Room thermostat for gas boiler serves to control and maintain temperature, and also allows for more economical fuel consumption. Installing this device allows you to increase the efficiency of the heating boiler by 20-30% and simplify the process of servicing it. Exist different kinds thermostats, differing in installation method and characteristics.

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Purpose and principle of operation

The heating system includes a connection point to the central network or heating equipment, radiators and pipes for distribution. For supporting optimal level heat, you need to monitor the operation of the boiler, open or close the taps on the radiators.

The system is inert, which makes it impossible to maintain a stable temperature throughout the day. With a larger supply of gas to the boiler, heating of the coolant will increase, and heat transfer will also increase.

This arrangement is convenient in the cold season, but when it warms up the room becomes too hot. After loading the fuel and heating the water, it will no longer be possible to reduce the excess heat; you will have to manually turn off the boiler and open the windows to cool the room. At the same time, fuel costs will also increase significantly.

Room Thermostat Nuances Settings

A room thermostat for a gas boiler allows you to solve the problem and simplify the work of heating the room, creating a comfortable climate in the house. The device regulates the heat supply and maintains the set temperature. It includes the following elements:

• tuning block;
• mechanical type valve or electromagnetic relay;
• temperature sensitive element;
• control module.

Job simple devices regulated by mechanical elements and physical changes in the characteristics of the temperature-sensitive sensor. There is no control unit in such devices. They also do not require power supply. Mechanical thermostats are less accurate and efficient than models that require programming. But autonomy from the energy source allows them to function even during power outages.

The room thermostat for the boiler has the following operating principle:

• The required temperature is set by the control unit.
• When the configured parameters are reached, the sensor is triggered, the boiler is switched off or the valve in the heating pipes is closed.
• When the air temperature drops, the heaters or boiler room equipment turn on again.

With help electronic module You can set several temperature values ​​for different times of the day. This block also allows you to install a remote sensor outside the room; the thermostat will work based on its data.



Types of thermostats

The simplest type of thermostat is a shut-off valve with a sensor installed near the battery on a pipe. The valve partially blocks the flow of coolant when the set temperature is reached. Its re-opening occurs when the air cools, and heat begins to flow in full.

Wireless control units and sensors are present in more advanced and complex models. The interaction of individual elements occurs through the transmission of a radio signal. When installing the device, there are no wires, which improves the aesthetic appearance of the structure and the room as a whole.

Different types of temperature-sensitive sensors are the main difference between thermostats. Some elements are mounted inside the pipe, others - on its surface. There are also wall-mounted models. Some devices measure the heating of the coolant, while others measure the air temperature. The choice of device is determined by a number of characteristics:

• boiler type;
• the necessary set of functions;
• wiring diagram present in the heating system;
• size free space in the room.

Sensor for gas boiler from Aliexpress. Installation of YKC B703 sensor.

Among modern models, there are often boilers that already provide the ability to connect a thermostat. In this case, the equipment manufacturer indicates the installation features of the elements in the data sheet.

Connection diagram, which involves adjusting the functioning of the thermostat heating element(fuel supply), is most effective for saving fuel reserves. This arrangement of the device is suitable for electric and gas boilers. For solid fuel devices, you will need to install a mechanical thermostat directly on the pipe.

Regulators located on the battery block the water supply when the coolant overheats or is too high temperature air. The operation of the boiler stops belatedly, after the individual temperature sensor installed on it is triggered.



Mechanical devices

A room thermostat for a heating boiler with a mechanical structure, when heating or cooling a material, changes its characteristics. This device is affordable, simple and effective in operation, and does not depend on the availability of a power source. It is mounted on pipes heating system.

The mechanical model consists of several elements:

• valve;
• rod;
• thermostatic head;
• union nut;
• scales for setting the temperature;
• fixing ring;
• bellows filled with liquid;
• spool;
• compensation mechanism;
• outlet for connection to the pipe.

Temperature changes are recorded using reagents. The liquid heats up, causing the gas to expand. Under the resulting pressure, the shut-off valve is activated. Cooling causes the substance to compress and the spring of the blocking element to relax.



Thermostats of this type have a high adjustment error and reduced sensitivity. To activate them, a temperature change of more than 2 °C is required. The characteristics of the substance in the bellows decrease over time, which leads to a discrepancy between the values ​​​​on the regulator handle and real indicators.

The devices are also quite large. Many models define temperature indicators coolant, but do not measure the level of air heating in the room. They are difficult to customize optimal temperature without errors.

Does a thermostat for a gas boiler save gas?



Electromechanical devices

The operating principle of this room temperature sensor for a gas boiler is similar to the operation of its mechanical counterpart. But here the heat-sensitive component is a metal plate. It bends when heated and completes the circuit. The cooled plate takes its original shape. The contact transmits a signal to the burner control unit.

There is another type of electromechanical regulators containing two metal plates different types. Here the heat-sensitive component is placed in the boiler firebox. The potential difference that occurs when the temperature changes has an effect on the electromagnetic relay, which leads to the closing or opening of the contacts. At the same time, the air supply to the combustion compartment is turned on or off.

Electronic thermostats

This category of room temperature controllers for gas boilers depends on the power supply. Electronic devices equipped with a remote sensor for recording room heating indicators, a fully functional control unit with a display. Such devices must be installed on electric boilers, since without them the operation of the heaters will be continuous. The thermostat contains two main elements:

• microcontroller;
• temperature sensor.

The second component measures the heating rate, and the first controls their value and sends signals to reduce or increase the heat flow into the room. The controller receives a digital or analog signal from the sensor. The type of thermostat depends on this. Analogue devices are in many ways similar to mechanical models, but differ more high accuracy readings and settings.

Digital thermostats are the most technologically advanced. With their help, you can set a clear algorithm for regulating the heat supply. A large number of different outdoor and indoor sensors are connected to them.

For most electronic models, control is available via a smartphone or infrared in remote mode. This allows you to set certain settings while outdoors. For example, you can turn on the heating before leaving work, and by the time you arrive, the house will already have a comfortable, warm environment.

