NuTone 742RBNT, 742WHNT, 742SNNT User Manual

MODELS 742RBNT • 742WHNT • 742SNNT

G

G

r

HOUSING

MOUNTING TABS

POWER CABLE

4" ROUND

DUCT

ADDITIONAL

FRAMING

"I"

JOIST

"I"

JOIST

CEILING

MATERIAL

GRILLE

PAN

GLASS

LIGHT SHADE

DECORATIVE SERIES
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. NEVER place a switch where it can be reached
from a tub or shower.

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 ceiling installation
only. This product is designed for installation in
ceilings up to a 12/12 pitch. Ductwork must point
up. 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/

5. Please read specification label on product for

or unbalanced impellers, keep drywall spray,
construction dust, etc. off power unit.

further information and requirements.

TYPICAL INSTALLATIONS

4" ROUND

POWER CABLE

MOUNTING TABS

CEILING

JOIST

CEILING

MATERIAL

HOUSING

HOUSING MOUNTED
DIRECTLY TO JOIST

2x6 (or larger)

GRILLE

PAN

GLASS

LIGHT SHADE

POWER CABLE

MOUNTING TABS

HOUSING

CEILING

MATERIAL

GLASS

LIGHT SHADE

HOUSING MOUNTED

TO ADDITIONAL FRAMING

Discharge 900 to joists.

Discharge parallel to joists.

POWER CABLE

2 x 4
CEILING
JOIST or

TRUSS

CEILING

MATERIAL

MOUNTING

HOUSING

HOUSING MOUNTED

TO 2x4 TRUSS

Requires additional framing

for mounting tabs.

Discharge parallel to joists.

POWER CABLE

"I"

JOIST

CEILING

MATERIAL

GLASS LIGHT SHADE

MOUNTING

HOUSING

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.

*

TABS

TABS

ADDITIONAL

FRAMING

GRILLE

GLASS

LIGHT SHADE

ADDITIONAL

FRAMING

"I"

JOIST

GRILLE

PAN

*

2 x 4
CEILING
JOIST or

TRUSS

PAN

*

POWER CABLE

MOUNTING TABS

HOUSING

2 x 4
CEILING
JOIST or

TRUSS

GLASS

LIGHT SHADE

HOUSING MOUNTED TO 2x4 TRUSS

Requires additional framing

for mounting tabs.

Discharge 900 to joists.

HOUSING MOUNTED TO “I” JOIST

Requires additional framing

for mounting tabs.

Discharge 900 to joists.

Installer: Leave this manual with the homeowner.

Homeowner: Use and Care information on page 4.

DUCT

GRILLE PAN

4" ROUND

DUCT

GRILLE PAN

ADDITIONAL

FRAMING

ADDITIONAL

FRAMING

CEILING

MATERIAL

CEILIN
JOIST o

*

*

CEILIN

JOIST

*

2 x 4

TRUSS

MODELS 742RBNT • 742WHNT • 742SNNT

Page 2

TYPICAL INSTALLATIONS
(continued)

4" ROUND

DUCT

SUSPENDED

CEILING

MATERIAL

HOUSING

POWER

CABLE

MOUNTING

TAB

GRILLE

PAN

GLASS

LIGHT SHADE

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), at least 9-inches long.)

- 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/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.

INSTALL THE HOUSING

MODELS 742RBNT • 742WHNT • 742SNNT

Page 3

CONNECT THE WIRING

(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

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.

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

RED
GROUND

(bare)

WIRING

PLATE

LIGHT

(WHITE)

(BLACK)

VENT

UNIT

WHT

WHT

WHITE

RECEPTACLE

(LIGHT)

BLACK

RECEPTACLE

(FAN)

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.

ATTACH THE GRILLE PAN AND
GLASS SHADE

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.

1. Locate the grille pan over
the fan housing and con­nect the wiring harness

GRILLE

PAN

GRILLE

SCREW

plug into white receptacle
in the fan housing.

2. Insert rod through center
hole of grille pan. Use
washer between collar on
rod and pan.

WASHER

ROD

COLLAR

3. Thread rod onto grille screw in housing, until pan is tight
against ceiling.

4. Install bulbs. (see "Bulb Replace­ment" chart on next page for proper
bulbs for your model).

5. Place glass shade over mounting
rod and align shade onto grille pan.
Secure glass shade to grille pan with
finial cap and finial nut as shown.

6. Restore electrical power and check operation of the unit.