Monessen Hearth HDV500NV/PV manual How To Use The Vent Graph, 10 1214 16

HDV Series Direct Vent Gas Fireplace venting installation

termination clearances for buildings with combustible and noncombustible exteriors

G		Combustible =
		6" (152 mm)
	V	Noncombustible =
		2” (51 mm)

Inside Corner

G

V

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

		Combustible
V		6" (152 mm)
		Noncombustible =
	F
		2” (51 mm)

Outside Corner

H

V

J

Combustible &

Noncombustible

H = 24" (610 mm)

J = 20" (508 mm)

	D
C	C

V

E

C = Maximum depth of 48" (1219 mm) for alcove location

D = Minimum width for back wall of alcove location Combustible - 38" (965 mm) Noncombustible - 24" (610 mm)

E = Clearance from corner in alcove location

Combustible - 6" (152 mm) Noncombustible - 2" (51 mm)

Balcony with No Side Wall	Balcony with Perpendicular	Alcove Location
Figure 12 -	Side Wall
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 A: 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 B: 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' (2.6m).

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

	40
	38
	36
	34
Feet	32
	30
	28
in
	26
Dimensions
	24				Horizontal
	22
	20
	18
					Vent
	16
	14
48Z\v"				eg: A	Pipe
	12
Floor to
Center	10
	8
	6
	4
	2
	2	4	6	8 10 1214 16 1820

Vertical Dimension From the Floor of Unit to the Center of the

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

Figure 13 -

Rear Wall Venting Graph

Wall

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