Step 9. Finishing
Figure 35 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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| CEILING |
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| 12" |
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| 11" |
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| 10" |
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| 9" |
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| 31” | |
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| 8" |
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| 7" |
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| 6" |
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| 12” |
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| 5" |
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| 11” |
| 4" |
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| 10” |
2" 3" |
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| 8” | 9” | |
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| 5” | 6” | 7” | |||
1” |
| 4" |
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| 2” | 3” |
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1” |
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TOP FRONT EDGE
OF FIREPLACE
Figure 32.
Minimum Vertical and Maximum Horizontal Dimensions of Combustibles above Fireplace
CAUTION: IF JOINTS BETWEEN THE FINISHED WALLS AND THE FIREPLACE SURROUND (TOP AND SIDES) ARE SEALED, A 300° F. MINIMUM SEALANT MATE-
RIAL MUST BE USED. THESE JOINTS ARE NOT RE- QUIRED TO BE SEALED. ONLY
FINISH WALL MATERIAL MAY BE DRYWALL | |
| - TOP AND SIDES |
| 0 |
0 | 0 |
HIGH TEMPERATURE (300O F/149O C MIN.) | |
| TOP & SIDE SEAL JOINT |
Figure 33. | Sealant Material |
Hearth Extensions
A hearth extension may be desirable for aesthetic reasons. However,ANSI or CAN/CGAtesting standards do not require hearth extensions for gas fireplace appliances.
Step 10. Installing Trim, Logs, and Ember Material
Installing the Trim
Combustible materials may be brought up to the specified clearances on the side and top front edges of the fireplace, but MUST NEVER overlap onto the front face. The joints between the finished wall and the fireplace top and sides can only be sealed with a 300° F. (149° C) minimum sealant.
WARNING: WHEN FINISHING THE FIREPLACE,
!NEVER OBSTRUCT OR MODIFY THE AIR INLET/ OUTLET GRILLES IN ANY MANNER.
Install optional marble and brass trim surround kits as desired. Marble, brass, brick, tile, or other
Do not obstruct or modify the air inlet/outlet grilles. When overlapping on both sides, leave enough space so that the bottom grille can be lowered and the trim door removed.
27