Danfoss radiator thermostats. Danfoss thermostat: principle of operation, instructions, reviews Customer reviews on choosing a thermostat

A popular brand under which thermostats are produced is Danfoss. Products from this company can be found in almost all stores.

Find out the price and buy heating equipment and related products you can with us. Write, call and come to one of the stores in your city. Delivery throughout the Russian Federation and CIS countries.

The production technology based on a gas-filled bellows has a patent and is used at the company’s own factories. If you are inclined to buy a Danfoss thermostat, be sure to read the operating instructions.

About Danfoss regulators

Why install a thermostat? To maintain a certain indoor air temperature.

The product consists of two parts that complement each other:

1. Thermostat.
2. Thermostatic valve.

The Danfoss thermostat valve is connected directly to the radiator, and a thermostat is already mounted on it.

The main thing is the thermostatic element, which captures temperature changes and sends a signal to the valve that blocks the flow of coolant.

Inside the thermal head is a bellows (a corrugated chamber that can change sizes) with gas. At a certain temperature, a gas changes its state (it condenses when cooled). This affects the change in volume and pressure in the chamber, which becomes smaller in size and pulls the spool rod, which in turn opens a gap in the valve for the circulation of the coolant.

When heating occurs, the reverse expansion process starts and the lumen is closed (the standard is considered to be 2 V °C of temperature exceeding the specified value).

When the optimal degree is set on the instrument scale, a certain compression of the tuning spring appears inside, which is associated with a specific gas pressure.

Danfoss produces gas and liquid bellows (more inert, slower to react to temperature fluctuations).

Types and symbols

The abbreviations by which Danfoss heating thermostats are distinguished indicate the type of filler and the purpose of the device:

• RTS is a liquid bellows;
• RTD-G – gas-powered, suitable for one- and two-pipe systems without a pump;
• RTD-N is a gas device for one- and two-pipe pump systems.

Danfoss RTR/RTD thermostatic service element with built-in temperature sensor

There are modifications that perform not only their main functions, but also many additional ones. Let's say there is an option to protect against reconfiguration of set indicators. This is convenient when children are constantly in the room. The number of modes and variety of functions in each model is individual.

Popular models of Danfoss thermostats

The company's product range includes many different Danfoss thermostats for batteries. The following are popular:

1. RTD regulator marked 3640. It is used on 2-pipe classical type heating systems. Equipped with an option that prevents the line from freezing in cool weather. The Danfoss RTD thermostat is used in household and industrial conditions, has four divisions with marks in the form of Roman numerals.
2. The designation RAX, as a rule, is for products with liquid that are used for installation on unusual batteries or on heated towel rails. Externally they are very attractive and fit well into the design. The case has only divisions with Roman and Arabic numerals.
3. The Danfoss RA-299 thermostat operates on gas, has automatic temperature control, and is produced in different colors. Reacts quickly to temperature fluctuations. Only used for installation on classical systems heating.
4. The Living ECO device has the option of indoor climate control. It can be safely installed in various administrative buildings And residential buildings. The product is distinguished by the presence of an LCD screen, which displays all the necessary data about the thermal fluid. In addition, the case has main buttons for mode settings.
5. There are also series with many functions; they are suitable for heated towel rails and for different areas of heating equipment. Can be right- or left-handed.

Danfoss Living Connect thermostat

All Danfoss thermostats for heating radiators are supplied with parts that simplify the installation of the device and its future use.

Installation of Danfoss thermal head

The device is mounted precisely on the pipe of the hot water supply circuit. Installation does not involve anything complicated, even in the case of design options, installation follows the same principle. The work is carried out in stages:

1. Markings are made on the supply pipe to indicate the area that needs to be cut. It is worth considering the dimensions of the valve body. The threaded element is removed, which will fit directly into the pipe.
2. The heating is turned off and the liquid is drained to prevent a flood in the house.
3. Cuts according to marks extra area pipes, and on the outer part of the cut a thread is made with a die.
4. The joint is treated with a special paste for plumbing work(manufacturer is not important).
5. The valve is screwed onto the thread made with a die and tightened tightly with a washer. There is no need to further secure the connection for tightness. The actions performed are sufficient for a reliable connection.
6. The fuse is removed, the maximum value of “five” is set on the regulator, and a housing with a scale is put on top.
7. All joints are checked and the heating device is connected to the entire heating system.

If the Danfoss thermostat was connected correctly, then there should be no problems. It is worth checking the operation of the device before opening and closing the valve for the first time.

Setting up the thermostat

All the manufacturer’s devices differ in appearance and technical characteristics, but they are still configured in the same way. To implement it, you need to look at the operating instructions and familiarize yourself with the designation of the modes that are indicated on the device body. Indicators may vary, depending on the model.

Next, to adjust the Danfoss thermostat, set it to the required temperature. This can be done by moving the torque element in a certain direction. If you have installed a device with buttons, all you need to do is press the plus or minus.

It is possible to specify intermediate values ​​when they are best suited to create a particular temperature regime in room. A couple of minutes will pass, and the heating system will have time to adapt to the specified parameters and will heat until the optimal microclimate is achieved. The same applies to refrigeration equipment.

