Osburn AC02006 - Manual (Page 8)

8
6
Remove the components located in the upper area of the firebox in order to
access the chimney flue. Depending on the type of insert the following
component can be removed: secondary air tubes and cutter-pins, supports and
fire-bricks, insulation board or wool, insulation weight, etc. It is important to note
the order in which the components were removed from the insert to use the
reverse sequence in step 9.