QuietCool CL-1500 User manual

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SEE // HEAR // FEEL
THE QUIETCOOL DIFFERENCE
THE NATURAL CHOICE FOR ENERGY SAVINGS!
OWNER’S GUIDE
ORIGINAL CLASSIC LINE

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GENERAL SAFETY INSTRUCTIONS
1. Read Instructions - All safety and operation instructions must be read.
2. Retain Instructions - The safety and operating instructions should be kept for future reference.
3. Heed Warnings - All warnings should be followed.
4. Follow Instructions - All installing and operating instructions should be followed.
5. Water - The QuietCool system should not be used near water. If you live in a very humid climate, be sure
to cover your damper box with insulation to reduce condensation.
6. Heat - The QuietCool system should be situated away from heat sources.
7. Damage Requiring Service - Only qualified service personnel should service the QuietCool system.
The user should not attempt to service the product.
CONTENTS
1. SYSTEM OVERVIEW......................................................1
1.1 Introduction.......................................................1
1.2 Features ..........................................................1
1.3 Benefits...........................................................2
1.4 System Venting Requirements .....................................2
2. INSTALLATION ..........................................................3
2.1 Installing QuietCool................................................3
3. WIRING .................................................................6
3.1 Single Speed Wiring................................................7
3.2 Two Speed Wiring ..................................................8
3.3 Double Motor Head Two Speed Wiring..............................10
4. SYSTEM OPERATING INSTRUCTIONS ...................................12
ORIGINAL CLASSIC LINE WARRANTY .....................................13 QC Manufacturing, Inc.
43352 Business Park Drive
Temecula, CA 92590
PH 951.325.6340
FX 951.325.6351
QuietCoolSystems.com

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1. SYSTEM OVERVIEW
1.1 INTRODUCTION
Congratulations on the purchase of your new QuietCool system!
The QuietCool whole house fans dominate the market in energy efficiency and quietness. Whole house fans
operate by pulling the cool air from outside your home, through the home, into your attic, and out your attic
vents. This accomplishes a cooling effect that can save you up to 90% off your A/C related energy costs
depending on where you live. The difference between QuietCool and a standard whole house fan is a mix
between it’s astounding energy efficiency and it’s jaw-dropping sound level. A standard whole house fan
operates around 75dB; that’s equivalent to a loud vacuum cleaner running! In contrast, our QuietCool whole
house fans average at just around 45 dB; that’s equivalent to quiet conversation!
The QuietCool system uses a cutting edge, patented design to get our sound levels down to a respectable
level. Our fans suspend in the attic and use an acoustical duct that connects to a ceiling box and grille. The
result is an easy installation and quiet operation.
Once the air outside is cooler than the indoor air, crack open a few windows, turn your QuietCool on, and
enjoy the hot air being sucked out of your home and pushed out of your attic with a nice, cool breeze. While
performing 15-22 complete air exchanges per hour, the QuietCool whole house fan system will force the hot
stale air out of the attic which will help your house stay cooler during the hotter hours of the next day!
1.2 Features
• Standard PSC Motor
• Patented Design
• Made in USA
• 10 Year Warranty

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1.3 Benefits
1.4 System Venting Requirements
VERY IMPORTANT! - 1 SQUARE FOOT OF NET FREE VENTING PER 750 CFM
REQUIRED VENTILATION: 1 SQ. FT FOR EACH 750 CFM
Vent Type Model Type Average Size Venting Sq. Ft.
Gable vent 12” x 19.5” 1.20
Dormer Vent 14” x 8” 0.70
Eave Vent Varioius Various
Ridge Vent Various Various
Soffit Vent Various Various

