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W415-0221 / E / 04.09.02
PERISCOPE TERMINATION
Use the GD401 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 of 12 inches above grade. The maximum allow-
able vent length depends on the fireplace, as illustrated.
TYPICAL VENT INSTALLATIONS
FIGURES 3
For optimum performance, it is recommended
that all horizontal runs have a 1 inch rise per foot.
When terminating vertically, the vertical rise
is a minimum 36 inches and a maximum 40
feet from the centre of the fireplace flue out-
let.
SPECIAL VENT INSTALLATIONS
FIGURE 4