Greenheck Fan Mixed Flow Fans Belt And Direct Drive Qei Users Manual

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Mixed Flow Fans
Belt and Direct Drive
Models QEI-L, QEI, QEID

May

2012

Quiet & Efficient, Inline
Mixed Flow Fans

Model QEI-L – Belt Drive

Mixed flow inline fans can be used for supply, exhaust,
or return air installations. Our patented design excels
in commercial applications where low sound is critical.
In addition, Greenheck’s mixed flow fans are more
efficient than comparably sized tubular centrifugal
and vane axial fans, thus reducing the required motor
horsepower and lowering operating costs.

•	 11 sizes available (12 thru 36)
•	 Volume Range:	 700 - 40,000 cfm 	
	
(1190 - 67,960 m3/hr)
•	 Static Pressure: Up to 5 in. wg (1245 Pa)

Greenheck’s mixed flow fans are the quietest tubular
inline fans in the industry!
•	 Performance as cataloged is assured. All sizes are
licensed to bear the AMCA Certified Sound (both
inlet and outlet) and Air Performance Seal.
UL/cUL Listed

QEI-L

QEI-I/II

QEID

705 - Electrical










Emergency Smoke Evacuation
762 - Restaurant Grease Exhaust

•	 All sizes are tested before they leave the factory to
ensure trouble-free operation at the jobsite.
•	 Compact size and a “Universal Mounting System”
make tight space considerations and last minute
mounting changes easy to handle at the jobsite.

Model QEI-I/II – Belt Drive
•	 17 sizes available (9 thru 60)
•	 Two classes of construction
•	 Volume Range:	 500 - 115,000 cfm	
	
(850 - 195,386 m3/hr)
•	 Static Pressure 	
	 Up to 5 in. wg (1245 Pa) Class I
	 Up to 8.5 in. wg (2120 Pa) Class II

•	 The belt drive models use air handling quality
bearings that are 100% inspected for swivel torque,
noise levels, and bore tolerances.
•	 These products are subjected to extensive life cycle
testing, assuring many years of reliable performance.

Typical Mixed Flow Applications:

Recommended for any ventilation application that
requires low sound and high efficiency, such as office
buildings, parking garages, concert halls, libraries,
and educational facilities.
Greenheck Fan Corporation certifies
that the model QEI-L, QEI-I/II and
QEID shown herein are licensed to
bear the AMCA Seal. The ratings
shown are based on tests and
procedures performed in accordance
with AMCA Publication 211 and
AMCA Publication 311 and comply
with the requirements of the AMCA
Certified Ratings Program.
For QEID performance showing AMCA licensed data
for sound and air performance, please refer to the
QEID Sound and Air Performance Supplement found
on our website at www.greenheck.com.

See page 10 for details.
2

Model QEID – Direct Drive
•	 15 sizes available (12 thru 54)
•	 50 - 100% wheel widths
•	 Volume Range:	 800 - 83,000 cfm 	
	
(1,360 - 141,000 m3/hr)
•	 Static Pressure: Up to 10.5 in. wg (2370 Pa)

Patented (QEI/QEID): USA Patent No. 7048499
China (P.R.) Patent No. CN1294361C
Mexico Patent No. 243465

Standard Construction
Housing

Slip-Fit Duct Connection (QEI-I/II & QEID)

Tubular housings are constructed of welded steel to
eliminate air leakage. Integral straightening vanes are
constructed from steel and welded into place.

Inlets and outlets are designed with extended collars
for slip-fit duct connections as standard. QEI-L is
flanged as standard. Companion flanges can be
ordered for slip fit connections.

Wheel – Mixed Flow

Adjustable Motor Bases (Belt Drive)

Fabricated wheels are constructed from steel. The
blade profiles are angled and contoured for the most
efficient and quiet performance.

Rigid, heavy-gauge steel motor bases are welded to
the fan housing and include heavy-duty adjustment
screws for belt tensioning.

Bearings (Belt Drive)

Extended Lube Lines

Standard bearings are premium air handling quality,
grease lubricated, self-aligning, ball or roller type.  
Bearings are selected with a basic rating fatigue life
L10 per ABMA standards, in excess of 80,000 hours
(L50 at 400,000 hours) at the maximum operating
speed for the QEI-I/II and QEI-L in the horizontal
position. The QEI-L bearings are selected with a
basic rating fatigue life L10 in excess of 50,000 hours
(L50 at 250,000 hours) in vertical position.

Belt drive units have nylon lubrication lines with
grease fittings that allow bearing lubrication without
disassembling the fan. Grease fittings are mounted
on the outside of the fan housing. Direct drive
units have extended lubrication lines for the motor
bearings, if required. Smaller frame sized motors are
typically sealed and not lubricatable.

Permatector™ Coating

Bolted Access Door

Greenheck’s Permatector coating is a thermosetting
polyester urethane, electrostatically applied to
provide uniform thickness and a clean appearance.
Permatector coatings also provide excellent
corrosion characteristics for general applications,
both indoor and outdoor. For corrosive environments
(ie. coastal), see page 9 for information on our zincrich basecoat technology.

A bolted access door provides an opening through
the fan housing for cleaning or visual inspection of
the wheel. A hinged access door is available as an
accessory.

Belt Guard (Belt Drive)
A totally enclosed belt guard provides protection
from rotating pulleys and belts. Belt guards meet
OSHA Standards.

Model Number Nomenclature

The model number code provides a numbering system designed to identify the fan model,
size and horsepower.

QEI D* - 36 - I - 70 - A 30
D = Direct Drive
Fan Size

9, 12, 15, 16, 18, 20,
22, 24, 27, 30, 33, 36,
40, 44, 49, 54, 60
Belt Drive available in sizes 9 through 60
Direct Drive available in sizes 12 through 54

Construction
L = Low Pressure
I = Class I
II = Class II
Low Pressure available in sizes 12 through 36

Motor Horsepower
4
3
5
7
10
15
20

= ¼
= 3
= ½
= ¾
= 1
= 1½
= 2

RPM

A = 1770
B = 1170

30
50
75
100
150
200
250

C = 870
F = 690

= 3
= 5
= 7½
= 10
= 15
= 20
= 25

300
400
500
600
750
1000
1250

J = 1425
K = 950

= 30
= 40
= 50
= 60
= 75
= 100
= 125

M = 3600
R = 2900

Percent Wheel Width

50 through 100

* Blue text is specific to direct drive model QEID only

3

Value Added Features
Quality Assurance Test
Before shipment, all Greenheck mixed flow fans are tested at the design speed after final assembly.
QEI-L fans are checked for amp draw and the levels are recorded. QEI-I/II and QEID fans are
subjected to a complete vibration analysis. The maximum allowable vibration on a QEI-I/II at the fan
bearings is 0.15 in/sec. peak velocity for the specified RPM. QEID maximum vibration is 0.08 in/sec.
peak velocity on the fan housing for the specified RPM. A record
of the vibration test result is available upon request.
By performing the vibration test, we are able to provide more than
wheel balancing, it is also a diagnostic tool for finding potential
problems. A defective bearing or motor, bent shaft or misaligned
sheaves may cause excessive vibration. A
complete vibration test will uncover
these problems before the fan leaves
the factory.

Electrostatic Powder Coatings
Powder coatings offer a uniform, durable and high-quality finish.
Standard powder coating is a one-coat process applied over
a phosphatized surface that generally meets or exceeds the
corrosion resistance of a comparable wet paint.
Greenheck offers a number
of in-house coatings applied
via “electrostatic powder.” The
standard coating, Permatector™,
is excellent for indoor or outdoor
applications and is resistance to
many common chemicals. Consult
Greenheck’s Product Application
Guide, Performance Coatings for
Ventilation Products, for a complete
listing of coatings and a relative
resistance chart. For corrosive environments (i.e. coastal), see page 9
for information on our zinc-rich basecoat technology.

Maintenance / Serviceable Construction Advantages
The following value added features are  incorporated into the design to allow for quick and
easy field service.
QEI-L and QEI service advantages:
•	 B
 earing lubrication is performed through extended grease fittings located on the
outside of the fan housing.
•	 T
 he entire shaft and bearing assembly can be removed as a single assembly from
the inlet end of the fan housing.
•	 An adjustable motor base is provided for tightening the fan belts.
QEID service advantages:
•	 E
 xtended lubrication lines are provided for motor bearing requiring lubrication.
Smaller frame motors use sealed bearings and are permanently lubricated.
4

Inlet and Outlet Sound Power Levels
All Greenheck mixed flow fans have AMCA licensed sound power levels for both the
fan inlet and outlet.
Application and installation determines which sound power reading (inlet, outlet,
or both) is critical. The differences between the generated sound from the inlet and
outlet are important and noticeable. AMCA licensed inlet and outlet sound power
data provides complete sound information to select a fan based on the acoustical
requirements. For additional information on sound, refer to page 6.
Greenheck’s Sound Lab

Field Rotatable Housing / Compact Size
The QEI-L and QEI are designed to accommodate changing fan
mounting positions and motor orientation in the field. Mounting
fixtures are securely bolted to the fan casing and can be relocated
to reposition how the fan is installed or the position the motor is
oriented. Flexibility in a motor’s location is important for easier
access and can determine where the unit will fit. Last minute
design changes or unexpected obstacles during installation are
no longer a problem.
Greenheck’s mixed flow fans were designed for compact size.
Keeping size to a minimum is important when fitting into tight
spaces like mechanical rooms or air handlers.  

Slip-Fit Duct Connections
The inlet and outlet ends of the QEI-I/II and QEID are designed to
accept “slip-fit” connections. Often companion flanges are bolted
to a fan’s inlet/outlet flange to provide a slip-fit connection for a
flexible sleeve, as with the QEI-L. This extra step is now eliminated
by directly attaching the flexible sleeve to the duct and fan. This
saves time and money in the installation process.
It is recommended to use a flexible sleeve connection instead of a
rigid duct connection.

Patented (QEI/QEID)

USA Patent No. 7048499
China (P.R.) Patent No. CN1294361C
Mexico Patent No. 243465

The advantages of a flexible transition are:
•	 Decreased sound transmission in 	
the ductwork
•	 Flexible connections allow for minor
misalignment
•	 Accommodates the use of thrust 	
restraints to resist thrust loads

AutoCAD® and 3-D Revit® Models
Scaled AutoCAD® drawings and Revit® models
are available through Greenheck’s website
or from the Greenheck CAPS program
which retrieves drawings and places them
automatically into a job folder.

5

Design & Performance
Mixed Flow: Axial/Centrifugal Hybrid
Centrifugal

Static Pressure

A mixed flow wheel is a hybrid between an axial propeller and a
centrifugal wheel. The result is a design that combines the best axial
and centrifugal properties: highly efficient air movement, increased
pressure capabilities, extremely low sound levels, and a steep fan
performance curve. To further enhance the fan’s performance,
straightening vanes are incorporated in the housing. These serve
to convert swirling airflow into a straight axial flow with a resulting
static pressure rise and energy savings.

Mixed Flow
Axial

CFM

Airflow Profiles

Axial Fans:  Straight through
nearly linear airflow.
Centrifugal Fans:  Two 90°
deflections, before airflow
exits the fan.

Axial

Centrifugal

Mixed Flow

Mixed Flow Fans: Slight
airflow deflection from
straight through.

Sound and Efficiency
Sound power levels and fan efficiency are two very important factors when selecting a fan. There is a noticeable
difference between impeller types. The table and chart below compare the sound power (LwA) and the static
efficiency of the belt-driven mixed flow fan wheel versus tubular centrifugal and vane axial inline fans. Over a
wide range of operating points, the mixed flow fan provides the quietest and most efficient selection.
Mixed Flow
Fan Size

Performance

Sound Power (LwA)

Static Efficiency

(QEI-L, QEI-I/II)

Mixed Flow 	

Inline
Centrifugal

Vane Axial

(QEI-L, QEI-I/II)

Mixed Flow	

Inline
Centrifugal

Vane Axial

15,000 cfm
@ 1.0 in. wg

24

90 dB

100 dB

103 dB

43%

17%

34%

25,000 cfm
@ 2.0 in. wg

36

86 dB

93 dB

102 dB

68%

45%

56%

50,000 cfm
@ 4.0 in. wg

49

92 dB

98 dB

111 dB

71%

60%

59%

Model comparisons based on similar outer tube diameters.

Lower Sound Power, Better Sound Quality
Sound power levels shown at each frequency:
Typical
Tubular Centrifugal

Typical
Vane Axial

QEI-L
QEI-I/II

Sound Power, dB

100

90

80

70

60
62

125

250

500

1000

Frequency, Hz

6

2000

4000

8000

The sound quality of the belt-driven mixed flow fan line is
as beneficial to low sound design as is the reduced overall
sound power. The sound chart compares units of similar
QEI-L, QEI-I/II
outer tube diameters
an operating point of 20,000 cfm with
Typical VaneatAxial
Tubular
Centrifugal (Ps). Tubular centrifugals
1.5 inches wgTypical
of static
pressure
(green) have dominant tones in the 63 Hz through 250 Hz
octave bands, while vane axials (red) have more mid to high
frequency sound. The mixed flow fan (blue) does not have a
dominant tone. A bystander would hear a more bland sound
that is quieter than a tubular centrifugal or vane axial.

Wheel Characteristics
Belt Drive: Fan Class
Class I and II fans have different wheel designs with different performance characteristics.
Class I mixed flow wheels are optimized for performances involving low pressures and high volumes. Class II
wheels are designed for a steeper fan curve with higher pressure capabilities. This is illustrated in the graph
with the two different class wheels plotted at identical fan RPMs.
When selecting a mixed flow fan, it cannot be assumed that moving into a Class II fan will produce the same
results as a Class I mixed flow fans. Model QEI-L utilizes a Class I wheel.

Static Pressure

Class II

Class I

CFM

Direct Drive: Percent Wheel Width
Direct drive mixed flow fans are optimized for performance requirements by the use of partial width wheels. This
is necessary because the fan RPM is commonly fixed and identical to the motor RPM. A reduction in the width
of the wheel (or the air passage) results in reduced airflow capacity and a steeper fan curve. This is similar to
the effect of a reduced pitch in a direct drive vane axial fan. QEID wheels are available in 5% increments from
50 - 100% wheel width.

50% Wheel Width
50% Wheel Width

Width

Intermediate
Wheel
Widths

50%
Wheel
Width
50%
Wheel
Width

Intermediate
Wheel
Widths

CFM

Inter
W
W

CFM

100%
Wheel
Width

Static Pressure

Static Pressure

50% Wheel Width

Static Pressure

QEID fans can be used in conjunction with variable frequency drives (VFD’s) for variable air volume (VAV)
systems. In these applications, the wheel width is optimized to ensure efficient operation and stable
performance throughout the turndown range. VFD’s are also used for final system balancing and to reduce the
airflow when building requirements are reduced. In this case, the fan and wheel width are selected using the
50%
final design CFM and static pressure.
Wheel

100%
Wheel
Width

100% Wheel Width

CFM

Sound Power versus Sound Pressure
The sound values displayed on the performance pages are in terms of inlet sound power (LWi A) and outlet sound
power (LWo A). These values are the acoustic power radiating from the inlet and outlet of the fan, respectively.
Sound pressure, expressed as dBA, is the acoustic pressure at a point in space which can be measured with a
microphone or can be heard. To convert sound power (LwA) into sound pressure (dBA), the following corrections
100% Wheel Width
are applied
for a Width
hemispherical
free field.
100% Wheel
Distance from Fan
3 ft. (0.9 m)
5 ft. (1.5 m)
10 ft. (3.0 m)
dBA = LwA - correction
Correction
7 db
11.5 db
17.5 db
Note: Refer to AMCA Publication 303, Application of Sound Power Level Ratings for additional information on calculating typical sound pressure levels for fan installation.

7

Optional Features
Sure-Aire™
The Sure-Aire™ flow monitoring system measures fan
flow within a 3% accuracy. Unlike traditional flow probes
mounted in the fan venturi that create a system effect
hindering fan performance, Sure-Aire™ does not interfere
with airflow and will not impact the fan’s air or sound
performance. This option is available on all mixed flow fan
models and ships completely assembled from our factory.
An electronics package with pressure transmitter and
digital read out is available with the Sure-Aire™ system. The
electronic kits are available for 50 or 60 Hz power supplies
and provide a 4-20 mA output that can be tied into the
building’s automation system.

Sound Sensitive Areas
Sound Vault Housing - Radiated Sound Enclosure
The sound vault housing is an excellent product for fans that will be positioned adjacent to an occupied work
space or in sound critical applications. It locks in radiated sound from the fan casing, motor and drives, and
minimizes vibration transmission. Standard construction includes an acoustically lined housing, integral spring
isolators, and internal flexible connections at the fan’s inlet and outlet to effectively isolate the fan from the
system. Vertical or horizontal mounting configurations are available.

Why use a Sound Vault?
•	 Sound power attenuation levels determined by
sound intensity tests on actual units
•	 Ships fully assembled with fan
•	 Internal isolation to limit breakout noise
•	 Access panels for inspection of fan and motor
•	 Bearing lubrication lines extended to outside of
enclosure
•	 Formed mounting rails with prepunched holes
for easy installation
•	 Available on both QEI-I and QEID through 	
size 27 fans
This table lists the radiated sound
reductions from total sound power
levels for each octave band with
the sound vault housing.

8

Center Frequencies [Hz] 63
Attenuation Value (dB)

13

125 250 500 1000 2000 4000 8000
20

25

31

34

35

36

36

Optional Two-coat
Paint System
In 1972, Greenheck took the lead as the first commercial and industrial fan manufacturer to introduce
electrostatic powder coatings. Today, Greenheck continues to lead by being the first to offer a superior zinc-rich
powder basecoat and powder coating finish.
This zinc-rich basecoat technology is used extensively outside the HVAC industry to protect bridge beams,
automotive components and other heavy-gauge steel products. Now, this advanced technology is available on
Greenheck welded steel products.
Greenheck’s coating process starts with a minimum of five wash stages to treat all components prior to
painting. Cleaner parts result in better coating adhesion and durability. We then use an advanced two-coat
powder application method that includes a basecoat of zinc-rich powder and a topcoat of Greenheck’s
Permatector™ or Hi-Pro Polyester. The combination of these two topcoats over the zinc-rich basecoat results
in the two-coatings, Perma-Z and Hi-Pro-Z. These oven-cured coatings provide superior corrosion resistance
along with a tough, uniform finish to combat the most extreme conditions.

Zinc Advantage
When compared to a traditional single coat
application, the benefits of the two-coat 	
system include:

One Coat Process
Topcoat

•	 An automatic powder coat application
that produces uniform coverage and
unmatched paint quality.
•	 A double coat thickness that provides
superior durability and protection from 	
air and water.

Standard
Surface Preparation

2-3 mils
Base Steel

Two-coat Process

•	 A zinc-rich basecoat that includes
an epoxy component that provides
additional corrosion protection.
•	 A zinc-rich basecoat that provides
chemical protection of exposed steel 	
to prevent corrosion.
The protection offered by the zinc-rich basecoats in
Perma-Z and Hi-Pro-Z result in extraordinary corrosion
resistance. Test data demonstrates our two-coat paint
system offers three (Perma-Z) and four (Hi-Pro-Z) times
the corrosion resistance of other coatings commonly
available within the fan industry. See table for salt spray
life for various coatings.
Coating fans with Perma-Z or Hi-Pro-Z has reduced our
customers annual paint maintenance costs by three to 	
four times!
For more information, see Greenheck’s Coatings for
Extreme Applications catalog, available online at 	
www.greenheck.com

Zinc-rich Primer
(70% zinc)

Topcoat

Advanced
Surface Preparation

4-6 mils Total
Base Steel

Salt Spray ASTM B117
Hours

1000

2000

3000

4000

Permatector™
Hi-Pro Poly
Perma-Z
Hi-Pro-Z
Baked Phenolic
Epoxy Phenolic
Fluorocarbon

Salt Spray ASTM B117 is a comparative test
that indicates the corrosion resistance of
powder paint coatings.

9

Certifications & Listings
Tau Bot
psi
7880
7090
6300
5510
4720
3930
3140
2350
1560
770
-20

Y

Z

Seismic Certification

X

The International Building Code (IBC) has been adopted at the state and local
level throughout the United States. With the adoption of this code, comes the
introduction of standards intended to improve the performance and design of 	
non-structural systems subject to seismic events.
QEI-I/II and QEID
•	 Meet the 2006 IBC, 2009 IBC
•	 California OSHPD requirements (horizontal mount only) OSP 0223-10
•	 S
 hake table tested at an independent test facility in accordance with 	
ICC-ES AC 156
Structural Finite Element Analysis
•	 All equipment certified to worst case scenario seismic conditions	
Seismic Design Category F
-	 Importance factor of 1.5 (IP = 1.5)	
-	 Occupancy Categories (I - IV)	
-	 Site Classes (A - F)	
-	 Seismic Design Categories (A - F)
Results for LC 3, EQ neg Z dir (0.7*4.5)

Rice Engineering Inc

QEI-54 Class I

Jeremy J. Klaas

Mar 5, 2009 at 5:39 PM

08-08-05J

090224 EQZ .r3d

Consult your Greenheck representative or visit greenheck.com/seismic for more details.

UL 705 Power Ventilator

QEI-L, QEI-I/II and QEID models are available with the UL/cUL 705 (Underwriters Laboratory) listing on a wide
variety of 50 and 60 Hz motors. This listing ensures the use of UL approved electrical components.
Motors are available as either IEC (IP55) or NEMA (TEAO or ODP) designs. IEC design
motors are adjustable speed drive (ASD) compatible, have class F insulation and are
capable of wye-delta starting when over 5.5 kW. NEMA motors use across the line
starting with options for ASD compatibility. Motor (IEC or NEMA) using 50 Hz power have
a 1.0 service factor, while 60 Hz power have 1.15
UL/cUL File E40001
UL/cUL Listed Power Ventilator service factor. Design and construction options
for motors include increased thermal insulation,
overload protection and extended motor leads.

UL Emergency Smoke Evacuation
QEI-I/II and QEID models were tested and
rated for design time and temperature used
in emergency heat and smoke exhaust
applications.

UL/cUL File MH17511
UL/cUL Power Ventilators for Smoke Control Systems

Model

Operating
Time
Temperature Duration
ºC

ºF

Hours

QEID

300

572

1

QEI-I/II

300

572

2

QEI-I/II

260

500

4

QEID

260

500

5

Comments
Per British Spec 7346
Per Industrial Risk
Insurers (North America)

Consult your Greenheck representative for time and temperature
combinations other than those listed.

UL 762 Restaurant Exhaust

Inline grease exhaust fans are an excellent alternative for
kitchen applications when roof or wall mounted ventilators
are not practical. A QEI-I/II with UL 762 grease option is
designed to withstand the demands of high temperature
kitchen grease exhaust and high-pressure duct washers.

A Tough Package to Beat

The QEI-I/II inline grease fan is tough to beat when
packaged with our full line of kitchen hoods and grease
extraction options. Take advantage of Greenheck’s
expertise in providing a total solution in kitchen ventilation
equipment.
10

Listed Power
Ventilation for
Restaurant
Exhaust
Appliances
13G3 Maximum
Operating
Temperature
400°F.

UL 762 is concerned with fans designed
for removal of smoke and grease laden
vapors with airstream temperatures up
to 400°F.
•	 Meets all UL 705 requirements
•	 UL/cUL File MH11745 	
UL/cUL Power Ventilators for
Restaurant Exhaust Appliances
•	 Bolted access door
•	 Drain connection
•	 Meets requirements of NFPA 96
	 Ventilation Control and Fire Protection
of Commercial Cooking Operations

Belt Drive versus Direct Drive
Belt Drive Advantages
•	 Lower sound levels
•	 Motor out of the airstream for easy access
•	 Motor size may be changed to accommodate
possible future air capacity requirements
•	 Final system balancing accomplished by
changing drives

Direct Drive Advantages
•	 Fewer wear components and less maintenance, no
shaft, bearings, pulleys, or belts
•	 More compact than equivalent belt drive size
•	 Motor in airstream for increased motor efficiency
and cooling
•	 Equal loading between mounting brackets
•	 Final system balancing accomplished by adjusting
the motor speed (ex. variable frequency drive use).

