FANWALL® Permanent Magnet (PM) Motor
7% to 22% More Efficient Than Premium Induction Motors
FANWALL® PM Motor
The Highest Efficiency at Every Operating Point
The FANWALL® PM motor is a brushless permanent magnet
motor with innovative features that result in a device superior
in both efficiency and performance. In typical variable torque,
variable speed fan applications, FANWALL PM motors have
proven to be 7% to 22% more efficient when compared to
NEMA Premium® efficiency induction motors.
Variable air volume (VAV) systems operate at less than rated
speed much of the time, and many motors are oversized for
their application. Whereas the efficiency of a NEMA Premium
induction motor falls off dramatically as the speed and/or load
declines, FANWALL PM motors maintain their high efficiency
over a very wide operating range at lower than rated speeds
(see graphs at right). As shown in the example below, while the
operating motor power input (kW) savings of a FANWALL PM
motor versus a NEMA Premium induction motor is around 4% at
full load, it can be as much as 22% at 50% load! Percent savings in motor power input (kW) of a FANWALL PM motor versus a NEMA Premium induction motor at various fan speeds
along a system curve (5 HP motors, 16” housed plenum fan as
tested at the AMCA Certified Nortek Air Solutions laboratory)
Cost Competitive Permanent Magnet Motor Design
FANWALL PM motors share the inherent advantages of other
permanent magnet motors, including efficiency, power density,
compact size and synchronous speed. However, due to their
unique internal geometry, the FANWALL PM is able to focus the
flux of its permanent magnets in a manner that allows the use
of low cost ferrite magnets, versus expensive and increasingly
difficult to procure rare earth magnets. Material costs alone for
rare earth magnets can be more than 25 times that of ferrite
magnets. In addition, the axial flux path is more efficient,
allowing for bobbin windings with no end turns, producing a
superior thermal path for heat dissipation and requiring less
material than conventional radial flux path motors.
Because it is an electronically commutated motor, the FANWALL
PM motor requires a dedicated VFD. For a list of readily available,
compatible VFDs and flexible mounting configurations (at an
external control panel or at the FANWALL cube), contact your
local Nortek Air Solutions Representative.
Rapid Payback: 15 to 20 Years of Lower Power Bills
The cost of powering an electric motor over its useful life is
approximately 50 times the original cost to purchase that motor.
Hence, relatively small improvements in efficiency can yield
large savings in power bills over the life of an air handler. Large
improvements, like those experienced with FANWALL PM motors,
can result in a very rapid payback, typically 12 to 24 months, on
a small price premium versus NEMA Premium induction motors.
Thereafter, the savings drop to the bottom line of the building
operating budget for the life of the motor.
We welcome the opportunity to demonstrate the
revolutionary efficiency of FANWALL PM motors using
Energy Analysis for your next fan array application!
Contact your local Nortek Air Solutions Representative.
2
FANWALL TECHNOLOGY®
The Highest Efficiency Fan Array Motor
Motor efficiency - 3 hp, 2400 rpm fan application
Motor efficiency - 5 hp, 2400 rpm fan application
Motor efficiency - 7.5 hp, 2400 rpm fan application
Motor efficiency - 10 hp, 2400 rpm fan application
FANWALL TECHNOLOGY®
3
FANWALL® PM Motor Benefits
High Efficiency for Lower Energy Consumption and
Operating Costs
•
7% to 22% more efficient than NEMA Premium induction
motors
•
Maintain high efficiency over a very wide operating range at
lower than rated speeds
•
Incremental horsepower ratings between 2 and 12 hp (1/2
hp increments) allow you to closely match your system brake
horsepower requirement and avoid oversizing
•
Meet future IE4 efficiency standards today
Reliable
•
Ideal for projects targeting LEED certification
•
High efficiency motors run cooler for increased reliability and
motor life
•
The compact, bobbin-type electrical wind with no endturns improves reliability because less stress is placed on
the wire conductor during the winding operation versus a
conventional ‘stitch wound’ motor
•
Permanent magnets are mechanically AND adhesively
restrained to avoid magnet de-lamination as a cause for
magnet failures
®
Unique Design is Cost Competitive with NEMA
Premium Induction Motors
•
All ferrite magnet design, no expensive rare-earth magnets
•
More efficient axial flux path provides superior heat
dissipation using less material than radial flux path motors
Easy Application
•
Efficiency advantage applies to both constant volume and
VAV systems
•
Ferrite magnets, unlike rare-earth magnets, are not
susceptible to demagnetization at elevated temperatures
•
More compact than NEMA Premium induction motors, often
a full frame size smaller
•
Oversized bearings reduce wear for extended life
•
•
Standard NEMA frame sizes allow easy interchangeability
Pre-installed, long-life shaft grounding mechanism protects
bearings from damage due to electrical discharges
•
Compatible with readily available VFDs
•
UL listed
FANWALL systems offer the most flexible control selections to match your specific new construction or retrofit application
requirements. Selections include traditional external panel-mounted controls (right) and the Smart Cube configuration
(left) which places the VFD at the point of service to streamline field wiring and commissioning from a single keypad,
while dramatically reducing the external panel size.
