Lennox EL195UHNE Series Manual page 24

TYPICAL EXHAUST AND INTAKE PIPE CONNECTIONS IN UPFLOW DIRECT OR
EXHAUST
Appliance
Adaptor
2"
2"
INTAKE
* When transitioning up in pipe size, use the shortest length of 2" PVC pipe possible.
TYPICAL EXHAUST AND INTAKE PIPE CONNECTIONS IN HORIZONTAL DIRECT OR NON-DIRECT VENT
EXHAUST
* When transitioning up in pipe size, use the shortest length of 2" PVC pipe possible.
NON-DIRECT VENT APPLICATIONS
EXHAUST INTAKE
3"
TRANSITION
Appliance
Adaptor
*2"
FIGURE 23
APPLICATIONS
(RIGHT HAND DISCHARGE SHOWN)
12" max.
2"
or
2"
2"
2"
Appliance
Adaptor
2"
INTAKE
2"
DO NOT transition
from smaller to larger
pipe in horizontal runs
of exhaust pipe.
FIGURE 24
2"
DO NOT transition
from smaller to larger
3" pipe in horizontal runs
*2"
of exhaust pipe.
TRANSITION
2"
45° 45°
MAX MAX
SIDE VIEW
Page 24
2"
2"
2"
or
3"
*2"
EXHAUST
*2"
Appliance
Adaptor
INTAKE
2"
2"