Osburn Horizon OB04010, Installation And Operation Manual

Page: 53 / 80

HORIZON – Installation and Operation Manual 53
7.6.2 Exterior offset installation
7.6.3 Installation instructions
WARNING
•
THE STRUCTURAL INTEGRITY OF THE FLOOR, WALL, AND CEILING/ROOF MUST BE MAINTAINED.
•
THE FLOOR AND WALLS BELOW THE ATTIC MUST BE INSULATED USING THE SAME INSULATION.
A
To insure a good draft, it is
recommended to have a length of 18
inches from the top of the unit to the
first offset. However, starting using a
30° or 45° elbow is also approved.
B
Mandatory measure of 15 ft. from the
bottom of the fireplace to the top of
the outside chimney.