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2. INSTALLATION
2.1 Installing QuietCool
NOTE: Be sure to plug in your fan before
attempting to install to ensure that the fan
is operational. If the fan is not operational,
call the company that you purchased the fan
from and request an exchange.
Installing the QuietCool system is very easy. Simply follow the
steps given below:
1. Determine from down below in which areas you
would like to install your QuietCool fans. Go up into
the attic to mark the exact location for each fan.
Take the cardboard cut-out template and a small
screwdriver with you. Make sure the template fits between the framing.
The rough opening size varies depending on which model
of QuietCool fan you are installing:
QuietCool Fan Model Rough Opening
QC CL-1500 14-1/4” x 14-1/4”
QC CL-2250 14-1/4” x 18-1/4”
QC CL-3100 14-1/4” x 22-1/4”
QC CL-4700 14-1/4” x 30-1/4”
QC CL-6400 14-1/4” x 36-1/4”
2. When you have chosen your exact spot, place the
template on the spot and mark it at each corner by
pushing the screwdriver through at each corner to
make a hole so that you can find it from below.
Scan this QR code for
more information about
installation

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3. From below, place the cut-out template on the ceiling
at each location, making sure that you have at least
2 inches of clearance all around it. While holding the
template in place, mark its outline with a pencil.
NOTE: Repeat these steps at each location.
4. Using a drywall saw or similar device, cut out the hole
in the ceiling.
NOTE: Repeat these steps at each location.
5. Open and unpack each QuietCool fan. Take the
main assembly, which includes the motor housing,
damper box, and duct into the attic through the
crawl hole and move into position near the ceiling
cut-out hole.

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6. Hang the motor head from the rafters by fastening the
metal strapping that is attached to the motor heads
to the rafters with the wood screws. Make sure that
the power box on the motor head is at the very top.
Secure duct to damper box using three black sharp
screws. Make sure the duct has a gentle 90 degree
bend to help reduce noise level.
NOTE: Once all of the QuietCool fans are hung,
it’s time to go below and install the damper box
and ceiling grill at each intake location.
7. Look through the hole and make sure there are no
kinks or twists in the ducting. Pull the damper box
down through the hole in the ceiling. Fasten the
damper box to either the drywall or the joist in the
attic. While holding it in place, install a 1-3/8” drywall
screw through the drywall into the flange of damper
box on each side to temporarily hold the box in place.
Remove ceiling grille and screws from its packaging.
Center the grille over the ceiling box. Install the grille
with the white screws provided by screwing through
flange of the damper box. Some ceiling surfaces are
uneven and may cause a small gap to be present. This
can easily be caulked later if excessive.
NOTE: Repeat these steps at each location.
Always fasten the damper box to the joist in
the attic!
8. Return to the attic and go to each location. Using
the nylon straps and the long wood screws provided,
support the duct to the framing. This will stabilize
the entire assembly. Replace any insulation that was
removed. The installation of the fan is now complete.

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VERY IMPORTANT: Make sure the fan blade spins freely.
This is very important to system operation
NOTE: Local building codes and standards must be
adhered to in the installation of this unit.
AVOID BACK DRAFTS: Care should be taken to avoid
back drafting combustion appliances that are installed
in the conditioned space. It is strongly recommended
that combustion appliances NOT be installed in such a manner that they use room air for
combustion. Whole house fans are capable of pulling large quantities of air, from the home
and particularly if not enough windows are open. This could easily back draft gas appliances
located inside your home.
3. WIRING
NOTE: Wiring Diagrams are for examples only and wiring should be done
by an experienced electrician.
3.1. Single Speed Wiring
For wiring of the Classic QC CL-1500 Whole House Fan with one speed.
3.2. Two Speed Wiring
For wiring of the QC CL-2250, QC CL-3100, and QC CL-4700 Whole House
Fan with two speeds.
3.3. Two Speed Wiring
For wiring of the Classic QC CL-6400 Whole House Fan
with two speeds.
NOTE: QuietCool whole house fans can be used with the included power cord with a plug
outlet, but will only operate on high speed. The system will also work with a wireless
system using the power cord.

