Termination Clearances Sidewall Power Vent - State Water Heaters 301 Series Instruction Manual

TERMINATION CLEARANCES SIDEWALL POWER VENT

D
L
Vent terminal clearances for "Power Vent" installations. Power Vent configurations use room air for combustion.
Type of Clearance
Clearance above grade,
A
veranda, porch, deck or 12 inches (30 cm)
balcony
• 6 in (15 cm) for appli-
ances ≤ 10,000 Btuh (3
kW)
• 12 in (30 cm) for appli-
Clearance to window or
B
ances > 10,000 Btuh (3
door that may be opened
kW) and ≤ 100,000 Btuh
• (30 kW), 36 in (91 cm)
for appliances > 100,000
Btuh (30 kW)
Clearance to permanent-
C
12 inches (30 cm)*
ly closed window
Vertical clearance to
ventilated soffit located
above the terminal within
D
12 inches (30 cm)*
a horizontal distance of
2 feet (61 cm) from the
center line of the terminal
Clearance to unventi-
E
12 inches (30 cm)*
lated soffit
Clearance to outside
F
2 feet (60 cm)*
corner
Clearance to inside
G
18 inches (45 cm)*
corner
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.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation instructions
E
B
C
F
B
Figure 51. Power Vent Using Room Air
Canadian US
1
Installations 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)*
G
H
B
B
B
I
B
J
Type of Clearance
2
Clearance to each side Clearance in accordance with
of center line extended local installation codes and
H
above meter/regulator the requirements of the gas
assembly supplier
Above a regulator within 3 ft
(91 cm) horizontally of the ver-
Clearance to service
I
tical center line of the regulator
regulator vent outlet
vent outlet to a maximum verti-
cal distance of 15 ft (4.5 m)
•
Clearance to a non •
mechanical air supply
J
inlet into building or
combustion air inlet to
any other appliance •
Clearance to a me-
K
6 feet (1.83 m)
chanical air supply inlet
Clearance above
paved sidewalk or
L
7 feet (2.13 m)†
paved driveway located
on public property
Clearance under
M
veranda, porch, deck, 12 inches (30 cm) ‡
or balcony
37
M
K
Canadian
1
Installations Installations
Clearance in accor-
dance with local in-
stallation codes and
the requirements of
the gas supplier
Clearance in accor-
dance with local in-
stallation codes and
the requirements of
the gas supplier
6 in (15 cm) for appliances
≤ 10,000 Btuh (3 kW)
12 in (30 cm) for appli-
4 feet (1.2 m) below
ances > 10,000 Btuh (3
or to side of opening;
kW) and ≤ 100,000 Btuh
1 foot (30 cm) above
(30 kW)
opening.
36 in (91 cm) for appli-
ances >100,000 Btuh
(30 kW)
3 feet (91 cm) above
if within 10 feet (3 m)
horizontally
7 feet (2.13 m)
12 inches (30 cm) ‡
US
2