FIELD: heating.
SUBSTANCE: heating device operating on gas includes a gas inlet, an air outlet, a valve, a control device, a burner, a heat exchanger and a fan. The valve is connected to the gas inlet. The control device is connected to the valve and has the possibility of controlling the valve in order to regulate air-and-gas mixture composition. The burner has the possibility of receiving air-and-gas mixture and its combustion. The heat exchanger is connected to the burner and has the possibility of performing the process of heat exchange and distribution of heated air. The fan is located after the heat exchanger in the flow direction and made so that it can suck gaseous combustion products through the heat exchanger and negative pressure can be created for suction of air-and-gas mixture through the burner and a system with valves and Venturi tubes. Another object of the invention is a system containing the above heating device.
EFFECT: invention allows increasing safety of the heating device.
15 cl, 7 dwg
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