Greenheck Fan Nail Gun QEI User Manual
Mixed Flow Fans  
Belt and Direct Drive  
Models QEI-L, QEI, QEID  
May  
2012  
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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  
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.  
L
per ABMA standards, in excess of 80,000 hours  
10  
50  
(L 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 L in excess of 50,000 hours  
10  
(L at 250,000 hours) in vertical position.  
50  
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 zinc-  
rich 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  
Motor Horsepower  
D = Direct Drive  
4 = ¼  
3 =  
30 = 3  
50 = 5  
300 = 30  
400 = 40  
500 = 50  
600 = 60  
750 = 75  
1000 = 100  
1250 = 125  
3
Fan Size  
5 = ½  
7 = ¾  
10 = 1  
15 = 1½  
20 = 2  
75 = 7½  
100 = 10  
150 = 15  
200 = 20  
250 = 25  
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  
RPM  
Construction  
L = Low Pressure  
I = Class I  
II = Class II  
Low Pressure available in sizes 12 through 36  
A = 1770 C = 870 J = 1425 M = 3600  
B = 1170 F = 690 K = 950 R = 2900  
Percent Wheel Width  
50 through 100  
* Blue text is specific to direct drive model QEID only  
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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:  
•
•
•
Bearing lubrication is performed through extended grease fittings located on the  
outside of the fan housing.  
The 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:  
•
Extended lubrication lines are provided for motor bearing requiring lubrication.  
Smaller frame motors use sealed bearings and are permanently lubricated.  
4
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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.  
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  
QEID)  
USA Patent No. 7048499  
China (P.R.) Patent No. CN1294361C  
Mexico Patent No. 243465  
®
®
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.  
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Design & Performance  
Mixed Flow: Axial/Centrifugal Hybrid  
Centrifugal  
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.  
Mixed Flow Fans: Slight  
airflow deflection from  
straight through.  
Axial  
Centrifugal  
Mixed Flow  
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 (L A) and the static  
w
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.  
Sound Power (L A)  
w
Static Efficiency  
Mixed Flow  
Fan Size  
Performance  
Inline  
Inline  
Centrifugal  
Mixed Flow  
Mixed Flow  
Vane Axial  
Vane Axial  
(QEI-L, QEI-I/II)  
(QEI-L, QEI-I/II)  
Centrifugal  
15,000 cfm  
@ 1.0 in. wg  
24  
36  
49  
90 dB  
86 dB  
92 dB  
100 dB  
93 dB  
98 dB  
103 dB  
102 dB  
111 dB  
43%  
68%  
71%  
17%  
45%  
60%  
34%  
56%  
59%  
25,000 cfm  
@ 2.0 in. wg  
50,000 cfm  
@ 4.0 in. wg  
Model comparisons based on similar outer tube diameters.  
Lower Sound Power, Better Sound Quality  
Sound power levels shown at each frequency:  
Typical  
Typical  
QEI-L  
Tubular Centrifugal  
Vane Axial  
QEI-I/II  
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  
outer tube diameters at an operating point of 20,000 cfm with  
1.5 inches wg of static pressure (Ps). Tubular centrifugals  
(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.  
100  
90  
80  
70  
60  
62  
125  
250  
500  
1000 2000 4000 8000  
Frequency, Hz  
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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.  
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.  
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  
final design CFM and static pressure.  
100%  
Wheel  
Width  
Intermediate  
Wheel  
Widths  
50%  
Wheel  
Width  
50% 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 (LWiA) and outlet sound  
power (LWoA). 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 (L A) into sound pressure (dBA), the following corrections  
w
are applied for a hemispherical free field.  
Distance from Fan  
Correction  
3 ft. (0.9 m)  
7 db  
5 ft. (1.5 m)  
11.5 db  
10 ft. (3.0 m)  
17.5 db  
dBA = L A - correction  
w
Note: Refer to AMCA Publication 303, Application of Sound Power Level Ratings for additional information on calculating typical sound pressure levels for fan installation.  
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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 t
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  
Center Frequencies [Hz] 63 125 250 500 1000 2000 4000 8000  
Attenuation Value (dB) 13 20 25 31 34 35 36 36  
reductions from total sound power  
levels for each octave band with  
the sound vault housing.  
8
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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  
Standard  
Surface Preparation  
2-3 mils  
• An automatic powder coat application  
that produces uniform coverage and  
unmatched paint quality.  
Base Steel  
• A double coat thickness that provides  
superior durability and protection from  
air and water.  
Two-coat Process  
Zinc-rich Primer  
(70% zinc)  
Topcoat  
• A zinc-rich basecoat that includes  
an epoxy component that provides  
additional corrosion protection.  
Advanced  
Surface Preparation  
4-6 mils Total  
Base Steel  
• A zinc-rich basecoat that provides  
chemical protection of exposed steel  
to prevent corrosion.  
Salt Spray ASTM B117  
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.  
Hours  
1000  
2000  
3000  
4000  
Permatector™  
Hi-Pro Poly  
Perma-Z  
Hi-Pro-Z  
Baked Phenolic  
Epoxy Phenolic  
Fluorocarbon  
Coating fans with Perma-Z or Hi-Pro-Z has reduced our  
customers annual paint maintenance costs by three to  
four times!  
Salt Spray ASTM B117 is a comparative test  
that indicates the corrosion resistance of  
powder paint coatings.  
For more information, see Greenheck’s Coatings for  
Extreme Applications catalog, available online at  
www.greenheck.com  
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Certifications & Listings  
Seismic Certification  
The International Building Code (IBC) has been adopted at the state and lo
level throughout the United States. With the adoption of this code, comes
introduction of standards intended to improve the performance and design
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  
• Shake table tested at an independent test facility in accordance with  
ICC-ES AC 156  
Structural Finite Element Analysis  
Seismic Design Category F  
• All equipment certified to worst case scenario seismic conditions  
- Importance factor of 1.5 (IP = 1.5)  
- Site Classes (A - F)  
- Occupancy Categories (I - IV)  
- Seismic Design Categories (A - F)  
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.  
Operating  
Temperature Duration  
Time  
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.  
Model  
ºC  
ºF  
Hours  
Comments  
QEID  
QEI-I/II  
QEI-I/II  
QEID  
300  
300  
260  
260  
572  
572  
500  
500  
1
2
4
5
Per British Spec 7346  
UL/cUL File MH17511  
UL/cUL Power Ventilators for Smoke Control Systems  
Per Industrial Risk  
Insurers (North America)  
Consult your Greenheck representative for time and temperature  
combinations other than those listed.  
UL 762 is concerned with fans designed  
for removal of smoke and grease laden  
vapors with airstream temperatures up  
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.  
to 400°F.  
Listed Power  
Ventilation for  
Restaurant  
Exhaust  
Appliances  
13G3 Maximum  
Operating  
• Meets all UL 705 requirements  
• UL/cUL File MH11745  
UL/cUL Power Ventilators for  
Restaurant Exhaust Appliances  
• Bolted access door  
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.  
