Step 9. Finishing
Figure 36 shows the minimum vertical and corresponding maximum horizontal dimensions of fireplace mantels or other combustible projections above the top front edge of the fireplace. See Figures 2 and 3 for other fireplace clearances.
Only
!WARNING: WHEN FINISHING THE FIREPLACE, NEVER OBSTRUCT OR MODIFY THE AIR IN- LET/OUTLET GRILLES IN ANY MANNER.
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| 12” |
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| 11” |
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| 10” | 31” |
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| 9” | |
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| TO CEILING | |
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| 8” | |
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| 7” | 18” |
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| 6” | |
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| 17” | |
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| 5” | |
| 4” | 16” | |
| 15” | ||
3” |
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| 14” |
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| 13” |
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| 12” |
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| 11” |
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| 10” |
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| 9” |
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1” | 4” |
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| 1” | TOP FRONT EDGE OF FIREPLACE | |
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Figure 36. |
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Minimum Vertical and Maximum Horizontal Dimensions of | |||
Combustibles above Fireplace |
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NOTE: There are 3 metal tabs holding the
FINISH WALL MATERIAL MAY BE
COMBUSTIBLE - TOP AND SIDES
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BOARD | 0 |
0 | 0 |
HIGH TEMPERATURE (300°F / 149°C MIN.)
TOP & SIDE SEAL JOINT
Figure 37. Sealant Material
CAUTION: IF JOINTS BETWEEN THE FINISHED WALLS AND THE FIREPLACE SURROUND (TOP AND SIDES) ARE SEALED, A 300°F. MINIMUM SEALANT MATERIAL MUST BE USED. THESE JOINTS ARE NOT REQUIRED TO BE SEALED. ONLY
Hearth Extensions
A hearth extension may be desirable for aesthetic reasons. However, ANSI or CAN/CGA testing standards do not require hearth extensions for gas fireplace appliances.
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