Why is a solid fuel boiler boiling
The reason for boiling boiler is that the water in the heating system does not have time to sufficiently cool. The movement of the coolant (water) should be calculated so that on the way through all the radiators it managed to completely cool and returned to the boiler already chilled. If this does not happen, then the overheated water at the entrance to the boiler manages to boil while moving along it.
There are a number of factors leading to overheating of water in the boiler. Each of them is based on either the wrong calculation of the heating system, or the failure of its individual elements. A more accurate determination of the sources of malfunction of the stable operation of the heat system requires a detailed analysis of a specific scheme.
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The most susceptible to this problem is precisely solid fuel boilers of long burning. When analyzing the origin of the malfunction, first of all, it should be established at what stage of heating arrangement the process of boiling water was discovered. There may be two options:
- The coolant in the boiler began to boil immediately after the completion of the installation of the pipes and the first launch.
- The boiling of water occurred in a system that had previously worked for several months or years.
In the first case, you must first carefully study the performance of each of the devices. The cause of the malfunction can be the wrong connection of one or more devices, and errors made in the process of laying pipes.
Boiling water that appeared in an already working heat system is less common. This is usually due to the failure of the circulation pump and air entering the system. If the pump is in order, then the probability of a mitch in the pipeline. The formation of a lime plaque from the inside of the valves or pipes causes their narrowing and inhibits the speed of advancement of the coolant.
Slow water movement in the boiler
If the functions of each element of the heat system are normal, then perhaps one or more pipes do not have enough diameter. Even one short section of the pipeline with channels, the cross.section of which is less optimal, can become source of problem. The fact is that the coolant will not move through the narrow ducts quickly enough. This leads to a delay in the system, and therefore in the boiler.
When the water is in a heated boiler for too long, it gains a higher temperature than necessary. As a result, flipping fluid with all the ensuing consequences occurs. Most heating systems have protection specifically for such cases, sometimes even two- or three-level. However, the operation of the defense is a sign that something has gone wrong.
It is also important to consider the diameter of the cranes (valves) at the points of connection of pipes to radiators. Often, these places are specially made too narrow to extend the time of water in the battery and give the radiator sections the opportunity to warm up well. This technique ultimately also slows down the water current through the pipes.
It is especially important to make a pipeline with a well.calculated diameter (at least 25 mm) in systems with natural circulation. That is, if a circulation pump is not included in the circuit. In such a heating system, the movement of water is ensured by natural laws of hydraulics and gravitational forces.
With the correct location of all elements, the coolant independently sets in motion in the process of heating. Hotter water has less density and weight, and cold is heavier and denser.
Water speed adjustment is available only to a decrease or increase in the lumen of the regulatory valves. And there is always a limit here: when all the valves are completely open, the movement of the coolant will no longer come out to speed up.
The role of the circulation pump
The circulation pump is a device that is installed in the heating system to create forced water movement in it. It is installed, as a rule, on the reverse current of the coolant, so that the pump works with already chilled water.
The heat system with a circulation pump is called a heating system with forced circulation. If earlier the water through the pipeline moved naturally, then you can solve the boiler boiling problem by installing such a pump. It will accelerate the movement of the coolant and will avoid excessive fluid retention in the boiler, which led to its boiling.
At the same time, such a solution is only a temporary measure. In the first case, the electricity shutdown, the pump will stop working and the water in the boiler will immediately begin to boil. It will be impossible to use heating during this period, even if it provides for the protection systems against boiling. All measures to prevent boiling water in the system with a stopped pump are emergency in nature. They are aimed only at maintaining the integrity of the boiler and pipes for a short period, until the boiler cools down.
If the water boils in the boiler, and the pump in the system works properly, then the circulation pump should be calibrated. It can be tuned both for insufficiently strong pressure and the creation of excessively high pressure. In both cases, the phenomenon of the so.called cavitation arises, leading to the appearance of air bubbles in water.
You can fix the situation with the following techniques. Firstly, the pump needs to be installed on the slowest mode of operation. If the boiling stopped, then the fact was that the device created excess pressure. The solution consists in placing a bypass with a balancing valve on the site between the water entrance to the device and output.
For contour pumps, there are norms of pressure at the entrance and output. This indicator at the water flow point is 0.8 bar, and at the output. 1 bar. Deviation from standard values inevitably leads to the appearance of cavitation. Cavitation is harmful because it causes the formation of air bubbles in water, which harm all elements of the system. It is because of them, including the coolant in the boiler boils.
Another case leading to the appearance of cavitation is the installation of a pump in a boiler and a contour pump into a counter. Когда схема требует размещения двух насосов, то при монтаже каждого устройства возникает вероятность их размещения в противоток. If after inspection of the system this installation error was found, it should be eliminated.
How a gas column works?
The term “gas column” is the legacy of the Soviet period. In those days when hot water supply was only established, during the construction of houses in the apartments, simplified wall gas boilers were installed, not equipped with automation and security systems.
Morally, technically outdated units were uncomfortable and dangerous. Modern equipment is radically different from its ancestor. The devices are convenient, beautiful and completely unrealistic for the health and property of the owners.
I am gas speakers with manual, with piezor.zhig and electronic ignition, are equipped with sensitive sensors interrupting the supply of fuel in the event of an attenuation
Run gas water heaters are a metal structure with a heating system. Pipes are brought to it to enter cold and hot water, for the coolant circulating through the heat exchanger, as well as for gas. The smell is located at the bottom of the equipment. It functions like a lighter.
The gas valve opens automatically immediately after the water is turned on or the process of heating the coolant. The main burner receives gas, which lights up from the litter and releases heat. Water enters the heat exchanger, which is a spiral tube, where it is prepared for the supply of heating or in the DIS.
Hot water is already entering the water tap. It heats up within 2-3 seconds after turning on the burner. Its temperature depends on individual settings. To remove combustion products, the presence of a chimney is mandatory.
Options for protecting solid fuel boilers from overheating
A cheap and simple option for protecting a solid fuel boiler from boiling is source of uninterrupted power supply. This is an inverter and an electric battery.
How the source of uninterrupted electricity supply works
The circulation pump and the boiler fan are connected through the inverter to the mains. When you turn off electricity on the network, the inverter begins to take electricity from the battery, converting it from 12 V to 220 V. When electricity appears on the network, the inverter switches and begins to charge the battery.
In our case, this is a pump 25/40. Its power if it works at the first speed of 36 watts. We will not connect the fan to the UPS, t.to. we will heat firewood, and with firebox, the fan does not need firewood.
Use a boiler fan or a circulation pump works at you at other speeds? The battery selection formula below.
Calculation of the necessary battery capacity
To determine the necessary battery capacity, you can use the formula:
E = pt/k/u/kkpd, e. the battery capacity, a/h k. the battery depth coefficient (recommend 0.7) u. the voltage of the battery, in P. the power of connected electrical appliances, WT TT. the required time of uninterruptedly work, h KKPD.Efficiency of an uninterrupted power source (accepted 0.8)
Example: power consumption 36 W, voltage of the battery 12 V, the required reserve time is 8 hours.
Battery with a capacity of 45 a/h, costs about 9,000. 400-500 watts inverter will cost about 7,000. I give at the time of writing an article. April 2020.
High power of the boiler
If the power of the device is higher than the heat transfer of the highway, this can also lead to boiling water. Especially if the system adjusting the air supply is broken or there is no completely. There are several options for solving the problem:
- put an automatic adjustment system;
- put similar, but semi.automatic;
- change the boiler (if it is made with your own hands);
- increase the number of batteries;
- increase their power.
note! In addition, you can cut an indirect heating boiler into the highway. this device will “absorb” some of the energy from the system for heating water and will serve as a kind of heat accumulator.
If you have a circulating pump, but the system works unstable, then the problem may lie in it. To check the performance, attach a hand to the battery. if you feel light vibration, then the pump works fine, if not, perform the following actions.
- Check and clean the electrical contacts.
- Check the details of the pump for wear and lime deposits (if ordinary tap water is used).
- Finally, you can turn off the pump, unscrew the plug and crank the shaft with maximum caution. For a while it should help. To remove deposits, you can use citric acid.
We hope now you know why water is boiling in the boiler. To avoid such problems in the future, we advise you to watch a thematic video, and you can find out in more detail about boilers here. http: // Formulatepla.com.UA/7-Kotly-Dlitelnogo-Goreniya.
How to restore the boiler
If the technique overheats, do not delay the repair. There are times when a gas boiler explodes. Therefore, eliminate the problem as soon as it was noticed.
