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.
JOIST |
CEILING |
NAILS (4 REQUIRED) |
CEILING FIRESTOP |
Figure 22. Ceiling Firestop (Ceiling Side) |
If the area above the ceiling IS an attic, position and secure the firestop on top of the previously framed hole.
NOTE: Keep insulation away from the vent pipe at least 1 inch (25mm).
| NAILS (4 REQUIRED) |
| RAFTER |
CEILING |
|
| CEILING FIRESTOP |
Figure 23. | Attic Firestop |
C. Vent Termination
For Horizontal Terminations - To attach and secure the termination to the last section of horizontal vent:
•Rotate and interlock the ends as described at the begin- ning of the Installing Vent Components section.
•The termination kit should pass through the wall firestops from the exterior of the building.
•Adjust the termination cap to its final exterior position on the building.
!WARNING: THETERMINATIONCAPMUSTBEPO- SITIONEDSOTHATTHEARROWISPOINTINGUP.
For roundcap termination kits:
•Use the exterior pipelock hole on the round flange of the wall firestop to secure the vent pipe in place.
For trapezoidal cap termination kits:
•Using screws secure the cap to the exterior wall through the flanges in the cap.
!WARNING: THE BOTTOM OF THE VENT TERMINATION CAP MUST BE A MINIMUM
OF 12 INCHES (305 MM) ABOVE GROUND LEVEL (GRADE). THE TOP OF THE CAP MUST BE A MIN- IMUM OF 18 INCHES (457 MM) BELOW COMBUS-
TIBLE MATERIAL, SUCH AS A DECK. THE SIDE OF THE CAP MUST BE A MINIMUM OF 6 INCHES (152 MM) AWAY FROM A PARALLEL OUTSIDE WALL. VENTING TERMINALS SHALL NOT BE RE- CESSED INTO A WALL OR SIDING. SEE THE FOL- LOWING DIAGRAM FOR VENT TERMINATION CLEARANCES.
ROUND CAP TERMINATION
PERFORATION CANNOT BE
INSIDE THE WALL
71/2"
(191mm)
MINIMUM
TRAPEZOID CAP TERMINATION
7 1/4" (184mm)
Figure 24. Round & Trapezoid Termination Caps
21