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DV 42 Indoor Gas Fireplace
Appendix
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.
