In this article we will look at the selection of automation for heating systems of individual houses. Typical tasks that a heating system solves are heating rooms using radiators, maintaining a comfortable temperature in underfloor heating circuits, cooking hot water.

What is a heat supply system for an individual building?

Any modern individual housing is equipped with a heat supply system, which usually includes four components:

• source of thermal energy;
• radiator heating system;
• underfloor heating system;
• hot water preparation system

Let's look at the automation of these four systems.

1. Boiler and hot water preparation system

In most cases, the source of thermal energy for heating an individual building is its own boiler running on gaseous or liquid fuel. Modern boilers are divided into two large groups: single-circuit and double-circuit.

Double-circuit boilers designed for heating and supplying coolant to the heating circuit, as well as for preparing hot water (DHW). Double-circuit boilers include a hot water heating heat exchanger, a three-way valve for switching the heating / hot water preparation mode, a circulation pump, and automation. Hot water is prepared in a flow-through heat exchanger, so the boiler must have sufficient power to cover the peak demand for hot water. To connect a double-circuit boiler, manufacturers recommend installing shut-off valves, as well as filters at the entrance to the boiler of cold drinking water and coolant from the heating system.

Single-circuit boilers are designed to heat the heating circuit coolant. The boiler usually includes a burner control and protection system. Circulation pumps and the hot water heating heat exchanger must be installed separately. Often with single-circuit boilers use a boiler indirect heating, representing storage tank hot water with a built-in heat exchanger. To supply coolant to the heating circuit and DHW heating The boiler piping pump unit DSM-BPU is used.

The heating circuit pump pumps coolant through the boiler, radiators and (using a mixing unit) through the heated floor ducts. Thermostatic regulators are installed in the heating circuit, which change the resistance of the circuit depending on the room temperature. To ensure the circulation of coolant through the boiler in any operating mode, a bypass valve AVDO is provided in the heating circuit of the DSM-BPU pump unit. The AVDO valve can be configured to maintain the required minimum flow depending on the boiler used. The DHW circuit pump pumps coolant through the boiler and indirect heating boiler. The resistance of the DHW heating circuit is constant, so installing a bypass valve is not required.

As a rule, the boiler power is selected based on the average heat consumption of the heating circuit and DHW. Peak loads when using hot water are covered by the hot water reserve in the indirect heating boiler. In this case, the boiler operates either on the heating circuit, or, if the water temperature in the indirect heating boiler drops below the set value, it switches to heating hot water. This operating mode is called “DHW priority”. Switching heating circuits using the DSM-BPU is very quick and simple: just switch the supply voltage from the heating circuit pump to the DHW heating circuit pump. Installed at the outlet of each pump check valves will ensure the correct direction of coolant flow. Thus, to implement DHW priority, it is enough to connect the pumps of the DSM-BPU unit to the thermostat of the indirect heating boiler or to the boiler control system.

The boiler pump assembly includes filters for each circuit, safety valve, tap for connection expansion tank, shut-off valves on each circuit for convenience service systems. Installation of additional pipeline fittings not required.

2. Radiator heating

The radiator piping must perform the following main functions: regulate the radiator power depending on the room temperature, shut off the flow of coolant into the radiator for maintenance, repair or replacement, provide the ability to drain the coolant from the radiator during repairs

You can regulate the power of radiator heating in two ways: by controlling all radiators in one room simultaneously using a room thermostat or by controlling each radiator independently using a radiator thermostat

A room thermostat is used if the radiators are closed decorative grille, in this case, the temperature at the radiator installation site differs significantly from the temperature in the room, and the radiator thermostat will not work correctly. Also, if the room has a large number of radiators, it is more convenient to regulate the temperature in the room with one device - a room thermostat. Using room thermostat The radiators located in this room are connected to a distribution manifold on which thermoelectric actuators are located. The drives open and close the coolant supply to the radiators at the command of the room thermostat. The signal from the room thermostat can be sent via wires (wired version) or as a radio signal (wireless version) to the receiver. For easy connection of thermoelectric actuators, you can use the FH-WC patch panel.

