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Heat & Glo • FB-IN-S, FB-GRAND-S • 783-910 Rev. D • 3/08
6
3
3
Fireplace Size Requirements
A. Minimum Fireplace Opening
Minimum fi replace opening requirements are shown in
Figure 3.1.
• The fi rebrick (refractory), glass doors, screen rails,
screen mesh and log grates can be removed from a
factory built fi rebox in order to gain minimum gas insert
opening requirements.
• Any smoke shelves, shields, baffl es and the metal fl oor
of the unit may be removed from a factory built fi rebox if
attached with mechanical fasteners. If the appliance is
placed on the base of the outer wrap, a ¼ inch airspace
must be provided between the insert and the fl oor of the
outer wrap.
• Cutting of any sheet metal parts of the fi replace in which
the gas fi replace insert is to be installed is prohibited.
Figure 3.1 Fireplace Opening
NOTE: For actual appliance dimensions refer to Section 15.
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 traffi c areas.
WARNING
MINIMUM FIREPLACE SIZE
Location
FB-GRAND-S FB-IN-S
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 fi replace damper do not line up, add 4 inches (102 mm) to minimum
fi replace height for bends in vent pipe.
Î
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