Types and models of Buderus boilers – single-circuit and double-circuit

It’s likely that you’ve heard of Buderus if you’re shopping for a new boiler. Buderus boilers are a popular option for homeowners wishing to upgrade their heating systems because of their reputation for dependability and efficiency. However, choosing the best model for you can be overwhelming given the variety of types and models available. To assist you in making the best choice for your house, we’ll explain the distinctions between single- and double-circuit Buderus boilers in this post.

Let’s first define what single- and double-circuit boilers truly entail. It basically boils down to how they treat hot water. A double-circuit boiler can also supply hot water for showers and faucets, whereas a single-circuit boiler is only intended to heat your house. This distinction is important because it affects how adaptable and functional the boiler in your home is.

Let’s now explore the details of each kind. If all you need to do is heat your house, single-circuit boilers, sometimes referred to as heat-only boilers, are a simple choice. They work by heating water and distributing it to your underfloor heating system or radiators, heating your entire house. When it comes to installation, these boilers are usually less expensive and easier to use than double-circuit models.

Conversely, double-circuit boilers provide the extra benefit of instantaneous hot water. They have a separate circuit for heating water for household use in addition to heating your house. This implies that the performance of your heating system won’t be affected if you take a hot shower or turn on several faucets at once. Double-circuit boilers can save you time and trouble in the long run, despite their initial slight complexity and cost.

Features of Buderus boilers

The Buderus company manufactures various types of heating systems. They can run on gas, electricity, solid or liquid fuel, and in some cases, two or three different fuel types.

Wall-mounted and floor-standing Buderus boilers are classified based on how they are installed. This makes choosing a model that will fit neatly into the boiler room’s small space much easier.

There are single- and double-circuit Buderus heating systems. Two-circuit models enable the heating of water in parallel with the primary purpose of heating the room, while single-circuit models are limited to heating the room alone.

More details! Systems for heating that use forced draft and those that use natural draft differ. Fans are used to assist in forcing draught, which allows air intake and combustion product removal from the street or another room. When there is a natural draft, the combustion products are released into the chimney and the air intake is from the same room as the system.

Advantages

The Buderus Company has been producing heating boilers for over 120 years and casting iron for heating stoves for approximately 300 years. Over this period, the company has made a name for itself as a producer of safe, dependable, long-lasting, and high-quality heating systems that are in high demand worldwide.

The following are some benefits of Buderus heating systems:

1. Economic efficiency. Efficiency of Buderus boilers – from 92 to 115% with a fairly low fuel consumption.
2. Convenient operation. All products have an intuitive control system. After a single setting Buderus boiler will work in an autonomous mode according to the set parameters.
3. Reliability. The quality of assembly is carefully controlled at all stages of production.
4. Wide range of products. Buderus boilers are produced in different versions, so you can choose a model for any needs.
5. Adaptation to Russian operating conditions. Buderus heating systems operate successfully at low gas and water pressures and at low ambient temperatures. In addition, heating systems are resistant to voltage fluctuations.
6. Environmental friendliness. Fuel in the furnace burns almost completely, so emissions of harmful substances into the atmosphere are minimal.
7. Availability of a network of service centers throughout Russia. In case of equipment breakdown, you can count on professional assistance.
8. Durability. Service life of wall boilers – 10-15 years, floor boilers – up to 30 years.

In the world of home heating, Buderus boilers stand out as reliable and efficient options. When it comes to choosing the right Buderus boiler for your home, understanding the difference between single-circuit and double-circuit models is crucial. Single-circuit boilers are designed solely for heating water, making them ideal for homes where hot water needs are straightforward. On the other hand, double-circuit boilers not only heat water for radiators but also provide hot water for taps and showers, offering convenience for larger households. Both types come in various models with different capacities and features to suit different needs and budgets. By grasping the distinctions between single and double-circuit Buderus boilers, homeowners can make informed decisions to ensure optimal comfort and efficiency in their homes.

Device and principle of operation

All heating systems use the same device and basic working principle, although there are some variations based on the fuel type.

