16
74D0009
V
G
G = 6" (152 mm)
F
F = 6" (152 mm)
V
V
G
G = Combustible 24"(610mm)
Noncombustible 18"(457mm)
Combustible &
Noncombustible
H = 24" (610mm)
J = 20" (508mm)
V
H
J
C = Maximum depth of 48" (1219 mm)
for alcove location
D = Minimum width for back wall of
alcove location
Combustible - 38" (965 mm)
Noncombustible - 24" (610 mm)
E = Clearance from corner in alcove
location
Combustible - 6" (152 mm)
Noncombustible - 2" (51 mm)
E
V
D
C
C
Inside Corner
Alcove Location
Outside Corner
Balcony with No Side Wall
Balcony with Perpendicular
Side Wall
FP2075
termination clearances
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
2 4 6 8 10 1214 16 1820
eg: A
VENT INSTALLATION
TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE
AND NONCOMBUSTIBLE ExTERIORS
Figure 9 - Allowable Venting Chart
HOW TO USE THE VENT GRAPH
The Vent Graph should be read in conjunction with the follow-
ing vent installation instructions to determine the relationship
between the vertical and horizontal dimensions of the vent
system.
1. Determine the height of the center of the horizontal vent pipe
exiting through the outer wall. Using this dimension on the
Sidewall Vent Graph below, locate the point intersecting with
the slanted graph line.
2. From the point of this intersection, draw a vertical line to the
bottom of the graph.
3. Select the indicated dimension, and position the fireplace in
accordance with same.
Example: If the vertical dimension from the floor of the fire
-
place is 11' (3.4 m) the horizontal run to the face of the outer
wall must not exceed 14' (4.3 m).
Example: If the vertical dimension from the floor of the unit
is 7’ (2.14 m), the horizontal run to the face of the outer wall
must not exceed 6
1
/
2
' (2 m).
Sidewall Vent Graph showing the relationship between vertical
and horizontal dimensions for a Direct Vent flue system.
Figure 10 - Rear Wall Venting Graph
Horizontal dimension from the finished outside wall
to the center of the pipe on the fireplace
Vertical Dimension From the Floor of Unit to the
Center of the Horizontal V
ent Pipe
Dimensions in
Feet
Combustible – 6" (152 mm)
Noncombustible – 2" (51mm)
57" from
floor
to center
Summary of Contents for Direct Vent BLDV400
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