4
FANWALL TECHNOLOGY®
FANWALL® PM Motor Features
Due to higher efficiency, motor runs cooler, extending motor
life. Additionally, due to the positioning of the windings, the
heat that is generated is more efficiently dissipated.
Axial orientation of field poles allows for use
of bobbin wound coils, eliminating the wasted
material and energy associated with end turns.
Stator
Unique conical air gap mating of stator and
rotor maximizes surface area, concentrating
flux, allowing for use of cost effective ferrite,
versus rare earth magnets.
Axial flux path allows for use of
grain oriented steel, minimizing eddy
current losses.
Use of permanent magnets
to produce magnetic field
in the rotor inherently saves
energy when compared
with the electrically induced
magnetic field in an
induction motor rotor.
Standard NEMA shaft dimensions.
Oversized bearings for longer life.
Interior permanent magnets
(IPM) further focus flux
while increasing saliency for
improved sensorless motor
control.
Dual conical-shaped rotors.
Standard NEMA mounting dimensions.
FANWALL TECHNOLOGY®
5
Specifications (2 to 6 Horsepower)
High Torque
High Speed
Rated Power (HP)
2.0
2.5
3.0
3.5
Efficiency at
93.0
Rated Point (%)
93.0
93.0
93.0
4.0
93.0
92.0
5.0
5.5
6.0
92.0
92.0
92.0
92.0
Rated Speed
(rpm)
1800 1800 1900 1800 2000 2300 1800 1950 1800 2250 1800 2150 1900 2400 2150 2250 2450 2250 2325
Max Speed
(rpm)
2700
2700
2700
2700
2700
2700
2700
2700
2700
2700
Rated Full Load
Amps
2.8
3.5
3.4
4.3
3.9
3.4
5.2
7.8
7.2
8.8
8.5
Rated Torque
(Nm)
7.9
9.9
9.4
11.9 10.7
9.3
13.9 12.8 15.8 12.7 15.8 13.3 16.9 13.4 16.6 17.4
16
19
18.4
Rated Torque
(pound foot)
5.8
7.3
6.9
8.8
6.9
10.3
Weight (lbs)
73
7.9
4.8
9.4
6
4.8
11.7
9.4
6.7
5.5
11.7
9.8
7.2
5.5
12.5
9.9
7.2
12.2 12.8 11.8 14.0 13.6
73
73
73
73
74
74
74
74
74
Efficiency at
93.0
Rated Point (%)
93.0
93.0
93.0
93.0
92.0
92.0
92.0
92.0
92.0
Rated Speed
(rpm)
1800
1800
1800
1800
1800
1800 2000 1800 1975 1800
1980
2160
Max Speed
(rpm)
2050
2050
2050
2050
2050
2250
2250
2250
Rated Full Load
Amps
2.1
2.6
3.2
3.8
4.5
5.4
6.9
7.2
7.4
Rated Torque
(Nm)
7.9
9.9
11.9
13.9
15.8
15.8 14.2 17.8 16.2 19.8
19.8
19.8
Rated Torque
(pound foot)
5.8
7.3
8.8
10.3
11.7
11.7 10.5 13.1 11.9 14.6
14.6
14.6
Weight (lbs)
73
73
73
73
73
74
74
2250
Operable Drive
Supply Voltage
440-480 VAC
Service Factor
1.15
Frame Size
182T or 184T
Enclosure
TEAO
Maximum Winding
Temperature
Ambient
Temperature
Ingress Protection
Mounting
Orientation
6
4.5
FANWALL TECHNOLOGY®
4.8
2250
6.2
74
130°C (266°F)
-10 to 40°C (14 to 104°F)
IP 50
Foot Mount - Horizontal or Vertical
5.5
74
74
Specifications (6 to 12 Horsepower)
Rated Power (HP)
Efficiency at
Rated Point (%)
High Torque
High Speed
Rated Speed
(rpm)
Max Speed
(rpm)
6.0
6.5
7.0
7.5
8.0
8.5
94.5
94.5
94.5
95.0
95.0
95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0
2500 2850
2500
2500 2500 2700 2500 2850 2500 2500 2500 2500 2500 2500 2500 2500
3600
3600
3600
3600
3600
9.0
9.5 10.0 10.5 11.0 11.5 12.0
3600 3600 3600 3600 3600 3600 3600 3600
Rated Full Load
Amps
7.9
7.0
8.5
9.1
Rated Torque
(Nm)
17.1 15.0
18.5
19.9 21.4 19.8 22.8 20.0 24.2 25.6 27.1 28.5 29.9 31.3 32.8 34.2
Rated Torque
(pound foot)
12.6 11.1
