Installation
How to calculate the effective duct length
The overall duct length will determine the duct diameter (see the "Additional duct lengths" table). In Canada the exhaust duct must be 4" (102 mm) in diameter.
Measure the actual duct length needed to go from the dryer’s exhaust connection to the vent outlet:
1.Establish the number of elbows or bends necessary, noting the type of bend, angle and radius involved (see the "Additional duct lengths" table).
2.Add the additional duct length (as derived by using the values specified in the "Additional duct lengths" table) and the actual duct length to get the effective length.
Note:
Maximum effective duct lengths:
4" (100 mm) diameter | 66 ft (20 m) |
5" (125 mm) diameter | 132 ft (40 m) |
6" (150 mm) diameter | 328 ft (100 m) |
If using flexible metal duct the total length must not exceed 7' 10" (2.4 m).
See the "Additional duct lengths" table for more information on maximum duct lengths and number of bends.
Using the ring adapter up to an effective duct length of 33 ft (10 m) and a standard duct diameter of 4"
(100 mm) will provide optimal drying times and energy consumption.
Do not use the ring adapter if the effective duct length is more than 33 ft (10 m).
Effective duct lengths over 66 ft (20 m) require a larger duct diameter.
Longer ducts may lead to slight decreases in dryer efficiency if the necessary duct diameter is not employed.
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