ZARS and EVERYTHING of the system
If the water stagnates and does not circulate in the circuit, this leads to boiling. You can hear the fluid inside gurgle. Disconnect the device, wait for the coolant to cool. Often filters on both sides are overlapped with valves, so you do not have to drain all the water from the system. Twist the taps, take out and rinse the filters.
With a strong suction of the mesh filter, lower it into a solution of citric acid. Additionally, you can clean the part with a non.fiber brush.
It is better to replace the filters worn out and not subject to cleaning.
Air cork slows down the movement of the fluid or completely stops it. How to deal with it:
- You will hear the air with hissing will leave the contour. Then water can pour. Do not close the taps at once. Wait for the liquid to merge and is terrified by all the air;
- Repeat the procedure until the air traffic jam is completely eliminated.
Salt of magnesium and potassium are deposited on the details of the boiler when heated over 55 degrees. Most of all, the scale settles in the heat exchanger, because the liquid circulates and heats up in it. As a result, the passages in the tubes are narrowed, the pressure is reduced, and water boils in the node. This leads to overheating and breakdown of the heat exchanger.
To clean the knot, dismantle it. The most effective way is to connect the pump to the node and pump it with a reagent. After that, the radiator is washed with running water, dried and installed in place.
At home, the radiator is placed in a metal container with warm water. A solution of citric acid is poured into the coil. The capacity is placed on the stove, where it warms up for half an hour.
To prevent the formation of scale, install magnetic filters. It is enough to change their cassettes for a month, but they soften the water well.
Problems with the pump
When you turn on the boiler after prolonged downtime, check the pump. His details could be stuck, and the holes are clogged. Clean and replace faulty parts.
Problems with installation
When installing a boiler in a room with high humidity, the risk of corrosion increases. This leads to a violation of the tightness of the system, the leakage of the coolant and gas. Therefore, before choosing a place for equipment, read the requirements for it.
Be attentive to gas equipment. Once a year, carry out the prevention of breakdowns and technical inspection.
Why is the gas boiler boiling
Consider the principle of operation of the gas boiler. Under normal conditions, the coolant warms up inside the boiler to a given temperature due to fuel burning. Then the heated water spreads throughout the heating system, warming the radiators in the room. After that, the liquid returns to the boiler.
In case of malfunctions, the coolant is overheated, thermal attires are triggered, and the security system stops the operation of the heating boiler. It is good if the device is equipped with a display, then the self.diagnosis system will display an error number on the screen depending on the boiler model:
If the technique is not equipped with a display, then overheating is determined by external signs: the device heats up stronger than usual, and the burner immediately stops working.
Several reasons for overheating of the boiler are possible:
- clogging filters;
- the formation of air traffic jams;
- clogging of the heat exchanger (for example, scale);
- a malfunction of the circulation pump;
- improper operation of the smoke removal system;
- equipment installation site;
- High power capacity.
Low circulation of the coolant in the heating circuit leads to the fact that the water stagnates and boils. In this case, you can hear gurgling inside the boiler.
Causes of boiling in different types of boilers
In addition to insufficient circulation and faning, gas devices suffer from clogging filters: the latter need periodic cleaning or replacement. If the exfolved particles of the scrap clogged the duct, knocking, clicking sounds can be heard, here you need to clean the unit with special chemicals. Overheating can be caused by a long stagnation of the system and the subsequent sharp launch (it is necessary to ensure a preliminary run of ventilation engineering).
Actions that are relevant when boiling a gas boiler:
- checking the completeness of the circulation of the coolant and filters;
- monitoring the serviceability of cranes on radiators and circulation pump;
- traction control in the chimney;
- Cleaning the heat exchanger.
Solid fuel boilers overheat due to incorrectly correlating their power with the parameters of the serviced room. The problem of pressure in equipment caused by the circulation pump is often fixed.
Steam boilers are seriously dependent on the presence of liquid in them: due to the low level of the walls, emergency situations arise. Here you should stop feeding the fuel, wait for the cooling of the device and add the working environment.
- clog clip;
- a malfunction of the thermostat, causing the functioning of the heater even after an increase in temperature;
- membrane malfunction;
- coolant failure;
- breakdown of the circulation pump;
- The regulators for feeding in the return are not open.
