FIELD: heating systems.
SUBSTANCE: invention is intended for water heating and can be used in heat engineering. Boiler includes furnace unit with furnace chamber and gas burner, heat exchange surface with upper heat exchanger located above furnace chamber and having bank of copper finned tubes. In addition, heat exchange surface is equipped with lower heat exchanger in the form of hollow element from plate material located along the perimetre around the furnace; its water cavity is connected by means of cross over branch pipe with upper heat exchanger located above it, which is copper-cast-iron-steel. Furnace chamber with gas burner, lower and upper heat exchangers of heat exchange surface and collector of gas combustion products are integrated in a module. At least two modules are located and fixed one above the other so that their heat exchange surfaces are connected in series as to water circulation to a common circuit. Modules are placed in the housing made in the form of a cabinet, which is equipped with water inlet and outlet branch pipes connected to lower heat exchanger of lower module and to upper heat exchanger of upper module respectively. At that, each module is provided with microprocessor control with instrument control panel common for the boiler.
EFFECT: invention provides minimisation of room area occupied with the boiler, increase of boiler efficiency and maintainability.
19 cl, 3 dwg