The first two options do not reduce the degree of water permeability through the pipeline. The hydraulic resistance remains unchanged, and there are no valves or locks in the line. The device regulates the functioning of the boiler or pump without interacting directly with water.

The hydraulic resistance increases when the thermostat is mounted on a central pipe or battery. The coolant slows down its movement even with the valve maximally open. Typically, such an installation is carried out at the planning stage of the entire heating system, where all the nuances of the placement and operation of the elements are taken into account.

The third type of connection is undesirable for installation on a single-pipe heating system, since when the sensor signals, the entire coolant supply system will be shut off, and rooms far from the boiler will become noticeably cooler.

The thermostat is connected to the radiator inlet pipe through a bypass, which allows water to be redirected bypassing the battery when the controller is activated. The coolant that has not cooled down will be sent back to the boiler. Thus, less fuel will be spent on heating water.

The installation location of the temperature sensor must meet the following criteria:

• be hidden from direct sunlight;
• not be blocked by curtains or decorative elements;
• be at a height of 1.2−1.5 m from the floor;
• be away from radiators, windows and doorways.

Not correct installation may result in false readings. Because of this, there is a risk of overheating of the coolant and air in the room, which will lead to problems in the operation of the boiler.

Installing a thermostat for a gas boiler - good way optimizing the operation of the heating system, reducing the cost of maintenance and purchasing fuel, as well as reducing the wear of heating elements. The cost of the device will pay off in one winter. A variety of models allows you to choose suitable option for a specific type of room.

When the house has a heating system using a gas boiler, the optimal room temperature has to be adjusted manually. Moreover, this heating option is very sensitive to weather changes. As soon as it gets colder outside, you have to increase the temperature of the coolant. Even expensive models with a high level of automation require these actions. To save consumers from such work, manufacturers have released a thermostat for the heating boiler (temperature regulator).

Smart Device Options

Thermostat for a heating boiler (temperature regulator): how it works

The installed heating system from a gas boiler heats the room to the set temperature, regardless of the level of heat or cold inside. At the same time, a person feels well the daily weather changes if he does not change the mode manually.

Thermostat installation option

To resolve this issue in small house without a second floor, it is enough to install one thermostat in the passage room.

Note! It is necessary to correctly connect and install the device so that it works correctly and sends a signal to the boiler.

The design of a simple device includes a highly sensitive element (actuator) and a contact group with the regulator. In appearance, it is a closed bellows, inside of which there is usually a gas mixture, sometimes a liquid. This filler reacts to changes in temperature and moves the rod to close the contacts when the temperature rises, and when the temperature drops, the opposite occurs.

Schematic operation of the sensor

The thermostat performs the task of turning the heating system on and off when the set temperature is reached autonomously, without human intervention. Simple scheme includes two contacts, the wires of which are routed to the boiler and connected to the valve.

Equipment connection option

When the device is turned on, the last element is in open state. When a short circuit occurs, the fuel supply to the burner is cut off and the flame stops. In the reverse process, fire occurs from the igniter.

Gas wall-mounted double-circuit boiler with closed camera combustion. What are its features, advantages and disadvantages, how to choose and install it correctly - read in this review.

Types of home temperature sensors for heating boilers

Thermostats for heating boilers (temperature controllers) come in several varieties:

• Wired. The key to correct operation is the correct installation of conductors. This is necessary for uninterrupted communication of the equipment with the boiler.

• Wireless. Change information is sent via radio signal temperature regime in the apartment. The device consists of two blocks, one of which is mounted in the room, the other on the boiler itself. The controller unit has a liquid crystal display and a keyboard.

Remote type of sensor

Let's look at each option in more detail, with approximate cost and a review of several models.

Mechanical (wired) thermostat

A mechanical thermostat for a heating boiler has its own characteristics; the price of the models varies as well as the characteristics. Such a device must be pre-set to achieve the optimal room temperature. This difficult process, so it’s better to contact a specialist.

Small mechanical model

Any model includes two parts: a thermal head and a valve. The operation of the device is influenced by:

• frequent ventilation;
• bright sunlight coming through the windows;
• sudden change in weather.

Installation must be done only in a horizontal position, and you must choose a place where there are no objects blocking the device or direct sunlight. Modern models have small dimensions that can be installed in a small niche.

Installation option near gas equipment

The installation itself will not take much time. If you turn off the heating, then you need to turn the thermostat knob. This will protect the device from sediment formation.

Here is an example of two popular mechanical thermostat models:

Thermostat for heating boiler (temperature regulator)

The thermostat for a heating boiler (temperature regulator) allows you to maintain the optimal temperature in a room heated by a gas boiler. We will look at this in more detail in the article.

Thermostat for the boiler - we trust the weather in the house to automation

The thermostat for the boiler not only saves us money by reducing the volume of gas, but also increases the service life of the equipment. Such a device is definitely worth having in service, but what should it be like?

How does the operation of a gas boiler with a thermostat change?

The variety of heating boilers today is simply amazing. They have many modifications, work from various types fuel. But it is very important to ensure proper control of such units. This will reduce energy consumption, and therefore reduce costs, extend the life of equipment and achieve an optimal microclimate in each room. All these tasks are possible with special temperature controllers.

Boiler temperature regulator

Gas boilers have a cyclic circuit and turn on after the temperature of the water or other coolant drops to a certain value. At the same time, the rate of heating and cooling of the water in the system and the air in the room is different. Often the room is still at the required temperature, but the coolant in the system has already cooled down, so the gas boiler burner turns on. This leads to undesirable changes in the microclimate, unnecessary fuel consumption and wear and tear of heating equipment. It is inconvenient to regulate this process manually. Having installed special device, you will avoid such problems.

Device for regulating the temperature of a gas boiler

These devices are equipped with a sensor that measures the temperature in the room. You ask it yourself optimal values, and as soon as the house becomes cooler, the device immediately turns on the pump and starts the gas boiler. After exceeding a preset threshold, the heating equipment is automatically switched off.

What kind of thermostat can be used for a boiler?

Today, the choice of such devices is quite large; you can find wired and remote models, programmable and simple, mechanical or electronic. Depending on the type and number of functions, the cost will vary. Now let's look at the main differences between existing thermostats.

