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USE A MINIMUM OF 100mm (4”) DIAMETER RIGID ALUMINUM OR RIGID GALVANIZED STEEL DUCT.
Do not use smaller duct. Ducts larger than 100mm can result in increased lint build-up. Any lint build-up
should be cleaned regularly. If flexible metal must be used in some areas, use the type with a stiff sheet
metal wall. Do not use flexible duct with a thin foil wall. Serious blockage can result if flexible metal duct is
bent too sharply. Never install any type of flexible duct in wall, ceilings or other concealed spaces.
Keep exhaust duct as straight and short as possible. Exhaust systems longer than recommended (see figure
below) can extend drying times, affect machine operation and may collect lint. Secure joints with proper duct
tape. Do not use screws.
DO NOT EXHAUST DRYER INTO ANY WALL,
CEILING, CRAWL SPACE OR OTHER CONCEALED
SPACE IN A BUILDING, GAS VENT OR CHIMNEY.
THIS COULD CREATE A FIRE HAZARD FROM LINT
EXPELLED BY THE DRYER.
The exhaust duct should end with an exhaust hood with
a swing-out flap to prevent back-draughts and access
for wildlife (see Commercial Installation Accessories).
Never use an exhaust hood with a magnetic flap. The
hood should have at least 300mm (12”) 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.
When possible, do not exhaust the dryer directly into a
basement window well in order to avoid a lint build-up.
Do not exhaust under a building. 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 build-up.
If an existing exhaust system is to be used with your
new dryer, you must ensure:
• The exhaust system meets all local and national regulations.
• That plastic flexible duct is not used.
• To completely inspect and clean all lint accumulation from the duct interior.
• The duct is not kinked or crushed which could restrict airflow.
• The exhaust hood flap opens and closes freely.
9 m
7 m
6 m
5 m
4 m
Exhaust Hood Type
Maximum length of 100mm (4”) diameter
rigid metal duct
Number
of
90° Turns
0
1
2
3
4
30 m
24 m
20 m
15 m
11 m
18 m
15 m
12 m
9 m
7 m
100mm
64mm
Maximum length of 100mm (4”) diameter
flexible stiff walled metal duct
0
1
2
3
4
11 m
10 m
9 m
8 m
7 m
4. EXHAUSTING
Each dryer must be exhausted to the outside air. This is necessary for gas combustion (on gas models),
and will also prevent large amounts of moisture and some lint from being blown into the room.
Plastic or non-metal flexible duct presents a potential fire hazard. NEVER USE PLASTIC
OR NON-METAL FLEXIBLE DUCT. If your existing ductwork is plastic, non-metal or
combustible, replace it with metal. Plastic flexible duct can kink, sag, be punctured, reduce
airflow, extend drying times and affect dryer operation.
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WARNING
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