Ducting Requirements; Exhaust Length Calculation - Samsung DV665J User Manual

installing your dryer

DUCTING REQUIREMENTS

• Use a 4-inch (10.2 cm) diameter rigid aluminum or rigid galvanized steel duct.
• Do not use a smaller duct.
• Ducts larger than 4 inches (10.2 cm) in diameter can result in increased lint accumulation.
Lint accumulation should be cleaned regularly.
• If a flexible metal duct must be used, use the type with a stiff sheet metal wall. Do not use a flexible duct
with a thin foil wall. Serious blockage can result if the flexible metal duct is bent too sharply.
• Never install any type of flexible duct in walls, ceilings, or other concealed spaces.
• Keep the exhaust duct as straight and short as possible.
• Secure joints with duct tape. Do not use screws.
•
DO NOT EXHAUST DRYER INTO ANY WALL, CEILING, CRAWL SPACE, OR CONCEALED SPACE OF
A BUILDING, GAS VENT, OR ANY OTHER COMMON DUCT OR CHIMNEY.
THIS COULD CREATE A FIRE HAZARD FROM LINT EXPELLED BY THE DRYER.
• Plastic flexible duct can kink, sag, be punctured, reduce airflow, extend drying times, and affect dryer operation.
• Exhaust systems longer than recommended can extend drying times, affect machine operation, and
may collect lint.
• The exhaust duct should end with an exhaust hood with a swing-out damper to prevent back drafts and
entry of wildlife. Never use an exhaust hood with a magnetic damper.
• The hood should have at least 12 inches (30.5 cm) of clearance between the bottom of the hood and
the ground or other obstruction. The hood opening should point down.
• Never install a screen over the exhaust outlet.
• To avoid lint buildup, do not exhaust the dryer directly into a window well. Do not exhaust under a house or porch.
•
If exhaust ductwork must run through an unheated area, the duct should be insulated and slope slightly
down towards the exhaust hood to reduce condensation and lint buildup.
• Inspect and clean the interior of the exhaust system at least once a year. Unplug the power cord before cleaning.
•
Check frequently to be sure the exhaust hood damper opens and closes freely.
• Check once per month, and clean at least one time per year. Note: If clothes are not getting dry, then
check ducting for obstructions.

EXHAUST LENGTH CALCULATION

Table 1: RECOMMENDED MAXIMUM LENGTH
No. of 90° elbows
0
1
2
3
* Do not use non-metallic flexible duct.
8_ Installing your dryer
Recommended
 4" (10 .16 cm)
Rigid Metallic Flexible*
14 m (46 ft.) 9 m (30 ft.)
11 m (38 ft.) 7.5 m (25 ft.)
9 m (31 ft.) 6 m (20 ft.)
7 m (24 ft.) 5 m (16 ft.)
ELECTRIC DRYERS
Weather Hood Type
Use only for short run installations
Rigid
11 m (37 ft.)
9 m (30 ft.)
6.5 m (22 ft.)
4.5 m (15 ft.)
 21/2" (6.35 cm)
Metallic Flexible*
7 m (24 ft.)
6 m (20 ft.)
4 m (14 ft.)
3 m (10 ft.)