MODELS 770RLTK, 770RLTKC, 770RNLTK
Register this product at www.broan.com/register or www.nutone.com/reg-
ister. For Warranty Statement, or to order Service Parts: go to www.broan.
com and type the Model in the “Model Search” field at the top of the page.
Broan, 926 W. State Street, Hartford, WI 53027 800-558-1711 or
888-336-3948
1
Ventilation Fan with Decorative Light
READ AND SAVE THESE INSTRUCTIONS
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PER-
SONS, OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you
have questions, contact the manufacturer at the address or telephone
number listed in the warranty.
2. Before servicing or cleaning unit, switch power off at service panel
and lock the service disconnecting means to prevent power from be-
ing switched on accidentally. When the service disconnecting means
cannot be locked, securely fasten a prominent warning device, such
as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a qualified
person(s) in accordance with all applicable codes and standards,
including fire-rated construction codes and standards.
4. Sufficient air is needed for proper combustion and exhausting of
gases through the flue (chimney) of fuel burning equipment to prevent
backdrafting. Follow the heating equipment manufacturer’s guideline
and safety standards such as those published by the National Fire
Protection Association (NFPA), and the American Society for Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE), and the local
code authorities.
5. When cutting or drilling into wall or ceiling, do not damage electrical
wiring and other hidden utilities.
6. Ducted fans must always be vented to the outdoors.
7. Do not install in a bathtub or shower enclosure.
8. This unit must be grounded.
9. This unit is U.L. listed. Type I.C. inherently protected.
CAUTION
!
1. For general ventilating use only. Do not use to exhaust hazardous or
explosive materials and vapors.
2. This product is designed for installation in FLAT CEILINGS ONLY. Do
not mount this product in a wall.
3. The light fixture assembly must be mounted to the fan housing assembly
included with this product. Do not mount the light fixture assembly to
a wiring outlet box.
4. To avoid motor bearing damage and noisy and/or unbalanced impellers,
keep drywall spray, construction dust, etc. off power unit.
5. Please read specification label on product for further information and
requirements.
TYPICAL INSTALLATIONS
HOUSING MOUNTED
DIRECTLY TO JOIST
2x6 (or larger)
Discharge parallel to joists.
HOUSING
2 x 4
CEILING
JOIST or
TRUSS
MOUNTING
TABS
POWER CABLE
ADDITIONAL
FRAMING
2 x 4
CEILING
JOIST or
TRUSS
CEILING
MATERIAL
GRILLE
PAN
GLASS
LIGHT SHADE
HOUSING MOUNTED
TO 2x4 TRUSS
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
HOUSING MOUNTED
TO “I” JOIST
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
*
Additional framing must be a 2x6 (minimum height).
*
*
SUSPENDED CEILINGS
Housing hung with wires -
3-point mount.
PLAN THE INSTALLATION
ROOF CAP*
(with built-in
damper)
WALL CAP*
(with built-in
damper)
4-IN. ROUND
ELBOWS*
4-IN. ROUND
DUCT*
FAN
HOUSING
Seal gaps
around
housing.
Seal duct
joints with
tape.
Keep duct
runs short.
INSULATION
(Place around and
over fan housing.)
POWER
CABLE*
*Purchase
separately.
OR
INSTALL THE HOUSING
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. Position mounting brackets
against joist so that bottom
edge of housing will be flush
with finished ceiling.
Additional positioning
feature for 5/8”, 1”, &
1-1/4” thick ceiling material:
Holes in corners of housing
are labeled with various ceiling
material thicknesses. Position
housing so bottom edge of joist is visible through a matched
set of holes. The housing is now in the proper position for that
ceiling material thickness.
Additional positioning feature for 1/2” thick ceiling material:
Bend two tabs, on side of housing,
90
0
outward. Lift housing until
tabs contact underside of joist.
Mark the keyhole slot on both mounting brackets.
New Construction
5/8
1
1-1/4
TAB
HOLES
BOTTOM EDGE OF JOIST
- PLEASE NOTE -
THE FOLLOWING INSTALLATION ILLUSTRATIONS SHOW 2 X 6
JOISTS. IF YOU HAVE A TRUSS OR “I”-JOIST INSTALLATION, MOUNT
THE VENTILATOR TO THE ADDITIONAL FRAMING IN THE SAME MAN-
NER. (Additional framing must be a 2x6 (minimum height).
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