Monessen Hearth HDV500NV/PV manual Above the first floor, including storage spaces and closets

HDV Series Direct Vent Gas Fireplace	ventING installation
Nails	NOTE: If the vent pipe passes through any occupied areas
	above the first floor, including storage spaces and closets,
	you must enclose pipe. You may frame and sheetrock the
	enclosure with standard construction material. Make sure
	to meet the minimum allowable clearances to combustibles.
	Do not fill any of the required clearance spaces with
	insulation.
	Horizontal Overhang

Firestop

FP1969

Figure 33 -

If area above is a room, install firestop above framed hole as shown

						9
4 x 6B\,	9	56O		"		56O"
Venting			56O		"	10	56O"
5 x 8	10
Venting

	FP1970
Nails	Firestop

Figure 34 -

If area above is not a room, install firestop below framed hole as shown

NOTE: If an offset is needed to avoid obstructions, you must support the vent pipe every three (3) feet. Use wall straps for this purpose. See Figure 33, page 26. Whenever possible, use 45° elbows instead of 90° elbows. The 45° elbow offers less restriction to the flow of the flue gases and intake air.

5.Place the flashing over the pipe section(s) extending through the roof. Secure the base of the flashing to the roof and framing with roofing nails. Be sure roofing material overlaps the top edge of the flashing. There must be a 1" clearance from the vent pipe to combus- tible materials.

6.Continue to add pipe sections until the height of the vent cap meets the minimum requirements below.

NOTE: You must increase vent height for steep roof pitches. Nearby trees, adjoining roof lines, steep pitched roofs, and other similar factors may cause poor draft or down-drafting in high winds. Increasing the vent height may solve this problem.

	2 ft.		2 ft. Min.
	Min.
		Lowest
		Discharge
Termination		Opening
Vent

				H*		12
Storm					X
Collar
						FP1971
Flashing
				1” Minimum Clearance to
Concentric				Combustibles
Vent Pipe			Figure 35 -
			Minimum Chimney Clearance
					H
		Roof Pitch			Feet	Meters
	Flat to 7/12				1.0	.3
	Over 7/12 to 8/12				1.5	.46
	Over 8/12 to 9/12				2.0	.61
	Over 9/12 to 10/12				2.5	.76
	Over 10/12 to 11/12				3.25	.99
	Over 11/12 to 12/12				4.0	1.22
	Over 12/12 to 14/12				5	1.52

*H - Minimum height from roof to lowest discharge opening of vent

24 56D3048