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Section 3-3-1: Venting Layout: Wall Mounted Termination
Top Venting Layout: Wall mounted
termination. L38ST:
Measure the vertical height from the fireplace hearth to the centre of
the termination and the horizontal run from the fireplace flue collar
to the wall flange of the termination. Plot on the Venting Graph Figure
8 or 8b with an 'X'.
If the 'X' falls on or above the top boundary of the shaded area, the
installation is acceptable.
Selection of components and details of venting layout should adhere
to the following guidelines:
• Vent terminations must not be recessed in walls or siding.
• For Heat Shield requirements see Section 3-3 on page 14.
• Once the proposed venting layout has been determined refer to
Figure 8, 8b, 8c to ensure the layout is acceptable.
Notes Wall Mounted Terminations: TOP VENT
• All measurements for vertical or horizontal runs are measured from
center of the vent pipe.
• Venting runs must fall within the limits set by the venting graph,
see Figure 8 or 8b.
Example A: (Acceptable Installation)
If the vertical dimension from the hearth is 96" and the horizontal
run to the wall flange of the vent termination is 60", this would be an
acceptable installation.
Example B: (Acceptable Installation)
If the vertical dimension from the hearth is 66" and the horizontal
run to the wall flange of the vent termination is 72", this would be an
acceptable installation.
Example C: (Unacceptable Installation)
If the vertical dimension from the floor of the fireplace is 60" and the
horizontal run to the wall flange of the vent termination is 144", this
would not be an acceptable installation.
132
120
Acceptable vent run
within non-shaded area.
108
A
96
84
72
60
48
42''
36
24
36''
12
0
0
12
24
36
48
60
Horizontal Run (In.)
Figure 8.b L38DF* Top Vent Venting Graph for wall mounted terminations.
XG0223
B
C
Unacceptable vent run
within shaded area.
72
84
96
108
120
132
144
156
168 180
Hearth
Figure 8.c Top Vented, wall mounted Multi-elbow installation. See Venting Graph for Top vent,
wall mounted terminations, Figure 8 or 8.b
30" Min.
Figure 10.d Top Vented, wall mounted Multi-elbow installation. See Venting Graph for Top vent,
wall mounted terminations
30" Max.
120" Max.
Flex
Section
Figure 10.e Top Vented, wall mounted Retracted Multi-elbow installation. See Venting Graph for
Top vent, wall mounted terminations
Installation
Heat Shield
36''
Max.
Termination
Exterior
Wall
Heat Shield
150"
Max.
Termination
Rigid
Section
Flex
Section
Exterior
Wall
Heat Shield
Termination
Rigid
Section
96''
Min.
Exterior
Wall
42''
Min.
96''
Min.
15
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