4
FIGURE 2B
Other than direct vent terminal clearances
(See Clause 4.33.2)
NOTE: If local adopted installation codes specify clearances different than those illustrated, then the
most stringent clearance shallprevail.
D
E
B
C
B
B
B
B
A
J
F
B
G
15 ft
H
M
x
K
A
L
inside
corner detail
x
x
V
Fixed
closed
Fixed
closed
Operable
Regulator vent outlet
In the event no
regulator is present,
H and I can be
disregarded.
Legend:
= Vent terminal
= Air supply Inlet
= Area where terminal is not permitted
J
Operable
TERMINAL CLEARANCES (USES ROOM AIR COMBUSTION)
A
I
J
K
L
M
B
C
D
E
F
G
H
Clearance above grade, veranda,
porch, deck, or balcony
Clearance to regulator
vent outlet
4 ft (1.2 m) below
or to side of opening; I ft
(300 mm) above opening
4 ft. below or to side of
opening, I ft. (300 mm) above
opening
3 ft. (91 cm) above if within
10 ft (3 m) Horizontally
7 ft (2.13 m) for mechanical
draft systems (category
I appliances); vents for
category II and IV appliances
cannot be located above public
walkways or other areas
where condensate or vapon
can cause a nuisance or hazard
12 in.†
Clearance to a mechanical air
supply inlet
Above paved sidewalk or paved
driveway
located on public property
Clearance under veranda, porch,
deck, or balcony
Clearance to a non-mechanical
air supply inlet into building or
combustion air inlet
to any other appliance
12 in (30 cm)
0 in
12 in.†
12 in.
24 in.
18 in.
3 ft. (91 cm) within
a height 15 feet
(4.5 m) above the
meter assembly
4 ft (1.2 m) below
or to side of
opening; I ft (300
mm) above opening
Clearance to window or door
that may be opened
Clearance to permanently
closed window
Clearance to unventilated
soffit
Clearance to outside
corner
Clearance to inside
corner
Clearance to each side of
center line extended
above meter/regulator
assembly
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
†
Summary of Contents for VAPORSHIELD Residential 30
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