UPS for gas heating boilers: how to choose, TOP-12 best models, maintenance tips

UPS requirements for gas boilers and their characteristics

When choosing a UPS for a boiler, you should familiarize yourself with their varieties. They are represented by two main types - these are offline and online UPS. Offline systems are the simplest uninterruptible power devices. They do not know how to stabilize the voltage, switching to batteries only when the voltage drops below a certain value - only in this case a stable 220 V appears at the output (the rest of the time, the UPS works as if in bypass mode).

Choose a UPS with a smooth sine wave, this will contribute to a more stable operation of your heating equipment.

The UPS for the online type boiler performs double conversion of electricity. First, 220 V AC is converted to 12 or 24 V DC. Then the direct current is again converted into alternating current - with a voltage of 220 V and a frequency of 50 Hz. In order to reduce losses, high-efficiency inverter converters are used in their design.

Thus, a UPS for a boiler is not always a stabilizer, while heating equipment likes a stable voltage. It also likes when the output is a pure sine wave, and not its rectangular counterpart (a square wave or a stepped approximation of a sine wave). By the way, cheap computer UPSs with a small capacity battery give a stepped sinusoid shape. Therefore, they are not suitable for powering gas boilers.

An uninterruptible power supply for the boiler, represented by a computer UPS, is also not suitable because the battery capacity is extremely small here - the reserve is enough for 10-30 minutes of operation.

Now we will look at battery requirements. When you come to the store to choose a good UPS for a gas boiler, do not forget to purchase a model with a plug-in type battery - it must be external, not built-in. The thing is that external batteries have a higher capacity, up to several hundred Ah. They have impressive dimensions, so they are not built into the equipment, but stand next to it.

Let's see how to choose a UPS for a gas boiler, focusing on the maximum battery life.Considering that accidents on the lines today are eliminated very quickly, and the maximum time for preventive maintenance is no more than one working day, then 6-8 hours of battery life is enough for us. In order to calculate how long an uninterruptible power supply for a gas boiler will work on a full charge, we need the following data:

• Battery capacity in ampere/hours;
• Battery voltage (can be 12 or 24 V);
• Load (indicated in the passport for the gas boiler).

Let's try to calculate how long the uninterruptible power supply for the boiler will work with a power consumption of 170 W from a battery with a capacity of 75 A / h and a voltage of 12 V. To do this, we multiply the voltage by the current and divide by the power - (75x12) / 170. It turns out that the gas boiler will be able to work from the selected UPS for more than 5 hours. And if we take into account the fact that the equipment operates in a cyclic mode (not constantly), then we can count on 6-7 hours of continuous power.

Table for selecting the battery capacity of an uninterrupted battery, depending on the power of the boiler.

When using low-power gas boilers and two batteries with a capacity of 100 A / h each and a voltage of 12 V, the battery life will be about 13-14 hours.

When planning to buy an uninterruptible power supply for a boiler, you need to pay attention to such a characteristic as charging current. The thing is that it should be 10-12% of the battery capacity

For example, if the battery has a capacity of 100 A / h, then the charge current should be 10%. If this indicator is less or more, then the battery will last less than it should.

Maintenance-free batteries can be charged at lower currents, but the time for a full charge will be quite long.

Summary table of characteristics of the best UPS with prices

In the following table, you can get acquainted with 9 popular and efficient UPSs on the market, which are divided into 3 subgroups. From the names, you can understand that the main factor is the necessary uptime.

We also took into account the heated area of ​​the house: the larger it is, the higher the power consumption of the boiler and pumps. Each subgroup includes models for houses up to 100 sq.m (power consumption of boilers and pumps - 100-150 and 30-50 W) and for 100-200 sq.m. (150-200 and 60-100 W).

