The impact of unauthorized changes to heating system to heat supply of multistorey building

The unauthorized changes to heating system of multistorey residential building pose an actual problem at present. These changes often cause a serious consequences or can destroy the system.The most common type of heating systems in mulytistorey buildings is one-pipe system. It is the most simple type, and the impact of the changes in these systems is bigger, than in another one (for example, two-pipe). In this article tipical unauthorized changes to one-pipe heating system were considered. The most popular chages are replacement of heating devices and pipes, changing the size and the material. The impact of these changes was analysed.