Operation of the regulator in a heated floor system

The Danfoss heated floor thermostat is an important thing for the entire heating system. The device has the responsible function of adjusting the temperature to a comfortable 25 °C.

Flow meters will not help if the pressure is unstable, the air is heated, for example, by the sun's rays, and residents are trying to save on heating while they are not at home.

Experts advise installing a mechanical regulator in small rooms of approximately 10 m².

In large rooms, Danfoss room thermostats with heated floor temperature sensors are used.

The Danfoss thermostatic head deservedly has many positive reviews. This is an easy-to-use element that does not require special attention from the owner after installation and adjustment. As a result, a favorable microclimate is provided in the house, and in some cases, significant savings in money.

Advantages of our products

Save up to 46% energy

Radiator thermostats allow you to spend exactly the amount of energy that is needed at the moment to maintain a comfortable temperature in the room. Different thermostatic elements cope with this task in different ways. Compared to a manual control valve, liquid or paraffin filled thermostats save 31%, and gas filled thermostats save 36%. Using Danfoss living eco electronic radiator thermostats allows you to save up to 46% of heating energy.

*According to a study conducted by the Rhine-Westphalian University of Technology,
Aachen, Germany.

Fast reaction

Danfoss RA series thermostats are equipped with a gas-filled bellows. The heat capacity of gas is significantly less than that of liquid and, especially, paraffin. As a result, gas-filled thermostats respond much faster to changes in room temperature. Therefore, Danfoss thermostats maintain temperature with greater accuracy and provide greater energy savings. Radiator thermostats with a gas-filled thermostatic element (“gas”) are patented and manufactured only by Danfoss.

Easy installation and setup

A set of adapters will allow you to install Danfoss thermostat living eco for the most part thermostatic valves present on the market. See for yourself by watching this short video.

Reliable performance

Danfoss thermostats are fully adapted for operation in Russian conditions. More than 40 years of experience in operating thermostats in Russia allows us to confirm this. For the first time in Moscow, Danfoss thermostats were installed in 1964 at the Rossiya Hotel, where they served until its demolition

Safety of thermal heads for heating radiators

In thermal heads for radiators heating Danfoss living eco has a child lock function. Exploring the world around us will be safe even for the little ones.

Comfort in all rooms

The amount of heat each room needs varies throughout the day. In the morning the sun shines through the windows on the east side of the house, at noon on the south, and in the evening on the west. If you control the heating of the entire house based on the temperature in one room, the temperature in the remaining rooms will change throughout the day.

Now you can buy a thermostat with a modern design

Red Dot is a world-famous “quality mark” in the field of industrial design. Only products that are exceptional in terms of aesthetics and functionality are awarded this high rating. In 2010, Danfoss was awarded the Red Dot award for the development of its living thermostats.

In many countries, up to 40% of energy resources are spent on the needs of ventilation and heating of buildings. This is several times more compared to advanced European countries.

Need for use

The issue of energy saving is especially acute; this is relevant against the backdrop of a constant increase in energy prices. One of the devices that allows you to save thermal energy, is a thermostat for radiators; its installation reduces heat consumption by 20%. To do this, the consumer needs to choose the right design for the heating system, as well as carry out installation, you can find out about this by reading below.

Principle of operation

The Danfoss thermostat is designed to maintain a constant indoor temperature. Such devices were first used back in 1943. The mentioned company is a market leader in the production and sale of such units. Structurally, the devices consist of 2 main elements, namely a thermal head and a valve, which are connected by a locking mechanism. The purpose of the thermal head is to determine the temperature environment In order to regulate the impact on the actuator, the latter acts as a valve. It is designed to cover the flow of water that enters the radiator. This method of regulation is called quantitative, since the device can affect the flow of water that passes into the battery. There is another method, called qualitative, with its help the temperature of the water changes in the system. This is done through a temperature controller, namely a mixing unit. This element must be located in the heating point or boiler room. The Danfoss thermostat has a bellows inside, which is filled with a heat-sensitive medium. It can be gas or liquid. The latter type of bellows is easier to manufacture, but does not operate as quickly as its gas counterparts, which is why the latter have become so widespread. When the air temperature level increases, the substance that is in a confined space acquires a more impressive volume; the bellows, stretching, affects the valve stem. The latter is moved downwards by a cone, which is designed to reduce the flow area. This allows you to effectively reduce water consumption. When the air temperature drops, this process occurs in the reverse order, and the volume of coolant increases to the optimal limit, which is how the Danfoss thermostat works.

Consumer Reviews

Depending on what type of heating system is used, as well as what the installation technology is, thermal heads and valves can be used to control the flow of water different combinations. If we are talking about a single-pipe system, then a valve should be used, which is characterized by increased throughput and low hydraulic resistance. According to users, the same recommendation can be used in the case of a two-pipe gravity system, where water circulates naturally and is not influenced by force. If you decide to choose a Danfoss thermostat, you can install it on a two-pipe system that is equipped with a circulation pump. Moreover, according to reviews, the valve should be able to adjust the capacity. This adjustment is quite simple, and there is no need to use a special tool for this. Once you have decided which valve to use, you should decide on the type of thermal head.

