Monessen Hearth MJ27NR-S Installation And Operating Instructions Manual page 8

CLEARANCES and HEIGHT REQUIREMENTS
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 5, then refer to Table B�
Figure 5. Measuring Heat Resistant Material for Mantel
FP1998
TABLE B –
heat resist mantel
Heat Resistant Material Heights and Mantel Location
Heat Resistant Requirements for Safe Installation
Material w/Wood Mantel Shelf or other
Measurement
12" or more Hood not required. Observe profile
(side elevations) shown in Figure 7.
8" or less than 12" Install hood and observe profiles in
Figure 6; OR extend heat resistant mate-
rial to at least 12" and observe profiles in
Figure 8�
Less than 8" Extend heat resistant material to at
least 8", install hood and observe pro-
files in Figure 6; OR extend heat resis-
tant material to at least 12" and observe
profiles in Figure 7�
Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17
8
8" or More of
Heat Resistant
Hood
Materials
Heater in
Fireplace or
Firebox
FP1998
Combustible Projection
MJ27
"MOJO" Series Unvented Gas Log Sets
12"
10"
8"
6"
Heat
2
1 /2
Resistant
Material
Heater in
Fireplace or
Firebox
FP1999
Figure 6. Minimum Mantel Clearance with Hood�
FP1999
min. mantel clearance
Heat Resistant
Material
FP2001
Figure 7. Minimum Mantel Clearance with No Hood�
FP2001
minimum mantel clearance no hood
"
8" 14 "18 " 22 " 26"
1 /2 5 /8 1 /2
Hood
Example: A mantel may
project from the wall a max-
imum of 2 ⁄ " at a minimum
1
2
of 8" above the opening,
and a maximum of 6" at a
minimum of 14
the opening�
10" or Less
12" min. 28"
Heater in Fireplace
or Firebox
Example: The bottom of
the mantel may project
from the wall a maximum
of 10" at a minimum of 28"
above the opening�
⁄ " above
1
2