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FIGURE 18. 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 ver-
tical 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 necessary, to
accommodate the ceiling joists and/or obstructions.
• Cut a 25.4cm X 30.5cm 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.
FIGURE 19. Hole and New Framing Members
CEILING
NEW
FRAMING
MEMBERS
EXISTING CEILING
JOISTS
CHIMNEY
HOLE
10" (25.4 cm)
10” (25.4 cm)
10" (25.4 cm)
12" (30.5 cm)
INTERIOR
WALL SHIELD