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Initial Installation
QUALIFIED INSTALLERS ONLY
CATHEDRAL CEILING INSTALLATION:
Figure 19: Cathedral Ceiling Support Box
Leveling.
Figure 20: Cathedral Ceiling Support Box
Installation.
STEP 1. Follow installation steps 1 & 2 under ‘Vertical Installation’.
STEP 2. Using the plumb bob, mark the centerline of the venting
system on the ceiling and drill a small hole through the
ceiling and roof at this point. From the roof, locate the drill
hole and mark the outline of the “Cathedral Ceiling Support
Box”.
STEP 3. Remove shingles or other roof coverings as necessary to
cut the rectangular hole for the “Support Box”. Cut the hole
” larger than the “Support Box” outline.
STEP 4. Lower the “Support Box” through the hole in the roof
until the bottom of the “Support Box” protrudes at least 2
inches (5 cm) below the ceiling. Align the “Support Box”
both vertically and horizontally with a level as shown in
Figure 19. Temporarily tack the “Support Box” in the place
through the inside walls and into the roof sheathing.
STEP 5. Using tin snips, cut the “Support Box” from the top corners
down to the roof line, and fold the resulting aps over the
roof sheathing (Figure 20). Before nailing it in to the roof,
run a bead of non-hardening mastic around the top edges
of the “Support Box”, to make a seal between the box and
the roof. Clean out any combustible material from the
inside of the “Support Box”.
STEP 6. Complete the cathedral ceiling installation by following the
same procedures outlined in Steps 4 through 9 for “Vertical
Installation”.
FREESTANDING DIRECT VENT KIT WITH COUPLER:
KIT COMPONENTS:
Quantity Description Quantity Description
1 Horizontal direct vent termination cap 1 Ø6” (17 cm) 90° elbow
2 Flue collar adapters (only one used) 4 Wire spacers
4 T-20 Torx screws 3 Decorative rings
1 Wall thimble 1 4 oz tube RTV silicone
1 Inside nish trim collar 20
9
/16” tech screws
1 5’ (190 cm) length of Ø4” (10 cm) double walled ex pipe 8 1” wood screws
2 24” (61 cm) section of Ø6” (17 cm) straight pipe 1 Vinyl siding deector
Please ensure that all components are supplied with this kit. If components are missing or have been damaged,
contact your dealer, distributor, or courier company. Do not attempt the installation if components are missing or
damaged.
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