Broan 750 User manual

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Page 1
MODEL 750
!
WARNING
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN-
JURY 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. efore 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 promi-
nent warning device, such as a tag, to the service panel.
3. Installation work and electrical wiring must be done by a quali-
fied person(s) in accordance with all applicable codes and stan-
dards, 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 authori-
ties.
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. To reduce the risk of electrical shock, do not use this fan with
any solid-state speed control.
10. Not for use in kitchens.
11. Do not install in a ceiling insulated to a value greater than R-40.
12. This unit must be grounded.
CAUTION
1. For general ventilating use only. Do not use to exhaust hazard-
ous 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 informa-
tion and requirements.
FAN / LIGHT / NIGHT LIGHT
COMBINATION VENTILATOR
READ AND SAVE THESE INSTRUCTIONS
FOR BEST RESULTS
When installing the Exhaust Fan/Light in a new construction site,
install housing during the rough-in construction of the building.
The blower unit, reflector and grille should be installed after the
finished ceiling is in place.
PLANNING DUCTWORK AND WIRING
DUCTWORK
1. Use 4" round duct.
2. Plan duct run from discharge opening of fan to the outside. For
best fan performance, make duct run as short as possible and
use minimum number of elbows.
3. Use optional roan ducting accessories as needed.
WIRING
Plan to run 120 VAC house wiring (with ground) from power source,
through wall switch, to junction box in housing. For separate con-
trol of fan, light, night light, three wall switches are required and
five conductors are needed between the wall switch box and the
fan’s junction box.
IMPORTANT: Use wire suitable for 90oC.

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Page 2
MODEL 750
INSTALLATION IN A
NEW CONSTRUCTION SITE
PREPARATION
1. R f r to Figur 1. Remove power unit/blower assembly from
housing.
A. Unplug power unit.
. Remove screw (located next to plug-in receptacle) which holds
power/blower unit mounting plate in place. Save screw.
C. Lift mounting plate at end near the plug-in receptacle until blower
wheel clears the scroll.
D. Remove plate by pulling its tabs out of slots in housing. Set
power/blower unit aside until needed.
MOUNTING THE HOUSING
MOUNTNG USING MOUNTING TABS
R f r to Figur 2.
1. Locate fan housing next to ceiling joist.
2. Use wood screws (not provided) to loosely attach housing to
ceiling joist through the keyhole slots in mounting tabs.
3. Adjust housing so that it will be flush with finished ceiling. For
the grille to fit properly, the housing’s rim must not extend be-
yond finished ceiling surface.
4. When housing is properly adjusted, tighten screws in slots.
MOUNTING USING HANGER BARS
R f r to Figur 3.
1. Insert hanger bars in slots provided in housing.
2. Locate fan housing between joists so that the bottom of the
housing is even with the planned finished ceiling. Extend the
hanger bars to the joists.
3. Use screws or nails (not provided) to secure hanger bars to
ceiling joists.
INSTALLING DUCTWORK
1. R f r to Figur 2. Place duct collar over flanges at discharge
opening of fan. Secure collar by snapping tabs into slots in
flanges.
2. Run 4" round duct from fan’s discharge opening to the outside
and terminate.
3. Connect duct to fan’s duct collar.
WIRING
All wiring must comply with local cod s and unit must b prop-
rly ground d.
1. Run 120vAC house wiring (with ground) from wall switches to
fan location. See Figure 4.
2. Insert and secure an approved box connector into wiring en-
trance hole.
3. Pull wires through box connector and into junction box. Tighten
box connector.
4. R f r to Figur 4. Connect white wires from the fan and light
receptacles to white (neutral) wire from the supply. Connect
black wire to wire from fan switch. Connect red wire to wire from
light switch. Connect yellow wire to wire from night light switch.
5. Connect the green (or bare) ground wire to the green ground
lead.

