Connecting a room thermostat to a gas boiler: thermostat installation guide

Saving electricity and gas, a stable comfortable temperature, a minimum of time spent on adjusting heating equipment - all these are not whims, but well-founded requirements for a properly organized heating process.

Therefore, connecting a room thermostat to a gas boiler, to ensure all of the above conditions, becomes an obvious necessity. We will talk about the principle of operation of the thermostat and the types of the device. Let's look at the differences in functionality of different models.

The article describes in detail the principles of connecting a temperature controller. Rules for installing different versions of the device are given. By following our recommendations, you can complete the installation yourself, without the help of heating engineers.

Connection diagram

To begin with, let’s determine that the connection of an infrared heater to the electrical network occurs either through a socket (most often), or directly through a machine in the distribution panel.
The thermostat is supposed to be built in between the heater and the machine.

We will look at two connection schemes.

Standard

Before you begin the process, you need to understand the power of the controller. Thus, a regular temperature controller can serve several IR heaters at once. In fact, the number of connected heating devices depends on their power.

One thermostat has a power of 3 kW. It is quite enough to service 3 heaters, which are most often used both in apartments and in private houses.

Most controllers are equipped with 4 terminals: two at the input (phase, zero) and two at the output.

The standard connection diagram for an infrared heater via a thermostat is simple. In order to create it, you will need to stretch two wires from the shield to the controller connecting zero and phase. Next, two more cables are passed from the thermostat through the output terminals directly to the heater itself. Thus, we get a sequential connection of all devices from the network.

If you need to connect two or three infrared heaters at once, then the first part of the procedure remains unchanged. The thermostat is connected in the same way. But if you plan to install two heating devices, you should run four wires from its output terminals, and six wires if there are three heaters. Two cables for each heater. We got a parallel connection.

You can optionally use a series connection circuit. Then, first, the wires from the thermostat will go to the first heater, and from it to the second, and so on.

There is another version of the circuit with a simple connection of an infrared heater. It is as follows: the phase wire from the machine is connected to the heating element, and the zero wire is connected to the thermostat. But this method should be used as a last resort, when it is not possible to connect the thermostat in any other way, since it is unreliable.

Using a magnetic starter

It is better to use this scheme when you need to connect several infrared heating devices at once, or one industrial model.

This method involves installing an additional device - a magnetic starter. It is a switching device from the family of electromagnetic contactors. It can be used to switch powerful loads caused by alternating or direct current.

The purpose of a magnetic starter is to frequently turn on and off power electrical circuits.

There are many connection diagrams where this switching device is involved, but we will consider only one. The first part of the process remains unchanged; the machine and the thermostat are connected in the manner discussed above. However, from the output terminals of the thermostat, two cables are led not to the IR heater, but to the magnetic starter, from which they go to the heating device.

Main types of boilers and temperature control

There are several types of boilers: solid fuel, gas, electric and liquid fuel.

Boilers have become widespread throughout the world. There are domestic samples, and there are also imported boilers. Material of manufacture: steel or cast iron. Easy to use, economical, with the function of adjusting the coolant temperature. In cheaper models, this function is implemented using a special device - a thermoelement.

Structurally, a thermoelement is a metal product, the geometric dimensions of which decrease or increase under the influence of temperatures (depending on the degree of heating). And this, in turn, changes the position of a special lever that closes and opens the draft damper. The photo shows an example of such a regulator:

Photo: thermostat sample

The more the damper is open, the stronger the combustion process, and vice versa. Thus, the volume of air that enters the closed combustion chamber is completely controlled by the thermostat, and if necessary, its supply is stopped and the combustion process is extinguished. More modern models are equipped with controllers that, depending on the specified thermal conditions, control the air flow, turning on (or off) a special fan (see photo below):

Boiler with temperature controller

Gas boilers are the most common and cheapest units to operate. Boilers are single-circuit and double-circuit. Single-circuit boilers have one heat exchanger and are intended for heating only. The connection diagram is shown in the figure below:

Switching diagram for a single-circuit boiler

Double-circuit boilers have two heat exchangers and are designed for heating and producing hot water. The boiler switching diagram is presented below:

Switching diagram for a double-circuit boiler

Some boilers have separate controls for heating and hot water temperatures.

Connection nuances

Let's talk a little about how to connect such a device. Ceiling or wall heaters can work normally, but the efficiency of the built-in thermostats is very low, because the sensors will not be triggered by the temperature in the room, but due to the heating of the body of the heater itself. Therefore, the correct installation scheme involves remote placement of control parts. The installation of a thermal regulator must be carried out taking into account the zonal use of such a device, otherwise it will be incorrect. To carry out this procedure correctly, you must adhere to a number of standards:

• if a ceiling heater is installed, then it would be better to place the thermostat somewhere further away on the wall; such installation of a heater of the type in question requires installing a regulator there, but not far from the device;
• It is better to place the regulator from the floor at a height of 150 centimeters;
• installation will depend on the chosen mounting option - if the heater is built-in, then you will need to groove the wall, and devices for installation on the wall require a box for power cables and a thermal sensor;
• if the installation diagram requires placing the device on the outer wall of the building, then thermal insulation material must be installed under the housing, this makes it possible not to cause accidental activation of the relay;
• The selected area for installing the temperature regulator should be located relatively far from windows, doors and heating equipment.

