Vermont Casting DVR33 manual General Venting Information-Termination Location

Vermont Castings, Majestic Products: DVR33

General Venting Information–Termination Location

D

E

V

B

V

L

	INSIDE
	CORNER DETAIL
	G
	V	N
	H
A		N

	C		B
	V				B	V
		Fixed
		Closed	V		Fixed
		Operable		Operable						G
					Closed
F	V
						B				V
				V			M			G
	B		B		J	X
							V	K	X
				A		I				V
										A

V

VENT TERMINATION X AIR SUPPLY INLET

AREA WHERE TERMINAL IS NOT PERMITTED CFM145a

	Canadian Installations1	US Installations2
A = Clearance above grade, veranda, porch,	12 in. (30 cm)	12 in. (30 cm)
deck or balcony
B = Clearance to window/door that may be opened	6 in. (15 cm) for appliances <10,000 Btuh	6 in. (15 cm) for appliances <10,000 Btuh
	(3 kW); 12 in (30 cm) for appliances	(3 kW); 9 in. (23 cm) for appliances
	>10,000 Btuh (3 kW) and <100,000 Btuh	>10,000 Btuh (3 kW) and <50,000 Btuh
	(30 kW); 36 in. (91 cm) for appliances	(15 kW); 12 in. (30 cm) for appliances
	>100,000 Btuh (30 kW)	>50,000 Btuh (15 kW)
C = Clearance to permanently closed window	12 in. (305 mm) recommended to	12 in. (305 mm) recommended to
	prevent window condensation	prevent window condensation
D = Vertical clearance to ventilated soffit located
above the terminal within a horizontal distance	18 in. (458 mm)	18 in. (458 mm)
of 2 ft. (610 mm) from the center line of the
terminal
E = Clearance to unventilated soffit	12 in. (305 mm)	12 in. (305 mm)
F = Clearance to outside corner	(See next page.)	(See next page.)
G = Clearance to inside corner	(See next page.)	(See next page.)
H = Clearance to each inside of center line	3 ft. (91 cm) within a height of 15 ft. (4.57 m)	3 ft. (91 cm) within a height of 15 ft. (4.57 m)
extended above meter/regulator assembly	above the meter/regulator assembly	above the meter/regulator assembly
I = Clearance to service regulator vent outlet	3 ft. (91 cm)	3 ft. (91 cm)
J = Clearance to non-mechanical air supply	6 in. (15 cm) for appliances <10,000 Btuh	6 in. (15 cm) for appliances <10,000 Btuh
inlet to building or the combustion air inlet	(3 kW); 12 in. (30 cm) for appliances	(3 kW); 9 in. (23 cm) for appliances
to any other appliance	>10,000 Btuh (3 kW) and <100,000 Btuh	>10,000 Btuh (3 kW) and <50,000 Btuh
	(30 kW); 36 in (91 cm) for appliances	(15 kW); 12 in. (30 cm) for appliances
	>100,000 Btuh (30 kW)	>50,000 Btuh (15 kW)
K = Clearance to a mechanical air supply inlet	6 ft. (1.83 m)	3 ft. (91 cm) above if within 10 ft. (3.05 m)
		horizontally
L = Clearance above paved sidewalk or a	7 ft. (2.13 m)†	7 ft. (2.13 m)†
paved driveway located on public property
M = Clearance under veranda, porch, deck or	12 in. (30 cm)‡	12 in. (30 cm)‡
balcony

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” (450 mm).

1In accordance with current CSA-B149 Installation Codes.

2In accordance with current ANSI Z223.1/ NFPA 54 National Fuel Gas Codes.

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

‡Only permitted if veranda/porch/deck is fully open on a of minimum two sides beneath the floor. NOTES: • Local codes or regulations may require different clearances.

•The special venting system used on Vermont Castings, Majestic Products Direct Vent Fireplaces are certified as part of the appliance, with clearances tested and approved by the listing agency.

Fig. 11 Vent termination clearances

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