Danfoss thermostat for heating radiator instructions. Danfoss thermostats for heating radiators and heated floors. Installation of Danfoss thermal head

Sometimes it becomes necessary to adjust the temperature in each specific room. This can be done by installing a thermostat for the heating radiator. This is a small device that regulates the heat transfer of a heating battery. Can be used with all types of radiators, except cast iron. One important point- the device can lower the initial temperature, but if there is not enough heating power, it cannot increase it.

Design of thermostats for heating radiators

The thermostat for a heating radiator consists of two parts - a valve (thermovalve) and a thermostatic head (thermostatic element, temperature regulator). These products are produced under different sizes pipes and different types heating systems. The thermostatic head is removable; regulators can be installed on the same valve different types and even different manufacturers— the seat is standardized.

The thermostat for a heating radiator consists of two parts - a special valve (valve) and a thermostatic head (regulator)

There are different valves and regulators, so before installing a thermostat for a heating radiator, you will have to become at least a little familiar with its structure, functions and types.

Thermal valve - structure, purpose, types

The valve in the thermostat is very similar in structure to a regular valve. There is a seat and a shut-off cone that opens/closes the gap for coolant flow. The temperature of the heating radiator is regulated in this way: by the amount of coolant passing through the radiator.

The valves are installed differently for one-pipe and two-pipe wiring. The hydraulic resistance of a valve for a one-pipe system is much lower (at least two times) - this is the only way to balance it. You can't mix up the valves - it won't heat. For systems with natural circulation Valves are suitable for single-pipe systems. When installing them, the hydraulic resistance, of course, increases, but the system will be able to work.

Each valve has an arrow indicating the movement of the coolant. During installation, it is installed so that the flow direction coincides with the arrow.

What materials?

The valve body is made of corrosion-resistant metals, often additionally coated protective layer(nickel or chrome plated). There are valves from:

It is clear that stainless steel is the best option. It is chemically neutral, does not corrode, and does not react with other metals. But the cost of such valves is high and it is difficult to find them. Bronze and brass valves have approximately the same service life. What is important in this case is the quality of the alloy, and it is carefully monitored famous manufacturers. Whether or not to trust unknowns is a controversial issue, but there is one point that is better to keep track of. There must be an arrow on the body indicating the direction of flow. If it is not there, then you have a very cheap product that is better not to buy.

By method of execution

Since radiators are installed different ways, the valves are made straight (through) and angular. Choose the type that will work best for your system.

Thermostatic heads

There are three types of thermostatic elements for heating thermostats - manual, mechanical and electronic. They all perform the same functions, but in different ways, provide different levels of comfort, and have different capabilities.

Manual

Manual thermostatic heads work like a regular faucet - you turn the regulator in one direction or another, allowing more or less coolant to flow through. The cheapest and most reliable, but not the most convenient devices. To change the heat transfer, you must manually turn the valve.

Manual thermal head - the simplest and most reliable option

These devices are quite inexpensive, they can be installed at the inlet and outlet of a heating radiator instead of ball valves. Any of them can be adjusted.

Mechanical

More complex device, which maintains the set temperature in automatic mode. The basis of this type of thermostatic head is a bellows. This is a small elastic cylinder that is filled with a temperature agent. A temperature agent is a gas or liquid that has a high coefficient of expansion - when heated, it greatly increases in volume.

The bellows supports the rod, which blocks the flow area of ​​the valve. Until the substance in the bellows heats up, the rod is raised. As the temperature rises, the cylinder begins to increase in size (gas or liquid expands), it puts pressure on the rod, which increasingly blocks the flow area. Less and less coolant passes through the radiator, and it gradually cools down. The substance in the bellows also cools down, due to which the cylinder decreases in size, the rod rises, more coolant passes through the radiator, and it begins to warm up a little. Then the cycle repeats.

Gas or liquid

With such a device, the room temperature is fairly maintained at exactly +- 1°C, but in general the delta depends on how inert the substance in the bellows is. It can be filled with some kind of gas or liquid. Gases react faster to temperature changes, but are technologically more difficult to produce.

Liquid or gas bellows - not much difference

Liquids change volumes a little more slowly, but are easier to produce. In general, the difference in the accuracy of temperature maintenance is about half a degree, which is almost impossible to notice. As a result, most of the presented thermostats for heating radiators are equipped with thermal heads with liquid bellows.