Mechanical thermostat for gas boiler

The simplest and cheapest, of course, are mechanical models, and this is precisely their main advantage. Such equipment is simple to operate and relatively easy to repair. And the likelihood of failure is reduced to a minimum. The more expensive ones include electronic equipment, which is also very unpretentious.

But programmable temperature regulators- already complex devices. To install them, configure them correctly and change parameters, you will have to tinker a little. However, having done these operations 1-2 times, then you will easily cope with such tasks. They provide more precise control and have many functions. For example, in some models you can set the desired temperature in “day” and “night” modes or program the heating system depending on the days of the week. The remote control is very convenient. True, all this will affect the cost of the device.

Programmable thermostat for gas boiler

If you prefer wired thermostats, pay attention Special attention installation. It is important to ensure uninterrupted communication between the control device and heating equipment. Wireless regulators provide starting and shutting down of a gas boiler using a radio signal coming from the control point to the executive one. The first is installed in the selected room, and the second directly on the boiler.

Is it difficult to install the sensor?

Maximum efficiency of thermostats for gas boilers is possible only after proper installation. What's so complicated about this? Let's go over the instructions.

How to install a thermostat for a gas boiler - step-by-step diagram

Step 1: Selecting a Thermostat

It is advisable that the thermostat be from the same company as the boiler. This will greatly simplify the installation process. If you decide to use wired sensors, you need to install them before you start repair work, otherwise you will have to damage the finish in order to install the cable. Before purchasing a device, it is also necessary to calculate the heated area, this will help avoid equipment downtime.

Step 2: Select a location

If we are talking about remote devices that are installed anywhere, then it is important to choose the right room. It is advisable to choose the most visited place, for example, the living room. Sometimes it is placed in the most cold room, it all depends on the needs. The sensor must be located in an open space. It should be prevented from cluttering it with furniture, curtains and other household items. Also, placement in proximity to electrical and heating appliances is not allowed. It is also undesirable for the device to be exposed to sunlight or drafts. If valves with thermal heads are installed on the heating radiators in the room where the thermostat control sensor is installed, then they must be replaced with ordinary ones with manual adjustment. Otherwise, they may distort the readings of the device, and the system will not work correctly.

Installation of a boiler thermostat control sensor

Step 3: Connection

First, you need to carefully read the attached instructions and diagram and act only according to the manufacturer’s recommendations. You can connect the device either using the terminal on the gas equipment or by connecting a cable. It all depends on the chosen model. The control element must be located at a height of 1.5 meters from the floor and on interior wall. This is due to the fact that warm air is located at the top, the cold, on the contrary, is concentrated at the bottom, and the outer walls are colder. Before connecting, be sure to de-energize the object, and then connect zero, phase and ground.

Step 4: Setup

Now you need to set the necessary parameters. Usually there are buttons on the front panel of the device, with their help the necessary settings are made. In this case, the technical documentation of the device will again be useful, which describes the programming process in detail. The heating step and temperature are set. There is also a delay function for the thermostat. For example, when there are short-term drafts, the device detects them and does not turn on. More expensive models may have a number of other options.

Programming the boiler thermostat

It is recommended to set the temperature to 20 degrees. In homes with small children, the elderly and people with disabilities, it is increased to 22 °C. But in order to save money at night, you can set it a few degrees lower. To increase efficiency, be sure to properly insulate your home..

If you are in doubt about whether you need to purchase expensive equipment, you can always test the effect on cheaper and simpler mechanical models. Avoid device downtime and change batteries promptly.

Thermostat for a boiler - what is it, features of choice for gas equipment? Video

Thermostat for a gas boiler and its role in family budget. Difficulties in choosing a device, installation and adjustment features. Video of thermostat installation

Thermostat for heating boiler

In order to uniformly heat the room and rationally use electricity, a special device for the heating boiler was developed and implemented - a thermostat. Principle of operation different models The equipment is very similar, but there are important differences. For example, a heat signal can come to the coolant from sensors that measure the temperature indoors or outdoors. In this article we will talk about the characteristics of popular thermostats for heating boilers, and find out what parameters to choose them by.

Operating principle and device

Typically, the operating modes of a heating boiler are regulated by sensors that measure the temperature of the coolant. In fact, this is not always convenient, since the regulator, set to a certain liquid temperature, gives the boiler a command to turn on if the coolant has cooled down. But this does not take into account the temperature inside the room, which changes at different times of the year. That is, in the spring the batteries will work exactly the same as in the winter, while the thermostat, which measures the temperature in the heated room, allows you to turn the boiler on and off depending on this data.

The thermostat is designed in such a way that it has a built-in temperature sensor, which is placed in the room where they want to measure the average temperature. This must be done in such a way that the sensor is not affected by heat directly from the battery. Receiving information about the temperature in the room, the regulator gives commands to the heating boiler.

The device measures the temperature and turns off the system heating as necessary. When the temperature drops to the set thermostat readings, the boiler turns on again.

Types of thermostats

Determining the installation location and characteristics of the temperature sensor for the heating boiler must be done at the system design stage. It is necessary to first calculate the heat supply parameters and, based on these data, make a choice individual parts systems.

The thermostat for a heating radiator is no exception. But besides technical characteristics It is worth considering performance qualities:

• precision control. This quality allows you to understand what changes in the temperature of the coolant will lead to the operation of the device;
• thermostat automation. It helps you understand how often you will need to manually adjust the settings to make the system function normally;
• additional mode. Almost every model can be configured for cyclic operation daily or for the whole week - additional settings allow you to work strictly in accordance with the specified parameters;
• installation features. It is necessary to pay attention to whether the thermostat can be installed in any position, since some models are installed strictly in one position.

Let's talk about the most basic types of heating boiler thermostats, their operating qualities and technical data.

Mechanical device

The easiest option to control the heating of the main line and radiator section is to install a mechanical thermostat for the heating boiler. The design of this option is not particularly complicated - it consists of a shut-off valve and a mechanical control unit.

