| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a connection structure capable of easily carrying out connection work of a drain pipe arrangement in a narrow exterior package case. <P>SOLUTION: Bottoms of hot water storage tanks 3, 4 are communicated with each other via a three way valve 24 to form a common drain passage, and opening and closing operation of the three way valve 24 is carried out manually by an operation handle 25 extended from an opening and closing shaft of the three way valve 24. The operation handle 25 is arranged with a predetermined gap in a pipe arrangement connection space of a casing front face. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
