KB Series Manual 7
Direct Vent Terminal Clearances (Indoor Units)
[1] A vent shall not terminate directly above a sidewalk or paved driveway
that is located between two single family dwellings and serves both
dwellings.
[2] Permied only if veranda, porch, deck, or balcony is fully open on a
minimum of two sides beneath the oor.
For clearances not specied in ANSI Z223.1/NFPA 54, clearances are in
accordance with local installaon codes and the requirements of the gas
supplier.
Clearance to opposite wall is 24 inches (60 cm).
For indoor models, you must install a vent terminaon to bring in combuson air and expel exhaust.
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 36 inches (91 cm) 12 inches (30 cm)
C Clearance to permanently closed window * *
D
Vercal clearance to venlated sot, located above the
terminal within a horizontal distance of 2 feet (61 cm) from the
center line of the terminal
* *
E Clearance to unvenlated sot * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H
Clearance to each side of center line extended above meter/
regulator assembly
3 feet (91 cm) within a height 15 feet
(4.5 m) above the meter/regulator
assembly
*
I Clearance to service regulator vent outlet 36 inches (91 cm) *
J
Clearance to nonmechanical air supply inlet to building or the
combuson air inlet to any other appliance
36 inches (91 cm) 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 (2.13 m) *
M Clearance under veranda, porch, deck, or balcony 12 inches (30 cm) *
INSIDE
CORNER DETAIL
FIXED
CLOSED
OPERABLE
FIXED
CLOSED
OPERABLE
B
B
B
A
J
B
M
C
F
B
B
E
D
L
G
A
H
K
I
AIR SUPPLY INLET
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
SNOW
TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line