2023 Author: Philip Bishop | [email protected]. Last modified: 2023-05-24 22:24
- Air in the apartment
- Air in a private house
- Air removal methods
Before the start of the heating season, there is often a problem of airing the system. This leads to partial or complete blocking of the heating circuits for the flow of coolant through them. As a result, the batteries do not heat up. Also, this problem is often encountered in apartment buildings built according to old projects. They, as a rule, do not have automatic air vents installed or provided at all. And then the question arises: "How to bleed air from a battery in an apartment building?" Usually, when the central heating system is turned on, housing and communal services workers independently bypass all apartments in such houses and release the air. But if this does not happen, then, probably, they forgot about you. And then you need to take matters into your own hands. Call the housing and communal services or deflate with your own hands.
Air in the apartment
So how do you release air from the battery in your apartment? If it is cold in your apartment, although the neighbors below do not know where to get away from the heat. Then most likely you have air in the radiators. To release it, it is necessary to open a specially designed valve. It is usually found at the top of the horse in homes with radiators built into the walls. To open it, you need a special key, which you can make yourself. In the new houses, the radiators are located inside the apartment and they have the so-called Mayevsky taps. It is a nut with a bolt in the middle. The bolt is tapered and covers the air outlet.
It must be remembered that the pressure in apartment buildings is very high, therefore, it is impossible to unscrew the union strongly. All actions are performed slowly and as carefully as possible.
Air in a private house
In a private house, everything is much simpler, because the heating system is autonomous. If necessary, you can always turn it off for a while. Moreover, for effective removal of air in the system, it is just recommended to do this. An airlock in a heating battery in a private house can occur for two reasons:
- Poor air removal after the last repair. After carrying out all types of repairs with the heating system, it is necessary to lower it from each radiator. But if the plug was far enough from the valve, then perhaps they simply did not wait for it to come out.
- Chemical processes in radiators, and airiness is gas formations. In case of poor-quality casting of a radiator with many shells, not only the strength of the radiator is lost, but also the efficiency of its heat transfer decreases.
Why the batteries do not heat up the video will help to understand this issue.
Air removal methods
Depending on the type of heating system, there are several ways to get rid of air in the batteries:
- In a system with natural circulation. In this case, an expansion tank can be used to remove air in the batteries. It should be installed at the highest point of the house, and it has an air valve - a nipple. It is recommended to heat the system well for better efficiency. When heated, the air in the form of steam will begin to rapidly rise upward, thereby necessarily entering the tank.
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In the case of forced circulation, special air vents can be installed. They are also installed at high points for the same reasons. When using such systems, you do not need to vent the air yourself. But, unfortunately, this is in theory, because in practice such devices work well only in the underfloor heating system, when the distribution manifold is low. The automatic nipple is located at its far end from the entrance.
avtomat_nipel
When venting air from batteries in a forced circulation system, it is recommended to turn off the boiler or boiler. Because when the valve is opened, due to a sufficiently high pressure (0.8-1.5 atmospheres), even more air can enter it, and it may end up in other radiators.
To bleed air from the battery, it is necessary to open the valve, as a rule, a Mayevsky valve is installed, and a small container is placed under its outlet. Water will flow there during the release of air. Today there are valves of different types and even universal ones. To open them, you must have an ordinary flat screwdriver or a special 4-sided wrench with you. It is freely sold and is also available in the radiator kit. It is recommended to drain at least 200 g of water, this will allow all the air that might have entered the radiator to escape. After preventive maintenance in the system, the pressure will drop and it must be raised to the desired level. When using Ariston boilers, a pressure of 1.5 to 2 atmospheres is required. It is enough to heat the cottage.
