Lennox ML193UH045P36B Unit Information page 24

TYPICAL EXHAUST PIPE CONNECTIONS IN UPFLOW DIRECT OR
NON-DIRECT VENT APPLICATIONS
Pipe size determined in table 14
2"
3"
2"
2"
2"
2"
TRANSITION
or or
EXHAUST
*2"
DO NOT transition
from smaller to larger
pipe in horizontal runs
of exhaust pipe.
* 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 22
TYPICAL EXHAUST PIPE CONNECTIONS IN HORIZONTAL DIRECT OR
NON-DIRECT VENT APPLICATIONS
(RIGHT HAND DISCHARGE SHOWN)
12" max.
45° 45°
MAX MAX
3"
2"
TRANSITION
2"
or
*2"
2"
2"
2"
*2"
SIDE VIEW
EXHAUST
DO NOT transition
from smaller to larger
pipe in horizontal runs
of exhaust pipe.
* 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
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