VENT TERMINAL CLEARANCES
Figure 3
A= Clearance above grade, verandah, porch, deck, or | H= *Not to be installed above a meter/regulator | |
[balcony (*12 inches (30cm) minimum] | assembly within 3 feet (90cm) horizontally from | |
B= Clearance to window or door that may be opened [*12 | the | |
inches (30cm) minimum] | I= Clearance to service regulator vent outlet | |
C= Clearance to permanently closed window | [*6 feet | (1.8m) minimum] |
[minimum 12 inches (30cm) recommended to | J= Clearance to | |
prevent condensation on window] | building or the combustion air inlet to any | |
D= Vertical clearance to ventilated soffit located | other appliance [12 inches (30cm) minimum] | |
above the terminal within a horizontal | K= Clearance to a mechanical air supply inlet | |
distance of 2 feet (60cm) from the | [*6 feet (1.8m) minimum] | |
of the terminal 24 inches ( 60cm) minimum | L= *** Clearance above paved | |
E= Clearance to unventilated soffit | driveway located on public property | |
[18 inches (45cm) minimum] | [*7 feet | (2.1m) minimum] |
F= Clearance to outside corner [12 inches minimum] | M= Clearance under verandah, porch, deck, or | |
G= Clearance to inside corner [`12 inches minimum] | balcony [*24 inches (60cm) 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 verandah, porch, deck, or balcony, is fully open on a minimum of 2 sides beneath the floor
•As specified in CGA B149 Installation Codes (1991) Note: Local Codes or Regulations may require different clearances
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