Bradford White EF120T Installation & Operation Manual With Troubleshooting Manual page 22

Figure 11b – Direct Vent and Powered Direct Vent Terminal Clearances
Clearance above
grade, veranda,
A=
porch, deck or
balcony
Clearance to window
B=
or door that may be
opened
Clearance to
C=
permanently closed
window
Vertical clearance to
ventilated soffit
located above the
terminal within a
D=
horizontal distance of
2 feet (61 cm) from
the center line of the
terminal
Clearance to
E=
unventilated soffit
Clearance to outside
F=
corner
Clearance to inside
G=
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 shall 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".
(Power Direct Vent, intake and exhaust)
Canadian US
1
Installations Installations
12 inches 12 inches
(30 cm) (30 cm)
36 inches 12 inches
(91 cm) (30 cm)
*b *b
12 inches 12 inches
(30 cm) *a (30 cm) *a
12 inches 12 inches
(30 cm) *a (30 cm) *a
*b *b
36 inches 36 inches
(91 cm) *a (91 cm) *a
2
Clearance to each side
of center line extended
H=
above meter/regulator
assembly
Clearance to service
I=
regulator vent outlet or
oil tank vent
Clearance to non-
mechanical air supply
J=
inlet to building or the
combustion air inlet to
any other appliance
Clearance to a
K=
mechanical air supply
inlet
Clearance above paved
sidewalk or paved
L=
driveway located on
public property
Clearance under a
M= veranda, porch, deck, or
balcony
22
Canadian
1
Installations Installations
3 feet (91 cm) within a
height 15 feet (4.6 m)
above the
meter/regulator
assembly
36 inches
(91 cm)
36 inches 12 inches
(91 cm)
3 feet (91 cm)
6 feet above if within
(1.83 m) 10 feet (3.1 m)
horizontally
7 feet
(2.13 m) †
12 inches 12 inches
(30 cm) ‡ (30 cm) ‡
US
2
*b
*b
(30 cm)
*b