ACME PVD EC Installation and operating instructions

Read and Save These Instructions Form 613083
For the PVD with hurricane construction that complies with
Florida Building Code including High Velocity Hurricane
Zones (HVHZ) see the ADDITIONAL INSTALLATION AND
MAINTENANCE INSTRUCTIONS on page 4.
GENERAL SAFETY INFORMATION
WARNING: ROTATING PARTS & ELECTRICAL SHOCK
HAZARD
Fans should be installed and serviced by qualied personnel
only. Improper installation can result in electric shock,
possible injury due to coming in contact with moving parts, as
well as other potential hazards.
1. Follow all local electrical and safety codes, as well as
National Electrical Code (NEC) and the National Fire
Protection Agency (NFPA), were applicable.
2. Disconnect electric power before working on unit (prior to
removal of guards or entry into access doors).
3. Follow proper lockout/tag out procedures to ensure the
unit cannot be energized while being installed or serviced.
4. Ensure the power cable does not kink or come in contact
with oil, grease, hot surfaces or chemicals. Ensure the
power source is compatible with the equipment.
5. Air that is allowed to move through a non-powered fan will
allow the propeller to rotate, which is referred to as wind-
milling. Impellers should be blocked to prevent rotation
when installing or servicing the fan.
RECEIVING AND INSPECTION
Immediately upon receipt of a shipment, carefully inspect
for damage and shortage. Turn the impeller by hand to see
that it turns freely and does not bind. If any damage and/or
shortage is detected or suspected, the carrier must be asked
to conduct an inspection. The consignee’s representative
should not accept a shipment without a notation on the
delivery receipt indicating items not delivered or the apparent
extent of damage.
When a shipment is opened and damage is found which was
not evident externally (concealed damage), it is mandatory
that the consignee request an immediate inspection by the
carrier. Report any damage to the carrier within 15 days.
Failure to report damage within the above time limit will result
in rejection of a claim.
HANDLING
When handling fans and their accessories, always use
equipment and methods that will not cause damage. Fans
should be lifted using slings and padding or spreaders to
avoid damage.
CAUTION! Always make sure that all lifting and handling
equipment and techniques conform to current safety
standards.
Avoid lifting fans in a way that will bend or distort fan parts.
Never pass slings or timbers through the orices of fan.
CAUTION! Do not lift by the fan hood. Fans with special
coatings or paints must be protected in handling to prevent
damage.
STORAGE
Fans are protected against damage during shipment. If
they cannot be installed and put into operation immediately
upon receipt certain precautions are necessary to prevent
deterioration during storage. Responsibility for integrity of
fans and accessories during storage must be assumed by the
user. The manufacturer will not be responsible for damage
during storage. These suggestions are provided solely as a
convenience to the user, who shall make his own decision as
to whether to use any or all of them.
INDOOR: The ideal storage environment for fans and
accessories is indoors, above grade, in a low humidity
atmosphere which is sealed to prevent the entry of blowing
dust, rain, or snow. Temperatures should be evenly maintained
at between 70°F and 105°F (wide temperature swings may
cause condensation and “sweating” of metal parts). Windows
should be covered to prevent temperature variations caused
by sunlight. Provide thermometers and humidity indicators at
several points and maintain the atmosphere at 40% relative
humidity, or lower.
It may be necessary to use trays of renewable desiccant or
portable dehumidier to remove moisture from the air in the
storage enclosure.
Thermostatically controlled portable heaters (vented to
outdoors) may be required to maintain even temperatures
inside the enclosure.
CAUTION! Provide re extinguishers, or re alarms, or
emergency response communication to protect building and
equipment against re damage. Be sure that building and
storage practices meet all local, state and federal re and
safety codes.
The following fans or accessories must be stored indoors, in
a clean dry atmosphere:
a. Propeller wall fans not in wall housings.