If you are interested in a Danfoss thermostat, the installation instructions for which will be presented below, you can purchase it at an affordable price. When determining the type of thermal head, you should know that it is offered for sale in some varieties. Thus, there may be a thermocouple inside. Among other things, the temperature sensor can be remote. Sometimes the regulator is external. Devices can also be programmable, in which case they are electronic. You can also choose a vandal-proof thermal head. According to users who have chosen a regulator with an internal sensor, this device should be installed only if it is possible to position it horizontally. Then the air in the room will flow freely to the body of the device.

For reference

After you have purchased radiator thermostat Danfoss, it is worth familiarizing yourself with the features of its installation in more detail. Thus, it is completely unacceptable to install it on a radiator in a vertical position. In this case, the heat flow will constantly rise upward, and increased temperatures from the supply pipeline and housing will affect the bellows. Ultimately, you will encounter the device not working correctly.

Customer reviews on choosing a thermostat

Home craftsmen especially emphasize that in some cases it is not possible to install the device horizontally. Then it is recommended to buy remote sensor temperature, which comes complete with the capillary tube. The length of the device is 2 meters. It is recommended to place the device at this distance from the battery by installing it on the wall. Buyers emphasize that the inability to install the regulator horizontally does not always indicate the need to purchase a remote sensor. There may be other objective reasons for this. The Danfoss thermostat, the operating principle of which was described above, cannot be installed behind thick curtains; in this case, of course, the best solution would be to purchase a remote sensor. Among other things, such a need arises when there is a heat source near the thermal head or hot water supply pipes pass. You can resort to this solution even when the radiator is located under a sufficiently wide window sill. In this case, the thermoelement may fall into the draft zone. Buyers claim that if at least one of the above conditions is met, then it is best to purchase a remote sensor.

Installation instructions

The Danfoss thermostat, reviews of which are presented in the article, must be installed using a certain technology. The first recommendation is to avoid installing the thermal head on the heater within sight. Batteries whose total power is equal to 50 percent or more of all that are in the same room should be regulated. Thus, when there are two heating devices in the room, the thermostat should be on one battery, whose power is more impressive. If you are interested in Danfoss - a thermostat, the setup of which is quite simple, you can purchase and install it. The first part of the device, which acts as a valve, should be installed on the supply pipeline. If it needs to be embedded into an already assembled system, the supply line must be removed. This work may involve some difficulties if the connection is made using steel pipes. The master will have to stock up on tools for cutting the material.

Conclusion

A fairly popular company today in the market for relevant products is Danfoss company. The thermostat (how to regulate it is indicated in the instructions) must be installed on the radiator. The thermal head is then mounted without using additional tool. This is very easy to do at home, in addition, you will be able to save on purchasing consumables.

fb.ru

Danfoss thermostat - operating instructions

Installing a thermostat on a radiator is an opportunity to reduce heating costs, improve the microclimate in the house, and also carefully use the earth's energy resources.

The motives may be different, but the decision is being implemented more and more often.

Many people, when choosing an equipment manufacturer, choose Danfoss.

And not surprisingly, products from a well-known brand can easily be found on the shelves of many stores.

The production technology of their thermostats based on a gas-filled bellows is patented and used in the company’s own factories. If you also decide to purchase a Danfoss thermostat, the installation and operating instructions will come in handy.

The purpose of installing a thermostat is to maintain the air temperature in the house chosen by the consumer.

The design of a thermostat for radiators includes two elements that complement each other:

1. Thermostat (or thermostatic element).
2. Danfoss thermostat valve.

The valve is connected directly to the battery, and a thermostatic element is installed on it.

The heart of the matter is the thermostat. He is the one who reacts to change ambient temperature and affects the valve that blocks the flow of coolant.

Danfoss thermostat

Inside the thermostat head is a bellows (a corrugated chamber capable of changing dimensions) filled with gas. Gas, depending on temperature, changes its state of aggregation(when cooled it condenses). This leads to a change in volume and pressure in the chamber. The chamber decreases in size and pulls the spool rod with it, which opens a larger gap in the valve for the flow of coolant.

When heated, a reverse process of expansion and closure of the lumen occurs (the accepted standard is 2 V°C of air temperature exceeding the set one).

When a comfortable temperature is set on the regulator scale, a certain compression of the tuning spring is established inside, which is interconnected with a certain gas pressure.

Danfoss produces bellows with gas inside, as well as liquid ones. The latter are more inert and react more slowly to temperature changes.

Types and symbols:

• RTS - liquid bellows;
• RTD-G - gas bellows for a one-pipe system, or two-pipe without a pump;
• RTD-N - gas bellows for two-pipe systems and systems with a circulation pump.

Radiator thermostat DANFOSS RA 2991

There are also modifications of thermoelements in which:

• Protection is provided against reconfiguration by random persons (an excellent option for public institutions and children's rooms).
• There is an external temperature sensor connected by a two-meter capillary tube, which can be installed away from the radiator, buried in a niche or filled with furniture, which gives a more accurate measurement result.
• With a temperature range slightly smaller than that of conventional sensors, for integration into the system where payments are made according to standards.

Floor heating system

Thermostats are also used for underfloor heating systems. A thermostat for heated floors is a must!

