Empire Comfort Systems DVCC32BP30N-3 Installation Instructions Manual page 27

Vertical Firestops
Vertical vent runs which pass through ceilings require one ceiling
firestop at the hole in each ceiling through which the vent passes.
Position a plumb bob directly over the center of the vertical vent
component and mark the ceiling to establish the center point of the
vent. Drill a hole or drive a nail through this center point and check
the floor above for any obstructions such as wiring or plumbing
runs. Reposition the appliance and vent system, if necessary, to
accommodate ceiling joists and/or obstructions.
Cut a 10-inch x 10-inch hole through the ceiling, using the center
point previously marked. Frame the hole with framing lumber the
same size as the ceiling joists. See Figure 45. If the area above
the ceiling is not an attic, position and secure the ceiling firestop on
the ceiling side of the previously cut and framed hole. See Figure
56. If the area above the ceiling is an attic, position and secure the
firestop on top of the previously framed hole. See Figure 46.
NOTICE: Remove insulation from the framed area in the attic before
installing the firestop and/or vent pipes.
EXISTING CEILING JOISTS
CEILING
10"
(254 mm)
37606-4-0718
VENT FRAMING (CONT'D)
NEW FRAMING
10"
(254mm)
10"
(254mm)
Figure 45
10"
(254 mm)
NAILS, 4 REQUIRED
FIRESTOP
Figure 46
See Vertical Termination Pages 30 - 31.
Figure 47
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