Air Vent Inc. PowerCool Plus Solar Attic Fan Installation Instructions

							Warning:Read all warning messages and instructions
before starting installation of this fan. Failure to follow 
these safety instructions can result in injury or even 
death. If you need assistance in understanding these
instructions or have questions or comments, please 
call 1 (309) 692-6969. This is a toll-free call.
ELECTRICAL HAZARDS
Danger:The electrical installation and wiring of this fan
must be done by a qualified electrician in accordance 
with all local codes and standards, including fire-rated 
construction. Failure to do the installation properly can
result in fire or even death. 
NOTE: A few hours of operation without apparent prob-
lems does not necessarily imply that the installation is safe. 
Danger:Do not substitute a solid-state speed control for
the thermostatically controlled on-off switch that comes
with this fan. Use of a solid-state speed control can result
in a fire causing injury or death. 
Danger:Watch out for existing electrical wiring and other
utility wires or pipes when selecting a location for the fan.
Do not install the fan where there is electrical wiring in the
way. Select another location or have a qualified electrician
move the wiring to a different location. 
Danger:Make sure the circuit breaker powering the 
circuit on which the fan will operate is turned OFF before
wiring the thermostat. You can be shocked or electrocuted
if the breaker is not off. 
LACERATION HAZARDS 
Danger:This fan has an unguarded fan blade. Do not 
use in locations which are readily accessible to people or
animals. Do not let children play in an attic where this fan
has been installed. Contact with this fan while in operation
can result in injury or even death. 
Danger:Switch the power off at the service panel and
lock the service panel before servicing the motor. This fan
is thermostatically controlledÑit may start at any time if the
power is not switched off at the service panel. Contact
with the fan blades while the fan is operating can result in
serious injury.
Warning:This product has sharp metal edges that can
cut your hands. Wear canvas work gloves while handling
the fan during installation. OTHER HAZARDS
Danger:For general ventilating use only. Do not use to
exhaust hazardous or explosive materials or vapors. Use 
of this fan to exhaust hazardous, explosive or flammable
materials may result in a fire or explosion, causing injury 
or death.
CARBON MONOXIDE HAZARD
Danger:Carbon monoxide is a colorless, odorless gas
that can kill. Carbon monoxide may be drawn into the
house by the operation of this fan if your fuel-burning
equipment is not properly maintained and vented orif 
you lack adequate attic venting.
You should check the flue of your hot water heater and 
furnace to see that the pipes are intact and sealed.
Request an inspection from your fuel supplier (gas comp-
any or heating oil company) or from a municipal building
inspector if you have any questions about the safety of
your fuel-burning exhaust system.
You must also check the number and size of your attic
vents. A total of at least 5.0 square feet (for Model PC15)
or 3.9 square feet (for Model PC12) of unobstructed vent-
ing must be available for safe operation of this ventilator. If
you have less than the amount specified above, STOP and
install additional vents before proceeding.
TOOLS NEEDED
Electric drill, tape measure, hammer and nails, utility 
knife and pencil, jig or sabre saw, roofing nails, Phillips
screwdriver, adjustable wrench, wire cutter, work gloves
and safety glasses.
1. POSITIONING THE POWER ATTIC VENTILATOR ON
THE ROOF:Set the unit approximately in the center of
the roof close to the ridgeline (as shown below).
Position the ventilator so that the unit can only be 
seen from one side of the house.
POWERCOOL PLUS 15 / POWERCOOL PLUS 12 
POWER ATTIC VENTILATORS
INSTALLATION INSTRUCTIONS / WARRANTY 
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							2. DRILLING THE GUIDE HOLE:Measure the distance
to the ridgeline and to one end of the roof. Transfer
these exterior dimensions to inside the attic. Next,
locate a center position between two rafters (inside 
the attic) as near as possible to the outside measure-
ments. Drill a guide hole through the roof from inside
that is equal distance from the two rafters. Place a
marker through the roof for quick identification while 
on the roof.
3. CUTTING THE  HOLE:Draw a circle 14
1/2 in diameter
using the guidehole as the center. A template is provided
on the back of the carton for drawing the circle.
