The heating inlet pipe and the hot return pipe are not hot, what is going on?

The inlet pipe of the heating at home is hot, but the return pipe.

But it's cold. But even in this case, some families report that the temperature at home is still good, reaching 23, 24, but some homes have a very low temperature, basically able to maintain 20 is good. In fact, this is the difference caused by different heating systems.

Let's follow Jin Jin to find out.

If a radiator is found.

The inlet pipe is hot and the return pipe is cold, among the possible reasons:

1. The valve of the radiator is not adjusted properly. The inlet and return pipes of the heating are generally equipped with their own independent control valves, if the valve is closed or opened very little, the heating water will not be able to circulate normally in the pipe. If the inlet valve is open and the return valve is closed or small, or the inlet valve is opened more than the return valve, it may cause the return pipe to not be hot, or the temperature difference with the inlet pipe is large.

At this time, it is necessary to open all the valves, and when the water is circulating, the return pipe will gradually become hot.

2. There is air retention in the radiator. Because there may be air bubbles entering the water during the heating process, along with the heating water circulation.

Entering the radiator, or if there is a loss of heating water during a heating outage or during non-heating periods, air can become trapped in the radiator and the air can hinder the heating cycle. At this time, you need to open the vent valve of the radiator until there is water flowing out and then close it, and then the radiator and return pipe will gradually become hotter.

3. The heating pipe or the pipe in the radiator may be blocked. There may be impurities in the heating water supply, heating pipes and radiators, or endophytic algae, rust, etc., which may be trapped in the radiator, affecting the water circulation inside the radiator and causing the return pipe to not be hot. In this case, you can first try to open the connection between the radiator and the return pipe and return valve, and try to clean it before seeing the effect, if it still doesn't work, you need to ask a professional cleaning radiator or floor heating team to clean the pipe and radiator.

After washing, it can be used normally.

When we find that the return pipe of the radiator is not hot, it is recommended to open the air release valve first, and then fully open the valve of the water inlet pipe and return pipe.

It's blocked, the hot water hasn't passed, or there is air, and the bubbles are blocked.

The heating inlet pipe is not hot, and the return water is hot, what's going on, pro! Hello, happy to answer your <>. What happens to the heat of the water inlet pipe may be that the valve of the water inlet pipe is not opened, or it is broken, and the water released is from the outlet pipe, the end is hot first, and the water inlet is always not hot, which is enough to show that there is a problem with the water inlet pipe, and the water should be released normally is the water from the water inlet pipe, and the water outlet pipe is hot, which proves that you are putting water from the outlet pipe, and the water is reversed.

Suggestions: 1. Install a micro circulating pump--- which can ensure long-term operation and no noise, and add a set of electrical automatic control to synchronize the water pump and the heating boiler. Second, the electronic automatic exhaust valve is added at the remote high end to discharge the gas generated in operation in time--- mechanical automatic exhaust valve cannot achieve such performance.

1. The reason and solution for the heating inlet pipe is not hot and the return pipe is hot: the return water pressure is greater than the inlet water pressure. This can happen because there is too much tandem heating; Or some of the inside is not too passable, so that the heating inlet pipe is not hot and the return pipe is hot.

Solution: If the water inlet pipe is not hot or the heating in your home is not open or there is gas in the heating to cause pressure holding, you can open the exhaust valve to release the gas. The heat of the return pipe is due to the fact that the other heaters are transmitted through.

2. The main reasons why the heating inlet pipe and hot return pipe are not hot are: 1. There is no exhaust in the pipe and heating, and the valve of the return pipe is not opened. In the process of the first operation of geothermal energy, due to the pressure and water resistance in the pipeline, it is easy to produce air locks, resulting in non-circulation of water supply and return and unequal temperature, and should be exhausted one by one.

The heating will have a certain amount of gas in the pipes after the steel column is filled with water, which may lead to "water ingress of the radiator." Open the exhaust valve and vent directly until hot water is discharged. 2. Insufficient circulating power and insufficient water pressure.

There will be a certain amount of water pressure in the inlet and return pipes. Relies on water pressure to circulate hot water. If the water pressure is insufficient, the return pipe cannot flow into the hot water, and the heating return pipe will not be hot.

3. The slope of the backwater pipeline is not enough. If the pressure of the radiator loop is insufficient, it may lead to poor water circulation and cold inlet and return pipes. Workaround:

You can look for the property, you can also find the heating department. A circulating pump can be installed to solve the problem of poor circulation (depending on the situation), I hope mine can help you <>

Do you have any other questions?

