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506725-01 Page 17 of 48
Issue 1109
FIGURE 21
TYPICAL INTAKE PIPE CONNECTIONS (DIRECT VENT APPLICATIONS)
2”
2”
TRANSITION
2”
3”
TRANSITION
3”
Pipe size determined in Table 7.
2”
2”
or
TOP VIEW
EXHAUST
INTAKE
* 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.
*2”
*2”
*2”
FIGURE 20
TYPICAL EXHAUST PIPE CONNECTIONS
TRANSITION
2”
2”
2”
3”
Pipe size determined in Table 7.
2”
2”
or
DO NOT transition from smaller
to larger pipe size in horizontal
runs of exhaust pipe.
TOP VIEW
EXHAUST
INTAKE
* 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.
*2”