The mechanical thermostatic head should be installed so that it faces the room. This way the temperature is measured more accurately. Since they are quite large in size, this installation method is not always possible. For these cases, you can install a thermostat for the heating radiator with a remote sensor. The temperature sensor is connected to the head using a capillary tube. You can place it at any point where you prefer to measure air temperature.

All changes in heat transfer from the radiator will occur depending on the air temperature in the room. The only disadvantage of this solution is high price such models. But the temperature is maintained more accurately.

Electronic

By size electronic thermostat for a heating radiator even more. The thermostatic element is even larger. In addition to the electronic filling, it also contains two batteries.

In this case, the movement of the stem in the valve is controlled by a microprocessor. These models have a fairly large set additional functions. For example, the ability to set the room temperature by the hour. How can this be used? Doctors have long proven that it is better to sleep in a cool room. Therefore, at night you can program the temperature lower, and in the morning, when it’s time to wake up, you can set it higher. Comfortable.

The disadvantage of these models is big size, the need to monitor battery discharge (enough for several years of operation) and high price.

How to install correctly

Install a thermostat for the heating radiator at the inlet or outlet heating device- there is no difference, they work with equal success in both positions. How to choose a place to install?

According to the recommended installation height. There is such a point in technical specifications. Each device is configured at the factory - they are calibrated to control the temperature at a certain height and usually this is the upper radiator manifold. In this case, the heat regulator is installed at a height of 60-80 cm; it is convenient to adjust it manually if necessary.

If you have a bottom saddle connection (pipes fit only from the bottom), there are three options - look for a device that can be installed at the bottom, install a model with a remote sensor, or reconfigure the thermal head. The procedure is simple; the description must be in the passport. All you need is to have a thermometer and at certain moments turn the head in one direction, then in the other direction.

Installation is standard - on fum tape or linen winding with packaging paste

The installation process itself is standard. The valve has a thread. The appropriate fittings are selected for it or metal pipe counter thread is cut.

One important point that those who want to install a thermostat for a heating radiator should remember apartment buildings. If you have a single-pipe installation, they can only be installed if there is a bypass - a section of pipe that stands in front of the battery and connects the two pipes to each other.

Otherwise, you will regulate the entire riser, which your neighbors will definitely not like. For such a violation, a very substantial fine can be issued. Therefore, it is better to install a bypass (if not).

How to adjust (reconfigure)

All thermostats are factory adjusted. But their settings are standard and may not match your desired parameters. If you are not satisfied with something in the work - you want it to be warmer/colder, you can reconfigure the thermostat for the heating radiator. This must be done with the heating running. You will need a thermometer. You hang it at the point where you will control the state of the atmosphere.

• Close the doors, put the thermostat head in the extreme left position - completely open. The room temperature will begin to rise. When it becomes 5-6 degrees higher than what you want, turn the regulator all the way to the right.
• The radiator begins to cool down. When the temperature drops to a value that you consider comfortable, begin to slowly turn the knob to the right and listen. When you hear the coolant making noise and the radiator starting to warm up, stop. Remember what number is on the handle. It will need to be set to achieve the required temperature.

Adjusting the thermostat for a radiator is not difficult at all. And you can repeat this action several times, changing the settings.

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, the products of a famous 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. It is he who reacts to changes in 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. The gas, depending on the 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 it occurs reverse process expansion and blocking of the lumen (the accepted standard is 2 V ° C in excess of the air temperature above the set one).

When the regulator scale is set to comfortable temperature, 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 single pipe system, or two-pipe without a pump;
• RTD-N - gas bellows for two-pipe system, 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 a remote 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 more exact result measurements.
• With a temperature range slightly smaller than conventional sensors for integration into a system where payment is made according to regulations.

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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 use room thermostats with heated floor temperature sensors.

Installation of the thermostatic element

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 should be the same length as the valve body minus the threaded connections.
2. The heating pipe is cut and the extra section is cut out.
3. Using a leech, or die, on outside The cut pipe is threaded.
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, with opposite side valve, the American union nut is twisted 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 maximum temperature value is set on the thermal head, 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 fixed to the selected location using a pair of self-tapping screws.
3. A capillary tube is wound inside the sensor. She is pulled out desired 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.

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Read which insulation for a warm floor to choose. And also you will find general information about laying insulation.

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.

