Termination Clearances Sidewall Power Vent - A.O. Smith VB-500, VB-750 Instruction Manual

TERMINATION CLEARANCES SIDEWALL POWER VENT

D
v
L
V
Vent terminal clearances for "Power Vent" installations. Power Vent configurations use room air for combustion.
CANADIAN INSTALLATIONS
Clearance above grade,
A
veranda, porch, deck or 12 inches (30 cm)
balcony
6 inches (15 cm) for appliances up to
10,000 Btu/hr (3 kW), 12 inches (30
Clearance to window
cm) for appliances between 10,000
B
or door that may be
Btu/hr (3 kW) and 100,000 Btu/hr (30
opened
kW), 36 inches (91 cm) for appliances
above 100,000 Btu/hr (30 kW)
Clearance to
C
permanently closed 12 inches (30 cm)*
window
Vertical clearance to
ventilated soffit located
above the terminal
D
within a horizontal 12 inches (30 cm)*
distance of 2 feet (61
cm) from the center line
of the terminal
Clearance to
E
12 inches (30 cm)*
unventilated soffit
Clearance to outside
F
2 feet (60 cm)*
corner
Clearance to inside
G
8 ft. (2.44 m)*
corner
1 In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
2 In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
† A vent should not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation instructions.
(using room air for combustion)
EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION
E
B
v
C
F IX E D
V
C L O S E D
O P E R A B L
V
F
B
X
VENT TERMINAL AIR SUPPLY INLET
1
US INSTALLATIONS
12 inches (30 cm)
4 feet (1.2 m) below
or to side of opening;
1 foot (30 cm) above
opening
12 inches (30 cm)*
12 inches (30 cm)*
12 inches (30 cm)*
2 feet (60 cm)*
8 ft. (2.44 m)*
POWER VENT
G
V
A
B
B
V
F IX E D
C L O S E D
E
O P E R A B L
V
X
E
B
V
B
J
A
AREA WHERE TERMINAL IS NOT PERMITTED
Figure 9F.
2
Clearance to each side
of center line extended
H
above meter/regulator
assembly
Clearance to service
I
regulator vent outlet
Clearance to a non
mechanical air supply
J
inlet into building or
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
M
veranda, porch, deck, or
balcony
14
H
M
X
V
K
1
CANADIAN INSTALLATIONS
3 feet (91 cm) within a height 15 feet
(4.5 m) above the meter/
regulator assembly
3 feet (91 cm)
6 inches (15 cm) for appliances up
to 10,000 Btu/hr (3 kW), 12 inches
(30 cm) for appliances between
10,000 Btu/hr (3 kW) and 100,000
Btu/hr (30kW), 36 inches (91cm)
for appliances above 100,000 Btu/
hr (30 kW)
6 feet (1.83 m)
7 feet (2.13 m)†
12 inches (30 cm) ‡
2
US INSTALLATIONS
3 feet (91 cm) within a
height 15 feet (4.5 m)
above the meter/regulator
assembly*
3 feet (91 cm)*
4 feet (1.2 m) below or to
side of opening; 1 foot
(30 cm) above opening.
3 feet (91 cm) above if
within
10 feet (3 m) horizontally
7 feet (2.13 m)
12 inches (30 cm) ‡