Expansion tank for the heating system. Installation of an expansion tank in the heating system

No residential object is complete without a heating system, an integral part of which is an expansion tank. As you know, this device can be open and closed, on which the principle of its operation and the installation recommendations directly depends. About how to choose the right model of an expansion tank, how to calculate its volume, as well as the advantages and disadvantages of the varieties of equipment, will be discussed further in the article.

Table of contents:

1. What is the expansion tank of the heating system? Varieties of expansion tanks for heating
2. Under what circumstances are expansion tanks needed in the heating system?
3. How to calculate the volume of the expansion tank of the heating system?
4. What you need to know when buying an expansion tank for heating?
5. How to install a closed -type expansion tank in the heating system?
6. How to install an open -type expander?
7. What can cause a malfunction of the heating system after installing the expander?

What is the expansion tank of the heating system? Varieties of expansion tanks for heating

An expansion tank is an important element of an autonomous heating system, which is designed to remove excessive coolant formed during its expansion. That is, this is a kind of safety equipment that prevents a possible rupture of cranes and pipes. The fact is that the coolant begins to respond even to a change in the temperature regime with an indicator of 10 degrees, after which its volume increases by 0.3 %, as a result of which excess pressure forms in the system, which essentially becomes little space. To compensate for these surpluses, expanders, some tanks, are installed, a different name are expansomes. Information about their varieties is submitted in the table.

A closed expansion tank in the heating system is the best option, reliable and long -term. After all, such devices are of their tightness and have a rather presentable look. Most often, these are capsulent designs, filled with membrane material from the inside. Of course, due to its advantages, which is much more than the expansion tank of the open-type heating system has, closed devices are characterized by their fairly high cost. But it is worth noting that in the process of work they do not require regular replenishment of the tank with water, they are allowed to install in any convenient place of the dwelling, and in addition they are not large -sized. Their dimensions are quite modest and it is very convenient.

Under what circumstances are expansion tanks needed in the heating system?

Additional equipment in the system heating is necessary in cases where the owners heat the rooms of large areas, when the entire coolant node should be impressive. Indeed, in the process of operation of the overall devices, a large load appears, the pressure increases to high rates, and this can lead to breakthroughs in the system. Therefore, in such systems, expanders are strictly necessary.

Another indicators for the installation of an expansion capacity are the presence of too long heating pipes, and if heat forms from the effects of a gas boiler, then this is doubly desirable. This proceeds from the fact that gas heater heats the water too quickly to high rates, and, therefore, the pressure in the system is too high, so it should go into additional compartments. In order for the expansion capacity to cope with its task as much as possible, it must correspond to the parameters of the entire heating system, that is, its volume should be sufficient to absorb excess. To do this, it is necessary to make preliminary calculations regarding a particular device. How to do this, look further in the article.

How to calculate the volume of the expansion tank of the heating system?

The volume of the expansion tank of the heating system is one of the most important selection criteria. Before buying a particular model, closed or open type, it is important to know what parameters it should correspond to in order to cope with the accumulated pressure. You can solve the problem of such a plan in several ways, for example, use online calculators on the Internet, which are offered on many resources, or inquiring the volume of the coolant, multiply the data by 0.08. The resulting figure will indicate the parameters of the parameter. For example, if the total volume of the heating system in the building is 120 liters, then the owner will need an expansion tank with parameters of 9.6 liters.

What you need to know when buying an expansion tank for heating?

In addition to the fact that before buying the expander, the owner must know its preliminary volume, he must pay attention to the next nuances, such as:

• type and dimensions of the structure;
• price;
• manufacturer;
• Indications of the maximum and minimum pressure of the device.

Interested in the model should also be equated with the ruling parameters of the heating system in the house, correlates with the boiler used, etc. Experts recommend that you choose the trusted brands, and even better order the service, with the installation and testing of equipment. This will be a guarantee of not only the safe operation of the system, but also its long operational period.

How to install a closed -type expansion tank in the heating system?

The installation of an expansion tank in the heating system is a matter for masters of good experience working with specialized equipment. After all, any errors in the process can lead to the failure of equipment, as well as explosions and other problems. Closed plan designs are deprived of such negative manifestations as corrosion, freezing and an excess of oxygen. On the contrary, they are as practical and hermetic as possible, moreover, they consist of two storage chambers - air and water. In order to introduce this unit into the heating system, you do not need to choose the highest, comfortable, accurate point. He copes with his functions anywhere in any place, the main thing is that the plus temperature dominates in the room above 0 degrees.

For installation, the master needs to prepare a special tools - divorce, step, gas keys, as well as plastic pipes, fuses, etc. It is worth considering that all joints, places of connection of the coolant, pipes, cranes and the expansion tank should be completely sealed. It is strictly forbidden to independently dismantle the membrane design, especially drill it. Installation of the device should not prevent the pressure adjustment in it, the owner must control access to the air channel of the system. It is also important that the installation of an expansion tank in a closed heating system involves the placement of a safety crane in the area of \u200b\u200bthe running reinforcement along the course.

How to install an open -type expander?

The expansion tank for an open heating system is considered the most budget option and despite its shortcomings is no less in demand among users. This device is simply simply made by yourself, only you need to install it in a strictly designated place, and this is not always practical, moreover, the dimensions of such equipment are most often large. Of course, steel is considered recommended material, since its strength provides prolonged operation at least often use plastic containers under water. It is worth noting that a properly mounted expansion tank takes in the crowded out air from radiators, wiring, etc. Therefore, the masters should take into account that it should be located under the slope.

The place of placement of an open -type tank is considered not only the attic area, it can be a staircase, special boxing, etc. This does not mean that it should be isolated from the dwelling, this boils down to the fact that it should be placed at a height. If the housing and the heating system are planned so that when placing the tank in the bathroom, it will be much higher than the coolant, then you can not clean it into the attic area.

It should be noted that when installing in some places of the house, open expanders must be insulated, otherwise the liquid in them will quickly turn into ice. This leads to another disadvantage of this equipment, namely, to high heat loss indicators. Open expanders can be modernized by adding circulation pumps to them, which will allow us to remove the speed of the system to a new level, quickly remove the accumulative masses from the coolant.

What can cause a malfunction of the heating system after installing the expander?

The cause of the improper functioning of the heating system may be an incorrect installation of the expander, as well as its connection. First of all, troubles relate to the use of a poor -quality tool, because all butt places should be sealed and not damaged, for this you need to take care of the presence of gas, stepped and other keys intended to work with metal -plastic pipes, etc. A large number of breakdowns in heating equipment are associated with an incorrectly selected place to install the expander, which complicates access to the device and its constituent elements.

It often happens that the owners choose the equipment to the eye, paying attention primarily to the price, ignoring the parameters related to the correspondence of the coolant and its volume. And this is already considered a strict violation of safety and operation of the structure.

Thus, it can be said that the expansion tank in the heating system is a very important element, the purchase and installation of which must be approached with great responsibility, and not enthusiasm, because not only its functionality depends on compliance with the rules for the installation and accounting of the parameters of equipment, but also the life of the residents of the house . Therefore, the owners need to know that the devices of a closed and open type should be reliably installed, and the water supply fittings should not be constrained by movement during the maintenance of the container under the water.

In addition, in order for the dismantling of the device, if necessary, to be comfortable, you should fix a separate crane of a separate nature in front of the expander. For owners without experience, the installation of the expander does not correspond, it should, in this case, carry out professionals, which will become a condition for a long operational period. Additional information on the topic is presented in the video: