NuTone 745BNNT Instructions Manual

DECORATIVE VENTILATION
FAN WITH LIGHT
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 manufac-
turer. 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 dam-
age 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 unbal-
anced 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.

TYPICAL INSTALLATIONS

POWER CABLE
MOUNTING TABS
CEILING
JOIST
HOUSING
HOUSING
CEILING
MATERIAL
LIGHT SHADE
HOUSING MOUNTED
DIRECTLY TO JOIST
2x6 (or larger)
Discharge parallel to joists.
ADDITIONAL
POWER CABLE
FRAMING
MOUNTING
TABS
HOUSING
I
" "
JOIST
CEILING
MATERIAL
GRILLE
GLASS LIGHT SHADE
HOUSING MOUNTED TO "I" JOIST
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
*
Additional framing must be a 2x6 (minimum height), at least 9-inches long.
PLAN THE INSTALLATION
INSULATION
(Place around and
over fan housing.)
FAN
HOUSING
POWER
CABLE*
Seal gaps
around
housing.
4-IN. ROUND
DUCT*
Seal duct
joints with
*Purchase
tape.
separately.
MODEL 745BNNT
POWER CABLE
2 x 4
CEILING
JOIST or
TRUSS
GRILLE
CEILING
PAN
MATERIAL
GLASS
HOUSING MOUNTED
TO 2x4 TRUSS
Requires additional framing
for mounting tabs.
Discharge parallel to joists.
*
4" ROUND
DUCT
I
" "
JOIST
SUSPENDED
PAN
CEILING
MATERIAL
SUSPENDED CEILINGS
Housing hung with wires -
3-point mount.
OR
4-IN. ROUND
ELBOWS*
Page 1
ADDITIONAL
*
MOUNTING
FRAMING
TABS
2 x 4
CEILING
JOIST or
TRUSS
HOUSING
GRILLE
PAN
GLASS
LIGHT SHADE
POWER
CABLE
MOUNTING
HOUSING
TAB
GRILLE
PAN
GLASS
LIGHT SHADE
ROOF CAP*
(with built-in
damper)
Keep duct
runs short.
WALL CAP*
(with built-in
damper)