Non-independent wall-mounted two-circuit gas boiler. Models

An effective heating system is crucial for maintaining a warm and comfortable home. A wall-mounted, two-circuit, non-independent gas boiler is a common choice for many homes. These boilers are a flexible option for residential heating systems because they are made to provide both hot water and heating.

Non-independent wall-mounted two-circuit gas boilers come in a variety of models, each with special features and functionalities. The size, heating capacity, energy efficiency, and extra features like digital controls and programmable settings are the main differences between these models.

Selecting the ideal boiler for your house can be difficult, but knowing the various models on the market will help you choose wisely. There’s probably a model that suits your needs, whether you’re searching for a high-capacity boiler for a larger home or a compact boiler for a small apartment.

Wall-mounted two-circuit gas boilers from well-known brands like [Brand A], [Brand B], and [Brand C] are available. Every brand might have a few models with different features, so you could pick the one that best fits your needs and price range.

Model	Description
Bosch Greenstar	High-efficiency boiler with dual heat exchangers for both heating and hot water
Viessmann Vitodens	Compact boiler featuring advanced combustion technology for optimal energy usage

Modern wall-mounted energy-independent gas boilers

Using a wall-mounted, energy-independent gas boiler is, of course, the best way to heat the entire house. In the event that the electricity supply is unstable, a wall-mounted gas boiler of this kind is essential. The device’s complete autonomy and additional electricity savings are provided by mechanical control of its units and functions.

Types of combustion chambers of non-independent boilers

Make sure the model you select for your wall-mounted gas heating boiler is appropriate for your particular situation before making your purchase. Experts in the field of electrically independent gas equipment may need to be consulted for this.

Additionally, you ought to become acquainted with the primary characteristics of gas devices that are electrically independent and intended for heating, contingent upon the kind of combustion chamber:

The equipment in an open combustion chamber draws air from the space in which it is installed. The removal of combustion products and exhaust gases produced during the operation of the gas heating boiler occurs through the chimney, whose presence is required. It is highly advised to install an electrically independent boiler in a separate room called the furnace room.

Utilizing an enclosed combustion chamber enables the utilization of outdoor air (street). In this instance, a coaxial type chimney is utilized. It enables you to exhaust the combustion products that are produced during the heating process and draw in an adequate volume of outside air, both of which are essential for the gas boiler to function properly.

This type of wall-mounted gas electric-independent boiler is more efficient than other gas boilers, which translates into better fuel combustion. This demonstrates how environmentally friendly such equipment is. Gas boilers that are wall-mounted and non-independent, featuring a closed combustion chamber, eliminate the need for an additional room and ensure the safety and comfort of their users while producing high-quality heating.

Installation features

Additionally, a non-independent gas boiler has a number of features that have high requirements and call for a heating system:

• pipes should have a relatively large diameter;
• it is necessary to install an additional expansion tank;
• it is necessary to have a chimney, which will provide a good natural draught;
• it is desirable that the installation of the heating system was made at an angle and did not have unnecessary bends;
• it is desirable to install a system of additional ventilation in the heating system;
• Gas must be supplied under sufficient pressure.

Because the coolant in these types of boilers heats relatively slowly, you will need to consider your heating system’s characteristics when evaluating whether installing an energy-independent boiler is feasible. Wall-mounted boilers that don’t require electricity can heat an area more uniformly, produce hot water more quickly, and make it simpler to control the heating system’s temperature regime.

Characteristics and principle of operation

You receive a number of benefits if the energy-independent gas boiler meets your needs in terms of parameters and technical specifications.

In contrast to a boiler that requires energy:

• to work wall-mounted gas energy-independent boiler does not require electricity, and it has more power in comparison with its energy-dependent counterpart;
• The size and weight of such an electrically independent gas appliance is lower than analogs that depend on electricity, due to the absence of a pump and tank in the design.
• The efficiency of the equipment increases many times in the event of power outages.
• high efficiency.

Mechanical controllers are used in wall-mounted gas heating boilers that are non-volatile and are in charge of the entire device. The main burner of the gas unit is ignited by pressing the piezo ignition button on the ignition burner. When the switch-on sensor reaches a specific temperature, the main burner ignites. The same sensor turns off the gas supply in the event of flame extinction.

Maintaining the heating mode’s temperature, which is accomplished by using a special valve to change the gas pressure. The wall-mounted electrically independent boiler is programmed to automatically turn off the gas when the heating system reaches the desired temperature.

The liquid heats up, expands, and rises to provide the required pressure for the room’s or house’s heating system. Heat is transferred from the pipes to the radiators by the heating system’s coolant, which is constantly circulating.

