Installation Guide

Connecting the Duct
● Install a circular duct to outlet and secure it with duct tape or clamps.
● Install the duct 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.
● For models RVH50, RVH70, RVH80, RVH90, or RVH110, 4 in (10.16 cm) round
● is recommended for best performance. For models RVH130 or RVH150,
● 6 in (15.24 cm) 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.
6
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