Monessen Hearth 624DV(ST - Manual (Page 16)

16 42D0200
Designer Series Gas Fireplaces vENTING INSTaLLaTIoN
TERMINaTIoN CLEaRaNCES FoR BuILdINGS wITh CoMBuSTIBLE
aNd NoNCoMBuSTIBLE ExTERIoRS
Figure 14 -
Allowable Venting Chart
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 exit-
ing 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 fireplace
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’ (2.14m), the horizontal run to the face of the outer wall must
not exceed 8Z\x' (2.6 m).
Sidewall Vent Graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system.
Figure 15 -
Rear Wall Venting Graph
Horizontal Dimension From the Outside Face of the
Wall to the Center of the Fireplace Vent Flange
V
ertical Dimension From the Floor of Unit to the Center of the
Horizontal V
ent Pipe
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
Dimensions in
Feet
20"
FP2248
sidewall vent graph
V
G G=6" (152mm)
F F=6" (152mm)
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
FP1951
termination clearances