• Drain connection  
Temperature  
400°F.  
• Meets requirements of NFPA 96  
Ventilation Control and Fire Protection  
of Commercial Cooking Operations  
10  
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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  
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Belt Drive Mounting  
Configurations  
QEI-I/II Sizes 9-27 and all QEI-L  
Universal Mounting  
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.  
Optional  
Mounting  
Rails  
Fig. 1  
Fig. 2  
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 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.  
Optional  
Mounting  
Rails  
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. 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. 3  
Fig. 4  
Vertical Ceiling Hung  
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.  
Optional  
Mounting Rails  
Vertical Base Mount  
Fig. 5  
A
H
B
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.  
G
C
Horizontal Mounting  
Horizontal - Base Mount  
A
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  
G
C
Ceiling Hung: Suspend the fan horizontally from the ceiling.  
Motor Positions: A, C, D, E, F and G  
F
D
Mounting rails are recommended for horizontal installations with B, C, D, F, G and H  
motor positions.  
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  
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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 heavy-  
gauge 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.  
The fan wheel is constructed of a  
nonferrous material (aluminum).  
QEI-I/II  
Spark B A non-ferrous (aluminum) bearing  
cover surrounds the driven bearing,  
shielding it from the airstream.  
The inlet cone is constructed of  
non-ferrous material (aluminum).  
Spark C A nonferrous (aluminum) bearing  
cover surrounds the driven bearing  
shielding it from the airstream.  
QEI-I/II  
QEI-L  
13  
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Accessories  
Availability  
QEI-L QEI-I QEI-II QEID  
Motor Cover  
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 Door Hinged access doors provide an opening through the fan  
housing for cleaning or visual inspection of the wheel. Bolted  
access door is standard.  
Extended Life  
Bearings  
Air handling quality, flange mounted bearings meet a basic  
rating fatigue life L per ABMA standards, in excess of  
10  
200,000 hours (L at 1,000,000) at maximum operating  
50  
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.  
Std.  
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  
• NEMA-3R  
• NEMA-4  
General purpose  
Rainproof  
Watertight  
• NEMA-7 & 9* Class 1 and 2 hazardous locations  
*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  
Belt Tube  
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.  
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™ Flow  
Measurement  
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.  
14  
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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  
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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  
10  
1770 RPM  
8
(60 Hz)  
Static  
Pressure  
(in. wg)  
6
Model QEID  
12—33  
4
2
12  
15  
16 18 20 22 24 27 30 33  
0
1
5
10  
50  
100  
Volume (cfm x 1000)  
12  
10  
8
1170 RPM  
(60 Hz)  
Static  
Pressure  
(in. wg)  
6
Model QEID  
15—49  
4
2
15  
16 18 20 22 24 27 30 33 36 40 44 49  
0
1
5
10  
50  
100  
Volume (cfm x 1000)  
16  
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QEID Dimensional Data  
8
6
870 RPM  
(60 Hz)  
Static  
Pressure  
4
(in. wg)  
Model QEID  
36—54  
2
36  
40  
44  
50  
49  
54  
0
10  
20  
30  
40  
100  
Volume (cfm x 1000)  
Slip Fit O.D.  
Length*  
Weight**  
Size  
12  
inches  
mm  
435  
inches  
25.0  
25.0  
26.0  
29.0  
34.0  
35.5  
41.5  
45.0  
mm  
635  
635  
660  
737  
864  
902  
1054  
1143  
lbs.  
100  
140  
kg.  
45  
17.13  
20.88  
23.00  
25.38  
27.81  
30.88  
34.00  
37.44  
41.63  
45.75  
50.56  
55.75  
61.63  
67.75  
75.00  
15  
16  
18  
20  
22  
24  
27  
30  
33  
36  
40  
44  
49  
54  
530  
65  
Slip Fit  
O.D.  
584  
170  
80  
645  
200  
95  
706  
250  
115  
170  
220  
260  
390  
520  
620  
750  
995  
784  
370  
864  
480  
951  
570  
1057  
1162  
1284  
1416  
1565  
1721  
1905  
860  
Length  
1140  
1360  
1650  
2190  
2700  
3130  
Refer to  
table below.  
*Length varies with motor frame size.  
Refer to Length table shown.  
**Weight is for unit only and does not  
include motor.  
1225  
1420  
Length — inches (millimeters)  
254/6 T  
284/6 T  
324/6 T  
364/5 T  
404/5 T  
444/5 T  
Size  
30  
33  
36  
40  
44  
49  
54  
45.5 (1156)  
46.5 (1181)  
50.5 (1283)  
50.0 (1156)  
54.0 (1372)  
58.0 (1473)  
56.5 (1435)  
50.0 (1156)  
54.0 (1372)  
58.0 (1372)  
61.0 (1549)  
64.0 (1626)  
54.0 (1372)  
58.0 (1372)  
61.0 (1549)  
64.0 (1626)  
74.5 (1892)  
77.0 (1956)  
70.0 (1778)  
74.5 (1892)  
77.0 (1956)  
80.5 (2045)  
83.0 (2108)  
17  
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QEI Dimensional Data  
QEI-L  
QEI  
Airflow  
Airflow  
Slip Fit  
O.D.  
Height  
Height  
Length  
Length  
QEI-L  
QEI Class I  
QEI Class II  
Slip-Fit O.D.  
Length  
Height  
Slip-Fit O.D.  
