Empire Comfort Systems CIDV-30-7 - Manual (Page 16)

Page 16 R-5086
Figure 23
Installing Firestops (Figures 24, 25, 26 and 27)
Firestops are required for safety whenever the vent system passes
through an interior wall, an exterior wall, or a ceiling. These firestops act
as a firebreak heat shield and as a means to insure that minimum
clearances are maintained to the vent system.
Horizontal runs in the vent system which pass through either interior or
exterior walls, require the use of wall firestops on both sides of the wall
through which the vent passes.
Position the firestops on both sides of the 10 inch x 10 inch hole,
previously cut. Secure with nails or screws. Continue the vent run
through the firestops. (See Figure 24)
Figure 24
Vertical runs of this system which pass through ceilings require the use
of ONE (1) 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 25 ) If the area above the ceiling is NOT
an attic, position and secure the ceiling firestop (SD-963) on the ceiling
side of the previously cut and framed hole. (See Figure 26) If the area
above the ceiling IS an attic, position and secure the firestop on top of
the previously framed hole. (See Figure 27)
NOTE: Remove insulation from the framed area in the attic before
installing the firestop and/or vent stop and/or vent pipes.
Figure 25
Figure 26