The principle of operation of the gas heating boiler is simple: with fire heats up the heat exchanger from a metal, transmitting energy in water. In this machine all the plug members are complicated engineering system. Therefore, besides the main components therein, a plurality of additional, types of sensors, fuses, and others. The fact that the main aspect of activity of such equipment - safety. It is provided with additional elements.
Thrust in the gas boiler - what is it?
During operation of conventional or condensing gas boiler is released carbon monoxide. He can threaten human health in the event of overcrowding. It is therefore necessary to remove him from the premises. The boiler, whether standard or condensation, connected special move. It must necessarily be required traction intensity. The process itself is a vacuum air, whereby the gas and there is the deletion.
The sensor rod
In most cases, the boiler that runs on gas, auto. It is in this regard, it must have a special device that will keep track of a sufficient level of traction. It just is appropriate sensor. The main function of the send signal is in case of change of carbon monoxide removal performance. It is responsible for what gas boiler stops.
Important! Insufficient intensity of thrust can lead to accumulation in the flue gas space. Furthermore, due to this burning flame becomes unstable. In case of bad "exhaustion" of the combustion products, increases the probability of a "reverse traction".
Main article: what to do if not working gas boiler?
The operating principle of the sensor rod
Each installation has its own separate sensor having an individual principle. Condensing gas boilers, endowed with natural draft, have an open furnace and chimney required diameter - that is what makes it possible to create the necessary intensity of the emission of gases. For this kind of plant uses a special sensor - thermocouple. It is a bimetallic plate which is endowed with a moving contact.
The principle of operation of the standard gas boiler traction sensor is based on the physical phenomenon of expansion upon heating body. Craving good - the temperature is within the normal range. When the gases are ejected not as expected, due to the large amount of heat plate increases in volume. When the temperature reaches at the point contact is interrupted and the operation is stopped igniter. As a result, the equipment is switched off. That's the whole principle of the common gas boiler thermocouple.
Important! Propane-Butane has a high caloric content as compared to natural gas. Therefore, gas discharge temperature is higher. Despite the fact that the thermocouple action principle is always the same for different types of mixtures device is configured differently.
Each individual gas boiler has the same operation principle. At this temperature settings, in which the tripping mechanism is activated, it is set at the factory. Run on natural raw materials can be started from the 75 degrees and the end 950. But in a gas boiler operating on propane-butane, the maximum mark is 1500 degrees.
Equipment which has forced traction, equipped with a closed combustion chamber and a fan. It is the latter, and is responsible for the removal of gases. Therefore, in this case the operation of the thrust sensor is to monitor the fan. It is a pneumatic relay. Gases under pressure act on the diaphragm whereby the contacts are closed. Once pressure drops - the gas valve is blocked and the boiler stops burning.
Boilers increased power
We should also talk about the fact that such a condensing boiler. In fact, it's the same device, but has an additional heat intake system. The operating principle of the condensing equipment is simple. During the gas combustion products are not directly emitted to the outside and filled with a special camera. It takes place cooling to 55 degrees and the water appears. That is why this is called a condensing boiler.
The energy that results from this process, is sent to the heating system. But she does it through the work of the three-way valve. This mechanism is simple. He is not often used. Element resembles a tee, but it performs very different functions. The operating principle of the three-way valve is simple: it is a mixing of water from the system and the camera. As a result, to create the desired temperature in the room spent a lot less energy.
Due to all this, the assembled device makes it possible to save up to 35% of the energy carrier. This is a significant performance to date.
It should be noted that on its own condensing boiler sensor is installed, which is configured in a special way. The fact that the outlet temperature is lower, and thus the thermocouple will react differently.
thermocouple types
can not be considered in itself a complex device. Thermocouple - a piece of equipment that you can even make your own. The main thing to pick up the components correctly. This device has several major varieties:
- Type E. The device, as well as other set of two metal plates: constantan and chromel. This combination allows to measure the temperature in the range -50 to 740 degrees Celsius
- Type J. This chromel thermocouple instead has an iron plate. The combination allows measurements from -40. But the device has become more sensitive to changes.
- Type K. This thermocouple is the most widespread, since the components made of aluminum and chromel. This makes it possible to considerably broaden the temperature range from -200 to 1350. The device has a maximum sensitivity. It should be noted that the duration of the operation depends on the conditions of use. For instance, when chromel constant contact with carbon dioxide coated green rust, which rapidly removes it from the system.
installation
Installation of the sensors is carried out exclusively on an individual basis. First you need to buy a suitable component. For this description will help the boiler and its technical documentation. After a suitable acquisition calculated location. Before the actual installation, you can even view the video to pinpoint all at once. In any case it is desirable to entrust this procedure specialist. Besides the unit itself, you still need to conduct its setting. Only then can you start the system.
Rod sensor for gas boiler - a mandatory element. Without it, the system can quickly be damaged or even harm people's health. It plays an important role as a flame sensor or thermostat. This equipment is of several types. The choice depends directly on the conditions of use.
