Danfoss thermostats instruction. Danfoss thermostats. Thermostatic elements of the RAW series

The heating system is one of the most important details any home. Unfortunately, it is on it that the greatest costs are spent during the payment of utility bills, and regardless of the installed autonomous or centralized heating.

Receive comfortable temperature and significantly reduce the cost of paying bills for consumed heat energy help thermostats installed on each radiator battery.

A special effect can be obtained by installing temperature controllers for Danfoss radiators, capable of maintaining the required temperature in the room with an accuracy of 1 degree.

Principle of operation and design

After reaching the set temperature, the Danfoss thermostat reduces the supply of heat carrier, thereby reducing the heating temperature and energy consumption in the heater.

The equipment consists of two main components:

1. The thermostatic element responsible for controlling the device.
2. Valves regulating the return of coolant to the radiator. Performing element.

The temperature control system can be mechanical or electronic. Danfoss electronic thermostats for heating radiators are equipped with a small display to show information about the entered program.

Differences of some models

• 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 the lower or upper type of connection.

The possibility of implementing any type of connection is carried out thanks to the rod located along the axis of the shank. The model designation for such equipment is RTD-N UK. The wide range of mounting options for the UK model makes it possible to use them in conjunction with Danfoss floor convectors.

Corner temperature controllers are mounted directly on the coolant intake point by the radiator and require a minimum of additional installation work, do not take up extra space. Sensors such as RTD - N or RTD - G are marked, depending on the model. Increased throughput makes it possible to use the thermal valve in closed and open heating systems.

Another type of temperature controller for Danfoss radiators is the option 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.

Installing and configuring the sensor

If the installation of a thermal head for Danfoss RTD 3640 radiators or other similar models is not possible due to hidden placement batteries, you need to take care of an external remote sensor.

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

The temperature controllers for Danfoss radiators are set up once, at the beginning of each heating season. For proper adjustment, 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 opens as much as possible. stop valve thermostat.

After the temperature in the room begins to slightly exceed the one that 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 indicators you need, the thermostat can be gradually opened until the coolant is supplied to the system. Usually you just hear how water or other liquid coolant begins to circulate inside the radiator.

For sensors equipped with electronic adjustment, simply select the desired heating temperature and fix it in the program. If necessary, the temperature can be easily changed directly during operation.

After the end of the heating season, Danfoss radiator temperature controllers are recommended to be left at the maximum open position, to circulate inside the valve and reduce the possibility of clogging.

In countries post-Soviet space up to 40% of energy resources are spent on the needs of heating and ventilation of buildings, which is several times more than in advanced European countries. The issue of energy conservation is more acute than ever, especially against the backdrop of a constant increase in the cost of energy. One of the devices that saves heat energy in the house is a battery thermostat, whose installation can reduce heat consumption by up to 20%. But for this it is necessary to correctly select the regulators for the heating system and install them, which will be discussed in this article.

The principle of operation of a thermostatic valve

The first thermostats for radiators designed to maintain constant temperature indoors, were invented back in 1943 by DANFOSS, which also owns the market leadership in the production and sale of such devices. For this reason, our article will be based on the materials and recommendations of DANFOSS, whose years of experience is beyond doubt.

Over the years since their invention, thermostats for radiators have evolved and become what we know them to be. Structurally, they consist of two main elements: a valve and a thermal head, interconnected by a locking mechanism. The purpose of the thermal head is to sense the temperature environment and to regulate it, act on the actuator - the valve, it shuts off the flow of coolant entering the heater.

This method of regulation is called quantitative, since the device affects the flow rate of the coolant passing into the radiator. There is another method - qualitative, with its help the temperature of the water in the system changes. This is carried out by a temperature controller (mixing unit) installed in a boiler room or heating point.

To understand the principle of operation of the thermal head, it is proposed to study the diagram of the device shown in the section:

Inside the body of the element there is a bellows filled with a temperature-sensitive medium. It is of two types:

• liquid;
• gas.