Length  
Height  
Length  
Height  
Size  
inches (mm)  
inches (mm)  
inches (mm)  
inches (mm)  
inches (mm)  
NA  
NA  
NA  
17.13 (435)  
17.13 (435)  
20.88 (530)  
23.00 (584)  
25.38 (645)  
27.81 (706)  
30.88 (784)  
34.00 (864)  
37.44 (951)  
NA  
NA  
28.5 (724)  
30.5 (775)  
36.5 (927)  
36.5 (927)  
9
17.5 (445)  
21.13 (537)  
23.31 (592)  
25.63 (651)  
28.06 (713)  
31.13 (791)  
34.25 (870)  
37.69 (957)  
42.00 (1067)  
46.13 (1172)  
51.06 (1297)  
NA  
26.5 (673)  
29.0 (737)  
31.0 (787)  
33.0 (838)  
35.5 (902)  
39.0 (991)  
37.5 (953)  
41.5 (1054)  
44.0 (1118)  
46.5 (1181)  
50.5 (1283)  
53.5 (1359)  
28.5 (724)  
36.5 (927)  
12  
15  
16  
18  
20  
22  
24  
27  
30  
33  
36  
40  
44  
49  
54  
60  
31.0 (787) 41.0 (1041) 34.0 (864) 41.0 (1041)  
33.0 (838) 44.0 (1118) 34.0 (864) 44.0 (1118)  
35.0 (889) 46.5 (1181) 39.5 (1003) 47.5 (1207)  
37.5 (953) 50.5 (1283) 41.5 (1054) 50.5 (1283)  
41.0 (1041) 53.5 (1359) 44.0 (1118) 53.5 (1359)  
44.5 (1130) 57.5 (1461) 49.0 (1245) 59.5 (1511)  
47.0 (1194) 61.0 (1549) 53.0 (1346) 63.0 (1600)  
42.5 (1080) 55.5 (1410)  
45.0 (1143) 61.0 (1549)  
52.0 (1321) 64.5 (1638)  
56.5 (1435) 68.0 (1727)  
62.0 (1575) 75.0 (1905)  
41.62 (1057) 54.0 (1372) 65.0 (1651) 60.5 (1537) 72.0 (1829)  
45.75 (1162) 58.5 (1486) 69.0 (1753) 65.0 (1651) 76.5 (1943)  
50.56 (1284) 64.0 (1626) 75.0 (1905) 69.0 (1753) 82.5 (2096)  
55.75 (1416) 68.5 (1740) 83.0 (2108) 75.5 (1918) 90.5 (2299)  
61.62 (1565) 74.0 (1880) 89.5 (2273) 80.5 (2045) 97.0 (2464)  
67.75 (1721) 80.5 (2045) 96.5 (2451) 86.5 (2197) 104.0 (2642)  
75.00 (1905) 87.0 (2210) 105.0 (2667) 93.5 (2375) 111.0 (2819)  
82.88 (2105) 91.5 (2324) 113.0 (2870) 102.5 (2604) 119.0 (3023)  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
NA  
18  
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QEI-9 Class II  
10  
8
5
50% W  
RPM  
BHP  
OV  
Performance Data  
Maximum Fan RPM  
Specification Data  
3
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
60% W  
OV  
4000  
184T  
20  
15  
10  
5
70% W  
OV  
Maximum Motor  
Frame Size  
2
4
0
6
0
0
1½  
Minimum Motor  
Starting hp  
80% W  
OV  
1/3 hp  
.25 kW  
3
4
0
1
Wheel Diameter  
15 in.  
381 mm  
77 kg.  
0
4
¾
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 2671)3  
Outlet Velocity (FPM) = CFM / 1.56  
Tip Speed (FPM) = Fan RPM x 3.93  
170 lbs.  
2
8
0
0
½
90% W  
OV  
3
2
2
2
0
0
1
6
0
0
0
0
% WOV = (CFM x 100) / (Fan RPM x 0.73)  
0
0
5
10  
15  
20  
25  
30  
Volume (cfm x 100)  
Imperial data — Metric data  
1
2
3
4
5
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
RPM RPM  
CFM  
OV  
0.25  
RPM BHP  
0.5  
RPM  
1
2
3
3.5  
4
BHP  
RPM  
BHP  
BHP  
RPM  
BHP  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
850  
541 1325 0.09 1463 0.14 1709 0.25 1937 0.38 2148 0.52 2341 0.67  
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]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1600  
% 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
7
8
LWi  
A
RPM  
1600  
% 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
7
8
LWoA  
69 71 74 70 71 67 65 57  
71 69 72 68 68 66 62 56  
70 70 71 66 63 65 61 55  
72 70 71 65 63 65 61 55  
74 75 78 75 75 74 71 65  
72 71 73 72 72 71 66 60  
73 72 74 70 69 70 66 60  
75 73 74 70 69 70 66 61  
77 78 82 78 80 79 75 74  
77 78 77 74 75 75 71 66  
78 79 78 74 74 74 70 65  
78 79 79 75 74 74 70 65  
78 80 84 80 83 83 79 79  
78 81 81 77 79 79 75 71  
80 82 81 77 78 78 74 70  
80 82 82 79 78 78 74 70  
78 82 85 82 87 87 83 83  
79 83 84 81 83 83 79 76  
82 85 84 80 82 81 78 76  
82 84 85 83 82 82 78 75  
75  
73  
71  
71  
80  
77  
76  
76  
85  
81  
80  
80  
89  
84  
84  
84  
92  
88  
87  
88  
76 78 78 70 71 65 63 56  
77 80 77 67 68 63 58 56  
80 78 76 66 66 62 58 56  
82 78 77 66 66 62 58 56  
86 86 84 77 78 74 69 64  
86 85 84 73 74 70 65 61  
87 85 82 73 73 69 65 61  
88 86 82 74 73 69 65 61  
88 85 87 81 83 80 75 72  
87 88 85 77 79 76 71 66  
91 85 86 78 78 75 70 67  
92 86 86 79 79 75 70 67  
88 88 91 84 87 85 80 78  
90 88 89 80 83 81 76 71  
94 87 89 82 83 80 76 72  
94 88 89 83 84 81 76 72  
88 93 96 87 91 90 85 83  
76  
74  
73  
73  
82  
80  
79  
79  
87  
84  
84  
84  
92  
88  
88  
89  
96  
92  
92  
92  
2200  
2800  
3400  
4000  
2200  
2800  
3400  
4000  
94  
86 92 82 87 86 81 75  
95 89 92 85 86 85 81 76  
95 90 92 86 88 85 81 77  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
19  
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QEI-12 Class I & QEI-L  
10  
8
Performance Data  
7½  
50% W  
RPM  
BHP  
OV  
60% W  
5
% WOV  
QEI-L  
QEI  
3800  
3800  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum  
Fan RPM  
OV  
20  
15  
10  
5
70% W  
OV  
Specification Data  
3
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
184T  
184T  
80% W  
OV  
6
3800  
2
Minimum Motor  
Starting hp  
Wheel Diameter  
1½  
1/3 hp  
15 in.  
QEI-L 120 lbs. 55 kg.  
QEI 160 lbs. 73 kg.  
