<p>In a Coanda spiral flow unit installation device, a Coanda flow supply device (11) for the supply of a conducting wire or an induction wire is provided at the suction and induction port (6) through which the conducting wire (7) or the induction wire is induced. A feeding device (13) is disposed on the outer side thereof. This device permits more stable installation at high speed and high efficiency. It is possible to install a thin optical fiber over a long distance. <IMAGE></p>