To be able to turn off the radiator and drain the coolant from it, it is necessary to use special shut-off valves, for example RLV-KD for radiators with bottom connections or 2 pcs. RLV for radiators with side connection. A drain valve with a 3/4" hose attachment can be connected to these valves and prevent coolant from entering the Decoration Materials during maintenance and repair

Drain valve for valves RLV, RLV-KD with nozzle for hose 3/4"

When using radiator thermostats, a thermostatic element, a thermostat valve and stop valve, or a combination of these elements

Based on the type of connection, radiators are divided into radiators with side connections and radiators with bottom connections

Let's consider options for piping radiators with side connections.

a) Thermostatic element, thermostat valve and shut-off valveThe thermostatic element can be a gas-filled bellows element RA2994 or a living eco electronic thermostat.

RA2994

living eco

Depending on the pipeline layout, different valve designs are used. thermostat RA-N

Angle valve RA-N

Valve RA-N straight

Three-axis valve RA-N for connection on the right

Three-axial valve RA-N for connection on the left

Angle valve RA-N with side connection

There are also chrome-plated and press-fit versions available, see

The shut-off valve is a straight or angle shut-off valve RLV.

Angle shut-off valve

Shut-off valve straight

There are also chrome-plated and press-fit versions available, see

b) Thermostatic element, side connection fitting RA-K

The headset combines a thermostat valve and a shut-off valve. The use of a headset allows you to lower plastic pipelines below the level of the radiator and thus prevent contact with them. sunlight causing premature aging plastic pipelines. In addition, the headsets look very aesthetically pleasing and simplify installation.

The RA-K set is compatible with thermostatic elements RA2994 and living eco. Depending on the method of laying pipelines, you should choose a headset with bottom or rear connection of pipelines.

Headset with bottom connection
Headset with rear connection

c) Thermostatic element, set for side single connection RA 15/6TV

The RA 15/6TV set is compatible with thermostatic elements RA2994 and living eco. This headset allows you to hide the radiator trim as much as possible. It should be borne in mind that a single connection reduces the heat transfer of the radiator by 15...20%.

Let's consider options for piping radiators with bottom connections

a) Bottom-connected radiator without built-in thermostat valveIn this case, a VHS headset and thermostatic element should be used. The thermostatic element can be a gas-filled bellows element RA2994 or a living eco electronic thermostat

Depending on the piping layout, straight or angular VHS versions are used, and depending on the connection to the radiator, the G 1/2” or G 3/4” version is used.

Corner VHS Headset

Direct VHS headset

b) Radiator with bottom connection with built-in thermostat valve with clip connection RA

In this case, use a gas-filled bellows thermostatic element RA2994 or a living eco electronic thermostat. As shut-off valve valve RLV-KD can be used. Depending on the piping layout, straight or angular versions RLV-KD are used, and depending on the connection to the radiator, version G 3/4” or with adapters G 1/2”.

Straight shut-off valve RLV-KD with adapters G 1/2”

Angle shut-off valve RLV-KD with adapters G 1/2”

c) Radiator with bottom connection with built-in thermostat valve with threaded connection M30x1.5

In this case, use a RAW-K thermostatic element or a living eco electronic thermostat with adapter K. The RLV-KD valve can be used as a shut-off valve. Depending on the piping layout, straight or angular versions RLV-KD are used, and depending on the connection to the radiator, version G 3/4” or with adapters G 1/2”.

RAW-K

living eco

3. Underfloor heating

Warm floors provide special comfort in the room. With sufficient insulation, a warm floor can provide compensation for heat loss, but in practice, as a rule, a warm floor system is installed in addition to radiator heating.

Radiators and heated floors require different coolant temperatures. The classic parameters for radiators are 80 C at supply and 60 C at return. For comfortable and safe living, the average temperature of the floor surface should not be higher than +26 C for rooms with constant occupancy of people; this value is regulated by the Code of Rules SP60.13330.2012 (updated edition of SNiP 41-01). To achieve such a floor surface temperature, the temperature of the supplied coolant must be about 40 C. In order for the floor surface temperature to be uniform, the temperature of the returned coolant must differ from the supply temperature by no more than 5...10 C. To obtain such parameters of the heated floor coolant, mixing units are used.