Typically, the thermostat is equipped with two pairs of terminals that are connected to the electrical panel and the heater itself. If, in accordance with the diagram, several heating devices are supposed to be turned on, then they must be turned on in parallel. Then two connection options will be possible:

• when there are so many wires coming from the thermostat that it corresponds to the number of connected devices;
• when only two conductors come from it, which alternately supply energy to the equipment.

During installation, it is necessary not to confuse the connection points of the neutral and phase conductors, because a number of models of electric regulators are very sensitive to this point. In addition, it is planned to install a contactor or magnetic starter. If it is needed, then the output type terminals of the thermostat are connected to the control relay, and the heaters are connected through contacts located on the starter.

Model with remote sensor

The recommendations listed above will help you understand how to connect a ceiling infrared heater to a thermostat. This principle also applies to almost all devices that are installed on walls or ceilings. However, with an infrared heater that is located in the floor, the situation is different.

In this case, a special heating film is placed under the laminate or linoleum. This system is called "warm floor". It is more efficient than wall or ceiling heaters. To control its heating, thermostats with a remote sensor are most often used.

In this case, another wire will come off the device. A small temperature sensor will be installed at its end. It must be mounted directly next to the film in the floor. For rooms with medium and small areas, infrared heated floors can be connected from an outlet. Its power rarely exceeds 1.5 kW.

The best known manufacturers and models: characteristics and prices

BAXI KHG

A well-known simple mechanical thermostat without additional functions or settings. Among mechanical analogues, it is distinguished by Italian build quality and reliability, standard hysteresis of 1°C, and minimalistic, pleasant design. The disadvantages are standard for all mechanical devices - high error, temperature steps of 1°C rather than 0.5°C, constant hysteresis.

Cost: 1,350-1,500 rubles.

TEPLOCOM TS-Prog-2AA/8A

Wired programmable electronic thermostat. It is distinguished by the presence of almost all the functions available today at a low price, essentially the best choice in terms of price-quality ratio.

It has a good contrast display, the ability to set minimum and maximum temperatures, pump protection mode, protection against overheating and freezing, indication of system malfunction, setting hysteresis, programming temperature schedules for 7 days, etc.

The disadvantages are the wired connection and, despite this, power from 2 AA batteries, they are enough for 1-1.5 years of operation.

Cost: 3,300-3,400 rubles.

TEPLOCOM TS-Prog-2AA/3A-RF

The programmable thermostat is absolutely similar to the previous model, but with a wireless connection at a frequency of 868 MHz, which means an increase in the reception range up to 100 meters. The receiver is connected to the boiler via a wired connection. The disadvantage of this model is its rather high price, since wired analogs for this price can have built-in Wi-Fi and GSM modules, and the kit includes sensors for heated floors.

Cost: 5,400-6,500 rubles.

TEPLOLUX MCS-350

One of the best room thermostats for a heating boiler. It has almost all modern monitoring and protective functions, 24/7 programming mode, and detailed consumption statistics. It is distinguished by the presence of a touch LCD display with automatic locking, the presence of a Wi-Fi module that allows you to control the system from a smartphone, and an additional remote temperature sensor included (up to 32 sensors can be connected in total).

Thanks to Wi-Fi, the thermostat can be installed in any inconspicuous place and controlled from a smartphone, but even with an open installation, it will harmoniously fit into almost any interior.

Cost: 4,590-6,000 rubles.

Connecting thermostats to infrared electric heaters

Efficient operation is ensured by correct installation. First, you need to think about where the equipment will be located. The device should not be located in an area of ​​high humidity or near heat sources. If these rules are not followed, the temperature measurement may not be accurate, which will lead to improper operation of the heating device.

The next important question is how to connect the thermostat to the power source and to the heater itself. An automatic shutdown relay is used to close the circuit. Here are the most common connection diagrams.

The first way to connect a thermostat to an infrared heater is to use one thermostat per heater. This option is the simplest method of connecting a thermostat with your own hands.

The second method involves parallel connection of two heating devices to one thermostat. First, the first electric heater is connected in series, from which wiring is made to connect the second device. There is an option to use more than two electric heaters with one thermostat.

Despite the complexity of the connection, this scheme is the most practical. Here, the operating principle of the device is based on the use of an electromagnetic starter for the safe use of an electrical appliance.

Some manufacturers can offer you a ready-made circuit, having their own magnetic starters for sale. Therefore, if you have little understanding of electrical engineering, it is better to first carefully read the connection instructions, or trust the work of professionals.

Cost and types of infrared heaters with a temperature controller using the example of three popular samples. Wall- and ceiling-type infrared thermostat models are the most popular in their product segment. Their main distinguishing quality is their compact dimensions.

