1.Cut the
•Position the firestops on both sides of the hole previously cut and secure the firestops with nails or screws.
•The heat shields of the firestops MUST BE placed towards the top of the hole.
•Continue the vent run through the firestops.
12"
(305 mm)
1" (25.4 mm)
VENT PIPE
12"
(305 mm)
Figure 13. 12" x 12" Hole and Vent Pipe
15
2.Position the firestops.
3.Place the heat shield to the top.
4.Continue the vent run.
HEAT SHIELD | TRIM HEAT | |
SHIELD IF TOO | ||
| ||
| LONG, ADD TO | |
| SHIELD IF TOO | |
| SHORT. | |
| EXTERIOR | |
| FIRESTOP | |
INTERIOR |
| |
FIRESTOP |
|
Figure 14. Heat Shield, Interior and Exterior Firestops
For Vertical Runs - One ceiling firestop is REQUIRED at the hole in each ceiling through which the vent passes.
To install firestops for vertical runs that pass through ceilings:
•Position a plumb bob directly over the center of the vertical vent component.
•Mark the ceiling to establish the centerpoint of the vent.