A room thermostat can replace a thermostat for water heated floors, since it is capable of simultaneously controlling both radiators and an in-floor convector.
Thanks to a single control center, more precise room temperature control is achieved, energy consumption is reduced and maximum comfort is achieved.

Elegant Scandinavian room design Danfoss thermostats- modern and high-quality solutions for controlling the temperature in each room.

By choosing a wireless room thermostat, you don’t have to think about the need to lay cables when remodeling. You can also easily upgrade your existing heating system.

-1°С = 10%
Room thermostats provide not only comfortable temperature in each individual room, but also saves on heating. By lowering the temperature by just 1°C, you achieve savings of up to 10%.

Using a programmable room thermostat, you can adjust the operation of your heating equipment depending on the time of day and day of the week. For example, turn on energy-saving mode when you are at work or away.

STC Energoservice supplies and installs the full range of Danfoss thermal automatics. Thermal automation We are actively implementing Danfoss as part of the implementation of energy contracts and the introduction of energy-saving measures.

The STC Energoservice company offers you the supply and installation of balancing valves MSV-C, balancing valves MSV-F2, balancing valves MSV-M, differential pressure regulators AVP, AVD, AVA, temperature controllers, heat exchange equipment

Control devices for heating and ventilation systems. Control devices for district heating and central systems heating: temperature and pressure regulators direct action; electronic devices for maintaining water temperature in heating systems depending on the outside air temperature; electronic regulators for ventilation and air conditioning systems.

Automatic means of regulating indoor air temperature for various purposes. Direct-acting radiator thermostats and programmable electronic room thermostats complete with control valves and thermoelectric actuators.

The industry faces one of the most important, if not the most important, challenges: ensuring continued economic growth while protecting environment from predatory exploitation of raw materials and pollution. Danfoss plays an important role in this process. The company's products save energy and increase productivity industrial enterprises and improve living standards in all parts of the world.

Danfoss is a world leader in the production of a full range of equipment for heating, ventilation and automation systems for individual and central heating points. Danfoss automation has been installed and successfully operated in more than 10 thousand central heating stations and industrial substations and in more than 50 thousand public and residential facilities in Russia.

The STC Energoservice company is ready to offer you the entire product range of Danfoss thermal automatics:

thermostatic elements of the RA series; Danfoss is the only manufacturer radiator thermostats with gas-filled sensors.

radiator thermostat valves - for two-pipe pumping system heating type RTD-N and type RTD-G for single-pipe or double-pipe pump gravitational system heating;

hydraulic balancing valves- automatic balancing valves ASV - used to maintain a constant pressure difference between the supply and return pipelines at variable flow rates of the medium passing through them in the range from 0 to 100% (ASV-I, ASV-M, ASV-P, ASV-PV) manual MSV - these are valve-type devices with a fixed position of its adjustment to the required throughput (MSV-BD, MSV-S, MSV-F2, USV-I), combined valves AB - QM are flow stabilizers;

controllers and dispatching - electronic controllers with weather compensation of coolant temperature of the ECLComfort 110, 210, 310 series are used in systems district heating, heating and cooling of buildings. Supports up to 4 systems, control functions are programmed in the key;

valves with electric drives: Seat/Control valves for district heating VS 2, VM2, VB 2, VF 2 / VF 3, VFG 2/21, VFG 33/34/35/36, as well as a series of control valves with electric drives for heating and cooling, in which as working environment water or glycol solution is used - RAV, VMT, VMA, VGU, VGUF, VFU 2/21, VF 2 / VF 3, VMV, VRB 3, VRG 3;

A complete line of electric globe valve actuators to meet the requirements of any system, any type of facility. Actuators can be controlled by 3-position or analog signal, with or without safety function, and also of different prices, AMV(E) and ABV series;

flow and pressure regulators - To solve various technological problems in relation to heating systems and heat supply of buildings, Danfoss produces a wide range of direct-acting regulators, including:

Differential pressure regulators - AVP / AVP-F, AFP

flow regulators and limiters - AVPB / AVPB-F, AVPQ / AVPQ-F, AVPQ 4, AFPQ / AFPQ 4

differential pressure regulators with flow limitation - AVQ, AFQ

To equip centralized heating systems and heating points, Danfoss direct-acting temperature controllers are used for operation in heating or hot water supply circuits. Various combinations of temperature controllers are possible, including with safety thermostats.

