INSTALLATION INSTRUCTIONS
Flexible metal ducting has been used for the following example. Other duct types may require additional duct length (see Table 1.)
Example:
Vent connection left . . . . . . . 39" (1.0 m) Length (L). . . . . . . . . . . . . . . 47" (1.2 m) Lower radius (R). . . . . . . . . . 19" (0.5 m) Height (H). . . . . . . . . . . . . . . 39" (1.0 m) Upper radius (R) . . . . . . . . . 19" (0.5 m) Wall pipe w/ grill frame . . . . 149" (3.8 m)
Effective duct length . . . . 312" (8.00 m)
Result:
A duct diameter of 4" (100 mm) is adequate since the effective length is less than 66 ft. (20 m) as specified in Table 2.
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