Monessen Hearth HBDV300, HBDV400 manual HOW to USE the Vent Graph, Feet

VENT INSTALLATION

TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE

AND NONCOMBUSTIBLE EXTERIORS

G G=6" (152mm)

V

Inside Corner

G

V

G = Combustible 24"(610mm) Noncombustible 18"(457mm)

V

F F=6" (152mm)

Outside Corner

H

V

J

Combustible &

Noncombustible

H = 24" (610mm)

J = 20" (508mm)

	D
C	C

V

E

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)

Balcony with No Side Wall	Balcony with Perpendicular	Alcove Location
	Side Wall

Figure 13 - 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 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 fireplace in accordance with same.

Example: 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: 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 81/2' (2.6m).

Sidewall Vent Graph showing the relationship between vertical and horizontal dimensions for a Direct Vent flue system.

40					Vertical
38
36
34		Dimensions in
					Dimension
32			Feet
30
28
26
				Horizontal Vent Pipe	From the Floor of Unit
24
22
20
18
16
14			eg: A
12
					to
10
					the
8
					Center
6
4
2					of
					the
2	4	6	8 10 12 14 16 18 20

Horizontal Dimension From the Outside of Termination to the Back of the Fireplace

Figure 13 - Rear Wall Venting Graph

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