Справочник Пользователя для American Water Heater VGD625T 100
29
TERMINATION CLEARANCES SIDEWALL POWER VENT
V
X
VENT TERMINAL
AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
v
v
A
G
V
FIXED
CLOSED
FIXED
CLOSED
OPERABLE
OPERABLE
V
C
B
B
B
B
F
B
V
V
A
J
V
H
M
X
X
V
V
K
B
E
D
L
POWER VENT
(using room air for combustion)
EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION
Figure: 15
Vent terminal clearances for “Power Vent” installations. Power Vent configurations use room air for combustion.
US INSTALLATIONS 1
US INSTALLATIONS 1
A
Clearance above grade,
veranda, porch, deck or
balcony
12 inches (30 cm)
H
Clearance to each side
of center line extended
above meter/regulator
assembly
3 feet (91 cm) within a
height 15 feet (4.5 m)
above the meter/regulator
assembly*
B
Clearance to window
or door that may be
opened
4 feet (1.2 m) below
or to side of opening;
1 foot (30 cm) above
opening
I
Clearance to service
regulator vent outlet
3 feet (91 cm)*
C
Clearance to
permanently closed
window
12 inches (30 cm)*
J
Clearance to a non
mechanical air supply
inlet into building or
combustion air inlet to
any other appliance
4 feet (1.2 m) below or to
side of opening; 1 foot
(30 cm) above opening.
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
12 inches (30 cm)*
K
Clearance to a
mechanical air supply
inlet
3 feet (91 cm) above if
within
10 feet (3 m) horizontally
E
Clearance to
unventilated soffit
12 inches (30 cm)*
L
Clearance above paved
sidewalk or paved
driveway located on
public property
7 feet (2.13 m)
F
Clearance to outside
corner
2 feet (60 cm)*
M
Clearance under
veranda, porch, deck, or
balcony
12 inches (30 cm) ‡
G
Clearance to inside
corner
18 inches (45 cm)*
1 In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
† A vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces.
‡ 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.
† A vent shall not terminate where it may cause hazardous frost or ice accumulations on adjacent property surfaces.
‡ 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.