4. CUTTING THE HOLE IN THE ROOF:Using a sabre
saw, cut and remove all roof shingles (and deck) inside
the 14
1/2-diameter circle. Next, cut an extra 1 off the
top half of the hole (shingles only) to allow room for
placing and positioning the flange. Do not cut through
any rafters. Cutting a rafter may cause your roof to sag. 5. SECURING THE  BASE:Make sure the base flange
parallels the ridgeline of the roof. The embossed arrow
and word UP should be pointing toward the ridgeline.
Slip the upper half of the flange under the shingles. 
Center unit over the hole (as shown above). Attach
flange securely to roof using roofing nails around the
perimeter of the unit (underneath shingles at the top). 
A nonhardening caulk can be used as a seal between
the flange and shingles.
6. INSTALLING THE THERMOSTAT:Inside the attic,
separate the thermostat cover from the mounting plate.
Secure the plate to a rafter. See Step 7 to connect the
thermostat.
7. WIRING THE THERMOSTAT:Wire the thermostat 
as shown below. Attach your ground wire to the 
thermostat box.
POWERCOOL PLUS 15 / POWERCOOL PLUS 12 POWER ATTIC VENTILATORS INSTALLATION INSTRUCTIONS / WARRANTY 
WIRING THE THERMOSTAT
YOUR POWER SUPPLY
GROUND SCREW
BLACK
WHITE
CONNECTED AT THE FACTORYÐ 
DO NOT DISCONNECT
141/2inches 
						

							Danger:The electrical installation and wiring of this fan
must be done by a qualified electrician in accordance with
all local codes and standards, including fire-rated construc-
tion. Failure to do the installation properly can result in fire
or even death. 
NOTE: A few hours of operation without apparent 
problems does not necessarily imply that the installation 
is safe. 
Danger:Do not substitute a solid-state speed control for
the thermostatically controlled on-off switch that comes
with this fan. Use of a solid-state speed control can result
in a fire causing injury or death. 
Danger:Make sure the circuit breaker powering the circuit
on which the fan will operate is turned OFF before wiring
the thermostat. You can be shocked or electrocuted if the
breaker is not off. 
8. CONTROLLER OPERATION FOR THE COMBINATION
HUMIDISTAT/THERMOSTAT 
THERMOSTAT:The thermostat operates on a temp-
erature setting. Set the temperature dial to a 100 -110
degrees Fahrenheit setting. When the power ventilator is
operational, the fan should start automatically when the
attic temperature rises above the preset setting and cuts
off when the attic is cooled down to approximately 10%
below the thermostat setting.
HUMIDISTAT:The humidistat operates on a Òfan-offÓ
setting. Recommended setting is midway between 7
and 8. This equates to approximately 75% relative
humidity. The fan will start automatically when relative
humidity rises 4% to 8% above the setting, and will 
shut off when relative humidity reaches the setting. 
The control is adjustable to provide flexibility of use.
Ground to screw on box.
Danger:Switch the power off at the service panel and
lock the service panel before servicing the motor. This fan
is thermostatically controlledÑit may start at any time if the
power is not switched off at the service panel. Contact
with the fan blades while the fan is operating can result 
in serious injury.TEN-YEAR LIMITED WARRANTY
Limited, non-prorated and transferable
Who and What Is Covered and for How Long
Provided that the products covered by this warranty have
been installed in strict accordance with the Air Vent Inc. 
(Air Vent) written installation instructions and in accordance
with all local codes and standards, including those per-
taining to fire-rated construction, Air Vent warrants to the
original purchaser or a subsequent owner of the property,
that the parts described in the following sentence are free
from manufacturing defects for 10 (ten) years from the date
of purchase. This warranty covers the fan blade, motor,
thermostat/humidistat and housing.
Should any manufacturing defect occur during the 10 
(ten)-year period following date of purchase, Air Vent will
provide a replacement for that part deemed to be defective
(but not including labor costs incurred in removing the part
or installing the replacement part).
