Bradford-White Corp BNTV, BNTH, Modulating Boiler warranty Combustion Air and Vent Through Side Wall

Page 16			BRADFORD WHITE CORP.
		U.S. Installations (see note 1)	Canadian Installations (see note 2)
A=	Clearance above grade, veranda, porch,	12 inches (30 cm)	12 inches (30 cm)
	deck, or balcony	See note 6	See note 6
B=	Clearance to window or door that may be	Direct vent only: 12 inches (30cm);	36 inches (91 cm)
	opened	Other than Direct vent: 4 ft (1.2m) below or to
		side of opening; 1 ft (30cm) above opening
C=	Clearance to permanently closed window	See note 4	See note 5
D=	Vertical clearance to ventilated soffit located
	above the terminal within a horizontal	See note 4	See note 5
	distance of 2 feet (61cm) from the center
	line of the terminal
E=	Clearance to unventilated soffit	See note 4	See note 5
F=	Clearance to outside corner	See note 4	See note 5
G=	Clearance to inside corner	3 feet minimum	3 feet (91cm) minimum
H=	Clearance to each side of center line		3 feet (91 cm) within a height 15 feet
	extended above meter/regulator assembly	See note 4	above the meter/regulator assembly
I=	Clearance to service regulator vent outlet	See note 4	3 feet (91 cm)
J=	Clearance to nonmechanical air supply	Direct vent only: 12" (30cm) 80-285; 36" (91cm)
	inlet to building or the combustion air inlet	399-850. Other than Direct vent: 4 ft (1.2m) below	36 inches (91 cm)
	to any other appliance	or to side of opening; 1 ft (30cm) above opening
K=	Clearance to a mechanical air supply inlet	3 feet (91 cm) above if within 10 feet (3 m)	6 feet (1.83 m)
		horizontally
L=	Clearance above paved sidewalk or paved	Vent termination not allowed in this location	Vent termination not allowed in this
	driveway located on public property	for category IV appliances.	location for category IV appliances.
M=	Clearance under veranda, porch, deck,	See note 4	12 inches (30 cm) (see note 3)
	or balcony

Notes:

1.In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.

2.In accordance with the current CAN/CGA-B149 Installation Codes.

3.Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.

4.For clearances not specified in ANSI Z223.1 / NFPA 54, clearance is in accordance with local installation codes and the requirements of the gas supplier.

5.For clearances not specified in CAN/CGA-B149, clearance is in accordance with local installation codes and the requirements of the gas supplier.

6.IMPORTANT: terminal must be placed such that it remains a minimum 12" above expected snow line. Local codes may have more specific requirements, and must be consulted.

*When vent terminal is less than 10 feet (3m) horizontally from a forced air inlet, the terminal must be at least 3 feet (0.9m) above the air inlet.

Figure 12. Combustion Air and Vent Through Side Wall.