High Efficiencies = Lower Operating Costs
Example of Annual Operating Cost Savings
For a system performance requirement of 25,000 cfm at 2.5 inches of static pressure (wg) the corresponding
operating power requirements are 13.97 Bhp with a QEI-I size 36 and 19.8 Bhp for a size 36 tubular centrifugal fan.
Formulas:
- Kilowatt-Hours = (Operating Power (Bhp) x 0.746 x Hours of Operation) / Motor Efficiency
- Operating Cost =  Kilowatt-Hours x Power Cost per kW hour
Assumptions:
- Cost of electricity is $0.09 per kilowatt hour
- 3,120 annual hours of operation (12 hours per day, five days a week, 52 weeks a year)
- 93.0% motor efficiency (equal to NEMA Premium minimum efficiency for 15 and 20 hp, ODP, 1725 rpm motor)

Tubular Centrifugal Fan

QEI-I - Mixed Flow Fan

kW-Hours = (19.8 Bhp x 0.746 x 3120) / 0.93 = 49,554

kW-Hours = (13.97 Bhp x 0.746 x 3120) / 0.93 = 34,963

Operating Cost  = 49,554 x $0.09 = $4,460

Operating Cost  = 34,963 x $0.09 = $3,147

Annual Operating Cost Savings = $4,460 - $3,147 = $1,313
11

Belt Drive Mounting
Configurations
QEI-I/II Sizes 9-27 and all QEI-L
Universal Mounting

Optional
Mounting
Rails

Fig. 1

QEI-I/II models sizes 9-27 and all QEI-L models can be
mounted horizontally or vertically. For ease of installation,
eight mounting brackets are welded on each fan. These
eight brackets along with standard mounting supports
provide for Greenheck’s Universal Mounting System.
Motor positions are viewed from the discharge end.
Fig. 1	 Horizontal Base Mount
	
Each fan is shipped as standard in this arrangement.
	
Motor at “A” position (12 o’clock) is standard.

Fig. 2

Optional
Mounting
Rails

Fig. 2	 Horizontal Base Mount with motor at “C” or “G”
position (3 or 9 o’clock). A set of optional mounting
rails are recommended for this installation.
Fig. 3	 Horizontal Ceiling Hung
	
In this installation the supports can be positioned for
mounting the motor at “A” or “E” (12 or 6 o’clock).

Fig. 3

Fig. 4
Vertical Ceiling Hung

Optional
Mounting Rails

Fig. 4	 Horizontal Ceiling Hung with motor at “C” or “G” (3
or 9 o’clock). A set of optional mounting rails are
recommended for this installation.
Fig. 5	 Vertical Mount
	
Universal QEI fans can be mounted vertically (ceiling
hung or base mount) for either upward or downward
airflow. Optional mounting rails are suggested for
any vertical installation.

Vertical Base Mount

Fig. 5

A
H

QEI-I/II Sizes 30-60

QEI-I/II models 30-60 are available in horizontal and vertical mounting configurations.
Lifting lugs are provided on horizontal fans for ease of installation. Vertical units
should be lifted by the mounting brackets.

B

G

C

Horizontal Mounting
Horizontal mounting configurations, base mount or ceiling hung, are provided with an
identical support. The mounting configuration can be changed between base mount
or ceiling hung in the field. The motor position can also be field rotated to any of the
shown positions. Motor positions are viewed from the discharge end.
Base Mount:	 Rigid steel base provides stable mounting to floor for the housing.
	
Motor Positions:  A, B, C, G and H
Ceiling Hung:	 Suspend the fan horizontally from the ceiling.
	
Motor Positions:  A, C, D, E, F and G
Mounting rails are recommended for horizontal installations with B, C, D, F, G and H
motor positions.

Horizontal - Base Mount
A

C

G

F

D

E
Horizontal - Ceiling Hung

Vertical Mounting
Vertical mounting configurations, upblast or downblast, are provided with heavy duty steel brackets welded to
both ends. These brackets permit either floor or ceiling mounting on the same unit. Optional mounting rails are
suggested for any vertical installation for sizes 9-27.

12

Roof Upblast & Spark Resistant
Construction
Roof Upblast
Models QEI-I/II sizes 9 through 54 and model QEID
sizes 12 through 54, are available in roof upblast
configuration. The roof upblast configuration is ideal
for exhausting contaminants away from a building to
prevent roof damage and re-entrainment of exhaust
air. Both QEI-I/II roof upblast models have the high
temperature UL rating and can be used for emergency
smoke exhaust applications.
Standard construction includes a fully-welded heavygauge curb cap to eliminate leaks, a butterfly damper
section for backflow prevention, and a windband
section to protect the butterfly dampers from debris. A
complete line of roof curbs is available for mounting to
a roof deck.

Spark Resistant Construction
Greenheck mixed flow fans are available with spark
resistant designs suitable for applications that involve
flammable particles, fumes or vapors. Spark resistant
construction options adhere to guidelines defined
within AMCA Standard 99-0401-10.

QEI-I/II

QEI-I/II
QEI-L

Spark B

The fan wheel is constructed of a
nonferrous material (aluminum).
A non-ferrous (aluminum) bearing
cover surrounds the driven bearing,
shielding it from the airstream.

Spark C

The inlet cone is constructed of
non-ferrous material (aluminum).
A nonferrous (aluminum) bearing
cover surrounds the driven bearing
shielding it from the airstream.

13

Accessories
Availability
Motor Cover

Hinged Access Door

QEI-L

QEI-I

QEI-II

A weatherproof motor cover shields the motor components
from dust, dirt and moisture for indoor or outdoor
installations. Motor covers also serve as a personnel guards
and meet OSHA standards.







Hinged access doors provide an opening through the fan
housing for cleaning or visual inspection of the wheel. Bolted
access door is standard.

















Std.























Extended Life
Bearings

Air handling quality, flange mounted bearings meet a basic
rating fatigue life L10 per ABMA standards, in excess of
200,000 hours (L50 at 1,000,000) at maximum operating
speed.

Copper Lube Lines
(Belt Drive)

Copper lube lines can be used as a replacement for
standard nylon lube lines.

Flanges

Inlet and outlet flanges with prepunched holes, welded to
the housing, provide an easy means for bolted connection
to ductwork. Matching bolt-on companion flanges are also
available.

Disconnect Switches

Toggle-type and heavy-duty disconnect switches are
available for positive electrical shut-off and safety when
servicing fans. The following switches are available to
meet individual electrical requirements and can be factory
mounted or shipped loose for field mounting.
• NEMA-1	
General purpose
• NEMA-3R	
Rainproof
• NEMA-4	
Watertight
• NEMA-7 & 9* 	 Class 1 and 2 hazardous locations

QEID



*Greenheck will not factory mount NEMA-7 & 9 disconnect switches.

Inlet and Outlet
Guards

Removable inlet and outlet guards provide protection
for personnel and equipment in ducted or non-ducted
installations.

Extended Wiring

Electric leads from the motor junction box are brought out to
exterior of unit. This provides an easy means of connecting
the motor to the electrical system.



Belt Tube

A totally enclosed belt tube isolates the belts and drives
from the airstream.

Sound Vault Housing

See page 8 for more details on sound vault housing.

Mounting Rails

Mounting rails are recommended for vertically mounted fans
or horizontal mounting when the motor is to be located in the
C or G (3 or 9 o’clock) position.







Isolators

Both base mount and hanging isolators are available in
either neoprene or spring mounts.









Special Coatings

Special coatings are available for protective purposes.
Consult Greenheck’s Product Application Guide,
Performance Coatings for Ventilation Products, for a
complete list of coatings available and their chemical
resistance. Available online at www.greenheck.com.









Sure-Aire provides real-time flow measurement for use in
building automation systems. For additional information,
see page 8 or our Sure-Aire Flow Monitoring System catalog
available at www.greenheck.com.









Sure Aire™ Flow
Measurement

14











Exploded View

Motor Cover

Companion Flange

Slip Fit Connection	
(Standard on QEI-I/II)
Inlet Guard
Outlet Flange
(Standard on QEI-L)
Outlet Guard
Bolted Access Door
(Standard)
Spring Base Isolator
Neoprene Base Isolator
Inlet Flange	
(Standard on QEI-L)
Companion Flange
Spring Hanging Isolator
Mounting
Rails

15

Direct Drive Selection Charts
The quick select charts below and on the following page are a convenient method for sizing the fan required for a
specific performance. Colored bands for a given size in each chart represent the entire operating range available
for that size and speed.
For QEID performance pages showing AMCA Licensed data for sound and air performance please refer to the
Model QEID Sound and Air Performance Supplement found at www.greenheck.com

12

1770 RPM
(60 Hz)
Model QEID
12—33

10
Static
Pressure
(in. wg)

8
6
4
2
12

0

15

16

1

18

20 22

5

24 27 30 33

10

50

100

Volume (cfm x 1000)

12

1170 RPM
(60 Hz)
Model QEID
15—49

10
Static
Pressure
(in. wg)

8
6
4
2
15

0
1

16

18

20

5

22

24 27 30 33 36 40 44 49

10
Volume (cfm x 1000)

16
16

50

100

QEID Dimensional Data
8

6

870 RPM
(60 Hz)

Static
Pressure
(in. wg)

Model QEID
36—54

4

2

0

36

10

40

20

30

44

40

49

54

50

100

Volume (cfm x 1000)

Size

Slip Fit
O.D.

Length

	 *	Length varies with motor frame size.

Refer to Length table shown.
	**	Weight is for unit only and does not
include motor.

12
15
16
18
20
22
24
27
30
33
36
40
44
49
54

Slip Fit O.D.
inches
mm
17.13
435
20.88
530
23.00
584
25.38
645
27.81
706
30.88
784
34.00
864
37.44
951
41.63
1057
45.75
1162
50.56
1284
55.75
1416
61.63
1565
67.75
1721
75.00
1905

Length*
inches
mm
25.0
635
25.0
635
26.0
660
29.0
737
34.0
864
35.5
902
41.5
1054
45.0
1143

Length ­— inches (millimeters)
284/6 T
324/6 T
364/5 T

Refer to	
table below.

Size

254/6 T

30

45.5  (1156)

50.0  (1156)

50.0  (1156)

33

46.5  (1181)

54.0  (1372)

54.0  (1372)

54.0  (1372)

36

50.5  (1283)

58.0  (1473)

58.0  (1372)

58.0  (1372)

56.5  (1435)

61.0  (1549)

61.0  (1549)

64.0  (1626)

64.0  (1626)

70.0  (1778)

49

74.5  (1892)

74.5  (1892)

80.5  (2045)

54

77.0  (1956)

77.0  (1956)

83.0  (2108)

40
44

404/5 T

Weight**
lbs.
kg.
100
45
140
65
170
80
200
95
250
115
370
170
480
220
570
260
860
390
1140
520
1360
620
1650
750
2190
995
2700
1225
3130
1420

444/5 T

17

QEI Dimensional Data
QEI-L

QEI
Airflow

Height

Airflow

Height

Slip Fit
O.D.

Height

Length

Length

QEI-L
Size

18

Slip-Fit O.D.
inches (mm)

Length

QEI Class I

Height

inches (mm)

Slip-Fit O.D.
inches (mm)

Length

Height

inches (mm)

QEI Class II
Length

Height

inches (mm)

9

NA

NA

NA

17.13  (435)

NA

NA

28.5  (724)

36.5  (927)

12

17.5  (445)

26.5 (673)

37.5 (953)

17.13  (435)

28.5  (724)

36.5  (927)

30.5  (775)

36.5  (927)

15

21.13  (537)

29.0 (737)

41.5 (1054)

20.88  (530)

31.0  (787)

41.0  (1041)

34.0  (864)

41.0  (1041)

16

23.31  (592)

31.0 (787)

44.0 (1118)

23.00  (584)

33.0  (838)

44.0  (1118)

34.0  (864)

44.0  (1118)

18

25.63  (651)

33.0 (838)

46.5 (1181)

25.38  (645)

35.0  (889)

46.5  (1181)

39.5  (1003)

47.5  (1207)

20

28.06  (713)

35.5 (902)

50.5 (1283)

27.81  (706)

37.5  (953)

50.5  (1283)

41.5  (1054)

50.5  (1283)

22

31.13  (791)

39.0 (991)

53.5 (1359)

30.88  (784)

41.0  (1041)

53.5  (1359)

44.0  (1118)

53.5  (1359)

24

34.25  (870)

42.5 (1080)

55.5 (1410)

34.00  (864)

44.5  (1130)

57.5  (1461)

49.0  (1245)

59.5  (1511)

27

37.69  (957)

45.0 (1143)

61.0 (1549)

37.44  (951)

47.0  (1194)

61.0  (1549)

53.0  (1346)

63.0  (1600)

30

42.00  (1067)

52.0 (1321)

64.5 (1638)

41.62  (1057)

54.0  (1372)

65.0  (1651)

60.5  (1537)

72.0  (1829)

33

46.13  (1172)

56.5 (1435)

68.0 (1727)

45.75  (1162)

58.5  (1486)

69.0  (1753)

65.0  (1651)

76.5  (1943)

36

51.06  (1297)

62.0 (1575)

75.0 (1905)

50.56  (1284)

64.0  (1626)

75.0  (1905)

69.0  (1753)

82.5  (2096)

40

NA

NA

NA

55.75  (1416)

68.5  (1740)

83.0  (2108)

75.5  (1918)

90.5  (2299)

44

NA

NA

NA

61.62  (1565)

74.0  (1880)

89.5  (2273)

80.5  (2045)

97.0  (2464)

49

NA

NA

NA

67.75  (1721)

80.5  (2045)

96.5  (2451)

86.5  (2197) 104.0  (2642)

54

NA

NA

NA

75.00  (1905)

87.0  (2210) 105.0  (2667) 93.5  (2375) 111.0  (2819)

60

NA

NA

NA

82.88  (2105)

91.5  (2324) 113.0  (2870) 102.5  (2604) 119.0  (3023)

QEI-9 Class II
10

Performance Data
4000

Specification Data

Minimum Motor 	
Starting hp

1/3 hp

.25 kW

Wheel Diameter

15 in.

381 mm

170 lbs.

77 kg.

70% WOV

2

15

10

Static Pressure (in. wg)

Static Pressure (Pa x 100)

184T

Approximate Weight
(Less Motor & Drives)

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

8

20

Maximum Motor 	
Frame Size

50% WOV
60% WOV

6

TH
EL
EF
TO
FT
HIS
SY
ST
EM
CU
RV
E

Maximum Fan RPM

5
3

1½

1

4

¾

28

5

2

3

SE
LE
CT

Maximum Bhp = (Fan RPM / 2671)

TO

½

3

Outlet Velocity (FPM) = CFM / 1.56
Tip Speed (FPM) = Fan RPM x 3.93

DO

0

% WOV = (CFM x 100) / (Fan RPM x 0.73)

0

0

16

T
NO

34

00

80% WOV

00

00
90% WOV

00

00

5

10
15
Volume (cfm x 100)

Imperial data — Metric data
0

22

40

1

2

20

25

3

30

4

5

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

850

541

0.25

0.5

1

1.5

2

2.5

3

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

1325

0.09

1463

0.14

1709

0.25

1937

0.38

2148

0.52

2341

0.67

RPM

3.5
BHP

RPM

4
BHP

RPM

BHP

1000

636

1511

0.13

1633

0.18

1854

0.31

2056

0.44

2252

0.59

2432

0.75

2606

0.93

2767

1.11

1150

732

1700

0.17

1811

0.23

2013

0.37

2198

0.52

2371

0.68

2542

0.85

2700

1.03

2858

1.22

3007

1.42

1300

828

1893

0.23

1994

0.29

2177

0.44

2349

0.61

2511

0.78

2661

0.96

2817

1.15

2961

1.35

3098

1.56

1450

923

2088

0.31

2181

0.37

2351

0.53

2510

0.71

2658

0.89

2804

1.08

2940

1.28

3079

1.49

3212

1.71

1600

1019

2285

0.40

2371

0.47

2530

0.63

2674

0.82

2818

1.02

2951

1.23

3083

1.44

3207

1.66

3331

1.88

1750

1114

2483

0.50

2563

0.58

2711

0.75

2849

0.95

2981

1.16

3109

1.38

3230

1.61

3351

1.84

3466

2.08

1900

1210

2682

0.63

2757

0.72

2897

0.89

3027

1.10

3149

1.32

3271

1.56

3387

1.80

3498

2.04

3611

2.29

2050

1305

2883

0.77

2952

0.87

3084

1.06

3207

1.26

3324

1.50

3435

1.75

3549

2.00

3656

2.26

3758

2.53

2200

1401

3083

0.94

3149

1.04

3274

1.25

3390

1.45

3502

1.70

3609

1.96

3713

2.22

3818

2.50

3918

2.78

2350

1496

3285

1.13

3347

1.24

3465

1.46

3576

1.68

3683

1.92

3785

2.19

3883

2.47

3981

2.76

2500

1592

3487

1.34

3545

1.46

3657

1.69

3764

1.93

3865

2.16

3964

2.44

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
1600

2200

2800

3400

4000

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
69
71
70
72
74
72
73
75
77
77
78
78
78
78
80
80
78
79
82
82

2
71
69
70
70
75
71
72
73
78
78
79
79
80
81
82
82
82
83
85
84

3
74
72
71
71
78
73
74
74
82
77
78
79
84
81
81
82
85
84
84
85

4
70
68
66
65
75
72
70
70
78
74
74
75
80
77
77
79
82
81
80
83

5
71
68
63
63
75
72
69
69
80
75
74
74
83
79
78
78
87
83
82
82

6
67
66
65
65
74
71
70
70
79
75
74
74
83
79
78
78
87
83
81
82

7
65
62
61
61
71
66
66
66
75
71
70
70
79
75
74
74
83
79
78
78

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
57
56
55
55
65
60
60
61
74
66
65
65
79
71
70
70
83
76
76
75

LWiA
75
73
71
71
80
77
76
76
85
81
80
80
89
84
84
84
92
88
87
88

RPM
1600

2200

2800

3400

4000

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
76
77
80
82
86
86
87
88
88
87
91
92
88
90
94
94
88
94
95
95

2
78
80
78
78
86
85
85
86
85
88
85
86
88
88
87
88
93
86
89
90

3
78
77
76
77
84
84
82
82
87
85
86
86
91
89
89
89
96
92
92
92

4
70
67
66
66
77
73
73
74
81
77
78
79
84
80
82
83
87
82
85
86

5
71
68
66
66
78
74
73
73
83
79
78
79
87
83
83
84
91
87
86
88

6
65
63
62
62
74
70
69
69
80
76
75
75
85
81
80
81
90
86
85
85

7
63
58
58
58
69
65
65
65
75
71
70
70
80
76
76
76
85
81
81
81

8
56
56
56
56
64
61
61
61
72
66
67
67
78
71
72
72
83
75
76
77

LWoA
76
74
73
73
82
80
79
79
87
84
84
84
92
88
88
89
96
92
92
92

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

19

QEI-12 Class I & QEI-L
Performance Data

10

3800
3800

7½

5

50% WOV

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

60% WOV

20

15

10

6
2
1½

4
1
¾

5

½

2

70% WOV

CU
RVE

3

TH
EL
EF
TO
FT
HIS
SY
STE
M

Maximum
QEI-L
184T
Motor 	
QEI
184T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
15 in.
381 mm
Approximate Weight QEI-L 120 lbs. 55 kg.
(Less Motor & Drives) QEI 160 lbs. 73 kg.
Maximum Bhp = (Fan RPM / 2301)3
Outlet Velocity (FPM) = CFM / 1.56
Tip Speed (FPM) = Fan RPM x 3.93
% WOV = (CFM x 100) / (Fan RPM x 1.34)
Imperial data — Metric data

8

SE
LE
CT
TO

Static Pressure (Pa x 100)

Specification Data

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

NO

00

32

00

90% WOV

26

00

200

0

T

3

80% WOV
38

DO

0

0

0

14

00

1

2

0

3
Volume (cfm x 1000)

2

4

4

6

5

6

8

10

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

2

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

2.5
BHP

RPM

BHP

3.5

4

RPM

BHP

RPM

BHP

RPM

BHP

1200

764

1070

0.09

1241

0.15

1549

0.30

1823

0.49

1500

955

1257

0.13

1399

0.20

1661

0.37

1907

0.57

2137

0.79

2341

1.03

1800

1146

1461

0.19

1575

0.27

1807

0.46

2020

0.67

2228

0.91

2423

1.16

2607

1.43

2776

1.72

2100

1337

1669

0.27

1763

0.36

1967

0.56

2162

0.80

2341

1.04

2523

1.31

2690

1.60

2858

1.90

3016

2.22

2400

1528

1881

0.38

1966

0.48

2139

0.69

2317

0.94

2484

1.21

2640

1.49

2801

1.79

2954

2.11

3099

2.44

2700

1719

2095

0.51

2172

0.62

2323

0.85

2479

1.11

2636

1.40

2785

1.71

2926

2.02

3067

2.35

3208

2.70

3000

1910

2310

0.68

2382

0.79

2514

1.04

2657

1.31

2799

1.62

2938

1.94

3072

2.28

3201

2.63

3322

2.98

3300

2101

2527

0.88

2593

1.00

2716

1.26

2840

1.55

2969

1.86

3100

2.21

3226

2.57

3348

2.94

3467

3.32

3600

2292

2745

1.11

2806

1.25

2922

1.53

3029

1.82

3150

2.16

3265

2.50

3387

2.88

3503

3.28

3615

3.68

3900

2484

2964

1.39

3021

1.54

3129

1.84

3231

2.15

3335

2.49

3446

2.86

3551

3.23

3665

3.65

3772

4.08

4200

2675

3184

1.71

3237

1.87

3338

2.19

3435

2.53

3527

2.87

3630

3.25

3731

3.65

4500

2866

3404

2.08

3453

2.25

3549

2.59

3641

2.95

3729

3.31

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
1400

2000

2600

3200

3800

20

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
77
77
78
78
78
74
74
76
83
80
79
81
85
82
83
83
86
80
85
84

2
78
78
78
77
78
77
76
77
82
82
81
81
85
85
85
84
87
87
88
87

3
71
69
68
68
78
76
75
75
80
81
79
79
82
83
82
82
85
83
85
84

4
73
68
65
64
79
75
71
70
80
78
76
75
82
81
81
81
86
83
85
86

5
67
65
62
62
75
71
68
67
78
75
73
72
81
79
77
77
86
82
80
81

6
68
64
61
60
75
72
68
67
77
76
74
73
80
78
77
77
84
80
79
80

7
61
60
60
60
73
66
64
63
83
74
70
69
87
79
74
74
88
80
77
78

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
52
52
52
52
59
58
58
58
68
65
65
65
79
70
70
70
91
74
74
74

LWiA
75
72
70
69
82
78
75
74
86
82
80
79
90
86
84
84
95
88
87
88

RPM
1400

2000

2600

3200

3800

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
87
87
88
89
84
84
85
87
90
92
90
91
93
94
93
95
93
93
96
97

2
83
81
82
81
84
84
84
84
93
90
89
90
95
92
92
93
94
92
93
94

3
75
74
74
73
80
77
76
76
83
81
81
81
88
85
85
86
93
89
89
90

4
74
71
70
70
80
77
75
75
82
79
79
78
85
82
82
81
90
85
85
85

5
72
70
68
67
80
77
74
73    
83
82
79
78
86
85
83
83
90
87
87
87

6
71
68
67
66
77
75
71
70
80
79
77
76
83
82
81
80
88
84
84
84

7
63
62
62
62
75
69
67
66
82
75
73
71
86
80
77
76
87
83
81
81

8
59
58
59
59
64
64
64
64
72
69
69
70
81
74
74
74
92
77
77
77

LWoA
78
76
75
74
84
81
79
79
89
86
84
84
92
89
88
88
97
92
91
92

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-12 Class II
12

Performance Data
4000
25

1/3 hp

Wheel Diameter

15 in.

381 mm

180 lbs.

82 kg.

