MODELS 350 • 355 • 356 • 358
!
ROOF-MOUNT
POWERED ATTIC VENTILATOR
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 guidelines 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. The wiring must be permanent. DO NOT USE AN EXTENSION
CORD! Use 14 GA. MINIMUM copper wire. Although the
Powered 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).
TOOLS AND MATERIALS REQUIRED
CAUTION
1. For general ventilating use only. Do not use to exhaust hazardous 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. This unit has an unguarded impeller. Do not use in locations
readily accessible to people or animals.
4. Fan is equipped with a thermostat which may start fan automatically. 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.
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 access
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 condition
with all attic ventilators and will not cause any damage to the
structure. We recommend that you do not store any valuable
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.
7. Records show, under ideal conditions, exposed galvanized
steel 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
353 Gable Mount Ventilator is available for side wall applications.
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.Please read specification label on product for further information and requirements.
Slotted Screwdriver
❑
Drill
❑
1/4" Drill Bit
❑
Sabre Saw or Keyhole Saw
❑
Hammer
❑
Ruler
❑
Pencil
❑
Utility Knife
❑
Pry Bar (to remover roofing nails)
❑
Roofing Cement
❑
Galvanized Roofing Nails (1¾" min.)
❑
Electrical Supplies (to comply with codes)
❑
MODELS 350 • 355 • 356 • 358
3. Drill a guide hole through the roof at this mark.
Page 2
1. Locate the ventilator at the center of the rear slope of the
roof. Place it as high on the roof as possible. The location
should be free of obstacles (T.V. leads, electrical lines,
etc.) If the ventilator top is level with the roof peak, it can't
be seen from the street. Keep this approximate location
in mind as you work from within the attic.
3
4
2
1
7
6
5
8
9
2. Mark a spot halfway between rafters.
4. Cut out the template found on the carton.
5. Push a large nail through the center of the cardboard
template and into the guide hole.
Using the large half of the template, draw a 17½" diameter
circle on the shingles.
MODELS 350 • 355 • 356 • 358
Page 3
6. Cut out the shingles inside of the circle.
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.
9. Cut out the roof board(s) inside of the line.
10. For proper removal of roofing nails, draw a 22" square,
centered around the hole. Remove nails holding shingles
down from top two-thirds of square.
8. Drill a large starting hole for the sabre saw just inside of
the line.
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.
MODELS 350 • 355 • 356 • 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 • 355 • 356 • 358
Page 5
1. Remove the thermostat wiring box cover plate. Bring the
power cable at least 6" into the ventilator wiring box. Fasten
power cable to box with appropriate connector.
BLACK
TO
MOTOR
BLACK
MASTER
ON-OFF SWITCH
WHITE
BLACK
120 VOLTS
LINE IN
GROUND TO
SWITCH
WHITE
WHITE
GROUND TO
SWITCH BOX
BOX
THERMOSTAT
VENTILATOR
WIRING BOX
MASTER
ON-OFF
SWITCH
MOTOR
BLK
BLK
GRD
GRD
WHT
WHT
2. For standard installation, connect the two leads in the thermostat wiring box to the two power leads. Attach ground wire
from the power cable to the green screw in the box.
BLACK
WHITE
RED
GROUND TO
SWITCH BOX
GROUND TO
SWITCH
BOX
WHITE
MASTER
ON-OFF
SWITCH
BLACK
THERMOSTAT
VENTILATOR
WIRING BOX
THERMOSTAT
BY-PASS
SWITCH
BLK
MOTOR
RED
BLK
GRD
GRD
WHT
WHT
BLACK
TO
MOTOR
WHITE
RED
BLACK
120 VOLTS
LINE IN
THERMOSTAT BY-PASS SWITCH
(SHOULD NORMALLY BE IN “OFF” POSITION)
MASTER
ON-OFF SWITCH
BLACK
RED
TO
MOTOR
WHITE
RED
BLACK
120 VOLTS
LINE IN
THERMOSTAT BY-PASS SWITCH
(SHOULD NORMALLY BE IN “OFF” POSITION)
MASTER
ON-OFF SWITCH
BLACK
GROUND TO
SWITCH BOX
THERMOSTAT
BLACK
TO
HUMIDISTAT
WHITE
WHITE
BLACK
GROUND TO
SWITCH BOX
HUMIDISTAT
THERMOSTAT
VENTILATOR
WIRING BOX
BY-PASS
SWITCH
MASTER
ON-OFF
SWITCH
BLK
MOTOR
BLK
RED
GRD
GRD
WHT
WHT
This diagram shows how to wire a humidistat.
3. Replace the metal cover plate over the thermostat wiring box
and fasten securely.
4. The thermostat setting determines the temperature at which
the ventilator turns “on”. The ventilator automatically turns
off when the attic temperature is 10
O
F lower than the thermo-
stat.
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.
The ventilator will now turn “ON” at this temperature and “OFF”
10OF lower.
70OF
FAN ON
TEMPERATURE
80
O
F
O
90
F
O
100
F
110OF
O
F
120
O
F
130
Indicator shown rotated fully counterclockwise for a setting
O
F.
of 70
This diagram shows how to by-pass the thermostat to turn the
ventilator on or off manually.
MODELS 350 • 355 • 356 • 358
SERVICE PARTS
KEY PART DESCRIPTION
NO. NUMBER
1 99150493 #8B-18 x 1/2 Sheet Metal Screw* (3 Required)
2 99110689 Plastic dome (Models 350, 355, 356)
98005419 Aluminum Dome (Model 358)
3 97006971 Fan Blade with Setscrew
4 97009316 Motor (Model 350)
97009317 Motor (Models 355, 358)
97015612 Motor (Model 356)
5 97008505 Roof Plate Assembly
6 98006874 Motor Mount Band (3 Required) (Models 355, 356, 358)
98008298 Motor Mount Band (3 Required) (Model 350)
7 99170254 Screw, 5/16-18 x 3/4 Hex Head Machine Screw* (3 Required)
8 99260465 Nut, 5/16-18 Hex* (3 Required)
9 99150524 Screw, 1/4 -20 x 1/2* (3 Required)
10 99170245 #8B-18 x 3/8 Sheet Metal Screw* (3 Required)
11 98006867 Wiring Box (Models 350, 355, 358)
98009886 Wiring Box (Model 356)
12 99150471 Green Ground Screw, #10-32 x 1/2 Hex Washer Head*
13 99030144 Adjustable Thermostat
14 97005329 Lead Wire Assembly
15 98006877 Wiring Box Cover
16 99076392 Label (Model 350)
99076394 Label (Model 355)
990717250 Label (Model 356)
99076398 Label (Model 358)
**17 99250948 Washer* (3 Required)
Page 6
*Standard Hardware. May be purchased locally.
**May be removed when serviced.
SERVICE PARTS
MODELS 350 • 355 • 356 • 358
Page 7
Replacement parts
can now be ordered
on our website.
Please visit us at
www.Broan.com
MODELS 350 • 355 • 356 • 358
Page 8
WARRANTY
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 supersedes 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 number 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.
Broan-NuTone LLC, 926 West State Street, Hartford, WI 53027 (1-800-637-1453)
99043055F
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