Napoleon L38N Installation Manual page 17

4/7" vent clearance to combustibles
If necessary, 5/8" venting can be reduced to 4/7" venting.
The minimum clearances around the horizontal vent pipe to the combustible material is 1" (25.4mm) in
installations with a minimum of 30" (76.2cm) vertical rise made immediately off the appliance collar and where
the vent has been reduced to a 4/7" from 5/8" at the appliance.
SINGLE-SIDED
reducer
SEE-THRU
D
30" min
(76.2cm)
base of air collar
(76.2cm)
reducer
L38
D 40" (101.6cm)
minimum venting requirements
62 3/4"
(156.4cm)
D
30" min
base of air collar
L50
46 1/2" (118.1cm)
62 3/4"
(156.4cm)
W415-1707 / 07.04.17
EN
17