15

10

3

6

2
1½

4

1
¾

Maximum Bhp = (Fan RPM / 2345)3
5

Outlet Velocity (FPM) = CFM / 1.56

½

2

Tip Speed (FPM) = Fan RPM x 3.93

DO

0

% WOV = (CFM x 100) / (Fan RPM x 1.16)

0

70% WOV

T
NO

0

40

80% WOV

00

34

00

28

00

TO

Approximate Weight
(Less Motor & Drives)

.25 kW

8

LE
FT
OF
TH
IS
SY
ST
EM
CU
RVE

Minimum Motor 	
Starting hp

20

TH
E

184T

60% WOV

10

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

Specification Data

LE
CT

Maximum Fan RPM

RPM
BHP
% WOV
Density 0.075 lb/ft3
Density 1.2 kg/m3

50% WOV

7½

5

90% WOV

220

0

SE

160

0

1

2
3
Volume (cfm x 1000)

Imperial data — Metric data
0

2

4

4

5

6

8

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0

0.5

1

2

3

4

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

5

RPM

BHP

6

RPM

BHP

7

RPM

BHP

RPM

BHP

1400

891

1203

0.08

1460

0.21

1696

0.37

2131

0.75

2510

1.21

1600

1019

1375

0.12

1604

0.26

1812

0.43

2213

0.84

2574

1.31

2894

1.84

1800

1146

1547

0.17

1752

0.33

1943

0.51

2301

0.93

2641

1.43

2957

1.98

3239

2.59

2000

1273

1719

0.24

1906

0.41

2080

0.60

2410

1.05

2728

1.56

3021

2.13

3302

2.76

3557

3.43

2200

1401

1891

0.32

2062

0.50

2223

0.71

2522

1.17

2817

1.71

3102

2.30

3366

2.95

3620

3.64

3854

4.37

2400

1528

2062

0.41

2221

0.61

2370

0.83

2653

1.32

2924

1.88

3190

2.49

3443

3.15

3684

3.86

3917

4.62

2600

1656

2234

0.52

2381

0.74

2519

0.97

2785

1.48

3035

2.06

3283

2.70

3530

3.38

3759

4.11

3981

4.88

2800

1783

2406

0.65

2543

0.88

2673

1.13

2921

1.66

3157

2.27

3393

2.92

3618

3.63

3846

4.38

3000

1910

2578

0.80

2706

1.05

2829

1.31

3064

1.87

3289

2.49

3504

3.17

3722

3.90

3934

4.67

3200

2038

2750

0.98

2871

1.24

2987

1.51

3209

2.10

3421

2.74

3624

3.44

3831

4.19

3400

2165

2922

1.17

3036

1.45

3145

1.74

3356

2.35

3556

3.01

3755

3.74

3943

4.50

3600

2292

3094

1.39

3202

1.68

3305

1.99

3504

2.62

3699

3.32

3887

4.06

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
1600

2200

2800

3400

4000

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
74
73
74
76
76
76
77
83
86
85
86
83
87
87
87
80
82
84
84

2
77
79
80
80
77
78
79
79
82
86
91
89
86
86
90
89
89
83
82
83

3
77
75
75
76
78
76
75
75
83
81
79
80
85
83
82
83
86
83
85
85

4
74
69
66
65
78
74
71
71
80
77
76
76
83
80
79
80
86
81
81
83

5
70
66
64
63
76
72
70
69
80
76
75
74
83
80
79
78
87
83
82
82

6
69
67
64
63
75
72
70
68
78
75
75
74
82
79
78
78
86
82
81
81

7
69
61
58
57
76
68
66
64
78
73
72
70
80
76
76
75
84
79
79
79

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
56
55
55
54
67
63
62
62
79
68
67
67
85
72
71
71
89
76
75
75

LWiA
77
73
72
72
82
78
76
76
86
82
82
81
90
85
85
85
93
88
87
88

RPM
1600

2200

2800

3400

4000

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
87
84
85
87
89
87
88
89
97
91
91
93
98
93
93
95
95
94
94
94

2
83
85
84
84
85
84
82
83
89
90
87
88
91
90
89
89
90
88
89
89

3
78
73
73
73
80
77
77
77
86
83
83
83
88
86
86
86
90
87
89
88

4
75
70
68
68
80
76
74
74
83
80
79
79
86
83
83
83
89
85
85
86

5
74
71
68
68
80
77
74
74
84
82
80
79
88
85
84
83
91
88
88
87

6
71
69
66
65
77
74
72
71
81
79
77
76
85
82
81
81
89
86
85
84

7
69
63
61
60
75
70
67
67
78
75
73
73
81
79
78
77
85
82
82
82

8
58
58
58
59
67
66
66
66
78
71
71
70
84
75
75
74
87
78
78
78

LWoA
79
76
75
74
84
81
79
79
89
86
85
84
92
89
89
88
96
92
92
91

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

21

QEI-15 Class I & QEI-L
QEI-15I
Performance Data

6

5

14

2721
2721

60% WOV

3

SY
ST
EM
CU
RVE
TH
IS

3

2
½

1

2

¼

0
0

0

23

31

OF

1

4

80% WOV

TH
EL
EF
T

6

2

20

37
90% WOV

TO

8

4

16

17

LE
CT

10

21

Maximum
QEI-L
184T
Motor 	
QEI
213T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
18.25 in.
464 mm
Approximate Weight QEI-L 140 lbs. 64 kg.
(Less Motor & Drives) QEI 190 lbs. 82 kg.
Maximum Bhp = (Fan RPM / 1617)3
Outlet Velocity (FPM) = CFM / 2.32
Tip Speed (FPM) = Fan RPM x 4.78
% WOV = (CFM x 100) / (Fan RPM x 2.55)
Imperial data — Metric data

70% WOV

27

Static Pressure (Pa x 100)

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV

5

12

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

DO

T
NO

SE

12

83

101

8

1

2

3

4

5

6

7

Volume (cfm x 1000)
0

2

4

6

8

10

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5
BHP

RPM

BHP

3.5

4

RPM

BHP

RPM

BHP

RPM

BHP

1700

732

823

0.12

965

0.21

1229

0.44

2100

905

952

0.17

1072

0.28

1301

0.52

1508

0.81

2500

1077

1088

0.24

1194

0.36

1391

0.62

1580

0.93

1753

1.27

1915

1.64

2900

1250

1231

0.33

1323

0.46

1495

0.75

1662

1.07

1827

1.43

1976

1.83

2122

2.24

2257

2.68

3300

1422

1376

0.44

1456

0.59

1615

0.92

1763

1.25

1907

1.62

2054

2.03

2188

2.47

2317

2.94

2443

3.42

3700

1594

1524

0.58

1597

0.74

1740

1.11

1875

1.47

2008

1.86

2135

2.27

2266

2.73

2390

3.22

2505

3.72

4100

1767

1674

0.75

1740

0.93

1870

1.31

1996

1.73

2114

2.13

2236

2.56

2350

3.02

2469

3.52

2583

4.05

4500

1939

1825

0.95

1885

1.14

2003

1.55

2121

2.01

2234

2.45

2339

2.90

2451

3.38

2556

3.88

2663

4.41

4900

2112

1977

1.19

2031

1.40

2141

1.83

2251

2.31

2356

2.82

2458

3.29

2553

3.77

2657

4.30

5300

2284

2130

1.47

2180

1.69

2282

2.16

2383

2.65

2483

3.20

2579

3.73

2672

4.24

5700

2456

2283

1.79

2330

2.03

2426

2.52

2517

3.04

2613

3.61

2704

4.20

6100

2629

2436

2.16

2481

2.41

2570

2.94

2657

3.48

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
650

1000

1400

2000

2721

22

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
63
62
60
60
65
63
63
66
69
68
67
68
73
68
75
81
79
80
78
80

2
61
59
59
59
66
63
63
64
77
76
70
71
73
76
77
80
78
73
75
79

3
59
59
57
56
68
65
63
63
73
70
68
70
82
76
77
77
86
83
78
80

4
56
53
52
52
65
62
60
59
72
68
66
65
81
78
76
76
88
85
81
81

5
57
54
54
53
60
58
57
57
69
66
65
64
78
74
72
72
86
81
79
78

6
52
51
51
51
63
56
55
55
67
63
62
61
74
72
70
71
83
79
77
76

7
48
48
47
47
52
51
50
50
69
58
57
56
77
67
67
67
80
74
73
74

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
35
35
35
35
44
42
42
42
53
50
50
50
65
61
62
61
83
69
69
70

LWiA
60
59
58
58
68
64
63
62
75
71
69
69
84
80
78
78
91
86
84
83

RPM
650

1000

1400

2000

2721

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
74
69
70
71
73
75
76
77
79
79
77
80
83
79
83
86
91
88
87
90

2
65
64
64
64
73
74
73
74
79
74
75
75
82
78
81
83
85
83
87
89

3
60
59
58
58
66
64
64
64
74
72
73
72
81
77
78
79
87
81
83
85

4
58
57
56
56
68
66
65
65
74
71
69
69
83
79
77
77
90
84
82
83

5
59
57
57
57
65
63
62
62
73
71
68
68
82
79
77
76
90
86
83
83

6
54
55
54
55
64
60
59
59
69
67
66
65
78
75
74
73
86
84
81
81

7
52
52
52
52
55
56
55
55
70
61
61
61
78
70
69
69
82
78
77
76

8
39
40
40
40
47
47
47
47
56
55
55
55
68
63
64
64
84
72
71
72

LWoA
63
62
61
61
70
68
68
68
78
74
73
73
86
82
81
81
94
90
88
88

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-15 Class II
QEI-15II
10

Performance Data
Maximum Fan RPM

3445

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV

7½

60% WOV

9

10
5

18.25 in.

464 mm

Approximate Weight
(Less Motor & Drives)

220 lbs.

100 kg.

10

UR
VE

FT
HIS
SY
ST
EM
C

Wheel Diameter

6

3

5
2

4
3

5

Tip Speed (FPM) = Fan RPM x 4.78

DO

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 2.20)

02

99

166

SE

1

90% WOV

24
20

LE
CT

2

Outlet Velocity (FPM) = CFM / 2.32

28

47

TO

1

Maximum Bhp = (Fan RPM / 1666)3

59

.25 kW

32

1/3 hp

80% WOV

45
34

Minimum Motor 	
Starting hp

15

7

EF
TO

215T

70% WOV

8

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

20

TH
EL

Specification Data

6

T
NO

1

2

3

4

5

6

7

8

Volume (cfm x 1000)

Imperial data — Metric data
0

2

4

6

8

10

12

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

2500

1077

1315

0.42

1471

0.64

1790

1.23

2082

1.91

2800

1206

1436

0.53

1575

0.77

1864

1.38

2131

3100

1336

1559

0.65

1687

0.92

1948

1.54

2201

3400

1465

1684

0.79

1805

1.10

2034

1.72

3700

1594

1810

0.96

1926

1.30

2137

1.95

4000

1724

1938

1.15

2047

1.52

2242

4300

1853

2067

1.37

2170

1.76

4600

1982

2197

1.61

2294

4900

2112

2328

1.89

2420

5200

2241

2460

2.20

5500

2370

2592

5800

2500

2724

5

RPM

BHP

2.09

2392

2.88

2.29

2435

2275

2.51

2358

2.75

2.21

2443

2353

2.50

2.04

2471

2.34

2590

2546

2.67

2.55

2673

2.93

2802

6

7

RPM

BHP

RPM

BHP

3.11

2670

3.99

2884

4.93

2500

3.36

2713

4.28

2926

2570

3.64

2771

4.59

2968

3.01

2647

3.94

2841

4.92

2538

3.31

2730

4.26

2913

2.84

2641

3.67

2816

4.61

3.22

2746

4.05

2908

5.01

2710

3.64

2856

4.49

3011

3.04

2831

4.07

2973

4.99

3.45

2953

4.53

3092

5.53

8

RPM

BHP

RPM

BHP

5.25

3122

6.28

5.59

3164

3023

5.96

3207

6.66

3347

7.76

7.05

3389

5.29

3093

6.36

8.20

3261

7.48

3431

8.65

2995

5.67

3164

3080

6.09

3243

6.78

3331

7.94

7.24

3402

5.47

3165

6.53

3326

7.72

8.43

3115

5.96

3259

7.04

3411

8.23

3221

6.50

3362

7.61

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
1000

1400

2000

2700

3445

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
64
62
61
62
67
66
67
69
71
67
71
75
78
79
81
81
79
75
79
81

2
70
66
62
63
69
65
66
67
73
69
71
74
78
74
78
80
82
79
83
85

3
70
67
63
63
73
71
68
69
78
76
74
76
79
76
77
79
84
81
82
85

4
72
66
62
62
74
72
68
67
77
75
74
74
85
85
82
82
89
85
82
86

5
66
63
61
60
71
68
66
65
77
74
72
72
85
84
82
81
90
87
84
85

6
65
60
58
58
72
67
65
63
75
73
71
71
83
80
78
78
88
85
83
82

7
55
52
51
51
64
61
58
57
79
70
68
67
87
77
75
74
91
83
81
80

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
48
43
42
41
56
53
51
52
66
62
61
61
77
71
70
70
87
78
77
77

LWiA
73
68
65
65
78
75
71
71
84
79
77
77
91
88
85
85
96
91
89
90

RPM
1000

1400

2000

2700

3445

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
76
75
75
75
80
78
79
79
90
88
87
89
87
85
88
89
91
89
92
93

2
75
72
72
71
76
74
75
75
81
78
82
83
85
85
89
90
90
92
94
94

3
69
67
67
67
74
71
71
71
81
77
78
79
85
83
87
87
91
91
93
93

4
72
67
64
64
76
72
70
70
83
79
77
78
88
83
82
83
93
89
87
89

5
70
68
66
65
76
74
72
72
82
80
78
78
90
88
86
86
95
92
90
90

6
67
62
60
60
73
69
67
67
78
76
74
73
86
83
81
80
93
89
87
87

7
55
53
53
52
66
62
60
60
79
72
69
69
86
79
77
77
92
86
84
83

8
47
44
44
44
56
52
52
52
66
65
63
64
78
72
71
72
89
80
79
78

LWoA
74
71
69
68
80
77
75
75
87
84
82
82
94
90
89
89
100
96
94
94

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

23

QEI-16 Class I & QEI-L
QEI-16I
Performance Data

7

2300
2483

5

16

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV

7½

60% WOV

6
14

6

3

2

4
1

2

YS
TEM
CU
RVE

1½

¾

1/3

0
0

0

TH
EL
EF
TO
FT
HIS
S

8

4

DO

T
NO

S

80% WOV

23

23

00

71

20

00

90% WOV

TO

10

3

15

87

EL
EC
T

12

83

Maximum
QEI-L
184T
Motor 	
QEI
213T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
20 in.
508 mm
Approximate Weight QEI-L 160 lbs. 73 kg.
(Less Motor & Drives) QEI 220 lbs. 100 kg.
Maximum Bhp = (Fan RPM / 1387)3
Outlet Velocity (FPM) = CFM / 2.79
Tip Speed (FPM) = Fan RPM x 5.24
% WOV = (CFM x 100) / (Fan RPM x 3.36)
Imperial data — Metric data

70% WOV

5

24

Static Pressure (Pa x 100)

Specification Data

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

126

0

96

1

1

2

3

4

5

6

7

8

9

Volume (cfm x 1000)
0

2

4

6

8

10

12

14

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

2

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

2400

860

837

0.19

951

0.31

1169

0.59

1362

0.94

2800

1003

939

0.25

1039

0.39

1230

0.69

1411

1.05

1576

1.45

3200

1146

1046

0.33

1134

0.48

1307

0.81

1471

1.18

1625

1.60

1770

2.06

1904

2.54

3600

1290

1155

0.43

1235

0.59

1389

0.95

1538

1.33

1684

1.77

1820

2.25

1950

2.76

2073

3.29

2188

3.85

4000

1433

1266

0.55

1338

0.72

1479

1.11

1616

1.52

1747

1.96

1879

2.46

2002

2.99

2119

3.55

2233

4.13

4400

1577

1378

0.69

1445

0.88

1573

1.29

1700

1.73

1824

2.20

1940

2.69

2062

3.25

2174

3.83

2280

4.43

4800

1720

1492

0.85

1554

1.06

1673

1.50

1789

1.97

1901

2.46

2016

2.98

2121

3.52

2234

4.13

2338

4.76

5200

1863

1607

1.05

1664

1.27

1774

1.74

1880

2.24

1989

2.76

2093

3.30

2198

3.87

2294

4.46

2399

5.11

5600

2007

1722

1.27

1774

1.51

1878

2.01

1979

2.54

2078

3.09

2177

3.65

2274

4.25

2371

4.86

2461

5.49

6000

2150

1837

1.52

1886

1.77

1984

2.31

2080

2.87

2170

3.45

2265

4.04

2355

4.66

2447

5.29

6400

2293

1954

1.81

1999

2.08

2092

2.64

2181

3.23

2269

3.84

2355

4.47

2443

5.11

6800

2437

2070

2.14

2113

2.42

2201

3.01

2284

3.63

2369

4.27

2449

4.93

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
600

900

1250

1750

2483

24

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
65
64
62
62
65
64
63
66
71
69
68
69
73
69
75
80
80
80
78
81

2
62
61
60
60
67
64
63
65
78
78
71
73
75
76
77
80
80
75
77
80

3
60
59
57
57
68
65
63
63
73
70
68
69
81
76
77
77
88
84
80
82

4
57
55
53
53
65
62
60
60
72
68
66
65
80
77
75
75
88
85
82
81

5
57
55
54
54
61
58
57
57
69
65
65
64
77
73
71
71
86
81
79
78

6
52
52
52
52
62
56
55
55
67
62
61
60
75
71
70
70
83
79
77
77

7
47
47
47
47
51
50
49
49
67
57
57
55
75
66
66
66
81
74
74
74

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
34
35
35
35
43
41
41
41
51
49
50
50
62
59
60
60
84
69
70
70

LWiA
61
59
59
58
68
64
63
62
75
71
69
69
83
79
77
77
92
87
84
84

RPM
600

900

1250

1750

2483

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
75
70
71
72
74
76
76
77
80
78
77
79
82
79
83
86
91
88
88
90

2
66
65
64
64
73
73
72
73
80
75
75
76
82
78
80
82
86
84
88
89

3
60
60
59
59
67
65
64
65
74
72
72
72
81
77
77
79
88
82
85
86

4
59
58
57
57
68
66
65
65
74
71
69
69
83
79
77
77
90
85
83
84

5
60
58
58
57
65
63
62
62
72
70
68
68
81
78
76
75
90
87
84
84

6
55
55
55
55
63
60
59
59
70
66
65
65
78
74
73
72
87
84
81
81

7
51
51
51
51
55
55
54
54
68
61
60
60
76
69
68
68
83
78
77
77

8
39
39
40
40
46
46
46
46
54
54
55
55
65
62
62
63
85
72
72
72

LWoA
64
62
62
62
70
68
67
67
77
74
73
73
86
82
80
80
94
90
88
88

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-16 Class II
QEI-16II
Performance Data

12

Maximum Fan RPM

11

3145
25

20 in.

508 mm

240 lbs.

109 kg.

10

CU
RVE

7
6
5
4

3

2

Maximum Bhp = (Fan RPM / 1430)

1

5

Outlet Velocity (FPM) = CFM / 2.79

2
1

Tip Speed (FPM) = Fan RPM x 5.24

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 2.89)

80% WOV

24

44

DO

T
NO

62

18

01

S

14

30

10

9

8

7

6

5

4

3

2

1

90% WOV

20

TO

3

3

EL
EC
T

Approximate Weight
(Less Motor & Drives)

15

5

SY
ST
EM

Wheel Diameter

8

45

.25 kW

20

31

1/3 hp

70% WOV

9

97
27

Minimum Motor 	
Starting hp

7½

TH
EL
EF
TO
FT
H IS

215T

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

50% WOV
60% WOV

10

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

Specification Data

15

10

Volume (cfm x 1000)

Imperial data — Metric data
0

14

12

10

8

6

4

2

16

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

5

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

3000

1075

1199

0.50

1342

0.77

1633

1.48

1900

2.29

3300

1182

1291

0.61

1421

0.89

1688

1.62

1934

2.47

2176

3.41

3600

1290

1384

0.73

1503

1.03

1750

1.78

1987

2.66

2209

3.63

2424

4.68

3900

1397

1478

0.86

1592

1.20

1816

1.95

2041

2.88

2249

3.88

2456

4.96

2650

6.11

4200

1505

1574

1.01

1683

1.39

1887

2.16

2100

3.10

2302

4.14

2488

5.25

2682

6.44

2861

7.68

4500

1612

1670

1.18

1774

1.61

1965

2.39

2163

3.35

2356

4.42

2539

5.57

2715

6.78

2893

8.07

3060

9.40

4800

1720

1767

1.38

1867

1.83

2045

2.65

2229

3.61

2415

4.73

2592

5.91

2758

7.15

2926

8.46

3092

9.84

5100

1827

1865

1.59

1960

2.06

2128

2.94

2299

3.91

2478

5.05

2646

6.27

2811

7.55

2964

8.88

3124

10.3

5400

1935

1964

1.83

2054

2.33

2217

3.27

2377

4.26

2543

5.39

2707

6.65

2865

7.97

3017

9.34

5700

2043

2063

2.10

2149

2.62

2307

3.63

2457

4.63

2608

5.76

2770

7.05

2920

8.41

3071

9.82

6000

2150

2163

2.39

2245

2.93

2398

4.02

2537

5.03

2684

6.19

2835

7.48

2983

8.87

3125

10.3

6300

2258

2263

2.71

2341

3.27

2489

4.45

2623

5.48

2762

6.66

2900

7.93

3046

9.36

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
900

1250

1750

2475

3145

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
66
63
62
63
68
66
67
69
71
67
71
74
79
80
82
82
81
77
81
83

2
71
67
63
64
70
67
66
68
74
70
72
74
79
75
79
81
84
80
84
86

3
71
67
63
63
73
71
68
69
78
77
74
76
81
78
78
80
85
81
83
86

4
72
66
63
62
74
72
68
67
77
74
73
74
86
86
83
83
91
86
83
87

5
66
63
61
60
71
69
66
65
77
73
72
71
86
84
82
82
91
88
85
85

6
64
59
57
57
71
67
64
63
76
72
70
70
84
80
78
78
89
85
83
83

7
54
51
50
50
63
60
57
57
77
68
66
65
86
77
75
74
92
83
81
80

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
47
42
41
40
55
52
51
51
63
61
60
60
77
71
70
70
87
78
77
77

LWiA
72
68
65
65
77
74
71
70
83
79
77
77
92
88
86
86
97
92
90
90

RPM
900

1250

1750

2475

3145

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
77
75
75
75
80
78
79
78
88
86
86
88
88
86
89
90
92
90
93
94

2
76
73
73
72
76
74
74
75
81
78
81
82
86
86
90
91
91
93
95
95

3
70
67
67
67
75
71
71
71
82
77
78
79
86
84
87
87
92
91
93
94

4
72
67
65
64
77
73
71
70
83
79
77
78
89
84
83
84
94
90
88
90

5
70
67
65
65
76
73
72
71
81
79
77
77
91
88
86
86
96
93
91
91

6
66
61
60
59
72
68
66
66
78
75
73
72
87
83
81
81
93
90
88
87

7
55
52
52
52
64
60
59
59
76
70
68
68
86
79
77
77
93
86
84
83

8
47
43
43
43
54
51
51
51
63
63
62
62
78
72
71
72
90
80
79
79

LWoA
74
71
69
68
79
76
75
75
86
83
81
81
95
91
90
89
100
97
95
95

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

25

QEI-18 Class I & QEI-L
QEI-18I
Performance Data

7

2232
2232

7½

16
6

60% WOV

5

6

CU
RVE
SY
ST
EM

80% WOV

HIS

3

TH
EL
EF
TO
FT

8

4

3
1½

2
¾

4
1

2

1/3

0
0

0

20

50

17

29

TO

10

DO

1

T
NO

90% WOV

13

EL
EC
T

12

32

Maximum
QEI-L
215T
Motor 	
QEI
215T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
22.5 in.
565 mm
Approximate Weight QEI-L 190 lbs. 87 kg.
(Less Motor & Drives) QEI 260 lbs. 118 kg.
Maximum Bhp = (Fan RPM / 1199)3
Outlet Velocity (FPM) = CFM / 3.45
Tip Speed (FPM) = Fan RPM x 5.83
% WOV = (CFM x 100) / (Fan RPM x 4.50)
Imperial data — Metric data

70% WOV

5

22

Static Pressure (Pa x 100)

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV

14

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

72

10

S

89

83

1

2

3

4

5

6

7

8

9

10

11

Volume (cfm x 1000)
0

2

4

6

8

10

12

14

16

18

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

2.5

RPM

BHP

RPM

BHP

BHP

3.5

4

RPM

BHP

RPM

BHP

RPM

BHP

2600

753

697

0.17

814

0.30

1026

0.62

3100

898

788

0.23

889

0.37

1080

0.72

1250

1.12

1407

1.57

3600

1043

886

0.31

972

0.46

1142

0.84

1300

1.26

1445

1.73

1583

2.24

4100

1188

986

0.42

1062

0.58

1213

0.97

1358

1.43

1494

1.92

1622

2.45

1746

3.03

1861

3.63

4600

1333

1088

0.54

1156

0.72

1293

1.13

1425

1.61

1552

2.14

1672

2.70

1785

3.28

1899

3.91

2006

4.57

5100

1478

1192

0.69

1254

0.89

1376

1.32

1498

1.81

1616

2.37

1730

2.96

1839

3.58

1940

4.22

2044

4.91

5600

1623

1298

0.87

1355

1.09

1466

1.55

1578

2.06

1686

2.62

1793

3.25

1897

3.91

1997

4.58

2090

5.28

6100

1768

1405

1.08

1456

1.32

1558

1.81

1660

2.33

1763

2.92

1862

3.56

1959

4.25

2055

4.96

2148

5.69

6600

1913

1513

1.33

1558

1.58

1653

2.11

1748

2.66

1843

3.26

1936

3.91

2029

4.62

2118

5.37

2206

6.14

7100

2057

1620

1.62

1662

1.88

1752

2.44

1840

3.02

1926

3.63

2016

4.31

2100

5.02

2187

5.79

7600

2202

1729

1.94

1768

2.23

1851

2.82

1932

3.43

2015

4.07

2097

4.75

2180

5.49

8100

2347

1837

2.31

1875

2.61

1952

3.24

2028

3.88

2106

4.56

2182

5.25

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
550

800

1100

1600

2232

26

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
65
61
60
62
66
62
61
64
70
64
66
69
77
76
78
79
80
74
80
83

2
68
67
67
67
70
66
64
64
78
78
73
73
80
75
77
78
83
78
79
82

3
68
68
68
67
69
68
66
66
73
73
70
70
87
80
83
82
92
87
82
83

4
64
64
64
64
64
62
60
59
72
69
67
66
82
78
75
76
89
85
82
82

5
57
56
56
56
59
58
55
55
67
64
62
61
78
74
71
70
87
85
82
81

6
52
52
52
51
61
56
55
54
68
62
61
61
75
72
70
69
84
81
78
77

7
49
48
48
48
49
49
49
48
66
57
57
56
77
67
66
66
81
76
74
74

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
41
40
39
39
41
40
40
40
53
51
52
52
64
61
62
62
83
71
70
71

LWiA
65
65
65
64
67
65
63
63
75
71
69
69
85
80
79
78
92
89
86
85

RPM
550

800

1100

1600

2232

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
74
72
69
69
74
71
72
72
77
73
75
77
82
78
82
86
88
83
88
93

2
74
73
72
72
75
73
70
70
84
80
77
77
83
83
82
84
87
83
89
92

3
67
68
67
67
68
66
66
65
75
70
69
70
84
80
77
78
91
85
83
85

4
66
68
67
67
67
65
63
63
74
71
69
69
84
80
78
78
93
89
87
86

5
63
62
62
62
64
63
62
61
72
69
67
66
83
80
77
76
92
90
88
87

6
55
56
56
56
62
58
57
57
68
64
63
62
77
75
74
73
87
85
82
81

7
53
56
56
57
54
54
54
54
65
59
58
58
75
70
69
69
82
79
77
76

8
45
50
51
52
43
43
43
43
51
50
50
51
64
64
64
64
82
72
71
72

LWoA
68
68
68
68
70
68
66
66
77
74
72
71
87
83
81
81
95
93
91
90

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-18 Class II
QEI-18II
Performance Data

12

Maximum Fan RPM

11

15

10

2777

60% WOV

25

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

50% WOV

10

310 lbs.

