E. Install the Attic Insulation Shield |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Tabs | |
An insulation shield must be installed when there is a pos- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
sibility of insulation coming into contact with the factory built |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
chimney system. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 17 in. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
• Bend the tabs at the top of the attic insulation shield inward. | 24 |
| in. |
|
|
|
|
|
|
| (423 mm) Attic | |||||
|
|
|
|
|
|
|
| |||||||||
|
|
|
|
|
|
|
| |||||||||
This will help keep the chimney section centered in the | (610 |
| mm) |
|
|
|
|
|
|
|
|
| Insulation | |||
Insulation |
|
|
|
|
|
|
|
|
|
|
|
|
| Shield | ||
shield. |
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Ceiling Firestop | |
• Position the shield over the vertical chimney section where |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
it penetrates a ceiling firestop. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
•Slide the shield down until it rests on the ceiling firestop.
The ceiling firestop will support the insulation shield. See |
| 13 in. |
|
| |
Figures 5.4 and 5.5. |
|
|
| ||
|
| (330 mm) |
|
| |
WARNING |
|
| Chimney |
| |
Figure 5.4 Install Attic Insulation Shield Above the Ceiling | |||||
Fire Risk | |||||
|
|
|
| ||
• DO NOT pack insulation or other |
|
|
|
| |
combustibles: between ceiling firestops; |
|
|
|
| |
between chimney and attic insulation | 17 in. |
| Tabs |
| |
shield. |
| Attic | |||
|
| ||||
• ALWAYS maintain specified clearances | (423 mm) |
| Insulation | ||
around chimney and ceiling firestops. | Insulation | 24 in. |
| Shield | |
• Install ceiling firestops as specified. |
|
| |||
Failure to keep insulation or other material | (610 mm) |
|
| ||
|
|
|
| ||
away from chimney pipe may cause fire. |
|
|
|
| |
F. |
|
|
|
| |
Continue assembling the chimney sections up through the | 13 in. |
|
| ||
ceiling firestops as needed. While doing so, be aware of the |
|
| |||
(330 mm) | Ceiling Firestop | ||||
height and unsupported chimney length limitations given un- |
| Chimney | |||
der Section 5.A. Chimney Requirements. |
|
|
| ||
|
|
|
| ||
Check each section by pulling up slightly from the top to en- | Figure 5.5 Install Attic Insulation Shield Below the Ceiling | ||||
sure proper engagement before installing the succeeding |
|
|
|
| |
sections. If they have been connected correctly, they will not |
|
|
|
| |
disengage when tested. |
|
|
|
| |
G. Secure the Chimney |
|
| |
When offsets and returns are joined to straight pipe sections, |
|
| |
they must be locked into position with the screws provided* |
|
| |
(outer only), using the predrilled holes. To prevent gravity |
| Ceiling | |
from pulling the chimney sections apart, the returns and the |
| ||
Straps | Firestop | ||
chimney stabilizers have hanger straps for securing these | |||
| |||
parts to joists or rafters. See Figure 5.6. |
| Joint | |
* or equivalent #6 or #8 sheet metal screw no longer than |
| ||
| Band | ||
3/4 in. (19 mm). |
| ||
Optional | (Optional) | ||
| Additional |
| |
WARNING | Support |
| |
|
|
Fire Risk
•Secure offsets with screws (not to exceed
3/4 in./19 mm in length). | Figure 5.6 Secure the Chimney |
•Secure returns with strapping.
•Straight chimney sections may be secured with screws (not to exceed 3/4 in./19 mm in length) at the joints.
Keep chimney sections from separating or twisting.
Outdoor Lifestyles by Hearth & Home Technologies Inc. • Montana | 17 |