9 best UPS for gas boilers Group 1: UPS for short (up to 2 hours) and rare (2-4 times a year) outages. Group 2: UPS for long (from 2 hours) and frequent (from 5 times a year) shutdownsUPS for joint operation with an electricity generator

1. UPS-12-300N	off-line power 300 W pure sine wave battery life up to 10 hours Ideal for: a boiler in a small house up to 100 sq.m with a stable mains voltage of 220 V	11000₽
2. Energy UPS Pro 500 12V	line-interactive power 300 W pure sine wave switching time no more than 6 ms Ideal for: boilers without external circulation pumps in a small house up to 100 sqm	10800₽
3. Energy Guarantor 1000	line-interactive power 600 W Efficiency 98% battery life up to 11 hours Ideal for: connection of boilers and pumps in houses 100-200 sq.m.	12900₽
4. Energy UPS Pro 1000 12V	line-interactive power 700 W high overload protection switching time no more than 6 ms Ideal for: sensitive boilers and pumps in 100-200 sqm houses with unstable voltage	16800₽
5. Energy PN-1000	line-interactive power 600 W floor pure sine wave Ideal for: boilers and pumps in houses 100-200 sq.m with stable voltage	12900₽
6. ELTENA (INELT) Intelligent 500LT2	line-interactive power 300 W switching in 4 ms battery life up to 12 hours Ideal for: Boilers with built-in pump in houses up to 100 sqm	10325₽
7. Helior Sigma 1 KSL-12V	online power 800 W input voltage 138-300 V battery life up to 24 hours Ideal for: uninterrupted power supply of boilers and pumps with unstable voltage	19350₽
8. P-Com Pro 1H	online power 800 W input voltage 115-295 V almost instant switching Ideal for: Boilers with extra low voltage and high noise requirements	17700₽
9. ELTENA (INELT) Monolith E1000LT-12V	online power 800 W input voltage 110-300 V battery life up to 15 hours Ideal for: Expensive boilers with sensitive electronics	21600₽

Application area

Initially, UPSs were created for computer equipment. The most powerful models with a built-in battery made it possible to provide power to the system for 15 minutes. This is quite enough for the correct completion of the work.

Nobody forbids using a device with an external source for the same purposes, but it will be quite wasteful.

Therefore, an uninterruptible power supply unit with an external battery is recommended for use to provide current:

1. Server stations for various purposes.
2. As an addition to the generator. At night, to save money, the generator can be turned off, but critical life support systems will work.
3. Ensuring the operation of household appliances (refrigerator, TV).

UPS selection

The electronic filling of gas heating boilers very poorly withstands negative external influences, so you should not save on an uninterruptible power supply.Choosing the best UPS for a particular situation is not an easy task, so it must be approached comprehensively, studying all possible characteristics.

There are a lot of uninterruptible power supply models on the market with a wide range of characteristics and prices. In order not to run into problems when choosing, you need to have an idea about the operating conditions of the device and the characteristics that are required of it.

First of all, you should pay attention to the following parameters:

• Boiler operation time when switching to UPS;
• Total and active power indicators;
• Type of sinusoid curve at the output of the uninterruptible power supply;
• Operating voltage range;
• The ability to increase the capacity of the device due to additional batteries.

The larger the capacity of the battery built into the UPS, the longer the duration of the device will be when the power goes out. To increase the reliability of an uninterruptible power supply, it is better to purchase an option that has the ability to connect backup batteries.

The documentation for the UPS has the values ​​\u200b\u200bof apparent and active power. The last value is a working indicator, which must be taken into account. For normal operation of the uninterruptible power supply, its active power must be twice the total load of all heating equipment - this will ensure its normal start.

The operating voltage range must always be studied, but it acquires special significance if an uninterruptible power supply is used in a country house. The voltage in the mains outside the city can drop to 160 watts, and the device must be ready for such drops. The best choice in this case would be a UPS with an integrated stabilizer.

The following can be said about the nature of the voltage sinusoid: an approximated sinusoid is less preferable, since in this case the battery for a gas boiler is very noisy and cannot work at full power. In addition, the gas boiler in this case will also function unstably. This problem is solved simply - it is enough to purchase a device with a smooth sinusoid curve.

Summarizing all the above, we can come to the following conclusions:

1. The best option for most situations would be a continuous type UPS, to which an external battery with a capacity of more than 50 Ah is connected - for example, the Calm UPS for a gas boiler is quite suitable. Such a device will allow the heating equipment to work offline for 3-5 hours, depending on the specific parameters of the uninterruptible unit and the boiler.
2. Next come line-interactive uninterruptible power supplies, which have a good operating voltage range, a smooth sine wave and the ability to increase capacity due to external batteries. Such devices usually have a built-in battery, designed for about 10-15 minutes of battery life, but this is not enough for a full-fledged offline mode. The cost of line-interactive models is not very high, and even with the purchase of additional batteries, this amount will increase slightly.
3. The last option, which is worth buying only with a very limited budget, is backup uninterruptible power supplies, which are characterized by low power, negligible capacitance and an approximate sine wave. With a sharp power surge in the network, such a device will not protect the boiler electronics in any way, so it may fail. The batteries of backup uninterruptibles work for no more than half an hour, after which the heating equipment is turned off.