In addition, potential customers are attracted by the original design of the product and the ability to select a thermostat to match the design of the room. Let's consider several options.

Room thermometer with liquid

Until now, filled thermometers are considered one of the most accessible temperature measurement sensors. A liquid is added to the tube that is sensitive to changes in temperature, most often colored alcohol or mercury. As the temperature level outside the tube changes, the liquid expands and rises; using the dial table, you can determine what temperature level is currently in the room. This method is good if high accuracy is not required, because when using such a meter, an error of almost a degree is possible, in addition, alcohol models very quickly lose their readings with a sharp change in temperature, they are difficult to record.

Photo - Room thermometer with liquid

The liquid must have a relatively large coefficient of thermal expansion, so that small changes in temperature will result in detectable changes in volume. The tube material is glass, sometimes tempered, but always transparent so that the marked table can be seen. Mercury used to be more common, but its toxicity levels are too high to cause irreparable damage in household use.

Although filled regulators are the simplest and cheapest options for measuring temperature, they are also not durable due to their fragility. They are also rarely used in even small production processes, because there is no way to regulate their operation automatically.

Connecting and installing the thermostat

There are two known options for connecting a thermostat. These are methods for connecting two-core and single-core wires.

Connecting a two-core cable to the thermostat

A two-core wire is used in the case when the TR requires full power from the electrical network for the functioning of a closed system for controlling the heating mode of a certain volume. These are integrated circuits built on microprocessors.

The data received from the sensor in the form of changes in current strength and resistance values ​​are analyzed by the device. As a result, commands are sent to the starter of the heating elements with a given period of time and a boundary threshold for heating a specific space.

Note! An example of connecting a two-core wire is a diagram showing how to connect a thermostat to the circulation pump of a water heating boiler. Connection diagram to the circulation pump

Connection diagram to the circulation pump

Connecting a single-core cable to the thermostat

A single-core cable is used in the connection circuit of thermostats in the case when the device itself is installed in the break of the phase wire leading to the positive terminal of the heating element. That is, the cable serves as a phase break in the mains current supplying the heating elements.

Connecting a thermostat to an infrared heater

Before proceeding with the installation of the heater, you first need to decide on the installation location of the equipment

It is very important to choose the right location to ensure the safest possible use of the device and its trouble-free operation. A few tips will help with this:

Tip 1. Do not place the device where there is high humidity. This is extremely unsafe, especially for electric-type thermostats.

Tip 2. Exposure to sunlight will negatively affect the operation of the device, so it is best to choose a place hidden from the sun. The fact is that, being in the sun, they will begin to show inaccurate data, which will negatively affect the heating process.

Once the location has been selected, you can proceed to preparing all the necessary tools and the installation itself.

Required materials and tools

One of the main tools required is a tape measure - it will allow you to measure the required distance from the ceiling to the selected location for installing the device. Additionally, it is worth stocking up on a building level in order to carry out the installation as smoothly as possible.

Also during the installation process you will need the following tools and materials:

• drill or bit;
• perforator;
• dowel;
• bracket.

Thanks to all these devices, it is possible to install the equipment.

Installation features

When installing the heater, it is worth considering some features, and one of these features is also the mounting of the thermostat. You can consider the process of installing and connecting a thermostat using the example of a Balu brand thermostat.

In order for the device to efficiently cope with all the functions assigned to it, you must first familiarize yourself with the installation rules, and then perform it as correctly as possible

Among the basic rules that you need to pay attention to are:

1. The thermostat can only be installed 1.5 meters from the floor.
2. Before installing the device, you need to place a layer of insulating material under it.
3. Under no circumstances should the thermostat be mounted next to pieces of furniture or behind curtains.

The last point is due to the fact that such an arrangement will be extremely inconvenient, as well as dangerous due to the lack of air that would cool the operation of the device.

Preparatory work

Before you begin connecting the regulator, it is necessary to carry out a number of preparatory steps. First, determine where it will be located, taking into account a number of nuances:

1. The device should not be installed where it may be exposed to direct sunlight; installation in drafts is not recommended. This is especially true for models with a built-in sensor, which will regulate the temperature according to the air flow of the room.
2. It is also undesirable to install the regulator on external walls in contact with the street, as this may lead to incorrect readings.
3. The installation height of the device is an equally important point. Installation at a height of at least 400 mm is prescribed.
4. It is prohibited to install temperature control devices in rooms with high humidity, since almost no model is equipped with a moisture-proof housing. Therefore, if the heated floor is located in a bathroom, shower or bathhouse, then the regulator itself must be moved to the next room, where it will not be exposed to excess moisture.
5. The temperature sensor must be located no closer than 500 mm from the wall, in the case of a cable floor model - between the turns in the center. If the film version is used, then the thermometer head is located in the center of the carbon heating strip.

For more convenient and comfortable installation, it is recommended to use an extended 60 mm socket box. This will allow you to freely position all the wires connected to the device.

For heated floors, it is recommended to install a separate dedicated power line with a copper cable with a wire cross-section of 2.5 mm, which can easily withstand a load of up to 3.5 kilowatts. Moreover, the line must be equipped with a separate 16 ampere circuit breaker.

