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VB Series Outdoor LS Manual 27
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Description
Canadian Installations US Installations
A
Clearance above grade, veranda, porch,
deck, or balcony
12 inches (30 cm) 12 inches (30 cm)
B
Clearance to window or door that may be
opened
36 inches (91 cm) 12 inches (30 cm)
C Clearance to permanently closed window * *
D
Vertical clearance to ventilated soffit,
located above the terminal within a
horizontal distance of 2 feet (61 cm) from
the center line of the terminal
* *
E Clearance to unventilated soffit * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H
Clearance to each side of center line
extended above meter/regulator assembly
3 feet (91 cm) within a
height 15 feet (4.5 m)
above the meter/
regulator assembly
*
I Clearance to service regulator vent outlet 36 inches (91 cm) *
J
Clearance to nonmechanical air supply
inlet to building or the combustion air inlet
to any other appliance
36 inches (91 cm) 12 inches (30 cm)
K
Clearance to a mechanical air supply inlet
6 feet (1.83 m)
3 feet (91 cm) above if
within 10 feet (3 m)
horizontally
L
Clearance above paved sidewalk or
paved driveway located on public property
7 feet (2.13 m) 1 *
M
Clearance under veranda, porch, deck, or
balcony
12 inches (30 cm) 2 *
Flue Terminal Clearances (ANS Z21.10.3, CSA 4.3)
1 A vent shall not
terminate directly above
a sidewalk or paved
driveway that is located
between two single
family dwellings and
serves both dwellings.
2 Permitted only if
veranda, porch, deck, or
balcony is fully open on
a minimum of two sides
beneath the floor.
∗For clearances not
specified in ANSI
Z223.1/NFPA 54 or CSA
B149.1, clearances are
in accordance with local
installation codes and
the requirements of the
gas supplier.