Vent terminal clearances, U.s. installations, Page 4 – Louisville Tin and Stove DVCF408B-R User Manual
Page 4: Reference letter to drawing canadian installations
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REFERENCE LETTER TO
DRAWING
CANADIAN INSTALLATIONS¹
U.S. INSTALLATIONS²
A = Clearance above grade, veranda,
porch, deck, or balcony
12 Inches (30 cm)
12 Inches (30 cm)
B = Clearance to window or door that
may be opened
12 Inches (30 cm)
DVCF40__ 9 Inches (23 cm)
DVCF55__ 12 Inches (30 cm)
DVCF65__ 12 Inches (30 cm)
C = Clearance to permanently closed
window
12 Inches (30 cm)
DVCF40__ 9 Inches (23 cm)
DVCF55__ 12 Inches (30 cm)
DVCF65__ 12 Inches (30 cm)
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
18 Inches (46 cm)
18 Inches (46 cm)
E = Clearance to unventilated soffit
24 Inches (61 cm)
24 Inches (61 cm)
F = Clearance to outside corner
12 Inches (30 cm)
12 Inches (30 cm)
G = Clearance to inside corner
12 Inches (30 cm)
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 (4.5m) above the meter/regulator
assembly
Clearance in accordance with local
installation codes and the requirements
of the gas supplier
I = Clearance to service regulator vent
outlet
3 Feet (91 cm)
Clearance in accordance with
local installation codes and the
requirements of the gas supplier
J = Clearance to nonmechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
12 Inches (30 cm)
DVCF40__ 9 Inches (23 cm)
DVCF55__ 12 Inches (30 cm)
DVCF65__ 12 Inches (30 cm)
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 (2.13m) A vent shall not terminate
directly above a sidewalk or paved
driveway that is located between two
single family dwellings and serves both
dwellings.
Clearance in accordance with
local installation codes and the
requirements of the gas supplier.
M = Clearance under veranda, porch,
deck, or balcony
12 Inches (30 cm) permitted only if
veranda, porch, deck, or balcony is fully
open on a minimum of two sides.
Clearance in accordance with
local installation codes and the
requirements of the gas supplier.
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
Vent Terminal
Air Supply Inlet
Area where terminal is not permitted
VENT TERMINAL CLEARANCES
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