508034-02
Issue 2135
Page 23 of 49
* When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible.
TRANSITION
2”
2”
2”
3”
2”
2”
or
DO NOT transition
from smaller to larger
pipe in horizontal runs
of
exhaust pipe
.
EXHAUST
*2”
INTAKE
TRANSITION
3”
*2”
EXHAUST
INTAKE
2”
Appliance
Adaptor
Appliance
Adaptor
Figure 23.
Typical Exhaust and Intake Pipe Connections in Upflow Direct Vent Applications
* When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible.
SIDE VIEW
2”
2”
2”
2”
or
2”
45°
MAX
45°
MAX
DO NOT transition
from smaller to larger
pipe in horizontal runs
of
exhaust pipe
.
EXHAUST
12” max.
INTAKE
3”
*2”
*2”
2”
2”
2”
2”
Appliance
Adaptor
Appliance
Adaptor
EXHAUST
INTAKE
Figure 24. Typical Exhaust and Intake Pipe Connections in Horizontal Direct Vent Applications
(Right Hand Discharge Shown)