FIELD: heat power engineering.
SUBSTANCE: invention relates to the field of thermal power engineering, in particular to wall-mounted boilers for heating and preparation of hot water and can be used in decentralized and autonomous heating and hot water supply systems of private houses and flats in buildings with different height and number of floors. Technical result is achieved using a universal design of a hydrogroup, which allows installing a secondary heat exchanger for a double-circuit boiler and to install on the same seats a hydraulic adapter for a single-circuit boiler, which enables to connect an indirect heating boiler to the boiler. Switching between hot water heating and heating modes is carried out by means of a built-in three-way valve with an electric drive.
EFFECT: invention objective is production of universal hydrogroup and accordingly production of universal boilers based on this hydrogroup with possibility of conversion of double-circuit boiler into single-circuit boiler and vice versa.
1 cl, 2 dwg
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