13.7
14.7 15.8 14.6 16.8 14.8 17.9 18.9 20.0 21.0 22.1 23.1 24.2 25.2
Weight (lbs)
132
132
132
132
132
132
Efficiency at
Rated Point (%)
95.0
95.0
95.0
95.0
95.0
95.0 95.0 95.0 95.0 95.0 95.0 95.0 95.0
Rated Speed
(rpm)
1800
1800 2000 1800
1800
Max Speed
(rpm)
2500
2500 2500 2500
2500
9.8
9.1
10.4
9.2
11.1 11.7 12.3 13.0 13.6 14.3 14.9 15.5
132
132
132
132
132
132
132
1800 2000 1800 1800 1800 1800 1900 2000 2050 2150
2500
2500 2500 2500 2500 2500 2500 2500 2500
Rated Full Load
Amps
7.4
8.0
8.6
9.2
9.8
Rated Torque
(Nm)
23.7
25.7 23.2 27.7
29.7
31.7 28.5 33.6 35.6 37.6 39.6 39.4 39.2 40.0 39.8
Rated Torque
(pound foot)
17.5
19.0 17.1 20.4
21.9
23.4 21.0 24.8 26.3 27.7 29.2 29.1 28.9 29.5 29.3
Weight (lbs)
134
7.5
134
134
134
9.1
134
10.4 11.0 11.6 12.2 12.4 12.7 13.1 13.5
134
Operable Drive
Supply Voltage
440-480 VAC
Service Factor
1.15
Frame Size
213T or 215T
Enclosure
TEAO
Maximum Winding
Temperature
Ambient
Temperature
Ingress Protection
Mounting
Orientation
134
134
134
134
134
134
134
130°C (266°F)
-25 to 40°C (-13 to 104°F)
IP 54
Foot Mount - Horizontal or Vertical
FANWALL TECHNOLOGY®
7
FANWALL TECHNOLOGY® Innovations
AMCA Certified Fan
Easy Fit and Low Vibration
Coplanar Silencer®
Designed and manufactured for
FANWALL® systems, all sizes are
AMCA certified at an industry
leading 72+% efficiency using
AMCA 210 — Arrangement “A”.
Standard features such as a variable
cube dimension, internal vibration
elimination and close attention to
balancing provide for efficient, quiet
operation without added measures.
Patented enclosure surrounding fan
and motor that to provides as much
as an 18 dB reduction in discharge
sound power, particularly in lower
octave bands.
Low Profile Backdraft Damper
Incremental Horsepower Motors
System Optimization Controls
Near zero system effect while the
fan is operating and less than ½ the
leak rate required for the highest
Class 1A rating of AMCA Standard
511 when the fan is idled.
Airflow over the motor fins within
the patented Coplanar Silencer
enclosure enables NEMA Premium,
Ceramic Bearing and Permanent
Magnet motors to be selected in ½
HP increments to closely match the
design fan brake HP requirement.
In addition to optimized selections
for constant and variable air volume
systems, FANWALL systems can
meet added requirements such as
redundancy, electrical sizing, space
constraints and specialized operating
parameters for mission critical projects.
Nortek Air Solutions, LLC, is a leader in innovative custom and engineered HVAC solutions for commercial, industrial and critical environments through our brands of
Governair, Huntair, Mammoth, Temtrol, Venmar CES, Ventrol and Webco. Nortek Air Solutions is a subsidiary of Nortek, Inc., a global diversified company whose many
market leading brands deliver broad capabilities and a wide array of innovative, technology-driven products and solutions for lifestyle improvements at home and at work.
FANWALL TECHNOLOGY® and FANWALL®, and are trademarks of Nortek Air Solutions, LLC. Products in this literature are covered by one or more of the patents listed on
www.nortekair.com/patents.
www.nortekair.com
©2015 Nortek Air Solutions, LLC
HUNT-FWT-SB-1G
May 2015