* When purchasing Danfoss equipment (thermal mechanics), Grundfos pumps, RIDAN and Alfa Laval heat exchangers, you can pick up the goods by pick-up from the pick-up points of our partners - the logistics company Logitera in the cities: Moscow, St. Petersburg, Novosibirsk, Yekaterinburg, Samara, Krasnodar, Kazan, Irkutsk, Nizhny Novgorod, Rostov-on-Don, Khabarovsk, Voronezh, Yaroslavl, Volgograd, Vladivostok, Krasnoyarsk, Tyumen, Murmansk, Chelyabinsk, Perm, Omsk, Surgut, Saratov, Ufa, Orenburg, Pyatigorsk, Naberezhnye Chelny.

Danfoss accessories catalog – always big choice

The well-known company Danfoss, whose equipment catalog you can see on our website, was created about 80 years ago. Today it is modern enterprise, one of the main manufacturers in its industry.

The company has representative offices in more than one hundred countries around the world, and also unites many organizations on four continents.

The international concern is not only a leading manufacturer, but also a supplier of station equipment for heat supply systems around the world, in particular in Russia.

Reliable equipment and modern technologies allow engineers to use effective solutions when problems arise in the automation of thermal installations.

Among the main directions of the Danfoss company are:

• thermal and industrial automation;
• refrigeration equipment;
• drive technology;

All designs and each component are individually checked and undergo strict quality and reliability control. This becomes possible thanks to the large number of factories owned by the company.

In our store, the price for Danfoss parts is one of the lowest, since we work directly with the manufacturer and are committed to long-term work with clients; accordingly, we create favorable purchasing conditions for customers.

Thermal automation

The catalog of thermal automation in the enterprise is quite wide and includes heating, air conditioning and ventilation stations. Among them we can highlight:

• thermostatic components;
• radiator thermostat valves;
• differential pressure regulators;
• controllers and dispatching;
• valves with electric drives;
• flow and pressure regulators;
• valves with electric drives;
• heat exchangers;
• room thermostats;
• burner components.

In the HitEnergy online store you can buy Danfoss valves at an affordable price and excellent quality. These parts are durable and reliable.

Industrial automation

This line manufactures and sells parts for control and monitoring systems in industry and the marine industry. The section includes the following components:

• pressure transducers;
• thermostatic, electromagnetic and pneumatic valves;
• pressure and temperature switch;
• electromechanical, electronic contactors and motor controllers;
• temperature sensors and converters.

The device is in great demand soft start, andDanfoss converter. The company is the undisputed leader in the production and sales of these products.

Drive technology

The direction of power electronics consists of three sections: Danfoss Drives, Danfoss Solar Inverters, Danfoss Silicon Powers . Components are used in many fields, such as: automotive, food, paper, chemical, metallurgical. In particular, they apply:

• soft starters up to 800 kW;
• power frequency converters up to 1400 kW;
• Various optional accessories.

Group Drive Technology Division Danfoss is considered one of the largest leaders that not only develops and produces, but supplies and services mechanical and electronic parts for industry.

Refrigeration equipment

The company is also successfully engaged in the production of compressors and integrated solutions for the automation of refrigeration stations and air conditioning systems. The catalog contains a large selection of components for the production of household and industrial refrigerators, air conditioning and ventilation systems. This assortment is presented:

• electronically controlled thermostatic valves;
• electromagnet coils;
• pressure and thermostat switch;
• industrial refrigeration management solution;
• filter dryers;
• sight glasses;
• shut-off and control valves;
• check valves;
• liquid distributors;
• linear components of commercial refrigeration units;
• oil separators;
• mesh filters;
• compressors and compressor-condensing devices;
• gas detectors.

Today, Danfoss is actively developing and operating in Russia. This is due to a wide range of products, since factories produce everything necessary for reliable and professional installation pipelines, from plumbing fixtures to differential pressure regulators.

