23
This shows an attic installation.
1.Keep insulation away from the vent pipe at least 1 inch (25 mm).
If the area above the ceiling IS an attic, position and secure the firestop on top of the previously framed hole.
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 beginning of the Installing Vent Components sec- tion.
•The termination kit should pass through the wall firestops from the exterior of the building.
•Adjust the termination cap to its final exterior posi- tion on the building.
WARNING
THE TERMINATION CAP MUST BE POSITIONED SO THAT THE ARROW IS POINTING UP.
For roundcap termination kits:
•Use the exterior pipelock hole provided 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 built into the cap.
•Use a
