Monessen Hearth HDV500NV/PV ventING installation, HDV Series Direct Vent Gas Fireplace, Example

HDV Series Direct Vent Gas Fireplace ventING installation

•The maximum number of 45° elbows permitted per side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run.

•For each 45° elbow installed in the horizontal run, the length of the horizontal run MUST be reduced by 18" (45 cm). This does not apply if the 45° elbows are installed on the vertical part of the vent system.

•The maximum number of elbow degrees in a system is 270°. Figure 24

1 + 2 + 3 + 4 = 270°
1		1
2		2
3		3
4		4
			FP1180
Example:	Elbow 1	=	90°
	Elbow 2	=	45°
	Elbow 3	=	45°
	Elbow 4	=	90°
Total Angular Variation		=	270°

Figure 24 -

Maximum Elbow Usage

Horizontal with vertical rise (through-the-wall) applications

1.Locate and cut the vent opening in the wall. For com- bustible walls first frame in opening.

Combustible Interior Walls: Cut a 12Z\x"H x 10Z\x" W hole through the interior wall.

Combustible Exterior Walls: Cut a 10Z\x"H x 10Z\x"W square hole through the exterior wall frame. Figure 25

Noncombustible Walls: Hole opening should be 8Z\x" (216mm) in diameter.

2.The center of the hole should align with the center line of the horizontal rigid vent pipe end. Allow 1/4" minimum rise per foot. Figure 25

10Z\x"

(267 mm)

10Z\x"

(267 mm)

Framing

Combustible Wall

	8Z\x"
	(216 mm)
		VO584-100
Figure 25 -	Noncombustible Wall
Exterior Wall Framing Dimensions

20 56D3048