Superior SDVPF-N-B Installation Instructions Manual page 7

VENT TERMINATION CLEARANCES
EXTERIOR HORIZONTAL VENT TERMINATION CLEARANCE REQUIREMENTS
*
See Item D in the Text Below.
Exterior Wall
*18"
V
Horizontal
Termination
6"
Inside Corner
Detail D
B
V
L
F
V
A
A = Clearance above grade, veranda, porch,
deck, or balcony.
B = Clearance to window or door that may be
opened.
C = Clearance to permanently closed window
D = Vertical clearance to ventilated soffit
located above the terminal within a horizontal
distance of 18 inches (458mm) from the center
line of the terminal
E = Clearance to unventilated soffit
F = Clearance to outside corner
G = Clearance to inside corner
H = Clearance to each inside of center line
extended above meter/regulator assembly
I = Clearance to service regulator vent outlet
J = Clearance to nonmechanical air supply inlet
to building or the combustion air inlet to any
other appliance
K = Clearance to a mechanical air supply inlet
L = Clearance above paved sidewalk or paved
diveway located on public property
M = Clearance under veranda, porch, deck or
balcony
* In accordance with the current CSA-B149.1 National Gas And Propane Installation Code.
** In accordance with the curent ANSI SZ223.1/NFPA 54 National Fuel Gas Codes.
‡ A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves
both dwellings.
*‡ Only permitted if veranda, porch, deck or balcony is fully open on a minimum 2 sides beneath the floor:
• 2" Clearance to Non-Combustibles for SV4.5HT-2 Only.
Figure 5
Corner Detail
V
Ventilated Soffit
A
B
C
V
V
Fixed
Closed
Window
V
C
B
C
C B
X = Air Supply Inlet
V = Vent Termination
12 inches (30cm)*
6 in (15cm) for appliances
< 10,000 Btuh (3kW), 12 in (30cm)
for appliances > 10,000 Btuh (3kW) and
< 100,000 Btuh (30kW), 36 inches (91cm)
for appliances > 100,000 Btuh (30kW)*
12" (305mm) recommended to prevent
window condensation
18" (458mm)
12" (305mm)
5" (12.7cm) minimum
2" (5.08cm) minimum - SV4.5HT-2 •
6" (15.2cm) minimum - SV4.5HTSS
3 feet (91cm) within a height of 15 feet
above the meter/regulator assembly*
3 feet (91cm)*
6 in (15cm) for appliances
< 10,000 Btuh (3kW), 12 in (30cm)
for appliances > 10,000 Btuh (3kW) and
< 100,000 Btuh (30kW), 36 inches (91cm)
for appliances > 100,000 Btuh (30kW)*
6 feet (1.83m)*
7 feet (2.13m)‡
12 inches (30cm)*‡
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE
NOTE: Local Codes Or Regulations
May Require Different Clearances.
NOTE: Location Of The Vent Termination
Inside
Must Not Interfere With Access To The
Electrical Service.
G
= 9" in U.S.
� A
= 12" in Canada
3 ft.
X
�
�
A
A
Operable
Window
3 ft.
J
B
= Area where Termination is not Permitted
Canadian Installation*
P
N
V
Q
H
M
V
I
K
US Installation**
12 inches (30cm)**
6 in (15cm) for appliances
< 10,000 Btuh (3kW), 9 in (23cm)
for appliances > 10,000 Btuh (3kW) and
< 50,000 Btuh (15kW), 12 inches (30cm)
for appliances > 50,000 Btuh (15kW)**
9" (229mm) recommended to prevent
window condensation
18" (458mm)
12" (305mm)
5" (12.7cm) minimum
2" (5.08cm) minimum - SV4.5HT-2 •
6" (15.2cm) minimum - SV4.5HTSS
3 feet (91cm) within a height of 15 feet
above the meter/regulator assembly**
3 feet (91cm)**
6 in (15cm) for appliances
< 10,000 Btuh (3kW), 9 in (23cm)
for appliances > 10,000 Btuh (3kW) and
< 50,000 Btuh (15kW), 12 inches (30cm)
for appliances > 50,000 Btuh (15kW)**
3 feet (91cm) above if within 10 feet (3m)
horizontally**
7 feet (2.13m)‡
12 inches (30cm)‡
N
O
D E
V
X
7