INSTALLATION & MAINTENANCE INSTRUCTIONS
Models PVD
To include optional su󰀩xes:
EC-Electronically Commutated Motor, H-Hurricane Rated, HEC-Hurricane Rated with EC Motor

b. Any fan is protected by a cardboard carton.
c. Motors dismounted from fans.
d. Spare wheels or propellers.
e. Belts, sheaves, bushings and other parts when not
mounted on fan.
f. Boxes, bags or cartons of hardware.
g. Curbs
h. Dampers
Remove any accumulations of dirt, water, ice or snow and
wipe dry before moving indoor storage. Allow cold parts to
reach room temperature to avoid “sweating” of metal parts.
Open boxes or cartons. Remove any accumulated moisture;
if necessary use portable electric heaters to dry parts and
packages. Leave coverings loose to permit air circulation and
to permit periodic inspection.
Rotate wheels or propellers by hand to distribute bearing
grease over the entire bearing surfaces.
Store at least 3 ½” o󰀨 the oor on wooden blocks covered
with moisture proof paper or polyethylene sheathing. Provide
aisles between parts and along all walls, to permit air
circulation and space for inspection.
OUTDOOR: Fans designed for outdoor use may be stored
outdoors, if absolutely necessary. The storage area should
be reasonably level and drained or ditched to prevent
accumulation of water. Fencing and lighting for security are
desirable. Roads or aisles for portable cranes and hauling
equipment are needed. Consider the use of drift fencing to
minimize accumulation of blowing snow or dirt.
The following fans may be stored outdoors, if dry indoor
storage space is not available:
a. Fans intended for outdoor use that are crated in
wood.
b. Wall fans installed in wall housings.
All fans must be supported on wooden blocks or timbers
above water or normal snow levels. Provide enough blocking
to prevent settling into soft ground. Fans should be set in
place using the directional arrow markings on the crate as a
guide.
Locate pieces far enough apart to permit air circulation,
sunlight, and space for periodic inspection. Place all parts
on their supports so that rain water will run o󰀨, or to minimize
water accumulation. Do not cover parts with plastic lm or
tarps - these cause condensation of moisture from the air
passing through heating and cooling cycles.
Fan wheels and propellers should be blocked to prevent
spinning caused by strong winds.
INSPECTION AND MAINTENANCE DURING
STORAGE
Inspect fans and accessories at least once per month,
while in storage. Log results of inspection and maintenance
performed. A typical log entry should include the following:
a. Date
b. Inspector’s Name
c. Name of Fan
d. Location
e. Condition of Paint or Coating
f. Is moisture present?
g. Is dirt accumulated?
h. Corrective steps taken?
If moisture or dirt accumulations are found on parts, the
source should be located and eliminated. Fans should be
rotated at each inspection by hand ten to fteen revolutions to
redistribute the motor and bearing lubricant.
If paint deterioration begins, consideration should be given
to touch-up or repainting. Fans with special coatings may
require special techniques for touch-up or repair.
Machined parts coated with rust preventive should be restored
to good condition promptly if signs of rust occur. The most
critical items are pulleys, shafts and bearing locking collars.
At the rst sign of rusting on any of the above parts, remove
the original rust preventive coating with petroleum solvent and
clean lint-free cloths. Polish any remaining rust from surfaces
with crocus cloth or ne emery paper and oil. Do not destroy
the continuity of the surfaces. Wipe clean with lint-free cloths
and recoat surfaces evenly and thoroughly with a corrosion
preventative.
REMOVING FROM STORAGE
As fans are removed from storage to be installed in their nal
location, they should be protected and maintained in similar
fashion, until the fan equipment goes into operation.
BEFORE INSTALLING CHECK FASTENERS
INSTALLATION
1. CAUTION! This unit has rotating parts and safety
precautions should be exercised during installation,
operation and maintenance.
2. WARNING! Do not use in hazardous environments
where the fan’s electrical system could provide ignition
to combustible or ammable materials, unless the unit is
specically built for hazardous environments.
3. WARNING! If gases, other than clean air, are to be
exhausted using the fan, then the user bears the
responsibility of determining that the fan is appropriate
and safe for the application.
