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HDV Series Direct Vent Gas Fireplace
16
56D3048
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 12 14 16 18 20
eg: A
FP2248
sidewall vent graph
Figure 12 -
Allowable Venting Chart
The Vent Graph should be read in conjunction with the following
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 exit-
ing through the outer wall. Using this dimension on the Sidewall
Vent Graph below, locate the point intersecting with the slanted
graph line.
. 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 A: If the vertical dimension from the floor of the fireplace
is 11' (3.4m) the horizontal run to the face of the outer wall must
not exceed 14' (4.3m).
Example B: If the vertical dimension from the floor of the unit is
7' (2.14m), the horizontal run to the face of the outer wall must
not exceed 8Z\x' (2.6m).
Sidewall Vent Graph showing the relationship between vertical
and horizontal dimensions for a Direct Vent flue system.
Figure 13 -
Rear Wall Venting Graph
Dimensions in Feet
Horizontal Dimension From the Outside Face of the Wall
to the Back of the Fireplace
Vertical Dimension From the Floor of Unit to the Center of the
Horizontal Vent Pipe
V
G Combustible =
6" (152 mm)
Noncombustible =
2” (51 mm)
F
Combustible
6" (152 mm)
Noncombustible =
2” (51 mm)
V
V
G
G = Combustible 24"(610 mm)
Noncombustible 18"(457 mm)
Combustible &
Noncombustible
H = 24" (610 mm)
J = 20" (508 mm)
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
FP1951
termination clearances
48Z\v"
Floor to
Center