141 kg.

10

UR
VE

YS
TE
MC

Approximate Weight
(Less Motor & Drives)

15

HIS
S

565 mm

6
5

3

4

2

5

Outlet Velocity (FPM) = CFM / 3.45

2

SE
LE
CT

Maximum Bhp = (Fan RPM / 1219)

1

1

Tip Speed (FPM) = Fan RPM x 5.83

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 3.80)

20

83

TO

3

3

80% WOV

TH
EL
EF
TO
FT

22.25 in.

5

24

Wheel Diameter

7

26

.25 kW

8

77

1/3 hp

20

70% WOV

27

Minimum Motor 	
Starting hp

Static Pressure (in. wg)

254T

9

85
23

Static Pressure (Pa x 100)

7½

Maximum Motor 	
Frame Size

DO

1

57

15

T
NO

90% WOV

17
35

121

9

2

3

10

9

8

7

6

5

4

11

Volume (cfm x 1000)

Imperial data — Metric data

15

10

5

0

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

7

RPM

BHP

RPM

BHP

8

RPM

BHP

RPM

BHP

3800

1101

1124

0.64

1239

0.97

1467

1.74

1690

2.65

1900

3.67

4200

1217

1219

0.79

1326

1.14

1538

1.98

1738

2.88

1934

3.94

2120

5.09

2290

6.31

4600

1333

1315

0.96

1414

1.34

1609

2.25

1787

3.15

1977

4.24

2154

5.42

2323

6.69

2478

8.02

5000

1449

1413

1.16

1503

1.56

1682

2.50

1858

3.50

2024

4.56

2193

5.78

2356

7.09

2511

8.47

2656

9.91

5400

1565

1511

1.40

1595

1.82

1758

2.77

1929

3.89

2079

4.94

2241

6.18

2394

7.51

2545

8.93

2689

10.4

5800

1681

1611

1.66

1690

2.11

1844

3.11

2001

4.29

2150

5.42

2289

6.60

2441

7.98

2582

9.42

2723

10.9

6200

1797

1711

1.96

1786

2.44

1932

3.48

2075

4.66

2221

5.94

2354

7.14

2489

8.48

2629

9.97

2760

11.5

6600

1913

1812

2.29

1883

2.81

2020

3.89

2150

5.07

2293

6.50

2424

7.76

2544

9.06

2676

10.5

7000

2028

1913

2.66

1981

3.21

2110

4.34

2236

5.57

2366

6.98

2495

8.42

2615

9.77

2726

11.2

7400

2144

2015

3.07

2079

3.66

2200

4.83

2323

6.12

2440

7.49

2568

9.11

2686

10.5

7800

2260

2117

3.53

2178

4.16

2295

5.38

2411

6.70

2521

8.10

2641

9.71

2757

11.3

8200

2376

2219

4.03

2277

4.70

2390

5.98

2500

7.34

2608

8.78

2715

10.4

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
800

1100

1600

2200

2777

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
66
63
62
77
70
62
63
66
78
71
73
77
81
75
79
83
85
80
84
87

2
75
71
69
73
78
73
72
72
79
76
76
77
84
78
81
83
88
83
86
89

3
67
64
63
69
72
68
66
67
82
77
74
76
89
83
84
84
89
85
85
89

4
66
63
61
65
72
67
66
65
80
75
73
73
88
83
81
81
93
89
88
88

5
63
62
62
62
68
66
65
64
78
74
72
72
87
82
79
78
93
90
87
86

6
65
62
63
62
72
66
66
65
76
73
72
71
84
80
78
77
90
87
85
84

7
51
51
53
50
60
57
57
56
80
67
67
66
87
76
75
74
91
82
80
80

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
41
42
41
51
48
49
49
64
60
61
61
78
69
71
70
87
76
76
76

LWiA
70
67
67
68
76
71
71
70
85
79
77
77
93
87
85
85
98
93
91
91

RPM
800

1100

1600

2200

2777

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
73
70
70
70
78
73
75
77
87
84
85
86
89
85
89
91
93
88
94
96

2
79
76
74
75
83
77
75
77
86
80
80
82
89
86
88
89
94
91
94
95

3
66
63
63
63
74
69
68
70
83
77
77
78
91
85
86
88
93
89
92
92

4
69
67
65
65
76
73
71
71
85
81
79
79
92
88
86
87
96
92
89
91

5
68
66
66
65
74
72
71
70
84
80
78
77
91
89
87
86
97
94
92
92

6
66
63
63
62
72
68
68
68
78
75
74
74
86
83
82
81
93
90
88
88

7
54
53
53
53
63
60
60
60
79
70
70
69
86
79
78
77
91
86
84
84

8
45
46
46
47
53
50
52
53
64
61
62
62
80
73
73
73
88
79
79
79

LWoA
72
70
70
69
79
76
74
75
88
84
82
82
96
92
90
90
101
97
95
96

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

27

QEI-20 Class I & QEI-L
QEI-20 Class 1
Performance Data

6

1900
2027

60% WOV

5

5

HIS
SY
STE
MC

3

FT

2

TO
TH
EL
EF

46

2

1

73

12

2

½

DO

0

0
0

87

SE
LE
CT

1

1

90% WOV

14

TO

4

80% WOV

00

6

3

70% WOV

27
20

8

4

17

Static Pressure (Pa x 100)

10

19

Maximum
QEI-L
215T
Motor 	
QEI
215T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
24.5 in.
622 mm
Approximate Weight QEI-L 230 lbs. 105 kg.
(Less Motor & Drives) QEI 310 lbs. 141 kg.
Maximum Bhp = (Fan RPM / 1021)3
Outlet Velocity (FPM) = CFM / 4.14
Tip Speed (FPM) = Fan RPM x 6.41
% WOV = (CFM x 100) / (Fan RPM x 6.01)
Imperial data — Metric data

10

UR
VE

12

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV

7½

14

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

10

21

T
NO

818

2

3

4

5

6

7

8

9

10

11

12

13

Volume (cfm x 1000)
0

5

10

15

20

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5
BHP

RPM

BHP

3.5

4

RPM

BHP

RPM

BHP

RPM

BHP

3000

724

613

0.19

724

0.35

923

0.73

3700

893

708

0.27

801

0.44

975

0.86

1132

1.34

4400

1062

810

0.39

887

0.57

1040

1.02

1183

1.54

1314

2.11

1440

2.73

5100

1231

915

0.53

982

0.74

1116

1.21

1245

1.78

1368

2.38

1480

3.03

1593

3.73

1697

4.47

5800

1400

1023

0.72

1082

0.95

1201

1.45

1317

2.03

1428

2.70

1538

3.38

1637

4.11

1738

4.88

1835

5.69

6500

1570

1133

0.95

1187

1.20

1292

1.74

1398

2.34

1501

3.03

1599

3.78

1697

4.54

1789

5.34

1875

6.17

7200

1739

1245

1.23

1292

1.50

1388

2.09

1483

2.71

1577

3.41

1671

4.19

1759

5.02

1849

5.86

1934

6.74

7900

1908

1357

1.56

1400

1.86

1486

2.49

1574

3.15

1662

3.88

1746

4.66

1832

5.52

1913

6.42

1994

7.35

8600

2077

1470

1.96

1508

2.28

1590

2.95

1669

3.66

1748

4.40

1830

5.22

1907

6.07

1985

7.02

9300

2246

1584

2.41

1619

2.76

1694

3.48

1766

4.23

1842

5.01

1915

5.84

1990

6.74

10000

2415

1698

2.94

1731

3.32

1800

4.08

1868

4.88

1937

5.71

2005

6.56

10700

2584

1812

3.55

1843

3.95

1907

4.76

1972

5.60

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
500

700

1000

1450

2027

28

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
66
63
62
64
66
62
61
63
72
67
68
71
79
77
79
80
82
76
81
84

2
69
69
69
68
70
67
65
65
79
79
74
74
82
77
79
80
85
80
81
83

3
68
68
68
68
68
67
65
65
74
73
70
70
87
81
82
82
93
88
83
84

4
64
64
64
64
63
62
59
59
72
69
67
66
82
78
76
76
90
86
83
83

5
57
56
56
56
60
57
55
55
68
65
63
62
78
75
71
71
88
85
82
81

6
53
52
52
52
59
55
54
53
69
62
61
61
76
72
70
69
84
81
78
77

7
49
48
48
48
48
48
47
47
65
57
57
57
76
67
66
66
82
76
74
74

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
40
40
39
39
40
38
39
38
52
51
52
52
63
61
63
63
84
71
71
71

LWiA
65
65
65
65
66
64
62
62
75
72
70
69
85
80
79
79
93
89
86
86

RPM
500

700

1000

1450

2027

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
75
73
71
70
74
72
71
71
79
75
76
78
83
79
83
86
89
84
89
93

2
74
73
72
72
74
72
69
69
84
80
77
77
84
82
81
83
89
84
89
92

3
68
68
68
68
68
66
65
65
75
71
70
70
85
81
78
79
92
86
85
86

4
67
68
68
67
66
64
63
62
75
72
70
69
85
81
79
79
93
90
88
87

5
62
62
62
62
64
62
61
61
72
70
67
67
83
80
78
76
92
90
88
87

6
56
56
57
57
60
58
57
56
68
64
63
63
77
75
74
73
87
85
82
81

7
53
56
56
57
52
52
52
52
64
58
58
58
74
69
69
69
83
79
77
76

8
45
50
51
52
41
41
41
41
50
50
50
51
63
63
64
64
83
72
72
72

LWoA
68
69
68
68
69
67
66
65
77
74
72
72
87
84
82
81
96
93
91
90

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-20 Class II
QEI-20II
10

Performance Data

15

10

2517

7½

Approximate Weight
(Less Motor & Drives)

360 lbs.

163 kg.

10

Maximum Bhp = (Fan RPM / 1038)

3

YST
EM
CU
RVE

622 mm

5

6
5

3

4
3

5

1½

2

Outlet Velocity (FPM) = CFM / 4.14

1

Tip Speed (FPM) = Fan RPM x 6.41

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 5.07)

80% WOV

HIS
S

24.5 in.

Static Pressure (in. wg)

Wheel Diameter

15

17

.25 kW

35

1/3 hp

DO

1

30
20

Minimum Motor 	
Starting hp

70% WOV

7

25

254T

8

22

Static Pressure (Pa x 100)

20

TH
EL
EF
TO
FT

Specification Data
Maximum Motor 	
Frame Size

60% WOV

SE
LE
CT
TO

Maximum Fan RPM

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

50% WOV

9

17

74

90% WOV

14

97

118

8

T
NO

7

6

5

4

3

2

9

8

10

12

11

13

Volume (cfm x 1000)

Imperial data — Metric data

20

15

10

5

0

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

8

RPM

BHP

RPM

BHP

RPM

BHP

4500

1076

1002

0.74

1110

1.14

1319

2.05

1526

3.15

1719

4.38

5000

1196

1090

0.92

1189

1.34

1384

2.34

1570

3.44

1750

4.71

1920

6.10

5500

1315

1181

1.13

1271

1.58

1451

2.67

1615

3.75

1788

5.08

1951

6.51

2105

8.04

2246

9.65

6000

1435

1272

1.38

1355

1.86

1519

2.99

1679

4.19

1833

5.48

1986

6.95

2136

8.53

2277

10.2

2408

11.9

6500

1555

1364

1.66

1440

2.18

1589

3.32

1745

4.67

1882

5.94

2031

7.44

2170

9.05

2308

10.8

2439

12.6

7000

1674

1457

1.99

1529

2.54

1670

3.74

1813

5.18

1948

6.53

2075

7.96

2214

9.64

2342

11.4

2471

13.2

7500

1794

1551

2.36

1619

2.95

1751

4.20

1882

5.64

2015

7.18

2135

8.64

2258

10.3

2386

12.1

2505

13.9

8000

1913

1645

2.77

1710

3.40

1834

4.72

1953

6.14

2082

7.88

2201

9.40

2310

11.0

2430

12.8

8500

2033

1740

3.24

1801

3.91

1918

5.28

2033

6.77

2151

8.48

2268

10.2

2376

11.9

2477

13.5

9000

2153

1835

3.75

1893

4.48

2003

5.90

2115

7.45

2220

9.12

2336

11.1

2443

12.8

9500

2272

1930

4.33

1986

5.10

2092

6.59

2197

8.20

2297

9.89

2404

11.8

2510

13.8

10000

2392

2026

4.96

2079

5.78

2181

7.34

2280

9.00

2378

10.7

2474

12.6

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
700

1000

1450

2000

2517

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
68
65
64
76
72
64
65
68
79
73
75
78
82
76
81
84
88
82
86
89

2
74
70
68
72
80
75
74
74
80
77
77
78
86
80
83
84
89
85
87
90

3
67
64
62
68
73
69
67
68
82
77
75
77
91
85
85
85
90
86
85
90

4
66
63
61
65
72
68
67
66
81
76
73
74
89
84
81
82
94
90
89
89

5
64
62
62
62
70
67
66
65
79
75
72
72
87
83
80
79
94
91
87
87

6
62
60
61
60
71
65
65
65
77
73
72
71
85
80
78
78
90
87
85
85

7
49
49
51
48
60
56
57
56
79
67
67
67
87
76
75
75
92
82
80
80

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
42
39
40
40
51
48
49
49
63
59
61
61
78
69
71
71
87
76
76
77

LWiA
69
66
66
68
76
72
71
71
85
79
78
78
93
87
86
85
99
94
92
92

RPM
700

1000

1450

2000

2517

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
74
71
71
71
80
75
76
78
88
84
85
86
90
86
90
92
95
90
95
97

2
76
73
72
72
85
78
77
79
86
81
80
82
90
87
88
90
94
92
94
96

3
66
64
63
64
75
70
69
71
84
78
78
79
92
87
87
89
93
89
92
93

4
69
67
65
65
76
74
71
71
86
82
80
79
93
89
87
87
97
93
90
92

5
67
66
65
65
75
72
71
71
83
81
79
78
91
89
87
86
98
96
93
93

6
63
61
61
61
72
68
68
68
79
75
74
74
87
83
82
82
93
90
88
88

7
52
52
52
52
63
60
60
60
77
70
69
69
86
79
78
78
92
86
85
84

8
43
44
45
46
52
50
52
52
63
61
62
62
80
73
73
73
89
79
79
79

LWoA
71
70
69
69
79
76
75
75
88
84
83
82
96
92
90
90
102
98
96
96

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

29

QEI-22 Class I & QEI-L
QEI-22I
Performance Data

6

1800
1839

14

10

7½

RPM
BHP
% WOV
Density 0.075 lb/ft3
Density 1.2 kg/m3

50% WOV
60% WOV

5

12

UR
VE
OF
TH
IS
SY
ST E
MC

3
2

2

4

14

65

½

0
0

0

DO

36

10

SE
LE
CT

1

90% WOV

12

TO

1

2

80% WOV

77

6

3

LE
FT

8

4

TH
E

10

70% WOV

16

Maximum
QEI-L
215T
Motor 	
QEI
254T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
27 in.
686 mm
Approximate Weight QEI-L 270 lbs. 123 kg.
(Less Motor & Drives) QEI 370 lbs. 168 kg.
Maximum Bhp = (Fan RPM / 857)3
Outlet Velocity (FPM) = CFM / 5.12
Tip Speed (FPM) = Fan RPM x 7.07
% WOV = (CFM x 100) / (Fan RPM x 8.60)
Imperial data — Metric data

5

39
18 00
18

Static Pressure (Pa x 100)

Specification Data

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

80

85

T
NO

68

7

0

2

4

6

8

10

12

14

16

Volume (cfm x 1000)
0

5

10

15

20

25

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5
BHP

RPM

BHP

3.5

RPM

BHP

4

RPM

BHP

RPM

BHP

3900

762

564

0.25

662

0.44

837

0.93

4700

918

641

0.34

725

0.55

883

1.07

1023

1.68

5500

1075

723

0.45

796

0.69

935

1.25

1066

1.90

1184

2.61

1301

3.38

6300

1231

806

0.60

872

0.87

997

1.46

1116

2.14

1228

2.90

1329

3.72

1434

4.58

7100

1388

892

0.79

953

1.08

1065

1.72

1173

2.43

1277

3.22

1376

4.08

1466

4.99

1560

5.94

1650

6.93

7900

1544

979

1.02

1035

1.33

1137

2.01

1236

2.77

1332

3.60

1425

4.49

1515

5.44

1598

6.44

1678

7.47

8700

1700

1068

1.29

1118

1.62

1213

2.35

1305

3.15

1394

4.02

1480

4.94

1564

5.93

1646

6.97

1723

8.05

9500

1857

1156

1.61

1204

1.97

1293

2.75

1377

3.59

1458

4.49

1541

5.46

1619

6.48

1696

7.54

1772

8.67

10300

2013

1246

1.98

1290

2.37

1374

3.20

1451

4.08

1529

5.03

1603

6.03

1680

7.09

1751

8.19

1822

9.34

11100

2170

1335

2.41

1377

2.83

1456

3.70

1530

4.64

1602

5.63

1673

6.67

1742

7.76

1813

8.91

11900

2326

1426

2.90

1465

3.35

1539

4.27

1610

5.26

1676

6.29

1745

7.38

1809

8.51

12700

2482

1516

3.46

1554

3.94

1624

4.91

1691

5.95

1755

7.03

1818

8.16

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
450

650

900

1300

1839

30

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
68
67
66
67
70
67
67
68
73
69
70
72
76
72
74
78
81
79
80
84

2
69
68
67
68
75
75
74
73
79
76
73
74
89
91
83
83
86
82
82
84

3
64
62
60
60
70
68
65
65
78
77
74
74
85
83
79
79
99
95
87
86

4
60
59
58
58
67
64
62
62
74
71
68
67
83
79
76
75
94
92
87
86

5
59
57
56
55
64
61
59
58
71
68
66
65
81
78
74
73
91
87
84
82

6
59
59
58
58
65
61
60
60
72
66
63
62
78
75
71
69
88
84
81
79

7
52
52
52
52
54
54
53
53
61
58
56
55
79
69
65
64
88
80
76
75

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
38
38
38
38
43
41
41
41
53
50
50
49
65
61
61
62
77
72
71
71

LWiA
65
64
63
63
70
68
66
66
78
74
72
71
87
83
79
78
97
93
89
87

RPM
450

650

900

1300

1839

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
71
71
69
72
78
76
75
75
77
73
74
77
83
81
84
88
87
86
91
94

2
71
70
69
70
75
74
74
74
83
80
78
79
84
82
81
83
89
84
89
91

3
65
63
62
61
70
70
69
69
77
74
72
72
84
80
78
79
91
90
87
88

4
64
63
62
61
69
69
67
65
78
76
72
71
86
83
79
78
96
92
89
88

5
65
64
64
64
67
67
66
65
75
73
71
70
85
82
77
76
93
90
87
85

6
62
62
62
62
66
65
65
65
73
69
67
66
81
77
72
71
90
87
83
81

7
56
57
57
57
57
58
58
58
64
62
60
60
79
71
66
65
88
82
78
76

8
44
44
44
45
47
47
48
48
53
51
51
51
64
60
59
60
79
72
71
71

LWoA
69
68
68
68
72
72
71
71
80
78
75
74
89
85
81
81
98
94
91
90

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-22 Class II
QEI-22II
10

Performance Data
Maximum Fan RPM

15

2265

20

10

60% WOV

70% WOV

420 lbs.

191 kg.

10

CU
RVE

EF
TO
FT
HIS
SY
STE
M

686 mm

4
2

17

00

5

2

SE
LE
CT

Maximum Bhp = (Fan RPM / 869)3

85

10

95

NO

T

Outlet Velocity (FPM) = CFM / 5.12

90% WOV

14

TO

27 in.

