MHSC CDVR33 - Page 18

18 69D0023
V
G Combustible =
6" (152mm)
Noncombustible =
2” (51mm)
F
Combustible =
6" (152mm)
Noncombustible =
2” (51mm)
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" (1219mm)
for alcove location
D = Minimum width for back wall of
alcove location
Combustible - 38" (965mm)
Noncombustible - 24" (610mm)
E = Clearance from corner in alcove
location
Combustible - 6" (152mm)
Noncombustible - 2" (51mm)
E
V
D
C
C
Inside Corner
Alcove Location
Outside Corner
Balcony with No Side Wall Balcony with Perpendicular
Side Wall
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
CDV Series Gas Fireplace
VENT INSTALLATION
TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE
AND NONCOMBUSTIBLE EXTERIORS
Figure 12 - 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 inter-
secting 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 replace
in accordance with same.
Example: If the vertical dimension from the oor of the
replace 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 oor of the
unit is 7’ (2.14 m), the horizontal run to the face of the
outer wall must not exceed 8
1
/2' (2.6 m).
Sidewall Vent Graph showing the relationship between verti-
cal and horizontal dimensions for a Direct Vent ue system.
Figure 13 - Side Wall Venting Graph
Horizontal Dimension From the Outside of
Termination to the Back of the Fireplace
Vertical Dimension From the Floor of Unit to the Center of the
Horizontal Vent Pipe
Dimensions in Feet
20"