Broan Ventilation Hood 350 User Manual

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 “ONat 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.  
Broan-NuTone LLC Hartford, Wisconsin www.broan.com 800-558-1711  
99044488A  
 

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