5

41

Wheel Diameter
Approximate Weight
(Less Motor & Drives)

6

21

.25 kW

80% WOV
65

1/3 hp

15

71
18

Minimum Motor 	
Starting hp

7½

Static Pressure (in. wg)

256T

8

22

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

20

TH
EL

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

Tip Speed (FPM) = Fan RPM x 7.07

DO

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 7.17)

12

10

8

6

4

2

18

16

14

Volume (cfm x 1000)

Imperial data — Metric data
0

30

25

20

15

10

5

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

5

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

5600

1093

882

0.81

982

1.29

1174

2.43

1360

3.80

6200

1210

956

1.00

1045

1.51

1222

2.69

1395

4.11

1564

5.70

6800

1328

1032

1.22

1115

1.75

1273

2.97

1434

4.43

1588

6.07

1746

7.86

7400

1445

1109

1.47

1185

2.03

1335

3.32

1480

4.81

1626

6.49

1762

8.32

1912

10.3

8000

1562

1187

1.76

1257

2.34

1396

3.71

1531

5.22

1666

6.94

1801

8.83

1925

10.8

2065

13.0

2195

15.2

8600

1679

1265

2.09

1331

2.71

1459

4.13

1588

5.69

1714

7.45

1840

9.37

1962

11.4

2078

13.6

2209

15.9

9200

1796

1345

2.46

1407

3.12

1528

4.60

1649

6.23

1764

8.00

1882

9.96

2001

12.1

2113

14.3

2222

16.6

9800

1914

1425

2.87

1483

3.58

1598

5.11

1711

6.81

1820

8.61

1932

10.6

2040

12.8

2152

15.0

2257

17.4

10400

2031

1505

3.33

1560

4.10

1668

5.68

1773

7.45

1881

9.32

1982

11.3

2088

13.5

2192

15.8

11000

2148

1586

3.84

1637

4.66

1740

6.29

1841

8.13

1942

10.1

2039

12.1

2138

14.3

2237

16.7

11600

2265

1667

4.40

1715

5.28

1813

6.96

1910

8.87

2005

10.9

2100

13.0

2189

15.2

12200

2382

1749

5.02

1794

5.96

1888

7.72

1980

9.66

2068

11.8

2161

13.9

2249

16.2

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
650

900

1300

1800

2265

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
66
64
64
67
70
68
70
73
75
71
75
79
81
76
82
85
85
79
85
87

2
75
72
70
72
79
73
71
75
80
76
76
83
85
79
82
87
88
82
87
92

3
70
67
65
66
73
69
69
70
89
85
80
86
93
90
87
90
94
89
88
93

4
65
62
60
61
71
68
66
66
82
79
76
76
89
85
83
83
95
91
88
89

5
63
62
60
60
69
66
65
65
79
76
74
73
88
85
82
81
94
91
87
87

6
64
59
59
59
73
66
65
65
76
73
71
71
84
81
78
78
91
87
84
83

7
51
51
51
52
60
59
59
59
79
68
66
66
87
77
74
74
91
83
80
80

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
41
41
41
52
49
50
50
63
60
61
61
78
69
70
70
89
76
77
77

LWiA
70
67
65
66
77
72
71
71
86
82
79
81
94
89
87
87
99
95
91
92

RPM
650

900

1300

1800

2265

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
74
73
73
75
77
73
74
81
82
79
81
82
87
82
86
88
92
87
92
93

2
79
78
77
78
80
76
76
79
84
79
82
84
89
86
90
91
94
88
93
94

3
68
66
65
66
74
70
70
71
85
80
80
80
92
88
89
90
96
92
92
93

4
69
67
65
65
75
73
71
71
86
84
81
81
92
92
88
88
98
93
92
92

5
66
65
64
64
72
71
69
70
82
80
78
77
91
89
86
86
96
92
91
91

6
64
64
63
63
72
68
68
68
77
75
74
74
86
84
81
81
92
89
87
87

7
55
59
59
58
64
63
63
64
78
71
70
70
86
80
79
79
91
85
83
83

8
45
49
48
47
54
52
53
54
67
65
65
65
80
71
72
72
90
78
77
78

LWoA
72
71
70
70
78
76
74
75
88
85
83
83
95
93
91
91
101
96
95
95

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

31

QEI-24 Class I & QEI-L
QEI-24I
Performance Data

6
14

MC
UR
VE
SY
STE

3

12

29

0
0

0

37

EC
T

1

2

¾

DO

T
NO

90% WOV

10

TO

1½

49

2

4

TH
EL
EF
TO
FT
HIS

3

80% WOV
55

6

5

16

8

4

50
14 407
1

Static Pressure (Pa x 100)

10

70% WOV

15

Maximum
QEI-L
215T
Motor 	
QEI
254T
Frame Size
Minimum Motor 	
1/3 hp
.25 kW
Starting hp
Wheel Diameter
30 in.
762 mm
Approximate Weight QEI-L 400 lbs. 182 kg.
(Less Motor & Drives) QEI 470 lbs. 213 kg.
Maximum Bhp = (Fan RPM / 719)3
Outlet Velocity (FPM) = CFM / 6.21
Tip Speed (FPM) = Fan RPM x 7.85
% WOV = (CFM x 100) / (Fan RPM x 11.8)
Imperial data — Metric data

60% WOV

15

5

12

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV
10

7½

82

SE
L

1450
1655

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

3

65

3

2

4

6

8

10

12

14

16

18

20

Volume (cfm x 1000)
0

5

10

15

20

25

30

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

4600

740

494

0.28

584

0.52

748

1.11

5600

901

563

0.39

640

0.65

786

1.29

915

2.02

6600

1062

636

0.53

704

0.82

831

1.50

951

2.29

1060

3.16

7600

1223

712

0.71

772

1.03

888

1.76

996

2.59

1097

3.52

1191

4.51

1286

5.56

8600

1384

790

0.93

845

1.28

948

2.06

1047

2.94

1142

3.91

1231

4.96

1312

6.07

1400

7.24

1481

8.45

9600

1545

869

1.21

920

1.59

1013

2.42

1103

3.35

1190

4.36

1276

5.46

1357

6.63

1431

7.85

1507

9.12

10600

1706

949

1.54

996

1.95

1082

2.84

1165

3.82

1247

4.88

1324

6.02

1402

7.23

1475

8.51

1545

9.83

11600

1867

1030

1.93

1073

2.37

1154

3.33

1231

4.36

1304

5.46

1380

6.65

1450

7.90

1521

9.22

1589

10.6

12600

2028

1112

2.39

1152

2.86

1228

3.88

1298

4.96

1369

6.13

1436

7.35

1506

8.66

1570

10.0

1635

11.4

13600

2190

1193

2.91

1231

3.43

1303

4.50

1369

5.65

1435

6.87

1499

8.15

1562

9.49

1626

10.9

14600

2351

1275

3.52

1311

4.07

1378

5.21

1442

6.42

1502

7.69

1564

9.03

1623

10.4

15600

2512

1358

4.21

1392

4.80

1455

6.00

1516

7.27

1574

8.60

1631

9.99

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
400

600

850

1150

1655

32

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
69
68
66
67
72
70
69
71
76
72
72
74
79
76
76
79
83
80
81
85

2
69
68
67
67
76
75
75
74
81
79
75
77
91
92
85
84
89
85
84
85

3
64
62
60
60
71
69
66
66
80
79
76
76
85
83
79
79
100
95
88
87

4
61
59
58
58
68
65
63
63
76
73
69
68
83
80
76
75
95
92
88
86

5
60
58
57
56
65
62
60
60
73
70
67
66
81
78
74
73
91
88
84
82

6
58
58
58
58
65
61
61
61
73
67
65
63
79
74
70
69
89
85
81
79

7
50
50
50
50
55
54
53
53
62
59
57
57
77
68
65
64
87
80
76
75

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
36
36
37
36
43
41
41
41
55
51
51
51
63
60
61
63
76
72
71
71

LWiA
65
64
63
63
71
69
67
67
79
76
73
73
87
83
79
78
97
94
89
88

RPM
400

600

850

1150

1655

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
72
70
72
79
77
77
77
80
76
77
79
83
82
84
87
88
87
91
94

2
71
70
69
69
76
75
75
75
84
81
79
80
85
83
82
84
90
86
89
91

3
65
63
63
62
72
71
70
70
79
76
74
74
85
81
78
79
92
91
88
89

4
65
64
63
63
71
70
68
67
80
78
74
73
86
83
79
79
96
92
90
89

5
65
64
64
64
68
68
67
66
77
75
73
72
84
81
77
76
94
90
87
86

6
62
62
62
62
67
66
66
65
75
70
68
68
81
76
72
71
91
87
83
81

7
55
55
55
56
58
58
58
59
65
63
61
61
77
69
65
65
88
81
78
76

8
43
43
43
43
47
47
48
48
54
52
52
52
62
59
58
59
78
71
70
71

LWoA
69
68
68
68
73
73
72
72
82
79
77
76
89
85
81
81
98
94
91
90

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-24 Class II
QEI-24II
10

Performance Data
2036

.55 kW

Wheel Diameter

30 in.

762 mm

550 lbs.

249 kg.

10

6

7½

5
5

4
3

Maximum Bhp = (Fan RPM / 729)

5

2

Outlet Velocity (FPM) = CFM / 6.21

1

Tip Speed (FPM) = Fan RPM x 7.85

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 9.84)

80% WOV

17

96

15

DO

T
NO

90% WOV

26

12

46

91

S

8

20

18

16

14

12

10

8

6

4

2

69

14

TO

2

3

EL
EC
T

Approximate Weight
(Less Motor & Drives)

SY
ST
EM
CU
RV
E

3/4 hp

15

36

Minimum Motor 	
Starting hp

70% WOV

10

7

Static Pressure (in. wg)

284T

8

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

20

Static Pressure (Pa x 100)

20

OF
TH
IS

Specification Data
Maximum Motor 	
Frame Size

25

TH
EL
EF
T

Maximum Fan RPM

20

15

9

Volume (cfm x 1000)

Imperial data — Metric data
0

25

20

15

10

5

30

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

5

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

6800

1075

784

0.97

875

1.56

1051

2.96

1222

4.64

7500

1186

847

1.18

928

1.80

1090

3.25

1248

4.99

1405

6.94

8200

1297

911

1.43

987

2.08

1133

3.57

1281

5.36

1420

7.37

1568

9.57

8900

1408

976

1.71

1046

2.39

1184

3.96

1318

5.78

1453

7.85

1580

10.1

1717

12.5

9600

1518

1042

2.03

1107

2.74

1236

4.39

1360

6.25

1486

8.36

1607

10.7

1728

13.1

1854

15.7

10300

1629

1108

2.40

1169

3.15

1289

4.87

1405

6.76

1523

8.92

1641

11.3

1751

13.8

1865

16.5

1983

19.3

11000

1740

1176

2.81

1233

3.60

1345

5.39

1457

7.36

1566

9.54

1674

11.9

1784

14.5

1885

17.2

1994

20.1

11700

1851

1244

3.26

1298

4.11

1404

5.97

1509

8.02

1609

10.2

1714

12.7

1817

15.3

1918

18.1

2013

21.0

12400

1962

1312

3.76

1363

4.67

1464

6.59

1562

8.72

1660

11.0

1757

13.5

1853

16.1

1951

19.0

13100

2072

1380

4.32

1428

5.29

1524

7.27

1617

9.48

1712

11.8

1800

14.3

1895

17.0

1985

19.9

13800

2183

1449

4.94

1494

5.97

1585

8.00

1675

10.3

1765

12.7

1851

15.3

1938

18.0

2026

20.9

14500

2294

1518

5.61

1561

6.72

1648

8.82

1734

11.2

1818

13.7

1903

16.3

1982

19.0

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
600

850

1150

1650

2036

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
69
67
66
69
73
71
72
76
76
72
76
80
83
78
84
86
86
80
87
89

2
76
73
71
73
81
76
74
78
82
78
77
84
87
82
84
89
89
84
88
94

3
71
68
66
67
75
71
71
72
88
85
80
85
95
92
89
91
96
91
89
94

4
66
64
61
62
73
70
68
68
82
79
76
76
90
86
84
84
96
92
89
89

5
65
63
61
62
71
68
67
67
79
76
74
73
89
86
83
82
95
92
88
87

6
64
59
59
60
74
67
67
67
77
73
71
71
86
82
79
78
91
88
84
84

7
52
51
51
52
61
60
61
60
77
67
66
66
87
77
75
75
92
83
80
80

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
41
41
41
53
50
51
51
61
59
60
61
78
69
71
71
90
76
77
77

LWiA
71
68
66
67
78
74
73
73
86
82
79
81
95
91
88
88
100
95
92
93

RPM
600

850

1150

1650

2036

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
76
76
75
76
79
75
76
83
83
80
81
83
88
84
88
89
94
88
93
94

2
79
78
77
78
82
78
79
81
84
80
82
83
90
87
91
92
95
89
94
95

3
70
68
67
67
76
73
72
73
86
81
81
81
94
90
91
91
97
93
93
94

4
70
68
67
66
77
75
73
73
86
83
81
81
94
93
89
89
99
94
93
93

5
67
67
66
65
74
73
71
71
82
80
78
77
92
90
87
87
97
93
91
91

6
65
65
64
64
74
70
69
69
78
75
74
74
87
84
82
82
93
89
87
87

7
56
59
59
59
65
64
65
65
77
71
70
70
87
80
79
80
92
85
83
83

8
45
49
49
47
55
53
54
55
65
64
65
65
81
72
72
73
91
77
77
78

LWoA
73
72
71
71
80
77
76
77
87
84
83
82
96
94
92
92
102
97
95
96

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

33

QEI-27 Class I & QEI-L
QEI-27I
Performance Data

6
14

YS
TEM
LE
FT
OF
T

05

3
3

24

12

TH
E

10

1

2

¾

0
0

0

DO

T
NO

2

90% WOV

69

TO

1½

80

2

4

80% WOV

HIS
S

5

12

6

4

15

8

70% WOV

47

Static Pressure (Pa x 100)

10

7½

13

Maximum
QEI-L
215T
Motor 	
QEI
256T
Frame Size
Minimum Motor 	
3/4 hp
.55 kW
Starting hp
Wheel Diameter
33 in.
838 mm
Approximate Weight QEI-L 470 lbs. 214 kg.
(Less Motor & Drives) QEI 540 lbs. 245 kg.
Maximum Bhp = (Fan RPM / 626)3
Outlet Velocity (FPM) = CFM / 7.54
Tip Speed (FPM) = Fan RPM x 8.64
% WOV = (CFM x 100) / (Fan RPM x 15.2)
Imperial data — Metric data

60% WOV

CU
RVE

5

12

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

50% WOV

15

10

90

2

SE
LE
CT

1280
1505

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

71

6

56

8

4

6

8

10

12

14

16

18

20

22

24

Volume (cfm x 1000)
0

5

10

15

20

25

30

35

40

RPM

BHP

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

2.5

RPM

BHP

RPM

BHP

950

3.36

BHP

3.5

4

RPM

BHP

RPM

BHP

5700

755

459

0.35

541

0.63

690

1.32

6900

915

524

0.48

594

0.79

724

1.53

843

2.40

8100

1074

593

0.65

651

0.98

767

1.79

875

2.72

976

3.75

1070

4.85

9300

1233

664

0.87

716

1.24

819

2.10

916

3.08

1009

4.17

1097

5.34

1182

6.58

1260

7.88

10500

1392

737

1.14

783

1.54

875

2.46

964

3.51

1050

4.64

1131

5.87

1208

7.17

1287

8.55

1359

9.98

11700

1551

811

1.47

853

1.91

933

2.88

1017

3.99

1096

5.19

1172

6.46

1246

7.83

1314

9.26

1386

10.8

12900

1710

886

1.88

924

2.35

999

3.38

1073

4.54

1148

5.81

1218

7.14

1287

8.55

1355

10.0

1418

11.6

14100

1870

962

2.35

997

2.86

1065

3.96

1131

5.15

1202

6.50

1269

7.90

1332

9.36

1396

10.9

1459

12.5

15300

2029

1038

2.91

1070

3.46

1133

4.62

1196

5.88

1259

7.25

1322

8.74

1384

10.3

1442

11.9

1500

13.5

16500

2188

1114

3.55

1144

4.14

1203

5.37

1262

6.70

1318

8.10

1379

9.64

1436

11.3

1494

12.9

17700

2347

1191

4.29

1219

4.92

1275

6.23

1329

7.61

1383

9.08

1436

10.6

1492

12.3

18900

2506

1268

5.13

1294

5.80

1346

7.18

1397

8.62

1449

10.2

1497

11.8

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
400

550

750

1100

1505

34

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
70
65
65
67
73
70
69
74
84
82
79
79
77
73
75
79
80
78
81
85

2
71
68
67
68
72
70
69
70
83
80
77
78
86
84
84
82
89
87
90
89

3
64
62
62
61
70
67
64
64
75
73
71
71
86
83
79
82
92
88
88
89

4
59
58
59
58
65
63
61
61
73
70
68
67
84
80
76
76
93
90
86
86

5
61
57
57
57
65
61
60
60
70
69
67
66
80
77
75
74
89
86
83
82

6
58
58
58
58
67
61
60
60
76
66
64
63
78
74
72
71
85
83
80
80

7
52
52
52
53
54
54
55
54
62
60
59
59
82
70
67
66
90
79
77
76

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
38
40
42
42
45
44
44
44
54
53
52
52
66
63
64
64
76
72
72
73

LWiA
65
64
63
64
71
67
66
66
79
74
72
71
88
83
80
80
95
91
89
88

RPM
400

550

750

1100

1505

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
70
69
69
68
78
75
74
73
85
85
83
83
85
81
84
87
88
86
91
93

2
70
68
69
68
73
71
70
71
82
80
79
79
89
86
87
88
91
89
89
92

3
65
63
63
62
71
68
67
66
77
75
74
74
86
82
81
83
93
90
88
90

4
67
65
64
64
71
69
67
66
79
76
75
73
89
86
83
82
97
94
91
92

5
62
59
59
59
67
65
65
64
74
72
71
71
84
81
78
78
93
90
87
87

6
60
61
61
61
67
65
64
64
75
68
67
66
81
77
75
74
89
87
84
83

7
55
57
57
56
56
57
57
56
64
62
61
61
82
72
69
68
89
83
81
80

8
44
45
45
45
46
47
47
46
55
53
53
52
66
63
63
64
79
73
72
72

LWoA
68
67
67
66
73
71
70
70
81
78
76
75
90
86
84
84
99
95
92
93

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-27 Class II
QEI-27II
10

Performance Data
1847

Maximum Bhp = (Fan RPM / 630)

3

CU
RVE
TEM

304 kg.

SY
S

670 lbs.

Approximate Weight
(Less Motor & Drives)

10

7½

5
4

LE
FT
OF
TH
IS

838 mm

5

3

5

2

Outlet Velocity (FPM) = CFM / 7.54

2

1

Tip Speed (FPM) = Fan RPM x 8.64

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 12.9)

80% WOV
47

33 in.

6

08

Wheel Diameter

1.1 kW

10

18

11⁄2 hp

70% WOV

17

Minimum Motor 	
Starting hp

15

15

15

52

13

DO

2

T
NO

90% WOV

32

10

77

79

S

4

6

4

56

12

TH
E

286T

7

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

8

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

20

TO

Specification Data

EL
EC
T

Maximum Fan RPM

30

25

20

9

10

8

14

12

16

18

20

22

24

Volume (cfm x 1000)

Imperial data — Metric data

40

30

20

10

0

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

8300

1100

727

1.21

807

1.89

967

3.57

1119

5.59

1265

7.80

9100

1206

782

1.45

854

2.16

1002

3.91

1147

5.98

1281

8.29

1410

10.8

7

RPM

BHP

8

RPM

BHP

RPM

BHP

9900

1312

839

1.73

906

2.49

1038

4.28

1175

6.41

1303

8.81

1427

11.4

1543

14.1

10700

1419

896

2.05

959

2.87

1082

4.71

1207

6.89

1331

9.34

1444

12.0

1560

14.8

1667

17.8

11500

1525

953

2.41

1012

3.28

1128

5.19

1243

7.42

1359

9.91

1472

12.7

1576

15.6

1684

18.6

1783

21.8

12300

1631

1011

2.82

1067

3.75

1174

5.71

1280

7.99

1392

10.6

1500

13.4

1602

16.4

1700

19.5

1800

22.7

13100

1737

1070

3.28

1123

4.26

1223

6.30

1325

8.65

1428

11.3

1529

14.1

1630

17.2

1723

20.4

1816

23.8

13900

1843

1130

3.78

1179

4.82

1275

6.97

1371

9.36

1464

12.0

1563

14.9

1658

18.0

1752

21.3

1839

24.8

14700

1949

1189

4.35

1236

5.44

1327

7.69

1417

10.1

1506

12.8

1599

15.8

1688

18.9

1780

22.3

15500

2055

1249

4.97

1293

6.12

1380

8.48

1464

11.0

1551

13.8

1635

16.7

1724

20.0

1809

23.3

16300

2161

1309

5.65

1351

6.86

1434

9.33

1515

11.9

1597

14.7

1676

17.8

1760

21.0

1843

24.5

17100

2267

1370

6.39

1409

7.67

1488

10.2

1566

12.9

1644

15.8

1721

18.9

1797

22.2

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
550

750

1100

1500

1847

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
81
79
76
74
73
65
67
68
78
74
74
78
83
78
80
83
85
82
89
89

2
72
71
68
68
80
73
70
71
90
89
84
83
86
80
80
83
90
83
86
89

3
67
64
62
63
75
71
70
69
84
80
76
77
95
91
87
86
97
91
90
91

4
64
62
61
61
72
68
65
65
83
79
75
74
91
87
83
83
97
92
89
89

5
68
62
62
62
71
68
67
67
81
78
77
76
89
85
82
81
96
92
89
88

6
62
58
59
59
77
62
62
62
83
73
72
71
86
80
79
78
92
87
85
84

7
50
50
51
51
58
56
56
56
78
67
67
67
89
76
75
75
94
84
82
81

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
44
45
45
53
49
50
51
65
61
62
63
75
70
71
72
84
77
78
78

LWiA
71
67
66
66
79
72
71
70
88
82
80
80
95
89
87
86
101
96
93
92

RPM
550

750

1100

1500

1847

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
83
82
79
79
79
76
75
77
85
81
83
84
90
85
89
91
96
91
97
97

2
74
72
69
70
81
76
73
75
92
84
82
84
91
86
88
90
95
90
94
96

3
4
70 71
67 70
65 68
65 67
78 79
75 77
72 74
71 73
88 89
84 86
81 83
81 82
96 96
91 94
88 91
90 90
100 101
98 98
94 95
96 95

5
68
66
65
65
74
72
71
70
84
82
79
79
92
89
87
86
99
96
93
92

6
64
62
62
62
75
67
66
66
84
77
75
74
89
85
82
82
94
91
88
88

7
55
56
56
56
62
61
61
61
78
69
68
68
90
79
77
77
94
86
83
83

8
45
45
45
45
55
53
52
53
67
62
63
64
77
72
72
73
86
79
79
79

LWoA
73
71
70
70
81
77
75
75
91
87
84
84
98
95
92
91
103
100
97
97

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

35

QEI-30 Class I & QEI-L
QEI-30I
Performance Data

6

1200
1360

SY
STE
M
TO
FT
HIS

5

2

4
1

1

DO

0
0

0

39

2

90% WOV

90

4

66

6

52

NO

T

2

11

TH
EL
EF

2

SE
LE
CT
TO

6

3

80% WOV

60

8

4

13

Static Pressure (Pa x 100)

10

70% WOV

00
12

Maximum
QEI-L
256T
Motor 	
QEI
284T
Frame Size
Minimum Motor 	
1 hp
.75 kW
Starting hp
Wheel Diameter
36.5 in.
927 mm
Approximate Weight QEI-L 630 lbs. 286 kg.
(Less Motor & Drives) QEI 850 lbs. 386 kg.
Maximum Bhp = (Fan RPM / 528)3
Outlet Velocity (FPM) = CFM / 9.31
Tip Speed (FPM) = Fan RPM x 9.56
% WOV = (CFM x 100) / (Fan RPM x 20.6)
Imperial data — Metric data

10

CU
RVE

5

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

20

12

Specification Data

50% WOV

15

14

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

9

4

6

8

10

12

14

16

18

20

22

24

26

28

30

Volume (cfm x 1000)
0

10

20

30

40

50

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

2.5

RPM

BHP

RPM

BHP

6900

748

412

0.42

487

0.76

622

1.60

8400

910

472

0.58

536

0.96

654

1.87

761

2.93

858

4.10

BHP

3.5

4

RPM

BHP

RPM

BHP

RPM

BHP

9900

1073

536

0.79

588

1.20

693

2.19

791

3.32

882

4.58

968

5.93

11400

1235

602

1.07

648

1.52

742

2.58

829

3.77

912

5.10

992

6.54

1069

8.06

1140

9.65

12900

1398

669

1.41

710

1.9

793

3.03

874

4.31

950

5.70

1024

7.21

1093

8.80

1164

10.5

1230

12.2

14400

1561

737

1.83

775

2.37

847

3.55

923

4.92

993

6.39

1062

7.95

1128

9.63

1190

11.4

1254

13.2

15900

1723

806

2.34

841

2.92

908

4.19

975

5.61

1042

7.17

1104

8.80

1167

10.5

1228

12.4

1285

14.3

17400

1886

876

2.94

908

3.57

969

4.92

1028

6.39

1092

8.04

1152

9.77

1209

11.6

1266

13.4

1323

15.4

18900

2048

947

3.65

975

4.33

1032

5.76

1088

7.31

1145

8.99

1202

10.8

1257

12.7

1310

14.7

20400

2211

1018

4.47

1044

5.20

1097

6.72

1150

8.35

1200

10.1

1254

12.0

1306

14.0

1358

16.0

21900

2374

1088

5.41

1113

6.19

1163

7.81

1212

9.51

1260

11.3

1307

13.2

1358

15.3

23400

2536

1160

6.49

1183

7.32

1230

9.03

1275

10.8

1321

12.7

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
350

500

700

950

1360

36

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
70
66
66
67
74
71
70
74
87
84
81
81
78
75
77
79
83
80
84
87

2
70
67
66
67
73
71
70
71
84
81
78
79
86
84
83
82
91
89
91
91

3
63
61
61
61
70
68
65
65
77
74
72
73
85
82
78
81
93
90
89
89

4
60
58
58
58
66
64
62
62
74
72
69
68
83
79
76
76
93
90
86
86

5
61
57
57
57
66
62
61
61
73
70
68
67
79
77
74
73
89
86
84
83

6
57
57
57
57
67
61
60
60
76
67
65
64
79
73
71
70
87
83
81
80

7
49
50
51
51
54
54
54
54
62
61
60
60
79
68
67
66
88
79
77
76

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
36
38
40
40
44
43
44
43
55
53
53
53
62
61
63
63
75
72
73
73

LWiA
65
63
63
63
72
68
67
66
80
75
73
73
86
82
79
79
96
92
89
89

RPM
350

500

700

950

1360

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
70
69
69
68
78
76
75
74
87
87
85
85
86
82
84
87
89
87
92
94

2
69
68
68
67
74
71
71
71
83
81
80
80
89
85
86
87
92
90
91
93

3
66
64
63
63
72
69
68
67
79
76
75
75
86
83
82
83
95
91
89
91

4
66
64
63
63
72
70
68
67
80
78
76
75
88
85
82
81
97
94
91
92

5
62
60
59
59
68
66
66
65
75
73
72
72
84
80
77
77
93
90
87
87

6
59
60
60
60
67
65
64
64
76
69
68
67
81
76
73
72
90
87
85
84

7
53
55
55
54
56
56
56
56
64
63
62
61
79
70
68
67
89
82
81
80

8
42
43
43
43
46
46
46
46
55
54
53
53
63
61
62
63
78
72
72
71

LWoA
68
66
66
66
74
72
71
70
82
79
77
77
89
85
83
83
99
95
93
93

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-30 Class II
QEI-30II
10

Performance Data

20

1670

1000 lbs.