4. If the fan manufacturers prefab curb is used, a ange is
provided for mounting the damper. Damper should be
installed before setting exhauster.
5. If damper box is being used, assemble box and mount in
curb before setting exhauster. Damper may be installed
at this time if desired. Damper should be fastened to the
bottom of the damper box, curb anges or nailing strips in
curb.
6. Impeller Adjustment: Turn centrifugal impeller by hand to
make sure it rotates freely. If impeller hits orice, adjust
by loosening set screw in impeller hub and move impeller
back on motor shaft.
2
WARNING! Before installing and before starting, check
all fasteners/set screws for tightness, particularly in the
propeller/wheel hub, and fan shafts. Turn the propeller/
wheel by hand to make sure it rotates freely and that the
blades do not strike the orice. Failure to do so voids
the warranty as fasteners/set screws may come loose
in transit. See table recommended tightening torque
located in Maintenance section.

7. CAUTION! Guards must be installed when fan is within
reach of personnel or within eight (8) feet (2.5 m) of
working level or when deemed advisable for safety.
8. Remove the motor compartment cover (small hood).
CAUTION! Before proceeding, make sure electrical
service to fan is locked in “OFF” position. Run wires
through the internal wiring post to the motor, to disconnect
switch if used. WARNING! The wiring post is sealed to the
curb cap with a large washer and sealing gasket. If the
wiring post is loosened, the seal may be broken, thereby
creating a possible water leak.
9. All wiring should be in accordance with local ordinances
and the National Electric Code.
FOR EC Motor Wiring
Go to pages 5 through 11 on how to wire and setup a EC
motor.
10. WARNING! Check voltage being supplied to the fan to
see that it corresponds with the motor nameplate voltage;
high or low voltage can seriously damage the motor. On
multi-voltage motors, check motor terminal connections to
make sure motor is internally connected for voltage being
supplied. Motor wiring diagram is located on the side of
the motor or in the motor wiring compartment for ECM
motors go to back of this form for wiring diagrams. Extra
care should be taken when wiring two speed motors since
improper connections will damage motor and void motor
warranty.
11. Apply power momentarily and compare the rotation of
the impeller with the directional arrow on fan. WHEEL
ROTATION IS CLOCKWISE AS VIEWED FROM TOP
OF FAN. WARNING! Operation in the wrong direction
will deliver air but will overload the motor to the extent
of blowing fuses, overload protection and could seriously
damage the motor. In the case of single phase motors, the
reversing instructions will appear on the wiring diagram,
located either in the motor wiring compartment or on the
outside of the motor housing.
12. Using a minimum of eight (8) lag bolts - two (2) on
each side near corners, securely fasten fan to curb,
replace small hood and fasten all bolts securely. The
fan should rest on the curb as level as possible.
Over tightening the bolts can cause the inlet cap to distort
and push the inlet cone into the wheel.
MAINTENANCE
1. Under normal usage, no spare parts are recommended
for one year of operation. Recommended spare parts are
shown on page 4.
2. CAUTION! Before proceeding, make sure electrical
service to fan is locked in “OFF” position.
WINDMILLING: Even when the power is locked out, fans
may cause injury or damage if the impeller is subject to
“windmilling” which is the turning of the impeller and drive
components due to a draft in the system. To guard against
this hazard, the impeller should be secured to physically
restrict rotational movement.
3. Motor bearings are pre-lubricated. Consult information
printed on the motor for lubrication instructions.
4. If motor requires replacement, one comparable to the
original with the same service factor and enclosure must
be used.
SET SCREW TIGHTENING SCHEDULE
1. Before initial operation of the fan, tighten set screws
according to the procedure outlined below.
2. After 500 operating hours or three months, whichever
comes rst, tighten set screws to the full recommended
torque.
3. At least once a year, tighten set screws to the full
recommended torque.
PROCEDURE FOR TIGHTENING SET SCREWS IN
BEARINGS AND HUBS
One Set Screw Application
Using a torque wrench, tighten the set screw to the torque
recommended in Table 1.
