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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
f i r e - p a r t s . c o m
REAR VENT
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. In
this case 0" rise is acceptable when using rigid venting. When using fl exible venting, it is required to maintain a 6"
(152mm) rise. See illustrations below for more information.
FLEXIBLE VENTING
12" (30.5cm)
minimum
to grade
6" (152mm)
RISE MINIMUM
CB36 Required Rise
Rigid Venting
Rear Vent
Corner
Flexible Venting
venting requirements
30" (76.2cm)
minimum
34 5/8"
(87.9cm)
TOP VENT
20" (50.8cm)
MAXIMUM
RIGID VENTING
0"
6" (152mm)
EN
12" (30.5cm)
minimum
to grade
13
W415-1848 / A / 03.11.19
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