Vermont Casting 2822, 820, 2828 Venting Requirements - Natural Vent Only, Venting Runs, 20002191

Vermont Castings Jefferson Direct Vent/Natural Vent Gas Heater

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.

Inside Corner Outside Corner Recessed Location

			B =
	A =		Combustible
A	Combustible		6"(152mm)
	6"(152mm)	V	Noncombustible
			2"(50mm)
	Noncombustible
V	2"(50mm)	B
Balcony -		Balcony -
with no side wall		with perpendicular side wall
	G	H
	V		V
		Combustible &	J
G =
		Noncombustible
Combustible&
Noncombustible		H = 24"(610mm)
12"(305mm)		J = 20"(508mm)

D

CC

E

V

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

D = Minimum width for back wall of a recessed location. Combustible 38"(965mm) Noncombustible 24"(610mm)

E = Clearance from corner in recessed location. Combustible 6"(152mm) Noncombustible 2"(50mm)

584-14

Fig. 10	Termination clearances.
								Venting Requirements - Natural Vent Only
				36					Venting Runs
				34
							A
				32					= Acceptable venting configuration
							B
		to		30
									= Unacceptable venting configuration
				28
	feet)(inRunVertical	offloorfrom(Measuredunit	cap.)ventoftop
				26					A: Vertical installations up to 36 feet (12m) in
				24
									height. Up to an 18 ft. horizontal vent run can be
				22
									installed within the vent system using a
				20
									maximum of two 90-degree elbows or four
				18
									45-degree elbows.
				16
				14					B: Vertical installations up to 36 feet (12m) in
				12					height. Up to a 24 ft. horizontal vent run can be
				10					installed within the vent system using a
				8					maximum of two 45-degree elbows.
									(Ratio = 2/3, Hor./Vert.)
				4	6	8	10 12 14	16 18	20 22 24 26 28 30 32 34 36

Horizontal Run (in feet)	FP567b
Fig. 11 Vent termination window - Natural Vent ONLY.	NOTE: When using the FSDHAG, the restrictor plate
	supplied with the stove is not used.

20002191 11