Special Vent Installations; Periscope Termination; Corner Termination - Napoleon Ascent 42 B42NTR Installation And Operation Manual

2.2

special vent installations

2.2.1 periscope termination

Use the periscope kit to locate the air termination above grade. The periscope must be installed so that when
fi nal grading is completed, the bottom air slot is located a minimum 12" (305mm) above grade. The maximum
allowable vent length (including both rise and run) is 10' (3m) for a fi replace and 8' (2m) for a stove. An insulation
sleeve is illustrated in the top vent image below, use only when supplied with the appliance.
(The insulation sleeve is not required with a stove appliance)
30" (76.2cm)
minimum

2.2.2 corner termination

The maximum vent length for a corner installation is 20" (50.8cm) of horizontal run, in addition to the 45°
offset. Using rigid venting, a 0" rise is acceptable. Using fl exible venting, a 6"(152mm) rise is required. See
illustrations below.
FLEXIBLE VENTING
12" (30.5cm)
minimum
to grade
30" (76.2cm)
6" (152mm)
RISE MINIMUM
venting requirements
minimum
34 5/8"
(87.9cm)
20" (50.8cm)
MAXIMUM
RIGID VENTING
EN
12" (30.5cm)
minimum
to grade
13
W415-1293 / J / 03.11.19