NuTone 773BNNT Quick Start Manual
MODEL 773BNNT
DECORATIVE VENTILATION
FAN WITH LIGHT
READ AND SAVE THESE INSTRUCTIONS
Page 1
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY TO PERSONS, 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 being 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 tub 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
POWER CABLE
MOUNTING TABS
CEILING
JOIST
CEILING
MATERIAL
HOUSING
HOUSING
GRILLE
PAN
GLASS
LIGHT SHADE
HOUSING MOUNTED
DIRECTLY TO JOIST
2x6 (or larger)
Discharge parallel to joists.
POWER CABLE
"I"
JOIST
CEILING
MATERIAL
GLASS LIGHT SHADE
MOUNTING
TABS
HOUSING
ADDITIONAL
FRAMING
"I"
JOIST
GRILLE
PAN
*
HOUSING MOUNTED TO “I” JOIST
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
Additional framing must be a 2x6 (minimum height).
*
POWER CABLE
2 x 4
CEILING
JOIST or
TRUSS
CEILING
MATERIAL
HOUSING MOUNTED
TO 2x4 TRUSS
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
4" ROUND
DUCT
SUSPENDED
CEILING
MATERIAL
SUSPENDED CEILINGS
Housing hung with wires -
3-point mount.
PLAN THE INSTALLATION
INSULATION
(Place around and
over fan housing.)
FAN
HOUSING
POWER
CABLE*
MOUNTING
TABS
HOUSING
HOUSING
ADDITIONAL
FRAMING
*
2 x 4
CEILING
JOIST or
TRUSS
GRILLE
PAN
GLASS
LIGHT SHADE
POWER
CABLE
MOUNTING
TAB
GRILLE
PAN
GLASS
LIGHT SHADE
ROOF CAP*
(with built-in
damper)
Keep duct
runs short.
Installer:
Leave this manual with the
homeowner.
Homeowner:
Use and Care information on page 4.
Seal gaps
around
housing.
4-IN. ROUND
DUCT*
*Purchase
separately.
Seal duct
joints with
tape.
OR
4-IN. ROUND
ELBOWS*
WALL CAP*
(with built-in
damper)
INSTALL THE HOUSING
MODEL 773BNNT
Page 2
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 MANNER. (Additional framing must be a 2x6 (minimum height).
- PLEASE NOTE -
New Construction
HOLES
TAB
1-1/4
1
5/8
BOTTOM EDGE OF JOIST
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,
housing until tabs contact underside of joist.
Mark the keyhole slot on both mounting brackets.
900 outward. Lift
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.
4. Place housing in opening so that its bottom edge is flush
with finished ceiling. Nail to joist through keyhole on both
sides. To ensure a noise-free installation, drive another nail
through the top hole of each mounting bracket.
3. Set housing
aside and drive
nails partially
into joist at the
top of both keyhole marks.
4. Hang housing from
nails and pound
nails tight. To ensure a noise-free
mount, pound another nail through
the top hole of each
mounting tab.
RECOMMENDED: SEAL BETWEEN
CEILING MATERIAL & HOUSING (4 SIDES)
ADDITIONAL
MOUNTING
HOLES
5. Additional mounting holes are provided for installations
where access from above is inconvenient or not possible.
Nail or screw housing directly to joists or framing.
Recommended: Seal between ceiling material & housing
on all 4 sides to prevent air leakage.
MODEL 773BNNT
RECEPTACLE
Page 3
INSTALL THE DUCTWORK
FLUSH
NOTE: The duct connector has a counter-balanced damper
flap. The flap will be “open” approx. 1” when duct connector
is attached to housing. This design permits insulation to be
in direct contact with fan/light housing per UL (Underwriters
Laboratories) standards. The slightest backdraft, however,
will close the damper flap, preventing air from entering unit
or finished space.
1. Snap the damper/duct connector onto housing. Make sure
that tabs on the connector lock into slots in housing. Top of
damper/duct connector should be flush with top of housing.
2. Connect 4” round duct to damper/duct connector and
extend duct to outside through a roof or wall cap. Check
damper to make sure that it opens freely. Tape all duct
connections to make them secure and air tight.
CONNECT THE WIRING
SCHEMATIC WIRING DIAGRAM
LIGHT
SWITCH
VENT
SWITCH
LINE
IN
DUAL CONTROL
(purchase separately)
LIGHT
FAN
BLK
WHT
GRD
SWITCH BOX
SWITCH BOX
120 VAC
LINE IN
BLACK
WHITE
BLUE
RED
BLK
WHT
GRD
BLU
BLK
WIRING
PLATE
LIGHT
(WHITE)
(BLACK)
RED
GROUND
(bare)
VENT
UNIT
WHT
WHT
WHITE
RECEPTACLE
(LIGHT)
BLACK
(FAN)
ATTACH THE GRILLE PAN AND
GLASS SHADE
GRILLE PAN
LOCK WASHER
ROD
GLASS SHADE
GRILLE
PAN
WASHER
ROD
GLASS
SHADE
FINIAL
NUT
1. Locate the grille pan over the fan housing and connect the
wiring harness plug into white receptacle in the fan housing.
2. Insert rod through center hole of grille pan. Use lock washer
between collar on rod and pan.
3. Thread rod onto grille screw in housing, until pan is tight
against ceiling. Do not over-tighten mounting rod.
4. Install bulbs. Use 13-watt (maximum), GU24 base, fluorescent
bulbs with a M.O.L. (maximum overall length) of 4.8 inches
or less.
5. Place washers and glass shade over mounting rod and align
shade over grille pan. Secure glass shade to mounting rod
with felt washer and finial nut as shown.
6. Restore electrical power and check operation of the unit.
GRILLE SCREW
COLLAR
WASHERS
FELT WASHER
13 WATT
MAX.
GU24 BASE
FLUORESCENT
BULBS
LOCK
(2 REQ.)
STEEL WASHER
FELT
WASHER
(Add second
washer as
needed to
secure shade
tightly.)
FELT
WASHER
1. Wire unit following diagram above. Run electrical cable as
direct as possible to unit. Do not allow cable to touch sides
or top of unit after installation is complete.
Loading...