| 摘要 |
The present invention is provided with a main burner (3) that heats a water pipe inside a can body (2), and a pilot burner (4) that is for igniting the main burner (3). Continuous combustion is performed in the pilot burner (4). In the pilot burner (4), gas is supplied by a gas booster (20) or an ejector (21), or continuous combustion is suspended when the combustion amount of the main burner (3) is equal to or greater than the set amount, or when the pressure of gas supplied to the pilot burner (4) is equal to or less than a set pressure. |
