Heat-N-Glo BE-41 Installer's Manual page 18

• Position the firestops on both sides of the hole previ-
ously cut and secure the firestops with nails or screws.
• The heat shields of the firestops MUST BE placed to-
wards the top of the hole.
• Continue the vent run through the firestops.
Figure 19. 12" x 12" Hole and Vent Pipe
HEAT SHIELD
INTERIOR
FIRESTOP
Figure 20. Heat Shield, Interior & Exterior Firestops
12"
(305mm)
12"
(305mm)
1" (25.4 mm)
VENT PIPE
TRIM HEAT
SHIELD IF TOO
LONG, ADD TO
SHIELD IF TOO
SHORT
EXTERIOR
FIRESTOP
For Vertical Runs - One ceiling firestop is REQUIRED at
the hole in each ceiling through which the vent passes.
To install firestops for vertical runs that pass through ceilings:
• Position a plumb bob directly over the center of the verti-
cal vent component.
• Mark the ceiling to establish the centerpoint of the vent.
• Drill a hole or drive a nail through this centerpoint.
• Check the floor above for any obstructions, such as wir-
ing or plumbing runs.
• Reposition the fireplace and vent system, if necessary,
to accommodate the ceiling joists and/or obstructions.
• Cut an 11-inch X 11-inch (280mm X 280mm) hole through
the ceiling, using the centerpoint previously marked.
• Frame the hole with framing lumber the same size as the
ceiling joists.
11" (280 mm)
NEW
FRAMING
MEMBERS
CEILING
Figure 21. 11" x 11" Hole & New Framing Members
20
11" (280mm)
CHIMNEY
HOLE
EXISTING CEILING
JOISTS