MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 1
ROOF-MOUNT
POWERED ATTIC VENTILATOR
READ AND SAVE THESE INSTRUCTIONS
CAUTION
1. For general ventilating use only. Do not use to exhaust hazard-
ous or explosive materials and vapors.
WARNING
TOREDUCETHERISKOFFIRE,ELECTRICSHOCK,ORINJURY
TO PERSONS, OBSERVE THE FOLLOWING:
2. To avoid motor bearing damage and noisy and/or unbalanced
impellers, keep drywall spray, construction dust, etc. off power
unit.
3. This unit has an unguarded impeller. Do not use in locations
readily accessible to people or animals.
4. Fanisequippedwithathermostatwhichmaystartfanautomati-
cally.To reduce risk of injury or electric shock while servicing or
cleaning unit, switch power off at service panel and lock service
panel 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.
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. Installationworkandelectricalwiringmustbedonebyaqualified
person(s)inaccordancewithallapplicablecodesandstandards,
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
topreventbackdrafting.Followtheheatingequipmentmanufac-
turer'sguidelinesandsafetystandardssuchasthosepublished
by the National Fire Protection Association (NFPA), and the
American Society for Heating, Refrigeration and Air Condition-
ing Engineers (ASHRAE), and the local code authorities.
5. Home Ventilating Institute (HVI) recommends one square foot
of open air inlet per 300 cfm of fan capacity. The best location
for these air intake vents are under the eaves with direct ac-
cess to the attic. Failure to provide these intakes could cause
natural-draft gas appliances to backdraft.
6. Your attic fan installation will create a screened opening into
your attic space. During a heavy rain storm there could be a
light spray of rain into this attic space. This is a normal condi-
tion with all attic ventilators and will not cause any damage to
the structure. We recommend that you do not store any valu-
able articles directly under the fan opening in the roof. During
extreme rain and wind storms you may want to turn on your
attic ventilator to prevent excess moisture accumulation in your
attic.
5. When cutting or drilling into wall or ceiling, do not damage
electrical wiring and other hidden utilities.
6. The wiring must be permanent.DO NOT USEAN EXTENSION
CORD!Use14GA.MINIMUMcopperwire.AlthoughthePowered
Attic Ventilator may be wired directly to power, we advise that
some type of shut off switch be installed in the line. Please see
the section on electrical wiring for suggested wiring diagrams
and instructions.
7. This unit must be grounded.
8. Do not use this unit with any solid state speed control device
(Models 356 and 358 only).
7. Recordsshow,underidealconditions,exposedgalvanizedsteel
can remain rust free up to 100 years. For best protection, the
exposed portion of the roof sheet should be painted, especially
in areas of unusually high industrial air pollution. Follow paint
manufacturer's instructions for good adhesion.
8. This ventilator is intended for roof installation.The Broan Model
353GableMountVentilatorisavailableforsidewallapplications.
9. The dome may be painted with a high-quality paint. Follow
the paint manufacturer's recommendations for PVC plastic or
aluminum, as appropriate.
10. Pleasereadspecificationlabelonproductforfurtherinformation
and requirements.
TOOLS AND MATERIALS REQUIRED
Slotted Screwdriver
Drill
1/4" Drill Bit
Sabre Saw or Keyhole Saw
Hammer
Pencil
Utility Knife
Pry Bar (to remover roofing nails)
Roofing Cement
Galvanized Roofing Nails (1¾" min.)
Electrical Supplies (to comply with codes)
r
r
r
r
r
r
r
r
r
r
r
r
Ruler
MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 3
6. Cut out the shingles inside of the circle.
9. Cut out the roof board(s) inside of the line.
10. For proper removal of roofing nails, draw a 22" square,
7. Replace template over guide hole and draw a 14-3/8"
diameter circle on the black paper or roof boards using
the smaller half of the template.
centeredaroundthehole.Removenailsholdingshingles
down from top two-thirds of square.
11. Slide the flashing under the shingles. Start two-thirds
of the way down from the top of the 22" square. Do not
bend the shingles any more than necessary. Center the
ventilator over the hole.
8. Drill a large starting hole for the sabre saw just inside of
the line.
MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 4
12. Carefully lift shingles and nail flashing securely to the
roof using galvanized roofing nails.
13. Using a good grade of roofing cement material, seal all
of the shingles and heads of nails.
DO NOT seal the bottom edge of the flashing.
MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 5
BLACK
1. Remove the thermostat wiring box cover plate.Bring the power
THERMOSTAT
BLACK
RED
cable at least 6" into the ventilator wiring box. Fasten power
cable to box with appropriate connector.
TO
MOTOR
GROUND TO
SWITCH BOX
MOTOR
BLACK
TO
HUMIDISTAT
VENTILATOR
WIRING BOX
THERMOSTAT
MOTOR
WHITE
BLACK
BLACK
WHITE
GROUND TO
GROUND TO
SWITCH BOX
SWITCH BOX
TO
MOTOR
BLACK
RED
THERMOSTAT
BY-PASS
SWITCH
HUMIDISTAT
VENTILATOR
WIRING BOX
GROUND TO
SWITCH
BOX
WHITE
WHITE
BLACK
BLACK
WHITE
120 VOLTS
LINE IN
MASTER
ON-OFF
SWITCH
THERMOSTAT BY-PASS SWITCH
WHITE
(SHOULD NORMALLY BE IN “OFF” POSITION)
MASTER
ON-OFF
SWITCH
MASTER
ON-OFF SWITCH
120 VOLTS
LINE IN
MASTER
ON-OFF SWITCH
This diagram shows how to wire a humidistat.
