Vent Graph - Vermont Castings WDVST500 Installation & Operating Instructions Manual

VenTInG InSTallaTIOn
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
Inside Corner
G
Balcony -
with no side wall
Figure 9 -
Termination
M =
Clearances
Combustible &
Noncombustible
12" (305 mm)
*nOTe: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or
non-vinyl siding and soffits. 1. There must be a 3' (914 mm) minimum between termination caps. 2. All mechanical air intakes within 10' (1 m) of a
termination cap must be a minimum of 3' (914 mm) below the termination cap. 3. All gravity air intakes within 3' (914 mm) of a termination cap must
be a minimum of 1' (305 mm) below the termination cap.
hOW TO uSe The VenT Graph
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 exiting through the outer wall. Using this dimen-
sion 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 fire-
place in accordance with same.
Example: If the vertical dimension from the floor of the
fireplace is 11' (3.4 m) the horizontal run to the face of
the outer wall must not exceed 16' (4.9 m).
Sidewall Vent Graph showing the relationship between
vertical and horizontal dimensions for a Direct Vent flue
system.
78D2082
Outside Corner
G =
Combustible
6" (152 mm)
Noncombustible
V
2" (51 mm)
Balcony -
with perpendicular side wall
M
V
Combustible &
Noncombustible
M = 12" (305 mm)
P = 6" (152 mm)
Figure 10 -
Rear Wall Venting Graph
(No Horizontal Elbows)
F =
Combustible
6" (152 mm)
V
Noncombustible
2" (51 mm)
F
M
V
P
40
38
36
34
32
30
28
26
24
22
20
18
50" (1270 mm)
16
From Floor to
14
Center
12
10
8
6
4
2
Horizontal dimension from the finished outside
wall to the center of the pipe on the fireplace
WDV See-thru Gas Fireplace
Alcove Applications*
D
C
C
V
E
O
E
= Min. 2" (51 mm) for
non-vinyl sidewalls
Min. 12" (305 mm) for
vinyl sidewalls
O
= 8' (2.4 m) Min.
No.
of Caps D
Min.
1 3' (914 mm) 2 x D
2 6' (1.8 m)
3 9' (2.7 m)
4 12' (3.7 m)
D = # of Termination caps x 3
Min.
C = (2 / # termination caps) x D
Max.
eg: A
2 4 6 8 10 12 1 4 16 18 2 0
FP2132
sidewall vent graph
C
Max.
Actual
1 x D
Actual
2/3 x D
Actual
1/2 x D
Actual
Actual
584-15
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