Osburn AC01340 - Manual (Page 8)

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Install the heat distribution blower in a location where, you will have access for
maintenance and somewhere the fan’s noise will not be disturbing.
*Note: The heat distribution blower must be positioned at a minimum distance of 3 feet
from the fireplace and outside of its enclosure.
*Note: The length of the insulated flexible pipe between the fan and the air outlet must
be no less than 12 feet.
*Note: A minimum clearance to combustible materials of 2 inches from the heat
distribution blower is required.
*Note: The heat distribution blower can be installed horizontally, vertically or at any
angle.