Termination Clearances Sidewall Power Vent - A.O. Smith RESIDENTIAL GAS WATER HEATERS Installation And Operating Manual

TERMINATION CLEARANCES SIDEWALL POWER VENT

D
E
V
B
V
L
Vent terminal clearances for "Power Vent" installations. Power Vent confi gurations use room air for combustion.
Clearance above grade,
A veranda, porch, deck or
balcony
B Clearance to window or door
that may be opened
Clearance to permanently
C
closed window
Vertical clearance to ventilated
soffi t located above the
D terminal within a horizontal
distance of 2 ft. (61cm) from
the center line of the terminal
Clearance to unventilated
E
soffi t
F Clearance to outside corner
G Clearance to inside corner
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 fl oor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the
manufacturer's installation instructions.
R
R N E
E C O
I N S I D
I L
D E T A
G
V
A
C
D
F I X E
V
S E D
C L O
V
F
B
12 in. (30cm)
4 ft. (1.2m) below or
to side of opening;
1 ft. (30cm) above
opening
12 in. (30cm)*
12 in. (30cm)*
12 in. (30cm)*
2 ft. (60cm)*
18 in. (45cm)*
V
Vent terminal
X Air supply inlet
Area where is not permitted
B
B
V
D
F I X E
S E D
C L O
L E
R A B
O P E
V
X
B
V
J
B
A
Figure 29
Clearance to each side of
H center line extended above
meter/regulator assembly
Clearance to service regulator
I
vent outlet
Clearance to a non
mechanical air supply inlet into
J
building or combustion air inlet
to any other appliance
K Clearance to a mechanical air
supply inlet
Clearance above paved
L sidewalk or paved driveway
located on public property
Clearance under veranda,
M
porch, deck, or balcony
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I M
X
V
K
Gas meter / regulator
N/A
3 ft. (91cm)*
4 ft. (1.2m) below or
to side of opening;
1 foot (30cm) above
opening.
3 ft. (91cm) above
if within 10 ft. (3m)
horizontally
7 ft. (2.13m) †
12 in. (30cm) ‡
27