Single-circuit and two-circuit units

Boilers that are wall-mounted and require no energy are classified as single- or two-circuit units. Single-circuit wall-mounted boilers are typically only intended to heat a space; in contrast, two-circuit boilers guarantee that hot water is always available in addition to heating the space. As a result, it is possible to avoid installing extra boilers, which results in a significant cost and space savings.

There are two ways to heat the water:

• by the flow method using the heat of the heat exchanger, such devices do not have a tank for accumulating water;
• accumulative, in which case the design includes a reservoir for heating.

This kind of design has unique outputs for attaching to the hot water supply system and the heating system, as well as connecting sockets between the appliance and the system. A thermogenerator, housed inside such a boiler, regulates the hot water’s temperature to an exact degree.

Safety of equipment operation

Electrically independent boilers don’t need a special room because of their increased safety.

A system of safety valves built into the design of wall-mounted boilers guarantees the equipment’s operational safety.

• in the absence of draught;
• in case of overheating;
• in the absence of flame;
• in case of a reduction of the limit pressure in the system;
• when the system heating temperature has reached the required value.

The cast iron heat exchanger in these wall-mounted energy-independent boilers is structurally shielded from undesired condensation. The coolant is protected from overheating by a unique cooling circuit, which keeps the temperature below 110°C. The long-term trouble-free operation of heating equipment is ensured by its simple design and ease of operation and maintenance.

Wall-mounted non-independent gas boilers

Wall-mounted non-volatile gas boilers are the best choice for heating small homes in areas where power outages are frequent but gas connections are possible. The primary benefits of this kind of boiler are its minimal space requirements and lack of reliance on electricity.

Operating principle of wall-mounted non-independent gas boilers

Since this kind of boiler doesn’t require electricity to run, it is energy independent. Put differently, natural air draft is used in heating systems equipped with these types of boilers.

Gas independent boilers are equipped with two burners, one of which is called the ignition burner and the other the main burner. When the ignition button is pressed, the piezo element is activated, which ignites the ignition burner, which in turn ignites the main burner. The main burner heats the heat exchanger. It works until the heat exchanger is heated to a certain temperature, after which the gas supply is reduced and it stops burning. The system then waits for a signal from the temperature sensor, which is triggered when the heat exchanger reaches the lower temperature threshold. The ignition burner ignites the main burner again after receiving a signal from the temperature sensor, and the system starts supplying gas. Heating of the heat exchanger starts.

Reverse draught valves, which cut off the gas supply in the event of insufficient or nonexistent draught, are also present in the majority of these boiler models. The equipment’s operating safety is increased by this valve.

Design features of the heating mains

Since gas heating boilers don’t fluctuate, the heating mains’ quality water circulation requires the fulfillment of the following requirements:

– The main line must not be curved in an unnecessary manner;

Pipes must be installed at an angle;

– The heating system’s pipes need to have a big diameter.

Capacity of wall-mounted non-independent gas boilers

Energy-independent wall-mounted gas boilers are relatively lightweight and compact boiler equipment models. They work well in settings where interior space efficiency is a key consideration. Thus, and thus, the traits of their performance. Wall-mounted boilers can weigh up to 50 kg and have a maximum power of 35 kW. Wall and floor boilers compute the same amount of boiler output needed for the heated room.

Single-circuit and two-circuit gas boilers wall-mounted energy-independent

There are two types of gas boilers that are wall-mounted and energy-independent, based on the construction of their combustion chambers. Boilers with one or two circuits are these. Boilers with a single circuit are solely intended to heat a space.

Hot water supply is another function that two-circuit boilers accomplish in addition to heating the space. Additionally, there are two methods for heating water in boilers to meet the demands of hot water supplies: flow and storage. The flow method suggests that the flow method heats the water. The most prevalent method of water heating in wall-mounted gas boiler equipment models is this one. The boiler that uses the accumulative method of water heating is one that heats water. The most common technique for heating water for the room’s hot water supply is to use non-volatile, energy-independent gas floor boilers.

Chimney and ventilation

Despite being energy-independent, this kind of boiler needs a chimney to function normally, which can supply a good natural draft of air. These chimneys are highly costly to install, and installation guidelines must be followed.

When using energy-independent gas boilers, the ventilation system needs to be given separate consideration. Because the natural chimney might not be able to remove all of the combustion products, it may be necessary to install a ventilation or exhaust system.

Advantages of energy-independent wall-mounted gas heating boilers

Let’s ascertain the primary benefits of this type of heating apparatus:

– Electricity is not required. There is no need to connect electricity for the boiler’s operation or the heating system as a whole. For the system to continue operating without interruption, no additional hardware, such as continuous power supplies or batteries, needs to be installed. (See also: Boilers for industrial gas heating)

– Compact weight and size. Wall-mounted boilers blend in nicely with any interior decor because of their compact size, which allows them to take up little internal space. The equipment can be mounted on almost any wall due to its sufficiently low weight.

