21
CAUTION
IF EXTERIOR WALLS ARE FINISHED WITH VINYL
SIDING, IT IS NECESSARY TO INSTALL THE
VINYL PROTECTOR KIT (VPK-DV) TO THE TOP OF
THE EXTERIOR FIRESTOP (FOR ALL ROUND
TERMINATION CAPS).
V
=VENT TERMINAL
X
=AIR SUPPLY INLET
1234
1234
1234
1234
1234
=AREA WHERE TERMINAL IS NOT PERMITTED
A
= 12"
clearances above grade, veranda, porch, deck or balcony
B
= 12"
clearances to window or door that may be opened
C
= 9" (U.S.A.)
clearance to permanently closed window
12" (Canada)
*D
= 18"
vertical clearance to ventilated soffit located above the
terminal within a horizontal distance of 2 feet (60 cm)
from the center-line of the terminal
*E
= 18"
clearance to unventilated soffit
F
= 9"
clearance to outside corner
G
= 6"
clearance to inside corner
H
= 3 ft. (Canada)
not to be installed above a gas meter/regulator assembly
within 3 feet (90 cm) horizontally from the center-line of
the regulator
I
= 3 ft. (U.S.A.)
clearance to service regulator vent outlet
6 ft. (Canada)
J
= 9" (U.S.A.)
clearance to non-mechanical air supply inlet to building
12" (Canada)
or the combustion air inlet to any other appliance
K
= 3 ft. (U.S.A.)
clearance to a mechanical air supply inlet
6 ft. (Canada)
**L
= 7 ft.
clearance above paved sidewalk or a paved driveway
located on public property
***M = 18"
clearance under veranda, porch, deck or balcony
* 30” minimum for vinyl clad soffits.
** 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 is fully open on a minimum of
2 sides beneath the floor.
NOTE: Local Codes or Regulations may require different clearances.
Figure 20. Vent Termination Minimum Clearances
