To install firestops for horizontal runs that pass through either interior or exterior walls:
•Cut a
•Position the firestops on both sides of the hole previ- ously cut and secure the firestops with nails or screws.
•The pipe opening of the firestops MUST be placed to- wards the bottom of the fireplace.
NOTE: There must be NO INSULATION or other combustibles inside the framed firestop opening.
10" |
INTERIOR |
WALL SHIELD |
12" |
Figure 13. 10" x 12" Hole and Vent Pipe |
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 verti- cal vent component.
•Mark the ceiling to establish the centerpoint of the vent.
•Drill a hole or drive a nail through this centerpoint.
•Check the floor above for any obstructions, such as wir- ing or plumbing runs.
•Reposition the fireplace and vent system, if necessary, to accommodate the ceiling joists and/or obstructions.
•Cut a
•Frame the hole with framing lumber the same size as the ceiling joists.
NOTE: There must be NO INSULATION or other combustibles inside the framed firestop opening.
10" (254 mm) | 10" (254mm) | |
| ||
| CHIMNEY | |
| HOLE | |
NEW | EXISTING CEILING | |
JOISTS | ||
FRAMING | ||
| ||
MEMBERS |
| |
CEILING |
| |
Figure 14. 10" x 10" Hole & New Framing Members | ||
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.
This shows a ceiling installation.
JOIST |
CEILING |
NAILS (4 REQUIRED) |
CEILING FIRESTOP |
Figure 15. 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.
This shows an attic installation. Keep insulation away from the vent pipe at least 1 inch (25mm).
| NAILS (4 REQUIRED) |
| RAFTER |
CEILING |
|
| CEILING FIRESTOP |
Figure 16. | Attic Firestop |
Heat & Glo • Everest • | 17 |