Two Set Screw Application
1. Using a torque wrench, tighten one set screw to half of the
torque recommended in Table 1.
2. Tighten the second set screw to the full recommended
torque.
3. Tighten the rst set screw to the full recommended torque.
VARIABLE FREQUENCY
DRIVES AND MOTORS
There are occasions when a Variable Frequency Drive (VFD)
will cause poor motor performance and possible damage.
To avoid these problems, the Company recommends the
following:
1. Select compatible motor and VFD inverter; if possible,
the motor and the inverter should be from the same
manufacturer or at least the inverter selected should be
recommended by the motor manufacturer.
2. A motor shaft grounding system should be used to prevent
motor bearing damage from eddy currents.
NOTE: The Company will not honor motor warranty claims
if the customer fails to follow these recommendations.
3
Set Screw Diameter Torque (in-lbs)
#10 35
1/4 80
5/16 126
3/8 240
7/16 384
1/2 744
9/16 1080
5/8 1500
3/4 2580
7/8 3600
1 5400
Table 1. Recommended Tightening Torque
for Set Screws

ADDITIONAL INSTALLATION AND MAINTENANCE INSTRUCTIONS
for the PVH Model with hurricane construction that complies with
Florida Building Code including High Velocity Hurricane Zones (HVHZ)
This product has been issued a Notice of Acceptance
(NOA) by Miami-Dade County, Florida. The full document
can be found on Miami-Dade County, Florida website
www.miamidade.gov/building/pc-search_app.asp. This product is
marked on its label by a statement “Miami-Dade County Product
Control Approved”.
This product shall be available for inspection at the job site at the
request of the Building O󰀩cial.
This product may be installed on a wooden, metal or concrete deck
following the requirements shown in Figure 1. The matching curb of
Model CH for this particular use must be used.
It is the installers responsibility to follow the installation instructions
including a check that all fasteners in the outer shell of the product
have been checked and tightened.
If the fan has to be replaced, the curb for attachment of the fan to the
deck must also be replaced. The matching curb of Model CH for this
particular use must be used.
NOTE: Hurricane curbs have a tighter t than standard curbs.
Note: Curb mounting hardware provided by others.
Figure 1 - Installation of the product complying with Florida Building Code including High Velocity Hurricane Zones (HVHZ) on a
wooden, metal or concrete deck.
4

Please read and save these instructions for future reference. Read
carefully before attempting to assemble, install, operate or maintain
the product described. Protect yourself and others by observing all
safety information. Failure to comply with instructions could result
in personal injury and/or property damage!
The EBSM Motor is an integrated industrial motor and speed
control that is simple and easy to install.
General Safety Information
This equipment contains voltages that may be as high as 1000 volts!
Electrical shock can cause serious or fatal injury. Only qualied
personnel should attempt the start-up procedure or troubleshoot
this equipment.
This equipment may be connected to other machines that have
rotating parts or parts that are driven by this equipment. Improper
use can cause serious or fatal injury. Only qualied personnel should
attempt the start-up procedure or troubleshoot this equipment.
WARNING: Do not touch any circuit board, power device or
electrical connection before you rst ensure that power has been
disconnected. Electrical shock can cause serious or fatal injury.
Only qualied personnel should attempt the installation, operation
and maintenance of this equipment.
WARNING: Disconnect all electrical power from the motor windings
and accessory devices before disassembly of the motor. Electrical
shock can cause serious or fatal injury.
WARNING: Be sure the system is properly grounded before
applying power. Do not apply AC power before you ensure that
all grounding instructions have been followed. Electrical shock can
cause serious or fatal injury. National Electrical Code and Local
codes must be carefully followed.
WARNING: Avoid extended exposure to machinery with high noise
levels. Be sure to wear ear protective devices to reduce harmful
e󰀨ects to your hearing.
WARNING: Surface temperatures of motor may reach temperatures
which can cause discomfort or injury to personnel accidentally
coming into contact with hot surfaces. When installing, protection
should be provided by the user to protect against accidental contact
with hot surfaces. Failure to observe this precaution could result in
bodily injury.