The heating inlet and return pipes are not hot, which may be caused by the following reasons:

1. The main valve of the return pipe is not opened.

2. There is a blockage in the return pipe.

3. The power of circulation between the return pipe and the inlet pipe is not strong.

4. The slope of the return pipe is not enough.

Solution: 1. Close the return valve first, and then manually open the exhaust valve of the floor heating for exhaust.

2. Close each valve on the inlet water first, and then open and exhaust all the way.

3. There may be water overflow during the exhaust process, you can find a small basin to catch the water.

4. After half an hour of thorough exhaustion of air in the floor heating pipeline, the return pipe is not hot and related to exhaust.

1. Cause of failure: There is gas in the pipeline, which causes the water supply and return in the pipeline to be unable to circulate normally, resulting in the heating is not hot, which is the initial stage of heating, that is, the period when the heating is just started.

Solution: If the floor heating at home or the return water of the radiator is not hot, you can exhaust the exhaust by yourself, whether it is the radiator or the floor heating manifold has an exhaust valve (also called running air), you can open the exhaust valve yourself for exhaust, until the water is discharged until the water is out of gas.

2. If there are debris in the pipeline, it will also affect the circulation of hot water, resulting in the return pipe not being hot.

Solution: If you need to clean the pipeline, you can ask a professional maintenance master to clean it.

What is the reason why the inlet pipe of Yuanqi is hot, and the return pipe is hot and not hot?

1. Perhaps because there is gas in the pipeline, the water supply and return water in the pipeline can not be circulated smoothly, so that the heating is not hot, this situation occurs in the early stage of heating, that is to say, the period when the heating is just made, this situation is very uncommon. Whether it is a radiator or a floor heating manifold, there are exhaust valves, we can actively open the exhaust valve to exhaust until the discharge is water, no air. 2. There are debris in the pipeline, which leads to partial blockage and affects the circulation of hot water, so we should clean the pipeline.

First of all, turn off the heating supply and return valve in the tube well, then remove the plug in the toilet radiator, connect it to the floor drain of a drainage pipe, and then open the water supply valve in the tube well to discharge water until the water released is clean water, and finally install the removed plug back and open all the valves. 3. The pressure difference between the supply and return water of heating is too small, and the water cannot circulate normally. We need to check the pressure difference setting of the ring pump, the most standard value of the pressure difference between the supply and return water is kilograms.

4. Due to the insufficient slope ratio of the backwater pipeline. If the pressure of the underfloor heating loop is insufficient, the water may not be able to circulate normally, resulting in the phenomenon of inlet water heat and water cooling. You can find a property, or find a heating unit, and even install a circulating pump to deal with the phenomenon of poor circulation.

The reason why the heating inlet and return pipes are not hot is that the heating pipes are blocked, resulting in the inlet and return pipes not being hot.

The solution is: contact the maintenance personnel of the heating pipe in time to clean up the blockage of the heating pipe, and then solve the situation that the heating inlet and return pipes are not hot.

In the early stage of heating, a large amount of air also enters the heating pipe at the same time during the water supply process, and if it cannot be discharged in time, it will accumulate in the pipe, which will cause the heating to be not hot. At the same time, residents living on the upper floors should check the heat of the heating regularly, and if they find that the heat is uneven, they should exhaust the air in time.

Heating inlet pipe heat return pipe is not hot reason:

1. Reason: If the length difference of the heating pipe is too large or the single-circuit heating pipe is too long, it will lead to the situation that the return water is not hot.

Solution: You can install a suitable circulating pump on the main return pipe to adjust the flow balance, and it is best to make some adjustments to the flow rate of each circuit to balance the power to the end of the circuit.

2. Reason: The water in the pipeline will produce a large amount of gas in the heating process, and if it cannot be discharged in time, it will inevitably affect the temperature of heating.

Solution: If the heating is running normally, install the drain pipe on the drain valve of the manifold, and close several circuits at the same time, so that the exhaust valve can be opened to drain the excess water and air in the heating pipe and radiator.

And during this period of central heating, it is best to regularly check the exhaust valve of the heating in the home to ensure that there is no excess gas in it that affects the heating effect.

3. Reason: Because of the pressure difference, there is a problem with the circulation system, and the heating effect is greatly reduced.

Solution: Normally, the pressure difference between the heating supply and the return water should be greater. Once the pressure difference is lower than this value, then the return water will not be hot.

However, it is only necessary to ask the relevant personnel to help adjust the differential pressure valve of the thermal chamber to fundamentally solve the problem.