8
Installation (continued)
4
20 – 24 in. joist installation
5
Duct connection
□ Use long wood screws (BB) to loosely attach the
main body of the fan to one ceiling joist.
□ Extend the hanger bars to the opposite ceiling joist.
□ Secure the suspension brackets (C, D, and E) to
the joist using long wood screws (BB).
□ Ensure the main body is level and square to the
joists.
□ Tighten all screws.
CAUTION:
Do not mount the fan flush against the joist. The
flange should be flush with the ceiling board.
□ Install a circular duct (Q) to the outlet and secure it
with duct tape or clamps to the outlet.
□ Install the duct with a gradient of 1˚ ~ 2˚ to the
outside.
