Non-independent two-circuit gas boiler

The selection of heating system is critical to maintaining a comfortable and energy-efficient home. Non-independent two-circuit gas boilers have become a popular option among the available options for many homeowners. These boilers are a desirable option for heating and hot water requirements since they combine dependability, efficiency, and convenience.

Non-independent two-circuit gas boilers have two distinct circuits for heating, in contrast to conventional boilers, which normally have one circuit. Hot water is provided by one circuit, and the home’s heating is handled by the other. Numerous benefits come with this dual-circuit design, which gives you more flexibility and control over the heating and hot water production.

One of the key benefits of a non-independent two-circuit gas boiler is its ability to provide both space heating and hot water on demand. With separate circuits for heating and hot water, homeowners can adjust the temperature of each independently, ensuring comfort and efficiency throughout the home. Whether it"s a chilly winter evening or a busy morning rush, you can rely on your boiler to deliver the warmth and hot water you need.

The energy efficiency of these boilers is an additional benefit. Non-independent two-circuit gas boilers minimize energy waste and maximize performance by separating the heating and hot water circuits. For environmentally conscious homeowners, this translates to lower energy costs and a smaller environmental impact, making them a sustainable option.

In addition, non-independent gas boilers with two circuits are renowned for their dependability and longevity. These boilers are made with high-quality materials and cutting-edge technology to withstand the rigors of regular use and guarantee years of trouble-free operation. Your boiler should be able to comfortably heat your house for many winters to come with regular maintenance.

We’ll look at the advantages of non-independent two-circuit gas boilers for insulation and heating in this post, as well as how they operate. Non-independent boilers have two circuits: one for heating and another for hot water, in contrast to conventional boilers, which manage heating and hot water separately. More efficiency and flexibility are provided by this design, which lets you prioritize hot water or heating based on your needs. Homeowners can increase the heating and insulation efficiency of their homes and save energy by making educated decisions based on their understanding of these boilers’ benefits and how they work.

What you need to know about the non-volatile two-circuit gas boiler

There are communities in our nation that experience frequent power outages. In suburban dacha settlements, this phenomenon is particularly prevalent in the winter, so residents utilize energy-efficient two-circuit gas boilers to heat their houses.

Crucial! These kinds of heaters can give the occupants full hot water as well as a temperature that is comfortable in the home. Furthermore, it blends in flawlessly with a variety of home decor styles.

There are currently both domestic and foreign manufacturers of energy-independent boilers available on the shelves of construction supply stores.

Types of energy-independent gas boilers

The utility room’s boiler room

One can divide all non-volatile units into:

• By type of combustion chamber. It comes in closed and open. In the open chamber, the oxygen needed for gas combustion is taken from the living space. In the closed chamber, air is supplied through a coaxial chimney directly from the street.
• By the number of circuits – single-circuit and two-circuit. Boilers with one circuit are used only for heating water for heating. With two circuits boilers are used both for heating the coolant in the heating system, and for heating water for household purposes.
• By location – wall-mounted and floor-mounted.

Advantages and disadvantages of energy-independent gas boilers

The benefits of energy-independent heaters are numerous, just like those of any other heating apparatus:

• The unit"s chimney arrangement ensures its safe operation. In the channels of the chimney are installed sensors that determine the level of draught. If there is a decrease or cessation of its supply, the fuel supply to the combustion chamber stops automatically.
• Adjustment of the flame intensity is automatic.
• The boiler design provides for piezo ignition.
• Long service life of the heat exchanger and the whole heating device as a whole.
• Ensuring the operating condition even at low gas head in the pipeline.
• Many models have a remote control, which is very convenient to use.
• Small installation cost. Non-independent wall-mounted boilers do not require additional elements, thus reducing the financial and time costs.

Minuses of the units

The disadvantages of two-circuit energy-independent boilers are as follows:

• When installing the heating system, the boiler must be located at the lowest point of the heating system. In this regard, there are few wall-mounted energy-independent units are produced.
• Due to the fact that the hot water does not rise above a certain point, the room may not be heated over the entire height. This also applies to hot water.
• The process of the heating system with natural circulation of the coolant is material-intensive due to the use of large diameter pipes.
• The igniter burns constantly and the gas consumption increases.
• The use of natural draught requires an increase in the diameter and height of the chimney for smoke extraction.

Boiler design feature

Floor construction plan

The thermogenerator that is integrated into the device allows it to function without a power source. There is a false belief that this kind of two-circuit boiler is already out of date. The newest energy-independent gas boiler models are made by foreign manufacturers, and their functionality is identical to that of equipment powered by the electricity grid.

