American Standard CUX1B040A9241A Installation, Operation And Maintenance Manual page 16

Installation Instructions
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.
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Page 16
Non-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)
POSSIBLE CONFIGURATIONS FOR TWO PIPE VENTING SYSTEMS
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) ‡
ELBOW AND TEE MUST
BE AS CLOSE TO-
GETHER
AS POSSIBLE
US Installations
12 inches (30 cm)
4 feet (1.2m) below or to the side of opening; 1 foot (0.3m)
above opening.
*
*
*
*
*
*
*
4 feet (1.2 m) below or to side of opening; 1 foot (300 m) above
opening
3 feet (91 cm) above if within 10 feet (3m) horizontally
7 feet (2.13 m)
*
Pub. No. 41-5016-12