Bradford White EFTM Installation & Operating Manual page 19

Internet Version for Reference Only
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
widow
D= Vertical clearance to
ventilated soffit
located above the
terminal within a
horizontal distance of
2 feet (61 cm) 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 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".
2
Canadian US Installations
1
Installations
12 inches 12 inches
(30 cm) (30 cm)
36 inches 4 feet (1.2 m)
(91 cm) below or to the
side of opening;
12 inches (30
cm) above
opening
*b *b
*b *b
*b *b
*b *b
36 inches 36 inches
(91 cm)*a (91 cm)*a
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
19
Canadian US Installations
1
Installations
3 feet (91 cm) within a
height 15 feet (4.6 m)
above the
meter/regulator
assembly
36 inches
(91 cm)
36 inches 4 feet (1.2m)
(91 cm) below or to side
of opening; 12
inches (30 cm)
above opening.
6 feet 3 feet (91 cm)
(1.83 m) above if within
10 feet
horizontally
7 feet 7 feet
(2.13 m)† (2.13 m)†
12 inches (30 cm) ‡
2
*b
*b
*b