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 also, in some cases, significant budget savings.

Video on the topic

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 find here. 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 a thermostatic element that senses temperature changes and sends a signal to a valve that shuts off 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 one).

When set on the instrument scale optimal degree, 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 – gas appliance 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. Can only be used for installation on classic heating systems.
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 both heated towel rails and different areas 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. The excess section of the pipe is cut off according to the marks, and a thread is made with a die on the outer part of the cut.
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 the best way suitable for creating a specific 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

Danfoss floor heating thermostat – 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 heats up, for example, sun rays, and residents strive 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 item 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.

Danfoss thermostat is a device that is widely used in various home and industrial applications. heating systems. Such samples are distinguished by high quality, accuracy and ease of use.

Let's study their features in more detail so that you can also use these advanced mechanisms for your systems.

Description and purpose

Danfoss regulator is a device that is used to regulate the air temperature in a room. Such a device can be used in various heating systems, including those where the heat carrier is water.

The regulator allows you to manually control the operation of such a system, use heat economically, and also turn the entire heating system on and off. The thermostat is used both in home networks and in closed ecosystems such as greenhouses, or in industries. It is also used to operate refrigerators, air conditioners and other systems in which it is important to maintain temperature conditions.

1.1 Design of Danfoss thermostats

Danfoss regulator, regardless of its design. It is a small chamber filled with gas or liquid. This liquid or gas expands when exposed to temperature, pressing on the shut-off valve, which stops the flow of heating fluid into the radiator, causing the system to increase the temperature.

When the room cools, the liquid contracts and a reverse reaction occurs. This operating system is valid for all types of radiators, including products for refrigerators. Almost all products from this manufacturer work according to this principle, including Danfoss RTD and Danfoss lines RA, as well as many others.

2 Model range of Danfoss thermostats

Danfoss has enough wide range thermostats. Currently, its products include the following types of devices:

• thermostats for controller design model range 013G4001- 013G4009. Applicable for heated towel rails, as well as various sections of heating networks. Available in versions for right- and left-hand installation;

• Danfoss RTD 3640 is a type of model for heating systems. Designed for a two-pipe standard system. They have an RTD function to protect against freezing for the winter. This variety is suitable for home, industrial systems heating, but not for refrigerators. It has only 4 divisions, indicated by both Arabic and Roman numerals;

• RAX models with liquid filler. This series is also intended for heated towel rails and design radiators. The model is applicable to most modern versions of design radiators; it has divisions with both Arabic and Roman numerals;

All presented versions of thermostats are accompanied by a whole series of special accessories that simplify their installation, as well as further use.

Almost all thermostats released in this series are available in three various options: golden, white, silver. You can choose the type that suits your system, the valve and temperature jack work in almost the same way.

2.1 How to install a Danfoss thermostat?

The Danfoss regulator is mounted directly on the hot supply pipe of your heating system. Installation of any model, including the RTD 3640, RA, is easy. In this case you will have to work like this:

1. We disconnect the system from the general power, cut off the pipe the right size for installing a thermostat. Without this step, the installation will not proceed.
2. On the existing pipe we do it using special devices thread on which the thermostat will be installed.
3. We treat the area with plumbing paste, and then attach the RTD 3640, RA or any other valve body to it.
4. We connect the device itself to the valve, tightening the connection with a washer. Additional sealing is not needed here.
5. We remove the fuse, set the thermostat to the maximum value of 5, then put a cap with a scale on it. It is important to install it until it clicks for the tightest and highest quality fit.
6. We check the sealing of the system again, after which we can connect it back to common system supplies. Let the valve open and close once and you will be sure that the equipment is working correctly.

Installation of RTD, RA or other model is complete. Now you can use the device freely.

2.2 How to set up a Danfoss thermostat?

Setting up a device such as the Danfoss RTD regulator, RA is quite simple and accessible to all users. In order to do this, you need to study the temperature scale available at the end of the device (it may differ slightly depending on which version you are using). Then set the temperature you are interested in by simply moving the pointer on the device to the parameter you need.

You can also choose intermediate values ​​if they suit you. After just a few minutes, the valve will adjust to desired position, and the temperature in the apartment will come to the desired parameter, and you will be able to enjoy the most comfortable microclimate for you. The valve is adjusted in the same way for models for refrigerators.

2.3 Danfoss thermostat and its types (video)