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Heat & Glo • CFX-CRESCENT • 705-900 Rev. P • 12/07
19
For Vertical Runs - The vent system must be
supported every eight (8) feet (2.4 m) above the
fireplace flue outlet by wall brackets.
To install support brackets for vertical runs:
• Attach wall brackets to the vent pipe and secure
the wall bracket to the framing members with
nails or screws.
Use wall brackets to
support vertical runs
every 8 feet (2.4 m)
above the fireplace flue
outlet.
Figure 11. Installing Support Brackets
4. Install Firestops
For Horizontal Runs - Firestops are REQUIRED
on both sides of a combustible wall through which
the vent passes. The exterior firestop is not required
at the termination cap for model CFX-Crescent. (SLK-
01TRD is required for horizontal terminations).
To install firestops for horizontal runs that pass
through either interior or exterior walls:
• Cut a 10-inch by 10-inch (254 mm X 254 mm)
hole through the wall. The center of the hole is
one (1) inch (25.4 mm) above the center of the
horizontal vent pipe.
WALL BRACKET
WALL STUD
8 FT.
(2.3m)
FLUE
OUTLET
1 INCH MIN.
(25.4m)