MAIN ERRORS DURING THE REPAIR OF EXISTING CENTRALIZED HEATING SYSTEMS OF THE HOUSING FUND

The article examines the main mistakes in the repair, which is not carried out centrally, but at the expense of the owner of the apartment, of the existing heating systems of the housing stock of buildings from the middle to the end of the twentieth century. The heating systems in these residential buildings are central, single-pipe (with upper or lower wiring), not adjustable, made of steel pipelines, either cast-iron radiators or steel "Accord" ("Comfort") convectors are installed as heating devices. Connection schemes of heating systems to heat networks are dependent. A decrease in the temperature of the heat carrier for the heating system of the residential part is provided with the help of an elevator unit. These systems have no regulation, neither local nor individual. These heating systems have both physical and moral wear and tear. Modern heating systems, which belong to the construction of the twenty-first century, are centralized or decentralized two-pipe heating systems, which are made of non-metallic pipelines, and bimetallic radiators or steel panel radiators are installed as heating devices. As a rule, these heating systems have both local and individual regulation. The article examines the difference between the concepts of repair and reconstruction; the consequences of changing steel pipelines to non-metallic ones; errors when choosing the type of pipes; replacement of existing heating devices with other types, with a different heat capacity; changes in the configuration of the heating system, additional installation of heating devices, creation of a heating system "Heat floor" in the apartment; reconstruction of one-pipe unregulated heating systems into one-pipe regulated ones with the installation of radiator valves and thermostatic elements. In addition, the concepts of heating, heat capacity, heat load, types of regulation of heat supply systems are considered. The main conclusion is that any work related to the reconstruction of the heating system of the apartment leads to an imbalance of the hydraulic and thermal regime of the indoor heating system of the residential building and must be carried out with the knowledge of the balance keeper of the residential building, in accordance with the technical conditions of the heat supply organization and on the basis project solutions.