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3.1 Single Speed Wiring (for QC CL-1500)
1. For this installation, you will need (2) 2 wire Romex, and an 8 Hour Timer. Using the included wire nuts,
tie the black wire from the first 2 wire Romex from the power source to the black wire on the timer.
(see Figure 3.1A)
2. Using a wire nut, tie the black wire on the 2 wire Romex from the fan to the red wire on the timer.
3. Using a wire nut, tie the bare copper wires together with the green ground wire on the timer.
4. Using a wire nut, tie the white neutral wires from the Romex to the white neutral wire on the timer.
5. Begin wiring the fan by opening up the handy box. Take off the wire nuts within the handy box.
Unscrew the green ground wire. Detach the green ground wire from the power cord. Remove the
power cord. Re-attach the ground screw and wire to the handy box. Cut your green ground wire in half
and strip both sides. (see Figure 3.1B)
Power Source
Black Tied
Together with Black
Red Switch Leg
Single Speed Wiring
Tie Black and Red
Wires Together
Whole House Fan
Tie Ground & Bare
Copper Wires Together
14-2 Wire
8 HOUR
4 HOUR
2 HOUR
1 HOUR
HOLD
14-2 Wire
Tie White Common
Wires Together
Power Source
Black Tied
Together with Black
Red Switch Leg
Single Speed Wiring
Tie Black and Red
Wires Together
Whole House Fan
Tie Ground & Bare
Copper Wires Together
14-2 Wire
8 HOUR
4 HOUR
2 HOUR
1 HOUR
HOLD
14-2 Wire
Tie White Common
Wires Together
Figure 3.1A

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6. Feed the 2 wire Romex through the handy box. Using the included wire nuts, tie the black wires
together. Tie the white neutral wires together. Tie your bare copper wire and green ground wires
together.
7. Carefully reinstall the handy box cover.
3.2 Two Speed Wiring (for QC CL-2250/3100/4700)
1. For this installation, you will need a 2 and 3 wire Romex, an 8 Hour Timer, and a HIGH-LOW-OFF Switch.
Using the 3 wire Romex, attach the black wire to the bottom gold screw on the right of the switch for
high speed and attach the red wire to the top gold screw on the right for low speed. (see figure 3.2A)
2. With a piece of bare copper wire, attach it to the green ground screw on the switch. Using a wire nut,
tie all bare copper wires together with the green ground wire on the timer.
3. Using the included wire nuts, tie the black wire from the 2 wire power source to the black wire on the
timer. Tie the white neutral wire from the 2 wire power source to the white neutral wire on the timer
and the white neitral wire from the fan.
4. Attach the red leg wire from the timer to the gold screw on the right of the switch. Install the
switches and switch plate cover.
5. Begin wiring the fan by opening up the handy box. Take off the wire nuts within the handy box.
Unscrew the green ground wire from the handy box. Detach the green ground wire from the power
cord. Remove the power cord. Re-attach the ground screw and wire to the handy box. Cut your green
ground wire in half and strip both sides. (see Figure 3.2B)
Switch
Tie All Ground & Bare Copper Wires Together
All Black Wires Together
All White Common Wires Together
Whole House Fan
14-2 Wire Switch
Tie All Ground & Bare Copper Wires Together
All Black Wires Together
All White Common Wires Together
Whole House Fan
14-2 Wire
Figure 3.1B

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6. Feed the 2 wire Romex into the handy box. Using the included wire nuts, tie the black wires together
for high speed. Tie the red wires together for low speed. Tie the remaining white neutral wires
together. Tie your bare copper wires and green ground wires together.
7. Carefully reinstall the handy box cover.
Power Source
Black Tied
Together with Black
Red Switch Leg
High
Low
Two Speed Wiring
Tie Common White Wires
Together
Red Low Speed
Black High Speed
Whole House Fan
Tie All Ground & Bare
Copper Wires Together
14-2 Wire
8 HOUR
4 HOUR
2 HOUR
1 HOUR
HOLD
14-3 Wire
OFF
Power Source
Black Tied
Together with Black
Red Switch Leg
High
Low
Two Speed Wiring
Tie Common White Wires
Together
Red Low Speed
Black High Speed
Whole House Fan
Tie All Ground & Bare
Copper Wires Together
14-2 Wire
8 HOUR
4 HOUR
2 HOUR
1 HOUR
HOLD
14-3 Wire
OFF
Figure 3.2A
Tie All Ground & Bare Copper Wires Together
Red Wires Together
All Black Wires Together
Common Wires Together
Whole House Fan
14-3 Wire
Tie All Ground & Bare Copper Wires Together
Red Wires Together
All Black Wires Together
Common Wires Together
Whole House Fan
14-3 Wire
Figure 3.2B

