NuTone 788CHNTC Instruction Manual
DECORATIVE VENTILATION
HOUSING
GRILLE
PA N
GLASS
LIGHT SHADE
CEILING
JOIST
CEILING
MATERIAL
HOUSING
HOUSING
HOUSING
2” x 4”
CEILING
JOIST or
TRUSS
2” x 4”
CEILING
JOIST or
TRUSS
CEILING
MATERIAL
GRILLE
PA N
GLASS
LIGHT SHADE
HOUSING
HOUSING
ADDITIONAL
FRAMING*
"I"
JOIST
"I"
JOIST
GRILLE
PA N
GLASS LIGHT SHADE
CEILING
MATERIAL
!
OR
MODEL 788CHNTC
Page 1
FAN WITH LIGHT
Register your product
online at www.nutone.ca
READ AND SAVE THESE INSTRUCTIONS
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. Not for use in kitchens.
9. This unit must be grounded.
10. This unit is U.L. listed. Type I.C. inherently protected.
11. When applicable local regulations comprise more
restrictive installation and/or certification requirements,
the aforementioned requirements prevail on those of this
document and the installer agrees to conform to these at
his own expenses.
12. When performing installation, servicing or cleaning this unit,
it is recommended to wear safety glasses and gloves.
TYPICAL INSTALLATIONS
HOUSING MOUNTED
DIRECTLY TO JOIST
2” x 6” (or larger)
Discharge parallel to joists.
HOUSING MOUNTED TO “I” JOIST
Requires additional framing
for mounting.
Discharge parallel to joists.
Additional framing must be a 2” x 6” (minimum height), at least 9 inches long.
*
HOUSING MOUNTED
TO 2” x 4” TRUSS
Discharge parallel to joists.
PLAN THE INSTALLATION
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.
Installer: Leave this manual with the
homeowner.
Homeowner: Use and Care
information on page 4.
(Place around and
over fan housing.)
FAN
HOUSING
POWER
CABLE*
Seal gaps
around
housing.
4-IN. ROUND
DUCT*
*Purchase
separately.
INSULATION
Seal duct
joints with
tape.
OR
4-IN. ROUND
ELBOWS*
ROOF CAP*
(with built-in
damper)
Keep duct
runs short
WALL CAP*
(with built-in
damper)
PREPARE THE HOUSING
1. Unplug blower and remove (3) screws securing blower
assembly to housing.
MODEL 788CHNTC
Page 2
INSTALL THE HOUSING
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.
TA B
2. Remove blower assembly from housing and set blower
assembly aside.
TA B
MOUNTING SCREWS
2. Position fan housing against joist so that bottom
edge of housing will be flush with finished ceiling.
Additional positioning feature for 1/2” thick
ceiling material:
Bend two tabs, on side of housing,
housing until tabs contact bottom edge of joist.
3. Use (4) mounting screws (included) to attach housing
to joist.
BOTTOM EDGE OF JOIST
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 fan
housing
against joist.
Trace outline
of housing
on ceiling
material.
3. Remove wiring plate from housing and set plate aside.
3. Set housing aside
and cut ceiling
opening slightly
larger than marked.
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