American Standard CUX1B040A9241A Installation, Operation And Maintenance Manual page 15

h
D
E E
V
V
B
L
V
VENT TERMINAL
Clearance above grade, veranda, porch, deck, or
A=
balcony
B= Clearance to window or door that may be opened
C= Clearance to permanently closed window
Vertical clearance to ventilated soffit located above the
D= 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 center line extended above
H=
meter/regulator assembly
I= Clearance to service regulator vent outlet
Clearance to nonmechanical air supply inlet to building
J=
or the combustion air inlet to any other appliance
K= Clearance to a mechanical air supply inlet
Clearance above a paved sidewalk or paved driveway
L=
located on public property
M-
Clearance under veranda, porch, deck, or balcony
=
Notes:
1. In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code.
2. In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code.
†. A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwelling and serves both dwellings.
‡. Pemitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's Installation Instructions.
Pub. No. 41-5016-12
C
V
B
V
V
B
F
B
X AIR SUPPLY INLET
Direct Vent Terminal Clearances
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >
100,000 Btuh (30 kw)
3 feet (91 cm) with a height 15 feet (4.5 m) above the
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 12
inches (30 cm) for appliances > 10,000 Btuh (3 kw) and =/<
100,000 Btuh (30 kw), 36 inches (91 cm) for appliances >
100,000 Btuh (30 kw)
INSIDE
CORNER DETAIL
G
V
B
V
X
V
J
B
A
AREA WHERE TERMINAL IS NOT PERMITTED
Canadian Installations
12 inches (30 cm)
*
*
*
*
*
meter/regulator assembly
3 feet (91 cm)
6 feet (1.83m)
7 feet (2.13 m) †
`12 inches (30 cm) ‡
Installation Instructions
H
I
M
US Installations
12 inches (30 cm)
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9
inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances > 50,000
Btuh (15 kw)
*
*
*
*
*
*
*
6 inches (15 cm) for appliances =/< 10,000 Btuh (3 kw), 9
inches (23 cm) for appliances > 10,000 Btuh (3 kw) and =/<
50,000 Btuh (15 kw), 12 inches (30 cm) for appliances > 50,000
Btuh (15 kw)
3 feet (91 cm) above if within 10 feet (3m) horizontally
*
*
X
V
K
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