Empire Comfort Systems MILLIVOLT DVCD FP3-4 Series Installation Instructions Manual page 29

Vertical Firestops
Vertical runs require the use of one ceiling firestop at each ceiling
hole through which the venting 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 fireplace 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 48. 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 49. If the area above the ceiling is an attic, position
and secure the firestop on top of the previously framed hole. See
Figure 50.
NOTICE: Remove insulation from the framed area in the attic
before installing the firestop and/or vent pipes.
See Horizontal Termination Page 31 and Vertical Termination
Pages 32 - 33.
38712-4-0920
FRAMING AND FINISHING (CONT'D)
Figure 48
Figure 49
Figure 50 (Attic Installation)
See Horizontal Termination Page 31 and Vertical Termination
Pages 32 - 33.
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