant temperature has dropped. Automation brings it to the specified numbers and turns off the device. All this happens very quickly. Working "idle", it consumes little energy due to the low inertia of the system.

Negative and Weaknesses

There are also disadvantages:

• High prices for these relatively new devices. The lion's share of the cost is built into automation, but the better it works, the more energy is saved.
• The interruption of the power supply leads to the shutdown of the heating in the house. A solution to the problem is a diesel or gasoline generator.
• Some models make a lot of noise during operation. These are placed in technical storerooms.
• If a system break occurs and the water does not cool the core, it will melt the body and the boiler mount. If this happens, the shutdown is carried out automatically.

Choosing a UPS for the boiler

After reviewing the types of uninterruptible power supplies, it remains to find out what characteristics they must have in order to be used in tandem with heating boilers.

As you know, modern heat generators have a high-sensitivity power supply, one or more circulation pumps, gas automation, a turbine for removing combustion products, so they must be reliably protected from current surges.

main parameters

Here are a number of characteristics that distinguish inverters for heat exchangers from similar devices for other purposes:

• the ability to generate a current of the correct form (sinusoid of alternating current 220 Volts);
• long battery life (the presence of external batteries);
• compliance with the phase when supplying electricity to the one that is available in the central network.

Power

The inverter for gas equipment in its power must exceed that of the boiler and have an additional margin of 50%. Given that the boiler power supply consumes an average of up to 60 W, and the pump - up to 120 W, most household heat exchangers need 180 W of energy.

That is why it is recommended to purchase UPS, the power of which starts from 300 watts. If the boiler is equipped with two pumps, and it is necessary to provide uninterrupted power to several more electrical appliances, it would be reasonable to install inverters with a power of 600 watts or more.

Batteries

To work in a residential area (apartment, private house), sealed batteries must be purchased. They do not emit toxic gases during operation, so they will not harm humans and animals.

As for the capacity of such devices, for interaction with the UPS for heating boilers suitable batteries with medium (60 - 70 Ah) and high (10 Ah) performance. The latter without problems will ensure uninterrupted operation of the unit offline for at least 7-8 hours.

Stabilizer

In recent years, almost all uninterruptible power supplies are equipped with a built-in voltage regulator, so there is no need to install additional equipment. Both integrated and separate stabilizers operate in the range of 140 - 270 volts, and switching to battery power occurs when the current in the network goes beyond these limits.

The speed of changeover to various energy sources is an important parameter in the characteristics of inverters. An excellent indicator can be considered 0.01 - 0.05 sec.

Knowing all the subtleties in the characteristics and features of the operation of uninterruptible power supplies, you can always make the right choice and ensure the operation of the heating system in your home with reliable, continuous operation.

What should be guided

When asked how to choose a heating boiler, they often answer that the main criterion is the availability of a particular fuel. In this context, we distinguish several types of boilers.

gas boilers

Gas boilers are the most common types of heating equipment. This is due to the fact that fuel for such boilers is not very expensive, it is available to a wide range of consumers.What are gas heating boilers? They differ from each other depending on what type of burner - atmospheric or inflatable. In the first case, the exhaust gas goes through the chimney, and in the second, all combustion products leave through a special pipe with the help of a fan. Of course, the second version will be a little more expensive, but it will not require smoke removal.

Wall mounted gas boiler

As for the method of placing the boilers, the choice of a heating boiler assumes the presence of floor and wall models. Which heating boiler is better in this case - there is no answer. After all, everything will depend on what goals you are pursuing. If, in addition to heating, you need to conduct hot water, then you can install modern wall-mounted heating boilers. So you will not need to install a boiler for heating water, and this is a financial savings. Also, in the case of wall-mounted models, combustion products can be removed directly to the street. And the small size of such devices will allow them to fit perfectly into the interior.

The disadvantage of wall models is their dependence on electrical energy.

Electric boilers

Next, consider electric heating boilers. If there is no mains gas in your area, an electric boiler can save you. Such types of heating boilers are small in size, so they can be used in small houses, as well as in cottages from 100 sq.m. All combustion products will be harmless from an environmental point of view. And the installation of such a boiler does not require special skills. It is worth noting that electric boilers are not very common. After all, fuel is expensive, and prices for it are rising and rising.If you are asking which heating boilers are better in terms of economy, then this is not an option in this case. Very often, electric boilers serve as spare appliances for heating.

Solid fuel boilers

Now it's time to consider what solid fuel heating boilers are. Such boilers are considered the most ancient, such a system has been used for space heating for a long time. And the reason for this is simple - fuel for such devices is available, it can be firewood, coke, peat, coal, etc. The only drawback is that such boilers are not able to work offline.