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.

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.

How to choose a UPS for a gas boiler?

Power calculation

The power consumed by the gas boiler is the sum of the power consumption of the electronics unit, the power of the pump and the cooling fan (if any). In this case, only the thermal power in watts can be indicated in the passport of the unit.

UPS power for boilers is calculated by the formula: A=B/C*D, where:

• A is the power of the backup power supply;
• B is the nameplate power of the equipment in watts;
• C - coefficient 0.7 for reactive load;
• D - three times the margin for starting current.

UPS battery selection

For backup power devices, batteries of various capacities are provided. On some devices, as mentioned above, you can connect an external battery, which allows you to work longer in emergency mode. The larger the battery capacity, the longer the gas boiler will be able to work without electricity. Accordingly, with an increase in capacity, the price of the device also increases.

If an external battery can be connected to the UPS, it is important to know the maximum charge current indicated in the documentation. We multiply this figure by 10 - and we get the capacity of the battery that can be charged from this device

UPS runtime can be calculated using a simple formula. We multiply the capacity of the battery by its voltage, and divide the result by the full power of the load. For example, if the device uses a 12V battery with a capacity of 75 Ah, and the total power of all equipment is 200 W, then the battery life will be 4.5 hours: 75*12/200 = 4.5.

Batteries can be connected in series or in parallel. In the first case, the capacitance of the device does not change, but the voltage adds up. In the second case, the opposite is true.

If you decide to use car batteries with the UPS to save money, immediately abandon this idea. In the event of an incorrect connection, the uninterruptible power supply will fail, and under warranty (even if it is still valid), no one will change it for you.

It's no secret that batteries get hot during operation. Therefore, it is not necessary to heat them additionally against each other. When connecting several such devices, make sure that there is an air gap between them.Also, do not keep batteries near heat sources (like heaters) or at very low temperatures - this will lead to their rapid discharge.

Installation location

Uninterruptibles for gas boilers should be installed indoors next to the heating system. Like batteries, the UPS itself does not like extreme heat or cold, so you need to create optimal conditions (room temperature) in the room for it to work.

The device is best placed near outlets. If the device is small, you can not hang it on the wall, but simply put it on a shelf. At the same time, the ventilation openings must remain open.

Minimum distances from gas pipes to sockets, including up to the UPS, must be at least 0.5 meters.

Do I need a stabilizer if there is a UPS

An uninterruptible power supply is a useful and functional device, but it will not be a salvation from all troubles if the quality of the input voltage is poor in the house. Not all UPS models are able to "pull out" low voltage (less than 170-180 V).

If your home really has serious and persistent problems with the input voltage (it is less than 200 V), you still have to install a normal inverter regulator at the input. Otherwise, the gas boiler will be powered only by batteries, which will take away a significant part of their operating life.

Backup Power Supply Modifications

Uninterruptible power supplies can be classified according to different criteria: type of battery, installation method (floor or wall), purpose, safety, etc. The generally accepted division into types is carried out according to the principle of operation.UPSs are divided into three main classes:

• linear or off-line (Off-Line);
• linear-interactive (Line-Interactive);
• double conversion or on-line (On-Line).

Each modification of backup power sources has its advantages and disadvantages, which determine the operating conditions for each type of equipment.

Linear

Linear UPSs belong to the budget series of devices of this type. Their design does not include a stabilizer or autotransformer. They operate in a given voltage range from 170 to 270V. When power surges beyond the specified interval, the power is switched from the network to the battery.

Due to the lack of a stabilization unit, the output voltage has the same unstable sinusoid as the input voltage. This leads to malfunctions in the electrical equipment of the gas boiler. The power transfer time is 15ms in one direction or the other. When choosing off-line uninterruptible power supplies, it should be borne in mind that intense voltage drops in domestic electrical networks, especially in winter, have a negative effect on the device. This fact reduces the life of the UPS by several times.

Advice. Off-Line backup power sources are not designed to work in conjunction with generator sets running on diesel or gasoline fuel.

