摘要 |
<p>The device has a lower annular unit (11) mounted at a surface of a chimney furnace, and an upper annular unit (13) with a circular flange and a connecting piece fastening at a chimney tube. A securing unit (17) is used after mounting the device to connect the upper annular unit with the lower annular unit in such a manner that a pivoting movement of the lower annular unit is possible around a pivoting axis of the upper annular unit.</p> |