Before you start connecting, you need to make a groove from the installation site of the device to the floor. It should fit two corrugated pipes with a diameter of 10 mm. In one of them there will be wires to the “cold ends”, in the other - the temperature sensor line. It is especially useful to place the sensor in a corrugated tube, since they can often fail, and in order not to open the coating every time, it will be enough to simply pull out the old one and just as easily insert a new one.

If the screed is designed to be quite thick (35–50 mm), then the corrugated tubes do not need to be immersed in the groove on the floor. Otherwise, you will have to prepare a corresponding groove here too. The ends of the corrugation should be plugged so that the solution does not get there during the process.

When connecting a thermostat to a film-type heated floor, corrugated tubes are not used, since here the principle of measuring temperature will be different.

Types of infrared heaters

Today, infrared heating devices are in high demand. This is an effective equipment that can quickly heat a room to the required temperature. The principle of their operation is simple. The rays emitted by the heater are similar to the heat from the sun. They heat up objects in the room. At the same time, the air remains cool.

Many buyers of such devices have a question: why do we need a heating control unit? Is it possible to connect an infrared heater without a thermostat? Theoretically, the presented equipment can operate without a regulator. However, when it is included in the circuit, it is possible to create optimal microclimate conditions in the room.

Infrared heaters can be installed on walls, ceilings or mounted under floor coverings (infrared film). Each of the presented varieties has its own characteristics. However, their general principle is similar.

Electric boilers

A fairly common alternative to gas and solid fuel boilers. Lots of advantages, high efficiency, but long payback period. The connection is simple, like with gas boilers, but without a cold water supply. Temperature regulation and overheat protection are provided.

Mechanical boiler timer

Using a simple mechanical timer for an electric boiler, there are three options for starting the central heating system:

1. The boiler is turned off;
2. The boiler supplies warm water;
3. The boiler turns on and off at the set time.

Mechanical timers usually have a large round dial with a 24-hour scale in the center. By turning the dial, you can set the desired time, and then leave it in that position. The boiler will turn on at the right time. The outer part consists of a set of tabs for a 15-minute period, which are inserted for easy adjustment of operation and mode settings. Emergency reconfiguration is possible, which is performed with the boiler connected to the network.

Mechanical timers are easy to set up, but the boiler always turns on and off at the same time every day, and this may not satisfy the owners if the family is large and bathing procedures are carried out several times a day at different times.

Connection options diagrams

Any type of thermostat requires proper connection. For this purpose, you can use several diagrams that reflect all the features of the process. You should first take into account that you cannot place the heater with a regulator close to heat sources or in rooms with high humidity, as this will lead to incorrect operation of the control system.

Infrared panels will easily complement any interior

To operate you will need an automatic type relay. This element will act as a power source for the device. After selecting all the necessary parts, you can use one of the following connection diagrams:

• in the first case, you can use 1 heater and 1 thermostat. The machine has 2 pairs of wires, one of them is directed to the thermostat. One wire is neutral, the other is phase. The connection is made accordingly. Using the second pair of elements, a connection is made to the infrared heater;

You can connect one heater to the regulator using wires

Connecting two heaters requires wiring from a thermostat

When connecting several devices, an individual circuit is developed

Features of thermostat models

Connecting the regulator to infrared electric heaters from different manufacturers requires taking into account the features of the device. One of the most popular electric heaters from Ballu is the Bih series, which are ceiling models. They can be connected to a remote controller, and it is also possible to combine several heaters into a whole system. Electronic models of thermostats are often used for connection.

The thermostat is convenient for both ceiling and other infrared heaters

Ballu thermostats combine well with infrared electrical devices of the same brand. The kit includes connection instructions, which makes work easier. The mechanical device has a built-in air temperature sensor, as well as an adjustment wheel, the range of which is often from 5 to 30°.

The regulator and heater of the same brand go well together

The Timberk brand produces both infrared heaters and temperature control devices. Modern models of regulators are produced complete with a remote control, as they are connected according to a circuit diagram to ceiling heating systems. The operation of the device is visualized using multi-colored sensors. Many models have the ability to program shutdown with a delay of 13 hours, and the step is 60 minutes.

The Timberk range includes diverse and modern regulator models

Universal control devices of the Eberle brand and the Instata 2 series are suitable for infrared, water and air heating systems. Digital and push-button control, the presence of a control unit allows you to control one sensor. The result of the work is visualized on the display, it is possible to program the mode for 7 days in advance.

Eberle's assortment includes regulators for heating boilers, as well as for infrared devices

Many brands that produce infrared heaters supplement their range with various types of thermostats. This allows you to create a high-quality chain of devices from one company, which facilitates connection and ensures reliable operation of the system.