This thermostat is filled with a coolant liquid, which, when heated, expands and presses on the rod, which limits the movement of the coolant in the line. The reduced working diameter of the pipe helps make the heating less intense, which leads to the cooling of the batteries. Mechanical thermostats for heating boilers have several features, and before making a choice, you need to familiarize yourself with them:

• first of all, you need to calculate the parameters of the heating boiler regulator specifically for your system;
• the installation of the thermostat on the radiator must be done so that the high temperature does not affect the control element and does not make incorrect adjustments;
• The thermostat can be installed on both the inlet and outlet pipes. If it is necessary to control the heating of the radiator, the thermostat is installed in front of it. To limit the flow of liquid from the battery, install a thermostat after the radiator.

Two-way and three-way regulator

These are multifunctional universal devices. The main difference from the mechanical version is the absence of a control component, which depends on the temperature of the coolant.

A mechanical thermometer for a heating boiler can only work in its local area. It cannot take into account the ambient temperature.

Modern automatic valves are free from this drawback thanks to their design features, servomechanism and special crane.

The servomechanism can be connected to any external control unit. This role can be played by temperature sensors or special programmers. External data regulates the shut-off valve rod, which is necessary to regulate the flow of liquid in a given section of the pipeline in accordance with the specified parameters.

Such valves, in addition to performing the function of a thermostat for a heating boiler, can also be used in other heat supply systems:

• collector heating. Adjust the coolant in specific area systems;
• warm floor. Included in the design of the mixing unit.

If you need to install a thermostat in a heating pump, then two and three-way valves are the best option.

Electronic thermostat for heating

To make the heating system work autonomously, it is recommended to install an overhead electronic thermostat for the heating boiler. Most often, such thermostats are not installed directly into the main line, but are taken outside and mounted anywhere in the room.

Simplified designs of room thermostats for heating boilers are equipped with one remote temperature sensor and a control element. It is installed on a certain section of the main line, and with its readings it adjusts the operation of the control valve or boiler. But for comfortable and efficient operation, more suitable complex designs overhead thermostats for the heating system, which have the added function of a daily or weekly programmer.

Before choosing a thermostat for your heating boiler, you should familiarize yourself with the options available on the market:

1. With timer. This additional option helps make home heating dependent on the time of day. This thermostat is suitable for a small room.
2. With bimetallic spiral. Hot air acts on the spiral, it expands and the contact closes. As a result, it triggers adjusting mechanism, and a command is given to the valve to open or close.
3. Programmable. In this embodiment, the mechanical part of the heating boiler thermostat is supplemented the electronic unit management. This model is convenient for installing autonomous heat supply.

Thermostat prices

Making a choice in favor of cheap products does not mean making the right choice. Moreover, everyone knows that from high-quality and proper operation components and elements of the heating system will depend on both maintenance-free operation of boiler equipment and energy savings. Failure of the thermostat settings will lead not only to damage to the sensitive elements of the circuit, but also to disruption of the microclimate in the room.

The difference in price, as well as the range of thermostats, is very large. Professionals do not recommend buying a thermostat for less than 1,700 rubles, which is about the cost of a high-quality element equipped with electronics. Well, the cost of more functional, universal models can start from 12,000 rubles.

Conclusion

The best option for placing a thermostat for a heating boiler would be the living room, as it is the most visited room in the house. Think carefully when choosing a thermostat for your heating boiler; this is necessary in order to make heating at home high-quality and comfortable.

Thermostat for heating boiler

Thermostat for a heating boiler For the purpose of uniform heating of the room and rational consumption of electricity, a special device for the heating boiler was developed and implemented -

Thermostat for a heating boiler: principle of operation, types, connection diagrams

Automation in the heating system allows you to more accurately control the temperature in heated rooms and save on fuel. By installing a thermostat for the heating boiler in the house, the cottage owner increases the efficiency of the boiler equipment by 20–30% and greatly simplifies its maintenance.

There are several types of thermostats, and each of them has its own installation location. You need to choose the device wisely.

How does a heating thermostat work?

A conventional heating system with water as a coolant consists of heating equipment or a connection unit to centralized network, pipes internal wiring and radiators. To regulate the volume of heat coming from it into the rooms, you have to either constantly monitor the boiler or regularly close/open the valves on the radiators.

At the same time, the inertia of such a system does not allow maintaining the desired temperature throughout the day at the set level. If you put more firewood into the stove or supply gas to the boiler, the coolant in the pipes will heat up more, and it will also release more heat through the radiators.

This is good at low temperatures outside. But with sudden warming outside, the heat in the house becomes unbearable. The fuel is already in the firebox, and the water has already heated up, there is no way to get rid of the heat. Plus the boiler continues to work. Without a thermostat in the system, you have to turn it off manually. You can, of course, open the windows for ventilation and let out the heat, but then the fuel bills for your home boiler room will definitely ruin you.

The conclusion suggests itself: a heating thermostat simplifies living and makes it as comfortable as possible.

The thermostat for the heating system consists of:

• temperature-sensitive sensor (element);
• tuning unit;
• control module;
• electromagnetic relay or mechanical valve.

In the most simple models there is no control unit. Everything happens due to pure mechanics and changes in the physical properties of the temperature-sensitive element. These thermostats do not require power supply. In terms of efficiency and accuracy of system adjustment, they are inferior to electronic devices, but they are non-volatile. If there are problems with the voltage in the network, they will definitely not stop working.

The operating principle of the thermostat is as follows:

1. Using the control unit, the desired temperature is set.
2. When the required parameters are reached, the sensor is triggered, which leads to the boiler shutting down or shutting down shut-off valve in heating pipes.
3. After the air temperature in the room drops, the boiler equipment or heaters turn back on.

Module electronic control allows you to set not just one temperature indicator, but several for each time of day separately. Plus, if such a unit is available, it is possible to install an additional temperature sensor outside and link the functioning of the thermostat to the data from it.

The simplest thermostat is shut-off valves with a temperature sensor, standing on the pipe near the battery. Upon reaching desired temperature the valve closes and reduces the coolant current. And when cooling room air it opens again, causing the volume of incoming heat to increase.

More complex and advanced models require wireless sensors and control units. All communication between individual elements occurs through a radio channel. In this case, wires are not laid, which has a positive effect on aesthetic side placement of such thermostats in the room.

