Gas geyser contained in air tight enclosure - has combustion ventilation air inlet and separate triple walled combustion gas air outlet

摘要

The gas-heated water heater capacity is up to 400 kcal/min in a space containing explosive vapour. It comprises an air-tight enclosure with air inlet from outside of sufficient size to provide combustion air and ventilation of the enclosure, and a triple-walled outlet to outside for combustion products, ventilation air and heat insulation. The enclosure has a door with inspection window and closure catches coupled with electric switches which prevent lighting the heater if door is not closed. The air inlet may contain a damper with electric switch to prevent lighting the heater with damper closed.