Bradford White EFR160T120 Series Installation & Operating Manual page 22

Figure 12a. Vent Terminal Clearances (Other than Direct Vent or "Power Vented" Installations)
A= Clearance above
grade, veranda, porch,
deck or balcony
B= Clearance to widow or
door that may be
opened
C= Clearance to
permanently closed
window
D= Vertical clearance to
ventilated soffit
located above the
terminal within a
horizontal distance of
2 feet (.61 m) from the
center line of the
terminal
E= Clearance to
unventilated soffit
F= Clearance to outside
corner
G= Clearance to inside
corner
1
In accordance with the current CAN/CGA-B149 Installation Codes.
2
In accordance with the current ANSI Z223.1-(Latest Edition)/NFPA 54 National Fuel Gas Code.
† A vent must not terminate directly above a sidewalk or paved driveway that is located between two single-family dwellings and
serves both dwellings.
‡ Permitted only if a veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.
*a) A minimum clearance value determined by testing in accordance with section 2.20.
*b) "Clearance in accordance with local installation codes and the requirements of the gas supplier".
Canadian US
1
Installations Installations
12 inches 12 inches
(30.5 cm) (30.5 cm)
36 inches 4 feet (1.2 m)
(91.4 cm) below or to the
side of opening;
12 inches
(30.5 cm)
above opening
*b *b
*b *b
*b *b
*b *b
36 inches 36 inches
(91.4 cm)*a (91.4 cm)*a
2
H= Clearance to each side
of center line extended
above meter/regulator
assembly
I= Clearance to service
regulator vent outlet or
oil tank vent
J= Clearance to non-
mechanical air supply
inlet to building or the
combustion air inlet to
any other appliance
K= Clearance to a
mechanical air supply
inlet
L= Clearance above paved
sidewalk or paved
driveway located on
public property
M= Clearance under a
veranda, porch, deck, or
balcony
22
Canadian US Installations
1
Installations
3 feet (.9 m) within a
height 15 feet (4.6 m)
above the
meter/regulator
assembly
36 inches
(91.4 cm)
36 inches 4 feet (1.2 m)
below or to side
(91.4 cm)
of opening; 12
inches (30.5 cm)
above opening.
6 feet 3 feet (.9 m)
(1.8 m) above if within
10 feet (3 m)
horizontally
7 feet
(2.1 m)†
12 inches (30.5 cm)‡
2
*b
*b
7 feet
(2.1 m)†
*b