Types of thermostats for boilers

The main difference between thermostats is different types of temperature-sensitive sensors. Some are installed on the heating pipe, others inside it, and others are mounted on the wall. Some are designed to measure air temperature, and the second - coolant.

The choice of thermostat model depends on:

• boiler type;
• heating system wiring diagrams;
• availability of free space;
• required functionality.

Many modern boilers pre-designed for connecting thermostats to them. Moreover, the manufacturer of boiler equipment immediately writes down all the nuances of this installation in the technical data sheet.

Ideally, the thermostat should regulate the operation directly heating device, that is, the supply of fuel to it. This is the most efficient connection scheme in terms of fuel economy. In this case, the energy carrier will be burned exactly as much as the heat required.

But such a thermostat can only be installed on a gas or electric heating unit. If the boiler is solid fuel, then a thermostat with a mechanical valve, which is mounted on the pipe, will help regulate the room temperature.

Regulators installed on batteries are designed to shut off the water supply if the temperature in the room or coolant is too high. In this case, the boiler stops working a little later, when its own internal temperature sensor, preventing equipment overheating.

Group #1: mechanical

The operation of a mechanical temperature sensor is based on a change in the characteristics of a material when its temperature changes. This is an easy-to-use, budget-friendly, fairly effective and completely power-independent option. It is designed for installation on pipes of a water heating system to regulate the flow of coolant.

The following substances are used in mechanical thermostats as a substance that responds to temperature changes:

When the liquid is heated, the gases expand, which leads to their pressure on the shut-off valve stem. When the temperature drops, they compress, the constipation is returned by a spring, and the heated water again flows through the pipes into the heating radiators.

Such thermostats are characterized by poor sensitivity and a large adjustment error. They only work when the temperature rises by 2 degrees or more. Plus, over time, the bellows filler loses its characteristics, the numbers on the handle for setting the required temperature parameters and the real degrees begin to diverge.

These thermostats are quite large in size. The vast majority of them are designed to measure the temperature of the water in the batteries, and not the air in the room. It is often difficult to precisely adjust them the way the home owner wants.

Group #2: electromechanical

These thermostats operate on principles similar to their purely mechanical counterparts. Only a metal plate is used here as a heat-sensitive element. When heated, it bends and closes the contact, and when cooled, it returns to its original position and opens the circuit. And through this circuit a signal is sent to the burner control unit.

Another option for an electromechanical thermostat is a device with a sensor in the form of two plates made of different metals. In this case, the heat-sensitive element is installed directly into the firebox of the solid fuel boiler.

At high temperatures, a potential difference occurs between the plates, affecting the electromagnetic relay. The contacts in the latter alternately open and close. As a result, air injection into the combustion chamber is turned on/off.

Group #3: electronic

This type of thermostats for hot water boilers belongs to the energy-dependent category. Such devices have a remote temperature sensor that monitors the room temperature and a full-fledged control unit with a display. For electric boilers, such thermostats are a mandatory addition. Without them, electric heaters will work without stopping, heating the air or coolant too much.

An electronic thermostat has two main elements:

The first measures the temperature, and the second controls it and issues signals to increase/decrease the supply of thermal energy to the room. The sensor can send an analog or digital signal to the controller. In the first case, the thermostat’s capabilities are similar to its mechanical counterpart, only it greatly exceeds it in the accuracy of temperature measurements.

Digital thermostats are the pinnacle of development of these devices. They allow you to regulate heat supply according to a preset algorithm. Plus, you can connect many more sensors to them, located both in rooms and outside.

Many electronic thermostats have the ability remote control via infrared or cellular communication. This allows you to regulate the room temperature not only using the remote control in the room, but also from any point outside it. For example, while still leaving work, you can send a signal to heat the room air to comfortable parameters, and when you arrive the house will delight you with comfort and warmth.

Connection diagrams

All methods of connecting a thermostat to a heating system are divided into three connection options:

1. Directly to the boiler.
2. To the circulation pump.
3. On the pipe supplying coolant to the radiator.

The first two schemes eliminate the deterioration in the throughput of the heating pipeline. No additional locks are placed in it, and the hydraulic resistance of the entire system does not change. The thermostat here only controls the operation of the pump or boiler; it “does not come into contact” with water.

When installing a thermostat on a battery or common pipe with several radiators, the hydraulic resistance, on the contrary, increases. Even when fully open, the thermostat valve slightly slows down the flow of coolant. Ideally, the boiler piping project should be carried out immediately, taking into account all thermostatic and other devices.

If the water heating system in the house is made of a single pipe, then it is better to immediately abandon the third option. When the temperature sensor is triggered, the valve will immediately shut off the entire radiator line in several rooms, and then you can immediately forget about comfort in rooms far from the boiler.

The thermostat should be connected to the radiator input via a bypass. So, when triggered, it will redirect the coolant flow bypassing the battery. In this case, the water will return uncooled back to the boiler. The latter will stop heating it, thereby reducing the consumption of gas fuel or electricity.

The temperature sensor must be installed:

• in a place where there is no direct sunlight;
• away from cold bridges, drafts and rising heat flows from radiators;
• so that it is not covered by decorative screens or curtains;
• at a height from the floor within 1.2–1.5 meters.

If the sensor is installed incorrectly, the thermostat will produce false signals. This can lead to overheating not only of the air in the room, but also of the coolant in the system. And in the second case, it won’t be long before there are problems with the boiler.

Connecting a room thermostat to a gas boiler in all its nuances:

Wall thermostat review:

Technology for incorporating a contact thermostat into a system with a circulation pump:

An addition to the heating boiler in the form of a thermostat is great way save on home heating, increase living comfort and reduce wear and tear on equipment heating the coolant. The money spent on thermostats pays off in one winter season. In this case, you can choose either a simple mechanical option with manual control or a more advanced device with a programmer.