Recommendations for proper installation

Universal and simple rules for connecting control devices to infrared panels should be followed for safe and uninterrupted operation of the equipment. Basic tips for installing and placing elements are expressed as follows:

• one thermostat can be installed in each room heated by an infrared heater;
• The sensor can be mounted on the surface of the infrared panel, but a heat-reflecting screen must be installed between them;
• ceiling heaters equipped with a control sensor do not have a power of more than 3 kW;
• It is recommended to install the regulators at a height of 1.5 m from the floor level.

The regulator on the infrared panel has a laconic design and does not spoil the interior of the room

Video: design and connection of a mechanical thermostat

Equipping infrared heaters with a thermostat allows you to remotely or manually regulate the operation of the heating system. Thanks to such control, it is easy to create an optimal atmosphere in the room, eliminating overheating or insufficient heating of the space.

Piping an open gravity system in a private house

It consists of a single device - an open expansion tank, the functions of which are as follows:

1. Compensation for excess heated water.
2. Protection against pressure surges in the system.
3. Removal of air and steam in case of boiling of the coolant.

When selecting the tank volume, the already familiar 10% of the total volume of water in the system is used, with a small margin.
The most optimal point for installing the tank is the top of the heating circuit. An accelerating manifold is installed immediately behind the tank: this is the name given to the vertical spill area after the boiler. So that air accumulations can easily escape into the atmosphere, and water flows by gravity, the section of the system between the tank and the heat exchanger is given a slight slope. For the convenience of replenishing the constantly evaporating coolant, the tank is often equipped with a cold water supply. Date: September 25, 2022

Ceiling heaters with thermostat

This type of infrared heat emitters has its pros and cons, so when choosing them for your dacha, you should rely on the following parameters of the device:

It is important to consider what is made of and how much an infrared ceiling heater with a thermostat weighs. So steel models are cheaper, but not every ceiling will support their weight

Made of aluminum, it will cost more, but it will be suitable for a summer house with any ceiling. If it is assumed that the heater will be the only source of heat in the house, then its power should be calculated based on the area of ​​the room. As a rule, 100 W are required to heat 1 m2. The wavelength emitted by the device also matters. The shorter it is, the smaller the area it can heat. If the ceiling in the country house is high, then you need to choose a long-wave infrared ceiling heater.

If you need to install a ceiling heater in a country house that is not visited in winter, you should choose a device that is protected from condensation and moisture. Since the temperature will be kept at a minimum during this period, it may cause water droplets to form on the ceiling, which may damage the device and create a short circuit. The thermostat for the ceiling heater is selected depending on how often the owners “visit” their dacha in winter. A mechanical device is suitable when someone permanently lives at the dacha. The settings in it are entered manually, and the operating principle is based on turning the heater on/off as the air in the room heats up or cools down. An electronic thermostat or programmer can cost almost the same as an infrared ceiling heater, but can be controlled remotely, setting the unit up to a week in advance based on the time of day.

Important: the use of a thermostat is mandatory not only to save energy, but also to ensure the safety of its operation. In the event of a power outage, expensive models of thermostats save settings and prevent short circuits in the network

The best choice

The selection of a thermostat for a heating boiler is based on the personal preferences of the room owners. When choosing, you should consider what characteristics are required when using a particular boiler.

Wired or Wireless

The communication between the control unit and the sensors and the boiler for different models is carried out wired or wirelessly. In the first case, you will need to lay a wire. The cable length reaches 20 m. This allows the control unit to be mounted at a great distance from the room in which the boiler room is installed.

Wireless thermostats for heating boilers are designed as a receiver and transmitter. A distinctive feature of products of this type is that there is no need for wiring. The transmitter signal can be received at a distance of 20-30 m. This allows you to install the control panel in any room.

Temperature setting accuracy

Depending on the design of the room thermostat, the room temperature setting differs. Inexpensive models have mechanical control. The disadvantage of cheap thermostats is the error reaches 4 degrees. In this case, the temperature adjustment step is one degree. Products with electronic control have an error of 0.5 - 0.8 degrees and an adjustment step of 0.5o. This design allows you to accurately set the required power of the boiler equipment and maintain the temperature in the room in a certain range.

Ability to set the hysteresis value

The room thermostat for a gas boiler has a difference between the switch-on and switch-off temperatures. It is necessary to maintain optimal heat levels in the room.

Hystersis principle

For mechanical products, the hysteresis value does not change and is one degree. This means that after switching off, the boiler will start working after the air temperature in the room drops by one degree. Electromechanical and electronic models have the ability to set hysteresis. The adjustment allows you to change the value up to 0.1 degrees. Thanks to this design, it is possible to constantly maintain the room temperature in the desired range.

Programmable

The function is only available for electronic or electromechanical thermostats. It is possible to program the control unit to set the temperature according to the clock. Depending on the model, thermostats are programmed for up to 7 days. This makes it possible to make the heating system with the gas boiler turned on autonomous. At a certain time, the thermostat turns on or off the boiler unit or changes the intensity of its operation. With weekly programming, gas consumption can be reduced by up to 30 percent.

