Lennox Allied Air Enterprise A97DSMV Installation Instructions Manual page 17

507029-05
2"
2"
2"
3"
TRANSITION
*2"
* When transitioning up in pipe size, use the shortest length of 2" PVC pipe possible.
NOTE − Exhaust pipe and intake pipe must be the same diameter.
Figure 19. Typical Exhaust Pipe Connections
2"
2"
2"
3"
TRANSITION
*2"
* When transitioning up in pipe size, use the shortest length of 2" PVC pipe possible.
NOTE − Intake pipe and exhaust pipe must be the same diameter.
Figure 20. Typical Air Intake Pipe Connections
DO NOT transition
from smaller to larger
pipe size in horizontal
runs of exhaust pipe.
NOTE: 1-1/2" Vent
Pipe Diameter Allowed
Only on 070 Units
1-1/2"
or
TRANSITION
*2"
TRANSITION
*2"
3"
*2"
NOTE: 1-1/2" Vent
Pipe Diameter Allowed
Only on 070 Units
1-1/2"
or
TRANSITION
*2"
Issue 2241
Exhaust
Air Intake
TOP VIEW
Exhaust
Air Intake
TOP VIEW
Page 17 of 73