Napoleon Fireplaces BGD38PT - Manual (Page 7)

7
W415-0244 / A / 05.15.03
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.
FIGURES 3 For optimum performance, it is recommended
that all horizontal runs have a 1 inch rise per foot.
When termina When termina When termina When termina When terminating v ting v ting v ting v ting ver er er er ertically tically tically tically tically, the v , the v , the v , the v , the ver er er er ertical rise is a tical rise is a tical rise is a tical rise is a tical rise is a
minimum 36 inches and a maximum 40 feet from minimum 36 inches and a maximum 40 feet from minimum 36 inches and a maximum 40 feet from minimum 36 inches and a maximum 40 feet from minimum 36 inches and a maximum 40 feet from
the centre of the fireplace flue outlet.
the centre of the fireplace flue outlet. the centre of the fireplace flue outlet. the centre of the fireplace flue outlet. the centre of the fireplace flue outlet.
FIGURE 4
TYPICAL VENT INSTALLATIONS
SPECIAL VENT INSTALLATIONS
PERISCOPE TERMINATION