Purpose and connection diagrams of a thermostat for a heating boiler

Description of the types of thermostats for heating boilers. The principle of operation of the thermostat and the diagram of its connection to the heating system. Installation Tips

The standard package of heating equipment necessarily includes a heating temperature regulator for the boiler, which turns off the gas supply to the burners if the degree of heating of the coolant has reached the set value, and in electric boilers stops the power supply. The disadvantage of this method of adjustment is the complete lack of response to the influence of weather conditions on the temperature in the home, which the thermostat installed in the boiler is not able to track. Such simplest method adjustment is called indirect.

For comfort and coziness in a room, a constant degree of warmth is necessary, regardless of external factors. Regulating the heating of the coolant based on the air temperature in the room is called direct control. In small private houses direct regulation provides a room thermostat for a gas boiler installed in a walk-through room. There are complex heating systems with beam wiring and distribution manifold. Such systems allow automatic temperature control in each room separately.

There are two types of thermostats for heating boilers. These are mechanical and electronic devices. Let's look at the principle of their operation in more detail.

Mechanical thermostat

The main element of a simple room thermostat is gas membrane, which controls the thermostat actuator. The membrane is filled with gas, which changes its volume, moving its side walls under the influence of air temperature. This movement triggers a mechanical device that turns the control contacts on or off. This is how a simple mechanical thermostat works.

Electronic thermostat

Electronic thermostats are much more complex. They can be wired or wireless, programmable for a day or a week. If you buy a room thermostat for a heating boiler, the price of which will depend on the complexity of the device, then even the simplest thermostat gives gas savings of 10 - 12%, and any thermostat will pay for itself within a few months. You can read more about automation for boilers.

Connecting the thermostat to the boiler

There are two types of connection of temperature controllers to heating units. The simplest is a wired connection. The standard boiler has a special connector for connecting an external thermostat. It is usually closed with a plug, and the contacts are connected by a jumper. When connecting, the jumper is removed, and the wire with a connector from the thermostat is connected to the boiler. In order to get rid of wires you need to buy and install a wireless thermostat.

To maintain a stable temperature in the house, you need not only to buy a thermostat for a gas boiler, but also to correctly adjust the thermostats on the boiler and in the room. The main thermostat on the boiler in this case will perform a protective function against overheating, i.e. turn off the boiler when it reaches maximum temperature coolant. The adjustment consists of setting the temperature values ​​for turning on and off the room thermostat, at which they would operate in a temperature range lower than the maximum permissible temperature coolant.

Knowing the principle of how to adjust a gas boiler after installing a room thermostat will increase the efficiency of the heating system.

Capabilities of Ferroli electric boilers

As an example, let’s look at how automatic temperature control is organized for an electric boiler from the Italian concern Ferroli. The device is supplied with a programmable control unit, a room thermostat and an outdoor temperature sensor. Therefore, you can find out which programmable thermostat is suitable for the Ferroli electric boiler by carefully reading the attached instructions. The instructions for the boiler describe in detail the process of programming and connecting the Ferroli analog room thermostat. Therefore, before buying a thermostat for a heating boiler, you need to check with the store manager whether the device is compatible with the Ferroli control unit.

Even the simplest coolant temperature regulator allows you to automatically maintain a comfortable room temperature and regulate fuel consumption.

Sophisticated programmable devices can maintain different microclimates for individual rooms. They can be programmed for a day, a week, a month. For example, reduce the temperature in the room at night or maintain a lower temperature while the owners are away.

For gas boilers, programmable thermostats save gas, and for electric boilers, they save electricity. Their main advantage is a significant set additional functions that will provide comfort and coziness in the home.

Automation in the heating system allows you to more accurately control the temperature in heated rooms and save on fuel. By installing a thermostat for the heating boiler, the owner of the cottage increases the efficiency of the boiler equipment by 20–30% and greatly simplifies its maintenance.

We will talk about the types of thermostats used in practice, the rules for their location and connection features. The article we have proposed describes in detail the options and diagrams for connecting devices. Taking into account our advice, you can choose the device wisely and install it if desired.

A conventional heating system with water as a coolant consists of heating equipment or a connection point to a centralized network, internal wiring pipes and radiators.

To regulate the volume of heat coming from it into the rooms, you have to either constantly monitor the boiler or regularly close/open the valves on the radiators.

At the same time, the inertia of such a system does not allow maintaining the desired temperature throughout the day at the set level. If you put more firewood into the stove or supply gas to the boiler, the coolant in the pipes will heat up more, and it will also release more heat through the radiators.

This is good at low temperatures outside. But with sudden warming outside, the heat in the house becomes unbearable. The fuel is already in the firebox, and the water has already heated up, there is no way to get rid of the heat. Plus the boiler continues to work.

Without a thermostat in the system, you have to turn it off manually. You can, of course, open the windows for ventilation and let out the heat, but then your fuel bills will definitely ruin you. The conclusion suggests itself: a heating thermostat simplifies living and makes it as comfortable as possible.

The thermostat for the heating system consists of:

• temperature-sensitive sensor (element);
• tuning unit;
• control module;
• electromagnetic relay or mechanical valve.

In the simplest models there is no control unit. Everything happens due to pure mechanics and changes in the physical properties of the temperature-sensitive element.

These thermostats do not require power supply. In terms of efficiency and accuracy of system adjustment, they are inferior to electronic devices, but they are non-volatile. If there are problems with the voltage in the network, they will definitely not stop working.

The operating principle of the thermostat is as follows:

1. Using the control unit, the desired temperature is set.
2. When the required parameters are reached, the sensor is triggered, which leads to the boiler turning off or the shut-off valve in the heating pipes closing.
3. After the air temperature in the room drops, the boiler equipment or heaters turn back on.

The electronic control module allows you to set not just one temperature indicator, but several for each time of day separately. Plus, if such a unit is available, it is possible to install an additional temperature sensor outside and link the functioning of the thermostat to the data from it.

Depending on the type of device, the thermostat is connected directly to the boiler to regulate its operation or at the inlet to the radiator to control the volume of coolant supply

The simplest thermostat is a shut-off valve with a temperature sensor, located on a pipe near the battery. When the desired temperature is reached, it closes and reduces the coolant current. And when the room air cools, it opens again, resulting in an increase in the volume of incoming heat.

More complex and advanced models require wireless sensors and control units. All communication between individual elements occurs through a radio channel. In this case, wires are not laid, which has a positive effect on the aesthetic side of placing such thermostats in the room.