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3.3 Two Speed Wiring (for QC CL-6400)
1. For this installation, you will need (3) 2 wire Romex, an 8 Hour Timer, and a Double Stack Single Pole
Switch.
2. Using the 2-wire Romex from the first fan motor head, attach the black wire to the top gold screw
on the right. Using the 2-wire Romex from the second fan motor head, attach the black wire to the
bottom gold screw on the right. (see Figure 3.3A)
3. Attach the red wire from the 8 Hour Timer to the bottom black screw on the switch.
4. Using the 2 wire Romex from your power source, tie the black wire to the black wire on the timer with
a wire nut.
5. Take a piece of bare copper wire and attach it to the green ground screw on the switch. Using a wire
nut, tie all copper wires together with the green ground wire from the timer. Tie all the white wires
together. Finish the installation of your switches and switch cover plate.
6. Start by wiring the first motor head. Open up the handy box and take off all the wire nuts. Unscrew the
green ground wire and detach the green ground wire from the power cord. Remove the power cord.
Reattch the green ground wire to the handy box. Cut your green ground wire in half and strip both
sides. (see Figure 3.3B)
7. Feed the 2 wire Romex into the handy box. Using the included wire nuts, tie the black wires together
for high speed. Tie the remaining white neutral wires together. Tie your bare copper wires and green
ground wires together. Carefully reinstall the handy box cover.
8. Move to the second motor head. Open up the handy box and take off all the wire nuts. Unscrew the
green ground wire and detach the green ground wire from the power cord. Remove the power cord.
Reattach the green ground wire to the handy box. Cut your green ground wire in half and strip both
sides. (see Figure 3.3B)
9. Feed the 2 wire Romex into the handy box. Using the included wire nuts, tie the black wires together
for high speed. Tie the remaining white neutral wires together. Tie your bare copper wires and green
ground wires together. Carefully reinstall the handy box cover.

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Power Source
Black Tied
Together with Black
Red Switch Leg
Off On
OnOff
Two Speed Wiring
Tie Common Wires Together
Black Wires
Whole House Fans
Tie All Ground & Bare
Copper Wires Together
14-2 Wire
8 HOUR
4 HOUR
2 HOUR
1 HOUR
HOLD
14-2 Wire 14-2 Wire
Power Source
Black Tied
Together with Black
Red Switch Leg
Off On
OnOff
Two Speed Wiring
Tie Common Wires Together
Black Wires
Whole House Fans
Tie All Ground & Bare
Copper Wires Together
14-2 Wire
8 HOUR
4 HOUR
2 HOUR
1 HOUR
HOLD
14-2 Wire 14-2 Wire
Figure 3.3A
Tie All Ground & Bare Copper Wires Together
Cap Red Wire
Black Wires Together
Common Wires Together
Whole House Fan
14-2 Wire
Tie All Ground & Bare Copper Wires Together
Cap Red Wire
Black Wires Together
Common Wires Together
Whole House Fan
14-2 Wire
Figure 3.3B

