Lennox ML195UH 045XP24B

Page 30
FIGURE 29
TYPICAL AIR INTAKE
PIPE CONNECTIONS IN UPFLOW DIRECT VENT
APPLICATIONS
*2”
TRANSITION
2”
3”
Pipe size determined in table 14
2”
2”
2”
2”
or
AIR INTAKE
* When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible.
NOTE − Intake and exhaust pipe must be the same diameter.
or
FIGURE 30
TYPICAL AIR INTAKE
PIPE CONNECTIONS IN HORIZONTAL DIRECT VENT APPLICATIONS
(RIGHT HAND DISCHARGE SHOWN)
2”
2”
2”
2”
or
TRANSITION
3”
2”
AIR
INTAKE
* When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible.
NOTE − Intake and exhaust pipe must be the same diameter.
*2”
*2”