Uninterruptible power supplies for heating boilers of any type

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.

The minimum distance from gas pipes to sockets, including 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.

UPS selection

When choosing the appropriate option, you should focus on what the UPS is for, and take into account a number of additional parameters:

• characteristics of devices powered by the uninterruptible power supply system;
• desired power;
• quality of electrical networks;
• budget.

Of course, the On line block will be the ideal solution for any situation, but for non-critical tasks, backup or line-interactive ones are quite suitable.

UPS key features for selection:

• form and technology of output voltage generation (DC or AC UPS);
• declared and required power;
• type of;
• battery life.

Usually the latter is 5–7 minutes, which is quite enough for a regular shutdown. More advanced ones provide up to 20 minutes, and the most energy-intensive ones are able to power the load for up to half an hour. They are used, for example, in hospitals and other critical facilities.

You should also pay attention to additional interfaces, the possibility of software and remote monitoring and control, the ease of replacing batteries and the availability of connecting additional batteries to increase the autonomy period.

Tasks

You need to decide what you need an uninterruptible for. With frequent power outages at home or in the office, a simple backup is useful, which will help save work and shut down the PC correctly. But it should be borne in mind that there is no stabilizer in the sources of this variety, therefore, if possible, it is advisable to choose a model that is more expensive, with a high-quality element base.

With frequent power surges, it is desirable to take care of the presence of a stabilizer, and for this it is advisable to purchase a linear-interactive one. And if there are no financial restrictions, and consumers provided with uninterruptible power supply are powerful, then On Line UPS will be the best choice. It guarantees instant switching and no jumps.

The "golden mean" can be called line-interactive samples. They have a reasonable price-quality ratio and provide a good level of protection.

UPS manufacturers (APC, Powercom, IPPON, domestic STIHL and others) produce various versions - from simple and low-power ones at 450–600 VA to serious rack-mount and industrial units with tens of kilowatts

It is important to understand that conventional "civilian" models are not suitable for working in conjunction, for example, with gas boilers and high-power industrial equipment; there are special options for them.

Kinds

Manufacturers of heating equipment represent many different devices. This allows you to choose an option for any financial possibilities and technical requirements. Depending on the principle of operation of uninterruptible power supplies, there are backup, line-interactive, online. Let's consider each of them in detail.

Reserve (standby)

This is a simple, inexpensive, and therefore common type of equipment. In normal mode, the boiler is powered directly from a household outlet, and the transition to batteries occurs within a few milliseconds after a power outage.

Pros and cons

affordable price
ease of maintenance and repair

the non-sinusoidal output waveform negatively affects the equipment, but there are models with a pure sine output, and their price is noticeably higher
inability to adjust the voltage
the capacity of the built-in battery for the heating boiler is low, but it is possible to connect external batteries

Line-interactive (line-interactive)

The advantage of this circuit over the previous one will be the ability to stabilize the load supply voltage in the event of an increase or decrease in the voltage in the mains. Batteries, or rather, their energy, the system uses only in the absence of the main power supply, which increases their service life.Devices are produced in two groups depending on the form of output voltage in battery mode.

The most widely used devices have an approximated sinusoid. Their purpose is to work with switching power supplies provided in personal computers. If you need a source to provide power to electric motors, coupled with circulation pumps, the latter are more suitable.

Pros and cons

high efficiency
built-in voltage stabilization function
quick transition to offline mode when the mains voltage is turned off

mains voltage is not completely filtered from RF interference
it takes up to 20 ms to switch from mode to mode, however, this is not true for all models

Online (on-line UPS)

The most technologically advanced double conversion uninterruptible power supplies not only ensure uninterrupted power supply, but also improve power quality. That's why they cost a little more than their previous counterparts. Their use is justified only by the need for a very high quality power supply.

Pros and cons

there is no time interval between the mains disconnection and the start of battery operation
stabilized output voltage

complex device
relatively high price
in some models, the fans for cooling the inverter are very noisy

UPS rating for boilers

The TOP boilers include devices with the best, according to experts, characteristics. They have different types of designs.

Helior Sigma 1 KSL-12V

The UPS is equipped with one external battery. The device is adapted to Russian electrical networks. Weight 5 kg. Operating voltage 230 W.According to the type of construction, the model belongs to On-Line devices. On the front panel of Helior Sigma 1 KSL-12V there is a Russified LCD display showing network indicators. Input voltage range from 130 to 300 W. Power 800 W. The average cost of an uninterruptible power supply is 19,300 rubles.

