Monessen Hearth DLX18, Installation And Operating Instructions Manual, Page: 12 / 36

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14D9999 14D9999
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CLEARANCES and HEIGHT REQUIREMENTS
Heat resistant material (minimum requirements) with no wooden mantel or other combustible pro-
jection:
To install the gas logs into a fireplace with no wooden mantel, shelf or other combustible projection above the fireplace
opening, measure the heat resistant material height,
per Figure 5, then See
Table A.
Heat resistant materials such as slate and marble must be at least 1/2" thick. Sheet metal should not be installed onto
combustible material.
IMPORTANT: If you cannot meet these minimum clearances you must operate the heater with chimney flue damper open.
See Installing Vented Applications found on page 17.
Figure 5 - Measuring Heat Resistant Material
HEAT RESISTANT REQUIREMENTS FOR SAFE INSTALLATION
MATERIAL
MEASUREMENT DLX18 DLX24 AND DLX28
All Models All Models
12" or more Hood not required. Hood not required.
8" to less than 12" Hood not required. Extend heat resistent material to 12"
or install hood. See Figure 5.
Less than 8" Extend heat resistant Extend heat resistant material to at
material to at least 8" least 8" and install hood.
See Figure
5 OR , extend heat resistant material
to a height of at least 12".
TABLE A - Heat Resistant Material Requirements with no Mantel or Combustible Projection