INSULATION*
(Place around and
over Fan Housing.)
Seal gaps
around
housing.
ROUND
DUCT*
POWER
CABLE*
Seal duct
joints with
tape.
FAN
HOUSING
ROUND
ELBOWS*
ROOF CAP*
(with built-in
damper)
Keep duct
runs short.
WALL CAP*
(with built-in
damper)
*Purchase
separately.
OR
Connecting the Duct
● Install a circular duct to outlet and secure it with duct tape or clamps.
● Install the duct (G) to the outlet with a gradient 1°~2° to the outside as shown.
● The ducting from this fan to the outside of the building has a strong effect on the
● air flow, noise and energy use of the fan. Use the shortest, straightest duct
● routing possible for best performance, and avoid installing the fan with smaller
● ducts than recommended. Insulation around the ducts can reduce energy loss
● and inhibit mold growth. Fans installed with existing ducts may not achieve their
● rated airflow.
● 10.16 cm (4 in) round is recommended for best performance.
● Ensure duct joints and exterior penetrations are sealed with caulk or other
● similar material to create an air-tight path, to minimize building heat loss and
● gain, and to reduce the potential for condensation.
● Place/wrap insulation around duct and/or fan in order to minimize possible
● condensation buildup within the duct, building heat loss and gain.
5
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