WARNING: Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power source can
result in re, shock or serious injury.
WARNING: Motors that are to be used in ammable and/or
explosive atmospheres must display the CSA listed logo. Specic
service conditions for these motors are dened in NFPA 70 (NEC)
Article 500.
WARNING: Pacemaker danger – Magnetic and electromagnetic
elds in the vicinity of current carrying conductors and permanent
magnet motors can result in a serious health hazard to persons
with cardiac pacemakers, metal implants, and hearing aids. To
avoid risk, stay way from the area surrounding a permanent magnet
motor.
WARNING: Do not remove cover for at least ve (5) minutes
after AC power is disconnected to allow capacitors to discharge.
Dangerous voltages are present inside the equipment. Electrical
shock can cause serious or fatal injury.
WARNING: Motor circuit may have high voltage present whenever
AC power is applied, even when motor is not rotating. Electrical
shock can cause serious or fatal injury.
CAUTION: Disconnect motor leads (T1, T2 and T3) from control
before you perform a dielectric withstand (insulation) test on the
motor. Failure to disconnect motor from the control will result
in extensive damage to the control. The control is tested at the
factory for high voltage / leakage resistance as part of Underwriter
Laboratory requirements.
CAUTION: Suitable for use on a circuit capable of delivering not
more than 5000 RMS symmetrical short circuit amperes at rated
voltage.
CAUTION: Connection of power 115 or 230VAC power to “N” will
damage the unit.
1. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC) and the National Fire
Protection Agency (NFPA), where applicable. Follow the
Canadian Electric Code (CEC) in Canada.
2. The rotation of the fan wheel is critical. It must be free to
rotate without striking or rubbing any stationary objects.
3. Motor must be securely and adequately grounded.
4. Do not spin fan wheel faster than max cataloged fan
RPM. Adjustments to fan speed signicantly e󰀨ects motor
load. If the fan RPM is changed, the motor current should
be checked to make sure it is not exceeding the motor
nameplate amps.
5. Do not allow the power or speed control cables to kink or
come in contact with oil, grease, hot surfaces or chemicals.
If damaged, discontinue use immediately and have cord
replaced.
6. Verify that the power source is compatible with the
equipment. Branch protection and disconnect means must
be provided if required.
7. Never open access doors to a duct while the fan is running.
Features
Soft Start
All EBSM motors use soft start motor technology. They will reliably
start at any speed setting.
Overload
If the motor becomes overloaded, the control begins a countdown
that creates an “Overload fault” when it ends.
Locked Rotor Protection
If a locked rotor condition occurs, the motor will automatically shut
itself down. Restart is attempted (up to 3 times). If the 3rd attempt is
unsuccessful, the motor will not attempt restart until power is cycled
(turned “O󰀨” then “On”).
This section applies only to Baldor EC Motor 2 HP
5

Thermal Protection
Motor software limits motor current to prevent an overheating
condition. If motor temperature increases above the protection
limit, a thermal switch provides nal protection to prevent a re.
The thermal switch will reset when motor temperature decreases
to an acceptable level.
Built-in Protection
Built-in over current, over voltage and under voltage protection.
RPM measurement
Motor RPM can be measured by removing the cooling fan cover
on the back of the motor and using a optical tachometer or contact.
Replace cooling fan cover when completed to prevent motor from
over heating.
Reversible rotation
The motor shaft rotation is set at factory and no adjustments are
needed. If a replacement motor is ordered make sure the motor
rotation matches the fans rotations. Rotation can be changed by
swapping any of the Red, Black and Blue wires connecting the
control board to the motor at terminals T1, T2 and T3.
Installation
1. Wire motor in accordance with local codes. The motor can
be mounted by the feet or face. See Figure 2 for mounting
hole locations. Verify fasteners holding motor to fan are
properly secured.