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Page 3
MODEL 750
POWER/BLOWER UNIT INSTALLATION
1. R f r to Figur 1. Place power/blower unit into housing so that
mounting plate’s tabs insert into slots in housing.
2. Press other end of mounting plate down until it is firmly seated
over scroll and plug-in receptacles.
3. Secure mounting plate to housing with provided screw.
4. Insert motor plug into junction box receptacle.
COMPLETING INSTALLATION
1. Insert lamp plug into junction box receptacle and secure reflec-
tor assembly to motor frame with wing nut provided.
2. Insert lamp (100 watt maximum for light - 7 watt maximum for
night light) into the socket.
NOTE: Lamp must be purchased separately.
3. Insert the grille assembly’s mounting springs into the slots on
both sides of the housing by squeezing the springs together.
4. Press grille assembly firmly into place against the ceiling.
INSTALLATION IN EXISTING CONSTRUCTION
PLANNING
Review “INSTALLATION IN A NEW CONSTRUCTION SITE” and
follow all instructions which apply to your installation.
LOCATION: Locate fan between ceiling joists.
WIRING AND DUCTING: Plan ducting and wiring EFORE pro-
ceeding with installation.
CAUTION: Check area above planned location to be sure that:
1. Ducting can be installed or that area is sufficient for proper
venting.
2. Wiring can be run to the planned location.
3. No wiring or other obstruction might interfere with installation.
INSTALLATION
1. The fan must be mounted between ceiling joists. Decide where
you want to locate the fan, and then determine where the near-
est joists are.
2. Locate the joists. Drill a starter hole in the ceiling between the
joists.
3. To exactly locate the edge of joist, saw a line from hole to joist.
4. R f r to pag 1. Remove power/blower unit from housing.
5. Use the housing pan as a template to mark cutout: place pan
centered between joist and trace around pan.
6. Make cutout along outside of marked line.
7. R f r to Figur 6. Install 2 x 4 cleats to both ceiling joists. In
some cases it may be necessary to use more than a single cleat
on one side. The distance between cleats must be at least 9 1 /
8" but not more than 10".
8. Remove side wiring knockout and insert and secure an ap-
proved box connector into the wiring entrance hole.
9. Use pliers to bend both mounting tabs as flush as possible to
the side of the housing.
10. Install duct collar.
11. String wiring through box connector and connect 4" flexible
duct to duct collar.
12. Carefully push ductwork and wiring back into cutout. Place
housing into cutout.
13. Use wood screws to secure housing to cleats through four
holes in housing’s pan. make sure pan is flush to finished ceil-
ing.
14. Install Power/ lower Unit and complete installation.

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Page 4
MODEL 750
USE AND CARE USE AND CARE
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND
LOCK OUT SERVICE PANEL BEFORE RELAMPING, CLEAN-
ING, OR SERVICING THIS UNIT.
RELAMPING
Pull grille assembly away from ceiling.
Squeeze the grille assembly’s mounting springs together, and
remove grille asembly from housing to expose socket for relamping.
Insert lamp (100 watt maximum for light - 7 watt maximum for night
light) into the socket. NOTE: Lamp must be purchased separately.
Replace grille assembly flat against the ceiling after relamping.
CLEANING
Pull grille assembly away from ceiling.
Squeeze the grille assembly’s mounting springs together, and
remove grille asembly from housing for cleaning.
Clean grille and lens assembly using a mild soap and water solu-
tion. Assemblies with wood frames should not be immersed.
Replace grille assembly flat against the ceiling after cleaning.
MOTOR LUBRICATION
The motor is permanently lubricated. Do not oil or disassemble
motor.
SERVICE PARTS WARRANTY
BROAN-NUTONE ONE YEAR LIMITED WARRANTY
roan-NuTone warrants to the original consumer purchaser of its products that such products will be
free from defects in materials or workmanship for a period of one year from the date of original purchase.
THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, UT NOT
LIMITED TO, IMPLIED WARRANTIES OF MERCHANTA ILITY OR FITNESS FOR A PARTICU-
LAR PURPOSE.
During this one-year period, roan-NuTone will, at its option, repair or replace, without charge, any
product or part which is found to be defective under normal use and service.
THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS AND TU ES.
This warranty does not cover (a) normal maintenance and service or (b) any products or parts
which have been subject to misuse, negligence, accident, improper maintenance or repair (other
than by roan-NuTone), faulty installation or installation contrary to recommended installation instruc-
tions.
The duration of any implied warranty is limited to the one-year period as specified for the express
warranty. Some states do not allow limitation on how long an implied warranty lasts, so the above
limitation may not apply to you.
ROAN-NUTONE’S O LIGATION TO REPAIR OR REPLACE, AT ROAN-NUTONE’S OPTION,
SHALL E THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY.
ROAN-NUTONE SHALL NOT E LIA LE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL
DAMAGES ARISING OUT OF OR IN CONNECTION WITH PRODUCT USE OR PERFOR-
MANCE. Some states do not allow the exclusion or limitation of incidental or consequential damages,
so the above limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights, which vary from
state to state. This warranty supersedes all prior warranties.
KEY PART NO. DESCRIPTION
1 61736-000 Power Unit Assembly
2 86933-000 Motor
3 32787-000 Motor Isolation Mount
4 32788-000 Ground Clip
5 5901A-000 lower Wheel
6 63007-000 Push Nut
7 85974-000 Reflector Assembly
8 85950-000 Lamp Socket Assembly
9 30652-000 Duct Adapter Assembly
10 44388-000 Hanger ar
11 0871 -000 Grille & Lens Assembly
12 85968-000 Grille & Spring Assembly
13 61738-000 Lens
14 0444A-000 Grille Spring (2 req.)
15 16133-000 Wing Nut
16 10034-000 Fan Receptacle
17 36892-000 Light Receptacle
18 89248-000 Reflector
* Not shown assembled.
Order replacement parts by “PART NO.” - not by “KEY NO.” 5/02 part no. 61740 99043077C