What should I do if the parallel radiator is not hot, and what is the reason?

All of these answers are in a theoretical sense, and have little practical significance. I'll answer a professional.

In the case of tandem mixing, it is most likely to lead to the phenomenon that the heating in the "middle position" is not hot:

One is deflating. The second is to release water.

The third is dredging. Fourth, if none of the above three methods work, it is in this group of radiators.

add a valve near the water outlet.

The reason for the lack of heat is that after opening the "main valve", the water will be connected from the parallel.

The "water inlet and outlet" of the group of radiators are poured into this group of radiators almost at the same time, so that in this group of radiators (generally this group of radiators is a lot of pieces or several groups of connected in series, otherwise this phenomenon will also occur) the negative pressure such as nest wind and nest cold water is formed, so that the hot water at the inlet can not be flushed in, and the hot water at the outlet can not be withdrawn, and the circulation of hot water cannot be formed, and the hot water can only flow away from the straight channel without resistance.

The principle and function of installing a valve is: first drain the water in the radiator, then close the valve, and then open the "total water inlet valve" (the whole process is that the "total outlet valve" should always be closed), and so that the hot water enters the outlet valve from the parallel radiator group, and then opens the small valve, and the hot water rushes out of the outlet at once, forming the circulation of this parallel radiator.

The valve of this outlet only serves the role of "diversion", and then has no other role.

If yes, if you already have four radiators, and then you add a few more, it may be the reason why you didn't install a circulating water pump. Well, it is difficult to push a large area of water by the heat of the boiler itself, so a temperature-controlled pump circulation system is required.

You see, the first thing to determine is whether a set of radiators in a certain room is not hot or a group of radiators is not hot. First of all, let's take a look at the reason why the room is not hot, most of this situation is caused by poor backwater pipes, how can it be hot if it is not circulated. If there is a group of individual radiators that are not hot, it also means that the internal blockage of the radiator that is not hot is not smooth, resulting in a short circuit.

There are several possibilities for this to occur when the radiator is being modified.

1) The parallel pipeline is generally a single supply and a single return, that is to say, the water supply pipe is a pipe, the return pipe is a pipe, if you want to connect a radiator, you must supply water to the water supply pipeline, and the return water is connected to the return pipe, if the wrong connection will cause the radiator to not be hot.

2) If the original heating pipe is connected in series, that is to say, the water supply and return pipes are one pipe, then if you connect a radiator in parallel, then the water supply and return water are connected to the same pipe, so that the radiator inlet and outlet will be subject to a certain water pressure, so the hot water cannot enter much at all, which will lead to no heat.

3) The water pressure is small, and the radiator is too high, so the pressure is insufficient, resulting in hot water not going up. In this way, see if the entrance valve is opened to the maximum, if it has been opened to the maximum, then there is no way.

4) Pipeline blockage, this situation will also happen, mainly because the new pipe port is not handled well by the workers during operation, resulting in blockage.

Generally, it will be the above situations, and the specific reasons need to be checked by professionals on site.

Answer: How to deal with radiators connected in parallel, one group is hot, and one group is not hot? If the heating at home has been used for a long time, there may be some problems, such as one of the two sets of radiators is not hot, how to deal with it? How to choose radiators for renovation? Here's a little bit about that.

Two sets of radiators in parallel, one group is not hot, how to deal with it.

Precautions for choosing a radiator.

1. Combined with installation occasions.

Generally speaking, every family has several rooms that need to be heated, so it is advisable to choose horizontal radiators, and it is recommended that the installation location is located under the window, which can resist the outdoor low temperature air entering the room. If you choose to choose the vertical type, it is best to install it on both sides of the window close to the ground, so that the vertical radiator can convecite the hot air and make the room temperature more uniform.

Summary: The above is an introduction to the knowledge of two groups of radiators in parallel, how to deal with one group of non-heat, precautions for selecting radiators, etc.

The parallel radiator is hot and not hot, indicating that the heating water is no problem, the main pipeline is also no problem, the problem is on this group of radiators that are not hot, if there is no temperature at all, see whether the temperature control valve of the inlet and outlet is open, the counterclockwise direction is open, the clockwise direction is closed, we screw the two valves counterclockwise to the end, see the radiator situation:

If there is still no temperature at all, that is, the pipeline is blocked, now most of the heating pipes are hot melt pipes, if the hot melt is excessive during welding, it will cause the inner cavity of the pipe to be blocked, then check the welding head near the radiator, there is an obvious intersection of cold and heat is the blockage point, replace, weld from the new;

Answer: Most radiator systems are connected in parallel, which is prone to the situation that the radiator is hot on the top and not hot on the bottom. In this case, it is necessary to do a good job: the inlet and return water of each group of radiators should be in accordance with the way of high in and low out; Then, remove the excess gas from all radiators, adjust the water intake of each group of radiators, and achieve a relatively balanced level.

The question has been released by gas and water.

1. The parallel heating group is not hot.

It may be caused by the different heights of the radiators, the heating is connected in series, you can not consider the height of the radiators, as long as the high and low positions of the two ends of the single group of heating are found well, it may be that the flow of the valve is too small, and there will be a control valve in the home, if the heating is not hot, it is likely that the valve is too small to cause the flow to be too small.

Second, how to solve the problem that the side-by-side heating is not hot.

1. The heating needs to be replaced for "overdue service".

Residents should replace their heating with new ones before they reach the maximum age limit.