After all, when driving liquid into the floor contour, you need to lower its temperature from 60 - 90 V°C to a comfortable 35 - 40 V°C (in this case, the surface of the floor itself will be about 25 V°C).

Flow meters are powerless if the pressure in the system fluctuates, if the air is heated, for example, from the sun, and even if residents want to save on heating while they are away.

The thermomechanical regulator is best used for small rooms, about 10 m2.

For large areas, room thermostats with heated floor temperature sensors are used.

First of all, the valve is mounted on the radiator. To do this, the coolant supply is shut off.

1. Markings are made on the supply pipe. The area that will need to be cut must correspond in length to the size of the valve body minus threaded connections.
2. The heating pipe is cut and the extra section is cut out.
3. Using a die, or die, a thread is made on the outside of the cut pipe.
4. The connection is treated with plumbing paste and fum tape.
5. The valve body is screwed onto the resulting thread.
6. Since the pipe cannot be twisted, an American union nut is twisted on the opposite side of the valve, and then screwed (with a hex wrench) into the radiator hose.
7. The body of the device is screwed into its own union nut through a rubber washer. This connection does not need to be sealed in any way, the main thing is that it is clean.
8. After the valve is installed on the radiator, the protective cap is removed from it (located perpendicular to the pipe).

The thermal head is set to the maximum temperature value, after which it is pressed onto the valve (until it clicks).

Sensor installation

As already mentioned, a remote sensor is needed if the battery is built into the wall or covered by something (furniture, screen, thick curtains).

A sensor and a setting unit are combined in one housing of this element.

1. It is best to place the device on an open (but without drafts) section of the wall, at a height of about 1.4 m from the floor. You need to avoid places near devices that can greatly change the temperature of the environment - air conditioners, kitchen stoves etc.
2. The device comes with a small mounting panel, which is secured to the selected location using a pair of self-tapping screws.
3. A capillary tube is wound inside the sensor. It is pulled out to the required length so that the device reaches the fixed bar.
4. The capillary tube is carefully fixed on back side valve
5. The sensor is placed on the bar by simply snapping it into place.

Setting a limit

The operation of thermostats is based on physical laws. Therefore, you need to remember that the conditions in which the device is located may make some adjustments (for example, distance from the heat source). There are indicative tables of correspondence between the regulator scale and temperature, which can be taken as a guide during installation. However, after the basic setup, you will need to “understand” your thermostat.

For this:

1. Set the temperature on the handle with marks.
2. After an hour, control measurements are taken with a room thermometer at several points in the room.
3. If the temperature is higher or lower, the readings on the handle are adjusted.

Proportional band - 2 °C. If you set the temperature to 20°, the device will maintain readings in the range from 20 to 22 °C.

Sensor after installation on the radiator

The two pins that are included with the sensor will help set the limits for the minimum and maximum positions of the thermoelement.

They are located at the bottom of the device:

1. To set the limit at a mark, for example “3”, you need to pull out the limiter and set the sensor readings at the mark “3”. Then the pin is inserted into the hole, which in this position is under the diamond icon.
2. The second limiting threshold is set in the same way. The handle is turned to the desired value, only the pin is inserted into the hole located under the triangle icon.

You can block the regulator at a certain temperature (protects against accidental failure or childish pranks).

For this:

1. Both pins are removed.
2. The handle is placed at the desired level.
3. In this position, the first pin is inserted into the hole located under the diamond.
4. The second pin goes into the hole under the triangle.

Danfoss thermostats have many positive reviews. This is a very easy to use device that does not require any attention after initial installation and configuration. But the result will be a more comfortable temperature in the apartment, and in some cases, significant budget savings.

Video on the topic

No comments yet

microclimat.pro

Selection of thermostats for heating radiators

Thermostats installed on heating radiators can increase indoor comfort, as well as significantly save on heating costs when it comes to a private home.

There are several types of devices on the market: electronic, mechanical, gas-filled, liquid, and also with remote or built-in temperature sensors. Our material is devoted to how to select and install thermostats, what you should pay attention to first.

Types of control elements

Electronic automatic thermostat Danfoss

Installing a shut-off and control valve or valve in front of the heating radiator is a measure that serves not only to regulate the flow of water into the battery, but also a question emergency safety, since it becomes possible to disconnect the battery from the common riser, if necessary. Such a simple and important function was not always provided for in heating systems before; by the way, not all new houses have battery-operated shut-off valves installed.

The following are used as locking and regulating elements:

1. ball valve,
2. cone valve,
3. automatic thermostat.

Ball valve

This is the most minimal measure aimed at creating the opportunity emergency shutdown radiators. This element performs only a locking function, since the design provides only two positions - “open” or “closed”.

Adjust the battery heating using ball valve– ineffective practice, since a valve in the middle position is vulnerable to the damaging effects of solid particles. The coolant circulating in the system contains suspensions, rust particles and other foreign substances small elements(this is especially true for heating systems apartment buildings).

Gradually, the surface of the faucet will deteriorate, jagged marks will remain on the shut-off ball, which means that sooner or later it will become unsuitable for performing its main function - locking, since the tightness will be broken.

