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Hearth and Home Technolgies • Oxford Direct/Natural Vent Installation Manual_R3 • 02/19
Divert Roof Run-off
HHT recommends, where excessive water run-off is possible,
use of one of the two options shown in Figure 3.10 to prevent
water running off the roof and onto/into the horizontal
termination cap.
4. Using appropriate length of pipe section(s) attach to
stove by twisting collar.
5. Measure the horizontal length requirement including a 2”
(51 mm) overlap, i.e. from the elbow to the outside wall
face plus 2” (51 mm) (or the distance required if installing
a second 90° elbow), Figure 3.13.
NOTE:
Always install vertical side wall horizontal venting
with a 1/4” rise for every 12” of run.
2. Secure firestop to the inside frame, center in the 9" x 9"
vent opening.
3. Place stove into position. Measure the vertical height (X)
required from the base of the flue collars to the center of
the wall opening, Figure 3.12
Vertical Side Wall Installation:
NOTE: Refer to Figures 2.8 thru 2.10 for restrictor plate
adjustments for vertical vent runs.
1. Locate vent opening on the wall. It may be necessary
to first position the stove and measure to obtain hole
location. Depending on whether the wall is combustible
or noncombustible, cut opening to size, Figure
3.11 (For combustible walls first frame in opening.)
Combustible Walls: Cut a 9" H x 9" W (244 x 244 mm) hole
through the exterior wall and frame as shown, Figure 30.
Noncombustible Walls: Hole opening must be 7" (178
mm) in diameter.
NOTE: When using flex vent, the opening will have to
be measured according to the 1/2” (13 mm) rise in 12”
(305 mm) vent run.
Install gutter
Install L-shaped
diverter
Figure 3.10
- Locate Vent Opening on Wall
Vent Opening for Combustible Walls
VO584-100
Vent Opening
2/99 djt
Stove Hearth
Framing Detail
Opening for Noncombustible Wall
7"
(190 mm)
Stove Hearth
9"
(244 mm)
9"
(244 mm)
Figure 3.11
- Locate Vent Opening on Wall
X
Figure 3.12
- Vertical Height Requirements