.25 kW  
3200  
4
381 mm  
1
90% W  
OV  
¾
Approximate Weight  
(Less Motor & Drives)  
2600  
½
2
3
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  
1400  
0
0
0
0
1
2
3
4
5
6
Volume (cfm x 1000)  
2
4
6
8
10  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.09  
0.13  
0.19  
0.27  
0.38  
0.51  
0.68  
0.88  
1.11  
1.39  
1.71  
2.08  
RPM  
1241  
1399  
1575  
1763  
1966  
2172  
2382  
2593  
2806  
3021  
3237  
3453  
BHP  
0.15  
0.20  
0.27  
0.36  
0.48  
0.62  
0.79  
1.00  
1.25  
1.54  
1.87  
2.25  
RPM  
1549  
1661  
1807  
1967  
2139  
2323  
2514  
2716  
2922  
3129  
3338  
3549  
BHP  
0.30  
0.37  
0.46  
0.56  
0.69  
0.85  
1.04  
1.26  
1.53  
1.84  
2.19  
2.59  
RPM  
1823  
1907  
2020  
2162  
2317  
2479  
2657  
2840  
3029  
3231  
3435  
3641  
BHP  
0.49  
0.57  
0.67  
0.80  
0.94  
1.11  
1.31  
1.55  
1.82  
2.15  
2.53  
2.95  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
1200  
1500  
1800  
2100  
2400  
2700  
3000  
3300  
3600  
3900  
4200  
4500  
764  
1070  
1257  
1461  
1669  
1881  
2095  
2310  
2527  
2745  
2964  
3184  
3404  
955  
2137  
2228  
2341  
2484  
2636  
2799  
2969  
3150  
3335  
3527  
3729  
0.79  
0.91  
1.04  
1.21  
1.40  
1.62  
1.86  
2.16  
2.49  
2.87  
3.31  
2341  
2423  
2523  
2640  
2785  
2938  
3100  
3265  
3446  
3630  
1.03  
1.16  
1.31  
1.49  
1.71  
1.94  
2.21  
2.50  
2.86  
3.25  
1146  
1337  
1528  
1719  
1910  
2101  
2292  
2484  
2675  
2866  
2607  
2690  
2801  
2926  
3072  
3226  
3387  
3551  
3731  
1.43  
1.60  
1.79  
2.02  
2.28  
2.57  
2.88  
3.23  
3.65  
2776  
2858  
2954  
3067  
3201  
3348  
3503  
3665  
1.72  
1.90  
2.11  
2.35  
2.63  
2.94  
3.28  
3.65  
3016  
3099  
3208  
3322  
3467  
3615  
3772  
2.22  
2.44  
2.70  
2.98  
3.32  
3.68  
4.08  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1
2
3
4
5
6
7
8
LWi  
75  
A
RPM  
1400  
% WOV  
1
2
3
4
5
6
7
8
LWo  
78  
A
100  
80  
77 78 71 73 67 68 61 52  
77 78 69 68 65 64 60 52  
78 78 68 65 62 61 60 52  
78 77 68 64 62 60 60 52  
78 78 78 79 75 75 73 59  
74 77 76 75 71 72 66 58  
74 76 75 71 68 68 64 58  
76 77 75 70 67 67 63 58  
83 82 80 80 78 77 83 68  
80 82 81 78 75 76 74 65  
79 81 79 76 73 74 70 65  
81 81 79 75 72 73 69 65  
85 85 82 82 81 80 87 79  
82 85 83 81 79 78 79 70  
83 85 82 81 77 77 74 70  
83 84 82 81 77 77 74 70  
86 87 85 86 86 84 88 91  
80 87 83 83 82 80 80 74  
85 88 85 85 80 79 77 74  
84 87 84 86 81 80 78 74  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
87 83 75 74 72 71 63 59  
87 81 74 71 70 68 62 58  
88 82 74 70 68 67 62 59  
89 81 73 70 67 66 62 59  
84 84 80 80 80 77 75 64  
84 84 77 77 77 75 69 64  
85 84 76 75 74 71 67 64  
87 84 76 75 7 3 70 66 64  
90 93 83 82 83 80 82 72  
92 90 81 79 82 79 75 69  
90 89 81 79 79 77 73 69  
91 90 81 78 78 76 71 70  
93 95 88 85 86 83 86 81  
94 92 85 82 85 82 80 74  
93 92 85 82 83 81 77 74  
95 93 86 81 83 80 76 74  
93 94 93 90 90 88 87 92  
93 92 89 85 87 84 83 77  
96 93 89 85 87 84 81 77  
97 94 90 85 87 84 81 77  
72  
70  
69  
82  
78  
75  
74  
86  
82  
80  
79  
90  
86  
84  
84  
95  
88  
87  
88  
76  
75  
74  
84  
81  
79  
79  
89  
86  
84  
84  
92  
89  
88  
88  
97  
92  
91  
92  
1400  
2000  
2600  
3200  
3800  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
2000  
2600  
3200  
3800  
100  
80  
60  
50  
100  
80  
60  
50  
50  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
20  
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QEI-12 Class II  
12  
10  
8
RPM  
BHP  
Performance Data  
50% WOV  
7
½
5
3
% WOV  
Maximum Fan RPM  
4000  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
60% WOV  
25  
20  
15  
10  
5
Specification Data  
70% WOV  
Maximum Motor  
Frame Size  
184T  
.25 kW  
Minimum Motor  
Starting hp  
1/3 hp  
15 in.  
80% WOV  
6
2
Wheel Diameter  
381 mm  
82 kg.  
1½  
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 2345)3  
Outlet Velocity (FPM) = CFM / 1.56  
Tip Speed (FPM) = Fan RPM x 3.93  
4
180 lbs.  
1
¾
90% WOV  
½
2
1600  
0
0
% WOV = (CFM x 100) / (Fan RPM x 1.16)  
0
0
1
2
3
4
5
Volume (cfm x 1000)  
Imperial data — Metric data  
2
4
6
8
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0
0.5  
1
2
3
4
5
6
7
RPM  
1203  
1375  
1547  
1719  
1891  
2062  
2234  
2406  
2578  
2750  
2922  
3094  
BHP  
0.08  
0.12  
0.17  
0.24  
0.32  
0.41  
0.52  
0.65  
0.80  
0.98  
1.17  
1.39  
RPM  
1460  
1604  
1752  
1906  
2062  
2221  
2381  
2543  
2706  
2871  
3036  
3202  
BHP  
0.21  
0.26  
0.33  
0.41  
0.50  
0.61  
0.74  
0.88  
1.05  
1.24  
1.45  
1.68  
RPM  
1696  
1812  
1943  
2080  
2223  
2370  
2519  
2673  
2829  
2987  
3145  
3305  
BHP  
0.37  
0.43  
0.51  
0.60  
0.71  
0.83  
0.97  
1.13  
1.31  
1.51  
1.74  
1.99  
RPM  
2131  
2213  
2301  
2410  
2522  
2653  
2785  
2921  
3064  
3209  
3356  
3504  
BHP  
0.75  
0.84  
0.93  
1.05  
1.17  
1.32  
1.48  
1.66  
1.87  
2.10  
2.35  
2.62  
RPM  
2510  
2574  
2641  
2728  
2817  
2924  
3035  
3157  
3289  
3421  
3556  
3699  
BHP  
1.21  
1.31  
1.43  
1.56  
1.71  
1.88  
2.06  
2.27  
2.49  
2.74  
3.01  
3.32  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
1400  
1600  
1800  
2000  
2200  
2400  
2600  
2800  
3000  
3200  
3400  
3600  
891  
1019  
1146  
1273  
1401  
1528  
1656  
1783  
1910  
2038  
2165  
2292  
2894  
2957  
3021  
3102  
3190  
3283  
3393  
3504  
3624  
3755  
3887  
1.84  
1.98  
2.13  
2.30  
2.49  
2.70  
2.92  
3.17  
3.44  
3.74  
4.06  
3239  
3302  
3366  
3443  
3530  
3618  
3722  
3831  
3943  
2.59  
2.76  
2.95  
3.15  
3.38  
3.63  
3.90  
4.19  
4.50  
3557  
3620  
3684  
3759  
3846  
3934  
3.43  
3.64  
3.86  
4.11  
4.38  
4.67  
