How to solve the problem that central heating is not hot?

What if the heating is not hot? The lack of heat is mostly caused by simple problems. If you are unfortunate enough to encounter a lack of calories, you may wish to take a look at the following. A conservative estimate of 80% may solve your problem. Let's take a look with Jin Jin.

Keywords: How to solve the problem that central heating is not hot

Entering the heating season, we have entered a state of readiness. We may be as busy as a long war, but when a large number of problems break out, it is difficult for us to be busy any more. So, I wrote a small strategy to solve the problem here. On the one hand, the after-sales staff of the heating company can investigate accordingly. On the other hand, when the after-sales master is too busy, the customer service girl can also follow the picture. Help users to judge and solve most problems that the heating is not hot. If you can't make it clear on the phone, you can also shoot this article or send it to users electronically, so that users can solve some problems quickly and reduce the after-sales pressure.

What if the heating is not hot? The lack of heat is mostly caused by simple problems. If you are unfortunate enough to encounter a lack of calories, you may wish to take a look at the following. A conservative estimate of 80% may solve your problem.

This article is applicable to radiator heating users of central heating. These users use heating relatively intensively. When heating began, various problems emerged one after another. As a result, our after-sales phone began to ring, so this article first solved this part of the problem.

Compared with independent heating, the disadvantage of central heating is that the water supply conditions are determined by the heating pipe network, such as water temperature, pressure difference, flow and other factors. Especially in the early stage of heating, there may be problems such as low water temperature and large heat consumption in the cold room, which leads to insufficient heating in the user's home. These factors are beyond the control of users and us, but we must find the root of the problem and make a judgment even if we let customers wait patiently.

This paper does not involve professional knowledge, such as how to judge whether the pressure difference is enough, whether the low flow rate is blocked by the intake pipe or the return pipe, etc. It is an article that ordinary users can understand themselves. As for professional judgment techniques, I will share them later.

When it's not hot at home, first find out whether it's just not hot at home or whether the whole building and unit are not hot; If it's not hot, it may be the reason why the water temperature was low at the beginning of heating, and the temperature at home has not risen yet. Touch water inlet pipe, water separator, radiator, etc. If there is water temperature, but the temperature is not high, about thirty or forty degrees, then wait patiently for two days.

Because the radiator has high requirements on water temperature, the heat dissipation at 40℃ water temperature is only 30% of the rated heat dissipation. At this time, the house and furniture in the user's home are cold, and it is necessary to increase the heat in the environment such as furniture to slowly heat up. The heat exchange station also gradually heats up in the early stage of heating, and the room temperature will naturally rise slowly after the water temperature rises.

See if the radiator can effectively dissipate heat. Some old houses like to wrap the radiator when decorating, or even put it in the cupboard like this, so the heat can't be emitted at all. Let's open the cupboard and ventilate. Similarly, the radiator is blocked by curtains, the radiator is blocked behind the sofa, and so on. On the contrary, there is only one principle. If you want to keep the heat and air flowing smoothly, you can heat your home quickly.

Exhaust: there are a lot of gases in the central heating water, which gather on the radiator to form gas blockage, especially when the hot part of the same radiator is not hot. This is a typical gas blockage phenomenon, which can be solved after exhaust. When you start heating, you should exhaust frequently, even two or three times a day, and it will generally be better after a week.

The thing below is the radiator exhaust bolt, which can be exhausted by loosening it with a small screwdriver.

If you have this old radiator at home, you don't even need tools. You can loosen it by hand, but it's a little scary.

If it is the following automatic exhaust valve, it can reduce some troubles, but because of water quality problems, it may be more likely to be blocked, so in the case of automatic exhaust, use the following methods for manual exhaust.

Pay attention to find a plastic bag to block some when exhausting, and don't let water everywhere.

Some rooms are hot, and some rooms are not hot after ventilation, which may be caused by unbalanced flow, so it is necessary to adjust the flow balance. It is not difficult to adjust the balance. Turn down the hot valve. If you use an ordinary temperature control valve, you should completely close it first and then open it a little, just feel the overflow. The original cold valve needs to be opened, but you don't have to open it completely. You can open them half a circle first, wait patiently and see if they can burn. If not, turn down other hot valves. Similarly, several adjustments will make each radiator equally hot.

It will be easier to adjust the temperature control valve in proportion, as shown in the following figure: Because the opening and flow of this valve are designed according to the characteristics of the radiator, the opening and flow are also proportional. There is an opening indicator scale on the valve body, which can be adjusted according to the opening. The opening of the hot radiator is between 1-2 and the opening of the cold radiator is between 2-3, so the problem can be solved without too much adjustment.

Looking for a property inspection pipeline well: Generally, multifunctional filters are rarely installed indoors in radiator systems, and that's all you can do indoors. Other people's homes are as warm as spring, so it is not hot after making these household radiators. You can inform the property management company to check whether the inlet and outlet valves are open, whether the filter screen is blocked and whether the balance valve is normal.

Please check whether the water inlet pipe and return pipe are connected backwards. If your home is heated in the first year and you find an installation company to install it yourself, then the probability of going back to the pipe is much higher than we thought. If the heating in your house is unfortunately connected backwards, it will definitely not be hot.

Many radiators come in and out. In general, hot water is above, and the cooled cold water sinks below and flows away from return pipe. The radiator is hot above and cold below. If you touch the heat pipe below and the cold pipe above, it may be connected backwards.

If the radiators in your house are all like this, and the import and export of the supervisor are reversed, inform the HVAC company to transfer them to you. However, we have also encountered the overall connection of the main pipeline of the residential heating and heat exchange station, and wait for the property management company to adjust it. Don't turn, he turned back.

In fact, if the heating is not hot now, it is generally caused by two reasons: the water temperature is too low or the external pressure difference is too small. These two problems cannot be solved by yourself.

The following figure shows the relationship between heat dissipation of radiator and water temperature. If the water supply temperature decreases, the heat dissipation will be greatly reduced. The standard heat dissipation is 95℃ water supply, 70℃ backwater, room temperature 18℃. If the water supply temperature is only 40℃, then the heat dissipation of your radiator is only 30%, and it is normal that there is no heating at home.

For central heating users, it is basically the above that can be judged and operated. If the reason is found through judgment, some customers can solve it by themselves, and some can only wait for the change of heating conditions. But with these things, at least when customers are in a hurry, they are not idle, which is also a comfort to customers.