Osburn Horizon OB04010, Installation And Operation Manual

Page: 39 / 80

HORIZON – Installation and Operation Manual 39
6.3.5.4 Option #4 - Installation raised between 8" and 12" from floor
• A 1.00 R value for the hearth extension is required. The non-combustible hearth extension floor area
must extend at least 20" (508 mm) (B) in front of the hearth.
• The upper and lower angle, for the full width of the floor protection, must be protected 2" horizontally
and 2
"
vertically (
E
) by a bent and continuous piece of sheet metal (not included). Apart from these two
corners, the sheet metal does not have to cover the rest of the wall between the base of the fireplace
and the floor.
• An 84" clearance between the fireplace base and the ceiling
(A)
must be respected.
MINIMUM MEASUREMENTS
A 84" (2134 mm)
B 20" (508 mm)
C
Between 8" and 12 "
E 2" (51 mm)