Therefore, in such systems can be used safely only heavy and unsightly cast iron radiators, which are particularly resistant to extremes of temperature and oxygen. On a modern and efficient heating devices have to forget. The most common are systems with a circulating pump can use a pipe with a smaller cross section, and therefore, ultimately prove to be more "economical". In addition, as a rule, they closed, that is, they use the diaphragm expansion tanks in which the coolant is not contact with atmospheric air. This allows the diversity of modern space heaters – bimetal and aluminum radiators, steel panel and tubular heaters, finally, design radiators. However, and here the problem of dissolved oxygen and corrosion does not cease to be relevant.
If, on domestic regulations, the oxygen content in the coolant should be no more than 0,02 g / l, in practice and in the central systems, and autonomous (with intensive feeding of) this value is ten to twenty times more. It is therefore reasonable to use modern, corrosion-resistant pipes, for example, such as tubular steel radiator Charleston Pro (Development Zehnder) with a special internal anti-corrosion coating. "Pitfalls" Mounting As previously mentioned, assembly defects are manifested at once. Often "in place" they are difficult to observe even for an expert. Shortcomings declare themselves in the worst possible moment – during the heating season. They appear usually leak coolant and reducing power of the system, because of what housing does not get the right amount of heat. Major errors installers, for which then pays the customer, are fairly typical.