Wi-fi or GSM

Thermostats with built-in wi-fi and gsm module connect to the internet. Gadgets with installed applications are used to control heating. This is how remote shutdown, connection of the boiler and adjustment of temperature indicators in the heated room are carried out. Using the GSM standard, the room thermostat transmits information about the occurrence of malfunctions in the heating system to the owner’s phone. It is possible to remotely turn on or off the gas boiler.

Safety

When choosing a thermostat for gas boiler equipment, you should pay attention to the presence of safety systems. Functions are available to prevent the circulation pump from stopping, protect against freezing or exceeding the maximum temperature in the heating system, etc.

The presence of such options allows you to safely use boiler equipment in autonomous mode.

How to connect a heated floor to a thermostat

Unlike electric heated floors, where the temperature controller is included and the diagram provides for its connection, underfloor water heating in the basic version is not equipped with automatic equipment. They need to be chosen from two types:

• Mechanical adjustment using a thermal head and a remote coolant temperature sensor.
• Using an electronic thermostat with a servo drive.

There is also a way to centrally control the smart home system from the controller, but due to its high complexity, we will not consider this system. The simplest diagram for connecting a heated floor with a three-way valve and a thermal head with a submersible temperature sensor is presented below.

Connection to underfloor heating

The thermal head, whose drive is installed in a three-way valve, uses an immersion sensor to measure the temperature in the supply manifold, to which the heating circuits of all rooms are connected. When the coolant temperature reaches the set temperature, the head drive actuates the three-way valve, as a result of which water begins to circulate inside the underfloor heating system. The supply of coolant from the boiler is stopped or limited.

This kind of microclimate control is indirect, with coolant flowing to all rooms at the same temperature. A heated floor connected to an electronic thermostat, guided by a room temperature sensor, does not have this drawback. The following diagram will help you make the correct connection.

Connecting a heated floor to an electronic thermostat

To connect a room thermostat to the distribution manifold, you need to install it on the wall indoors, lay the power wires to the home electrical network and to the switching unit, the latter must be placed on the rail above the distributor. Next, the plastic cap is removed from the supply line valve and a servo drive is installed in its place.

The final connection of the heated floor to the thermostat is completed by connecting the wires from the servo drive to the electronic unit. The terminals on all devices to which wires must be connected are indicated in the electrical diagram included with each product. Now the coolant will be supplied to each circuit depending on the actual temperature in the room where the thermostat is located.

Types of room thermostats

There are three types of thermostats for residential premises:

• The electronic device consists of a temperature sensor, a signal transmitter and a thermal relay. The advantage of this device is the accurate determination and subsequent change in the temperature in the room. At the same time, remote control is quite easy and the thermostat can be used in the Smart House system.
• An electromechanical thermostat has a more simplified internal structure than an electronic one. The relay is the main element in the design, shaped like a tube, the cavity of which is filled with a substance that reacts to changes in temperature conditions. During heating of boiler equipment, this substance expands; during cooling, on the contrary, it contracts. All surges are experienced by the drive, which regulates the temperature through an electrical circuit.
• The mechanical unit does not contain electronics. The basis of the operation of this thermostat is a change in the properties of the material under the influence of temperature conditions. Changes in the temperature of the substance filling the gas membrane provoke the closure or opening of the electrical circuit, thereby triggering the thermostat mechanisms.

How does a thermostat work?

Such a regulator consists of two main components:

• A temperature sensor installed near a heat source and/or in a heated room.
• A control unit that processes the signals from the temperature sensor.

These structural elements interact with each other according to the following scheme:

• The control unit receives the heater operating program, which indicates the temperature in the room or the degree of heating of the heating element.
• The temperature sensor reads the “degrees” in the room and/or at the heating element, transmitting this information to the control unit.
• The control unit turns on the heating element if the temperature transmitted by the sensor is less than the programmed value. And turns off the infrared panel if the temperature in the room or at the heating plate exceeds the programmed parameter.

As a result, ceiling and wall infrared heaters with a thermostat consume only the required “volume” of electricity, warming the room only to the desired temperature. In this case, calibration of heat transfer and temperature is carried out in steps of 0.1-1.0 °C

Typical types of thermostats

Modern manufacturers produce two types of thermostats:

Mechanical devices. Such regulators use a special plate or diaphragm made of a temperature-sensitive material as a temperature sensor. Therefore, thermomechanical regulators, in fact, do not have a control unit. The plate closes or opens the contacts of the electrical circuit that powers the infrared heater, “influenced” by the actual temperature in the house. And all regulation consists of fixing the set temperature using a mechanical lever, with the help of which the elements of the plate temperature sensor are positioned.

• The main advantage of such a regulator is the ability to operate without supplying electricity to the device.
• The main disadvantage is the low calibration accuracy - from 0.5 to 1 °C.

Connection diagram of an infrared heater to a thermostat

Electronic devices. The temperature sensor of such a device detects thermal radiation by reading electromagnetic waves of a certain frequency. At the same time, both the temperature “overboard” and the degrees in the house are controlled. The control unit of such a controller receives signals from the sensor and processes them according to a built-in algorithm (program). Electronic devices have only digital controls. The algorithm for processing signals from the sensor is set using factory programs or buttons on the case. Information about temperature and operating modes is displayed.

