How to choose an external temperature sensor for a heating boiler

It is essential to select the appropriate external temperature sensor for your heating boiler if you want to keep your home as comfortable and energy-efficient as possible. It can be confusing to choose the right sensor for your needs from the wide range of options on the market. We’ll go over the important things to think about in this guide to make sure your external temperature sensor works well with your heating system.

Compatibility comes first and is crucial. Make sure the temperature sensor is compatible with the model of your heating boiler before making any purchases. Sensor requirements might vary amongst boilers, so it’s critical to verify compatibility to prevent problems or malfunctions.

Another important thing to think about when selecting an external temperature sensor is accuracy. The precise temperature readings that a highly accurate sensor will provide will enable your heating system to run effectively and efficiently. To guarantee dependable operation and prevent any disparities in temperature regulation, look for sensors that have a solid reputation for accuracy.

Any temperature sensor must have durability and dependability, especially if it will be mounted outside. The sensor needs to be made to withstand the different weather conditions it will encounter, such as rain, snow, and extremely high or low temperatures. Select sensors composed of robust materials that can withstand environmental damage and corrosion.

Additionally, take into account the installation procedure when selecting an external temperature sensor. The ideal sensor should be simple to install and work with the way your heating system is currently configured. To make installation easier and reduce potential issues, look for sensors that include all required mounting hardware and clear installation instructions.

How is the interaction of the sensor with the boiler

There are two ways to interact, depending on the boiler model: directly and via a room thermostat.

Only boiler models that have the appropriate automation and terminal block/connector on the boiler—a possibility that is mentioned in the model’s technical specifications—allow you to connect the temperature sensor directly to the boiler. Models like the Baxi Eco Four line, the Baxi Luna-3 line, the Buderus Logamax U072, the VISSMANN VITOPEND 100-W, and the majority of other contemporary gas boiler models, for instance, have the potential to be connected to thermal sites.

Both electric and solid fuel boilers directly support the connection of an external control.

It is preferable to connect an external sensor via an electronic indoor thermostat that allows programming if the boiler has a basic, low-functional automation. By programming the boiler to operate, you can save money on heating costs regardless of the fuel type used by, for example, lowering the temperature to 15 degrees during working hours when no hosts are present. A decent thermostat can be purchased for between 1,500 and 3,000 rubles, but with careful use, it can last for several months.

An inbuilt temperature sensor in the indoor thermostat already detects the ambient temperature in the space where it is mounted. Purchasing a universal street temperature sensor is necessary in order to implement weather-dependent control. thermal regulators equipped with a street temperature sensor by default. On the other hand, the delivery supply frequently has a temperature sensor for warm floors.

How to select a room thermostat to reduce monthly heating costs by up to 30%

Three temperature sensors—outdoor, indoor, and for warm floors—are usually enough to set up the best possible control scheme for the heating system.

Device and principle of operation

The majority of the time, thermals are metals or thermally sensitive liquids enclosed in a tiny hermetic case. Metals create resistance or the thermoelectric effect (which occurs when the connected conductors’ contacts are at different temperatures) when heated.

Thus, information is sent to the thermostat or directly to the boiler’s automation, which controls the burner’s power and turns the boiler on and off, through the mechanical exposure of thermosensitive elements. Regardless of the internal automation program, the thermostat controls the boiler’s operating mode (up to a complete shutdown or an unplanned ignition), based on information from external thermal attires that is always given priority.

Street models are additionally shielded from moisture and mechanical exposure by a plastic protective case.

Existing species

Classification according to the method of measuring temperature

• Thermocouple – The very first and high -precision sensors, but the accuracy of their testimony is quite difficult to remove and interpret the automation program. Their action is based on the interaction of two different metals soldered to each other. When they are heated, a weak electric current occurs;
• Thermoresistors – simpler in interpretation and accurate sensors, the action of which is based on an increase in the resistance of thermo -sensitive materials with an increase in the external environment;
• Manometric sensors – their action is based on the expansion of thermal fluid or gas when heated, which creates a certain pressure in a closed volume;
• Digital – These are modern sensors (digital thermometers) working on the principle of calculation and transformation. They differ in high accuracy (up to 0.5 ° C) and a large range of measured temperatures (from -55 ° C). Famous examples – DS18B20, LM75A.

Classification by placement method

• overhead – are applied to pipes, radiators or a system of water warm floors;
• submersible – plunged into the coolant, for example, again, in the system of water warm floors;
• indoor – weakly disabled from external influences, having a small range of measured temperatures therefore intended for air measuring exclusively in the room;
• Street – resistant to non -mechanical influences and moisture, often additionally protected by the body, have a higher range of measured temperatures.