Liquid bellows are easier to manufacture, but lose to gas bellows in terms of speed, so the latter are very widespread. So, when the air temperature rises, the substance in the enclosed space expands, the bellows stretches and presses on the valve stem. That, in turn, moves down a special cone, which reduces the flow area of ​​the valve. As a result, the coolant consumption is reduced. When the ambient air is cooled, everything happens in the reverse order, the amount of flowing water increases to a maximum, this is the principle of operation of the thermostat.

Depending on the type of heating system and the installation conditions of the device, valve-thermal head kits can be used to control the flow of the heat carrier. various combinations. In single-pipe heating systems, it is recommended to install valves with increased capacity and low hydraulic resistance (DANFOSS product marking - RA-G, RA-KE, RA-KEW).

The same recommendation applies to two-pipe gravity systems, where the coolant circulates naturally, without forced stimulation. If the heating scheme is two-pipe with circulation pump, then you should choose a valve with the ability to adjust bandwidth(DANFOSS marking - RA-N, RA-K, RA-KW). This adjustment is quite simple and no special tool is needed.

When the issue with the selection of the valve is resolved, you need to decide on the type of thermal head. They are offered in the following versions:

1. With an internal thermocouple (as in the diagram above).
2. With remote temperature sensor.
3. With external regulator.
4. Electronic (programmable).
5. Anti-vandal.

A conventional thermostat for heating radiators with an internal sensor is accepted for installation if it is possible to position its axis horizontally so that the room air freely flows around the body of the device, as shown in the figure:

Attention! It is not allowed to install the thermostat on the battery in a vertical position, the heat flow rising from the supply pipeline and the valve body will affect the bellows, as a result of which the device will not work correctly.

If horizontal mounting head is impossible, it is better to purchase a remote temperature sensor for it complete with a capillary tube 2 m long. It is at this distance from the radiator that this device can be placed by attaching it to the wall:

In addition to vertical mounting, there are other objective reasons for buying a remote sensor:

• heating radiators with a temperature controller are located behind thick curtains;
• in the immediate vicinity of the thermal head, pipes with hot water or there is another source of heat;
• the battery is under a wide window sill;
• the internal thermoelement enters the draft zone.

In rooms with high demands to the interior, batteries are often hidden under decorative screens made of various materials. In such cases, the thermostat that has fallen under the casing registers the temperature of the hot air accumulating in the upper zone and can completely block the coolant. Moreover, access to head control is completely closed. In this situation, the choice should be made in favor of an external regulator combined with a sensor. Options for its placement are shown in the figure:

Electronic thermostats with a display also come in two types: with built-in and removable control unit. The latter differs in that the electronic unit is disconnected from the thermal head, after which it continues to function normally. The purpose of such devices is to adjust the temperature in the room according to the time of day in accordance with the program. This allows you to reduce the heating output during working hours when no one is at home and in other similar cases, which leads to additional energy savings.

When there are small children in the house who want to try everything with their own hands, it is better to install an anti-vandal type thermostat with a casing that protects the device settings from unskilled interference. This also applies to thermostats in other public buildings A: Kindergartens, schools, hospitals and so on.

How to install a thermostat on a battery

The first recommendation is not to put thermal heads on all heaters within sight. Here the rule is as follows: radiators whose total power is 50% or more of all those in the same room should be regulated. For example, when there are 2 heaters in the room, then 1 battery, whose power is greater, should be equipped with a thermostat.

Advice. If as heating appliances applied cast iron radiators, then maintaining the microclimate using thermostatic valves will be ineffective. The point is that work cast iron batteries very inertial, after blocking the coolant flow, they radiate heat for a long time and vice versa, they accelerate for a long time. Mounting valves does not make sense, you will only waste your time and money.

