Lennox Hearth L20 BF-2 - Manual (Page 10)

INSTALLATION - MODEL L20 DVF-2 ONLY
PAGE 10
HORIZONTAL VENT TERMINATION REQUIREMENTS
The venting terminals should not be recessed into a wall or siding.
A = 2” Clearances above grade, veranda, porch, deck or bal-
cony.
B = 12” Clearance to window or door that may be opened.
C = 9” (USA) Clearance to permanently closed window.
12”
(CAN)
D = 24” Vertical clearance to ventilated soffit located above the
terminal within a horizontal distance of 2 feet (60 cm)
from the center-line of the terminal.
E = 12” Clearance to unventilated soffit.
F = 9” Clearance to outside corner.
G = 6” Clearance to inside corner.
H = 3 ft. (USA) Not to be installed above a meter/regulator
assembly within 3 feet (90 cm) horizontally from the
centerline of the regulator.
I = 3 ft. (USA) Clearance to service regulator vent outlet.
6 ft.(CAN)
J = 9” (USA) Clearance to non-mechanical air supply inlet to
building or the combustion air inlet to 12“ (CAN) any
other appliance.
K = 3 ft. (USA) Clearance to a mechanical air supply inlet. 6 ft.
(CAN)
L* = 7 ft. (USA) Clearance above paved side-walk or a paved
driveway located on public property.
M**= 12” Clearance under veranda, porch, deck or balcony
*
A vent shall not terminate directly above a side-walk or paved
driveway which is located between two single family dwell-
ings and serves both dwellings.
** Only permitted if veranda, porch, deck or balcony is fully
open on a minimum of 2 sides beneath the floor.
• Note: Local Codes or Regulations may require different clear-
ances.