Allied Air A96US2V Installation Instructions Manual page 22

TYPICAL EXHAUST PIPE CONNECTIONS IN HORIZONTAL DIRECT OR
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TYPICAL EXHAUST PIPE CONNECTIONS IN UPFLOW DIRECT OR
NON-DIRECT VENT APPLICATIONS
* 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.
NON-DIRECT VENT APPLICATIONS
(RIGHT HAND DISCHARGE SHOWN)
* 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 23
Figure 24
Issue 1621 507404-04