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VENT TERMINAL LOCATIONS
Figure 11
V Vent Termination
A Air Supply Inlet
NOTE: All clearances are measured from the center of the termination (except item F).
A = clearances above grade, veranda, porch, deck, or balcony * 17-1/2" (445 mm) minimum
B = clearance to window or door that may be opened *17-1/2" (445 mm) minimum
C = clearance to permanently closed window *minimum 17-1/2" (445 mm) recommended to prevent
condensation on window
D = vertical clearance to ventilated soffit located above the terminal, within a horizontal distance of 24" (610
mm) from the centre-line of the terminal, 23-1/2" (597 mm) minimum
E = clearance to unventilated soffit 23-1/2" (597 mm) minimum
F = clearance to outside corner = 0" (0mm)
G = clearance to inside corner from centre of termination = 10-1/2" (267mm)
H = clearance to each side of center line above meter, in Canada 36" (914 mm) within a height 15' (4500
mm) above the meter assembly, for * U.S. follow ANSI Z223.1
I = clearance to service regulator vent outlet, for Canada 36" (914 mm) minimum, for * U.S. follow ANSI
Z223.1
J = clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other
appliance *17-1/2" (445 mm) minimum
K = clearance to a mechanical air supply inlet, for Canada 77-1/2" (1969 mm) minimum , for * U.S. follow
ANSI Z223.1
L = clearance above paved side-walk or a paved driveway located on public property 89-1/2" (2273 mm)
minimum
M = clearance under veranda, porch, deck, or balcony * 17-1/2" (445 mm) minimum
a vent shall not terminate directly above a side-walk or paved driveway which is located between two single family dwellings and
serves both dwellings*
only permitted if veranda, porch, deck, or balcony is fully open on a minimum of 2 sides beneath the floor*
* as specified in CGA B149 Installation Code (1991) NOTE: local codes or regulations may specify different clearances
* follow ANSI Z223.1 for U.S.A.
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