Vent Pipe Termination - American Water Heater vG6250t76nv Instruction Manual

terMInatIon clearances sIdewall power vent
D
E
v
L
V
Vent terminal clearances for "Power Vent" installations. Power Vent configurations use room air for combustion.
Clearance above grade, veranda, porch,
a
deck or balcony
Clearance to window or door that may
B
be opened
c
Clearance to 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
e
Clearance to unventilated soffit
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 floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation instructions.

vent pIpe terMInatIon

The first step is to determine where the vent pipe will terminate.
See Figures 15, 20 and 21. The vent may terminate through a
sidewall as shown in Figure 20 or through the roof as shown
in Figure 21.
The vent system must terminate so that proper clearances are
maintained as cited in local codes or the current edition of the
National Fuel Gas Code, (ANSI Z223.1, 12.9.1 through 12.9.4).
(using room 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
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)*
18 inches (45 cm)*
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 15.
Clearance to each side of center line
h
extended above meter/regulator assembly
Clearance to service regulator vent outlet
I
Clearance to a non mechanical air supply
j
inlet into building or combustion air inlet to
any other appliance
K
Clearance to a mechanical air supply inlet
Clearance above paved sidewalk or paved
l
driveway located on public property
Clearance under veranda, porch, deck, or
M
balcony
Instructions on proper installation through a sidewall are provided
in Figure 15.
Plan the vent system layout so that proper clearances are
maintained from plumbing and wiring.
Vent pipes serving power vented appliances are classified by
building codes as "vent connectors". Required clearances from
combustible materials must be provided in accordance with
information in this manual under LOCATING THE NEW WATER
HEATER and INSTALLING THE WATER HEATER, and with the
National Fuel Gas Code and local codes.
19
H
M
X
V
K
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) ‡