– Excellent effectiveness. This criterion applies to almost all gas boiler equipment models, increasing their marketability to consumers.

– Security. The boiler can only be manually turned on when the gas supply is cut off, as the reverse draught valve controls the current gas supply based on the natural draught force. (See also: Which gas boiler mounted on the wall is superior?)

– The installation cost. Because an energy-independent wall-mounted gas boiler doesn’t need a lot of extra components to operate, it requires less labor, which lowers the cost of installation.

Disadvantages of non-volatile wall mounted gas heating boilers

Allow us to now focus on the drawbacks:

– Specifications related to the heating system. There must be no needless bends, the heating system must be installed at a low angle, and the pipe diameter must be sufficient.

– The requirement for a chimney that offers a superior natural draft.

– The requirement to install a ventilation system in order to clear the space of any unintentional combustion products.

Installing a gas relief valve is necessary.

– The gas line must be under enough pressure to prevent the boiler from going out.

Only when there is an index link pointing to the material page is the use of materials allowed. Please send an email to dom@otopimdom.ru with any questions.

Non-independent boilers

Gas boilers of today are outfitted with effective 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 easy boiler control through an LCD display and electronic panel. Automation does not function without a power source. What should be done if a settlement’s electricity supply is cut off? In this scenario, purchase a floor-mounted or wall-mounted gas boiler that uses no energy. 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

Non-volatile gas heating boiler on a floor.

Boilers powered by gas Non-volatile wall-mounted and floor boilers are appropriate for the following situations:

• in residential areas where there is no electricity supply. These may be remote settlements or single buildings;
• in case of frequent power outages or power surges;
• for heating objects where autonomous power supply is used. In this case, the power of the substation or its voltage is not enough 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.

What kinds of heating elements can be gas? The following energy-independent heating element models are currently on the market:

• According to the method of installation: wall-mounted and floor-mounted;
• according to the mechanism of triggering the safety system: mechanical devices and fuses, working 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 appliances are available with hot water storage tanks or with water heating built-in. 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 through a flow-through system, the boiler’s second coil needs to be made entirely of copper.

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

Here are some explanations for potential water leaks from the heating system.

Features and principle of operation of heating energy-independent devices

The wall-mounted gas boiler that is energy-independent is distinguished by its lightweight and compact size. It is utilized to heat spaces up to 100 square meters in size. These could be modest private homes or apartments. Due to its remarkable weight, the floor analog can only be placed on the floor or in a boiler room that has been specifically reserved for it. Increased power is another feature of floor boilers, which are designed to heat buildings that are at least 100 square meters in size. м.

The equipment that does not require energy and provides the heating circuit with natural coolant circulation ought to be installed at the system’s lowest point. This will guarantee that water flows through the pipes normally.

Combustion chamber structure of the energy-neutral gas boiler.

Burner for a boiler. There are two different kinds of gas burners on the appliance. The former is started using piezo ignition or spits. 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 gas supply to the main burner is resumed when the fuse opens and the water in the heating system circuit cools down. The ignition device ignites the final one. Consequently, the boiler increases the coolant temperature in the heating circuit to the predetermined level.

The actual gas burner.

System of ventilation. Boilers that use energy-independent heating do not have integrated fans to remove combustion products from gas. Because of the excellent natural circulation that results from using such equipment for home heating, one must be concerned about the appropriate removal of carbon monoxide. Gas boilers that are energy-independent floor standing boilers have high flues with a big enough diameter for this reason. Good draught will be ensured by the pressure differential at the high chimney’s inlet and outlet, which will speed up the removal of combustion products from the gas burner.

Wall-mounted appliances have the option of being fitted with coaxial or conventional chimneys. The latter let you bring in outside air to fuel the combustion process. However, forced air circulation is assumed in coaxial chimneys, and energy-independent equipment does not have a fan. In this instance, what is done? All that needs to be done is shorten the coaxial chimney’s length. This will guarantee optimal natural ventilation. However, one must keep in mind that a strong wind outside can easily extinguish the burner flame through a short chimney. For this reason, a boiler with an open type of chamber and a coaxial pipe is an exception rather than the rule.

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

Automation of boiler equipment. Energy-independent gas heating boilers for walls and floors that are part of contemporary assemblies come with the following safety features:

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

The draught sensor has a plate attached to it. The apparatus is positioned at the boiler chimney’s starting point. 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 is extinguished when the gas supply is cut off.

