MartinLogan VENT-FREE FIREPLACE SYSTEMS 33ISDG - Manual (Page 12)

12 23D8036
10"
12"
14"
26"
8"
12"
10"
8"
6"
2 1 /
2
"
Hood
No combustible materials
within 8” of opening.
Do not cover louvers.
No combustible materials
within 8" of opening.
Do not cover louvers.
Hood
8"
4"
2 1 /
2
"
6"
8"
HEAT RESISTANT MATERIAL (MINIMUM REQUIRE-
MENTS) WITH NO WOODEN MANTEL OR OTHER COM-
BUSTIBLE PROJECTION
Heat resistant material (minimum requirements) with wooden mantel
or other combustible projection:
To install the heater with a wooden mantel shelf or other combustible
projection above, first measure the heat resistant material shown in
Figure 7.
CLEARANCES and HEIGHT REQUIREMENTS
Example:
A mantel
may project from the
wall a maximum of
2
1 /
2
" at minimum of 8"
above the opening, and
a maximum of 12" at a
minimum of 26" above
the opening.
Figure 7 - Measuring Heat Resistant
Material for Mantel
Figure 8 - Minimum Mantel Clearance
Figure 9 is an example of an unsafe mantel installation. The
mantel projects 4" at 8" above the opening, exceeding the maxi-
mum acceptable distance of 2
1 /
2
". The mantel also projects 8"
at 10" above the opening, exceeding the maximum acceptable
distance of 6".
If your mantel profile is unsafe, you may either:
• Raise the mantel to an acceptable height or,
• Remove the mantel.
Figure 9 - Unsafe Mantel Clearance