Device and principle of operation of the wall-mounted gas boiler

Any gas boiler’s design consists of the following components:

1. Gas burner. Its function is to supply gas into the combustion chamber and distribute it evenly by means of nozzles. Modulating burners allow you to adjust the gas supply and flame level depending on your needs. The automatic burner maintains the set temperature without user intervention.
2. Heat exchanger. It can be made of copper, steel or cast iron. Copper heat exchangers have better thermal conductivity and higher efficiency, steel ones are more durable and resistant to corrosion.
3. Combustion chamber. It can be of the open or closed type. In systems with open chambers, the combustion products of the fuel are exhausted through a special chimney-extractor, and the air to support combustion is taken from the room. Boilers with a closed chamber have a built-in fan that forcibly extracts the flue gases and discharges them into a flue duct that exits through the outside wall of the house.
4. Circulation pumps. Depending on the boiler output, there can be one or two of them; their function is to supply water to the heating circuit.
5. Expansion tank. It is necessary to compensate for excess water, which is formed as a result of its heating.
6. Automation. It is a system of devices that ensure the maintenance of a stable temperature in the heating system and in the room.
7. Measuring and regulating devices (thermometer, pressure gauge, safety valve, etc.) are installed on the burner.) necessary for normal functioning of the system.
8. Safety system. It stops the operation of the boiler in the absence of electricity and interrupts the gas supply. After the electricity supply is restored, the equipment must be started manually.
9. Frost protection system. It is triggered in the case of a decrease in the temperature of the coolant to +4…+6 ° C; in this case there is a brief activation of the boiler and heating the coolant.
10. Self-diagnostic system. Allows you to determine up to 90% of equipment faults. Information about the breakdown is displayed on the electronic display in the form of a code.

Different types of gas wall-mounted boilers operate on essentially the same principles. Sensors measure the coolant and ambient temperatures, and the controller calculates the amount of heat required to heat the space. The burner receives the proper amount of gas, which is then ignited by an electric or piezoelectric discharge.

A pump transfers the heated water from the heat exchanger to the heating system, where it is heated to the desired temperature. The burner turns off automatically when it reaches the highest temperature that the thermostat has set.

Device and principle of operation of the solid fuel boiler

Boilers for solid fuel pyrolysis operate in the gas generation mode. Any solid fuel will release gas at temperatures above +200°C when there is a limited supply of oxygen. This gas is burned in a different chamber to produce additional heat energy. As a result, two chambers are included in the design of these systems: one for fuel combustion and the other for the combustion of byproducts.

Boilers that use solid fuel (CT) have automatic controls that manage the combustion process and safeguard the coolant from overheating. Steel or cast iron make up the heat exchanger in these kinds of gadgets. The coolant is heated by the temperature of the air that contains combustion products (the smoke first goes through the heat exchanger before being released into the chimney).

Main types of Buderus boilers

Boilers are classified as cast iron or steel boilers based on the material used in their manufacture. These include universal fuels, gas, electric, liquid, and solid fuels, depending on the kind of fuel being used. Buderus boilers are installed differently for floor- and wall-mounted models based on installation principles.

Cast iron

Solid-fuel Boilers made of cast iron have a long burn time. They use coal, coke, or wood (wood or pellets) as fuel. These kinds of systems are made to be installed on floors, are small in size, and are used to heat spaces up to 400 square meters. Long service life and good thermal performance define cast iron heating systems. They can run on gas or diesel in addition to solid fuels.

Steel

Steel models have more power and are both less expensive and lighter than cast iron models. As fuel, they burn wood, coke, and hard coal. These systems are typically used to heat workspaces, private homes, and apartments with 120–300 m^.

Kindly take note! Steel boilers can be used with existing gas or liquid fuel equipment, or they can be used as a stand-alone heating system.

Universal

Boilers that are universal Buderus can run on liquid fuel (diesel) as well as gas.

These heating systems are best used in country homes, which are frequently characterized by unstable engineering communications (low gas supply pressure, power outages, etc.).

Gas

Wall and floor models, single and double circuit, with an open or closed combustion chamber, are all available for gas boilers. Buderus gas boilers can run on liquefied cylinder gas or natural gas as fuel.

Because the Buderus condensing gas boiler line uses the thermal energy of secondary gases and water vapor produced during fuel combustion, it has higher efficiency. An additional heat exchanger for water vapor condensation is included in the design.

Crucial! It is possible to drastically cut both fuel consumption and harmful substance emissions into the atmosphere by using condensing heating systems. The liquid that results is discharged into the sewage system and contains a concentrated amount of combustion products.

Electric

The Buderus electric boiler is an excellent choice for heating small spaces such as apartments and summer houses. It is wall-mounted, compact, and highly environmentally friendly. It can be connected to any type of floor or central heating system.

