Broan 757SNC Instruction Manual

MODEL 757SNC

BH0012A

Register your product

online at www.broan.ca

DECORATIVE
CEILING VENTILATOR

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 qualified personnel in accordance with
all applicable codes and standards, including
fi re-rated construction codes and standards.

4. Suffi cient air is needed for proper combustion and
exhausting of gases through the fl ue (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 cULus listed. Type I.C. inherently protected.

10. When applicable local regulations comprise more
restrictive installation and/or certifi cation requirements,
the aforementioned requirements prevail on those of
this document and the installer agrees to conform to
these at his own expenses.

11. When performing installation, servicing or cleaning
this unit, it is recommended to wear safety glasses
and gloves.

TYPICAL INSTALLATIONS

BH0013A

HOUSING MOUNTED

DIRECTLY TO JOIST

2 x 6 (or larger)

Discharge parallel to joists.

*

BH0014A

HOUSING MOUNTED

TO 2 x 4 TRUSS

Requires additional framing

for mounting tabs.

Discharge parallel to joists.

*

HOUSING MOUNTED

TO ADDITIONAL FRAMING

Discharge 90° to joists.

BH0015A

HOUSING MOUNTED

Requires additional framing

for mounting tabs.

Discharge 90° to joists.

TO 2 x 4 TRUSS

Page 1

*

*

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 fi xture assembly must be mounted to the
fan housing assembly included with this product. Do

not mount the light fi xture 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 specifi cation label on product for further
information and requirements.

!

*

BH0016A

HOUSING MOUNTED TO “I” JOIST

Requires additional framing

for mounting tabs.

Discharge parallel to joists.

*Additional framing must be a 2 x 6 (minimum height), at least 9-inch long.

BH0017A

HOUSING MOUNTED TO “I” JOIST

Requires additional framing

for mounting tabs.

Discharge 90° to joists.

Installer: Leave this manual with the homeowner.

Homeowner: Use and Care information on page 4.

MODEL 757SNC

Page 2

TYPICAL INSTALLATIONS
(continued)

BH0018A

SUSPENDED CEILINGS

Housing hung with wires - 3-point mount.

INSTALL THE HOUSING

- PLEASE NOTE -

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 2 x 6
(minimum height), at least 9-inch long.)

INSTALL THE HOUSING
(continued)

New Construction

BR0004

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

BR0003

2. Position mounting brackets against joist so that bottom edge of housing
will be fl ush with fi nished ceiling.

Additional positioning feature for 5/8”, 1”, & 1¼”

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,

tabs contact underside of joist.

Mark the keyhole slot on both mounting brackets.

BOTTOM EDGE OF JOIST

90° outward. Lift housing until

BR0005

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.

BR0006

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.

MODEL 757SNC

Page 3

INSTALL THE HOUSING
(continued)

Existing Construction

BR0007

4. Place housing in opening so that its bottom edge is fl ush with fi nished
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

BD0003

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

FLUSH

NOTE: The duct connector
has a counter-balanced damper
fl ap. The fl ap 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 fl ap, preventing air from entering
unit or fi nished space.

1. Snap the damper/duct connector onto housing. Make sure that tabs on

2. Connect 4” round duct to damper/duct connector and extend duct to outside

BJ0003

the connector lock into slots in housing. Top of damper/duct connector
should be fl ush with top of housing.

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

BE0004A

DUAL CONTROL

(purchase separately)

LIGHT

FAN

BLK
WH T
GRD

SWITCH BOX

BLACK
WHITE
BLUE

SWITCH BOX

RED

BLK

WHT

GRD

BLU

BLK

WIRING

RED
GROUND

(bare)

PLATE

LIGHT

(WHITE)

VENT

(BLACK)

UNIT

WH T

WH T

WHITE

RECEPTACLE

(LIGHT)

1.Wire unit following diagram

BE0005A

120 VAC

LINE IN

above. Run electrical cable as direct

as possible to unit. Do not allow cable to

touch sides or top of unit after installation

is completed.

ATTACH THE GRILLE PAN
AND GLASS SHADE

1. Thread a knurled nut onto the short
end of each shade ring support.
Install supports from top and
through holes in grille pan.

2. Locate the grille pan over the
fan housing and connect the
wiring harness plug into white
receptacle in the fan housing.

3. Insert rod through center hole
of grille pan. Use washer
between collar on rod and
pan. Thread rod onto grille
screw in housing, until pan is
tight against ceiling.

4. Install bulbs. Use 60 Watts
(maximum), candelabra base
bulbs.

5. Install the shade ring onto two
of the supports and secure
each with a knurled nut.

6. Place glass shade into the
shade ring. Install the third
support and secure with a
knurled nut.

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

BD0006A

60 WATTS MAX.

CANDELABRA

BLACK

RECEPTACLE

(FAN)

BASE BULBS

(2 REQ.)

BL0005A