In the event of replacement according to the terms of this
warranty, the original warranty shall apply to the replace-
ment part and will extend for the balance of the warranty
period in effect at the time the part proved defective.
Replacement Plus Protection
The Air Vent products to which this warranty applies are
covered by Replacement Plus Protection for a period of 5
(five) years, provided that the products have been installed
in strict accordance with Air VentÕs written installation
instructions and in accordance with all local codes and
standards, including those pertaining to fire-rated 
construction. Under this warranty feature, Air Vent, at no
charge, will replace any part covered by this warranty and
found to be defective during the Replacement Plus 
period. (The Replacement Plus period begins when the
power vent installation is completed.) Air VentÕs maximum
liability under Replacement Plus will be equal to the 
reasonable cost of the replacement part, including labor to
remove the defective part and install the replacement part. 
In instances in which Air Vent, according to the terms of this
warranty, has agreed to pay the cost of labor required to
replace a defective part, Air Vent will provide reimbursement
only upon receipt of a copy of the contractorÕs invoice or
other written evidence of the completion of the work which
Air Vent, at its sole discretion, deems acceptable. 
Transferability
If there is a change in ownership, the warranty may be
transferred by the original purchaser of the power vent to
the new owner under the terms and conditions of this 
warranty. The warranty will then cover the period of 10
(ten) years following the purchase of the power vent. 
POWERCOOL PLUS 15 / POWERCOOL PLUS 12 POWER ATTIC VENTILATORS INSTALLATION INSTRUCTIONS / WARRANTY  
						

							If the warranty is transferred from the original purchaser 
to a new owner during the 5 (five)-year Replacement Plus
period, the remaining period of Replacement Plus
Protection will be available to the subsequent property
owner. At the end of the Replacement Plus period, 
the
warranty will cover 5 (five) years following the purchase
of
the power vent.
Limitations 
Air Vent shall not be liable for, and this warranty does not
apply to, any failure, defect or damage resulting from or
connected with misuse, abuse, neglect or improper han-
dling or storage, or installation not in strict adherence to 
Air VentÕs written instructions. Air Vent reserves the right to
discontinue or modify any of its products, including color,
and shall not be liable as a result of such discontinuance 
or modification. If Air Vent replaces any part under this
warranty, it may substitute parts designated by Air Vent 
to be of comparable quality or price range in the event 
the products initially installed have been discontinued 
or modified.
Other Conditions
This warranty is expressly in lieu of all other oral or written
warranties, liabilities or obligations of Air Vent. Pertinent
state law shall control for what period of time subsequent to
sale a consumer/homeowner may seek a remedy pursuant
to the implied warranty of merchantability or fitness for aparticular purpose. In no event shall Air Vent be liable for
consequential or incidental damages of any kind, including
any damage to the building, its contents or any persons
therein, resulting from the breach of any warranty set forth
herein. No field representative of Air Vent or any distributor
or dealer is authorized to make any change or modification
to this warranty. Some states do not allow limitations on or
the exclusion of incidental or consequential damages, so
the above exclusions may not apply to you.
This warranty gives you specific legal rights, and you may
also have other rights that vary from state to state.
What the Customer Must Do 
If you believe any part is defective, call 1-800-527-1924 for
Customer Service. If itÕs determined that parts need to be
returned to Air Vent, they must be shipped freight prepaid
to Air Vent, 3000 West Commerce Street, Dallas, Texas
75212. Air Vent shall then promptly inspect the claimed
defect before the furnishing of any replacement part is
approved, and Air Vent shall, within a reasonable time after
approval, provide the replacement part under the terms of
the warranty. This warranty is effective on all power vents
installed on or after August 1, 1995. 
Air Vent Inc.
3000 West Commerce
Dallas, TX 75212
POWERCOOL PLUS 15 / POWERCOOL PLUS 12 POWER ATTIC VENTILATORS INSTALLATION INSTRUCTIONS / WARRANTY 
3000 West Commerce, Dallas, TX 75212
309-692-6969  FAX: 1-800-635-7006
www.airvent.com
Form 17926-8/03 © 2003 Air Vent, Inc.
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