3854  
3917  
3981  
4.37  
4.62  
4.88  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1600  
% 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
7
8
LWi  
A
RPM  
1600  
% 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
7
8
LWo  
79  
A
72 77 77 74 70 69 69 56  
74 79 75 69 66 67 61 55  
73 80 75 66 64 64 58 55  
74 80 76 65 63 63 57 54  
76 77 78 78 76 75 76 67  
76 78 76 74 72 72 68 63  
76 79 75 71 70 70 66 62  
77 79 75 71 69 68 64 62  
83 82 83 80 80 78 78 79  
86 86 81 77 76 75 73 68  
85 91 79 76 75 75 72 67  
86 89 80 76 74 74 70 67  
83 86 85 83 83 82 80 85  
87 86 83 80 80 79 76 72  
87 90 82 79 79 78 76 71  
87 89 83 80 78 78 75 71  
80 89 86 86 87 86 84 89  
82 83 83 81 83 82 79 76  
84 82 85 81 82 81 79 75  
84 83 85 83 82 81 79 75  
77  
73  
72  
72  
82  
78  
76  
76  
86  
82  
82  
81  
90  
85  
85  
85  
93  
88  
87  
88  
87 83 78 75 74 71 69 58  
84 85 73 70 71 69 63 58  
85 84 73 68 68 66 61 58  
87 84 73 68 68 65 60 59  
89 85 80 80 80 77 75 67  
87 84 77 76 77 74 70 66  
88 82 77 74 74 72 67 66  
89 83 77 74 74 71 67 66  
97 89 86 83 84 81 78 78  
91 90 83 80 82 79 75 71  
91 87 83 79 80 77 73 71  
93 88 83 79 79 76 73 70  
98 91 88 86 88 85 81 84  
93 90 86 83 85 82 79 75  
93 89 86 83 84 81 78 75  
95 89 86 83 83 81 77 74  
95 90 90 89 91 89 85 87  
76  
75  
74  
84  
81  
79  
79  
89  
86  
85  
84  
92  
89  
89  
88  
96  
92  
92  
91  
2200  
2800  
3400  
4000  
2200  
2800  
3400  
4000  
94  
88 87 85 88 86 82 78  
94 89 89 85 88 85 82 78  
94 89 88 86 87 84 82 78  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
21  
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QEI-15 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
5
RPM  
BHP  
50% WOV  
60% WOV  
14  
12  
10  
8
QEI-L  
QEI  
2721  
2721  
Maximum  
Fan RPM  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
3
2
70% WOV  
Specification Data  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
184T  
213T  
80% WOV  
Minimum Motor  
Starting hp  
Wheel Diameter  
1/3 hp  
18.25 in.  
QEI-L 140 lbs. 64 kg.  
QEI 190 lbs. 82 kg.  
.25 kW  
1
6
464 mm  
Approximate Weight  
(Less Motor & Drives)  
90% WOV  
4
½
¼
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  
2
0
0
1
2
3
4
5
6
7
Volume (cfm x 1000)  
0
2
4
6
8
10  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.12  
0.17  
0.24  
0.33  
0.44  
0.58  
0.75  
0.95  
1.19  
1.47  
1.79  
2.16  
RPM  
965  
BHP  
0.21  
0.28  
0.36  
0.46  
0.59  
0.74  
0.93  
1.14  
1.40  
1.69  
2.03  
2.41  
RPM  
1229  
1301  
1391  
1495  
1615  
1740  
1870  
2003  
2141  
2282  
2426  
2570  
BHP  
0.44  
0.52  
0.62  
0.75  
0.92  
1.11  
1.31  
1.55  
1.83  
2.16  
2.52  
2.94  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
1700  
2100  
2500  
2900  
3300  
3700  
4100  
4500  
4900  
5300  
5700  
6100  
732  
823  
905  
952  
1072  
1194  
1323  
1456  
1597  
1740  
1885  
2031  
2180  
2330  
2481  
1508  
1580  
1662  
1763  
1875  
1996  
2121  
2251  
2383  
2517  
2657  
0.81  
0.93  
1.07  
1.25  
1.47  
1.73  
2.01  
2.31  
2.65  
3.04  
3.48  
1077  
1250  
1422  
1594  
1767  
1939  
2112  
2284  
2456  
2629  
1088  
1231  
1376  
1524  
1674  
1825  
1977  
2130  
2283  
2436  
1753  
1827  
1907  
2008  
2114  
2234  
2356  
2483  
2613  
1.27  
1.43  
1.62  
1.86  
2.13  
2.45  
2.82  
3.20  
3.61  
1915  
1976  
2054  
2135  
2236  
2339  
2458  
2579  
2704  
1.64  
1.83  
2.03  
2.27  
2.56  
2.90  
3.29  
3.73  
4.20  
2122  
2188  
2266  
2350  
2451  
2553  
2672  
2.24  
2.47  
2.73  
3.02  
3.38  
3.77  
4.24  
2257  
2317  
2390  
2469  
2556  
2657  
2.68  
2.94  
3.22  
3.52  
3.88  
4.30  
2443  
2505  
2583  
2663  
3.42  
3.72  
4.05  
4.41  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1
2
3
4
5
6
7
8
LWi  
60  
A
RPM  
650  
% WOV  
1
2
3
4
5
6
7
8
LWo  
63  
A
100  
80  
63 61 59 56 57 52 48 35  
62 59 59 53 54 51 48 35  
60 59 57 52 54 51 47 35  
60 59 56 52 53 51 47 35  
65 66 68 65 60 63 52 44  
63 63 65 62 58 56 51 42  
63 63 63 60 57 55 50 42  
66 64 63 59 57 55 50 42  
69 77 73 72 69 67 69 53  
68 76 70 68 66 63 58 50  
67 70 68 66 65 62 57 50  
68 71 70 65 64 61 56 50  
73 73 82 81 78 74 77 65  
68 76 76 78 74 72 67 61  
75 77 77 76 72 70 67 62  
81 80 77 76 72 71 67 61  
79 78 86 88 86 83 80 83  
80 73 83 85 81 79 74 69  
78 75 78 81 79 77 73 69  
80 79 80 81 78 76 74 70  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
74 65 60 58 59 54 52 39  
69 64 59 57 57 55 52 40  
70 64 58 56 57 54 52 40  
71 64 58 56 57 55 52 40  
73 73 66 68 65 64 55 47  
75 74 64 66 63 60 56 47  
76 73 64 65 62 59 55 47  
77 74 64 65 62 59 55 47  
79 79 74 74 73 69 70 56  
79 74 72 71 71 67 61 55  
77 75 73 69 68 66 61 55  
80 75 72 69 68 65 61 55  
83 82 81 83 82 78 78 68  
79 78 77 79 79 75 70 63  
83 81 78 77 77 74 69 64  
86 83 79 77 76 73 69 64  
91 85 87 90 90 86 82 84  
59  
58  
58  
68  
64  
63  
62  
75  
71  
69  
69  
84  
80  
78  
78  
91  
86  
84  
83  
62  
61  
61  
70  
68  
68  
68  
78  
74  
73  
73  
86  
82  
81  
81  
94  
90  
88  
88  
650  
1000  
1400  
2000  
2721  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
1000  
1400  
2000  
2721  
100  
80  
60  
50  
100  
80  
100  
80  
88  
83 81 84 86 84 78 72  
60  
50  
60  
50  
87 87 83 82 83 81 77 71  
90 89 85 83 83 81 76 72  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
22  
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QEI-15 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
10  
7½  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
3445  
5
70% WOV  
Specification Data  
20  
15  
10  
5
Maximum Motor  
Frame Size  
215T  
80% WOV  
3
2
Minimum Motor  
Starting hp  
1/3 hp  
18.25 in. 464 mm  
220 lbs. 100 kg.  
