Napoleon Fireplaces BGD36PTR - Manual (Page 7)

7
W415-0210 / E / 06.25.03
Use the GD201 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 model of fireplace, as
illustrated.
FIGURES 3a-d
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 mini-
mum 36 inches and a maximum 40 feet from the centre
of the fireplace flue outlet.
* When using rigid venting, this minimum vertical length
may be reduced to 8½".
REAR EXIT INSTALLATION
TOP EXIT INSTALLATION
FIGURES 4
MODELS GD36: The maximum vent length for a corner
installation is 24 inches, where only 6 inches of vertical
rise is used. All corner installations require a minimum 6
inch rise. See FIGURE 5A.
MODELS BGD36: The maximum vent length for a corner
installation is 20 inches of horizontal run, in addition to the
45° offset. In this case zero rise is acceptable when using
rigid. Flexible venting must maintain a 6" rise. See FIG-
URE 5B.
FIGURE 5B - BGD36 ONLY
REAR EXIT TOP EXIT
*
FIGURE 5A - GD36 ONLY
20" MAX
TYPICAL VENT INSTALLATIONS
SPECIAL VENT INSTALLATIONS
PERISCOPE TERMINATION CORNER TERMINATION