One of their key characteristics is that they are limited to heating systems with gravity-driven water circulation.

The coolant rises in the boiler when it gets heated and enters the outlet pipe to reach the heating system. The hot water cools down while it moves, which can cause the circulation to stop. Large diameter heating pipes are used during installation, and they must unavoidably be positioned at a specific angle to avoid this kind of occurrence.

Circulation pumps are used in energy-independent boilers to improve their performance. They quicken the liquid’s flow when they pump through themselves. These devices run solely on electricity; when the electricity is cut off, the heating system turns on the principle of gravity.

Operating principle

Two burners are found in non-independent units. Ignition is one of them; the primary one is the other. The ignition burner is ignited by pressing the button on the boiler panel, which also activates the piezo element. The primary burner receives the flame.

The heat exchanger’s body heats up when gas is burned. Until the heat transfer medium reaches the desired temperature, the main burner runs. Once this is accomplished, the burner gradually goes out and the gas pressure is lowered. The cycle is repeated when the heat carrier’s temperature drops because the temperature sensor triggers an increase in the gas supply.

The newer non-volatile gas boiler models have an integrated valve that shuts off the gas supply in the event that there is either insufficient draught or no gas present. The purpose of this feature is to make the device safer.

Considerations for selecting a two-circuit energy-independent boiler include the room’s dimensions and height, in addition to the heating system’s operation.

The latest technology in the production of the units

A first for the Russian market

The creation of a new class of units with a non-volatile function resulted from the challenge of precisely controlling the gas boiler using automation without the inclusion of electronic components. An electric generating device is used in their design. After the burner is ignited, it starts up.

Different amounts of energy can be generated. The increased efficiency of gas combustion and heating system operation offsets the increase in gas consumption for electricity generation.

These units’ drawbacks include growing costs and dimensions. However, the cost increase is offset by a decrease in the amount of fuel specifically used to produce thermal energy. These boilers are placed in large rooms, so size is not a special factor.

Conclusion

Boilers that don’t require energy are a great choice for homes that frequently lose power. They offer warmth and comfort during chilly winter days in the house, are safe, and operate in accordance with the highest quality standards.

Non-independent boilers

Gas boilers of today come with efficient automation. By controlling the gas burner’s operation, it raises the device’s efficiency. It is in charge of ensuring that the heating element operates safely. It offers LCD display and electronic panel boiler control, which is convenient. Every automatic only functions off of the power grid. What should be done if there is no electricity available in the settlement? In this scenario, one purchases a wall-mounted gas boiler or its floor model, which is energy-independent. These models are not less powerful than their energy-dependent counterparts. Energy-independent devices can also function in a fully autonomous mode at the same time.

Relevance of energy-independent equipment

Energy-efficient gas heating boiler on a floor.

The following situations can be handled by gas boilers, energy-independent floor and wall boilers:

• in residential areas where there is no electricity supply. It can be remote settlements or single buildings;
• with frequent power outages or power surges;
• for heating objects where the autonomous power supply is used. In this case, the power of the substation or its voltage is not sufficient for the normal functioning of the heating equipment automatics .

Energy-independent heating boilers are installed in systems where coolant circulates naturally, enabling total independence from the power source.

Which types of heating elements are gas? The non-volatile heating element models listed below are currently for sale:

• by the method of installation: wall-mounted and floor-mounted;
• on the mechanism of triggering the safety system: mechanical devices and fuses operating from the voltage of the thermocouple to the gas burner;
• according to the presence of an additional heat exchanger: energy-independent gas boiler two-circuit and single-circuit.

The unit’s weight, size, and power and performance can also be taken into consideration when choosing. Two-circuit devices are available with hot water storage tanks or with flow-based heating. Currently, there is a range of gas-operating equipment based on the heat exchanger’s construction material. It can be bimetallic, steel, or cast iron. When preparing hot water that is flowing, the boiler’s second coil ought to consist solely of copper.

As you are aware, hermetic circuits must have automatic air vents for the heating system.

These are some of the possible causes of water leaks from the heating system.

Features and principle of operation of non-volatile heating appliances

A wall-mounted gas boiler that is not independent is distinguished by its lightweight and small size. It is utilized to heat rooms up to 100 square meters in size. These could be tiny private homes or apartments. Because of its remarkable weight, the floor analog can only be found on the floor or in a boiler room that has been designated especially for it. Additionally, the floor boiler has a larger capacity and is designed to heat buildings up to 100 square meters in size.