.25 kW  
Wheel Diameter  
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 1666)3  
Outlet Velocity (FPM) = CFM / 2.32  
Tip Speed (FPM) = Fan RPM x 4.78  
90% WOV  
1
0
% WOV = (CFM x 100) / (Fan RPM x 2.20)  
0
1
2
3
4
5
6
7
8
Volume (cfm x 1000)  
Imperial data — Metric data  
0
2
4
6
8
10  
12  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
1315  
1436  
1559  
1684  
1810  
1938  
2067  
2197  
2328  
2460  
2592  
2724  
BHP  
0.42  
0.53  
0.65  
0.79  
0.96  
1.15  
1.37  
1.61  
1.89  
2.20  
2.55  
2.93  
RPM  
1471  
1575  
1687  
1805  
1926  
2047  
2170  
2294  
2420  
2546  
2673  
2802  
BHP  
0.64  
0.77  
0.92  
1.10  
1.30  
1.52  
1.76  
2.04  
2.34  
2.67  
3.04  
3.45  
RPM  
1790  
1864  
1948  
2034  
2137  
2242  
2353  
2471  
2590  
2710  
2831  
2953  
BHP  
1.23  
1.38  
1.54  
1.72  
1.95  
2.21  
2.50  
2.84  
3.22  
3.64  
4.07  
4.53  
RPM  
2082  
2131  
2201  
2275  
2358  
2443  
2538  
2641  
2746  
2856  
2973  
3092  
BHP  
1.91  
2.09  
2.29  
2.51  
2.75  
3.01  
3.31  
3.67  
4.05  
4.49  
4.99  
5.53  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
2500  
2800  
3100  
3400  
3700  
4000  
4300  
4600  
4900  
5200  
5500  
5800  
1077  
1206  
1336  
1465  
1594  
1724  
1853  
1982  
2112  
2241  
2370  
2500  
2392  
2435  
2500  
2570  
2647  
2730  
2816  
2908  
3011  
3115  
3221  
2.88  
3.11  
3.36  
3.64  
3.94  
4.26  
4.61  
5.01  
5.47  
5.96  
6.50  
2670  
2713  
2771  
2841  
2913  
2995  
3080  
3165  
3259  
3362  
3.99  
4.28  
4.59  
4.92  
5.29  
5.67  
6.09  
6.53  
7.04  
7.61  
2884  
2926  
2968  
3023  
3093  
3164  
3243  
3326  
3411  
4.93  
5.25  
5.59  
5.96  
6.36  
6.78  
7.24  
7.72  
8.23  
3122  
3164  
3207  
3261  
3331  
3402  
6.28  
6.66  
7.05  
7.48  
7.94  
8.43  
3347  
3389  
3431  
7.76  
8.20  
8.65  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1000  
% 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
7
8
LWi  
A
RPM  
1000  
% 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
7
8
LWo  
74  
A
64 70 70 72 66 65 55 48  
62 66 67 66 63 60 52 43  
61 62 63 62 61 58 51 42  
62 63 63 62 60 58 51 41  
67 69 73 74 71 72 64 56  
66 65 71 72 68 67 61 53  
67 66 68 68 66 65 58 51  
69 67 69 67 65 63 57 52  
71 73 78 77 77 75 79 66  
67 69 76 75 74 73 70 62  
71 71 74 74 72 71 68 61  
75 74 76 74 72 71 67 61  
78 78 79 85 85 83 87 77  
79 74 76 85 84 80 77 71  
81 78 77 82 82 78 75 70  
81 80 79 82 81 78 74 70  
79 82 84 89 90 88 91 87  
75 79 81 85 87 85 83 78  
79 83 82 82 84 83 81 77  
81 85 85 86 85 82 80 77  
73  
68  
65  
65  
78  
75  
71  
71  
84  
79  
77  
77  
91  
88  
85  
85  
96  
91  
89  
90  
76 75 69 72 70 67 55 47  
75 72 67 67 68 62 53 44  
75 72 67 64 66 60 53 44  
75 71 67 64 65 60 52 44  
80 76 74 76 76 73 66 56  
78 74 71 72 74 69 62 52  
79 75 71 70 72 67 60 52  
79 75 71 70 72 67 60 52  
90 81 81 83 82 78 79 66  
88 78 77 79 80 76 72 65  
87 82 78 77 78 74 69 63  
89 83 79 78 78 73 69 64  
87 85 85 88 90 86 86 78  
85 85 83 83 88 83 79 72  
88 89 87 82 86 81 77 71  
89 90 87 83 86 80 77 72  
91 90 91 93 95 93 92 89  
71  
69  
68  
80  
77  
75  
75  
87  
84  
82  
82  
94  
90  
89  
89  
100  
96  
94  
94  
1400  
2000  
2700  
3445  
1400  
2000  
2700  
3445  
89  
92 91 89 92 89 86 80  
92 94 93 87 90 87 84 79  
93 94 93 89 90 87 83 78  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
23  
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QEI-16 Class I & QEI-L  
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
60% WOV  
5
7½  
QEI-L  
QEI  
2300  
2483  
16  
14  
12  
10  
8
% WOV  
Maximum  
Fan RPM  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
70% WOV  
Specification Data  
Maximum  
QEI-L  
184T  
213T  
3
Motor  
Frame Size  
80% WOV  
QEI  
Minimum Motor  
Starting hp  
Wheel Diameter  
1/3 hp  
20 in.  
QEI-L 160 lbs. 73 kg.  
QEI 220 lbs. 100 kg.  
