I
NSTALLATION
(C
ONT
.)
P
AGE
17
Acceptable Vent Configurations When Using Two Vertical Elbows
•
The vertical height directly off of the starter section (V
1
in the illustration below) must be a
minimum 3' tall.
Horizontal Run:
Vent Height May Be:
Use The Following:
9" to 8'
3' to 5'
Restrictor #1
9" to 9'
5'-1" to 7'
Restrictor #1
9" to 10'
7'-1" to 9'
Restrictor #1
9" to 11'
9'-1" to 11'
Restrictor #1
8'-1" to 16'
3'-1" to 5'
No restrictor
9'-1" to 16'
5'-1" to 7'
No restrictor
10'-1" to 16'
7'-1" to 9'
No restrictor
11'-1" to 16'
9'-1" to 11'
No restrictor