• The main advantage of such a device is high accuracy - calibration is carried out in increments of 0.1 °C. In addition, there is some control autonomy. For example, infrared heaters with a thermostat for a summer residence can be programmed to operate for a week based on the air temperature outside the house and not even leave the country to monitor and adjust the operation of the heating system. Mechanical regulators cannot do this - the user will have to “turn the adjustment wheel” almost every day.
• The main disadvantage is that it only works when there is voltage in the network.

How to connect a thermostat to an infrared heater?

When installing a thermostat, you need to follow the following generally accepted rules:

• A separate regulator is installed in each heated room.
• A heat-reflecting screen must be installed between the temperature sensor and the supporting surface.
• Infrared ceiling heaters with a thermostat cannot be more powerful than 3 kW.
• The recommended placement height is 1.5 meters from the floor level.

The installation of the device itself is carried out as follows:

• A separate line is “pulled” from the central panel to the regulator, which ends at the incoming “zero” and “phase” terminals.
• A power supply line is drawn from the regulator to the heater, starting from the outgoing “zero” and “phase” terminals.
• External temperature sensors are connected to the corresponding connectors of the thermostat, connected to the regulator using separate lines or wireless communication protocols.

Exact installation diagrams are given in the data sheets for specific models of control devices.

Homemade external thermostat for the boiler: instructions

Below is a diagram of a homemade thermostat for a boiler, which is assembled using Atmega-8 and 566 series microcircuits, a liquid crystal display, a photocell and several temperature sensors. The Atmega-8 programmable microcircuit is responsible for compliance with the specified parameters of the thermostat settings.

Scheme of a homemade external thermostat for a boiler

Strictly speaking, this circuit turns the heating boiler on or off when the outside air temperature decreases (increases) (sensor U2), and also performs these actions when the temperature in the room changes (sensor U1). It is possible to adjust the operation of two timers, which allow you to adjust the time of these processes. A piece of circuitry with a photoresistor affects the process of turning on the boiler depending on the time of day.

Sensor U1 is located directly in the room, and sensor U2 is located on the street. It is connected to the boiler and installed next to it. If necessary, you can add an electrical part of the circuit that allows you to turn on and off high-power units:

The electrical part of the circuit allows you to turn on and off high-power units

Another thermostat circuit with one control parameter based on the K561LA7 chip:

Thermostat circuit with one control parameter based on the K561LA7 microcircuit

The thermostat is assembled on the basis of the K651LA7 microcircuit and is simple and easy to adjust. Our thermostat is a special thermistor that significantly reduces resistance when heating. This resistor is connected to the electricity voltage divider network. This circuit also contains resistor R2, with which we can set the required temperature. Based on this scheme, you can make a thermostat for any boiler: Baxi, Ariston, Evp, Don.

Another circuit for a microcontroller-based thermostat:

Circuit diagram for a thermostat based on a microcontroller

The device is assembled on the basis of a PIC16F84A microcontroller. The role of the sensor is performed by a digital thermometer DS18B20. A small relay controls the load. Microswitches set the temperature, which is displayed on the indicators. Before assembly, you will need to program the microcontroller. First, erase everything from the chip and then reprogram it, and then reassemble it and use it to your health. The device is not capricious and works fine.

The cost of parts is 300-400 rubles. A similar regulator model costs five times more.

A few final tips:

• although different thermostat options are suitable for most models, it is still desirable that the thermostat for the boiler and the boiler itself be made by the same manufacturer, this will greatly simplify the installation and operation process itself;
• before purchasing such equipment, you need to calculate the area of ​​the room and the required temperature in order to avoid “downtime” of equipment and changes in wiring due to connecting devices of higher power;
• before installing the equipment, you need to take care of the thermal insulation of the room, otherwise high heat losses will be inevitable, and this is an additional cost item;
• if you are not sure that you need to purchase expensive equipment, then you can conduct a consumer experiment. Buy a cheaper mechanical thermostat, adjust it and see the result.

The electronic thermostat can be programmed in any order.

Any modern heating boiler, regardless of the type of energy carrier used, must meet a number of requirements. This includes functionality, ergonomics, safety and the last quality, the relevance of which is growing every year - energy efficiency. When choosing a boiler, the buyer thinks about how much the equipment will help save his budget. Reducing energy costs for heating a house will allow not only the high efficiency of the heating element, but also additional components of the heating system. This is a thermostat and thermostat for an electric heating boiler, which control the operation of the boiler depending on the ambient temperature.

In addition, when it comes to electrical equipment, you need to think about purchasing a voltage stabilizer. It will not affect the energy efficiency of the heating device, but will also help save your budget by maintaining the operation of the electric boiler during power surges in the network.

Thermostat Ballu BMT 1: how to connect

The most common and well-known to many is a thermostat with an air temperature sensor Ballu BMT 1. It has proven itself in operation.

Sequence of work:

• Laying cables;
• Installation and connection of the device.

