20 Heat & Glo • SL-350TRSI-AUE • 2089-902 Rev. B • 6/06
For Vertical Runs
The flue system must be supported every eight (8) feet
(2.4 M) above the heater flue outlet by wall brackets.
To install support brackets for vertical runs:
• Attach wall brackets to the flue pipe and secure the
wall bracket to the framing members with nails or
screws.
Figure 24. Installing Support Brackets
4. Install Firestops
For Horizontal Runs - Firestops are REQUIRED on
both sides of a combustible wall through which the flue
passes.
To install firestops (heat shield) for horizontal runs that
pass through either interior or exterior walls:
• Cut a 10-inch by 12-inch (254 mm X 305 mm) hole
through the wall.
• Position the firestops on both sides of the hole pre-
viously cut and secure the firestops with nails or
screws.
• The pipe opening of the firestops MUST BE placed
towards the bottom of the firestop.
• Continue the flue run through the firestop.
WALL BRACKET
WALL ST UD
8 FT.
(2.4m)
FLUE
OUTLET
1 INCH MIN.
(25mm)
10" (254mm)
12" (305mm)
INTERIOR
WALL SHI ELD
Figure 25. Flue Pipe & Firestop
For Vertical Runs - One firestop is REQUIRED at the
hole in each ceiling through which the flue passes.
To install firestops for vertical runs that pass through
ceilings:
• Position a plumb bob directly over the center of the
vertical flue component.
• Mark the ceiling to establish the centerpoint of the
flue.
• Drill a hole or drive a nail through this center point.
• Check the floor above for any obstructions, such as
wiring or plumbing runs.
• Reposition the heater and flue system, if neces-
sary, to accommodate the ceiling joists and/or ob-
structions.
• Cut a 10-inch X 10-inch (254mm X 305mm) hole
through the ceiling, using the firestop pipe opening
as a guide.
• Frame the hole with framing lumber the same size
as the ceiling joists.
CEILING
NEW
FRAMING
MEMBERS
EXISTING CEILING
JOISTS
CHIMNEY
HOLE
10" (254mm)
10” (254mm)
Figure 26. Hole and New Framing Members