Monessen Hearth TPB18 - Manual (Page 12)

12 70D0004
Measure
this
distance
Heater in
Fireplace or
Firebox
Heat
Resistant
Material
Figure 5 - Measuring Heat Resistant Material
Heat resistant material (minimum requirements) with no wooden mantel or other combustible projection:
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. Refer to “Installing Vented Applications” found on page 18.
TABLE A - Heat Resistant Material Requirements with no Mantel or Combustible Projection
CLEARANCES and HEIGHT REQUIREMENTS
HEAT RESISTANT
MATERIAL
MEASUREMENT
REQUIREMENTS FOR SAFE INSTALLATION
TBP18 TBP24 TBP30
12" or more Hood not required. Hood not required. Hood not required.
8" to less than 12" Hood not required. Extend heat resistant material
to 12" OR install hood. see
Figure 5. Extend heat resistant material
to 12" OR install hood. see
Figure 5.
Less than 8" Extend heat resistant material
to 8" AND install hood. see
Figure 5. Extend heat resistant material
to 8" AND install hood. see
Figure 5. OR, extend heat
resistant material to a height of
at least 12". Extend heat resistant material
to 8" AND install hood. see
Figure 5. OR, extend heat
resistant material to a height
of at least 12".