Cone valve

Allows you to regulate the flow of coolant into the radiator, so you can use it to regulate the temperature. In general, installing a manual cone valve in front of batteries is inexpensive and functional solution.

The disadvantage in this case will be the complete absence of any markings for adjustment; you will have to independently determine how much to change the position of the valve, do not forget to return it to its original position, etc.

Thermostats with thermostat

The most modern and comfortable solution– installation of a thermostat with a thermostat in front of the radiator, which allows you to accurately regulate the degree of heating of the battery, and therefore the air temperature in the room.

Types of thermostats

Today, two types of thermostats are used:

1. Liquid
2. Gas-filled

Thermostat design

The device and main components of the thermostat

The radiator thermostat has two parts:

1. Valve
2. Thermostatic element

The thermostatic element is a hollow cylinder, the walls of which are corrugated, this cylinder is called a bellows. The bellows is filled with a substance (water or gas) that can react to fluctuations in air temperature in the room.

When the temperature rises, the volume of the working substance increases, pressing on the walls of the bellows. The bellows moves the rod, which closes the valve. The valve controls the amount of coolant entering the battery. When the valve stem moves, the flow of coolant decreases.

Types and design of decorative screens and grilles for batteries, detailed review

Connecting radiators - detailed diagrams And practical recommendations

The photo shows types of thermostats

If the air temperature in the room decreases, then the volume of the working substance decreases; it no longer stretches the bellows, thereby opening the valve and increasing the flow of coolant.

Bellows have a large margin of safety and service life; they can withstand hundreds of thousands of compression cycles for decades. (Danfoss cites data that their bellows can last up to 100 years, having completed 1 million cycles).

Gas-filled thermostats

Gas-filled thermostats are manufactured by the Danish company Danfoss; they are reliable equipment that has a service life of over 20 years. The bellows system of the gas-filled thermostatic element, as indicated above, is filled with gas, this allows you to smoothly regulate the air temperature in the room.

The sensor detects the ambient air temperature. Each temperature corresponds to a certain level of gas pressure in the bellows, which is balanced by compression of the adjusting spring.

As the room temperature rises, the gas pressure in the bellows increases and the valve cone moves towards closing. This the process is underway until equilibrium is restored between the gas pressure in the bellows and the compression of the spring. When the air temperature in the room drops, the gas pressure decreases, as a result of which the bellows compresses and the valve cone moves towards opening until the system reaches equilibrium.

Danfoss devices

Examples of Danfoss automatic thermostat models

Temperature regulators of the RTD series from Danfoss are gas-filled devices.

This technical design gives two serious advantages at once:

1. The gas condenses in the cold half of the sensor, which is further away from the control valve. In this case, the radiator thermostat will always detect temperature fluctuations in the room, and the influence of the water temperature in the pipe will be eliminated.
2. The thermostat is very sensitive and is able to respond extremely quickly to temperature changes, so it controls the flow of heat into the room as efficiently as possible.

Danfoss produces two types of thermostats for radiators:

In addition, they can be straight or angular.

The type of regulator is selected based on the type of heating system in the house, and the valve size is selected based on the diameter of the pipe supplying the coolant or the diameter of the hole in the plug heating device.

Valves type RTD-G in thermostats use:

• For single-pipe heating systems;
• For two-pipe heating systems in apartment buildings;
• For two-pipe systems, without installation circulation pumps, in cottages.

RTD-N type valves in thermostats are used:

• For two-pipe heating systems in new buildings;
• For two-pipe heating systems of cottages in which circulation pumps are installed.

Average prices for Danfoss thermostats (Danfoss)

The table shows the average prices at which you can currently buy thermostats for Danfoss heating radiators (Denmark).

Shown is the model number and short technical description, the cost is indicated in rubles (may vary depending on the exchange rate).

Thermostat modelTech. Description Adjustment range, accuracy 1 degree. Price, rubles

RA 2994	With gas-filled built-in temperature sensor	5-26	1520
RA 2992	With gas-filled remote temperature sensor	5-26	2320
RA 2920	With gas-filled built-in temperature sensor and protective casing from unauthorized intervention	5-26	2240
RA 2922	With gas-filled remote temperature sensor and protective casing against unauthorized intervention	5-26	3200
RA 2940	With gas-filled built-in temperature sensor, with function floors	0-26	1600
RA 5062	Remote control, with liquid built-in temperature sensor (2 m)	8-28	4720
RA 5065	Remote control, with liquid built-in temperature sensor (5 m)	8-28	5080
RA 5068	Remote control, with liquid built-in temperature sensor (8 m)	8-28	6200
RA 5070	Remote control, with liquid built-in temperature sensor (10 m)	8-28	6240
RA 5072	Remote control, with liquid built-in temperature sensor (12 m)	8-28	6880
RA 5075	Remote control, with liquid built-in temperature sensor (15 m)	8-28	7920
RA 5074	Remote control, with liquid remote temperature sensor	8-28	6720
RAW 5010	With liquid built-in temperature sensor	8-28	1440
RAW 5012	With liquid remote temperature sensor	8-28	2000
RAW 5110	With liquid built-in temperature sensor, with shut-off function	0–28	1520
FTC	With liquid remote temperature sensor for regulating water temperature in underfloor heating systems	15–50	4960
RA-Plus	Programmable, with liquid built-in temperature sensor	8–28	8080
RAX white	With built-in liquid temperature sensor. Design version, white (RAL 9010)	8-28	2160
RAX black	With built-in liquid temperature sensor. Design version, black (RAL 9005)	8-28	2240
RAX chrome	With built-in liquid temperature sensor. Design version, chrome plated	8-28	2400
RAX steel	With built-in liquid temperature sensor. Design version, steel	8-28	3040

Regulator installation

The process of installing thermostats on a radiator in a house is not complicated; if you wish, you can do it yourself. If you have no experience or desire, you can always turn to professional installers.