Kindly take note! Buderus electric boilers can be used in conjunction with solid fuel systems or as the only source of heating.

Solid fuel

For country homes where the continuous use of gas, diesel, or electricity as fuel presents a challenge, the Boiler Buderus solid fuel boiler is a good choice. The Buderus TT boiler can be powered by coke, wood and hard coal, wood pellets, or wood. Large dimensions are a characteristic of TT systems because of the amount of fuel they use.

Fuels with the fewest calories are wood products like firewood. Wood boilers are not fully automatic and have an efficiency of only 70–80%; you must refill the furnace every two to three hours. They are typically installed in baths and summer houses.

Pyrolysis solid fuel systems, which use the extra energy released during fuel gas combustion, have higher efficiency (up to 85%). Such a boiler can run for six to twelve hours without needing to be refueled.

Floor standing

Large size and high capacity are the distinguishing features of floor standing boilers. Certain models can only be put on a foundation that has been specially prepared. The Buderus Company offers a broader selection of floor heating systems than wall heating systems. Large-area buildings are the primary use for floor-standing heaters. Models of this kind include universal, gas (including condensing), liquid, and solid fuel heating systems, as well as steel and cast iron products with various burner types that operate on single- and double-circuit systems.

Wall-mounted

Because of their compact size and stylish appearance, wall-mounted boilers can be placed right into living rooms. They are typically utilized in private homes and apartments and are distinguished by their low power.

Kindly take note! Gas (including condensing) and electric wall-mounted heating systems are among the Buderus models.

Popular models of Buderus boilers

Gas boilers are the most widely used model of boilers made by Buderus.

The Buderus Logamax U072 wall-mounted gas boiler is available with power outputs ranging from 12 to 35 kW. It can be placed in spaces ranging from 30 to 350 m2 that are designated for apartments, homes, and non-residential uses. This two-circuit heating system heats the space and provides hot water to the water system.

Compact size, minimal noise level when operating, dependability, and safety are the features that define the device. The system is protected against freezing and overheating and operates steadily even in the presence of variations in electric voltage and gas pressure.

The Buderus Logano G234 WS floor gas boiler is available in 38 to 55 kW output models. It is constructed of cast iron and has an atmospheric gas burner with pre-mixing that operates without a fan. 93% efficiency is attained. These boilers are appropriate for heating spaces larger than 250 square meters.

The most widely used solid fuel boiler models are the 12 to 45 kW Buderus Logano S111-2 models. These steel heating systems feature an ash pan and a sizable loading chamber (with a log length of up to 53 cm). Wood, pellets, coal, and coke can all be used as fuel. The appliance is single-circuit and has an open combustion chamber. Ten kg of fuel are used per hour, with a 75% efficiency rate.

Operating Instructions

An instruction manual comprising the fundamental information required for correct installation, startup, and equipment adjustment is included with every product.

The following is contained in the user manual:

• general information about the boiler (technical characteristics);
• connection and maintenance rules;
• Error codes and troubleshooting techniques;
• startup and setup tips.

Crucial! Product warranties are only upheld when the guidelines in the equipment’s instruction manual are followed.

Selecting the ideal boiler for your house is essential to guaranteeing efficiency and comfort when it comes to heating and hot water delivery. There are several options available from Buderus, such as single- and double-circuit boilers, each with advantages and disadvantages of their own.

Single-circuit boilers, which provide hot water for home use or heating, have a simpler design. They are perfect for properties with limited space, such as smaller homes. However, because they can’t supply hot water to multiple outlets at once, they might not be the best option for larger households or those with high hot water demands.

Conversely, combi boilers, sometimes referred to as double-circuit boilers, provide the advantage of being able to heat and heat water with just one unit. They are popular options for contemporary homes with limited space because they save space and do away with the need for a separate hot water cylinder. Furthermore, because combi boilers only heat water when necessary, they frequently use less energy.

When choosing between single- and double-circuit boilers, it’s critical to take your household’s hot water consumption habits, available space, and financial constraints into account. Double-circuit boilers are more versatile and efficient, making them ideal for larger families or those with higher hot water consumption than single-circuit boilers, which might only be adequate for smaller households with lower hot water demands.

The decision between single- and double-circuit boilers ultimately comes down to your personal requirements and tastes. Regardless of the option you select, a high-quality Buderus boiler can help guarantee dependable and effective home heating, keeping you toasty and cozy all year round.

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