Advantages:

• There is a special mode of operation with generators.
• Compactness.
• Reliability, long service life.
• Silent operation.
• The presence of a self-test function.
• Low power consumption.
• Doesn't overheat during extended use.
• Long battery life.
• Possibility of self-installation.
• Affordable price.

Flaws:

• The input voltage has a narrow tolerance range.
• Small battery capacity.

Eltena (Intelt) Monolith E 1000LT-12v

Chinese made product. Refers to On-Line devices. Fully adapted to work with Russian electrical networks. Input voltage range from 110 to 300 V. Power 800 W. The choice of voltage power occurs in automatic mode. Weight 4.5 kg. There is a Russified LCD display. The average cost of the model is 21,500 rubles.

Advantages:

• The relevance of the charging current for connecting to a battery with a capacity of 250 Ah.
• Optimal input voltage range.

The disadvantage is the high price.

Stark Country 1000 online 16A

The device is manufactured in Taiwan. The model was updated in 2018. Power 900 W. The UPS is designed to operate with two external circuits. The bespereboynik provides full protection of a copper at emergency shutdown of the electric power. Weight 6.6 kg. The average cost of the device is 22800 rubles.

Advantages:

• Automatic selection of operating power.
• Ability to work offline 24 hours.
• Battery protection against deep discharge.
• Wide input voltage range.
• Possibility of self-installation and ease of operation.

Flaws:

• Short wire.
• Average noise level.
• High price.

HIDEN UDC9101H

Country of origin China. The UPS is adapted to work with Russian electrical networks. It is considered the quietest uninterruptible unit in its class. It has an automatic system for adjusting the operation of the cooling system, so it never overheats during prolonged use. Power 900 W. Weight 4 kg. The average cost is 18200 rubles.

Advantages:

• Long service life.
• Reliability at work.
• Wide input voltage range.

• Intelligent control system.
• Compactness.

The disadvantage is the need for initial setup.

Lanches L900Pro-H 1kVA

Country of origin China. Power 900 W. The interrupter has a high efficiency. The model is adapted to the loads of Russian electrical networks, has an LCD display. It displays the mains input voltage parameters and other indicators of operating modes, including the battery charge level. The package includes software. Weight 6 kg. The average selling price is 16,600 rubles.

Advantages:

• Resistance to power surges.
• Affordable price.
• Reliability of work.

• Ease of operation.
• Long battery life.

The main disadvantage is the low charge current.

Energy PN-500

The domestic model has the function of a voltage stabilizer. Available in wall and floor versions. Operating modes have sound indication. A special fuse is installed to protect against short circuits. The graphic display is multifunctional.The average cost is 16600 rubles.

Advantages:

• Input voltage stabilization.
• Overheat protection.

• Design reliability.
• Long service life.

The disadvantage is the high noise level.

SKAT UPS 1000

The device differs in the increased reliability in work. Power 1000 W. It has the function of an input voltage stabilizer. The input voltage range is from 160 to 290 V. The average sale price is 33,200 rubles.

Advantages:

• High work precision.
• Automatic switching of operating modes.

• Reliability at work.
• Long service life.

The disadvantage is the high price.

Download

• Theory and practice of using batteries. Types of batteries. The best that can be read on the topic - • Selection and operation of batteries for autonomous and backup power supply. / Theory and practice - in detail in simple language, pdf, 6.97 MB, downloaded: 680 times./
• • Dasoyan, Novoderezhkin, Tomashevsky. Production of electric batteries / The book describes the production of electric batteries (lead-acid, alkaline, silver-zinc, etc.), provides the necessary information about the device, the most important electrical and operational characteristics, pdf, 19.88 MB, downloaded: 408 times./.

Tips for choosing a UPS for a gas boiler ↑

When choosing a UPS for a boiler, the first thing to pay attention to is the declared power of its charger. For long-term offline operation, it is better to choose an uninterruptible power supply with the ability to connect external batteries with a capacity of 100 Ah

The charger must be at least 7A.

For a gas boiler, it is better to choose an uninterruptible power supply with double conversion.

Sometimes, when the power is turned off, the uninterruptible power supply needs to ensure the operation of the boiler for quite a long time, so for a gas boiler you do not need to choose uninterruptibles with a built-in low-capacity battery (this is more for computers).

For a boiler, a UPS with external battery connection is more suitable. The number of batteries sometimes varies significantly. Depends on the design of the device and power

So, if you need to constantly supply both heat and hot water, then pay attention to models with more power than those designed specifically for boilers.

For gas boilers, online UPSs are considered the best option. Although if you already have a good voltage stabilizer in your heating system, uninterruptible power supplies of the other two types are also quite normal, because. then a stable voltage can be supplied to the boiler (from the stabilizer).