Line Interactive

The main difference between linear-interactive UPS and linear UPS is the presence of a voltage stabilizer or automatic voltage in the equipment design. These modules help to equalize the voltage sinusoid to optimal parameters. This ensures the operation of the gas boiler in normal mode and extends the service life.The extreme voltage limits at which the backup power supply operates in idle mode are 170 and 270 V. Switching power from the battery and back is carried out automatically.

From practical experience, experts note the incorrect operation of some models of the device with gasoline or diesel-type generators. The design of the unit provides for the connection of external batteries.

double conversion

Uninterruptible power supplies of the On-Line type, unlike the other two types, have a more complex circuit diagram of operation and connection. The design of the device provides an inverter for double conversion of electric current.

The principle of operation of the device is as follows. The input AC voltage 220 V from the electric line is inverted into a constant 12 V or 24 V, depending on the modification of the gas equipment. As a result, the sinusoidal signal is rectified to a stable value, which is a direct current.

At the second stage, the stabilized DC voltage is converted back to AC voltage 220 V with a stable frequency of 50 Hz by the inverter. Double conversion UPS operate in the range of 110 - 300 V. On-line operation of the device ensures stable operation of the gas boiler at low or high voltage, without switching power to the battery. This helps extend the life of the battery before it needs to be replaced.

According to the type of installation, devices are available in two types: wall and floor

Battery

When choosing a UPS, you should pay attention to the capacity of the battery. The operating time of the gas boiler from the backup power source depends on its parameters.

In the event of a power outage for a long time, the battery that the UPS is equipped with must ensure uninterrupted operation of the boiler for up to 10 hours. If it is possible to connect an external battery, make sure that the batteries are of the same capacity.

The best 24V UPS for two external batteries

Kit for medium and long battery life of medium power boilers

Models with the connection of two external batteries proved to be more stable for a long battery life under high loads. Serial connection at 24V allows you to halve the load current both on the batteries and on the source inverter, which has a positive effect on reliability under conditions of increased load and the presence of inrush currents.

1 place. Helior Sigma 1KSL 24V

The 24V model inherits all the positive and weak sides of the 12V model, but allows you to connect a 2-fold larger battery bank. As a result, Helior Sigma 1KSL is the best option for uninterrupted power supply of the boiler and pumps of an average cottage (200-350 sq.m.) with low or medium autonomy (up to 6-10 hours). The manufacturer's line includes a model with built-in Helior Sigma 1 KL batteries for autonomy up to 30 minutes - we recommend if you have a generator with automatic start.

2nd place. Stark Country 1000 online 16A (24V)

Reliable Stark and 2 batteries of 140Ah

The second line in our ranking of the best UPS occupies Stark Country Online 24V, which is produced at the largest Taiwanese enterprise Voltronic Power. Note that back in 2017, only 36V models were supplied to Russia. In 2018, the model was updated, which is now designed to connect two external batteries.

We highlight the following benefits:

• Minimum number of service cases
• High and customizable charge current up to 16 amps for connecting large capacity batteries
• Attractive front panel design
• Wide input voltage range from 110 to 300V.

Flaws:

• Limited display information
• Average noise level
• High price

Uninterruptible Stark Country 1000 online 16A is recommended for houses with a heated area of ​​200-400 sq.m. with the need for an average and long battery life (8-16 hours). So, for example, complete with two 200Ah batteries, it is able to autonomously feed a gas boiler with pumps in a cottage with an area of ​​350m for ~ 13 hours. Available for sale are single-phase models with a capacity of 2kVA, 3kVA, 6kVA and 10kVA - for uninterrupted power supply of an additional load or the whole house.

3rd place. Tieber (Zenon) T1000 24V 12A

The third place is occupied by two completely identical sources with a different design of the front panel produced by the international concern K-Star. UPSs serve in the homes of thousands of our customers throughout Russia. The positives include:

• Acceptable price
• High charging current, which allows you to connect high-capacity batteries for extended backup time
• Wide range of input voltages - from 110V to 290V.
• Good reliability under correct operating conditions
• A large number of parameters to display on the display

Flaws:

• You can connect batteries starting from 55 Amperes (high charge current)
• Average noise level

Consideration should be given to Zenon and Tieber if it is necessary to ensure a long battery life (more than 10 hours) with a low quality of the mains supply.At the end of 2016, the source received an update and is now available for order.

If the power of the boiler and all circulation pumps exceeds 600W, you should pay attention to sets with a power of 2000W (1600W) or even 3000W (2700W).