Heat & Glo • FB-IN, FB-GRAND • 783-908 Rev. J • 2/07
6
3
3
Fireplace Size Requirements
A. Minimum Fireplace Opening
Minimum
¿
replace opening requirements are shown in
Figure 3.1.
• The
¿
rebrick (refractory), glass doors, screen rails,
screen mesh and log grates can be removed from a
factory built
¿
rebox in order to gain minimum gas insert
opening requirements.
• Any smoke shelves, shields and baf
À
es may be removed
from a factory built
¿
rebox if attached with mechanical
fasteners.
• The metal floor of the factory built firebox may be
removed to facilitate the installation of the insert only
when a 1/4 inch airspace is provided between the insert
and the
À
oor of outer wrap.
Figure 3.1 Fireplace Opening
NOTE: For actual appliance dimensions refer to Section 16.
B
2 in.
50.8 mm
A
C
TOP VIEW
D
FRONT VIEW
Fire Risk
Provide adequate clearance:
• Around air openings
• To combustibles
• For service access
Locate appliance away from traf
¿
c areas.
WARNING
MINIMUM FIREPLACE SIZE
Location
FB-GRAND
FB-IN
Inches
Millimeters
Inches
Millimeters
A
Front Width
35
889
30-1/4
768.4
B
Rear Width
22-5/8
574.7
19
482.6
C
Depth
14-1/8
358.8
14-1/8
358.8
D
Height 25-3/4
654
22-1/2
571.5
* NOTE: If exhaust collar on insert and
¿
replace damper do not line up, add 4 inches (102 mm) to minimum
¿
replace height for bends in vent pipe.
