INSTALLATION INSTRUCTIONS
Calculate the effective duct length
The overall duct length will determine the duct diameter.
^Measure the actual duct length needed:
1.Establish the number of elbows or bends necessary, noting the type of bend, angle and radius involved (see, Table 1).
2.Add the additional duct length as specified in Table 1 to the actual duct length to get the effective duct length.
3.The necessary duct diameter can then be found in Table 2.
Note:
Drying times and energy consumption remain unaltered for 4" (100 mm) duct up to a total length of 66 ft. (20 m).
Longer ducts may lead to slight increases, but, the function will not be impaired as long as the necessary duct diameter is used (Table 2).
Table 1
Type | Angle | Radius | Additional | ||||
of bend |
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| duct length | ||
|
| inch |
| cm | inch |
| cm |
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Flexible | 90 ° | up to |
| 40.6 | 20" |
| 50.8 |
metal duct |
| 16" |
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|
| 45 ° | up to |
| 40.6 | 12" |
| 30.5 |
|
| 16" |
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|
Smooth | 90 ° | 4" |
| 10 | 14" |
| 35.6 |
metal duct |
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Elbow 90° | 90 ° |
|
|
| 90" |
| 228.5 |
sharp; |
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no radius |
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Concertina | 90 ° | 8" |
| 20.3 | 28" |
| 71.1 |
bend |
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Wall vent kit |
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| 142" |
| 360.7 |
with louvres |
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or |
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window |
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vent kit |
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Wall vent kit |
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| 99" |
| 251.5 |
with flap or |
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window |
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vent kit |
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Exhaust |
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| 193" |
| 490.2 |
connection |
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left side |
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Table 2
Internal diameter or |
| Effective duct | ||
edge length |
| length | ||
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|
inches | mm |
| ft | m |
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|
4" | 100 | 0 | - 66 | 0 - 20 |
5" | 125 | 66 | - 100 | 20 - 30 |
6" | 150 | 100 - 140 | 30 - 42.7 | |
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