Compliance Of A Combustible Mantel Shelf - Osburn 2000 Installation And Operation Manual

2000 Insert Installation and Operation Manual
8.3 COMPLIANCE OF A COMBUSTIBLE MANTEL SHELF
To ensure compliance of an existing mantel shelf or to install a combustible mantel shelf, refer to
table and figure below. For example, a mantel shelf with a 8'' depth (203 mm) ((X) value) must be
installed at least 22" (559 mm) ((I) value) above the top of the insert (see figure below). Different
mantel shelf dimensions are listed in the following table. However, no combustible mantel shelf
can be installed at less than 22" (559 mm) above the top of the insert. If the depth of the mantel
shelf is not listed in the table below, add 14" (356 mm) to the depth of your mantel shelf to obtain
the safe positioning of your mantel shelf. For example, for a 9" (229 mm) mantel shelf, the safe
positioning would be 23" (584 mm) above the top of the insert (14" (356 mm) + 9" (229 mm)).
MAXIMUM MANTEL
SHELF DIMENSION (X)
8" / 203 mm
10" / 254 mm
12" / 305mm
Note that you can reduce the mantel shelf clearance
with the use of a heat shield, sold separately. See
Appendix 5: Heat Shield Installation (AC01317) for
detail.
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MANTEL SHELF
CLEARANCES
(I)
22" (559 mm)
24" (610 mm)
26" (660 mm)