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FRAMING AND FINISHING (CONT’D)
Vertical Firestops
Vertical runs require 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 fireplace and vent system, if
necessary, to accommodate ceiling joists and/or obstructions.
Cut a 10-5/8 inch x 10-5/8 inch hole through the ceiling, using the
center point previously marked. Frame the hole with lumber the
same size as the ceiling joists.
See Figure 60.
If the area above
the ceiling is NOT an attic, position and secure the ceiling firestop
on the ceiling side of the framed hole.
See Figure 61.
If the area above the ceiling is an attic, position and secure the
firestop on top of the framed hole.
See Figure 62.
NOTICE:
Remove insulation from the framed area in the attic
before installing the firestop and/or vent pipes.
Figure 60
Figure 61
Figure 62
Finishing
Finish the walls with the material of your choice.
Figure 12
shows
the minimum vertical and corresponding maximum horizontal
dimensions of mantels or other combustible projections above
the top front edge of the fireplace.
Only non-combustible materials may be used to cover the black
fireplace front.
WARNING
When finishing the fireplace never obstruct or modify the air
inlet/outlet louvers in any manner. Provide adequate clearances
around air openings into the combustion chamber.
CAUTION
If the joints between the finished wall and the fireplace
surround (top and sides) are sealed, use a 300 degree F
minimum sealant material must be used. These joints are
not required to be sealed
.