Video instructions for installing a thermostat on a radiator using the Danfoss Living Eco automatic electronic regulator as an example:

The sequence of actions will be the same, regardless of the metal from which the batteries are made, the principle is the same for both aluminum and bimetallic radiators.

Removing the old collar

Installing a new collar

A new set of metal collar and blind nut must be installed on copper pipe, the old ones are dismantled. If the collar cannot be removed, then its parts are carefully cut out with a small screwdriver, after which they can be torn apart from each other. Since you will have to work directly with a screwdriver and a hacksaw on the pipes, you should remain careful.

After installation is complete, set the required temperature on the thermostat.

Typically, for living rooms or walk-through rooms, the regulator is left completely open; for bedrooms, you can close it halfway. If different rooms of the house have different thermostat settings, then you should keep the doors to the rooms closed, otherwise the device will incorrectly determine the air temperature in the room and try to equalize it.

Photo selection of decorative screens for radiators that fit stylistically into the interior

Calculation of the required power of radiators and the number of sections

Which one to choose: gas or liquid?

This question is perhaps one of the most frequently discussed among consumers and installers. Technically, gas-filled bellows respond faster to room temperature fluctuations. Wherein liquid instruments more accurate when transferring the internal pressure of the bellows to the moving mechanism.

Thus, it is difficult to answer unequivocally which bellows are better. When choosing, you should first focus on workmanship, warranties and service life. This means choosing from products from trusted manufacturers, technical solution however, it may be of secondary importance.

Advantages of Danfoss thermostatic controllers

• Danfoss thermostats for radiators have a number of advantages:
• The device body has a modern ergonomic design;
• High quality and concise appearance will allow them to fit into any interior;
• Thermostats can be installed on existing heating systems;
• Does not require prevention or maintenance;
• Not whimsical, can work in conditions of domestic heating systems;
• Has a long service life;
• Provide precise temperature control in rooms (6-26 degrees);

Benefits of installing thermostats

Electric thermostat for heating radiator

When installing thermostats on radiators in a private house or cottage, heating savings of up to 20% are achieved. This occurs by reducing the consumption of excess heat during periods when it is not needed - on warm and sunny days, when operating electrical appliances, etc.

The thermostat allows you to maintain a healthy microclimate in the premises, since the air does not overheat. This ensures comfort in the home, prevents wooden furniture from drying out and extends the life of sensitive equipment.

For some types of fuel used in private homes and cottages (for example, diesel fuel), the cost of installing thermostats will be compensated for one heating season.

Apartment owners are unlikely to be able to save money. But an important benefit will be a comfortable environment in the rooms.

Types of thermostatic elements

There are two types of thermostatic elements:

1. Thermostatic element with built-in sensor
2. Thermostatic element with remote sensor

Built-in temperature sensor

Remote temperature sensor

The built-in sensor requires free air circulation around it. This is necessary to prevent heat from the pipe. To avoid unwanted heating, the sensor is installed horizontally.

Remote sensor

• The remote temperature sensor is used in the following cases:
• If the radiator (and therefore the thermostat) is installed in a niche;
• If the regulator is located less than 10 cm from a wide window sill (more than 22 cm);
• With a radiator depth of more than 16 cm;
• If the axis of the thermostatic element is in a vertical position;
• If the radiator is covered with thick curtains.

In these and some other cases, a remote sensor should be installed, since the built-in one will not be able to work correctly.

The sensor must be installed perpendicular to the radiator body. Since in case parallel installation, his readings will be confused by the action warm air rising from the radiator.

Conclusion

When choosing radiators, thermostats and the heating system in general, you should contact specialists. It is preferable to deal with professional companies, since they are legally responsible for the quality of work performed and equipment sold.

Not small role The warranty period and warranty service also play a role.

Savings when using the services of private individuals are often insignificant based on the results of all work, and the cost of eliminating the consequences of an accident in the heating system can be very impressive.

Types and materials of heating radiators: which are better?

Decorative and heat-protective grilles and screens for radiators: photo gallery

domtechs.com

Thermal heads temperature controllers for Danfoss heating batteries

The heating system is one of the most important details any home. Unfortunately, it is precisely this that accounts for the greatest costs when paying utility bills, regardless of the installed autonomous or central heating. Get comfortable temperature Thermostats installed on each radiator battery help to significantly reduce the cost of paying bills for consumed thermal energy. A special effect can be obtained by installing temperature controllers for Danfoss heating batteries, capable of maintaining the required temperature in the room with an accuracy of 1 degree.

