FIGURE 7 – Damper Collar Installation
INSTALLATION – FAN AND DUCT
Attach 4 S-hooks to 4 of the D-hooks on the fan housing. Hang the fan from the attic rafters using 4
lengths of the supplied chain (
Figure 8
). The 4 lengths of chain are used to support the weight of the
fan and to eliminate any swaying motion. Tape down any unused D-hooks to avoid excess rattling.
Slide one end of the flexible duct over the damper box collar and fasten with 4 self tapping sheet
metal screws (
Figure 9
). Seal the joint with the included duct tape to make the seam airtight.
Attach the other end of the flexible duct to the collar on the back of the fan using the remaining sheet
metal screws (
Figure 9
). Finish by wrapping the joint with the provided tape to make the seam airtight.
The duct should be gently bent 90 degrees for maximum sound attenuation and airflow (
Figure 10
).
Avoid sharp bends in the duct or contact with metal fixtures, pipes, or conduits. The duct section
immediately before the fan should be as straight as possible to ensure smooth airflow to the fan.
Once the fan is balanced and secure, close all S-hooks with pliers to ensure stability.
Plug the fan control cord with the white male end into the white connector on the damper box.
Note: The 2.5e fan has a separate power cord that must also be plugged into a 120v outlet
with uninterrupted power once all other installation has been completed.
AirScape 2.5/2.5e WHF Installation Manual 02-11 Page
8
