Empire Comfort Systems MV CONTROL DVL36BP30KN-1 Installation Instructions Manual page 31

VERTICAL FIRESTOPS
Vertical runs of this system which pass through ceilings require
the use of 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 fireplace and vent system, if
necessary, to accommodate ceiling joists and/or obstructions.
Cut a 9-1/2 inch x 9-1/2 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 35. 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 36.
If the area above the ceiling is an attic, position and secure the
firestop on top of the previously framed hole. See Figure 37.
NOTE: Remove insulation from the framed area in the attic
before installing the firestop and/or vent pipes.
EXISTING CEILING JOISTS
CEILING BELOW
41971-4-1121
FRAMING AND FINISHING (CONT'D)
NEW FRAMING
Figure 35
Figure 36
FINISHING
Finish the walls with the material of your choice. Figure 10
on Page 19 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.
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.
If the joints between the finished wall and the fireplace
surround (top and sides) are sealed, a 300 Degree F minimum
sealant material must be used. These joints are not required to
be sealed. Only non-combustible material (using 300 Degree
F minimum adhesive if needed), can be applied as facing to
the fireplace surround.
Figure 37
WARNING
CAUTION
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