Initial Installation
QUALIFIED INSTALLERS ONLY
Round Support |
Box/Wall Thimble |
Horizontal |
Termination |
Pipelength |
90° Elbow |
Pipelength |
Figure 13: Common Horizontal Installation.
36" (915 mm) |
Snorkel |
Round Support |
Box/Wall Thimble |
2 ft (610 mm) |
Pipelength |
45° Elbow |
Figure 15: Common Snorkel Installation.
Your total vent pipe length must be within the shaded area of Figure 12. If a 90° elbow is used in the horizontal plane, 36” (91.4 cm) must be subtracted from the allowable horizontal run.
There are three (3) basic types of Direct Vent System installations. The three (3) types of installations are shown in Figures 13 through 15.
Vertical
Termination
Storm Collar
Flashing
Ceiling Firestop
Round Support
Box/Wall Thimble
Cathedral Ceiling
Support Box
Pipelength
Pipelength
Figure 14: Common Vertical Installation.
16