Bradford-White Corp Powered Direct Vent Series instruction manual Vent Connector Lengths

Venting continued-

TABLE 2 - VENT CONNECTOR LENGTHS

FOR 3” (7.6 cm) DIAMETER PVC

Total # of 90° elbows	Maximum # of feet of straight
(Intake + Exhaust)	pipe (Intake + Exhaust)
2	70 (21.3 m)
3	65 (19.8 m)
4	60 (18.3 m)
5	55 (16.8 m)
6	50 (15.2 m)
7	45 (13.7 m)
8	40 (12.2 m)

TABLE 3 - VENT CONNECTOR LENGTHS

FOR 4” (10.1 cm) DIAMETER PVC

Total # of 90° elbows	Maximum # of feet of straight
(Intake + Exhaust)	pipe (Intake + Exhaust)
2	140 (42.7 m)
3	135 (41.1 m)
4	130 (39.6 m)
5	125 (38.1 m)
6	120 (36.6 m)
7	115 (35.1 m)
8	110 (33.5 m)

NOTE: When using 4” (10.1 cm) PVC, use a 4” (10.1 cm) to 3” (7.6 cm) reducer on the intake of the “Tee” as shown in Figure 4. When exiting the building wall, use another 4” (10.1 cm) to 3” (7.6 cm) reducer, and exit the wall with 3” (7.6 cm) PVC. If the length of 3” (7.6 cm) PVC needed to go the through wall is greater then 14” (35.5 cm), use 4” (10.1 cm) PVC to go through the wall and reduce to 3” (7.6 cm) PVC immediately after exiting the outside wall. Terminate the venting with the 3” (7.6 cm) vent terminals supplied, as shown in Figure 7.

Figure 4

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