In hydronic radiant heating systems with natural circulation of the circulation pressure is measured only in tens millimeters of water. Such small pressure does not allow to arrange the data systems in buildings having a large extent, they also require the use of PEX pipe diameters significant, leading to a large consumption of metal. These deficiencies have no hydronic radiant heating system with an artificial circulation. They created water circulation by Taco pumps. Pumps, operating in closed rings, heating systems, water-filled, water does not raise, but merely a move to create the circulation, and therefore called the circulation.
The circulation pump is included, usually in the back line of the heating system to increase the service life of parts that interact with the hot water. Systems of hydronic radiant heating with artificial circulation. Hydronic expansion tanks type Amtrol is connected not to the flow, and to the back line.
In heating systems it is expedient to use special circulating pumps that move significant amounts of water and developing a relatively small pressure. This low-noise horizontal vane pumps of centrifugal type, connected in a single unit with electric motors and fastened directly to the tubes (without foundation), such as pumps Grundfos UP15-10SU7P/TLC.
The use of circulating pump heating systems can significantly increase the length of the pipeline and reduce metal heating by reducing the diameters of distributing pipes. In addition, with the installation of circulating pump to allow the use of new circuit design of the heating system, such as failure of the upper wiring lines. However, the use of pump heating systems is only possible if reliable power supply.
In the absence of boilers for solid fuel fires with long burning can be applied to hydronic radiant heating tank, battery type and the circulating pump Taco 007-F5 Cast Iron. Such a system can significantly reduce operating costs for maintenance of the generator of heat. The principle of such a heating system is that the thermal capacity of heat source is chosen 3 times higher than the heat of heated homes, due to which it is possible not only to provide compensation to heat homes, but also to accumulate heat in a special tank, which starts on decommissioning boiler . The volume of the storage tank is selected so as to discharge his time was at least 8 hours (when using thermal generators twice a day, 4 hours). For efficient operation of the system storage tank must be thoroughly insulated to eliminate wasteful heat loss.