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4. SYSTEM OPERATING INSTRUCTIONS
4.1 When to Run the QuietCool Whole House Fans
Anytime it is cooler outside than the inside of your home, the system will work effectively. In the summer this
normally happens in the late afternoon to early evening, through to the next morning. We recommend running
your fan through the evening. If you have a multi-speed fan, you will get the best cooling effect when you turn
the fan on low after desired cooling occurs and let it run throughout the night.
4.2 Where to Start Cooling the Home
We recommend cooling the area where you are going to be spending the most time for the next few hours.
For example, in most family situations, the early evening is spent in the kitchen or family room area. Assuming
this to be true, this is where you would want to start the cooling process. Begin by opening a few windows in
the area you are going to be spending your time and turn on all of your QuietCool fans at once, for maximum
cooling. The cooler air outside will immediately begin to create a breeze in the home making you feel up to
10 degrees cooler, instantly. Opening windows too wide or opening too many windows will lessen the cooling
breeze you feel.
The breeze will flow through your home and make its way to each QuietCool you have in operation.
As it gets later in the evening, and even cooler outside, you can begin to open windows in other rooms of your
home, to prepare for bedtime. Then when it’s time for bed, you should close all the windows in your main living
space, but leave the windows in your occupied bedrooms open. This will provide each room with a cool breeze
as long as desired. If you are using an 8 hour timer, you can automate your fan and have it turn off when
you anticipate it being comfortable for sleeping. If you have a QuietCool installed in each bedroom as we
recommend, you can enjoy the breeze and your privacy with your door closed.
4.3 Indoor Air Quality
You will want to ventilate your home on a very regular basis. Many studies show that the air inside the homes
in the United States is more polluted than the air outside. This is generally true even in the smoggiest of
cities. Your QuietCool system can greatly reduce this problem by bringing in fresh air and exhausting stale
polluted air all year round.
If you have any trouble installing or operating your new QuietCool whole house fan, please visit our website
at www.QuietCoolSystems.com for support or call us at 951-325-6340.
Quiet Cool is proudly designed and built in California.

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10 YEAR LIMITED WARRANTY
QC ORIGINAL CLASSIC LINE WHOLE HOUSE FANS
A. Ten year coverage applies tothe QuietCool motor fan assembly. At our option we will repair
or replace any part of the assembly should it fail to operate during the first ten years from
the date of original purchase.
B.One year coverage for all other components including grills, housings, controls and
accessories furnished by QC Manufacturing Inc. At our option we will repair or replace
any part which fails as a result of defective material or workmanship during the first year
from the original date of purchase.
C. This warranty does not cover any of the following:
1. Incidental or consequential damage resulting from the operation of our equipment or
any malfunction thereof.
2. Cost of service calls to diagnose the cause of problems or the labor charge to
un-install any components.
3. Product failure or damage due tofaulty installation, abuse, misuse, unauthorized
alteration to factory specs, lack of maintenance, or transportation damage.
4. Shipping or postage for warranty claims.
D.To obtain service under this warranty, contact the dealer where you purchased the
equipment. If you are unable to find or reach your dealer, contact Customer Service
at QCManufacturing, Inc., at the address below.
E.Please register your product(s) for warranty on line at www.QuietCoolSystems.com
PRODUCT INFORMATION
QC Serial # QC Serial #
QC Serial # QC Serial #
Product Registration: Please register your product on line at www.QuietCoolSystems.com/support/registration Be sure to keep a copy of this warranty
form for future reference and submit proof of purchase with any warranty claim. QC Manufacturing, Inc. will not process any warranty claim without proof
of purchase from an authorized QuietCool dealer. Where consumer may have additional warranty rights in accordance with federal and state law,such
rights shall supersede those stated herein."
This warranty is the only warranty extended by QC Manufacturing, Inc. to purchasers or suppliers of our equipment. QC Manufacturing Inc.
disclaims all other warranties, express or implied, that arise by operation of the law.
Rev.4.15.14
QC Manufacturing Inc. extends this warranty to the original purchaser of the following QuietCool
Original Classic Line Models ---- QC CL-1500, QC CL-2250, QC CL-3100, QC CL-4700, and QC
CL-6400---- installed and used in a residence under normal conditions within the United States:

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43352 Business Park Drive, Temecula, CA 92590 // PH 951.325.6340 // QUIETCOOLSYSTEMS.COM
QuietCool is Proudly Designed and Built in California