Page 24
Vista 38 ST See-thru Gas Fireplace
rev.110331
Appendix A - Termination Locations
A
= clearance to the termination frame above grade, veranda, porch, deck, or balcony [16
inches (41 cm) minimum]
B
= clearance to door, or sides and top of window, that may be opened [16 inches (41 cm)
minimum for appliances
≤
100 000 BTU/H (30kW)]
C
= clearance to bottom of window that may be opened horizontally [36 inches (92 cm)
minimum for appliances
≤
100 000 BTU/H (30kW)]
D
= no clearance to permanently closed window when installed with approved glass penetration
termination
E
= clearance to permanently closed window [16 inches 41 cm recommended to prevent
condensation on window]
F
= vertical clearance to ventilated soffit located above the termination within a horizontal
distance of 2 feet (61 cm) from the centerline of the termination [22 inches (56 cm)
minimum]
G
= clearance to unventilated soffit [16 inches (41 cm) minimum to non-combustibles]
[22 inches (56 cm) minimum to combustibles]
H
= clearance to outside corner [9 inches (23 cm) minimum]
I
= clearance to inside corner [12 inches (31 cm) minimum]
J
= * not to be installed above a meter/regulator assembly within 40" (103 cm) horizontally
from the centerline of the regulator
K
= clearance to service regulator vent outlet [3 feet minimum in the United States] [*6 feet
(1.8 m) minimum in Canada]
L
= clearance to non-mechanical air supply inlet to building or the combustion air inlet to any
other appliance [16 inches (41 cm) minimum for appliances
≤
100 000 BTU/H (30kW)]
M
= clearance to mechanical air supply inlet [*6 feet (1.8 m) minimum]
N
=
†
clearance above paved sidewalk or a paved driveway located on public property [*7 feet
(2.1 m) minimum]
P
= clearance under veranda, porch, deck, or balcony [16 inches (41 cm) minimum
‡
to
non-combustibles][22 inches (56 cm) minimum
‡
to combustibles]
Q
= clearance above a roof [24 inches (61 cm) minimum]
R
= clearance to adjacent walls and neighboring buildings [18 inches (46 cm) minimum]
S
= clearance from corner in recessed location [12 inches (31 cm) minimum]
T
= maximum depth in recessed location [48 inches (122 cm) minimum]
U
= minimum width for back wall of recessed location [24 inches (61 cm) minimum]
V
= no horizontal clearance between the frames of two terminations that are level.
W
= horizontal clearance between the frames of two terminations that are not level. [36
inches (92 cm) minimum]
†
a vent shall not terminate directly above a sidewalk or paved driveway which is located
between two single family dwellings and serves both dwellings
‡
only permitted if veranda, porch, deck, or balcony has an open side that is equal to or
greater than the depth of the enclosed area
*
as specified in CGA B149 Installation Codes. Note: local Codes or Regulations may require
different clearance.
