Installation Guide

Page 2
MODELS 678 • 679 • 680 • 679FL • 680FL
INSTALL THE HOUSING
1. Slide adjustable mounting
brackets into channels on
sides of housing.
2. Choose the location for
your fan/light in the ceiling.
For best possible perfor-
mance, use the shortest
possible duct run and a
minimum number of el-
bows.
4. Set housing aside and drive nails partially into joist at the
top of both keyhole marks.
5. Hang housing from nails and pound nails tight. To ensure
a noise-free mount, crimp the bracket channels tightly
around the mounting brackets.
INSTALL THE HOUSING
(continued)
Existing Construction
New Construction
1. Choose the location for your fan/light in the ceiling. For best
possible performance, use the shortest possible duct run
and a minimum number of elbows.
3. Set housing aside
and cut ceiling open-
ing slightly larger
than marked.
New Construction
1-1/4
1
3/4
1/2
1-1/4
1
3/4
1/2
ADJUSTMENT SCREWS
6. To adjust vertical housing position: Loosen adjustment
screws on both sides of housing. Move housing up or down
until adjustment screws line up with mark indicating your
finished ceiling thickness. Tighten screws securely.
3. Position mounting brackets against joist. Mark the keyhole
slot on both mounting brackets.
Position bottom
edge of brackets
slightly above
bottom edge
of joists.
4. Place housing in opening. Position mounting brackets
against joist and nail to joist through keyhole on both sides.
To ensure a noise-free mount, crimp the bracket channels
tightly around the mounting brackets.
2. In attic, position housing
in desired location. Trace
outline of housing on ceiling
material.
Position bottom
edge of brackets
slightly above
bottom edge
of joists.