The prevention of overheating will be the introduction of a buffer container that does not allow the boiler to boil, excess heat energy will be directed into it. source of uninterrupted nutrition will not be afraid to disconnect control units and pump. An additional circuit for a solid fuel boiler will allow cooling in a timely manner. Experts also recommend periodically inspecting and maintaining (cleaning) the ventilation system.
A solid fuel boiler smokes, what to do?
Sometimes, the owners of the solid fuel boilers are faced. Simply. Smoke is falling from the boiler. What in this case to do and not everyone knows what to do. Find the reasons why the boiler on solid fuel will smoke this article. We will tell you what to do, what things to pay attention to and what are the reasons for this phenomenon.
Clicks boiler: causes and methods of elimination
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The main reasons why the coal boiler is puffed:
- Poor thermal insulation of the chimney, clogging of the chimney.
- Unfinished chimney.
- Insufficient pipe height above the roof, the chimney’s reckoning
- Lack of tightness of the chimney, horizontal areas of more than 1 meter.
- Shiber’s position.
- Bad ventilation.
If your solid fuel boiler began to smoke strongly, then it’s time to put things in order in the chimney. clean and check the rest of the factors worsening.
Bad thrust is a consequence of the clogging of the chimney due to the resulting condensation. Condensate in the pipe occurs due to a large temperature difference, which is why the chimney needs thermal insulation. The temperature of the smoke in the pipe should not be below the dew point. 70 degrees.
The boiler boiled what to do?
The modern way to insulate a chimney. This is put in the attic and Street Pipe-Sandwich. The design of the sandwich pipe already provides a layer of insulation laid between the inner and outer pipe-fucker.
Sandwich pipes do not allow smoke to cool to too low temperatures, thereby preventing the abundant appearance of condensate. Condensate accelerates the process of soot sticking on the walls of the chimney, which negatively affects the thrust. A clogged chimney is the answer to the question “Why is smoke from the door of the boiler”.
Regular cleaning of the chimney and the prevention of the formation of a large amount of soot with the help of special tools will become the key to good traction and lack of smoke in the house. You can use chemistry for cleaning, as well as periodically remove soot with a brush.
Less so soot will form, if you do not use wet fuel, tarry species of firewood and as mentioned above, insulate the smoke channel.
Another common reason why a solid fuel boiler smokes at the beginning of the kindergarten is an unheated pipe.
Often this phenomenon is observed in colder weather, with low atmospheric pressure. When the boiler does not work, the air in the chimney is cold. Since, cold air is heavier than warm, it is harder to push it out to smoke. The so.called air traffic jam is formed. There are flows of warm smoke and cold air. As a result, the smoke is released into the room.
The way out will be the gradual heating of the chimney. To do this, the first ignition must be produced with chips, paper, old newspapers or something like that. A small stream of warm air, like a boumor easily “breaks” a cold pillar. After that, you can make the main voluminous laying of firewood.
Sometimes smoke from the boiler is falling around when the height of the chimney is below the roof skate, that is, insufficient. Also, you can not make a smokeshift diameter less than the boiler manufacturer recommended for each specific power. These factors also create risk and the possibility of smoke.
If you smoke a boiler with solid fuel, you need to check the height and increase it if necessary.
If it happened that the diameter of the pipes is smaller than necessary at a sufficient height, then the exit will be adding another meter or two to height. This stabilizes traction.
The best solution for good traction will be the minimum length of the horizontal sections of the pipe smooth transitions of chimney pipes at an angle of 45 are preferable than 90.
What to do if the boiler is smokes subject to all the installation standards of the chimney? The weather is bad to blame. Sharp gusts of winds can worsen traction.
To get out of the situation, a cone is installed as the end of the pipe that protects from the side wind. Such a detail as a weather vane will be able to strengthen the traction.
Why still can smoke and smoke a heating boiler? Another reason. low.quality seams of chimney pipes without proper tightness. Smoke can also seep through these cracks, interfering with normal thrust. In this case, only the complete replacement of the smoke will help.
A solid fuel boiler boiled! effects
Sometimes smoke in the room appears if the degree of opening of the Shiber appears. Closed damper at the stage. A significant obstacle to the release of smoke, as expected, respectively, the smoke in the room appears.
Smoke goes into the room even if in the room where a solid fuel boiler is located insufficient air flow.
After reading this article, each owner of the heating system on wood will know what to do when the boiler smokes. Having taken the above measures, observing safety precautions and the rules for the operation of a solid fuel boiler, there should be no problems with traction.