Gas generating solid fuel boiler

Modification of such boilers are gas generating devices. Such a boiler differs in that it is possible to control the combustion process, and the performance is regulated within 30-100 percent. When you think about how to choose a heating boiler, you should know that the fuel used by such boilers is firewood, their humidity should not be less than 30%. Gas-fired boilers depend on the supply of electrical energy. But they also have advantages in comparison with solid propellant ones. They have a high efficiency, which is twice as high as solid fuel appliances. And from the point of view of environmental pollution, they are environmentally friendly, since the combustion products will not enter the chimney, but will serve to form gas.

The rating of heating boilers shows that single-circuit gas-generating boilers cannot be used to heat water. And if we consider automation, then it is great. You can often find programmers on such devices - they regulate the temperature of the heat carrier and give signals if there is an emergency danger.

Gas-fired boilers in a private house are an expensive pleasure. After all, the cost of a heating boiler is high.

Oil boilers

Now let's look at liquid fuel boilers. As a working resource, such devices use diesel fuel. For the operation of such boilers, additional components will be needed - fuel tanks and a room specifically for the boiler. If you are thinking about which boiler to choose for heating, then we note that liquid fuel boilers have a very expensive burner, which can sometimes cost as much as a gas boiler with an atmospheric burner. But such a device has different power levels, which is why it is profitable to use it from an economic point of view.

In addition to diesel fuel, liquid fuel boilers can also use gas. For this, replaceable burners or special burners are used, which are capable of operating on two types of fuel.

Oil boiler

What type of gas boiler to choose for a cottage

• The principle of operation - modern gas boilers for a cottage, use condensing heating of the coolant. The efficiency of condensing equipment reaches 108%. The optimal use of boilers of this type is low-temperature heating systems (warm floors).
• Type of combustion chamber - atmospheric boilers, have a classic design. Air is supplied from the room in which the boiler equipment is installed. Equipment with a closed combustion chamber has a higher efficiency. Air intake and exhaust of combustion products is carried out by means of a coaxial pipe.
• Energy dependence - the operation of gas boilers of the classical type does not depend on the availability of electricity.Turbocharged and condensing models of heating devices with a closed combustion chamber, as well as equipment using a microprocessor controller, depend on the availability of electricity in the network.

How many circuits should be

• Single-circuit models - in the internal device there is one heat exchanger designed to heat the coolant of the heating system. Boilers have great performance. To heat DHW water, you need to connect an external storage boiler. Installing a single-circuit gas boiler in a cottage is justified only in the case of a large heated area of ​​\u200b\u200bthe premises, when there is no need to heat hot water or it is planned to additionally install a storage tank.

• Double-circuit models - boilers are equipped with two heat exchangers:
  1. The primary circuit is made of steel and works to heat the coolant in the heating system.
  2. The secondary heat exchanger is a copper coil (an alloy of several metals can also be used in production). Heating of hot water is carried out in a flowing way.

  Double-circuit gas boilers for cottages have less power compared to single-circuit counterparts, but are quite convenient to operate.

• Boilers with built-in storage boiler. The main disadvantage of double-circuit equipment is that heated water is supplied to the consumer not immediately after the tap is opened, but after a few minutes. This problem is easily solved, thanks to the container provided inside the body, similar to a boiler in its design. The required temperature of heating the liquid is automatically maintained in the storage tank. The tank is connected to the recirculation system.Hot water is supplied to the consumer immediately after opening the tap.

What type of accommodation is best

Stationary boiler - floor installation has one significant advantage - there are almost no restrictions on the weight of the structure. This feature allows the production to install all the necessary equipment of good quality.

As a rule, floor models have a longer service life than wall versions.

Wall-mounted boiler - has a modest size, does not take up much space after installation, which is especially important if a small boiler room is used. During installation, the load on the load-bearing wall increases significantly, therefore, the manufacturer seeks to facilitate the design. For this, lightweight metal alloys are used in the production, which affects the service life.

For this, lightweight metal alloys are used in the production, which affects the service life.

Choosing a UPS for the boiler

After reviewing the types of uninterruptible power supplies, it remains to find out what characteristics they must have in order to be used in tandem with heating boilers.

As you know, modern heat generators have a high-sensitivity power supply, one or more circulation pumps, gas automation, a turbine for removing combustion products, so they must be reliably protected from current surges.

main parameters

Here are a number of characteristics that distinguish inverters for heat exchangers from similar devices for other purposes:

• the ability to generate a current of the correct form (sinusoid of alternating current 220 Volts);
• long battery life (the presence of external batteries);
• compliance with the phase when supplying electricity to the one that is available in the central network.

