14
For Vertical Runs
The flue system must be supported every eight
(8) feet (2.4M) above the heater flue outlet by wall
brackets.
To install support brackets for vertical runs:
Attach wall brackets to the flue pipe and se-
cure the wall bracket to the framing members
with nails or screws.
Use wall brackets to support vertical runs every
8 feet (2.4M) above the heater 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 flue passes.
To install firestops for horizontal runs that pass
through either interior or exterior walls:
Cut a 12-inch by 12-inch (305 mm X 305 mm)
hole through the wall. The center of the hole
is one (1) inch (25mm) above the center
of the horizontal flue pipe.
Position the firestops on both sides of the hole
previously cut and secure the firestops with nails
or screws.
The heat shields of the firestops
MUST BE
placed towards the top of the hole.
Continue the flue run through the firestops.
Figure 12 Hole and Flue Pipe
Figure 13 Heat Shield, Interior and Exterior
Firestops
For Vertical Runs -
One ceiling 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.
WALL
BRACKET
WALL
STUD
8 FT. (2.4m)
FLUE
OUTLET
1” MIN.
(25mm)
FLUE PIPE
1" (25mm)
12" (305mm)
12" (305mm)
TRIM HEAT
SHIELD IF TOO
LONG, ADD TO
SHIELD IF TOO
SHORT
EXTERIOR
FIRESTOP
INTERIOR
FIRESTOP
HEAT SHIELD