First of all, you need to choose a place to install the heater. After this, you can start laying the wires. To ensure fire safety, you should choose a wire with a cross-section of at least 2.5 mm2.

Having laid the cables, we install the thermostat. Next, we connect the device. To do this, you need to understand the circuit, since many people are completely unclear how to connect the device correctly.

From left to right, the regulator terminals are labeled (3, 4, 1, 5, 6). We connect the supply phase wire to the terminal numbered (1). The neutral wires are connected using the terminal numbered (6). The working zero and the device zero are connected to one terminal.

After this, from the terminal numbered (3), you need to make a jumper to terminal (5). With this jumper, the device indication is connected. The phase wire leading to the heating device is connected to terminal (4).

In order not to get confused when connecting, you need to know the color marking of the wires. Phase wire (white or brown), neutral (blue), ground (yellow - green). It is worth noting that this circuit is suitable for connecting the F2000 thermostat.

How to install and configure the regulator

In most cases, installing a thermostat yourself entails emptying the boiler's water jacket. This will not create a big problem if the piping of the solid fuel boiler is done correctly and the water heating system can be cut off with taps. Otherwise, you will have to drain all the coolant. After this, the plug is removed from the sleeve, and the device is screwed in instead and the system is filled with water again.

To adjust the draft regulator, you need to light the boiler and follow the instructions:

1. Without attaching the chain to the door, open it to allow air to enter.
2. Loosen the locking screw on the adjustment handle.
3. Set the handle to the position corresponding to the required temperature, for example, 70 °C.
4. Watching the boiler thermometer, connect the chain drive to the damper at the moment when it shows 70 °C. In this case, the damper should be slightly open by only 1-2 mm.
5. Tighten the fixing screw.

Next, you should check the operation of the thermostat in all modes, up to maximum. In this case, you need to take into account that some time passes between the moment the damper closes and the drop in coolant temperature and do not rush to reconfigure the device. Solid fuel heat generators are characterized by a delay, because the firewood or coal in the firebox cannot go out at once.

Detailed instructions for DIY installation and connection

You can enjoy all the above benefits only by installing the device correctly. The work is carried out in 5 stages and requires strict adherence to the instructions.

Preparatory stage

First, you need a set of tools so that you don’t have to be distracted during installation. Must be present:

1. Roulette.
2. Pyrometer.
3. Screwdriver.
4. Screwdriver.
5. Drill (perforator).
6. Pliers.

Where and how to install an IR heater?

At this stage, the location of the infrared heater is determined. It can be installed on a wall, ceiling, or with a slope.

IR with a power of up to 800 W is installed in residential premises. If we are talking about public buildings, then the power starts from 1.5 kW.

The surface must be strong to support a load of 20-30 kg.

Do not install the heater near flammable objects

Location and height from the floor

IR is recommended to be installed next to surfaces that absorb heat.
Wood, carpets, and stone surfaces work well. Reflective surfaces should be avoided, since when using the device the owner will receive a minimal effect. Electrical wiring must be laid on a non-combustible base. The location of the heater largely depends on the specifics of the premises. There is an optimal scheme for placing IR in residential buildings. It looks like this:

1. A pyrometer can measure the coldest place that needs heating. In the case of installing several heaters at once, it is required.
2. The height from the floor should be 1.5 m in residential areas. If a person spends a lot of time under the heater, the value should start from 1.8 m.
3. If the installation of a high-temperature infrared heater is carried out in public buildings, offices, then the distance should be 2 m.

Installation of the device

You can do the installation yourself without spending a penny. The only difficulty is that it requires certain skills and knowledge, as well as knowledge of the installation process.

During installation and connection to the electrical network, it is prohibited to turn on the heater.

Progress:

Determine the mounting height from the ceiling and floor using a tape measure. Tighten the bolts or drill a hole with a drill (perforator) if the wall is concrete

It is important that the distance between the attachment points is the same. Insert dowels into the drilled holes. Install fasteners. Secure the device into the fixing holes. The designs of different heaters may differ slightly, so do not ignore the manufacturers' recommendations

The designs of different heaters may differ slightly, so do not ignore the manufacturers' recommendations.

Electrical connection

To save energy and provide a comfortable temperature, the infrared heater is mounted together with a thermostat. The device automatically turns off the IR when the room reaches the specified temperature. As soon as the air in the room cools down, the thermostat turns on the IR.

Connecting to the network together with the thermostat takes place in 4 stages:

1. Attach the thermostat to the wall at a height of 1.4 m from the floor near the infrared heater.
2. Select a wire that is resistant to heavy loads. It must be laid inside the walls and ceiling from the IR to the thermostat.
3. The wire is masked with plaster or special boxes.
4. The heater wiring is switched parallel to the main line.

When installing heaters in several rooms at once, one thermostat will not be enough. One device is required for each room.

Connection diagram for several heaters via a thermostat

The connection involves connecting the cables of several devices to the thermostat. Next, the thermostat is connected to the junction box.

The best option is to create a separate machine in the switchboard. This will prevent the risk of overload.