2. The heating needs to be deflated if it is "breath-holding".

At the back of each radiator is a manual air release valve that unscrews the rotating shaft to drain the air until the flow is smooth. If the screws of the heating air vent valve have rusted to death, do not twist it rashly, so as not to break the air vent valve and cause the heating hot water to spray out, and ask professional plumbing personnel to come to repair. At the same time, residents living in high-rise buildings should regularly check the heat of the heating, and if there is any uneven heat, they should exhaust the air in time.

3. The pipeline system is blocked and needs to be cleaned.

Normally, geothermal users should clean their pipes every two years, and older heating users should have their pipes professionally cleaned every seven to eight years.

In the case you mentioned, two sets of radiators are connected in parallel, one is hot and the other is not. It means that there is gas in the radiator that is not hot, or there is a blockage at the elbow. It needs to be overhauled.

After the two groups of heaters are used in parallel, one group appears in a state that is not hot, which means that there is a certain fault, so there will be a certain adverse impact on the use, so in order to be able to use it more safely and stably, it must be recommended to repair and deal with it in time.

The reduction or blockage of the circulation space of the heating pipe, the small diameter of the series pipe, and the hydraulic imbalance of the main pipe network system are the reasons why the radiator is not heated in series.

The main reasons why the radiator part is not hot and how to deal with it is:

The temperature of each group of series radiators is gradually reduced under the design conditions of series heating, and the total temperature drop from the temperature of the first group of heating inlet to the last group of return water is generally 20-25.

If it is 5 groups in series, the temperature drop of each group is 4-5. If the first group inlets 80, the second group inlet temperature should be 75-76, and when entering the fourth group, it may be about 60.

When the circulating flow is less than the design condition, the temperature drop of each group of series radiators increases, and the temperature of the first group of heating inlet is 80. It may be cold to the touch when entering the fourth group.

Possible causes and treatment schemes for low circulating flow rates:

1. The hydraulic imbalance of the main pipe network system causes the pressure of the series circuit to decrease, and the main pipe network system should be coordinated and adjusted;

2. The diameter of the tandem pipe is too small, and the resistance loss of the tandem system is too large, so the tandem system should be modified to increase the diameter of the tandem pipe;

3. If there are many sediments in the series system, resulting in the reduction or blockage of the pipeline flow space, the inlet and return valves should be checked to see if they are normal, and if the inlet and outlet valves are normal, the series system should be flushed and the pipeline should be dredged.

The radiator is still not hot after being connected in series, look at the master's operation, which is only for communication and learning.

The pipes may be blocked, first put water on the heating in the bathroom for 30 minutes, if it is kept for 2 hours, it will be fine;

If it doesn't work, there is a problem with the circulating pressure, so you can increase the heating return pipe or increase the small circulating pump.

In fact, this is a common problem of series pipes, first: if the heating water pressure is 5 pressures, then to the first group is 5 pressures, there will be a certain resistance to the passage in the radiator, and there will be 3-4 pressures left when the second group is left, and you can calculate later. Second:

The temperature of the heating water inlet is 60 degrees when it enters the first group, and after the heat dissipation of the first group of radiators, it may be 40-50 degrees when it reaches the second group, but what about the back?

It is recommended to modify the pipes in parallel or install a three-way steering valve on each group.

Check if the main line is hot first.

If you put the water, it will be hot, and if you don't release the water, it will not be hot, indicating that the return water is not smooth, that is, the water in the heating is not flowing, check whether the return valve is not open. Good luck.

The pipeline is blocked, and the gas release valve is added to the highest point of the pipeline to solve it. The air release valve of the radiator can only solve the air blockage of the radiator, and after the air in the pipeline gathers more, it will naturally not be hot. Haha, I also encountered such a problem in the renovation of our old community, and I solved it.

Check whether the heating water circuit is unobstructed. When deflating, it can be slowly from the outside to the inside, proving that the waterway of the water supply should have been opened, and the problem is very likely to be at the backwater end, that is, whether the valve is closed when the square you said walked a circle back to this corner, or there is a filter screen in the backwater place, which is too dirty and blocked. Usually, new radiator users will have this kind of blockage.

All the best!

The return valve is not open, or it is broken!

Close the inlet valve and open the return valve to see if the water can be released, if it can't be released, the return valve is broken!

The hot water is not circulating, he must be cold.

The reason for this is generally an installation problem. We have radiators in every room in the room, but this set of radiators in one room is not hot, but the radiators in the rest of the rooms are hot. Then it is a problem with the installation of this set of radiators.

One of the most common problems is that the water supply or return port of the radiator is clogged during installation. For example, there is too much hemp winding, or too much raw meal belt is winded, resulting in the water inlet being blocked. This is usually the case with radiators installed in parallel.

2.It is also possible that the radiator or pipe is blocked, and we can contact a professional radiator to clean the heating system. 3.

After the radiator is used for several years, it will cause a certain amount of impurities to accumulate inside due to the problem of impurities in the water. If there are too many of these impurities, it will affect the circulation of water supply and return water for our indoor heating. So at this time, you can find a professional radiator cleaning company or personnel to clean us.

When cleaning, high-pressure washing is generally used, and the impurities in the heating pipe and radiator can be brought out with high-pressure water, so that it can be cleaned. Especially for series connections, cleaning is very important. Additional Information:

Radiator leakage and water seepage. If there is a leak in the radiator at home, then you can only close the valve, and turn off the water supply and return valve of the radiator at home, if it is only a certain group of radiators leaking, close this group of radiator valves, if it is a multiple radiator leakage, then close the water supply and return valve in the corridor.