The first part of the device - the valve - is recommended to be mounted on the inlet supply pipeline at the moment the radiator is connected to the heating system. In case it needs to be embedded in assembled system, then the supply line will have to be dismantled. This will cause some difficulties if the connection is made steel pipes, you will need a tool for cutting pipes and threading.

After the thermostat is installed on the heating battery, the thermal head is mounted without any tools. It is enough just to combine the marks on the cases and fix the head in the socket with a smooth pressure. The click of the locking mechanism will serve as a signal.

It is a little more difficult to install an anti-vandal thermostat, for this you need a 2 mm hex wrench. Having combined the required marks, as shown in the diagram, you need to press the thermal head, and tighten the fixing bolt located on the side with a hexagon.

The installation of the remote sensor and regulator is carried out on a section of the wall free from interior details and furniture, placing them at a height of 1.2-1.6 m from the floor, as shown in the diagram:

First, a mounting plate is attached to the wall with dowels, and then the case is snapped onto it with a simple click. The capillary tube is fixed to the wall with plastic clamps, as a rule, they are included with the product.

In addition to the standard temperature control in the heads, the thermostat is set to the maximum and minimum limits, beyond which the wheel will become impossible to turn. For this, restrictive pins located at the rear of the product are provided. You need to pull out one of them and, after debugging the system, insert it into the hole under the corresponding label:

Conclusion

Selecting a thermostat is not a difficult task, it is important to understand under which heating system the valve is purchased and to know where it will be located. Programmable devices are definitely recommended as the most economical.

On this page you can find and download manuals for Automation, regulators, modules, thermostats,... Danfoss in pdf format.

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Danfoss A217, A317 series electronic application key for ECL Comfort 210 / 310 temperature controllers. Operating instructions. Language: RU | pdf 4.08 Mb

Danfoss A230 series programming keys for ECL Comfort 210 / 310 temperature controllers. Operating instructions. Language: RU | pdf 2.43 Mb

Danfoss A231, A331 programming keys for ECL Comfort 210 / 310 temperature controllers. Operating instructions. Language: RU | pdf 3.16 Mb

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Danfoss A275, A375 programming keys for ECL Comfort 210 / 310 temperature controllers. Operating instructions. Language: RU | pdf 6.43 Mb

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Heating and ventilation costs average 30-50% of the family budget. And the problem is not in the function itself, but in poor-quality energy consumption. A convenient solution was offered by Danfoss - 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 a liquid heat carrier.

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

Design features

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

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

A valve is first mounted on the battery and only a 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 gives the necessary signal to the valve, which in turn opens or closes the coolant flow.

In the inner area of ​​the Danfoss thermostat there is a bellows - a corrugated container filled with gas or liquid. When exposed to temperature, the filler begins to change dimensions and press on the shut-off valve. When the coolant flow is blocked in the heating units, the temperature indicator begins to rise.

If the room is very cold, the filler is compressed and a reverse reaction is formed - the chamber pulls the spool rod behind it, which in turn opens a gap in the valve element for the coolant to enter.

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

Varieties and symbols of devices

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

• RTS - liquid bellows

• RTD-G - gas appliance for single pipe or two-pipe system without a 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 with the set 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 differ depending on the selected modification.

Model range of devices

The company produces a fairly wide range of Danfoss heating temperature controllers.

The most popular variations are:

1. Danfoss RDT marking 3640 - the device is intended for use on standard two-pipe heating systems. It is equipped with the RTD option, which excludes freezing of the main line in the cold season. Used in household industrial environment. It has four divisions with designations in the form of Roman numerals.
2. The Danfoss RAX regulator is a liquid type of device that is used for installation on designer-type radiators or heated towel rails. It has attractive external parameters and a minimalistic 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 advanced series that has been 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 reports all necessary information about the coolant. Also on the case there are three main keys for setting modes.
4. gas appliance Danfoss RA-299 with automated temperature control is available in several color solutions. It reacts 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 towel warmers and various areas heating device. There are left and right hand types.

Each of the presented options is completed with details that simplify the mounting of the device and its subsequent use.

