Installation Guide

PG 14
provided in the outer leg where the outer and inner halves overlap. Use a ¼” drill
bit to drill through the inner leg at that location. Use the nut & bolt provided to pin
the Adjustable Legs in position.
3. Install Roof Bracket: Mount the two Brackets where each of the adjustable legs
meets the roof, using (6) 1” roofing nails per bracket. Seal the nail heads
carefully with a non-hardening, waterproof sealant. Attach the bottom end of the
Adjustable Legs to the Roof Brackets using the nuts & bolts provided.
ROOF SUPPORTED INSTALLATIONS
There are two types of Roof Supported Installations: Using a Square Ceiling Support
Box and using a Roof Support Bracket.
For a Square Ceiling Support Box installation, make sure that the square box portion of
the Support Box can extend at least 2” below the low side of the finished ceiling (Fig
15). The Support Box must remain level, and the top edge of the box must cover the
edge of the roof’s decking material. Mobile home chimney installations are roof
supported. Do NOT seal openings in flashing.
1. Place Appliance: Place the appliance in its proper location, referring to the
manufacturer’s instructions as to allowable distances from combustibles, etc.
2. Cut Openings: Cut a roof opening in your desired location, just as in a Ceiling
Supported Installation (Steps 1 through 5, page 5-9). If a separate ceiling and
roof exists, as shown in Figure 16 (Low Attic), first cut and frame a ceiling
opening as described in Ceiling Supported Installations (Step 2, page 6). Refer
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