Vermont Casting 2465 Venting Requirements - Natural Vent Only, Venting Runs, 30001935, 3’ .9 mm

Dutchwest Direct Vent / Natural Vent Gas Heater

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.

Inside Corner Outside Corner Alcove Applications*

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

Balcony -	Balcony -
with no side wall	with perpendicular side wall

M	M
V	V
	P
M =	Combustible &
	Noncombustible
Combustible &
	M = 24" (610 mm)
Noncombustible
	P = 20” (508 mm)
12" (305 mm)

D

C C

V

E

O

E = Min. 6” (152 mm) for non-vinyl sidewalls Min. 12” (305 mm) for vinyl sidewalls

O = 8’ (2.4 m) Min.

No.
of Caps	DMin.	CMax.
1	3’ (.9 mm)	2 x DActual
2	6’ (1.8 m)	1 x DActual
3	9’ (2.7 m)	2/3 x DActual
4	12’ (3.7 m)	1/2 x DActual

DMin. = # of Termination caps x 3

CMax. = (2 / # termination caps) x DActual

584-15

*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All mechanical air intakes within 10’ (1 m) of a termination cap must be a minimum of 3’ (914 mm) below the termination cap. 3. All gravity air intakes within 3’ (914 mm) of a termination cap must be a minimum of 1’ (305 mm) below the termination cap.

Fig. 10	Termination clearances.
							Venting Requirements - Natural Vent Only
		elbow)	36										Venting Runs
			34			A
			32				B						NOTE: When venting staight vertical, without any
		any	30										elbow, a minimum of 8 ft. vertical is required
	feet)		28										off the top of the stove.
		before	26										= Acceptable venting configuration
			24
	(in unit												= Unacceptable venting configuration
			22
			20
	VerticalRun	fromtop of the											A: Vertical installations up to 36 feet (12m) in
			18
													height. Up to an 18 ft. horizontal vent run can be
			12
													45-degree elbows.
			16										installed within the vent system using a
			14										maximum of two 90-degree elbows or four
		(Measured	10										installed within the vent system using a
			4
			8										B: Vertical installations up to 36 feet (12m) in
			6										height. Up to a 24 ft. horizontal vent run can be
			2										maximum of two 45-degree elbows.
													(Ratio = 2/3, Hor./Vert.)
			1	2	4	6	8	10	12 14	16	18	20 22	24

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.

30001935 11