Power

The inverter for gas equipment in its power must exceed that of the boiler and have an additional margin of 50%. Given that the boiler power supply consumes an average of up to 60 W, and the pump - up to 120 W, most household heat exchangers need 180 W of energy.

That is why it is recommended to purchase UPS, the power of which starts from 300 watts. If the boiler is equipped with two pumps, and it is necessary to provide uninterrupted power to several more electrical appliances, it would be reasonable to install inverters with a power of 600 watts or more.

Batteries

To work in a residential area (apartment, private house), sealed batteries must be purchased. They do not emit toxic gases during operation, so they will not harm humans and animals.

As for the capacity of such devices, batteries with medium (60 - 70 Ah) and high (10 Ah) performance are suitable for interacting with a UPS for heating boilers. The latter without problems will ensure uninterrupted operation of the unit offline for at least 7-8 hours.

Stabilizer

In recent years, almost all uninterruptible power supplies are equipped with a built-in voltage regulator, so there is no need to install additional equipment. Both integrated and separate stabilizers operate in the range of 140 - 270 volts, and switching to battery power occurs when the current in the network goes beyond these limits.

The speed of changeover to various energy sources is an important parameter in the characteristics of inverters.An excellent indicator can be considered 0.01 - 0.05 sec.

Knowing all the subtleties in the characteristics and features of the operation of uninterruptible power supplies, you can always make the right choice and ensure the operation of the heating system in your home with reliable, continuous operation.

Popular UPS models for gas boilers

In this section, we will look at the most popular UPS models for gas boilers. Our micro-reviews will help you make the right choice.

Teplocom 300

Before us is the simplest UPS for gas and any other heating boilers. It has an extremely simplified design and is devoid of any adjustments. The UPS produces a pure sine wave at the output, making it ideal for gas boilers and any other electrical equipment. Connection to the network is carried out with a Euro plug, a socket is provided for connecting consumers on board. The battery is connected via a screw terminal block.

Advantages and characteristics of the model:

• Output power - 200 W;
• Efficiency - more than 82%;
• Charge current - 1.35 A;
• Built-in deep discharge protection;
• Battery capacity - from 26 to 100 A / h.

If you do not need fine adjustments and other functions, pay attention to this UPS for gas boilers - at a cost of 10-11 thousand rubles, it will be an excellent solution for powering boiler equipment with a maximum power consumption of up to 200 W.

SVC W-600L

The presented UPS for gas boilers has excellent technical characteristics. It contains protection against high-frequency interference and other interference, complete galvanic isolation from the network, overload protection. The device can be used to protect computer networks and telephone lines.There is no built-in battery on board, it is purchased and connected separately. The efficiency of the device is 95%, this is a very high figure.

The switching time to battery power for this UPS is from 3 to 6 ms, a gas boiler will not notice anything in such an insignificant period of time. The time for a full charge of the battery is 6-8 hours, the charge current is 6 A. Two standard sockets are provided for connecting consumers. The control of network parameters and output voltage is provided by means of an informative LCD panel. The optimal capacity of the connected battery is 45-60 A / h, but more is possible.

This UPS is suitable not only for powering gas boilers, but also for any other electronic devices that are sensitive to the quality of the supply voltage. The cost of the model is about 7000 rubles. - A great uninterruptible power supply for home use.

Helior Sigma 1 KSL-36V

Before us is the ultimate accurate UPS, which can be used not only with gas boilers, but also with other appliances. It provides mains power with impressive fluctuations. input voltage - from 138 to 300 V. That is, this is a typical UPS stabilizer. The output voltage is 220, 230 or 240V (user selectable) with an accuracy of only 1%. It is also possible to work in bypass mode. Other features and characteristics:

• Switching to batteries without power interruption;
• Overload protection;
• Charge current - 6A;
• Output power - up to 600 W;
• Input voltage at the battery terminals - 36 V (three batteries are needed);
• High fault tolerance;
• High efficiency;
• Self-diagnosis;
• PC control;
• Russian-language interface;
• Ability to work with generators;
• The output voltage waveform is a pure uninterrupted sine wave.

UPS for gas boiler Helior Sigma 1 KSL-36V can be called the ideal solution. It is compact, functional and has excellent technical characteristics. True, you will have to pay for all this in rubles - the cost of the unit on the market varies between 17-19 thousand rubles.

Among the considered UPS for gas boilers, we recommend paying attention to the latest model - it is the most functional and gives a stable 220 V output with a pure sine wave.