Hearth and Home Technologies BE-36-C Installer's Manual page 25

DVP, SL-D and SL-Flex Series Venting:
STEP 4. Install Firestops
For Horizontal Runs - Firestops are REQUIRED on both
sides of a combustible wall through which the vent passes.
NOTE: Model DVP-TRAP or SLK-01TRD does not need
an exterior firestop on an exterior combustible wall.
To install firestops for horizontal runs that pass through
either interior or exterior walls:
Cut a 12" x 10" (305mm x 25mm) hole through the wall for
DVP-series or a 10" x 10" (254mm x 254mm) hole for SL-D-
series pipe. The center of the framing hole is one (1) inch
(25.4mm) above the center of the horizontal vent pipe.
• 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.
NOTE: There must be NO INSULATION or other
combustibles inside the framed firestop opening.
1" (25.4 mm)
Figure 20. Hole and Vent Pipe
HEAT SHIELD
INTERIOR
FIRESTOP
Figure 21. Heat Shield, Interior & Exterior Firestops
10"
(254mm)
12"(DVP) or 10" (SL)
(305mm or 254mm)
VENT PIPE
TRIM HEAT
SHIELD IF TOO
LONG, ADD TO
SHIELD IF TOO
SHORT
EXTERIOR
FIRESTOP
Hearth & Home Technologies • BE-36-C, BE-36-CIPI • 397-981 Rev. R • 2/05
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 a 10-inch X 10-inch (254mm X 254mm) hole through
the ceiling, using the centerpoint previously marked.
• Frame the hole with framing lumber the same size as the
ceiling joists.
NOTE: There must be NO INSULATION or other
combustibles inside the framed firestop opening.
10" (254mm)
NEW
FRAMING
MEMBERS
CEILING
Figure 22 Hole & New Framing Members
10" (254mm)
CHIMNEY
HOLE
EXISTING CEILING
JOISTS
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