10" (254mm) | 10” (254mm) | |
| ||
| CHIMNEY | |
| HOLE | |
NEW | EXISTING CEILING | |
JOISTS | ||
FRAMING | ||
MEMBERS |
| |
CEILING |
|
FIGURE 1.23 Hole and 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.
JOIST |
CEILING |
NAILS (4 REQUIRED) |
CEILING FIRESTOP |
FIGURE 1.24 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.
NAILS (4 REQUIRED) |
RAFTER |
CEILING |
CEILING FIRESTOP |
FIGURE 1.25 Attic Firestop
C. Flue Termination
For Horizontal Terminations - To attach and secure the termination to the last section of horizontal flue:
•The rear flue heat shield MUST be placed one inch above the top of the flue between the wall shield and the base of the termination cap.
•One section of the heat shield is attached to the wall shield. The other is attached to the termination cap in the same manner.
•The heat shield sections will overlap to match the wall thickness (depth).
•If the wall thickness does not allow the required
•The small leg in the shield rests on top of the flue to properly space it from the pipe section (see Figure 1.26).
Interior | Rear Vent |
Wall Shield | Heat Shield |
| 38mm min. |
| overlap |
Outer Flue |
|
Inner Flue | 38mm min. |
| |
| Overlap |
INTERIOR | EXTERIOR |
|
FIGURE 1.26 Flueing through the Wall
•The termination kit should pass through the wall firestops from the exterior of the building.
Heat & Glo • | 17 |