NuTone 778WHNT Manuel D'instructions page 2

INSTALL THE HOUSING
New Construction
1. Choose the location for your fan in the ceiling. For best
possible performance, use the shortest possible duct run
and a minimum number of elbows.
2. Slide adjustable mounting brackets into channels on sides
of housing.
3. Position mounting brackets against joist. Mark the keyhole
slot on both mounting brackets.
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.
Position bottom edge
of brackets slightly
above bottom edge of
joists.
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.
Existing 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.
2. In attic, position mounting brackets against joist. Trace
outline of housing on ceiling material.
3. Set housing aside and cut ceiling opening slightly larger
than marked.
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.
MODEL 778WHNT
ADJUSTMENT SCREWS
Page 2