FIELD: water heating systems.
SUBSTANCE: invention relates to water heating systems, in particular to autonomous heat supply systems. In a heat supply system containing a heat generator, an expansion tank, a supply pipeline, upper and lower bottling pipelines, direct and return pipelines, heat exchangers (heating radiators), a control overflow into the sewer, shut-off and control valves, an additional outlet pipeline is installed from the expansion tank with a slope of 0.005-0.015 m/m to the horizon and having a diameter 2-2.5 times smaller than the upper pouring pipeline connected to the left riser, while the outlet pipeline is connected to the expansion tank at the level of 1/3-2/3 of its working height, and the heat generator is installed below the installation level of the lowest heat exchangers (heating radiators), but not more than 3 meters.
EFFECT: natural continuous circulation of the coolant is provided without the use of an electric circulation pump in a constant mode, freezing of the coolant in the elements of the heat supply system, namely the expansion tank and the additional outlet pipe, in the attic unheated area of the building during low outdoor temperatures is excluded.
2 cl, 4 dwg
