Initial Installation
QUALIFIED INSTALLERS ONLY
Figure 34:
Figure 33: Use of Wall Straps.
CATHEDRAL CEILING INSTALLATION: |
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1. Follow installation steps 1 & 2 under INITIAL |
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INSTALLATION - VERTICAL INSTALLATION. |
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2. Using the plumb bob, mark the centerline of |
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the venting system on the ceiling and drill a |
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small hole through the ceiling and roof at this |
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point. From the roof, locate the drill hole and |
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mark the outline of the “Cathedral Ceiling |
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Support Box”. |
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3. Remove shingles or other roof coverings as |
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necessary to cut the rectangular hole for the |
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“Support Box”. Cut the hole 1⁄8” larger than |
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the “Support Box” outline. |
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4. Lower the “Support Box” through the hole in |
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the roof until the bottom of the “Support Box” |
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protrudes at least 2 inches (5 cm) below the |
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ceiling. Align the “Support Box” both vertically |
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and horizontally with a level as shown in |
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Figure 35. Temporarily tack the “Support Box” |
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in the place through the inside walls and into | Figure 35: Cathedral Ceiling Support Box Leveling. |
the roof sheathing. |
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