7
TYPICAL VENT INSTALLATIONS
REAR EXIT | TOP EXIT |
| FIGURES |
*
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 outlet.
*When using rigid venting, this minimum vertical length may be reduced to 8½".
SPECIAL VENT INSTALLATIONS
PERISCOPE TERMINATION | CORNER TERMINATION |
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 allowable vent length depends on the model of fireplace, as illustrated.
FIGURES 4MODELS 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 FIGURE 5B.
20" MAX
TOP EXIT INSTALLATION
FIGURE 5B - BGD36 ONLYREAR EXIT INSTALLATION