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