American Standard VAPORSHIELD Residential 30 Operating, Installation And Service Manual page 9

FIGURE 2B
Other than direct vent terminal clearances
(See Clause 4.33.2)
D
NOTE: If local adopted installation codes specify clearances different than those illustrated, then the
most stringent clearance shallprevail.
TERMINAL CLEARANCES (USES ROOM AIR COMBUSTION)
A
Clearance above grade, veranda,
porch, deck, or balcony
B
Clearance to window or door
that may be opened
C
Clearance to permanently
closed window
Vertical clearance to
ventilated soffit located
D
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
Clearance to each side of
H
center line extended
above meter/regulator
assembly
corner detail
A
E
B
L
C
Fixed
closed
Operable
F
B
Legend:
V
= Vent terminal
x
= Air supply Inlet
= Area where terminal is not permitted
12 in (30 cm)
4 ft (1.2 m) below
or to side of
opening; I ft (300
mm) above opening
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
inside
G
H
15 ft
B
B
Fixed
closed
Operable
M
B
x
J
B
J
A
Regulator vent outlet
In the event no
regulator is present,
H and I can be
disregarded.
I
Clearance to regulator
vent outlet
Clearance to a non-mechanical
J
air supply inlet into building or
combustion air inlet
to any other appliance
K
Clearance to a mechanical air
supply inlet
Above paved sidewalk or paved
L
driveway
located on public property
M
Clearance under veranda, porch,
deck, or balcony
x
K
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.†
†
4