454 kg.

10

5

CU
RVE
SY
STE
M

927 mm

7½

4
5

3

5

1

Tip Speed (FPM) = Fan RPM x 9.56

DO

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 17.4)

13

90% WOV

47

10

43

91

SE
LE
CT

2

Outlet Velocity (FPM) = CFM / 9.31

13
11

TO

3

Maximum Bhp = (Fan RPM / 533)3

70

36.5 in.

80% WOV
16

Wheel Diameter

10

45

1.1 kW

6

57

11⁄2 hp

15

14

Minimum Motor 	
Starting hp

70% WOV

15

7

Static Pressure (in. wg)

324T

8

15

Static Pressure (Pa x 100)

20

Approximate Weight
(Less Motor & Drives)

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

FT
HIS

Specification Data
Maximum Motor 	
Frame Size

30

25

9

TH
EL
EF
TO

Maximum Fan RPM

1

76

8

T
NO

30

25

20

15

10

5

Volume (cfm x 1000)

Imperial data — Metric data

50

40

30

20

10

0

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

10000

1084

650

1.43

723

2.26

870

4.31

1009

6.76

1141

9.50

11100

1203

706

1.76

771

2.63

905

4.77

1036

7.30

1158

10.1

1274

13.1

12200

1323

763

2.15

824

3.09

942

5.28

1065

7.89

1180

10.8

1291

14.0

1397

17.3

13300

1442

821

2.60

877

3.61

987

5.88

1098

8.56

1209

11.6

1311

14.9

1413

18.3

1510

21.9

14400

1561

880

3.11

931

4.20

1034

6.56

1135

9.31

1237

12.4

1339

15.8

1431

19.4

1527

23.1

1617

27.0

15500

1681

939

3.70

988

4.86

1082

7.31

1176

10.1

1273

13.3

1368

16.7

1460

20.5

1545

24.4

1634

28.4

16600

1800

999

4.37

1045

5.60

1133

8.18

1222

11.1

1310

14.3

1399

17.8

1489

21.6

1573

25.6

1652

29.8

17700

1919

1060

5.11

1103

6.43

1186

9.15

1269

12.1

1349

15.4

1436

19.0

1517

22.8

1602

26.9

18800

2039

1121

5.94

1161

7.34

1240

10.2

1317

13.2

1395

16.6

1473

20.3

1553

24.2

1631

28.3

19900

2158

1182

6.87

1219

8.35

1294

11.4

1367

14.5

1442

18.0

1513

21.7

1590

25.7

1665

29.9

21000

2277

1243

7.90

1278

9.46

1349

12.6

1420

15.9

1489

19.4

1559

23.2

1627

27.2

22100

2396

1304

9.03

1338

10.7

1406

14.0

1473

17.4

1537

20.9

1606

24.9

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
500

700

950

1350

1670

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
83
81
78
76
75
68
69
70
80
76
76
79
84
79
81
84
87
84
91
91

2
72
71
68
68
81
74
72
72
91
90
85
84
88
82
82
85
91
84
86
90

3
68
65
63
63
77
72
71
70
83
79
76
77
95
91
87
87
99
93
92
92

4
66
63
62
62
74
70
67
67
82
78
76
75
92
87
84
83
97
93
90
89

5
68
63
62
62
73
69
68
68
81
77
76
75
89
85
82
82
97
93
90
89

6
61
58
59
59
76
63
63
63
82
71
71
70
87
80
79
79
92
87
85
85

7
50
50
51
51
59
56
57
57
75
66
66
66
88
76
75
75
95
84
82
82

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
44
45
46
54
50
51
52
63
59
61
62
74
69
71
72
84
77
78
79

LWiA
71
67
66
66
80
73
72
71
87
82
80
79
95
90
87
87
102
96
94
93

RPM
500

700

950

1350

1670

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
84
83
80
80
80
77
76
78
86
82
83
84
91
86
90
92
98
92
98
99

2
75
72
70
71
82
77
74
76
93
85
83
85
92
87
89
91
96
91
94
97

3
4
71 72
68 70
66 68
66 68
80 80
76 78
73 75
73 74
88 88
84 85
81 82
81 81
97 97
92 94
90 91
91 90
102 102
100 99
95 96
97 95

5
69
66
66
65
76
73
72
71
84
81
78
78
93
90
87
86
99
97
94
92

6
64
62
62
62
75
68
67
67
83
75
73
73
90
85
82
82
95
91
89
88

7
54
55
55
56
63
62
61
61
76
68
67
67
89
79
77
77
95
86
83
83

8
45
44
44
45
55
54
53
54
64
61
61
63
76
72
72
73
85
79
79
79

LWoA
73
72
70
70
82
79
76
76
90
86
83
83
98
95
92
91
104
101
98
97

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

37

QEI-33 Class I & QEI-L
QEI-33I
Performance Data

6
14

15

5

12

SY
ST
EM
CU
RV
E

5

11

09

TH
IS

6

3

80% WOV

OF

8

4

2

4

1
96 000
9

LE
FT

10

34

Maximum
QEI-L
256T
Motor 	
QEI
286T
Frame Size
Minimum Motor 	
1.1 kW
11⁄2 hp
Starting hp
Wheel Diameter
40.25 in.
1022 mm
Approximate Weight QEI-L 730 lbs. 332 kg.
(Less Motor & Drives) QEI 990 lbs. 449 kg.
Maximum Bhp = (Fan RPM / 450)3
Outlet Velocity (FPM) = CFM / 11.27
Tip Speed (FPM) = Fan RPM x 10.5
% WOV = (CFM x 100) / (Fan RPM x 26.7)
Imperial data — Metric data

70% WOV

10

12

Static Pressure (Pa x 100)

Specification Data

90% WOV

76

9

2

1

0
0

0

LE
CT

TO

2

1

RPM
BHP
% WOV
Density 0.075 lb/ft3
Density 1.2 kg/m3

60% WOV

25

20

TH
E

1000
1234

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

DO

T
NO

56

SE

7

45

0

4

8

12

16

20

24

28

32

Volume (cfm x 1000)
0

10

20

30

40

50

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

8400

745

379

0.52

444

0.93

562

1.93

10200

905

435

0.72

489

1.17

593

2.27

687

3.52

12000

1064

494

0.99

539

1.48

631

2.67

717

4.02

795

5.48

13800

1224

556

1.35

595

1.88

675

3.13

753

4.60

827

6.17

893

7.81

966

9.68

15600

1384

618

1.79

653

2.37

723

3.69

793

5.22

862

6.93

927

8.71

988

10.6

1050

12.6

1113

14.7

17400

1543

682

2.32

714

2.96

776

4.37

840

5.97

902

7.74

963

9.66

1022

11.6

1077

13.7

1129

15.8

19200

1703

747

2.97

775

3.67

832

5.17

888

6.83

947

8.67

1003

10.7

1058

12.8

1112

15.0

1163

17.2

21000

1863

812

3.74

837

4.50

889

6.08

940

7.83

994

9.75

1045

11.8

1098

14.0

1149

16.3

1198

18.7

22800

2023

878

4.64

900

5.46

948

7.16

996

8.99

1042

10.9

1093

13.1

1140

15.3

1189

17.8

24600

2182

944

5.69

965

6.56

1009

8.38

1053

10.3

1097

12.4

1141

14.5

1188

16.9

1231

19.3

26400

2342

1010

6.89

1029

7.83

1070

9.75

1111

11.8

1153

13.9

1192

16.2

28200

2502

1076

8.25

1094

9.25

1132

11.3

1171

13.4

1209

15.6

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
300

450

600

850

1234

38

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
68
66
62
65
74
71
69
69
83
79
78
78
84
82
81
81
88
86
86
86

2
68
66
65
66
76
75
72
72
81
80
79
79
93
92
90
88
98
96
95
95

3
62
60
59
60
71
68
66
66
78
75
73
73
88
85
80
80
95
93
88
88

4
60
60
60
60
70
70
70
70
74
72
70
70
83
80
76
75
94
91
87
87

5
61
60
60
60
70
66
65
65
73
72
71
71
79
78
75
75
90
88
84
84

6
48
49
49
49
59
58
59
58
74
66
66
66
84
74
73
73
88
84
82
82

7
39
40
39
39
50
51
52
52
59
60
60
60
70
67
68
68
90
78
77
77

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
32
34
32
33
45
44
45
44
54
53
54
54
62
61
63
63
75
72
73
73

LWiA
64
62
62
62
73
70
70
70
79
76
75
75
88
84
81
81
97
93
90
90

RPM
300

450

600

850

1234

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
71
68
67
68
80
77
77
78
88
86
85
84
85
84
84
86
91
89
92
94

2
67
68
68
69
76
76
76
76
82
82
82
82
90
90
88
89
95
95
93
94

3
64
63
62
62
73
70
68
69
79
77
75
75
87
84
82
82
97
94
92
92

4
64
63
63
63
72
71
70
70
80
78
75
75
88
85
83
82
99
96
93
93

5
64
63
63
64
71
68
67
68
76
75
73
73
83
80
78
78
94
91
88
88

6
52
52
52
53
62
61
60
60
74
68
67
67
83
76
75
75
91
87
85
85

7
45
45
46
46
54
54
54
54
61
61
61
61
74
70
69
69
91
82
80
80

8
38
38
39
40
46
46
46
46
54
53
53
54
65
62
64
64
78
74
74
75

LWoA
67
66
66
66
74
72
71
72
81
79
78
77
90
86
84
84
100
97
94
94

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-33 Class II
QEI-33II
10

Performance Data
1522

Maximum Bhp = (Fan RPM / 450)

3

YS
TEM
CU
RVE
HIS
S

FT

4
3

5

2

Outlet Velocity (FPM) = CFM / 11.27

5

3

1

Tip Speed (FPM) = Fan RPM x 10.5

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 23.5)

12

TH
EL
EF
TO

544 kg.

22

1200 lbs.

10

15

1022 mm

10

DO

N

14

40.25 in.

Approximate Weight
(Less Motor & Drives)

5

80% WOV

13

Wheel Diameter

1.5 kW

6

97

2 hp

15

70% WOV
15

13

Minimum Motor 	
Starting hp

60% WOV

20

20

11

90% WOV

09

96

9

TO

324T

7

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

50% WOV

8

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

20

LE
CT

Specification Data

40

30

25

76

9

SE

Maximum Fan RPM

9

64

9

OT

24

20

16

12

8

4

36

32

28

Volume (cfm x 1000)

Imperial data — Metric data
0

60

50

40

30

20

10

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

12500

1109

599

1.76

668

2.84

797

5.47

923

8.58

1043

11.9

13900

1233

652

2.17

714

3.32

833

6.06

948

9.29

1059

12.8

1165

16.6

15300

1357

707

2.64

762

3.87

872

6.71

975

10.0

1080

13.8

1181

17.8

1277

21.9

16700

1481

762

3.20

812

4.50

915

7.47

1011

10.9

1107

14.8

1200

18.9

1293

23.3

1381

27.8

18100

1606

818

3.84

862

5.22

958

8.30

1050

11.9

1136

15.8

1227

20.1

1311

24.7

1398

29.4

1480

34.3

19500

1730

874

4.57

916

6.03

1004

9.26

1092

12.9

1174

17.0

1254

21.4

1338

26.1

1415

31.1

1496

36.1

20900

1854

931

5.40

971

6.95

1053

10.3

1134

14.1

1212

18.3

1288

22.8

1365

27.6

1442

32.7

1514

38.0

22300

1978

988

6.34

1026

7.98

1101

11.5

1178

15.4

1253

19.7

1326

24.3

1395

29.2

1469

34.4

23700

2102

1046

7.38

1081

9.12

1151

12.8

1224

16.8

1296

21.2

1365

25.9

1433

31.0

1496

36.2

25100

2227

1103

8.55

1137

10.4

1201

14.2

1272

18.4

1340

22.9

1407

27.7

1471

32.9

26500

2351

1161

9.85

1193

11.8

1254

15.8

1320

20.1

1384

24.7

1450

29.7

1510

34.9

27900

2475

1219

11.3

1249

13.3

1308

17.5

1370

21.9

1432

26.7

1493

31.7

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
450

600

850

1200

1522

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
83
80
78
75
83
79
76
76
79
75
74
79
85
79
81
83
90
85
87
90

2
74
72
70
69
83
80
77
77
93
90
87
88
92
89
86
87
94
89
88
91

3
4
69 67
66 66
63 64
62 64
77 75
73 72
70 70
70 69
84 85
82 82
77 79
78 77
97 94
94 91
91 87
89 86
101 100
97 98
93 94
93 93

5
71
67
66
66
74
73
72
72
81
79
77
76
90
87
85
84
96
94
90
90

6
61
58
57
56
78
65
64
63
87
75
74
72
89
83
81
81
94
90
87
87

7
50
48
48
48
59
56
56
55
73
67
67
65
92
79
77
76
98
87
84
83

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
44
40
40
40
53
49
49
49
65
60
61
61
76
70
70
71
86
79
78
79

LWiA
73
69
69
68
81
76
75
74
90
84
82
81
98
93
90
89
104
99
96
95

RPM
450

600

850

1200

1522

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
87
85
84
83
82
82
82
82
85
82
82
85
89
87
88
91
94
92
94
96

2
77
77
76
77
82
82
81
83
89
87
85
87
92
89
89
92
96
93
95
97

3
4
73 73
71 72
69 70
68 68
79 80
77 79
75 76
74 75
88 90
85 88
82 84
82 83
95 99
93 97
90 94
92 93
102 104
98 102
95 99
98 99

5
74
72
72
72
76
75
75
74
83
81
79
79
93
91
88
87
99
97
94
94

6
64
61
60
59
76
68
67
65
86
77
75
74
90
87
84
83
96
93
90
90

7
54
52
52
52
62
60
59
58
75
70
68
67
92
82
79
78
98
89
86
85

8
47
45
45
45
54
51
52
52
66
61
62
62
78
73
72
73
87
81
79
80

LWoA
76
75
74
74
82
80
78
77
91
88
85
84
100
97
94
93
106
103
100
100

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

39

QEI-36 Class I & QEI-L
QEI-36I
Performance Data

6

920
1116

CU
RV
E
YS
TE
M

5

LE
FT

2

1½

0
0

0

0

DO

T
NO

1

54

9

SE

5

90% WOV

65

TO

1

82

TH
E

3

2

33

OF
TH
IS
S

3

4

80% WOV

10

6

10

16

8

4

LE
CT

10

11

Maximum
QEI-L
256T
Motor 	
QEI
286T
Frame Size
Minimum Motor 	
1.1 kW
11⁄2 hp
Starting hp
Wheel Diameter
44.5 in.
1130 mm
Approximate Weight QEI-L 900 lbs. 409 kg.
(Less Motor & Drives) QEI 1200 lbs. 544 kg.
Maximum Bhp = (Fan RPM / 380)3
Outlet Velocity (FPM) = CFM / 13.79
Tip Speed (FPM) = Fan RPM x 11.7
% WOV = (CFM x 100) / (Fan RPM x 36.1)
Imperial data — Metric data

70% WOV

9
93 20
9

Static Pressure (Pa x 100)

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

15

5

12

30

25

20

14

Static Pressure (in. wg)

QEI-L
QEI

Maximum
Fan RPM

43

6

10

15

20

25

30

35

40

Volume (cfm x 1000)
0

10

20

30

40

50

60

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

10300

746

343

0.63

402

1.14

508

2.36

12500

906

394

0.88

443

1.44

537

2.79

622

4.31

14700

1065

448

1.22

488

1.82

571

3.27

649

4.93

720

6.71

16900

1225

503

1.65

539

2.31

611

3.83

681

5.63

748

7.55

808

9.57

874

11.8

19100

1385

560

2.19

592

2.90

654

4.52

718

6.39

780

8.49

839

10.7

894

12.9

950

15.4

1007

18.0

21300

1544

618

2.85

646

3.63

702

5.35

760

7.31

817

9.48

872

11.8

925

14.3

975

16.7

1022

19.3

23500

1704

677

3.64

702

4.50

753

6.33

803

8.36

857

10.6

908

13.1

958

15.7

1006

18.3

1052

21.0

25700

1863

736

4.59

758

5.51

805

7.45

851

9.59

899

11.9

946

14.4

994

17.1

1040

20.0

1084

22.9

27900

2023

795

5.69

815

6.69

859

8.76

902

11.0

943

13.4

989

16.0

1032

18.8

1076

21.7

30100

2182

854

6.97

873

8.05

913

10.3

953

12.6

993

15.1

1033

17.8

1075

20.7

1114

23.6

32300

2342

914

8.44

932

9.59

969

12.0

1005

14.4

1043

17.0

1079

19.8

34500

2501

974

10.1

991

11.3

1024

13.8

1060

16.4

1094

19.1

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
275

400

550

800

1116

40

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
70
68
64
66
75
72
70
70
85
81
80
80
87
85
84
84
91
89
88
88

2
68
67
65
66
76
74
72
71
82
80
80
80
95
93
91
89
100
98
96
96

3
63
61
60
61
71
69
67
67
79
76
74
74
89
86
82
81
96
94
89
89

4
62
61
61
61
70
70
70
69
75
73
72
72
84
81
77
77
94
91
87
87

5
61
59
60
59
69
65
65
65
75
72
72
72
81
79
77
77
91
88
84
84

6
48
49
49
49
58
57
58
58
73
66
66
66
84
75
74
74
89
84
82
82

7
39
40
39
39
49
50
51
51
60
60
61
61
71
68
69
69
89
78
78
78

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
32
34
32
33
45
43
44
43
54
53
54
55
63
62
64
64
74
72
73
73

LWiA
64
63
63
63
72
70
70
70
79
76
76
75
89
85
82
82
97
93
90
90

RPM
275

400

550

800

1116

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
69
69
69
80
78
77
78
90
88
86
86
88
86
86
88
92
91
93
95

2
68
69
69
69
76
75
75
75
83
82
82
82
91
91
89
90
97
96
94
95

3
65
64
63
63
73
71
69
70
80
78
76
76
89
86
84
84
98
95
93
93

4
65
65
64
64
72
71
70
70
80
79
76
76
90
87
84
83
99
97
93
93

5
64
63
63
64
70
67
67
67
77
75
74
74
85
82
80
80
95
92
89
89

6
53
53
53
53
61
60
60
59
74
68
68
67
84
77
76
76
92
87
85
85

7
45
45
46
47
53
53
53
53
62
61
61
61
75
71
71
71
90
82
80
80

8
38
38
40
40
45
45
46
45
54
53
53
54
66
64
65
65
77
74
74
75

LWoA
67
66
66
66
74
72
71
71
82
80
78
78
91
87
85
85
100
97
94
94

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-36 Class II
QEI-36II
10

Performance Data
1377

Maximum Bhp = (Fan RPM / 381)3

CU
RVE
SY
STE
M

635 kg.

EF
TO
FT
HIS

1400 lbs.

Approximate Weight
(Less Motor & Drives)

10

5

10

4
3

5

5

2

Outlet Velocity (FPM) = CFM / 13.79

1

Tip Speed (FPM) = Fan RPM x 11.7

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 31.7)

10

TH
EL

1130 mm

80% WOV
77

44.5 in.

15

13

Wheel Diameter

6

83

2.2 kW

7

01

3 hp

15

70% WOV

13

Minimum Motor 	
Starting hp

20

Static Pressure (in. wg)

326T

8

11

Static Pressure (Pa x 100)

20

Maximum Motor 	
Frame Size

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

50% WOV
60% WOV

DO

NO

90% WOV

9

82

0

65

1

T

30

25

20

15

10

5

33

93

TO

Specification Data

50

40

30

9

SE
LE
CT

Maximum Fan RPM

45

40

35

Volume (cfm x 1000)

Imperial data — Metric data

60

40

20

0

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

15000

1088

534

2.08

598

3.39

716

6.58

832

10.3

941

14.4

16600

1204

579

2.53

636

3.91

745

7.23

852

11.2

955

15.4

1050

20.0

18200

1320

625

3.05

677

4.52

778

7.96

875

12.0

970

16.5

1064

21.3

1151

26.3

19800

1436

671

3.66

718

5.21

814

8.78

902

13.0

993

17.6

1078

22.6

1165

27.8

1244

33.3

21400

1552

718

4.35

760

5.99

850

9.71

935

14.0

1016

18.8

1099

24.0

1178

29.4

1258

35.1

1332

41.0

23000

1669

766

5.14

805

6.87

888

10.7

968

15.1

1045

20.1

1122

25.4

1198

31.0

1272

37.0

1346

43.0

24600

1785

814

6.02

851

7.86

928

11.9

1005

16.4

1077

21.5

1146

26.9

1221

32.7

1291

38.8

1360

45.2

26200

1901

862

7.02

897

8.96

969

13.8

1041

17.8

1110

22.9

1178

28.5

1244

34.5

1314

40.8

27800

2017

910

8.13

943

10.2

1010

14.6

1078

19.3

1146

24.6

1210

30.3

1272

36.4

1337

42.8

29400

2133

959

9.37

990

11.5

1052

16.1

1118

21.0

1182

26.4

1243

32.2

1305

38.4

1362

44.9

31000

2249

1008

10.7

1038

13.0

1095

17.7

1159

22.9

1219

28.4

1280

34.3

1337

40.6

32600

2365

1057

12.2

1085

14.6

1140

19.5

1200

24.8

1257

30.4

1316

36.5

1371

42.9

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
400

550

800

1100

1377

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
84
81
78
76
85
82
78
79
82
79
78
82
87
82
83
85
92
87
89
92

2
73
71
69
68
84
80
77
78
94
92
89
90
94
91
88
88
95
90
89
91

3
4
69 69
67 66
64 65
63 65
78 76
74 73
71 71
71 71
86 86
84 84
79 80
80 79
98 95
95 92
91 88
90 87
103 101
98 98
94 95
94 94

5
70
66
65
65
76
73
72
72
83
80
78
78
91
88
85
84
97
94
91
90

6
60
57
56
55
77
65
64
63
87
76
75
73
91
84
82
81
94
90
88
87

7
50
47
47
47
60
57
56
55
74
68
68
67
91
79
77
77
100
88
84
84

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
39
39
40
54
49
50
50
66
61
62
62
75
71
71
72
84
79
78
79

LWiA
73
69
68
67
81
76
75
74
91
86
83
82
98
94
91
90
105
100
96
96

RPM
400

550

800

1100

1377

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
87
85
84
84
84
84
83
84
87
84
84
87
91
88
90
93
96
93
96
98

2
76
77
76
76
83
83
82
83
91
89
86
89
94
91
90
93
97
93
96
98

3
73
72
69
68
80
78
76
75
90
87
84
84
97
94
91
93
103
100
97
99

4
74
72
71
70
81
80
77
76
91
89
86
85
99
98
94
94
105
104
100
100

5
73
71
71
70
77
75
75
74
85
83
81
80
94
91
89
88
99
97
94
94

6
62
60
59
58
76
68
67
66
86
78
76
75
92
87
85
84
96
93
91
90

7
53
52
51
51
62
60
59
59
76
71
69
68
92
82
79
78
100
89
86
85

8
47
44
44
45
55
52
52
53
67
62
63
63
77
73
73
73
86
80
79
80

LWoA
76
74
73
73
83
80
79
78
92
89
86
86
100
98
94
94
107
104
100
100

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

41

QEI-40 Class I
QEI-40I
Performance Data

6

5

49 in.

1245 mm

1500 lbs.

680 kg.

