Lennox EL195DF SERIES User Manual page 23

Pipe size determined in table 10.
2"
* When transitioning up in pipe size, use the shortest length of 2" PVC pipe possible.
Pipe size determined in table 10.
TYPICAL EXHAUST PIPE CONNECTIONS
2"
2"
2"
or
3"
TRANSITION
*2"
DO NOT transition from smaller
to larger pipe size in horizontal
runs of exhaust pipe.
NOTE − Exhaust pipe and intake pipe must be the same diameter.
FIGURE 20
TYPICAL INTAKE PIPE CONNECTIONS
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 21
Page 23
2"
2"
2"
2"
or
TRANSITION
*2"
3"
*2"
INTAKE
EXHAUST
TOP VIEW
INTAKE
EXHAUST
TOP VIEW