Popular UPS models for gas boilers

Solutions may, of course, be different.

One of the best options, many of the experts call Bespereboynik manufactured by Eaton Powerware. Double conversion voltage (online class) is designed to provide a pure sine wave at the output of the UPS and virtually instantaneous transfer to battery operation in the event of a power failure.

The ALAS range includes uninterruptible power supplies or UPS for gas boilers. Autonomous heating systems are becoming more widespread everywhere, and therefore uninterruptibles for gas boilers are also in great demand. What are they intended for, and how to make the right choice of UPS for a heating boiler?

Modern heating systems are fully automated, do not require human intervention to monitor the temperature, however, if the power supply is poor, it is the automation of the boiler that will not allow the rest of the equipment to start, power surges can disable the controller and thereby paralyze the operation of the entire heating system. The main cause of automation failures is precisely voltage surges in the supply network. If a failure occurs for this reason, the equipment warranty is often not covered, which indicates that modern heating systems are not able to work in conditions of poor power supply.

Unfortunately, often even a small distance from the city is the cause of low voltage in the network, and the loss of voltage in the network for a long time, especially in winter, can lead to freezing of the entire heating system and, as a result, to high material costs. In this case, the use of a voltage stabilizer for a gas boiler becomes practically meaningless, since the elimination of the consequences of an accident or a power line break can lead to a power outage for several hours. From which it follows that practically the only way to protect against such accidents is the use of an uninterruptible power supply with a long battery life.

Double conversion UPS solutions are also available, in which the input AC voltage is converted to DC, and then the inverter converts the resulting DC voltage into a pure sine wave AC.UPSs of this class provide the best level of output voltage stabilization, noise immunity and they do not have a break when the voltage is turned off, because. the source is constantly powered by the inverter, and in the event of a power failure in the network, the load immediately begins to receive power from the battery.

One of the successful examples of the implementation of such a solution can serve as a description of the project for emergency power supply of the heating system, carried out by our specialists.

When choosing a UPS for a gas boiler, first of all, you should clarify the power of your load (circulation pump and boiler electronics). If you experience difficulties, please contact our specialists who will be able to answer all your questions regarding the selection of a UPS specifically for your gas boiler.

UPS types

There are dozens of manufacturers on the market that produce uninterruptible power supplies for various price segments. However, in budget models, functionality and battery life are many times inferior to expensive devices.

According to the principle of operation, the equipment is divided into 3 categories:

• Reserved (offline);
• Continuous (online);
• Line interactive.

Now in detail about each group.

Reserve

If there is electricity in the network, then this option acts as an intermediary.

As soon as the power is turned off, the UPS automatically transfers the connected device to battery power.

Such models are equipped with batteries with a capacity of 5 to 10 Ah, which is sufficient for correct operation for half an hour. The main function of this device is to prevent the instantaneous stop of the heater and give enough time to the user to properly turn off the gas boiler.

The advantages of such a solution include:

• Noiselessness;
• High efficiency if the power is supplied through the electrical network;
• Price.

However, redundant UPSs have a number of disadvantages:

• Long switching time, on average 6-12 ms;
• The user cannot change the characteristics of voltage and current;
• Small capacity.

Most devices of this type support the installation of an additional external power supply. Therefore, the battery life is greatly increased. However, this model will remain a power switch, you can not demand more from it.

Continuous

This type works regardless of the output parameters of the network. The gas boiler is powered by battery power. In many ways, this became possible due to the two-stage conversion of electrical energy.

The voltage from the network is fed to the input of the uninterruptible power supply. Here it decreases, and the alternating current is rectified. Due to this, the battery is recharged.

With the return of electricity, the process is carried out as follows. The current is converted to AC, and the voltage increases, after which it moves to the UPS output.

As a result, the device works properly when the electricity is turned off. Also, unexpected power surges or distortion of the sinusoid will not cause a negative effect on the heating device.

The advantages include:

• Continuous power even when the light is turned off;
• Correct parameters;
• High degree of security;
• The user can independently change the value of the output voltage.

Flaws:

• Noisy;
• Efficiency in the region of 80-94%;
• High price.

Line Interactive

This type is an upgraded standby device.So, in addition to batteries, it has a voltage stabilizer, so the output is always 220 V.

More expensive models are able not only to stabilize the voltage, but also to analyze the sinusoid, and in the case when the deviation is 5-10%, the UPS will automatically switch the power to the battery.

Advantages:

• Translation occurs in 2-10 ms;
• Efficiency - 90-95% if the device is powered by a home network;
• Voltage stabilization.

Flaws:

• No sine wave correction;
• Limited capacity;
• You cannot change the frequency of the current.