Types of thermostats for boilers

The main difference between thermostats is different types of temperature-sensitive sensors. Some are installed on the heating pipe, others inside it, and others are mounted on the wall. Some are designed to measure air temperature, and the second - coolant.

The choice of thermostat model depends on:

• boiler type;
• heating system wiring diagrams;
• availability of free space;
• required functionality.

Many modern boilers are pre-designed to connect thermostats to them. Moreover, the manufacturer of boiler equipment immediately writes down all the nuances of this installation in the technical data sheet.

If selected electronic model thermostat, it is best to give preference to the most efficient one - the one recommended by the boiler developer

Ideally, the thermostat should regulate the operation of the heating device itself, that is, the supply of fuel to it. This is the most efficient connection scheme in terms of fuel economy. In this case, the energy carrier will be burned exactly as much as the heat required.

But such a thermostat can only be installed on or. If so, then a thermostat with a mechanical valve, which is mounted on the pipe, will help regulate the room temperature.

Regulators installed on batteries are designed to shut off the water supply if the temperature in the room or coolant is too high. In this case, the boiler stops working a little later, when its own temperature sensor inside is activated, preventing overheating of the equipment.

Group #1: mechanical

The operation of a mechanical temperature sensor is based on a change in the characteristics of a material when its temperature changes. This is an easy-to-use, budget-friendly, fairly effective and completely power-independent option. It is designed to be installed on pipes to regulate flow.

The following substances are used in mechanical thermostats as a substance that responds to temperature changes:

• liquid.

When the liquid is heated, the gases expand, which leads to their pressure on the shut-off valve stem. When the temperature drops, they compress, the constipation is returned by a spring, and the heated water again flows through the pipes into the heating radiators.

They are characterized by low sensitivity and large adjustment errors. They only work when the temperature rises by 2 degrees or more. Plus, over time, the bellows filler loses its characteristics, the numbers on the knob for setting the required temperature parameters and the actual degrees begin to diverge.

These thermostats are quite large in size. The vast majority of them are designed to measure the temperature of the water in the batteries, and not the air in the room. It is often difficult to precisely adjust them the way the home owner wants.

Group #2: electromechanical

These thermostats operate on principles similar to their purely mechanical counterparts. Only a metal plate is used here as a heat-sensitive element.

When heated, it bends and closes the contact, and when cooled, it returns to its original position and opens the circuit. And through this circuit a signal is sent to the burner control unit.

The electromechanical thermostat requires power supply; it controls the valves or burners in the boiler that regulate the flow of coolant using electrical signals.

Another option for an electromechanical thermostat is a device with a sensor in the form of two plates made of different metals. In this case, the heat-sensitive element is installed directly into the firebox of the solid fuel boiler.

At high temperatures, a potential difference occurs between the plates, affecting the electromagnetic relay. The contacts in the latter alternately open and close. As a result, air injection into the combustion chamber is turned on/off.

Group #3: electronic

This type of thermostats for hot water boilers belongs to the energy-dependent category. Such devices have a remote temperature sensor that monitors the room temperature and a full-fledged control unit with a display.

For electric boilers, such thermostats are a mandatory addition. Without them, electric heaters will work without stopping, heating the air or coolant too much.

In the vast majority of cases, boilers and boilers operating on electricity are equipped with thermostats at the factory.

An electronic thermostat has two main elements:

1. Temperature sensor.
2. Microcontroller.

The first measures the temperature, and the second controls it and issues signals to increase/decrease the supply of thermal energy to the room. The sensor can send an analog or digital signal to the controller. In the first case, the thermostat’s capabilities are similar to its mechanical counterpart, only it greatly exceeds it in the accuracy of temperature measurements.

Digital thermostats are the pinnacle of development of these devices. They allow you to regulate heat supply according to a preset algorithm. Plus, you can connect many more sensors to them, located both in rooms and outside.

Many electronic thermostats have remote control capabilities via infrared or cellular. This allows you to regulate the room temperature not only using the remote control in the room, but also from any point outside it.

For example, while still leaving work, you can send a signal to heat the room air to comfortable parameters, and when you arrive the house will delight you with comfort and warmth.

Electronic devices intended for automatic adjustment qualitative and quantitative characteristics of the coolant are a mandatory component. We recommend that you familiarize yourself with their device.

Connection diagrams

All methods of connecting a thermostat to a heating system are divided into three connection options:

1. Directly to the boiler.
2. To the circulation pump.
3. On the pipe supplying coolant to the radiator.

The first two schemes eliminate the deterioration in the throughput of the heating pipeline. No additional locks are placed in it, and the hydraulic resistance of the entire system does not change. The thermostat here only controls the operation of the pump or boiler; it “does not come into contact” with water.

When installing a thermostat on a battery or a common pipe with several radiators, the hydraulic resistance, on the contrary, increases. Even when fully open, the thermostat valve slightly slows down the flow of coolant.

Ideally, the boiler piping project should be carried out immediately, taking into account all thermostatic and other devices.

Thermostats should only be installed into existing heating pipes as a last resort. maximum efficiency their use can only be achieved if they are included in the system at the design stage

If the water heating system in the house is made according to, then it is better to immediately abandon the third option. When the temperature sensor is triggered, the valve will immediately shut off the entire radiator line in several rooms, and then you can immediately forget about comfort in rooms far from the boiler.

The thermostat should be connected to the radiator input via. So, when triggered, it will redirect the coolant flow bypassing the battery. In this case, the water will return uncooled back to the boiler. The latter will stop heating it, thereby reducing the consumption of gas fuel or electricity.

The temperature sensor must be installed:

• in a place where there is no direct sunlight;
• away from cold bridges, drafts and rising heat flows from radiators;
• so that it is not covered by decorative screens or curtains;
• at a height from the floor within 1.2–1.5 meters.

If the sensor is installed incorrectly, the thermostat will produce false signals. This can lead to overheating not only of the air in the room, but also of the coolant in the system. And in the second case, it won’t be long before there are problems with the boiler.

