Gas-fired heat generator with incorporated interchangeable boiler which is concentric with the main heat exchanger of the boiler with a smoke extractor fan and automatic control unit

摘要

The generator in question essentially comprises a cylindrical double-walled heat exchanger and an internal concentric boiler, both with the gas combustion gases in contact with the entire heat exchange surface and connected in cascade in the inner water circuit driven by the pump. Comburant air is returned to the gas burners through the presence of an extractor fan in the flue circuit before being emitted to the stack. IMAGE