2. Verify fan wheel is properly secured on motor shaft.
3. Connect the motor to AC power and ground. See Figure 3.
Use appropriate strain relief (not provided).
Figure 4 208-240VAC Power Connection to Motor
AC power
Connect it to the motor control as follows:
a. Connect L1 (White) to L1.
b. Connect L2 (Black) to L2.
c. Connect Ground to
Use only Copper Wire for all wiring.
Green
White
230VAC Input Power
White
Green Black
Black
P10
pin 1
Caution: Connection of either line of 208-240VAC
power to “N” will damage the unit.
FIGURE 3 208-240VAC Power Connection to Motor
Figure 1 Mount the Motor
FIGURE 2 Mount the Motor
208-230VAC Input Power
6

Table 1 Single Phase Power Requirements
Nominal AC Voltage Minimum AC Volts Maximum AC Volts HP Input ARMS Output ARMS
230 200 264 2.0 11.05 5.29
Note: Internally, the Speed Controller provides 240VAC 3 phase at 8kHz switching frequency to the motor.
Speed Dial Wiring Diagrams
Mounted Speed Dial – (See Figure 4) Standard potentiometer
speed dial is mounted and wired at the factory.
For eld replacement: Connect the Speed Control Potentiometer to
the motor control as follows:
a. Connect one end of 10K Potentiometer to P10-1 (24VDC).
b. Connect center (wiper) of Potentiometer to P10-2 (Analog
Input)
c. Connect other end of Potentiometer to P10-3 (DGND).
Remote Speed Dial** – (See Figure 5 & 5A) Factory mounted
Molex receptacle allows a quick connection to remote potentiometer
speed dial. The potentiometer dial can be mounted up to 100 ft
from fan using additional wire by others.*** Speed B on box is not
used for single speed selection and will not have a dial.
Dual Speed Dial** – (See Figure 5 & 5B) Factory mounted Molex
receptacle that allows a quick connection to Dual Potentiometer
Speed Dial. The supplied unmounted toggle switch will select the
Low (LO) or High (HI) speed on the speed controllers based on the
dial settings. Toggle switch and mounting plate t in a standard
gang box and wired to Dual Potentiometer Speed Dial. The speed
dial can be mounted up to 100 ft from fan using additional wire by
others.***
Building Control 0-10VDC Wire Kit – (See Figure 5 & 5C)
Factory mounted Molex receptacle that allows a quick connection
to supplied 2 wire connector (wires are 3” long).
**Disconnects and Speed Dials are available as mounted on
certain fan models and will be wired to motor, for more information
see descriptions on submittals for these items weather they are
mounted, not mounted or not available
*** For extended wiring up to 100 Feet you will need (1) Receptacle
Molex 3 1396-R4 with 3 Pin Female Molex 02-09-1119 and (1) Plug
Molex 3 Pin 1396-P1 with Pin Male Molex 02-09-2118 not provided.
1 2 3 45 6 7 8 9 10
12V
ANG1
DGND
ANG2
DGND
LGX1 LGX2 LGX3 LGX4
DGND
White
Red
Black
L2
Motor Mounted Potentiometer
(Standard)
L1 N
Black
Green -
Ground
White
Line Voltage
208-230 VAC
Single Phase
Motor Control Box
Black*
White
Red
12V
ANG1
DGND
ANG2
DGND
LGX1 LGX2 LGX3 LGX4
DGND
1098765
4
321
Remote/Dual Potentiometer
or Building Supplied Controller
* - Not Used with Building Supplied Controllers
White
Green -
Ground
Black
N
L1
L2
Motor Control Box
Line Voltage
208-230 VAC
Single Phase
FIGURE 4 FIGURE 5
Remote Potentiometer
A
Variable
1
2
3
4
5 6
7
8
9
10 1
2
3
4
5 6
7
8
9
10
Speed
B
Potentiometers
mounted up to
100 ft from fan.
FIGURE 5A
7

Operation
Operating temperature range is: 14°F to 104°F (–10°C to 40°C)
The EBSM motor o󰀨ers various control options. Follow the correct
wiring diagram based on the control option desired.