6

2

CU
RV
E
5

Maximum Bhp = (Fan RPM / 324)

Outlet Velocity (FPM) = CFM / 16.77

1

2

2

N

Tip Speed (FPM) = Fan RPM x 12.8
0
0

0

% WOV = (CFM x 100) / (Fan RPM x 48.1)

79

9

90% WOV

8

TO

4

3

80% WOV

69

55

EL
EC
T

Approximate Weight
(Less Motor & Drives)

3

TH
E

Wheel Diameter

8

10

8

3.7 kW

4

94

5 hp

10

13

Minimum Motor 	
Starting hp

Static Pressure (in. wg)

324T

70% WOV

15

10

Static Pressure (Pa x 100)

12

Maximum Motor 	
Frame Size

60% WOV

SY
ST
EM

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

40

30

25

FT
HIS

1013

LE
FT
O

Maximum Fan RPM

14

DO

OT

5

4

S

40

8

10

15

20

25

30

35

40

45

50

Volume (cfm x 1000)

Imperial data — Metric data
0

10

20

30

40

50

60

70

80

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

12500

745

312

0.77

365

1.39

462

2.86

15200

906

359

1.08

403

1.75

488

3.39

565

5.23

17900

1067

408

1.49

445

2.22

520

3.98

590

6.00

654

8.16

20600

1228

459

2.03

491

2.82

557

4.68

620

6.86

681

9.20

735

11.7

795

14.4

23300

1389

511

2.70

540

3.56

596

5.53

654

7.81

710

10.4

764

13.0

813

15.7

863

18.7

915

21.9

26000

1550

565

3.51

590

4.47

641

6.56

693

8.94

744

11.6

794

14.4

842

17.4

887

20.4

930

23.5

28700

1711

619

4.50

641

5.54

687

7.77

733

10.2

781

13.0

827

16.0

872

19.1

916

22.4

958

25.7

31400

1872

673

5.67

693

6.81

735

9.17

777

11.8

820

14.6

864

17.7

906

21.0

947

24.4

986

28.0

34100

2033

727

7.05

746

8.27

785

10.8

824

13.5

861

16.4

903

19.7

941

23.0

981

26.6

36800

2194

782

8.64

799

9.96

835

12.7

871

15.5

907

18.6

942

21.8

981

25.3

39500

2355

837

10.5

853

11.9

886

14.8

919

17.7

953

21.0

986

24.3

42200

2516

892

12.6

907

14.1

937

17.1

969

20.3

1000

23.6

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
250

350

500

700

1013

42

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
71
69
65
68
76
73
71
71
86
82
81
81
90
88
86
86
94
91
90
90

2
68
67
66
66
75
73
71
70
82
81
80
80
94
92
89
88
101
99
97
97

3
64
62
61
62
71
69
68
68
79
76
75
74
88
85
81
80
96
94
90
90

4
63
62
62
62
70
69
69
69
76
74
73
73
84
81
77
77
94
92
88
88

5
60
59
59
59
66
63
64
63
76
72
72
72
82
78
76
76
91
88
85
85

6
48
49
48
48
56
56
57
57
72
66
66
66
82
74
73
73
90
84
82
82

7
39
40
39
39
49
49
50
50
60
60
61
61
69
67
68
68
87
78
78
78

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
32
34
32
33
44
42
42
42
54
53
54
55
62
61
63
63
72
72
73
73

LWiA
64
63
63
63
71
69
69
69
80
77
76
76
88
84
82
81
97
94
91
91

RPM
250

350

500

700

1013

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
70
70
70
79
77
77
78
90
88
87
86
89
88
87
88
94
92
94
95

2
69
69
69
69
76
74
74
74
83
82
82
82
91
90
88
89
98
97
95
96

3
66
65
64
64
73
71
69
70
81
79
77
77
89
86
84
84
99
96
94
94

4
66
65
65
65
72
70
69
70
81
79
77
76
89
86
83
83
99
97
93
93

5
63
62
63
63
68
66
65
65
77
75
74
73
85
81
79
79
95
92
89
89

6
52
53
53
53
60
59
59
58
73
68
68
67
82
76
75
75
93
87
85
85

7
45
45
46
46
51
51
52
51
61
61
61
61
73
69
69
70
89
81
80
80

8
38
38
40
40
44
44
44
44
54
53
53
54
65
62
64
64
76
73
74
75

LWoA
67
66
66
67
73
71
70
71
82
80
78
78
90
87
85
84
101
97
94
95

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-40 Class II
QEI-40II
10

Performance Data
1251

YS
TEM
CU
RVE

862 kg.

10

HIS
S

1900 lbs.

5
4

10

3

Maximum Bhp = (Fan RPM / 324)

5

2

Outlet Velocity (FPM) = CFM / 16.77

1

Tip Speed (FPM) = Fan RPM x 12.8

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 42.4)

10

06

DO

5

90% WOV

87

9

TO

5

3

69

SE
LE
CT

Approximate Weight
(Less Motor & Drives)

51

1245 mm

12

49 in.

80% WOV

07

Wheel Diameter

20

6

11

5.5 kW

70% WOV

92

71⁄2 hp

15

7

11

Minimum Motor 	
Starting hp

60% WOV

FT

364T

30

8

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

20

EF
TO

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

50% WOV

TH
EL

Maximum Fan RPM

60

50

40

9

8

55

4

T
NO

15

10

30

25

20

50

45

40

35

55

Volume (cfm x 1000)

Imperial data — Metric data

80

60

40

20

0

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

18000

1077

481

2.48

540

4.06

649

7.91

754

12.4

853

17.3

20000

1197

523

3.03

575

4.70

675

8.71

772

13.5

866

18.6

953

24.1

22000

1317

566

3.68

613

5.45

705

9.61

794

14.5

880

20.0

966

25.7

1045

31.8

24000

1437

609

4.43

652

6.31

739

10.7

819

15.7

902

21.3

979

27.4

1058

33.7

1130

40.4

26000

1556

653

5.30

691

7.29

773

11.8

849

17.0

923

22.8

999

29.1

1071

35.7

1143

42.6

1210

49.8

28000

1676

698

6.29

733

8.40

808

13.1

881

18.4

950

24.4

1021

30.9

1089

37.8

1156

44.9

1223

52.3

30000

1796

743

7.41

776

9.65

846

14.6

915

20.1

981

26.2

1043

32.7

1111

39.8

1174

47.3

1236

55.0

32000

1916

788

8.67

820

11.0

884

16.2

949

21.8

1011

28.1

1073

34.9

1132

42.0

1195

49.7

34000

2035

833

10.1

863

12.6

923

17.9

984

23.7

1046

30.2

1104

37.1

1160

44.5

1217

52.2

36000

2155

879

11.7

907

14.3

963

19.8

1022

25.9

1080

32.5

1135

39.5

1190

47.1

1242

55.0

38000

2275

925

13.4

951

16.2

1003

21.9

1060

28.2

1114

34.9

1169

42.2

1221

49.8

40000

2395

971

15.3

996

18.2

1046

24.2

1099

30.7

1150

37.6

1203

45.0

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
350

500

700

1000

1251

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
82
79
77
75
87
83
80
81
85
82
80
84
89
85
85
87
93
89
90
93

2
73
70
68
67
84
80
77
77
93
90
87
88
96
93
90
89
97
92
91
93

3
4
69 69
67 67
64 66
63 65
78 77
75 74
72 73
72 72
86 85
84 83
80 80
80 79
98 95
95 92
92 89
90 88
104 101
99 99
95 95
95 94

5
68
64
63
63
77
73
72
72
84
80
78
77
92
88
86
85
97
94
91
90

6
58
55
54
54
75
65
64
63
85
75
74
72
92
84
82
81
96
90
88
88

7
49
46
46
46
60
56
56
55
73
67
67
66
90
79
77
77
99
87
84
84

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
42
38
38
38
54
49
50
50
64
60
61
62
74
70
71
72
83
78
78
79

LWiA
72
68
67
66
81
76
75
75
90
85
82
82
99
94
91
90
105
100
97
96

RPM
350

500

700

1000

1251

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
85
83
83
82
85
85
85
85
88
85
85
87
92
89
91
94
97
94
97
99

2
76
75
74
74
84
83
82
82
91
89
86
88
95
92
91
93
99
95
97
99

3
73
72
70
68
81
80
77
76
90
87
84
84
98
96
93
94
104
101
98
100

4
5
74 71
72 68
71 68
70 68
81 78
80 75
78 75
77 74
90 86
88 82
85 80
84 79
99 94
98 92
94 89
94 88
105 100
104 97
100 94
100 94

6
61
58
57
57
75
68
67
66
84
77
75
74
93
88
85
84
97
94
91
90

7
52
50
50
50
62
60
59
59
74
69
68
67
91
81
79
78
99
89
86
85

8
46
42
43
43
54
51
52
53
65
61
62
62
76
73
73
74
85
80
79
80

LWoA
75
73
72
72
83
81
79
78
92
88
85
85
101
98
95
94
107
104
101
100

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

43

QEI-44 Class I
QEI-44I
Performance Data

6

5

907 kg.

6

CU
RV
E

2000 lbs.

3

YS
TE
M

Approximate Weight
(Less Motor & Drives)

8

10

2

5

Outlet Velocity (FPM) = CFM / 20.49

TH

2

2

0
0

0

9

TO

1

Tip Speed (FPM) = Fan RPM x 14.2
% WOV = (CFM x 100) / (Fan RPM x 65.3)

58

46

LE
CT

Maximum Bhp = (Fan RPM / 273)

90% WOV

E

4

3

0

1378 mm

5

54.25 in.

80% WOV
91

Wheel Diameter

4

3

5.5 kW

10

85

71⁄2 hp

70% WOV

74

Minimum Motor 	
Starting hp

20

OF

326T

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

12

RPM
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

60% WOV

TH
IS
S

Specification Data

40

30

FT

915

LE

Maximum Fan RPM

14

T
NO
DO

5

8

SE

10

34

5

15

20

25

30

35

40

45

50

55

60

Volume (cfm x 1000)

Imperial data — Metric data
0

10

20

30

40

50

60

70

80

90

100

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

15200

741

280

0.93

329

1.69

417

3.49

18500

902

322

1.30

362

2.12

440

4.12

510

6.39

21800

1063

367

1.81

400

2.69

468

4.84

532

7.31

590

9.96

25100

1224

413

2.45

442

3.42

501

5.70

559

8.36

613

11.2

663

14.2

717

17.6

28400

1386

459

3.26

485

4.32

537

6.72

589

9.51

640

12.6

689

15.9

733

19.2

779

22.8

826

26.8

31700

1547

507

4.25

531

5.42

577

7.97

624

10.9

670

14.1

715

17.6

759

21.2

800

24.9

838

28.7

35000

1708

556

5.44

577

6.72

619

9.44

660

12.5

704

15.8

745

19.5

786

23.3

826

27.3

864

31.3

38300

1869

605

6.86

623

8.25

661

11.1

700

14.3

739

17.8

777

21.5

816

25.6

853

29.8

889

34.1

41600

2030

654

8.53

670

10.0

706

13.1

741

16.5

775

20.0

813

23.9

847

28.0

884

32.4

44900

2191

703

10.5

719

12.1

751

15.4

784

18.9

816

22.6

849

26.6

883

30.9

48200

2352

753

12.7

767

14.4

797

17.9

827

21.6

858

25.5

888

29.6

51500

2513

802

15.2

816

17.0

843

20.8

872

24.6

901

28.7

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
225

325

450

650

915

44

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
71
70
66
68
77
75
73
73
86
83
82
82
92
91
89
88
96
94
93
93

2
68
67
65
66
76
74
72
71
83
81
80
79
95
93
90
88
101
99
96
96

3
64
63
62
63
72
71
70
70
79
77
75
75
89
86
82
81
97
95
90
90

4
64
63
63
63
72
70
70
70
77
75
74
74
85
82
79
79
95
92
88
88

5
59
58
58
58
67
64
64
64
76
72
72
72
84
79
78
78
92
88
86
86

6
47
48
48
47
56
57
58
57
71
66
66
66
82
74
74
74
91
84
82
82

7
39
40
39
39
50
49
51
50
60
60
60
61
70
68
69
69
86
78
78
78

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
32
34
32
33
45
42
43
42
54
53
54
54
63
62
64
64
71
71
74
74

LWiA
64
63
63
63
72
70
70
70
80
77
76
76
89
85
83
82
98
94
91
91

RPM
225

325

450

650

915

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
71
71
71
80
79
78
79
90
88
87
87
91
90
89
90
95
94
95
96

2
69
69
68
69
77
75
74
75
84
83
82
82
92
91
89
90
99
98
96
97

3
4
67 67
66 66
65 66
65 66
74 74
73 71
71 71
71 71
82 81
80 80
78 77
77 77
91 90
88 87
86 84
85 84
100 100
97 97
95 93
95 93

5
62
62
62
62
69
66
66
66
78
75
74
73
86
82
80
80
95
92
89
89

6
52
52
53
53
60
59
59
59
72
68
68
67
83
77
76
76
93
88
85
85

7
45
45
46
46
52
52
52
52
61
60
61
61
74
70
70
71
88
81
80
80

8
38
38
39
40
45
44
45
45
53
52
53
54
65
63
65
65
75
73
74
75

LWoA
67
67
66
67
74
72
71
72
82
80
79
78
91
88
86
86
101
98
95
95

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-44 Class II
QEI-44II
10

Performance Data

9

10

Maximum Bhp = (Fan RPM / 274)

3

TEM
CU
RVE
HIS
SY
S

1043 kg.

4
10

3

5

2

Outlet Velocity (FPM) = CFM / 20.49

5

1

Tip Speed (FPM) = Fan RPM x 14.2

DO

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 57.5)

80% WOV

FT

2300 lbs.

TH
EL
EF
TO

Approximate Weight
(Less Motor & Drives)

5

85

0

5

3

59

0

46

T
NO

8

15

10

90% WOV

74

TO

1378 mm

20

71

54.25 in.

6

29

Wheel Diameter

15

11

7.5 kW

70% WOV

6

10 hp

30

7

10

Minimum Motor 	
Starting hp

8

Static Pressure (in. wg)

365T

60% WOV

93

Static Pressure (Pa x 100)

20

Maximum Motor 	
Frame Size

40

EC
T

Specification Data

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

75

60

1129

SE
L

Maximum Fan RPM

20

30

25

35

50

45

40

60

55

65

Volume (cfm x 1000)

Imperial data — Metric data
0

100

80

60

40

20

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

22000

1074

434

3.02

487

4.95

585

9.67

681

15.2

770

21.2

24500

1196

472

3.71

519

5.75

609

10.7

698

16.5

782

22.8

861

29.6

27000

1319

512

4.52

554

6.70

637

11.8

717

17.8

795

24.5

873

31.6

944

39.0

29500

1441

552

5.46

590

7.78

668

13.1

741

19.3

815

26.2

885

33.7

956

41.4

1021

49.6

32000

1563

592

6.55

626

9.00

700

14.5

769

20.9

835

28.0

903

35.8

968

44.0

1033

52.4

1094

61.1

34500

1685

633

7.80

665

10.4

732

16.2

798

22.8

860

30.1

923

38.0

985

46.5

1045

55.3

1106

64.4

37000

1807

675

9.21

705

12.0

767

18.0

829

24.8

888

32.3

945

40.4

1005

49.1

1062

58.2

1118

67.7

39500

1929

716

10.8

745

13.7

803

20.0

861

27.0

917

34.7

972

43.0

1025

51.8

1082

61.3

42000

2051

758

12.6

785

15.7

839

22.3

894

29.4

949

37.4

1000

45.8

1051

54.9

1102

64.4

44500

2173

800

14.6

825

17.8

875

24.7

928

32.2

980

40.2

1029

48.9

1079

58.2

1126

67.9

47000

2296

842

16.8

866

20.2

913

27.4

963

35.1

1012

43.3

1061

52.3

1107

61.7

49500

2418

885

19.2

907

22.8

952

30.3

999

38.3

1046

46.7

1093

55.8

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
325

450

650

900

1129

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
82
79
77
75
89
85
82
82
88
85
83
86
91
87
86
88
95
90
91
94

2
74
71
69
68
83
80
77
77
93
91
87
88
98
95
91
90
99
95
92
94

3
4
70 71
68 68
66 67
65 67
79 78
75 75
73 74
72 73
88 86
85 84
81 81
81 80
99 95
96 92
92 89
91 88
104 102
100 99
96 95
96 95

5
69
64
64
63
78
72
72
71
86
81
79
78
92
88
86
85
98
95
92
91

6
58
55
55
54
73
64
64
62
85
75
74
73
94
84
82
82
97
91
88
88

7
49
46
46
46
60
56
56
55
73
68
68
67
88
78
77
77
97
87
84
84

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
43
38
38
39
53
49
50
50
65
61
62
63
72
70
71
72
82
78
78
80

LWiA
73
69
68
67
82
77
75
75
91
86
83
83
99
94
91
91
105
100
97
97

RPM
325

450

650

900

1129

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
85
84
83
83
87
86
86
86
90
87
86
89
93
90
92
94
98
95
98
99

2
77
76
75
75
84
83
81
82
92
90
87
89
96
93
91
93
101
97
98
100

3
75
73
71
70
82
81
78
77
92
89
86
86
100
98
94
95
105
103
99
101

4
5
75 71
74 69
73 68
72 68
81 79
80 75
79 74
77 73
91 87
89 83
86 81
85 80
99 95
97 92
94 89
94 89
105 100
104 98
100 95
100 94

6
61
59
58
58
73
67
66
65
85
78
76
74
94
88
85
84
99
94
91
90

7
53
51
51
51
62
59
59
59
75
70
69
68
89
81
79
79
98
88
86
85

8
46
43
44
44
54
51
52
52
66
61
62
63
75
72
73
74
84
80
79
80

LWoA
76
74
73
73
83
81
79
78
93
89
86
86
101
98
95
95
107
104
101
101

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

45

QEI-49 Class I
QEI-49I
Performance Data

6

1524 mm

2400 lbs.

1089 kg.

6

3

2

7½

Maximum Bhp = (Fan RPM / 231)

Outlet Velocity (FPM) = CFM / 24.85

1

2

3

Tip Speed (FPM) = Fan RPM x 15.7

DO

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 88.4)

80% WOV

67

6
90% WOV

57

0

TO

4

3

SE
LE
CT

Approximate Weight
(Less Motor & Drives)

8

TH
E

60 in.

Static Pressure (in. wg)

Wheel Diameter

15

1

7.5 kW

4

79

10 hp

10

8

Minimum Motor 	
Starting hp

70% WOV

82

Static Pressure (Pa x 100)

364T

25

CU
RVE

5

12

Maximum Motor 	
Frame Size

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

SY
STE
M

Specification Data

50

40

FT
HIS

828

LE
FT
O

Maximum Fan RPM

14

T
NO

45

3

33

4

10

20

30

40

50

60

70

80

Volume (cfm x 1000)

Imperial data — Metric data
0

20

40

60

80

100

120

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5

RPM

BHP

3.5

BHP

RPM

BHP

4

RPM

BHP

RPM

BHP

18000

724

248

1.08

293

2.00

375

4.18

22000

885

285

1.52

323

2.51

394

4.91

459

7.67

26000

1046

325

2.10

356

3.16

418

5.77

477

8.73

532

12.0

30000

1207

366

2.85

393

4.02

448

6.77

500

10.0

551

13.4

597

17.1

647

21.2

34000

1368

407

3.79

432

5.06

479

7.98

527

11.4

574

15.1

618

19.0

659

23.1

703

27.6

38000

1529

450

4.95

472

6.35

514

9.43

558

13.0

601

16.9

641

21.1

682

25.5

719

29.9

755

34.6

42000

1690

494

6.34

513

7.88

552

11.2

590

14.8

629

18.9

668

23.3

705

28.0

742

32.8

776

37.7

46000

1851

538

8.01

554

9.67

590

13.2

625

17.0

661

21.3

696

25.8

732

30.7

766

35.8

799

41.0

50000

2012

582

9.96

597

11.8

630

15.5

662

19.5

694

23.9

728

28.6

759

33.6

793

38.9

824

44.4

54000

2173

626

12.2

640

14.2

670

18.1

700

22.4

730

26.9

760

31.7

792

36.9

820

42.3

58000

2334

670

14.8

683

16.9

711

21.1

739

25.5

767

30.3

794

35.2

823

40.6

62000

2494

714

17.8

727

20.0

752

24.5

779

29.2

805

34.1

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
200

300

425

575

828

46

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
70
67
69
79
77
75
74
88
85
84
84
94
93
91
90
98
96
95
95

2
68
66
65
66
76
74
72
72
84
82
81
81
94
92
88
87
101
99
96
96

3
64
63
63
63
73
73
72
71
81
78
76
76
89
86
81
81
98
96
91
91

4
64
63
63
63
73
71
71
70
79
77
76
76
84
82
79
79
95
93
89
89

5
57
57
57
56
67
65
65
65
78
74
73
73
85
79
78
77
92
89
86
86

6
46
47
47
46
57
57
58
58
71
67
68
68
80
74
74
73
93
84
83
83

7
38
40
38
39
50
50
51
51
61
61
62
62
69
67
68
68
85
78
78
78

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
31
34
31
33
46
43
44
43
55
54
55
56
62
61
63
64
70
71
74
74

LWiA
64
63
63
63
73
71
71
71
82
78
78
78
89
85
82
82
99
94
91
91

RPM
200

300

425

575

828

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
72
72
71
71
81
80
79
80
91
89
89
88
92
92
90
91
97
96
96
97

2
3
4
69 67 67
69 67 67
68 66 67
68 66 67
78 76 75
76 74 72
75 72 72
75 73 72
85 84 82
84 82 81
83 80 79
83 79 79
92 91 89
90 88 86
88 86 84
89 86 83
100 102 100
98 99 97
96 96 94
97 96 94

5
60
60
60
61
69
67
67
67
80
76
75
75
87
82
80
80
96
92
90
90

6
51
52
52
52
61
60
60
60
73
69
69
69
81
76
76
75
94
88
86
85

7
44
44
45
46
53
52
53
53
62
61
62
62
73
69
70
70
87
81
80
81

8
37
37
39
39
45
45
45
45
55
53
54
55
64
62
64
65
74
73
74
75

LWoA
67
67
66
67
75
73
72
73
84
82
80
80
91
87
86
85
102
98
95
95

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-49 Class II
QEI-49II
10

1020

Maximum Bhp = (Fan RPM / 231)

3

TH
IS
S
OF

10

4
3

5

10

2

Outlet Velocity (FPM) = CFM / 24.85

1

Tip Speed (FPM) = Fan RPM x 15.7

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 77.8)

78

9

EF
T

1406 kg.

20

71

TH
EL

3100 lbs.

Approximate Weight
(Less Motor & Drives)

5

3

1524 mm

97

60 in.

