DescriptionRef
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 2 feet (61 cm)
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 side 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 driveway located
on public property
Clearance under veranda, porch, deck, or balcony
M=
1
In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code
* Clearance in accordance with local installation codes and the requirements of the gas supplier.
b Clearance to opposite wall is 24 inches (60 cm).
A
Clearance Requirements from Vent Terminations to Building Openings
<When supplying combustion air from the outdoors (Direct Vent)>
"MMDMFBSBODFSFRVJSFNFOUTBSFJOBDDPSEBODFXJUI"/4*;BOEUIF/BUJPOBM'VFM(BT$PEF
"/4*;
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