Termination Clearances Sidewall Direct Vent - A.O. Smith Vertex 100 Power Vent DV Series 120 Instruction Manual

terMInatIon clearances sIdewall dIrect vent

D
E
v
L
V
Vent terminal clearances for "Direct Vent" installations. Direct Vent configurations use outdoor air for combustion.
a
b
c
d
e
f
G
1 In accordance with the current ANSI Z223.1/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 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 outdoor air for combustion)
EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION
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
us InstallatIons
Clearance above grade,
veranda, porch, deck or 12 inches (30 cm)
balcony
6 inches (15 cm)
for appliances up to
10,000 Btu/hr (3 kW),
9 inches (23 cm) for
Clearance to window or appliances between
door that may be opened 10,000 Btu/hr (3 kW)
and 50,000 Btu/hr (15
kW), 12 inches (30 cm)
for appliances above
50,000 Btu/hr (15 kW)
Clearance to
permanently closed 6 inches (15 cm)*
window
Vertical clearance to
ventilated soffit located
above the terminal within
12 inches (30 cm)*
a horizontal distance of
2 feet (61 cm) from the
center line of the terminal
Clearance to unventilated
12 inches (30 cm)*
soffit
Clearance to outside
2 feet (60 cm)*
corner
Clearance to inside
18 inches (45 cm)*
corner
DIRECT VENT
G
V
A
B
B
V
F IX E D
C L O S E D
O P E R A B L E
V
X
E
B
V
B
J
A
AREA WHERE TERMINAL IS NOT PERMITTED
fIGure 14
1
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
l
paved driveway located
on public property
Clearance under
M
veranda, porch, deck,
or balcony
24
H
M
X
V
K
1
us 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), 9 inches (23
cm) for appliances between
10,000 Btu/hr (3 kW) and
50,000 Btu/hr (15 kW), 12
inches (30 cm) for appliances
above 50,000 Btu/hr (15 kW)
3 feet (91 cm) above if within
10 feet (3 m) horizontally
7 feet (2.13 m)†*
12 inches (30 cm) ‡*