Hearth and Home Technologies CFX-Crescent - Manual (Page 32)

Heat & Glo • CFX-CRESCENT • 705-900 Rev. P • 12/07 32
3”
9”
10”
12”
4”
5”
6”
7”
8”
11”
NON-COMBUSTIBLE
MATERIAL
FLOOR
4.5” 5.5”
6.5”
7.5”
8.5”
9.5”
10.5”
11.5”
12.5”
13.5”
18”
14.5”
53”
38.5”
2 X 4 FRAMING
ALLOWED AT 43 5/8”
TOP FRONT EDGE
OF FIREPLACE
CEILING
Step 9
Finishing
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 NON-COMBUSTIBLE MATE-
RIAL (USING 300° F. MINIMUM ADHESIVE, IF NEED-
ED) CAN BE APPLIED AS FACING TO THE FIREPLACE
SURROUND. SEE THE DIAGRAM SHOWN BELOW.
CAUTION
Figure 27. Sealant Material
HIGH TEMPERATURE
(300 F/149 C MIN.)
TOP SEAL JOINT
0 0
FINISH WALL MATERIAL
MAY BE COMBUSTIBLE
- TOP AND SIDES
1/2”
1/2”
HIGH TEMP (300 F/149 C MIN.) SIDE SEAL JOINT 0 0
34 1/2”
5 7/8”
NON-COMBUSTIBLE
AREA
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.
NOTE: Add 1 3/8” to these
measurements if measuring from
the top of the door.
Figure 26. Min. Vertical and Max. Horizontal
Dimensions of Combustibles above Fireplace
The following diagram 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 non-combustible materials may be used
to cover the black fireplace front.