1019061-B
Page 5
CLEARANCES
E
D
B
FIXED
CLOSED
FIXED
CLOSED
OPERABLE
C
H
B
B
B
B
F
B
A
J
I
M
K
OPERABLE
Clearance in accordance
with local installation codes &
requirements of the gas supplier
A
Clearance above grade, veranda, porch, deck, or balcony
E
Clearance to unventilated soffit
C
Clearance to permanently closed window
G
Clearance to inside corner
I
Clearance to service regulator vent outlet
B
Clearance to window or door that may be opened
F
Clearance to outside corner
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
H
Clearance to each side of center line extended above
meter/regulator assembly
M
Clearance under veranda, porch, deck, or balcony
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
L
Clearance above paved sidewalk or paved driveway
located on public property
12 Inches (30 cm)
18 Inches (46 cm)
12 Inches (30 cm)
12 Inches (30 cm)
3 Feet (91 cm)
12 Inches (30 cm)
12 Inches (30 cm)
12 Inches (30 cm)
6 Feet (1.83 m)
3 Feet (91 cm)
within a height
15 Feet (4.5m) above the meter /
regulator assembly
12 Inches (30 cm)
Permitted only if veranda, porch,
deck, or balcony is fully open on a
minimum of two sides
18 Inches (46 cm)
7 Feet (2.13m)
A vent shall not terminate directly
above a sidewalk or paved driveway
that is located between two single
family dwellings & serves both dwellings
12 Inches (30 cm)
18 Inches (46 cm)
9 Inches (23 cm)
12 Inches (30 cm)
9 Inches (23 cm)
12 Inches (30 cm)
12 Inches (30 cm)
3 Feet (91 cm) above if within
10 Feet (3 m) horizontally
Clearance in accordance
with local installation codes &
requirements of the gas supplier
18 Inches (46 cm)
REFERENCE LETTER TO DRAWING
CANADIAN
INSTALLATIONS*
U.S. INSTALLATIONS**
G
A
Inside
Corner
Detail
*In accordance with the current CSA-B149.1
Natural Gas and Propane Installation Code
**In aaccordance with the current ANSI
Z223.1 / NFPA 54 National Fuel Gas Code
= Air Supply Inlet
= Vent Terminal
= Area where terminal is
not permitted