.25 kW  
1½  
508 mm  
6
Approximate Weight  
(Less Motor & Drives)  
90% WOV  
¾
4
1/3  
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  
2
0
0
1
2
3
4
5
6
7
8
9
Volume (cfm x 1000)  
0
2
4
6
8
10  
12  
14  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.19  
0.25  
0.33  
0.43  
0.55  
0.69  
0.85  
1.05  
1.27  
1.52  
1.81  
2.14  
RPM  
951  
BHP  
0.31  
0.39  
0.48  
0.59  
0.72  
0.88  
1.06  
1.27  
1.51  
1.77  
2.08  
2.42  
RPM  
1169  
1230  
1307  
1389  
1479  
1573  
1673  
1774  
1878  
1984  
2092  
2201  
BHP  
0.59  
0.69  
0.81  
0.95  
1.11  
1.29  
1.50  
1.74  
2.01  
2.31  
2.64  
3.01  
RPM  
1362  
1411  
1471  
1538  
1616  
1700  
1789  
1880  
1979  
2080  
2181  
2284  
BHP  
0.94  
1.05  
1.18  
1.33  
1.52  
1.73  
1.97  
2.24  
2.54  
2.87  
3.23  
3.63  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
2400  
2800  
3200  
3600  
4000  
4400  
4800  
5200  
5600  
6000  
6400  
6800  
860  
837  
1003  
1146  
1290  
1433  
1577  
1720  
1863  
2007  
2150  
2293  
2437  
939  
1039  
1134  
1235  
1338  
1445  
1554  
1664  
1774  
1886  
1999  
2113  
1576  
1625  
1684  
1747  
1824  
1901  
1989  
2078  
2170  
2269  
2369  
1.45  
1.60  
1.77  
1.96  
2.20  
2.46  
2.76  
3.09  
3.45  
3.84  
4.27  
1046  
1155  
1266  
1378  
1492  
1607  
1722  
1837  
1954  
2070  
1770  
1820  
1879  
1940  
2016  
2093  
2177  
2265  
2355  
2449  
2.06  
2.25  
2.46  
2.69  
2.98  
3.30  
3.65  
4.04  
4.47  
4.93  
1904  
1950  
2002  
2062  
2121  
2198  
2274  
2355  
2443  
2.54  
2.76  
2.99  
3.25  
3.52  
3.87  
4.25  
4.66  
5.11  
2073  
2119  
2174  
2234  
2294  
2371  
2447  
3.29  
3.55  
3.83  
4.13  
4.46  
4.86  
5.29  
2188  
2233  
2280  
2338  
2399  
2461  
3.85  
4.13  
4.43  
4.76  
5.11  
5.49  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1
2
3
4
5
6
7
8
LWi  
61  
A
RPM  
600  
% WOV  
1
2
3
4
5
6
7
8
LWo  
64  
A
100  
80  
65 62 60 57 57 52 47 34  
64 61 59 55 55 52 47 35  
62 60 57 53 54 52 47 35  
62 60 57 53 54 52 47 35  
65 67 68 65 61 62 51 43  
64 64 65 62 58 56 50 41  
63 63 63 60 57 55 49 41  
66 65 63 60 57 55 49 41  
71 78 73 72 69 67 67 51  
69 78 70 68 65 62 57 49  
68 71 68 66 65 61 57 50  
69 73 69 65 64 60 55 50  
73 75 81 80 77 75 75 62  
69 76 76 77 73 71 66 59  
75 77 77 75 71 70 66 60  
80 80 77 75 71 70 66 60  
80 80 88 88 86 83 81 84  
80 75 84 85 81 79 74 69  
78 77 80 82 79 77 74 70  
81 80 82 81 78 77 74 70  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
75 66 60 59 60 55 51 39  
70 65 60 58 58 55 51 39  
71 64 59 57 58 55 51 40  
72 64 59 57 57 55 51 40  
74 73 67 68 65 63 55 46  
76 73 65 66 63 60 55 46  
76 72 64 65 62 59 54 46  
77 73 65 65 62 59 54 46  
80 80 74 74 72 70 68 54  
78 75 72 71 70 66 61 54  
77 75 72 69 68 65 60 55  
79 76 72 69 68 65 60 55  
82 82 81 83 81 78 76 65  
79 78 77 79 78 74 69 62  
83 80 77 77 76 73 68 62  
86 82 79 77 75 72 68 63  
91 86 88 90 90 87 83 85  
59  
59  
58  
68  
64  
63  
62  
75  
71  
69  
69  
83  
79  
77  
77  
92  
87  
84  
84  
62  
62  
62  
70  
68  
67  
67  
77  
74  
73  
73  
86  
82  
80  
80  
94  
90  
88  
88  
600  
900  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
900  
1250  
1750  
2483  
1250  
1750  
2483  
100  
80  
60  
50  
100  
80  
100  
80  
88  
84 82 85 87 84 78 72  
60  
50  
60  
50  
88 88 85 83 84 81 77 72  
90 89 86 84 84 81 77 72  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
24  
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QEI-16 Class II  
12  
11  
10  
9
Performance Data  
RPM  
BHP  
15  
50% WOV  
60% WOV  
10  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
3145  
7½  
25  
20  
15  
10  
5
Specification Data  
70% WOV  
Maximum Motor  
Frame Size  
215T  
.25 kW  
8
5
80% WOV  
Minimum Motor  
Starting hp  
7
1/3 hp  
20 in.  
6
3
2
Wheel Diameter  
508 mm  
109 kg.  
5
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 1430)3  
Outlet Velocity (FPM) = CFM / 2.79  
Tip Speed (FPM) = Fan RPM x 5.24  
4
240 lbs.  
