minimum venting requirements
EN
3.1
typical venting installation
30"
(76.2cm)
minimum
base of
air collar
(NG only)
SINGLE-SIDED
LVX38
D
40" (101.6cm)
special vent installation (periscope termination)
Use the periscope kit to locate the air termination above grade. The periscope must be installed so that when
final grading is completed, the bottom air slot is located a minimum 12" (30.5cm) above grade. The maximum
allowable vent length is 10' (3m).
30"
(76.2cm) min.
base of air collar
SINGLE-SIDED
LVX38
D
40" (101.6cm)
16
W415-1710 / B / 08.17.18
18"
(45.7cm)
maximum
LVX38 & LVX50: 30" (76.2cm) min
LVX62 & LVX74: 48" (121.9cm) min
62 3/4"
air collar
(159.4cm)
minimum plus rise
LVX50
46 1/2" (118.1cm)
12"
(30.5cm)
minimum
to grade
LVX38 & LVX50: 30" (76.2cm) min
base of air collar
LVX50
46 1/2" (118.1cm)
base of
LVX62
52 1/2" (133.4cm)
SEE-THRU
LVX62
N/A
D
LVX38 & LVX50: 62 3/4" (76.2cm)
min plus rise
LVX62 & LVX74: 80 3/4" (205.1cm)
min plus rise
SEE-THRU
LVX74
58 1/2" (148.6cm)
D
LVX74
N/A
12"
(30.5cm)
minimum
to grade