VIDEO: Overview of Danfoss thermostatic kits

Mounting the thermal head

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

Need to follow next steps works:

1. Mark the inlet pipe to determine the area to be cut. When doing this, take into account the dimensions of the valve body and take away the threaded element, which will go directly into the pipe.
2. Turn off the heating and drain the water so as not to flood the house during work.
3. According to the marks, cut off an 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 of any manufacturer and a fumka.
5. Screw the valve element onto the thread that was made with a die, then tighten it well with a washer. Additionally, it is no longer necessary to seal the joint area; this connection will be enough to prevent the pipe from leaking.
6. Remove the fuse, set the maximum value of “5” on the thermostat and put on the case with the scale on top. The cap is put on until it stops, a ringing click is the defining signal, it indicates a tight contact of the parts.
7. Check all connections and connect thermal device back to the common heating system.

Check the functioning of the Danfos regulator before the first opening and closing of the valve assembly. 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, device settings are done in the same way. To implement it, you will need to refer to the operating instructions and study the designations of the modes indicated on the device case. The indicators may differ depending on which model is used.

Next, set the desired temperature on the device. 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 keys "add" or "decrease" the temperature.

You can also choose an intermediate parameter if it is more suitable for creating a certain microclimate in the house. After a few minutes, the heating system will adjust to the selected values ​​and will reproduce the heating of the room until the desired microclimate is obtained. In a similar way the valve is also configured for refrigeration units.

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

The Danfoss thermostat is a device that is widely used in various domestic as well as industrial heating systems. Such samples are of high quality, accuracy and ease of use.

Let's study their features in more detail so that you also have the opportunity to use these perfect mechanisms for your systems.

Description and purpose

The Danfoss controller is a device that is used to control the room temperature. Such a device can be used in various heating systems, including those where water acts as a heat carrier.

The regulator allows you to manually control the operation of such a system, save heat, and also turn on and off the operation of all heating. The thermostat is used both in home networks and in closed ecosystems such as greenhouses, or in production. It is also used for the operation of refrigerators, air conditioners and other systems in which it is important to observe the temperature regime.

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, when exposed to temperature, expands, presses on the shut-off valve, as a result of which the flow of heating fluid to the radiator stops, due to which the system increases the temperature.

When the room is cooled, the liquid contracts and the reverse reaction occurs. Such a system of work is valid for all types of radiator, including products for refrigerators. Almost all products of this manufacturer work according to this principle, including Danfoss RTD and Danfoss ranges RA and many others.

2 Danfoss range of thermostats

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

• thermostats for design regulators model range 013G4001- 013G4009. Suitable for heated towel rails, as well as various sections of heating networks. Are issued in versions for right - and left-sided installation;

• Danfoss RTD 3640 is a variety of models for heating systems. Designed for two-pipe standard system. Have RTD function of protection 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;

• liquid-filled RAX models. This series is also intended for heated towel rails and design radiators. The model is applicable to most modern versions of design radiators, 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 and further use.

Almost all thermostats produced in this series are presented in three various options: golden, white, silver. You can choose the type that suits your system, the valve and temperature jackal work almost the same for them.

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 RTD 3640, RA, is not difficult. In this case, you will have to work like this:

1. We disconnect the system from the total capacity, cut off the pipe of the required size for the installation of a thermostat. Without this step, the installation fails.
2. Using special devices, we make a thread on the existing pipe, on which the thermostat will be installed.
3. We process the area with sanitary paste, and already on it we attach the valve body RTD 3640, RA or any other.
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 most tight and high-quality fit.
6. Once again we check the sealing of the system, after which it 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 freely use the device.

2.2 How to set up a Danfoss thermostat?

Setting up such a device as the Danfoss RTD, RA regulator is quite simple and accessible to all users. In order to implement it, 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. Within 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 regulated in the same way for models for refrigerators.

2.3 Danfoss thermostat and its types (video)