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Vertical Termination - Direct Vent ONLY
A vertical vent system must terminate no less than 8' (2.44
m) and no more than 40' (12 m) above the appliance flue
collar. A 2-1⁄4" restrictor plate (supplied) must be used where
specified in all vertically terminated vent systems. (Figure
8) NOTE: The restrictor plate supplied with the vertical
termination should be discarded. Install restrictor plate
supplied with stove directly at stove outlet. A vertically
terminated vent system must also conform to the following
criteria:
• No more than three 90° elbows may be used.
• Two 45° elbows may be substituted for one 90° elbow.
No more than six elbows may be used.
• Vent must rise a minimum of 2 feet before offset is used.
• Termination height must conform to roof clearance as
specified in Figure 9.
40
39
All Vertical Termi-
38
nations in this area
37
Require use of the
36
⁄
"
35
2
1
Restrictor Plate*
4
34
33
32
31
30
29
28
27
26
Vertical terminations
25
must be within this area
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23
22
21
20
19
18
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
2
3
4
5
6
Horizontal Run (in feet)
Figure 8 - Vertical vent termination window.
*The Restrictor Plate is used on Direct Vent Installations Only
3-90-693831
Hearth and Home Technolgies • Oxford Direct Vent Installation Manual_R6 • 08/17
Unacceptable Venting
Configuration
7
8 9
10 11 12 13 14 15 16 17 18 19
Vent Termination Clearances
When planning the installation, consider the location of the
vent terminal and clearances. Some of the most common
clearances to keep in mind are shown in Figure 10.
Important: All vent clearances must be maintained.
Check your vent termination clearances against
Figures 9 through 11.
The vent should be placed so that people cannot be
burned by accidentally touching the vent surfaces when
the stove is operating.
The vent termination should be located where it cannot
be damaged by such things as automobile doors, lawn
mowers or snowblowers and it should be located away
from areas where it could become blocked by snow, etc.
Some considerations are:
• Obstructions or impediments to venting.
• Nearby combustible materials that could come into
contact with combustion exhaust gases.
• Other nearby openings {within 12" (305 mm)} through
which exhaust gas could reenter the building.
• All vegetation within 3' (76 mm) that may interfere with
the draft.
Other factors that influence where the installation will
be sited include the location of outside walls, where
additional heat may be desired in the home, where the
family members gather most regularly, and perhaps most
importantly, the distance limitations of the venting system.
ST132a
FDV28
Vertical
vent run
12/3/99 djt
area
• The horizontal termination must not be recessed into
modified
the exterior wall or siding.
1/11/00 djt
• Horizontal vent runs must be level toward the vent
termination.
• Clearances around the vent termination must be
maintained.
• For installations using Simpson DuraVent pipe,
parallel installations with minimum wall clearance
have restricted access for connecting the Horizontal
Vent Cap straps to the vent pipe. See the maker's
instructions for recommended installation procedures.
20
IMPORTANT
Direct Vent Only
9
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