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10
W415-0748 / 12.12.08
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” above grade. The maximum allowable vent lengths depends on the
appliance, as illustrated.
9.3
2.2 SPECIAL VENT INSTALLATIONS
2.2.1 PERISCOPE TERMINATION
46”
30” MINIMUM
12”
MINIMUM
ABOVE
GRADE
BELOW GRADE INSTALLATION MAXIMUM 10FT VENT
LENGTH USE GD201 PERISCOPE KIT
FIGURE 2.2.1
* FIRST TWO
FEET
REQUIRES
INSULATION
SLEEVE
!
WARNING
The fi rst 2 feet of outer 7 “ diameter vent pipe from the appliance must be wrapped in the 1” thick
insulation sleeve (supplied). Make sure the insulation is pulled down tight to the fi replace when
installed. There after, a 2” clearance all around the vent pipe from combustible materials on all
horizontal vent sections is required.
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