Vent Termination Clearances - Giant Factories ANSI Z21.10.3 Owner's Manual

Direct vent tankless water heaters
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INSTALLATION INSTRUCTIONS

Vent Termination Clearances

You must install a vent termination to bring in combustion air and expel exhaust.
Figure 1
TERMINATION
Clearance in
Ref. A also
applies to
anticipated
snow line
SNOW
D
E
B
L
The Vent Termination must have a:
A) Clearance above grade, veranda, porch, deck, or balcony
B) Clearance to window or door that may be opened
TERMINAISON
TERMINATION
C) Clearance to permanently closed window
D) Vertical clearance to ventilated soffit, located above the terminal within
a horizontal distance of two (2) feet (61 cm) from the center line of the
Le dégagement
dans la référence
terminal
A s'applique
également à la
E) Clearance to unventilated soffit
hauteur de neige
F) Clearance to outside corner
prévue
G) Clearance to inside corner
NEIGE
SNOW
H) Clearance to each side of center line extended above meter/regulator
assembly
D
E
I) Clearance to service regulator vent outlet
J) Clearance to non-mechanical air supply inlet to building or the combustion
air inlet to any other appliance
B
K) Clearance to a mechanical air supply inlet
L
L) Clearance above paved sidewalk or paved driveway located on public
property
M) Clearance under veranda, porch, deck, or balcony
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.
* For clearances not specified in ANSI Z223.1/NFPA 54, clearances are in accordance with local installation codes and the requirements of the gas supplier. Clearance to opposite wall is twenty-four
(24) inches (61 cm).
INSIDE
CORNER DETAIL
G
A
B
OPERABLE
B
C
FIXED
B
CLOSED
A
OPERABLE
F
B
1
INSIDE
DÉTAIL D'UN
CORNER DETAIL
COIN INTÉRIEUR
G
A
B
ACTIONNABLE
OPERABLE
B
C
FERMETURE
FIXED
B
PERMANENTE
CLOSED
A
ACTIONNABLE
OPERABLE
F
B
6
H
I
M
B
FIXED
K
CLOSED
J
X
AIR SUPPLY INLET
V
VENT TERMINAL
AREA WHERE TERMINAL
IS NOT PERMITTTED
Canadian Installations
12 inches (30 cm)
36 inches (91 cm)
*
*
H
*
*
*
3 feet (91 cm) within a
height of 15 feet (4.5 m)
I
M
B
above the meter/ regulator
FERMETURE
FIXED
K
PERMANENTE
CLOSED
-
assembly
36 inches (91 cm)
J
X
36 inches (91 cm)
ENTRÉE D'AIR
V
TERMINAISON D'ÉVENT
6 feet (1.83 m)
ZONE OÙ IL NE PEUT Y AVOIR
DE TERMINAISON
7 feet (2.13 m)
1
12 inches (30 cm)
*
U.S. Installations
12 inches (30 cm)
12 inches (30 cm)
*
*
*
*
*
*
*
12 inches (30 cm)
3 feet (91 cm) above
if within 10 feet (3 m)
*
*

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