NuTone HD50NT, HD80NT Quick Start Manual
MODELS HD50NT • HD80NT
!
MATERIAL
POWER CABLE
MATERIAL
POWER CABLE
CEILING
JOIST or
MATERIAL
ADDITIONAL
CEILING VENTILATORS
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. If this unit is to be installed over a tub or
shower, it must be marked as appropriate for
the application and be connected to a GFCI
(Ground Fault Circuit Interrupter) - protected
branch circuit.
8. Never place a switch where it can be
reached from a tub or shower.
9. This unit must be grounded.
TYPICAL INSTALLATIONS
MOUNTING TABS
CEILING
JOIST
HOUSING
CEILING
GRILLE
HOUSING MOUNTED
DIRECTLY TO JOIST
2x6 (or larger)
Discharge parallel to joists.
"I"
JOIST
POWER CABLE
CEILING
MOUNTING
TABS
HOUSING
GRILLE
FRAMING
"I"
JOIST
*
HOUSING MOUNTED TO “I” JOIST
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
POWER
CABLE*
HOUSING
INSULATION*
(Place around and
over Fan Housing.)
FAN
2 x 4
CEILING
JOIST or
TRUSS
CEILING
HOUSING MOUNTED
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
* Additional framing must be a 2x6
(minimum height).
MOUNTING
TABS
HOUSING
GRILLE
TO 2x4 TRUSS
ADDITIONAL
FRAMING
ROOF CAP*
(with built-in
damper)
Keep duct
runs short.
*
2 x 4
TRUSS
CAUTION
1. For general ventilating use only. Do not use
to exhaust hazardous or explosive materials
and vapors.
2. To avoid motor bearing damage and noisy
and/or unbalanced impellers, keep drywall
spray, construction dust, etc. off power unit.
3. Please read specification label on product
for further information and requirements.
Seal gaps
around
Housing.
4-IN. ROUND
*Purchase
separately.
DUCT*
Seal duct
joints with
tape.
OR
4-IN.
ROUND
ELBOWS*
WALL CAP*
(with built-in
damper)
Installer: Leave this manual with the homeowner.
Homeowner: Use and Care information on page 4.
MODELS HD50NT • HD80NT
CEILING MATERIAL
Page 2
TYPICAL INSTALLATIONS
(continued)
4" ROUND
DUCT
SUSPENDED
HOUSING
GRILLE
POWER
CABLE
MOUNTING
TAB
SUSPENDED CEILINGS
Housing hung with wires - 3-point mount.
INSTALL THE HOUSING
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 -
INSTALL THE HOUSING
(continued)
New Construction
3. Set housing aside and drive nails partially into joist at the
top of both keyhole marks.
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.
HOLES
TAB
1-1/4
1
5/8
BOTTOM EDGE OF JOIST
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
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.
Existing 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. 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.
MODELS HD50NT • HD80NT
UNIT
SWITCH BOX
LINE
(purchase separately)
LINE IN
RECEPTACLE
Page 3
INSTALL THE HOUSING
(continued)
Existing Construction
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.
ADDITIONAL
MOUNTING
HOLES
CONNECT THE WIRING
SCHEMATIC WIRING DIAGRAM
BLK
ON / OFF
SWITCH
BLK
IN
ON / OFF SWITCH
WHT
GRD
SWITCH BOX
120 VAC
WHT
GRD
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.
BLK
BLACK
WHITE
GROUND
(bare)
WIRING
PLATE
M
WHT
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.
INSTALL THE DUCTWORK
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.
ATTACH THE GRILLE
FLUSH
1. Squeeze grille springs together and insert springs into
slots in motor plate.
2. Push grille up against ceiling.
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