16
139435_A GZ
455
DV 8/28/12
Figure 5.5. Vertical or Horizontal Vent Termination Diagram.
Locking
Screw
Adjustment
Screw
-
= Less Restriction
+
= More Restriction
Figure 5.6. Exhaust restrictor adjustment.
HORIZONTAL RUN
V
E
R
T
IC
A
L
R
U
N
INTAKE
RESTRICTION
INSTALLED
NOT
APPROVED
NO RESTRICTION
ZONE
A
ZONE
B
ZONE
C
EXHAUST = 1/2 to NO
RESTRICTION
INTAKE RESTRICTION
INSTALLED
EXHAUST =
1/2 TO FULL
RESTRICTION
ZONE
D
ZONE
C
ZONE
D
NO RESTRICTION
5/8 VENT REQUIRED
NOT APPROVED
Figure 5.7 Remove Intake Restrictor plate
for terminations in Zones A and B.
Air Intake Restrictor