Installing non-independent equipment at the system’s lowest point is recommended for serving a heating circuit with natural coolant circulation. This will guarantee that water flows through the pipes normally.

Combustion chamber structure of the gas-powered energy-independent boiler.

Burner for a boiler. There are two different kinds of gas burners on the appliance. A match or a piezo ignition is used to light the first burner. Heat from the combustion of the gas is transferred to the heat exchanger by the ignition burner, which ignites the main burner. The primary gas burner runs until the heating medium’s temperature in the heating system reaches its highest setting. At this point, a fuse trips, cutting off the burner’s gas supply and extinguishing the flame.

The ignition burner continues to operate at this point. The main burner’s gas supply is restarted when the fuse opens and the water in the heating circuit cools down. The ignition device is used to ignite the latter. Consequently, the boiler increases the coolant temperature in the heating circuit to the predetermined level.

The actual gas burner.

Ventilation system. Non-independent heating boilers are not equipped with built-in fans for forced removal of gas combustion products. Consequently, using such equipment for home heating, you need to worry about proper carbon monoxide removal through good natural circulation. For this purpose, the gas boilers are equipped with high floor independent gas boilers chimneys with a sufficiently large diameter . The pressure difference between the inlet and outlet of the high chimney will provide a good draft, hence, and the rapid removal of combustion products of gas from the gas burner.

As for wall-mounted appliances, they can be equipped with both conventional chimneys and coaxial chimneys. The latter allow you to take the air for the combustion reaction from outside the room. However coaxial chimney assumes forced air circulation, and non-volatile equipment is not equipped with a fan. What is done in this case? You just need to reduce the length of the coaxial chimney. This will ensure good natural air circulation. But it must not be forgotten that through a short chimney a strong wind on the street can simply blow out the burner flame. That is why the coaxial pipe for a boiler with an open chamber type is an exception rather than a rule.

The pressure within the circuit is managed by the safety valve.

Boiler equipment automation. Modern non-volatile gas heating boilers that are floor- or wall-mounted come with the following safety features:

• draught control mechanism;
• thermocouple to control the presence of flame;
• safety valve;
• An automatic damper and thermometer in the system.

The draught sensor has a plate attached to it. The apparatus is positioned at the boiler’s chimney’s base. A signal is sent to the gas valve when the plate temperature reaches +65°C, which indicates that there is no draught. The gas burner fades out when the gas supply is cut off.

A safety valve is a feature of gas heating boilers that are not independent. It maintains a steady pressure within the system. The valve opens and releases extra coolant when the pressure inside the heating pipes hits the crucial 3 bar.

A thermocouple or a combination of thermocouples represents the flame control system. The gadget is positioned above the igniter to remain in the gas burner’s flame at all times. The thermocouple heats up and produces an electric current as a result. It has a 0.75 V voltage. To maintain the gas supply valve open, this is adequate. The electric current is likewise cut off if the flame goes out or the electrode’s length shortens. The valve closes when the voltage in the system drops. The gas burner is consequently extinguished as well.

The automatic energy supply valve and the thermometer system work together to keep the heating medium from overheating the system. The coolant temperature at the boiler outlet is measured by the thermometer. A signal is sent to the valve, which then shuts off the gas supply and causes the boiler to shut off as soon as it reaches the upper, critical limit. The gas supply valve reopens and the gas burner starts up as soon as the temperature of the heating medium falls to the lower limit.

A contemporary press designed for heating system pressure testing can also be used for circuit filling and flushing.

Features of two-circuit energy-independent boilers

Boiler that is not independent and has two circuits (DHW and heating).

The structure of an energy-independent gas boiler and its energy-dependent counterpart are different. Separate heat exchangers are never included with the first version. An energy-dependent boiler has a three-way valve that needs to have automation controlled for it to open and close. Since there are no electroautomatics in non-volatile appliances, the three-way valve and independent coils are not relevant. The DHW circuit is primarily served by non-independent wall-mounted gas heating boilers that use the flow method. It is better to use the accumulation tank with floor models.

The heat exchanger may have an integrated coil or be bimetallic. The first option consists of two copper tubes, one inside the other with a smaller diameter. The diameter of the second one is greater. While the internal circuit circulates water for DHW service, the external circuit circulates the heating system’s coolant.

Benefits of the design: the system’s hydro resistance is unaffected. One drawback is that hard water cannot be used with it. The rate of salt deposition on the heat exchanger’s pipes rises when there are large temperature differences between the internal and external circuits. The second drawback is that, at first, the water coming out of the faucet is the same temperature as the coolant in the heating system, which is between 70 and 100°C. The water won’t reach the ideal temperature right away.