Operating principle and design

Danfoss thermostats are necessary to maintain room temperature. During operation, thermostats monitor changes in room temperature using built-in heat sensors. When the temperature drops, the thermal control system opens the coolant intake, increasing its volume and circulation inside the battery. After reaching the set temperature, the Danfoss thermostat reduces the coolant supply, thereby reducing the heating temperature and energy consumption in the heating device. The equipment consists of two main components:

1. Thermostatic element responsible for controlling the device.
2. Valves regulating the release of coolant to the radiator. Executing element.

A small corrugated cylinder is installed in the thermostatic element, filled with a liquid or gaseous component that reacts to the slightest change in air temperature. In some models, it is used as a thermostat metal plate made of heat-conducting material, but thermostats for Danfoss heating radiators with a gas-filled bellows are considered the most accurate. The temperature control system can be mechanical or electronic. Temperature controllers for Danfoss radiators with electronic tuning are equipped with a small display to display information about the entered program.

Differences between some models

Depending on the model, installed thermostats can be divided according to their operating principle and design features.

• Supported temperature ranges from 5 to 30℃.
• Temperature measurement sensor option - it can be built-in, remotely controlled and programmable.
• They differ in the type of installation - angular, straight, for lower or upper connection type.

The most popular are direct heat regulators on Danfoss battery, their design allows you to connect batteries with bottom, top and side connections. The only thing that needs to be taken into account is the length of the shut-off valve and select the length of the installation pipes accordingly. The possibility of implementing any type of connection is achieved thanks to the rod located along the axis of the shank. The model designation of such equipment is RTD-N UK. Wide range of possibilities installation of UK model valves allows them to be used in conjunction with Danfoss floor-mounted convectors. Corner thermostats are mounted directly on the radiator coolant intake point and require a minimum of additional installation work and do not take up extra space. Sensors such as RTD - N or RTD - G are marked depending on the model. The increased throughput makes it possible to use thermal valves in closed and open heating systems. Another type of temperature regulators for Danfoss heating radiators is the version built into the radiator. Such equipment is widely used in compact devices located in niches, close to the side surfaces. Often, built-in valves are equipped with remote thermostats.

Installation and configuration of the sensor

When installing automatic thermostats for Danfoss radiators, you should strictly follow the instructions. It is not recommended to place the regulator head behind bulky objects, behind curtains or inside niches. This will result in distorted measurements by obstructing the uniform flow of air around the sensor. If installing a thermal head for Danfoss radiators RTD 3640 or other similar models is not possible due to the hidden placement of the battery; you must take care of an external remote sensor.

Despite the possibility of installing thermostats in almost any heating system, using them together with cast iron batteries will not bring the expected results due to the slow cooling and slow heating of the battery.

Installation of the thermostat should only be carried out by professionals, in order to avoid further problems and malfunction. Temperature controllers for Danfoss heating batteries are adjusted once, at the beginning of each heating season. For correct settings, it is necessary to minimize the heat loss of the room, for which windows and doors are closed. Then a regular room thermometer is installed in the center and opened as much as possible stop valve thermostat. Once the temperature in the room becomes slightly higher than what you consider most comfortable for yourself, the valve must be completely closed. In the process of gradual cooling of the air, the temperature will begin to decrease and as soon as it reaches the required values, the thermostat can be gradually opened until the coolant is supplied to the system. Usually you just hear how water or other coolant fluid begins to circulate inside the radiator. For sensors equipped with electronic control, you just need to select the desired heating temperature and fix it in the program. If necessary, the temperature can easily be changed directly during operation. After the end of the heating season, it is recommended to leave the Danfoss radiator temperature regulators at maximum open position, to circulate inside the valve and reduce the possibility of blockage.

Heating and ventilation costs average 30-50% family budget. And the problem is not in the function itself, but in poor energy consumption. Convenient solution Danfoss offered a thermostat to control the temperature in the house and the operation of the heating system. This device can be used in combination with almost all boilers, including heating devices with liquid coolant.

The thermal head is used at home, in apartments, industrial premises, warehouses, closed greenhouses and conservatories, in a word, wherever a relatively constant temperature regime is required. Moreover, this applies not only to heating, but also to air conditioning. Thus, the thermal head interacts equally successfully with air conditioners, refrigeration equipment and other units responsible for temperature.

Design features

The main purpose of the Danfoss thermostat is to long-term maintain the user-selected temperature regime. The design of the device includes two main parts:

• thermostatic element or as it is also called - thermostat;
• valve.

The valve is first mounted on the battery and only the thermostat is installed on it. It is the second element that is the main one in the design of the device. It monitors the ambient temperature, after which it sends the necessary signal to the valve, which in turn opens or closes the coolant flow.

In internal area The Danfoss thermostat has a bellows - a corrugated container filled with gas or liquid. When exposed to temperature, the filler begins to change size and put pressure on the shut-off valve. When the coolant flow is blocked in heating units The temperature begins to rise.

If the room has become very cold, the filler contracts and a reverse reaction occurs - the chamber pulls the spool rod behind it, which in turn opens the gap in the valve element for coolant to flow in.