80% WOV
20

Wheel Diameter

30

6

10

11 kW

70% WOV

7

DO

N

0

15 hp

15

50% WOV

85

Minimum Motor 	
Starting hp

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

40

90% WOV

7

62

6

TO

405T

8

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

20

LE
CT

Specification Data

100

75

50

49

7

SE

Maximum Fan RPM

9

YS
TEM
CU
RVE

Performance Data

OT

60

50

40

30

20

10

80

70

Volume (cfm x 1000)

Imperial data — Metric data
0

100

80

60

40

20

120

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

27000

1078

393

3.72

441

6.09

530

11.9

616

18.7

697

26.0

30000

1198

427

4.55

470

7.05

551

13.1

631

20.2

707

28.0

778

36.2

33000

1317

462

5.52

501

8.18

576

14.4

648

21.8

719

30.0

789

38.6

853

47.7

36000

1437

498

6.65

533

9.48

604

16.0

669

23.5

736

32.0

800

41.1

864

50.6

923

60.5

39000

1557

534

7.95

565

10.9

631

17.7

694

25.5

754

34.2

816

43.6

874

53.6

933

63.9

988

74.6

42000

1677

570

9.43

599

12.6

660

19.6

719

27.7

776

36.6

834

46.3

890

56.6

944

67.4

999

78.5

45000

1797

607

11.1

634

14.5

691

21.8

748

30.1

801

39.2

852

49.1

907

59.7

959

70.9

1010

82.5

48000

1916

644

13.0

670

16.6

722

24.2

775

32.7

826

42.1

876

52.3

925

63.0

976

74.5

51000

2036

681

15.1

705

18.9

754

26.9

804

35.6

854

45.3

901

55.6

947

66.7

994

78.3

54000

2156

718

17.5

741

21.4

786

29.8

835

38.8

882

48.7

927

59.2

972

70.6

1014

82.4

57000

2276

755

20.1

777

24.2

820

32.9

866

42.3

910

52.3

955

63.2

997

74.7

60000

2396

793

23.0

814

27.3

854

36.4

898

46.1

940

56.4

983

67.5

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
300

425

575

825

1020

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
82
79
77
76
91
87
84
84
91
88
86
88
93
89
88
90
96
91
92
94

2
3
4
75 72 73
72 69 70
69 67 69
68 66 68
85 81 79
81 77 77
78 75 76
78 74 75
92 88 86
89 86 84
86 82 81
87 81 80
100 99 96
97 97 93
93 93 90
92 92 89
102 105 102
97 101 99
94 97 96
95 97 95

5
69
65
64
63
81
74
73
72
88
80
79
77
93
89
87
86
98
95
92
91

6
58
56
55
55
73
65
65
63
83
74
74
72
95
85
83
82
99
91
89
88

7
50
47
47
47
61
57
57
57
72
67
67
66
87
78
77
78
96
86
84
84

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
44
39
39
39
55
50
51
51
64
60
61
62
71
70
71
73
80
77
78
80

LWiA
73
70
69
68
83
78
77
76
91
86
83
82
100
95
92
91
105
101
97
97

RPM
300

425

575

825

1020

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
2
3
4
5
6
85 78 76 77 71 61
84 77 75 75 69 59
83 75 73 75 68 59
83 75 71 74 68 58
89 85 84 83 81 74
88 84 83 82 76 69
88 83 80 80 75 68
88 83 79 79 74 67
91 93 93 90 88 83
89 90 90 88 83 77
87 87 87 85 81 75
90 88 86 84 80 74
95 98 101 99 95 96
92 95 99 98 93 88
93 92 96 95 90 85
96 94 97 94 89 84
99 103 106 105 101 100
99 104 104 98 94
96
98 99 101 100 95 91
100 101 102 100 95 90

7
53
51
51
51
63
60
60
60
74
69
68
68
89
81
79
79
97
88
86
85

8
47
44
44
45
55
52
53
54
64
60
62
63
74
72
73
74
83
79
79
80

LWoA
77
75
74
74
85
82
81
80
93
89
86
86
102
99
96
95
107
104
101
101

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

47

QEI-54 Class I
QEI-54I
Performance Data

6

5

Approximate Weight
(Less Motor & Drives)

2900 lbs.

1315 kg.

6

Maximum Bhp = (Fan RPM / 197)

Outlet Velocity (FPM) = CFM / 30.46

2
5

1

2

Tip Speed (FPM) = Fan RPM x 17.3
0
0

0

% WOV = (CFM x 100) / (Fan RPM x 118)

CU
RV
E

10

4

3

M

SY
ST
E

3

TH
IS

1676 mm

61

OF

66 in.

80% WOV
2

Wheel Diameter

8

20

5

7.5 kW

4

75

10 hp

10

67

Minimum Motor 	
Starting hp

30

3

LE
FT

365T

RPM
70
BHP
% WOV
3
Density 0.075 lb/ft
Density 1.2 kg/m3

60% WOV

70% WOV

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

12

60

DO

T
NO

6

42

5

SE

10

90% WOV

53

TH
E

Specification Data

50

40

TO

752

LE
CT

Maximum Fan RPM

14

33

7

20

30

40

50

60

70

80

90

Volume (cfm x 1000)

Imperial data — Metric data
0

2

4

6

8

10

12

14

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

RPM

BHP

RPM

BHP

RPM

BHP

2

RPM

BHP

2.5
BHP

RPM

BHP

3.5

RPM

BHP

4

RPM

BHP

RPM

BHP

23000

755

234

1.43

272

2.56

343

5.24

27800

912

268

1.99

300

3.21

363

6.20

420

9.54

32600

1070

304

2.73

331

4.05

386

7.25

439

10.9

486

14.8

536

19.4

37400

1227

341

3.68

365

5.13

414

8.50

460

12.5

505

16.7

546

21.2

590

26.2

42200

1385

379

4.87

400

6.44

442

10.0

485

14.1

527

18.8

567

23.6

603

28.5

641

33.9

679

39.7

47000

1543

418

6.32

437

8.05

475

11.8

514

16.2

551

20.9

588

26.1

624

31.5

658

36.9

689

42.6

51800

1700

457

8.06

474

9.94

508

14.0

542

18.4

578

23.4

612

28.8

646

34.5

679

40.4

710

46.4

56600

1858

497

10.1

511

12.2

543

16.4

574

21.1

607

26.3

638

31.8

670

37.8

701

44.0

730

50.4

61400

2015

536

12.5

550

14.7

579

19.3

608

24.2

636

29.5

667

35.3

695

41.3

725

47.8

66200

2173

576

15.3

589

17.7

616

22.6

643

27.7

669

33.2

696

39.1

725

45.4

751

52.0

71000

2330

616

18.5

628

21.1

653

26.2

678

31.6

703

37.4

727

43.4

75800

2488

656

22.2

667

24.9

690

30.4

714

36.0

737

42.0

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
200

275

375

525

752

48

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
2
75 71
73 69
71 68
72 69
80 77
78 74
76 72
76 72
87 84
85 82
84 80
84 80
96 94
95 92
93 88
91 87
100 101
98 99
97 95
97 95

3
67
66
66
66
74
74
73
73
80
78
76
76
89
86
82
81
98
96
92
92

4
67
66
66
66
74
71
71
71
79
77
76
76
85
83
80
80
96
93
89
89

5
60
60
60
59
66
65
65
65
79
73
73
72
87
79
78
78
93
89
87
87

6
49
50
49
49
57
57
58
58
69
66
67
67
79
74
74
74
94
84
83
83

7
41
43
41
42
51
50
51
51
60
60
61
61
69
67
69
69
84
78
79
79

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
34
37
34
36
47
43
44
43
55
53
54
55
62
61
64
64
69
71
74
74

LWiA
67
66
66
66
74
72
71
71
81
78
77
77
90
85
83
83
99
95
92
92

RPM
200

275

375

525

752

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
75
74
74
74
82
81
80
81
90
88
88
88
94
93
91
93
98
98
97
98

2
3
4
72 70 70
71 69 70
71 69 70
71 69 70
78 77 75
76 75 73
75 74 72
75 74 73
85 84 82
83 83 81
82 80 79
82 80 79
93 92 89
91 89 87
88 87 84
89 86 84
101 103 100
99 100 97
97 97 94
98 97 94

5
63
63
63
64
69
67
67
67
80
75
74
74
88
82
81
80
96
93
90
90

6
54
54
55
55
61
60
60
60
70
68
68
68
81
76
76
76
95
88
86
86

7
47
47
48
49
53
52
53
53
61
60
61
61
72
69
70
70
86
81
80
81

8
40
40
42
42
45
45
45
45
53
52
53
54
64
62
64
65
73
73
74
75

LWoA
70
69
69
70
76
73
73
73
84
81
80
79
92
88
86
86
102
98
96
96

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-54 Class II

QEI-54II
10

Performance Data

100

75

929

66 in.

1676 mm

3600 lbs.

1633 kg.

Approximate Weight
(Less Motor & Drives)

10

UR
VE

4

SY
ST E
MC

Wheel Diameter

6

30

20

Maximum Bhp = (Fan RPM / 197)

5

SE
LE
CT
TO

10

3

2

Outlet Velocity (FPM) = CFM / 30.46
DO

0
0

0

% WOV = (CFM x 100) / (Fan RPM x 104)

5
90% WOV

61

1

53

4

4

NO

Imperial data — Metric data
0

40

20

140

120

100

80

60

100

90

80

70

60
50
40
Volume (cfm x 1000)

30

20

10

72

42

T

Tip Speed (FPM) = Fan RPM x 17.3

80% WOV
9

11 kW

70% WOV

0

15 hp

15

50

92

Minimum Motor 	
Starting hp

Static Pressure (in. wg)

405T

8

83

Static Pressure (Pa x 100)

20

Maximum Motor 	
Frame Size

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

FT
HIS

Specification Data

TH
EL
EF
TO

Maximum Fan RPM

125
50% WOV

160

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

RPM

BHP

33500

1105

364

4.71

407

7.61

485

14.7

562

23.0

636

32.0

37000

1221

394

5.71

433

8.78

505

16.1

577

24.8

645

34.3

710

44.4

40500

1336

425

6.88

460

10.1

527

17.7

592

26.7

656

36.6

719

47.2

777

58.3

44000

1452

457

8.22

488

11.7

552

19.6

611

28.8

671

39.0

728

50.1

786

61.7

840

73.7

47500

1567

488

9.76

516

13.4

576

21.6

632

31.1

687

41.6

743

53.1

796

65.2

849

77.7

899

90.7

51000

1683

520

11.5

546

15.4

602

23.9

655

33.6

707

44.4

759

56.2

810

68.7

859

81.8

909

95.2

54500

1798

552

13.5

577

17.6

629

26.5

680

36.5

728

47.5

775

59.5

825

72.3

872

85.9

918

99.9

58000

1914

584

15.7

608

20.0

656

29.3

704

39.5

750

50.8

796

63.2

840

76.2

887

90.1

61500

2029

617

18.1

639

22.7

684

32.3

729

42.9

775

54.5

818

67.1

860

80.4

903

94.5

65000

2145

650

20.9

671

25.6

712

35.7

756

46.6

800

58.5

840

71.2

881

85.0

920

99.3

68500

2260

682

23.9

702

28.9

741

39.3

784

50.7

824

62.8

865

75.9

903

89.7

72000

2376

715

27.2

734

32.4

771

43.3

811

55.0

850

67.4

889

80.8

926

94.9

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
275

375

525

750

929

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
81
79
77
76
90
87
83
84
93
91
88
90
95
91
90
91
97
92
93
95

2
3
4
75 72 75
72 70 71
70 68 70
69 68 70
84 80 79
80 77 77
77 75 76
77 74 76
92 89 87
89 87 85
85 83 82
86 82 81
101 100 96
98 97 94
95 93 90
93 92 89
104 105 102
99 102 100
96 98 96
96 97 95

5
69
65
64
63
81
72
72
70
89
81
79
78
94
89
87
86
99
95
92
92

6
58
55
55
55
70
64
63
62
82
74
74
72
97
85
83
82
101
92
89
89

7
50
47
47
47
60
56
56
56
72
67
67
67
86
78
77
78
95
86
84
85

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
44
38
39
39
54
49
50
50
63
60
61
63
70
70
71
73
79
77
79
80

LWiA
74
71
70
69
83
78
77
76
92
86
84
83
101
95
93
92
106
101
98
97

RPM
275

375

525

750

929

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
2
3
4
5
6
84 78 77 78 71 61
84 77 76 76 68 59
83 75 74 76 68 59
83 75 73 76 67 58
88 85 85 82 81 71
88 84 83 81 75 67
88 82 81 80 74 66
88 81 79 79 73 65
93 93 94 90 89 83
90 90 91 88 83 77
88 87 88 85 81 75
91 88 87 85 80 74
96 99 103 99 96 97
93 96 101 98 93 88
94 94 97 95 90 86
97 96 98 94 90 84
100 104 108 105 101 102
97 101 105 104 98 94
99 99 102 100 96 91
101 102 103 100 95 91

7
54
51
51
51
61
59
59
59
73
69
68
68
87
81
79
79
96
88
86
85

8
47
44
44
45
54
51
52
53
64
60
62
63
73
72
73
74
82
79
79
80

LWoA
78
76
75
75
84
82
80
79
93
89
87
86
103
99
96
96
108
105
101
101

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

49

QEI-60 Class I
8

Performance Data

75

7

60

15 hp

Wheel Diameter

11 kW

73 in.

Approximate Weight
(Less Motor & Drives)

1854 mm

3500 lbs.

1588 kg.

Maximum Bhp = (Fan RPM / 167)

3

10
8
6

25
20

3

15
10

DO

0

% WOV = (CFM x 100) / (Fan RPM x 159)

30

4

1

2

Tip Speed (FPM) = Fan RPM x 19.1

40

5

2

4

Outlet Velocity (FPM) = CFM / 37.23

70% WOV

CU
RV
E

12

50

6

EC
T

Minimum Motor 	
Starting hp

14

LE
FT
OF
TH
IS
SY
ST
EM

405T

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

Static Pressure (Pa x 100)

16

0

0

T
NO

L
SE

40

35

20

20

40

80% WOV
68

60

0

0

90% WOV

0

0

0

40

Imperial data — Metric data
0

50

TH
E

680

Specification Data

RPM
BHP
% WOV
Density 0.075 lb/ft3
Density 1.2 kg/m3

60% WOV

TO

Maximum Fan RPM

18

60

60
Volume (cfm x 1000)
80

100

80

120

140

100

160

120

180

200

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.25

0.5

1

1.5

2

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

2.5
BHP

RPM

BHP

3.5

RPM

BHP

4

RPM

BHP

RPM

BHP

34000

912

242

2.43

271

3.92

328

7.58

380

11.7

40000

1073

276

3.36

300

4.98

349

8.89

397

13.4

439

18.2

484

23.7

46000

1234

310

4.56

331

6.33

374

10.5

417

15.3

458

20.5

494

26.0

534

32.1

52000

1395

345

6.06

364

8.00

402

12.4

440

17.4

477

23.1

514

29.0

547

35.1

580

41.6

615

48.8

58000

1556

381

7.89

398

10.0

432

14.7

465

20.0

500

25.8

533

32.2

566

38.8

596

45.5

625

52.5

64000

1717

417

10.1

432

12.4

463

17.4

493

22.9

525

29.0

556

35.6

586

42.6

616

49.9

644

57.2

70000

1878

454

12.7

467

15.3

495

20.5

523

26.3

551

32.6

580

39.4

609

46.7

636

54.4

663

62.3

76000

2039

490

15.8

502

18.5

529

24.2

555

30.3

579

36.7

606

43.8

632

51.3

659

59.2

82000

2200

527

19.4

538

22.3

562

28.3

586

34.7

610

41.5

634

48.7

659

56.5

88000

2361

564

23.5

575

26.6

597

33.0

619

39.7

642

46.8

663

54.3

94000

2522

601

28.2

611

31.5

631

38.3

652

45.3

673

52.7

100000

2683

638

33.5

647

37.0

666

44.2

Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
300

400

500

600

680

50

3

RPM

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
85
83
82
81
92
91
89
89
99
97
95
94
101
99
98
96
103
101
99
99

2
81
79
77
77
89
86
84
83
96
93
89
88
101
99
96
95
105
104
101
99

3
78
77
76
76
84
82
79
79
90
87
83
83
95
93
88
88
99
97
92
92

4
78
75
75
75
82
80
79
79
87
85
82
82
91
89
86
86
95
92
89
89

5
73
69
69
69
83
76
76
75
89
81
80
80
92
86
84
84
94
90
88
88

6
63
62
63
63
72
70
70
70
79
75
75
75
87
80
80
80
92
85
84
84

7
56
55
56
56
64
63
65
65
70
69
70
70
76
74
75
75
81
78
79
79

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
51
49
49
49
58
57
59
59
63
63
65
65
69
68
70
70
73
72
74
74

LWiA
78
76
75
75
86
82
81
81
92
87
85
85
96
92
89
89
100
96
93
93

RPM
300

400

500

600

680

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
2
3
4
86 82 82 80
85 81 80 78
85 79 78 77
85 79 78 77
92 89 89 86
92 87 87 84
91 85 84 82
91 85 84 82
96 94 94 91
95 92 91 88
93 90 89 86
95 90 88 86
98 99 98 96
98 97 95 93
96 95 93 91
98 96 92 90
100 102 101 100
99 101 98 97
98 99 95 95
100 100 95 94

5
75
71
71
71
84
78
77
77
90
83
82
82
93
88
87
87
96
92
91
90

6
65
64
65
64
75
72
72
72
82
78
77
77
88
83
82
82
93
87
87
86

7
57
57
57
57
66
64
65
65
73
70
71
72
79
76
77
77
84
81
81
81

8
50
49
49
50
58
56
58
59
65
63
65
67
71
69
71
72
76
73
75
76

LWoA
80
78
77
77
88
85
83
83
94
90
88
88
98
94
93
92
102
98
96
96

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

QEI-60 Class II
12

Performance Data
Maximum Fan RPM

50% WOV

150

125

100

840

RPM
BHP
% WOV
3
Density 0.075 lb/ft
3
Density 1.2 kg/m

60% WOV

25

Specification Data

10
75

Wheel Diameter

73 in.

1854 mm

4200 lbs.

1905 kg.

Approximate Weight
(Less Motor & Drives)

Maximum Bhp = (Fan RPM / 167)

3

15

10

60
50

6

40
30
25

4

DO

0

0

% WOV = (CFM x 100) / (Fan RPM x 140)

0

0

80% WOV

75

0

0

2

Tip Speed (FPM) = Fan RPM x 19.1

84

60

20
15

5

Outlet Velocity (FPM) = CFM / 37.23

TH
EL
EF
TO
FT
HIS
SY
ST
EM
CU
RV
E

11 kW

8

70% WOV

90% WOV

TO

15 hp

20

EL
EC
T

Minimum Motor 	
Starting hp

Static Pressure (Pa x 100)

405T

Static Pressure (in. wg)

Maximum Motor 	
Frame Size

T
NO

S

45

0

350

20

40
60
Volume (cfm x 1000)

Imperial data — Metric data
0

50

80

100

100

120

150

200

3

Volume (m /hr x 1000)

Performance Data
STATIC PRESSURE (inches wg)
CFM

OV

0.5

1

2

3

4

5

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

6

RPM

BHP

7

RPM

BHP

8

RPM

BHP

91.5

RPM

BHP

40000

1073

323

5.51

362

9.20

436

17.6

507

27.6

573

38.5

45000

1207

355

6.91

390

10.6

455

19.6

520

30.2

583

41.8

641

54.1

50000

1341

388

8.58

418

12.6

479

21.9

537

32.9

595

45.1

651

58.1

704

71.7

55000

1476

421

10.6

448

14.8

504

24.6

557

35.9

611

48.6

662

62.3

713

76.6

762

60000

1610

454

12.9

479

17.4

531

27.6

580

39.3

628

52.4

678

66.6

724

81.7

772

97.2

817

113.4

65000

1744

488

15.5

511

20.4

559

31.1

605

43.2

651

56.6

694

71.1

740

86.7

783

103.1

827

119.9

70000

1878

522

18.6

543

23.8

588

35.0

631

47.5

674

61.3

715

76.2

757

92.1

799

109.1

839

126.7

75000

2012

556

22.0

576

27.5

617

39.3

658

52.2

699

66.5

738

81.8

776

98.1

815

115.3

80000

2147

591

25.9

610

31.8

647

44.1

687

57.6

724

72.2

762

87.8

799

104.6

834

122.1

85000

2281

625

30.3

643

36.5

678

49.4

715

63.4

751

78.3

787

94.5

822

111.5

90000

2415

660

35.2

677

41.7

710

55.3

745

69.8

779

85.1

813

101.7

95000

2549

695

40.7

711

47.5

742

61.7

774

76.7

808

92.6

840

109.3

Shaded values show where Class I fan selections are more efficient than Class II.
Inlet Sound Power, LWi [dB ref 10-12 watts]
RPM
300

450

600

750

840

% WOV
1
2
100
86 80
80
83 77
60
81 74
50
80 73
100
95 90
80
93 87
60
90 83
50
91 84
100
96 98
80
94 95
60
91 91
50
92 91
100
98 103
80
95 101
60
93 97
50
94 97
100
100 105
80
96 102
60
95 99
50
97 100

3
4
5
6
77 78 76 64
75 75 69 60
73 75 68 59
72 74 67 59
88 86 89 79
86 84 79 72
82 82 78 72
81 81 77 70
96 93 93 91
94 91 86 81
90 88 84 79
89 87 83 78
103 99 97 99
100 96 92 88
96 93 90 86
95 92 89 85
106 102 100 101
103 100 95 91
99 96 93 89
98 95 92 89

7
56
52
52
52
70
65
65
65
80
73
73
74
89
81
80
81
94
85
84
84

Outlet Sound Power, LWo [dB ref 10-12 watts]
8
49
44
45
45
61
58
59
61
66
66
67
69
73
72
74
76
78
76
78
79

LWiA
79
75
74
74
91
85
83
82
98
92
90
89
104
98
95
95
107
101
99
98

RPM
300

450

600

750

840

% WOV
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50
100
80
60
50

1
87
86
86
86
93
91
90
92
96
93
93
95
99
96
97
99
101
98
99
102

2
82
81
79
78
92
89
87
87
98
95
93
94
102
99
98
100
104
101
101
104

3
82
81
78
77
93
91
88
87
100
98
95
95
105
104
100
100
107
105
102
103

4
5
6
81 77 66
80 72 64
80 71 63
79 70 62
89 89 80
87 82 75
85 80 73
84 79 72
96 94 92
94 89 84
91 87 81
91 86 80
103 99 99
101 96 91
98 93 88
97 92 87
106 102 102
104 99 95
101 96 92
101 96 91

7
58
55
56
56
71
66
66
67
81
76
75
75
90
83
82
82
95
88
86
86

8
51
48
49
49
62
58
60
61
69
67
69
70
76
75
76
77
81
79
79
81

LWoA
82
80
79
78
92
88
86
85
99
96
93
92
105
102
99
99
108
105
102
102

Performance certified is for installation type B: Free inlet, Ducted outlet. Power rating (Bhp) does not include transmission losses. Performance ratings do not
include the effects of appurtenances (accessories).
The sound power level ratings shown are in decibels, referred to 10-12 watts, calculated per AMCA Standard 301. Values shown are for inlet LWi , LWi A and outlet LWo ,
LWo A sound power levels for installation type B: Free inlet, Ducted outlet. Ratings for inlet sound do not include the effects of duct end correction. Ratings for outlet
sound include the effects of duct end correction. The A-weighted sound power ratings shown have been calculated per AMCA Standard 301. The AMCA Certified
Ratings Seal applies to LWi A and LWo A values only.

51

Specifications
Model QEI-L, QEI-I/II and QEID
Supply, exhaust, or return air fans shall be
of the inline mixed flow type.
The housing shall be constructed of welded
heavy-gauge steel to assure no air leakage.
Housing shall have inlet and outlet collars
for slip-fit duct connections. The housing
and bearing and/or motor supports shall be
constructed of heavy-gauge steel members
to prevent vibration and rigidly support the
shaft and bearings. Welded steel vanes
shall straighten the flow of air from the fan
discharge.
All QEI-L and QEI-I/II units up through size
27 shall incorporate a universal mounting
system that allows the fan to be mounted in
either vertical or horizontal configurations
and field rotation of the motor position in 	
90 degree increments. Bearing life shall not
be reduced below specified level in different
configurations. QEI-I/II units size 30 and
larger shall allow for field rotation of motor
positions. Units shall accommodate base
mount or ceiling hung mounting without
structural modifications to the fan.
The wheel shall be of the mixed flow type.
Wheels shall have a wheel cone, spherical
back plate and single thickness cambered
blades. Wheels shall be statically and
dynamically balanced to balance grade
G6.3 per ANSI S2.19. The wheel cone and
fan inlet cone shall be carefully matched
and shall have precise running tolerances
for maximum performance and operating
efficiency.
Each assembled fan shall be test run at
the factory at the specified fan RPM. The

maximum allowable fan vibration shall be
0.15 in/sec. peak velocity, filter-in for 	
QEI-I/II with signatures taken on each
bearing in three planes; horizontal, vertical,
and axial. Maximum vibration of 0.08 in/sec.
peak velocity, filter-in for QEID in a single
plane on the fan housing. This report shall
be provided at no charge to the customer
upon request.
Inlet and outlet sound power levels shall be
provided for each of the eight octave bands
at the point of operation.
Fans shall be licensed to bear the AMCA
Seal for Sound and Air Performance.
Mixed flow fans shall be Model QEI-L, 	
QEI-I/II or QEID as manufactured by
Greenheck Fan Corporation, Schofield,
Wisconsin, USA and shall be supplied as
shown on the plans and in the fan schedule.

Additional Belt Drive Specification
Turned, precision ground and polished steel
shafts shall be sized so the first critical
speed is at least 25% over the maximum
operating speed. Close tolerances shall be
maintained where the shaft makes contact
with the bearings.
Bearings shall be heavy-duty, grease
lubricated, self-aligning ball or roller type
with extended lubrication lines. 	
QEI-I/II and QEI-L (horizontal mount)
bearings shall be selected for a minimum
life L10 of 80,000 (L50 of 400,000) hours at
maximum operating speed. QEI-L (vertical
mount) bearings shall be selected for a
minimum life, L10 of 50,000 (L50 of 250,000)
hours at maximum operating speed.

Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.

P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com

Prepared to Support
Green Building Efforts

00.CVI.1018 R7 5-2012 IP
Copyright © 2012 Greenheck Fan Corp.



---

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