Only floor models of the boiler are equipped with a built-in coil heat exchanger due to its substantial weight.

The integrated coil functions separately from the primary heat exchanger. It provides water to a boiler-built water tank. It is essentially a scaled-down version of the boiler and indirect water heating boiler operation. The inability to regulate or control the water’s temperature in the DHW circuit is a major drawback of the design. Benefits: The integrated coil has a long service life because it is composed of copper.

By using a flow method, two-circuit non-independent gas heating boilers can produce hot water. The heating apparatus’s weight and size are decreased, but its energy consumption rises. Indirect heating is a viable method for producing hot water. This results in an increase in the structure’s size but conserves energy carriers. This boiler has a boiler mounted next to it.

Advantages and disadvantages of energy-independent equipment

Energy-independent boiler model range.

Energy-independent single- and two-circuit gas boilers have a number of benefits in common.

• complete autonomy. The absence of an electric part allows you to mount the equipment in regions where there is no power grid or there are interruptions in the supply of electricity;
• compact dimensions. Compared to floor and wall-mounted energy-dependent analogues, energy-independent gas boilers receive the most flattering reviews regarding size and weight;
• Despite the complete absence of automation and turbo gas burner, energy-independent boilers are characterized by increased performance. This allows them to heat rooms of large areas;
• This type of equipment is guaranteed to serve for 20 years without the need for repair;
• appliances are characterized by affordable price and simplified installation.

Additionally, there are drawbacks:

• high pressure requirements in the gas distribution circuit. Without good pressure, the gas burner can go out;
• mandatory slope of pipes of the heating circuit of the building. This will ensure full circulation of the coolant. Otherwise there will be overheating of the equipment;
• the need for good ventilation of the room where the boiler is located;
• The need for a good smoke exhaust system based on natural draught.

Energy-independent equipment has a specific market niche among related products, so even with all of its drawbacks, it will always be in demand.

Buying an energy-independent gas boiler

The primary benefit of energy-independent heating technology is total independence; for example, this boiler can be installed in homes without electricity. There are numerous options available on the market today to complete these devices. They can be single- or double-circuit, floor- or wall-mounted. In this scenario, indirect heating may be required in order to prepare hot water using a flow method. Equipment is chosen based on a variety of factors, including size, dimensions, performance, and the number of circuits and installation methods.

Every energy-independent heating boiler, regardless of model, comes with a cutting-edge safety feature. This regulates the mains’ gas pressure, the heating system’s coolant temperature, and the existence of draft and flame. The equipment’s improved performance and durability are further reasons for its benefits. Additionally, there are drawbacks. These are unique specifications for the heating circuit layout, smoke extraction system, and ventilation system. A more thorough comprehension of the energy-independent boiler’s working principle will aid the following video:

Two-circuit energy-independent gas boiler

A two-circuit non-independent gas boiler is a type of boiler that uses gas to heat water for household purposes and doesn’t require an electrical connection to function. This kind of boiler works well in places where hot water isn’t available and there are frequent power outages. This kind of boiler equipment is structurally designed with outputs for both supplying the hot water supply system and connecting to the heating system.

The principle of operation of an energy-independent two-circuit gas boiler

Due to the thermogenerator located inside, two-circuit energy-independent gas boilers do not require a power line connection in order to operate. A piezo element that is activated by pressing a button ignites a special ignition burner when gas is supplied to the boiler. Additionally, the ignition burner will never stop burning. The ignition burner of the boiler ignites the main burner at the appropriate times, heating the coolant and the water in the water supply circuit.

The primary burner operates until the coolant reaches a predetermined temperature, at which point it shuts off and cuts off the gas supply. The gas supply is turned back on and the ignition burner ignites the boiler’s main burner once the thermoregulator has adjusted the coolant temperature to a predetermined threshold. Subsequently, the hot water circuit and the heating medium are heated once more.

Features of installation of energy-independent two-circuit gas boilers

Understanding a few subtleties is essential when installing such equipment:

– The heating mains must be installed at a slight angle in order for the gas boiler, which uses no energy, to efficiently heat the room and ensure proper water circulation.

The diameter of the heating system’s pipes needs to be sufficiently large.

– The heating mains must be as straight as possible; that is, no needless bends should be included.

– The installation of an expansion tank is necessary to evacuate extra gas that arises from the heating medium’s temperature rise.

