Venting Installation Instructions

5
Recommended vent/air intake terminal position
A Clearance above grade, veranda, porch, deck, or balcony 1 foot 1 foot (0,30 m)
B Clearance to window or door that may be opened 1 foot 3 feet (0,91 m)
C Clearance to permanently closed window * *
D Vertical clearance to ventilated soffit, eaves or overhang
**
E Clearance to unventilated soffit, eaves, or overhang * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H
Clearance to each side of center line extended above
meter/regulator assembly
*
3 feet (0,91 m) within a
height 15 feet (4,57 m)
above the meter/regulator
assembly
I Clearance to service regulator vent outlet *
J
Clearance to nonmechanical air supply inlet to building or the
combustion air inlet to any other appliance
1 foot
K Clearance to a forced air inlet into a building
3 feet above if
within 10 feet
horizontally
L
Clearance above paved sidewalk or paved driveway located on
public property
*
M
Clearance under deck, veranda, porch, or balcony (open on 3
sides)
* For clearances not specified in ANSI Z223.1 / NFPA 54 or CGA-B149, please use clearances in accordance with
local installation codes and the re
q
uirements of the
g
as su
pp
lier.
REF DESCRIPTION
U.S.
Installations
Canadian
Installations
*
OPERABLE
O
PE
R
A
B
LE
FIXED
C
LO
S
ED
FIXE
D
C
LO
S
ED
DETAIL
INSIDE CORNER
VE TERM PERMITTE
V
V
V
V
V
V
V
V
X
X
V
V
VENT TERMINAL PERMITTED AREA WHERE TERMINAL IS NOT PERMITTED AIR SUPPLY INLET
B
B
B
A
J
B
I
M
C
F
B
B
E
D
L
G
A
H
K
Maintain 12” of clearance above the highest anticipated snow level or grade or whichever is greater.
Please refer to your local codes for the snow level in your area.
CAUTION
1 foot (0,30 m)
3 feet (0,91 m)
3 feet (0,91 m)
6 feet (1,83 m)
7 feet (2,13 m)
Terminals should be so positioned as to avoid products of combustion
entering openings into buildings or other flues or vents