Termination Clearances; How To Use The Vent Graph - Vermont Castings VWDVP70NTSC Installation And Operating Instructions Manual

VENTING INSTALLATION

TERMINATION CLEARANCES

Termination clearances for buildings with combustible and non-combustible exteriors.
Inside Corner
G
V
Balcony -
with no side wall
M =
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 specifi ed for vinyl or non-vinyl siding and soffi ts. 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.
Figure 13 -
Termination Clearances

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 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 fi re-
place in accordance with same.
Example: If the vertical dimension from the base of the
fi replace 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 fl ue
system.
20306745
Outside Corner
G =
Combustible
6" (152 mm) V
Noncombustible
2" (51 mm)
Balcony -
with perpendicular side wall
M
V
Combustible &
Noncombustible
M = 12" (305 mm)
P = 6" (152 mm)
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
F
M
V
P
84" (2134 mm)
From Floor to
Center
Figure 14 -
Rear Wall Venting Graph
VWDV70 Series Gas Fireplace
Alcove Applications*
D
C
V
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) 1 x D
3 9' (2.7 m) 2/3 x D
4 12' (3.7 m) 1/2 x D
D = Number of Termination caps x 3
Min.
C = (2 / Number termination caps) x D
Max.
40
38
36
Vent run must not
34
be in shaded area
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
Horizontal dimension from the fi nished outside wall
to the center of the pipe on the fi replace
C
E
C .
MAX
ACTUAL
ACTUAL
ACTUAL
ACTUAL
Actual
eg: A
15