A safety valve is a feature of gas heating boilers that are not independent. It keeps an eye on the system’s pressure consistency. The valve opens, releasing extra coolant, as soon as 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 generates an electric current. It has a 0.75 V voltage. To maintain the gas supply valve open, this is adequate. The electric current is also cut off if the flame goes out or the thermocouple’s (electrode’s) length decreases. When the system voltage falls, the valve shuts. The gas burner is consequently extinguished as well.

The heating medium in the system is kept from overheating by the thermometer system in conjunction with an automated energy supply valve. 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 coolant temperature reaches the lower limit.

The press used today to test heating systems’ pressure is also appropriate for filling and flushing the circuit.

In this article, we delve into the realm of non-independent wall-mounted two-circuit gas boilers, exploring various models available on the market. These boilers serve a crucial role in heating and insulating homes efficiently. Unlike their independent counterparts, these boilers rely on a connection to the central heating system, offering a convenient solution for homes with limited space. We"ll discuss the key features and benefits of different models, considering factors like heating capacity, energy efficiency, and ease of installation. Whether you"re a homeowner looking to upgrade your heating system or a professional seeking insights into the latest boiler technologies, this article aims to provide valuable information to help you make informed decisions for your heating and insulation needs.

Features of two-circuit energy-independent boilers

Boiler that runs on two circuits without using energy (DHW and heating).

The structure of the non-independent gas boiler two-circuit is different from that of the energy-dependent one. Separate heat exchangers never complete the first option. An energy-dependent boiler has a three-way valve, which needs to have automation control over when it opens and closes. Since there are no electroautomatics in non-volatile appliances, the three-way valve and individual coils are meaningless. The DHW circuit is primarily served by energy-independent wall-mounted gas heating boilers that operate in a flow-through fashion. It is better to use the accumulation tank with floor models.

The heat exchanger may have an integrated coil or be bimetallic. The first variation shows two copper tubes, one inside the other and with a smaller diameter. The diameter of the second is greater. While the inner circuit circulates the water for DHW service, the outer circuit circulates the heating system’s heating fluid.

Benefits of the design: the system’s hydro resistance is unaffected. Its inability to be used with hard water is a drawback. The rate of salt deposition on the heat exchanger pipes increases when there are large temperature differences between the external and internal circuits. The second drawback is that, at first, the water that flows from the tap is 70–100°C hot, the same temperature as the coolant in the heating system. The water won’t reach the proper temperature right away.

Due to its large weight, the heat exchanger with an integrated coil is only available with floor standing boiler models.

The primary heat exchanger does not affect how the integrated coil functions. It provides water to a boiler-built water tank. This is just a scaled-down version of the boiler and boiler indirect water heating prototype. The incapacity of the design to regulate or control the water temperature in the DHW circuit is a major drawback. Benefits: The integrated coil has a long service life because it is composed of copper.

Gas heating boilers with two circuits that are not independent can produce hot water in a flow-through fashion. The heating apparatus’s weight and size are decreased, but its energy consumption rises. Indirect heating can be used to generate hot water. Although it uses less energy, the structure is larger. This boiler has a boiler mounted next to it.

Advantages and disadvantages of energy-independent equipment

Energy-independent boiler model range.

Energy-efficient single- and two-circuit gas boilers have many of the following benefits in common:

• complete autonomy. The lack 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 with floor and wall energy-dependent analogs, energy-independent gas boilers reviews regarding size and weight receive the most flattering;
• Despite the complete absence of automatics and turbo gas burner, energy-independent boilers are characterized by increased efficiency. This allows them to heat large areas;
• this type of equipment is guaranteed to serve for 20 years without the need for repair;
• The devices are characterized by affordable price and simplified installation.

There are also drawbacks:

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

For both comfort and efficiency, it’s critical to select the ideal wall-mounted gas boiler for your home’s insulation and heating requirements. Wall-mounted, two-circuit gas boilers that are non-independent come in a variety of models to meet different household needs.

Due to their dual purpose of heating and hot water production, these boilers are ideal for a variety of residential applications. Homeowners can choose from a variety of models to find the one that best suits their heating needs and budget.

A number of factors, including your home’s size, number of occupants, and hot water usage patterns, should be taken into consideration when deciding which model to buy. Certain models might be better suited for larger households with higher hot water demands, while smaller homes with lower usage requirements might benefit more from other models.

When choosing a boiler, it’s also critical to give energy efficiency top priority. Seek for high-efficiency models to guarantee top performance and gradually reduce energy costs. Purchasing an energy-efficient boiler lowers your carbon footprint in addition to saving money.

To sum up, wall-mounted, two-circuit gas boilers that are not independent provide a useful and effective way to heat and provide hot water in residential settings. You can enjoy a comfortable home while minimizing energy consumption and costs by selecting the appropriate model based on the needs of your household and giving energy efficiency first priority.