Figure 18. Vent Terminal (Low Ground Clearance)
Maximum Vent Length Determination
Power Vent Maximum Vent Length
| Max Vent Length feet | Max Vent Length feet | |
| (meters) 4 inch (10.2 | ||
Model | (meters) 3 inch (7.6 cm) | ||
PVC, CPVC, or ABS | cm) PVC, CPVC, or | ||
Number | ABS | ||
| |||
EF60T125, EF100T150 | 120 (36.6) | 170 (51.9) | |
EF60T150, EF100T199 | 100 (30.5) | 150 (45.7) | |
EF60T199, EF100T250 | 80 (24.4) | 130 (39.6) | |
EF100T300 | 60 (18.3) | 110 (33.5) | |
EF100T399 | 50 (15.2) | 100 (30.5) |
Table 4
Determining required vent length:
1.Determine the total length of straight vent pipe (in feet) required.
2.Add 5 feet (1.5 m) of venting for every 90° elbow.
3.Add 2 ½ feet (.7 m) of venting for every 45° elbow.
4.Total vent length cannot exceed “Max. Vent Length” in Table 4.
Example of Total Vent Length for EF100T199 with a power vented installation:
A 3 inch (7.6 cm) venting system has a total of six
Total equivalent vent distance = 55 feet (16.5 m) + 30 feet (9 m) = 85 feet (25.5 m) total equivalent vent length. This is below the maximum allowed distance of 100 feet (30 m) for this model using 3 inch (7.6 cm) vent.
NOTICE
Do not include the 3 inch (7.6 cm) condensate elbow or vent terminals in determining maximum vent length.
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