Conclusions and useful video on the topic

There should not be any particular difficulties with installing the thermostat. You just need to choose it correctly for a specific heating system. And the selected video materials will definitely help you with this.

Video #1. Connecting a room thermostat to a gas boiler in all its nuances:

In this case, you can choose either a simple mechanical option with manual control or a more advanced device with a programmer.

Would you like to tell us how a boiler with a thermostat works in your country house? Do you have information that will be useful to site visitors? Please write comments, ask questions, post photos related to the topic of the article in the block below.

An integral part of the heating system modern house is the equipment automatic regulation. Among owners of houses, cottages and apartments, room thermostats and programmers are becoming popular, which allow you to control energy consumption by maintaining comfortable temperature.

Types of thermal control in heating systems

Regarding the principle, thermal regulation is carried out in three types:

• by coolant temperature;
• by air temperature in the room;
• on heat loss of a home.

Coolant temperature regulation is relevant for houses with an area of ​​less than 60 sq.m. This method is used in most modern homes. Based on the information received from the temperature sensor, the operation of the boiler burner is stopped or resumed. Regulation is carried out by setting the desired temperature mark on the boiler equipment panel.

Regulation of indoor air temperature is acceptable for dwellings with an area of ​​60-350 sq.m. Manufacturers produce thermostats of various modifications - with the ability to install programs, wired, wireless, etc. Using a thermostat can reduce energy costs by up to 25%. In premises with an area of ​​more than 350 sq.m. professionals recommend installing weather-sensitive automation. In this case boiler equipment will replenish heat losses Houses. A special sensor reads the temperature outside and regulates the operation of the boiler based on these indicators.

Features of room thermostats

Before you buy a room thermostat for a gas boiler and an electric boiler, you should carefully understand the mechanics of such a device. A room thermostat is a device for automatically regulating the operation of boiler equipment in accordance with the air temperature specified by the consumer. The thermostat is equipped with temperature sensors, which are installed in an area away from the direct influence of heating devices. Information from temperature sensors is fed to the thermostat. A room thermostat monitors the air temperature in your home. The equipment does not allow the room to overheat or overcool. Thanks to this, energy is significantly saved and a comfortable microclimate is created in the home.

A room thermostat is designed to maintain a set room temperature relative to a pre-programmed schedule. Regulators can control the operation of boiler equipment, heating radiators, water heated floors and other heating devices.

Depending on the heating device connected, room thermostats have some design features. For example, a thermostat for boiler equipment must have a relay output of the “dry contact” type. For electric heated floors, thermostats with a power relay are used.

Types of thermostats

Regarding connection, thermostats are divided into two classes:

• wired;
• wireless.

A wired thermostat uses a cable to transmit the signal. The cable also supplies power voltage. Wired thermostats are different affordable price and are often used on sites where the fine finishing, there is a need to lay a cable from the heating device.

In those houses where the renovation is completely completed, it is more rational to use wireless thermostats. The devices supply a control signal to a slave receiver via a radio channel. Wireless devices consist of two functional blocks. The first is represented by a controller with an LCD screen and a keyboard for ease of operation. The second block is the actuator. The first block is placed in any convenient place in the home at a distance of up to 50 m from the second receiver block. The second unit is installed directly next to the boiler and connected to it.

The wireless room thermostat for the boiler has an operating range of up to 30 meters. In the event of signal loss, the built-in microprocessor controller is able to operate based on data stored over the last 24 hours. The accuracy of temperature control of the device is within 0.2 °C. The control here is simplified to two function buttons (increase and decrease temperature).

According to their functional component, thermostats can be programmable or non-programmable. By programming the thermostat, you can set the temperature for each day at specific time intervals. This temperature change schedule will allow you to significantly save on heating costs. Non-programmable devices maintain a constant temperature. They are able to manually switch day/night modes or support the anti-freeze function.

Programmable thermostats come with a variety of useful features. For example, the “vacation” option provides energy savings by reducing the temperature when people are away for up to several days. After disabling the function, the thermostat returns to normal operation.

Most modern devices are digital wireless thermostats. They connect with external devices via a radio signal at a frequency of 868 MHz. Due to wireless technology, devices become mobile - they can be moved to any location. comfortable spot no need for gaskets electrical cables. To organize complex configuration, use zonal regulation. In this case, the room is divided into separate temperature zones, and an individual program is set for each of them.

Benefits of using a room thermostat:

• possibility of remote control of boiler equipment;
• ability to change heating and cooling modes;
• automatic maintenance of a comfortable temperature in the home;
• saving up to 40% coolant.

Installation Requirements

The room thermostat should be located in an area with good air circulation. It is mounted on an internal wall, at a height of about 1.5 m from the floor. The thermostat should not be placed in a drafty area, near heating devices, or in places exposed to direct sunlight. Places with high level moisture condensation. Since wireless devices are radio frequency, they are placed in open spaces. The devices must be installed at a distance of at least 30 cm from any metal objects and electrical equipment.

Room thermostats for boilers

The price of boiler equipment depends on the complexity of the development. Main factors influencing cost:

● installation method (the simpler, the more expensive);

● control method (remote or wired);

● adjustable temperature range;

● complexity of automation (self-adaptation or custom mode).

Assortment of thermostats in the SantekhMarka online store

Among the variety of devices, CEWAL devices have become popular. The brand produces room thermostats of mechanical and electric type. They regulate temperature conditions in heating and cooling systems. Thermostats are capable of controlling boiler equipment, circulation pumps, etc.

Room thermostats from Salus are no less in demand. In the manufacturer's assortment you can find thermostats for boiler control; circulation pump; temperature hot water; warm floor. The most popular and inexpensive are thermostats from the manufacturer Salus (Salus) and Valtec (Valtek).

The Salus thermostat, made in China, has earned the trust of customers in many countries around the world. Can be either wired or wireless. Salus is easy to install due to the ready-made panel components.

The Valtec thermostat not only performs temperature control functions, but also works as a component of the heating equipment safety system. The range of Valtek products can satisfy any customer’s whim.

To reduce the cost of electricity or gas, you should take the opportunity and buy the devices described. Such an innovation will provide reasonable cost savings, and Santech Marka will help you make the right choice.