Monessen Hearth HDV500NV/PV manual Venting installation, Inside Corner Detail, Minimum distances

venting installation	HDV Series Direct Vent Gas Fireplace
For horizontal termination	Inside Corner Detail

								V	G
								H	A
D
E	C			B	B
B			B					I
	V	Fixed
L
		Closed		Opera-	Fixed
F			V				V
		Operable		ble	Closed
	V			V		A			M
	B						B		V	A
				A	J					K

G

A

V

Vent Terminal A Air Supply Inlet Area Where Terminals Not Permitted

Figure 11 -

Horizontal Vent Termination Location

minimum distances

A = Clearance above the grade, a veranda, porch, deck, or balcony [*12" (305 mm) minimum]. B = Clearance to window or door that may be opened [*12" (305 mm) minimum].

C = Clearance to permanently closed window [*minimum 12" (305 mm) recommended to prevent condensation on window]

D = Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of two (2) feet (610 mm) from the centerline of the terminal [18" (457 mm) minimum].

E = Clearance to unventilated soffits [12" (305 mm) minimum]. Clearance to vinyl soffit [30" (762mm)]. F = Clearance to an outside corner. Page 16, Figure 12

G = Clearance to an inside corner. Page 16, Figure 12

H = *Not to be installed above a gas meter/regulator assembly within three (3) feet (914 mm) horizontally from the centerline of the regulator.

I = Clearance to service regulator vent outlet [*3' (914 mm) minimum].

J = Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance [*12" (305mm) minimum].

K = Clearance to a mechanical air supply inlet [*6' (1829 mm) minimum].

L = Clearance above a paved sidewalk or paved driveway located on public property [**7' (2133 mm) minimum].

M = Clearance under veranda, porch, deck, or balcony. Page 16, Figure 12. [For Canada *12" (305 mm) minimum***].

N = Clearance above a roof shall extend a minimum of 24" (610 mm) above the highest point when it passes through the roof surface and any other obstruction within a horizontal distance of 18" (457 mm).

*As specified in CSA B149 Installation Codes. Note: Local codes or regulations may require different clearances.

**A vent must not terminate directly above a sidewalk or paved driveway, which is located between two single- family dwellings and serves both dwellings.

***Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

WARNING

Always maintain minimum clearances around vent systems.The minimum clearance to combustibles for horizontal vent pipe are 3” at the top and 1” at the sides and bottom of the vent system until the pipe penetrates the nearest vertical wall (1” required). A 1” minimum clearance all around the pipe must be maintained at outside wall and on vertical runs. Do not pack the open air spaces with insulation or other materials. This could cause high temperatures and may present a fire hazard.

*Unless the vertical run is 7Z\x feet or higher (top vent units only), the clearances for the horizontal run is 1” at the top.

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