A distinctive feature of any detail Danfoss is reliability and strength, with correct use its service life is quite long. The company values ​​​​its reputation as a reliable manufacturer, so all products are made from modern, reliable, wear-resistant materials.

It should be noted that the group Danfoss is a shareholder Sauer - Danfoss , which is currently considered the world's leading manufacturer of mobile hydraulics.

The company achieves its goals, but at the same time tries to minimize Negative influence of their production on the environment, as well as to make maximum use of natural resources.

All products are characterized by ease of use and high performance, which is why they are in great demand among consumers. Thanks to the use automatic systems from Danfoss you can achieve stable operation of engineering systems

Danfoss A/S is an international industrial concern with headquarters in Norborg, Denmark. Danfoss is a recognized world leader in the production of thermal automation, refrigeration components and drive technology. Technical solutions companies are based on the latest scientific developments and always contribute to increased energy efficiency and rational use resources.

The company was founded in 1933 by Mads Clausen as Dansk Koleautomatik- og Apparat-Fabrik, and after some time was renamed Danfoss. Currently, Danfoss unites dozens of enterprises on four continents, and also has sales offices and subsidiaries in more than 100 countries.

In Russia, Danfoss was founded in 1993 jointly by the international concern Danfoss and the Danish Investment Fund for Central and of Eastern Europe. In November 1993, in Moscow, for the first time in Russia, full-scale production of radiator thermostats was organized using technology from the Danfoss concern, which is a world leader in the production of such devices. Production is certified in accordance with European standards CEN 215 and ISO 9001.

In 2001-2002, Danfoss launched production lines in Moscow for control seat valves, as well as ball shut-off valves wide application in heat supply systems, heating, water supply, as well as industrial installations.

In 2007 Danfoss opens a new office building and a plant in the Moscow region, fully meeting the growth rates and needs of the company itself.

Main directions Danfoss(Danfoss) are:

• Thermal automation;
• Drive technology;
• Industrial automation;
• Refrigeration equipment.

Thermal automation Danfoss

Danfoss Thermal Automation Division produces and sells equipment for heat supply, ventilation and air conditioning systems:

• Radiator thermostats and radiator shut-off valves
• Balancing valves for heating and cooling systems
• Electrical automation equipment for heating points and central ventilation units
• Direct acting temperature and pressure regulators
• Plate heat exchangers
• Electrical heating controls for cottages
• Device for automation of underfloor heating systems
• Heat consumption metering tools
• Pipe fittings
• Block heating points
• Burner components

Industrial automation Danfoss

Danfoss's Industrial Automation Division produces and markets components for control and monitoring systems in the industrial and marine sectors. The wide range of Danfoss products includes:

• Solenoid valves
• Pneumatic valves
• Thermostatic valves
• Electromechanical contactors
• Electronic contactors and motor controllers
• Pressure and temperature switch
• Pressure transducers
• Temperature sensors and transducers

Danfoss drive technology

The Danfoss Drive Technology division is one of the largest industrial groups in Denmark and is a global leader in the development, production, supply and service of mechanical and electronic components for industry. The power electronics business includes three divisions: Danfoss Drives, Danfoss Solar Inverters, Danfoss Silicon Powers.

Danfoss produces a wide range of products that are widely used in such industries as water supply, heating, ventilation, chemical, automotive, paper, food, mining, metallurgical industries:

• Frequency converters with power up to 1400 kW
• Soft starters up to 800 kW
• Various optional accessories

Danfoss refrigeration equipment

The Danfoss Refrigeration Division is a leading manufacturer and supplier of compressors and complete automation solutions for refrigeration and air conditioning systems. A wide range of refrigeration products for production household refrigerators, commercial and industrial refrigeration units, as well as ventilation and air conditioning systems:

• Thermostatic valves
• Solenoid valves and coils
• Pressure switches and thermostats (thermostats)
• Pressure regulators
• Water control valves
• Commercial Refrigeration Components
• Industrial refrigeration components
• Gas detectors
• Electronic regulators
• Temperature and pressure sensors
• Compressors
• Compressor and condensing units

Due to the fact that Danfoss has a large number of its own factories, the quality of its products is subject to the strictest control. Designed for use in the most various systems Danfoss components meet stringent requirements for precision and reliability.