1. Energize motor and check for proper rotation. Rotation
should match wheel rotation as noted in fans instruction
manual and rotation arrow located on fan.
2. Adjust motor speed to verify the proper motor speed
controller functionality.
Troubleshooting
Mounted Speed Control Dial
1. Check voltage to ensure the motor is receiving the correct
control input.
2. Check voltage at the remote dial. 24VAC should be present
across the 24V and COM terminals. 0-10VDC should be
present across the 0-10V and COM terminals.
3. Verify all of the connections inside the fan and make certain
that they are secure.
Fault Indication
A red LED on the control board provides fault indication. During a
fault, this LED will blink a specic number of times to identify the
fault that has occurred.
Table 2 describes these fault indications.
Table 2 Fault Indications
No. Blinks Indicated Fault
2 Over current
3 Over voltage
4 Under voltage
5 Communication Error
6 Sync Loss
7 Spin Fault
8 3 Sec/60 sec overload
9 Motor over-temperature
Maintenance
EBSM motors use brushless technology with sealed bearings so
no maintenance is required other than keeping any accumulated
debris from collecting on the motor.
Building Supplied Controller Harness
White - Common
Red - 0-10 VDC
Dual Speed Potentiometer
Speed Select Control
A
Black
Red
White Wired in
Field
B
Red to Red
White to White
Black to Black
Potentiometers and
speed selector can
be mounted up to
100 ft from fan.
A
Variable
1
2
3
4
5 6
7
8
9
10 1
2
3
4
5 6
7
8
9
10
Speed
B
FIGURE 5B
FIGURE 5C
8

Page 9
This section applies only to Nidec (US Motors) EC Motor
NOTE: The controller must be powered up before or at the
same time as power is supplied to the motor.
Mounted Speed Dial** (Figure 6) – The Perfect Speed control box
interface allows direct control of the motor by turning the onboard
speed dial located to the right of the digital display.
Optional Speed Controller (See Figure 7)
Remote Speed Dial** – (See Figure 7 and 7A) When selected with
this option the fan will come with a control cable and quick connect
Molex plug that can be plugged into the Molex plug on the single
speed potentiometer box***. Set blue speed dial on PerfectSpeed
controller to zero (turn left). Speed B on box is not used for single
speed selection and will not have a dial. The motor will shut o󰀨
between 0-1.9V.
Two Speed Dial** – (See Figure 7 & 7B) When selected with this
option the fan will come with a control cable and quick connect
Molex plug that can be plugged into the Molex plug on dual speed
dial. The supplied unmounted toggle switch will select the Low
(LO) or High (HI) speed on the speed controllers based on the dial
settings. The motor will shut o󰀨 between 0-1.9v.
Building Control 0-10VDC Wire Kit (See Figure 7 & 7C) Factory
mounted Molex receptacle that allows a quick connection to
supplied 2 wire connector (wires are 3” long).
NOTE: FOR OPTIONAL SPEED CONTROL SET THE BLUE
SPEED DIAL TO 0%.
More information on US Motors perfect speed interface can be
found at: http://www.usmotors.com/Our-Products/ECM-Motors
FIGURE 6 Mounted Speed Dial
** Disconnects and Speed Dials are available as mounted on certain fan models and will be wired to motor as shown in Figure 6 for more
information see descriptions on submittals for these items weather they are mounted, not mounted or not available.
*** For extended wiring up to 100 Feet you will need (1) Receptacle Molex 3 1396-R4 with 3 Pin Female Molex 02-09-1119 and (1) Plug
Molex 3 Pin 1396-P1 with Pin Male Molex 02-09-2118 not provided.

Page 10
FIGURE 7
PerfectSpeed®
Control Cable
FIGURE 7A
Remote Potentiometer
A
Variable
1
2
3
4
5 6
7
8
9
10 1
2
3
4
5 6
7
8
9
10
Speed
B
Potentiometers and/or
speed select switch
mounted up to
100 ft from fan.