FIELD: instrument engineering.
SUBSTANCE: present invention includes: three-way valve configured to change the course of the heating water in order to selectively supply heating water, heated in the main heat exchanger, to the heating pipe connected to the place to be heated and to the heating pipe connected to the hot water heat exchanger. Bypass pipe connecting the three-way valve and a heating water return pipe connecting the place to be heated and the main heat exchanger. Bypass pipe made with the possibility of providing a channel separate from the heating pipe connected to the place to be heated, and a heating pipe connected to the hot water heat exchanger and formed on one side of the three-way valve. Check valve provided in the bypass pipe in order to allow the flow of fluid in only one direction from the three-way valve towards the heating water return pipe, when a heating pipe connected to the place to be heated, or a heating pipe connected to a heat exchanger for supplying hot water. First water pipeline module is equipped with a three-way valve, a by-pass pipe and a check valve, which are built into it, and are adapted to provide a channel, through which the heating water that is supplied from the main heat exchanger is returned through the place to be heated.
EFFECT: object of the present invention is to provide a boiler having a check valve integrated in a water pipeline, the boiler being designed to simplify and miniaturize the structure of the water supply system.
11 cl, 15 dwg
