Why the pressure in the gas boiler drops

Most often, users of even the highest quality devices encounter a problem in their performance and do not know what this is connected with. The most common is a significant decrease in pressure. However, this occurs exclusively in systems in which forced circulation. With natural, another defect may occur. In this article, we will analyze the main points of the first of the presented situations that every owner of a gas boiler should know.

What should be the norm of water pressure in a gas boiler

Of course, it is necessary to monitor the optimal parameters at which the work process is as efficient as possible. When assembling the structure, manufacturers build in a special apparatus that allows them to perform performance monitoring functions. The information that he collects can be seen on the panel and, based on this, analyzed. So one and a half or two atmospheres is considered to be an ideal measurement. If this shows you a number greater than or less than the named interval, respectively, this indicates a problem.

In addition, it is worth remembering that there are several types of pressure:

• Static With it, the indicators of the heating system are at rest.
• Dynamic. Passes through all structural elements.
• The maximum. The device may stop working if the level is much higher.

It is also common for pressure to change readings from smaller to larger during unit warm-up.

Why pressure in a gas boiler may drop: common causes

To always be ready, even in sudden and unpleasant cases, you must know all possible sources from which various difficulties may arise. Consider the main ones, the most common.

The boiler discharges excess air

The reason for the occurrence may be the fact that you have not previously used the device. Naturally, at the first start-up, the device will throw out excess air mass. Such an independent action can be explained by the presence of automatic air vents. If you have a purchase with a wall lock, you can turn the screw specifically designed for ejection. Then air will go, after which water will flow. This is necessary for further functioning.

An air outlet is observed in the expansion tank

The air outlet may be for the following reasons:

• Damage to the compensator, therefore, it will not ensure the maintenance of a given pressure.
• Loss of tightness of the tank. Because of this, the atmosphere is thrown out of it. Subsequently, you can notice a lightning-fast decrease in pressure.
• Do not forget about cases arising from prolonged use - a breakthrough of the membrane that is inside the tank. It is very difficult to break through, however, the likelihood of an incident exists, so it is easily recognized.
• The next reason may be the spool. It is located at the top of the instrument and gradually bleeds air. Such a process can take from several months. As a result, an unfavorable outcome of events is possible - elimination of the entire air mass and filling of the coolants of the entire expansion unit.

Leaking heating system

Perhaps the most unpleasant situation is to flow, because the water begins to splash immediately or appear gradually. In any case, sooner or later it will become noticeable to others. This occurs due to damage in the upper or lower part of the warm water floor. Correcting what happened is a long and costly process. However, nothing is impossible.

Why else can pressure drop in a double-circuit heating boiler

Not only the points mentioned above deserve attention. Other problems are distinguished:

• If the service life exceeds a sufficient temporary amount, then, most likely, the boiler automation is just out of order. Because of this, microscopic cracks are possible, which are sometimes difficult to notice with the naked eye.
• When crossing pipelines, the device used may leak.
• The boiler is not suitable for use due to improper selection.
• Poor installation of the entire heating system.

Why does the boiler pressure drop if there are no leaks

Of course, in addition to the main problems, there are indirect ones. For example:

• The formation of so-called traffic jams. They can be detected due to improper operation of the valve for bleeding air - it becomes clogged or the regulation is incorrect.
• Also, due to a violation of technical requirements, when coolant systems are filled, low pressure formation is possible.
• Poor sealing also contributes to air entering the system.
• Suction of the atmosphere when compounds are detected loose.

All of these sources are accompanied by typical noises and sounds. Therefore, they can be quite easily identified and proceed to eliminate them. Otherwise, this will lead to new problems that will be much more difficult to cope with. In addition, not only discomfort for residents of the building may occur, but also a danger to people around.

How to increase the pressure in the boiler, depending on the cause of the violation

Here are some troubleshooting tips.

1. The most common is a leak. It is recommended that you examine the entire structure as thoroughly as possible and find the place of its occurrence. Upon detection, the next step is to cut off the unit from the system. If the pipe is damaged, then you need to make a replacement: remove the old one and install a new one in place. It is desirable to carry out the same fraud in case of damage to the bay. If corrosion occurs at the pipe joint, the area can be sealed.
2. Preliminary, it is always recommended to reproduce preventive measures. This will provide a guarantee of protection against air congestion. Pay attention to the correct connection of the heating structure, as well as all possible valves and components. Before starting work, always check that it is functioning correctly. The test is as follows: apply pressure to the compressor and monitor the parameters. If it does not weaken in 30 minutes, everything is fine.

It is strictly forbidden to carry out repairs of all equipment on their own. It is necessary to call a special service, the qualified masters of which will quickly be able to eliminate all defects and configure the device for further high-quality work. However, there are situations where an urgent correction of the device is required. Then even people who do not have certain knowledge and skills must begin to partially or completely eliminate the breakdown. And of course, the first thing to do is figure out which group of reasons yours belongs to.