A.O. Smith 300 Series, Инструкция по эксплуатации

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29
SIDEWALL TERMINATION CLEARANCES OTHER THAN DIRECT VENT
Fixed
Closed
Operable
Fixed
closed
Operable
B
V
V
V
V
V
V
V
V
C
B
B
X
A
M
K
Regulator vent outlet
In the event no
regulator is present,
H and I can be
disregarded
.
V
Legend:
= Vent terminal
X
= Air supply inlet
= Area where terminal is not permitted
B
B
J
F
X
B
L
E
D
Inside
corner detail
V
A
G
H
15 ft
I
Figure 25. Other than Direct Vent Using Outside Air
Vent terminal clearances for “Direct Vent” installations. Direct Vent configurations use outdoor air for combustion.
Termination Clearances for Sidewall Direct Vent
Type of Clearance
Canadian Installations
1
US Installations
2
A
Clearance above grade, ve-
randa, porch, deck or balcony
12 inches (30 cm) 12 inches (30 cm)
B
Clearance to window or door
that may be opened
•
6 in (15 cm) for appliances ≤
10,000 Btuh (3 kW)
•
12 in (30 cm) for appliances
> 10,000 Btuh (3 kW) and ≤
100,000 Btuh (30 kW),
•
36 in (91 cm) for appliances
> 100,000 Btuh (30 kW)
•
4 feet (1.2 m) below or to
side of opening;
•
1 foot (30 cm) above opening
C
Clearance to permanently
closed window
6 inches (15 cm)* 6 inches (15 cm)*
D
Vertical clearance to ventilated
soffit located above the termi-
nal within a horizontal distance
of 2 feet (61 cm) from the
center line of the terminal
12 inches (30 cm) 12 inches (30 cm)
E
Clearance to unventilated soffit 12 inches (30 cm) 12 inches (30 cm)
F
Clearance to outside corner 2 feet (60 cm)* 2 feet (60 cm)*
G
Clearance to inside corner 18 inches (45 cm)* 18 inches (45 cm)*
H
Clearance to each side of
center line extended above
meter/regulator assembly
3 ft (91 cm) within a height 15 ft
(4.6 m)
Clearance in accordance with local
installation codes and the require-
ments of the gas supplier
Termination Clearances for Sidewall Direct Vent
Type of Clearance
Canadian Installations
1
US Installations
2
I
Clearance to service regulator
vent outlet
3 ft (1.83 m)
Clearance in accordance with local
installation codes and the require-
ments of the gas supplier
J
Clearance to a non mechanical
air supply inlet into building
or combustion air inlet to any
other appliance
•
6 in (15 cm) for appliances ≤
10,000 Btuh (3 kW)
•
12 in (30 cm) for appliances
> 10,000 Btuh (3 kW) and ≤
100,000 Btuh (30 kW)
•
36 in (91 cm) for appliances
>100,000 Btuh (30 kW)
•
4 feet (1.2 m) below or to
side of opening;
•
1 foot (30 cm) above opening
K
Clearance to a mechanical air
supply inlet
6 feet (1.83 m)
3 feet (91 cm) above if within 10
feet (3 m) horizontally
L
Clearance above paved
sidewalk or paved driveway
located on public property
7 feet (2.13 m)†
7 ft (2.13 m) for mechanical draft
systems (Category I appliances);
vents for Category II and IV ap-
pliances cannot be located above
public walkways or other areas
where condensate or vapor can
cause a nuisance or hazard
M
Clearance under veranda,
porch, deck, or balcony
12 inches (30 cm) ‡ 12 inches (30 cm) ‡
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 shall not terminate directly above a sidewalk or paved driveway that is
located between two single family dwellings and serves both dwellings 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.