The company produces two types of thermostats - gas and liquid. But the second option is considered more inert; it gives a signal to change the temperature regime much slower.

Types and symbols of devices

The type of filler and purpose are determined by the following abbreviation:

• RTS - liquid bellows

• RTD-G - gas device for one-pipe or two-pipe systems in which there is no pump

• RTD-N- gas device for one-pipe, two-pipe pumping system

In some models, in addition to the main function, there are a number of additional options. For example, a program to protect against interference in the installed settings by random persons. The option will be convenient for installation in public institutions or children's institutions. The number of modes and types of functions vary depending on the selected modification.

Model range of devices

The company produces a fairly wide the lineup Danfoss heating temperature controllers.

The most popular variations are:

1. Danfoss RDT marking 3640 - the device is intended for use on two-pipe heating systems standard type. It is equipped with an RTD option, which prevents freezing of the main line during the cold season. Used in domestic and industrial conditions. It has four divisions with designations in the form of Roman numerals.
2. Danfoss regulator RAX- liquid type devices that are used for installation on designer-type radiators or heated towel rails. It has attractive external parameters and a minimalist style. On the case there are only divisions with Roman or Arabic numerals.
3. Living ECO with the function of monitoring the microclimate in the house. This is an improved series that is successfully used in commercial establishments and residential buildings. The peculiarity of the thermostat for a heating radiator is that it has a liquid crystal screen that provides all the necessary information about the coolant. There are also three main mode setting keys on the case.
4. Gas appliance Danfoss RA-299 with automated temperature control is available in several color solutions. It responds quickly to temperature changes. It is used exclusively for equipping traditional heating systems.
5. 013 G4 001-013 G4 009 - multifunctional series of devices suitable for both heated towel rails and various areas of the heating device. There are left- and right-handed types.

Each of the presented options is equipped with parts that simplify the installation of the device and its subsequent use.

VIDEO: Review of Danfoss thermostatic kits

Installation of thermal head

The Danfoss thermostat is installed directly on the “hot” pipe, which supplies coolant to the household heating system. Installation work do not have any difficulties, even when it comes to design variations, the installation principle is the same for everyone.

The following steps must be followed:

1. Make a mark on the supply pipe to determine the area that needs to be cut. In this case, take into account the dimensions of the valve body and remove the threaded element that will fit directly into the pipe.
2. Turn off the heating and drain the water so as not to flood the house while working.
3. Using the marks, cut off the unnecessary section of the pipe and make a thread on the outer part of the cut using a die.
4. Treat the connecting part with a special plumbing paste from any manufacturer and a foam tool.
5. Screw the valve element onto the thread that was made with a die, and then tighten it well with a washer. There is no need to additionally seal the joint area; this connection will be sufficient to prevent the pipe from leaking.
6. Remove the fuse, set the thermostat to the maximum value of “5” and put the housing with the scale on top. The cap is put on all the way, the defining signal is a loud click, it indicates tight contact of the parts.
7. Check all connections and connect the heating device back to the general heating system.

Check the operation of the Danfos regulator before opening and closing the valve device for the first time. If the installation was carried out according to the rules, there should be no problems.

How to adjust the device

Although all modifications of Danfoss thermostats have differences in external parameters, technical specifications, setting up devices is done using the same method. To implement this, you will need to refer to the operating instructions and study the designations of the modes indicated on the device body. Indicators may differ depending on which model is used.

Next, set the device to the desired temperature setting. To do this, move the torque element to the required mode. If a device with push-button control was installed, all manipulations are carried out by pressing the “increase” or “decrease” temperature keys.

You can also choose an intermediate parameter if it is more suitable for creating a specific microclimate in the house. After a few minutes, the heating system will adjust to the selected values ​​and will heat the room until the desired microclimate is achieved. The valve is adjusted in a similar way for refrigeration units.

VIDEO: How to properly install a thermal head on a radiator

Temperature regulators used in heating and cooling systems for buildings. Some types of regulators are possible use on pipelines, including fire-fighting ones. It is also possible to use regulators for connecting water supply to technological installations . To reduce heat loss, the system district heating, just like an individual heating point, can be equipped with temperature regulators. It is possible to combine a regulator and a safety thermostat.

Technical characteristics of temperature controllers:

• Maximum operating temperature up to 350ºC
• Maximum nominal diameter DN(Doo) up 125 mm
• Conditional pressure PN(Py) varies 10/16/25/40 bar
• Type of execution: block
• Safety according to standards developed by the German Standardization Institute

Temperature controller gradation according to technical characteristics:

• Small series AVTB, RAVI, RAVV, RAVK,
• Middle series AVT, AVTQ, FJV
• Big series A.F.T.

Small series regulator are used for installation in small buildings, such as country houses and townhouses. Usually temperature regulators This series is used in systems with constant coolant parameters, in capacitive water heaters and in conjunction with heat supply systems for ventilation units.

Medium Series Regulators used in hot water supply systems, in systems using steam as a coolant, as well as in refrigeration systems. Installation of regulators is possible both on the supply and return pipelines.

Regulators large series are used in hot water supply systems and systems with a return pipeline. Regulators operate based on the principles of liquid expansion. Built-in or remote adjustment units are provided.