Selection of energy-independent two-circuit gas boiler by capacity

Boiler equipment capacities are determined using proprietary formulas and methods. However, when making independent calculations, usually follow the rule that a boiler with a capacity of 1 kW is meant to heat 10 square meters of space. Because two-circuit boilers can supply hot water in addition to heating a space, it is advised to select a boiler capacity that is 10–40% higher than what would be needed for a typical room.

Drainage of combustion products

Since the boiler equipment is energy independent, a passive chimney must be installed to remove the combustion products, which include gas and smoke. Most often, such a chimney goes outside through the roof to ensure a sufficient air draft. It should also be taken into account that with a passive chimney, part of the carbon monoxide still enters the room, so to ensure the safety of human health, it is necessary to ensure good ventilation of the room, or install boiler equipment in a separate room. Most often gas floor heating boilers are installed either in annexes to the building or in a separate boiler room. Modern energy-independent gas boilers, whether floor-standing or wall-mounted, are equipped with a draught control system. When the draught decreases, the gas supply is reduced and when there is no draught or even a reverse draught, the burner is automatically switched off, thus ensuring the safe operation of the boiler equipment.

Methods of heating water for hot water supply

The way that two-circuit heating boilers heat water for the hot water supply sets them apart from one another. There are primarily two approaches. These two methods are the storage method and the flow-through method. (See also: Single-circuit gas boiler on a floor.)

An extra heat exchanger is fitted in the boiler to heat the water that passes through it in order to facilitate flow heating of water. However, not all of the needs for hot water supply in the home can be met by this heating method. Gas boilers that are mounted on walls typically use the flow method for heating water.

It is possible to outfit a gas boiler floor energy-independent two-circuit boiler with a storage system in addition to a flow water heating system. The accumulation method involves installing a boiler in the boiler to heat the water. Additionally, the hot water supply system already receives water from the boiler. Simultaneously, there are no noticeable temperature changes while using the water. A whole family’s needs for hot water supply can be satisfied by these boilers.

Advantages of energy-independent two-circuit gas boilers

Let us enumerate the primary benefits of these models:

– Autonomy in terms of energy. Electricity is not needed to run boiler equipment. The system is completely self-sufficient and takes care of the room’s hot water and heating needs on its own. Additionally, this kind of boiler can be used in places where power outages occur frequently because it doesn’t require electricity. (See also: How to figure out a gas boiler’s capacity.)

– Hot water source. Purchasing additional equipment is not required to supply hot water to the premises. Two issues are resolved by one boiler at once.

Minimal heat loss while in use.

– Operational safety, which is attained through draft control.

Feature	Explanation
Two-circuit system	A two-circuit gas boiler has separate circuits for heating water for the central heating system and for providing hot water for taps and showers. This means you can heat your home and have hot water on demand simultaneously.
Non-independent	In a non-independent system, the operation of one circuit depends on the other. In the case of a non-independent two-circuit gas boiler, the heating circuit relies on the hot water circuit to function properly and vice versa.

There are a number of benefits to selecting a non-independent two-circuit gas boiler for the insulation and heating needs of your house. First of all, it heats the house and produces hot water for domestic use, combining efficiency and convenience into one unit. When compared to separate systems, this dual functionality can save installation costs and space. Furthermore, compared to their single-circuit counterparts, these boilers are frequently more energy-efficient, which lowers utility costs and has a positive environmental impact.

The capacity of a non-independent two-circuit gas boiler to deliver a steady supply of hot water on demand is one of its main advantages. For homes of all sizes, this means that there will be no more waiting for the water to warm up, providing comfort and convenience. Instant access to hot water can make a big difference in day-to-day living, whether it’s for taking a shower, doing laundry, or washing dishes.

Additionally, these boilers usually have sophisticated features like temperature controls and programmable thermostats that let users tailor their heating preferences to their needs and schedule. This degree of control optimizes heating usage based on occupancy and usage patterns, which improves comfort while also helping to save energy.

The most important factors to consider when choosing a non-independent two-circuit gas boiler are safety and dependability. The likelihood of malfunctions and accidents can be reduced by selecting a reliable brand and making sure that trained professionals install it properly. In order to keep the boiler operating effectively and extend its lifespan, regular maintenance and servicing are also essential.

To sum up, a non-independent two-circuit gas boiler provides a practical and effective way to heat and supply hot water for homes. For homes wishing to upgrade their heating systems, its dual functionality, energy efficiency, and customizable features make it an appealing option. Households can save money and have dependable comfort for many years by making an investment in a high-quality boiler and placing a high priority on safety and upkeep.