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P a g e
VENT TERMINATION CLEARANCES
A
*12” (30 cm) min.
Clearances above grade, veranda, porch, deck, or balcony
B
*12” (30 cm) min.
Clearance to window or door that may be opened
C
12” (30 cm) min.
Clearance to permanently closed window recommended to prevent
condensation on window
D
**24” (61 cm) min. for Flare units 100”
**18” (46 cm) min. for Flare units 80” and below
(vinyl surfaces require 24” (61 cm) min.)
Vertical clearance to ventilated soffit located above the terminal within a
horizontal distance of 2 feet (60 cm) from the edge of the terminal
E
30” (76 cm) min. for Flare units 80” and 100”
18” (46 cm) min. for Flare units 70” and below
(vinyl surfaces require 24 inches (61 cm) min.)
Clearance to unventilated soffit.
F
6” (15 cm) min.
Clearance to outside corner
G
6” (15 cm) min.
Clearance to inside corner
H
3’ (90 cm) min.
*Not to be installed above a meter/regulator assembly within 3 feet (90 cm)
horizontally from the centerline of the regulator
I
3 feet (90 cm) min.
Clearance to service regulator vent outlet
J
*12 inches (30 cm) min.
Clearance to non-mechanical air supply inlet to building or the combustion air
inlet to any other appliance
K
*6 feet (1.8 m) min.
Clearance to a mechanical air supply inlet
L
*7 feet (2.1 m) min.
^ Clearance above paved sidewalk or a paved driveway located on public
property
M
**24” inches (76 cm) min. for Flare units 100”
**18” inches (46 cm) min. for Flare units 80” and
below (vinyl surfaces require 24 inches (61 cm)
min.)
Clearance under veranda, porch, deck, or balcony