3. Replace the metal cover plate over the thermostat wiring box
and fasten securely.
2. For standard installation, connect the two leads in the ther-
mostat wiring box to the two power leads.Attach ground wire
from the power cable to the green screw in the box.
4. The thermostat setting determines the temperature at which
the ventilator turns “on”. The ventilator automatically turns off
when the attic temperature is 10OF lower than the thermostat.
RED
If you want the ventilator to operate at a different temperature,
insert a screwdriver into the slot and turn the indicator to the
desired temperature.
BLACK
BLACK
TO
MOTOR
THERMOSTAT
The ventilator will now turn “ON”at this temperature and “OFF”
10OF lower.
MOTOR
WHITE
GROUND TO
SWITCH BOX
BLACK
VENTILATOR
WIRING BOX
70OF
80OF
GROUND TO
SWITCH
BOX
90OF
RED
THERMOSTAT
BY-PASS
SWITCH
FAN ON
TEMPERATURE
100OF
110OF
WHITE
120OF
130OF
MASTER
ON-OFF
SWITCH
WHITE
120 VOLTS
BLACK
Indicator shown rotated fully counterclockwise for a setting
of 70OF.
LINE IN
THERMOSTAT BY-PASS SWITCH
(SHOULD NORMALLY BE IN “OFF” POSITION)
MASTER
ON-OFF SWITCH
This diagram shows how to by-pass the thermostat to turn the
ventilator on or off manually.
MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 6
SERVICE PARTS
KEY
NO.
PART
NUMBER
DESCRIPTION
1
2
99150493
99110689
99111463
99111462
98005419
97006971
97009316
97009317
97015612
97008505
98008298
99170254
99260465
99150524
99170245
98009756
98009886
99150471
99030144
97005329
990717160
990717161
990717162
990717250
990722489
990722490
990722491
990722492
990722493
990722494
99250948
#8B-18 x 1/2 Sheet Metal Screw* (3 Required)
Plastic Dome (Models 350, 355, 356)
Plastic Dome, Black (Models 350BK, 355BK, 356BK)
Plastic Dome, Brown (Models 350BR, 355BR, 356BR)
Aluminum Dome (Model 358)
Fan Blade with Setscrew
Motor (Models 350, 350BK, 350BR)
Motor (Models 355, 355BK, 355BR, 358)
Motor (Models 356, 356BK, 356BR)
Roof Plate Assembly
Motor Mount Band (3 Required)
Screw, 5/16-18 x 3/4 Hex Head Machine Screw* (3 Required)
Nut, 5/16-18 Hex* (3 Required)
3
4
5
6
7
8
9
Screw, 1/4 -20 x 1/2* (3 Required)
10
11
#8B-18 x 3/8 Sheet Metal Screw* (3 Required)
Wiring Box (Models 350, 350BK, 350BR, 355, 355BK, 355BR, 358)
Wiring Box (Models 356, 356BK, 356BR)
Green Ground Screw, #10-32 x 1/2 Hex Washer Head*
Adjustable Thermostat
12
13
14
Lead Wire Assembly
15 & 16
Wiring Box Cover with Label (Model 350)
Wiring Box Cover with Label (Model 355)
Wiring Box Cover with Label (Model 358)
Wiring Box Cover with Label (Model 356)
Wiring Box Cover with Label (Model 350BR)
Wiring Box Cover with Label (Model 350BK)
Wiring Box Cover with Label (Model 355BR)
Wiring Box Cover with Label (Model 355BK)
Wiring Box Cover with Label (Model 356BR)
Wiring Box Cover with Label (Model 356BK)
Washer* (3 Required)
**17
*Standard Hardware. May be purchased locally.
**May be removed when serviced.
MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 7
SERVICE PARTS
Replacement parts
can now be ordered
on our website.
Please visit us at
MODELS 350 • 350BK • 350BR • 355 • 355BK • 355BR
356 • 356BK • 356BR • 358
Page 8
WARRANTY
BROAN-NUTONE ONE YEAR LIMITED WARRANTY
Broan-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, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.
During this one-year period, Broan-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 TUBES. 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 Broan-NuTone), faulty installation or installation contrary to recommended installation instructions.
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.
BROAN-NUTONE’S OBLIGATION TO REPAIR OR REPLACE, AT BROAN-NUTONE’S OPTION, SHALL BE THE PURCHASER’S SOLE AND
EXCLUSIVE REMEDY UNDER THIS WARRANTY. BROAN-NUTONE SHALL NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR
SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH PRODUCT USE OR PERFORMANCE. 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 super-
sedes all prior warranties.
To qualify for warranty service, you must (a) notify Broan-NuTone at the address or telephone number below, (b) give the model num-
ber and part identification and (c) describe the nature of any defect in the product or part. At the time of requesting warranty service,
you must present evidence of the original purchase date.
99044488A
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