It should be noted that there are no tiny wireless sensors because they require a controller to read and transmit signals, let alone provide power. Thus, a wireless thermostat can have a room sensor built in, but it cannot have a tiny thermal attenter for a heating boiler.

How to choose a remote thermal attemptier

Whether the sensor communicates directly with the boiler or via the thermostat will determine which option is best.

Connected directly to the boiler

There isn’t much of a selection here; these are typically one to three models made by the boiler’s manufacturer. The technical characteristics and instructions indicate which models or boiler line they are compatible with. You will need to purchase an additional cable (typically two-core with a cross section of 0.5 mm 2) to connect a thermostat to a boiler. The sensor’s instructions specify the precise specifications for the resistance and cross-section.

Connected to the thermostat

Rarely, the street sensor comes with an indoor thermostat, but most of the time, a sensor is used to gauge how warm the floors are. The thermostat is equipped with universal street temperature sensors (from Gira, TIM, SHUFT (ATF2-NTC10K), or TST02 TST02) to measure the street temperature. It’s critical to consider the following:

• The range of measured temperatures – for example, in TST02 TET02 TET02, from +5 to +45 ° C, which is not applicable in the cold season;
• degree of moisture protection;
• measurement accuracy/error-an error of +-1 ° C is considered permissible, a good result is +-0.5 ° C;
• cable length-usually a 2-6 m long cable is already connected to a thermal attach.

How to connect a thermostat to a boiler unit

In accordance with the following specifications, the street temperature sensor for the heating boiler is mounted on the exterior of the heated building’s wall:

• The wall should be exclusively northern or north-eastern, to avoid direct sunlight. If the hit is still assumed, it is necessary to protect the sensor with a visor;
• If possible, it is necessary to avoid installing the sensor in places of high humidity and a high degree of mold;
• the wall should have a thickness and the degree of thermal insulation sufficient to exclude the heating of the sensor with a heat of the heated room;
• It is not recommended to install a measuring device near the air conditioner, chimney, exhaust or supply channels, any other structures that can affect the measurement results.

The temperature sensor’s instructions specify the section and resistance parameters of the two-core cable that connects it to the boiler or thermostat. The coupling ensures that the connections are hermetically isolated. The sensor is fastened to the wall using anchor bolts, such as 5×25.

Since the instructions always include a detailed description of the algorithms, proper installation and connection do not result in any unique issues.

Temperature sensors don’t require calibration or adjustments, and their accuracy and performance are verified in a room temperature test.

Choosing the right external temperature sensor for your heating boiler is crucial for efficient and effective home heating and insulation. The sensor plays a key role in regulating the temperature of your boiler system, ensuring it operates optimally while keeping your home comfortable. When selecting a sensor, consider factors like accuracy, durability, compatibility with your boiler system, and ease of installation. Look for sensors that are resistant to weather conditions and can provide reliable readings in varying outdoor environments. Additionally, opt for models that are easy to maintain and calibrate. By carefully choosing the right external temperature sensor, you can enhance the performance of your heating system and improve energy efficiency in your home.

Prices

It is essential to select the appropriate external temperature sensor for your heating boiler if you want to keep your home as comfortable and efficient as possible. With so many options on the market, it’s important to take durability, accuracy, and compatibility into account.

Picking a temperature sensor requires careful consideration of accuracy. Precise readings from your sensor guarantee that your heating system reacts to outside temperature changes in a way that saves energy and keeps your house consistently warm. For precise temperature monitoring, look for sensors with dependable calibration and premium parts.

Still another important thing to think about is compatibility with your heating system. For best results, different boilers might need different kinds of temperature sensors. Check your boiler’s specifications before making a purchase to make sure the sensor you select is compatible with the make and model of the appliance. Reliable performance and a smooth integration are guaranteed by this compatibility.

Another important consideration is durability, particularly for outdoor temperature sensors. The sensor will be subjected to a range of weather conditions, such as precipitation, snowfall, and high temperatures. To ensure long-term reliability, choose weatherproof housing and sturdy construction for your sensors.

When selecting a temperature sensor, take installation and maintenance ease into account as well. To reduce the need for expert assistance and potential downtime, look for sensors that are simple to install and calibrate. In a similar vein, choose sensors that require little upkeep to maintain the efficiency of your heating system.

Finally, when choosing an external temperature sensor for your heating boiler, it’s important to take accuracy, compatibility, durability, installation, and maintenance into account. You can make sure that your home heating system operates as efficiently, reliably, and comfortably as possible by selecting a sensor that satisfies these requirements.

Video on the topic

Weather -dependent automation, the work of the boiler on the street sensor.

Temperature sensors for boilers. Purpose, principle of work, malfunction.

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Removal sensor of the temperature of the heating boiler