Operating instructions

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EXTERIOR VENT LOCATIONS AND RESTRICTIONS
ALL MEASUREMENTS FROM CENTER-LINE OF VENT CAP
† A vent shall not terminate directly above a sidewalk or paved driveway, which is located between two single-family dwell-
ings and serves both dwellings.
‡ Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* As specified in CGA B1:19 Installation Codes (1991). Note: Local codes or regulations may require different clearances.
Clearances are in accordance with local installation codes and the requirements of the gas supplier. Dégagement
conforme aux codes d’installation locaux et aux exigences du foumisseunde gaz.
∨ -
Vent Terminal
∧ -
Air Supply Inlet
≡ -
Area where terminal is not permitted
A =
Clearance above grade, veranda, porch, deck, or balco-
ny (*12 inches (30 cm) minimum). Vinyl surfaces re-
quire 24” min.
H =
*Not to be installed above a meter/regulator assembly
within 3 feet (90 cm) horizontally from the center-line of
the regulator
B =
Clearance to window or door that may be opened
(*12 inches (30 cm) minimum.
I = *Clearance to service regulator vent outlet *3 feet (92 cm)
minimum.
C = *Clearance to permanently closed window (minimum
12 inches (30 cm) recommended to prevent condensa-
tion on window)
J =
*Clearance to non-mechanical air supply inlet to building
or the combustion air inlet to any other appliance.
12 inches (30 cm) minimum.
D = *Vertical clearance to ventilated soffit located above
the terminal from the center-line of the terminal 24” (60
cm) min.
K = *Clearance to a mechanical air supply inlet 6 feet (1.8 m)
minimum
E = *Clearance to unventilated soffit 24” min (60 cm) min. L =
† Clearance above paved side-walk or a paved driveway
located on public property (*7 feet (2.1 m) minimum)
F = Clearance to outside corner - 7 inches (18 cm). M = Clearance under veranda, porch, deck, or balcony (*12
inches (30 cm) minimum ‡)
G =
Clearance to inside corner - 12 inches (30 cm). Vinyl
surfaces require 24” min (60 cm).
N= Minimum 24” horizontal clearance to any surface, such as
an exterior surface, for vertical terminations.