Uninterruptible devices for heating boilers

A heating boiler in winter is a key thing in the whole house, especially if it is private and located outside the city. This means that quick help in the event of a breakdown or blackout will not be able to come. In order to protect yourself from such troubles, you should take care of a spare current source in case of voltage drops in the network or a power outage. The uninterruptible boilers for heating boilers do an excellent job with this.

Uninterruptible power supplies for heating boilers

Purpose

The UPS will provide the boiler with an additional power source, but it will not always be able to solve all the problems of guaranteeing a backup power source. It is important to remember that the generator cannot be replaced, and if there is a situation that the period of absence of light equals the time when it is there, then the uninterruptible power supply will not be able to work normally, since it takes longer to charge than it is discharged. There are also a number of specific cases when it will not help.

With constant unforeseen situations UPS Is a useful and necessary thing. Its purpose is to provide constant voltage within the specified limits, and if it is often unexpectedly disconnected electricity, or drops occur, then this device always helps out in such force majeure situations.

While there is no electricity in your house it is still warm

Principle of operation

Functioning as an auxiliary power source is possible as the UPS can store energy during charging and then release it as needed. The design of the device implies autonomy and a minimum of settings: it only needs to be connected to the boiler. Uninterrupted for gas heating boilers, which are now most common, is only necessary to maintain the operation of the pump, the consumption of which is minimal. This figure ranges from 100-200 watts. The battery for the UPS has a significant effect, on which the period of its operation will fully depend upon a power outage.

Battery for UPS

Video: UPS operating principle

How does it work?

In order for the UPS to operate in nominal mode, it also requires a power source in the form of a 12 V battery with a charging unit.The larger the battery capacity, the longer it can maintain autonomy. Under normal conditions this device is turned off and stores energy in its batteries. From the network, the voltage goes directly to the needs of the boiler, bypassing the UPS. Once the batteries are fully charged, energy passes through them in transit. If the voltage in the network disappears, the device begins to draw energy from the batteries, and the opposite process occurs. From the battery, the current is converted to the required parameters to power the boiler. It will be able to allow the heat source and other electrical appliances that are connected to it to continue to work.

UPS operating principle

UPS types

There are two types of UPS:

• offline;
• online.

Relative to the first type, they have less internal voltage; for their functioning, from 1 to 4 batteries are needed. The period of switching to them will last from 4 to 10 ms. If the boiler does not have an automated turn-on system after the appearance of voltage in the network, this type will not work. It is cheaper because the unit itself is inexpensive and requires fewer batteries to operate. But in this case, you need to buy another device, namely: Voltage regulator... This type is most often used for solid fuel boilers and circulation pumps in other types.

Offline UPS for boiler and circulation pump

The second type has zero switching time to the battery resources, they have double conversion, and the stabilization function is well expressed. They are more adapted to gas and diesel heat sources. This type is more expensive and is able to reliably protect the components of the heating system.

Voltage Regulated Online UPS

Selection of performance

In order to correctly select the power of the uninterruptible boiler for the boiler, it is necessary to calculate the power of all devices that will ensure the stable operation of the heating system. This includes pumps and automation. Summing up all these indicators, you can reach the desired UPS power. But it is better to insure for reliability and look for a device with a power 20-30% higher than necessary, it will help during the peak load period, which will most likely occur during start-up.

On average, the boiler pump consumes no more than 150 W, which means that an apparatus with a power of 300 W is required. With double pumping, this figure rises by 400-500 W.

DIY UPS

If you are familiar with electrical engineering, then you should try to assemble uninterrupted power supplies for heating boilers with your own hands. But do not be encouraged: most often, homemade devices are still inferior in quality and reliability, as well as other indicators, to industrial designs. If you do the whole scheme yourself, you will also get savings:

• when you take ready-made elements and install them, then about 30% savings;
• with self-assembly from individual parts, about 70% is obtained.

• Power supply from the mains with high efficiency and preferably of a pulse type. The voltage should be 28.8 V at 50 A. It will allow you to connect the battery without adapters, directly. It also guarantees a full and regular charge.
• A conventional 12 V car battery.
• Inverters with menandr characteristics at the output of 310 V and 200 Ah.
• High harmonic resonant filter. It is collected independently.

DIY UPS

Most of the components, except the last one, can be purchased at specialized radio parts stores. They should be connected according to the diagram:

UPS wiring diagram

An apparatus of this type can be used in different schemes, and not only for a boiler. In this case, you only need to maintain a normal power balance.

conclusions

If you live in a country house and have autonomous heating system, which functions with a heating boiler, then without standby power supply not enough.If the shutdown duration does not differ and the period without light is much shorter than with it, then connecting a UPS to the boiler will be an excellent option. It does not work alone, but with a battery, and the more their number, the longer the system will be able to function. When choosing a UPS, you should pay attention to its type, since not all are equally "useful" for a particular type of boiler.

Video review on choosing a UPS for a heating boiler

 

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