Special provisions for mobile home installations
The exhaust vent must be securely fastened to a noncombustible portion of the mobile home structure. Do not use screws or other fastening devices that extend into the interior of the vent to secure vent.
Terminate the exhaust vent outside. The exhaust vent must not terminate beneath the mobile home and must not be connected to any other duct, vent, or chimney.
3.Determine the number of elbows you will need.
IMPORTANT: Do not use vent runs longer than specified in the Vent Length Chart
In the column listing the type of metal vent you are using (rigid metal or flexible metal), find the maximum length of metal vent on the same line as the number of elbows.
Number of | Type of | Box or | Angled |
90º turns | vent | louvered | hoods |
or elbows |
| hoods |
|
|
|
|
|
0 | Rigid metal | 36 ft (11 m) | 26 ft (7.9 m) |
| Flexible metal | 28 ft (8.5 m) | 22 ft (6.7 m) |
|
|
|
|
1 | Rigid metal | 26 ft (7.9 m) | 16 ft (4.9 m) |
| Flexible metal | 18 ft (5.5 m) | 12 ft (3.7 m) |
|
|
|
|
2 | Rigid metal | 16 ft (4.9 m) | 6 ft (1.8 m) |
| Flexible metal | 8 ft (2.8 m) | 2 ft (0.6 m) |
Determine Vent length
1.Select the route that will provide the staightest and most direct path outdoors. Plan the installation to use the fewest number of elbows and turns. When using elbows or making turns, allow as much room as possible. Bend vent gradually to avoid kinking. Avoid 90° turns.
2.Determine vent length.
The maximum length of the exhaust system depends upon:
■The type of vent (rigid metal or flexible metal).
■The number of elbows used.
■Type of hood.
Recommended hood styles are shown here.
2
1
4"
(10.2 cm)
4" (10.2 cm)
1.Louvered style
2.Box hood style
The angled hood style (shown following) is acceptable.
4" 
(10.2 cm)
2.5"
(6.4 cm)
See the exhaust vent length chart that matches your hood type for the maximum vent lengths you can use.
Exhaust systems longer than specified will:
■Shorten the life of the dryer.
■Reduce performance, resulting in longer drying times and increased energy usage.
Install Vent System
1.(Optional) Put on safety glasses and gloves.
2.Before installing the vent system, be sure to remove the wire exhaust guard that is located at the exhaust outlet.
3.Install exhaust hood. Use caulking compound to seal exterior wall opening around exhaust hood.
4.Connect vent to exhaust hood. Vent must fit inside exhaust hood. Secure vent to exhaust hood with 4 in. (10.2 cm) clamp.
5.Run vent to dryer location. Use the straightest path possible. See “Determine Vent Length.” Avoid 90º turns. Use duct tape to seal all joints.
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