90% WOV  
3
1
2
1
0
0
% WOV = (CFM x 100) / (Fan RPM x 2.89)  
0
1
2
3
4
5
6
7
8
9
10  
Volume (cfm x 1000)  
Imperial data — Metric data  
12  
14  
16  
0
2
4
6
8
10  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
1199  
1291  
1384  
1478  
1574  
1670  
1767  
1865  
1964  
2063  
2163  
2263  
BHP  
0.50  
0.61  
0.73  
0.86  
1.01  
1.18  
1.38  
1.59  
1.83  
2.10  
2.39  
2.71  
RPM  
1342  
1421  
1503  
1592  
1683  
1774  
1867  
1960  
2054  
2149  
2245  
2341  
BHP  
0.77  
0.89  
1.03  
1.20  
1.39  
1.61  
1.83  
2.06  
2.33  
2.62  
2.93  
3.27  
RPM  
1633  
1688  
1750  
1816  
1887  
1965  
2045  
2128  
2217  
2307  
2398  
2489  
BHP  
1.48  
1.62  
1.78  
1.95  
2.16  
2.39  
2.65  
2.94  
3.27  
3.63  
4.02  
4.45  
RPM  
1900  
1934  
1987  
2041  
2100  
2163  
2229  
2299  
2377  
2457  
2537  
2623  
BHP  
2.29  
2.47  
2.66  
2.88  
3.10  
3.35  
3.61  
3.91  
4.26  
4.63  
5.03  
5.48  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
3000  
3300  
3600  
3900  
4200  
4500  
4800  
5100  
5400  
5700  
6000  
6300  
1075  
1182  
1290  
1397  
1505  
1612  
1720  
1827  
1935  
2043  
2150  
2258  
2176  
2209  
2249  
2302  
2356  
2415  
2478  
2543  
2608  
2684  
2762  
3.41  
3.63  
3.88  
4.14  
4.42  
4.73  
5.05  
5.39  
5.76  
6.19  
6.66  
2424  
2456  
2488  
2539  
2592  
2646  
2707  
2770  
2835  
2900  
4.68  
4.96  
5.25  
5.57  
5.91  
6.27  
6.65  
7.05  
7.48  
7.93  
2650  
2682  
2715  
2758  
2811  
2865  
2920  
2983  
3046  
6.11  
6.44  
6.78  
7.15  
7.55  
7.97  
8.41  
8.87  
9.36  
2861  
2893  
2926  
2964  
3017  
3071  
3125  
7.68  
8.07  
8.46  
8.88  
9.34  
9.82  
10.3  
3060  
3092  
3124  
9.40  
9.84  
10.3  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
900  
% 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
7
8
LWi  
A
RPM  
900  
% 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
7
8
LWo  
74  
A
66 71 71 72 66 64 54 47  
63 67 67 66 63 59 51 42  
62 63 63 63 61 57 50 41  
63 64 63 62 60 57 50 40  
68 70 73 74 71 71 63 55  
66 67 71 72 69 67 60 52  
67 66 68 68 66 64 57 51  
69 68 69 67 65 63 57 51  
71 74 78 77 77 76 77 63  
67 70 77 74 73 72 68 61  
71 72 74 73 72 70 66 60  
74 74 76 74 71 70 65 60  
79 79 81 86 86 84 86 77  
80 75 78 86 84 80 77 71  
82 79 78 83 82 78 75 70  
82 81 80 83 82 78 74 70  
81 84 85 91 91 89 92 87  
77 80 81 86 88 85 83 78  
81 84 83 83 85 83 81 77  
83 86 86 87 85 83 80 77  
72  
68  
65  
65  
77  
74  
71  
70  
83  
79  
77  
77  
92  
88  
86  
86  
97  
92  
90  
90  
77 76 70 72 70 66 55 47  
75 73 67 67 67 61 52 43  
75 73 67 65 65 60 52 43  
75 72 67 64 65 59 52 43  
80 76 75 77 76 72 64 54  
78 74 71 73 73 68 60 51  
79 74 71 71 72 66 59 51  
78 75 71 70 71 66 59 51  
88 81 82 83 81 78 76 63  
86 78 77 79 79 75 70 63  
86 81 78 77 77 73 68 62  
88 82 79 78 77 72 68 62  
88 86 86 89 91 87 86 78  
86 86 84 84 88 83 79 72  
89 90 87 83 86 81 77 71  
90 91 87 84 86 81 77 72  
92 91 92 94 96 93 93 90  
71  
69  
68  
79  
76  
75  
75  
86  
83  
81  
81  
95  
91  
90  
89  
100  
97  
95  
95  
1250  
1750  
2475  
3145  
1250  
1750  
2475  
3145  
90  
93 91 90 93 90 86 80  
93 95 93 88 91 88 84 79  
94 95 94 90 91 87 83 79  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
25  
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QEI-18 Class I & QEI-L  
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
7½  
50% WOV  
60% WOV  
QEI-L  
QEI  
2232  
2232  
Maximum  
Fan RPM  
16  
14  
12  
10  
8
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
5
70% WOV  
Specification Data  
Maximum  
QEI-L  
215T  
215T  
Motor  
Frame Size  
80% WOV  
3
QEI  
Minimum Motor  
Starting hp  
Wheel Diameter  
1/3 hp  
22.5 in.  
QEI-L 190 lbs. 87 kg.  
QEI 260 lbs. 118 kg.  
.25 kW  
1½  
565 mm  
6
90% WOV  
Approximate Weight  
(Less Motor & Drives)  
¾
4
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  
1/3  
2
0
0
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  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.17  
0.23  
0.31  
0.42  
0.54  
0.69  
0.87  
1.08  
1.33  
1.62  
1.94  
2.31  
RPM  
814  
BHP  
0.30  
0.37  
0.46  
0.58  
0.72  
0.89  
1.09  
1.32  
1.58  
1.88  
2.23  
2.61  
RPM  
1026  
1080  
1142  
1213  
1293  
1376  
1466  
1558  
1653  
1752  
1851  
1952  
BHP  
0.62  
0.72  
0.84  
0.97  
1.13  
1.32  
1.55  
1.81  
2.11  
2.44  
2.82  
3.24  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
2600  
3100  
3600  
4100  
4600  
5100  
5600  
6100  
6600  
7100  
7600  
8100  
753  
697  
788  
898  
889  
1250  
1300  
1358  
1425  
1498  
1578  
1660  
1748  
1840  
1932  
2028  
1.12  
1.26  
1.43  
1.61  
1.81  
2.06  
2.33  
2.66  
3.02  
3.43  
3.88  
1407  
1445  
1494  
1552  
1616  
1686  
1763  
1843  
1926  
2015  
2106  
1.57  
1.73  
1.92  
2.14  
2.37  
2.62  
2.92  
3.26  
3.63  
4.07  
4.56  
1043  
1188  
1333  
1478  
1623  
1768  
1913  
2057  
2202  
2347  
886  
972  
1583  
1622  
1672  
1730  
1793  
1862  
1936  
2016  
2097  
2182  
2.24  
2.45  
2.70  
2.96  
3.25  
3.56  
3.91  
4.31  
4.75  
5.25  
986  
1062  
1156  
1254  
1355  
1456  
1558  
1662  
1768  
1875  
1746  
1785  
1839  
1897  
1959  
2029  
2100  
2180  
3.03  
3.28  
3.58  
3.91  
4.25  
4.62  
5.02  
5.49  
1861  
1899  
1940  
1997  
2055  
2118  
2187  
3.63  
3.91  
4.22  
4.58  
4.96  
5.37  
5.79  
1088  
1192  
1298  
1405  
1513  
1620  
1729  
1837  
2006  
2044  
2090  
2148  
2206  
4.57  
4.91  
5.28  
5.69  
6.14  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
1
2
3
4
5
6
7
8
LWi  
65  
A
RPM  
550  
% WOV  
1
2
3
4
5
6
7
8
LWo  
68  
A
100  
80  
65 68 68 64 57 52 49 41  
61 67 68 64 56 52 48 40  
60 67 68 64 56 52 48 39  
62 67 67 64 56 51 48 39  
66 70 69 64 59 61 49 41  
62 66 68 62 58 56 49 40  
61 64 66 60 55 55 49 40  
64 64 66 59 55 54 48 40  
70 78 73 72 67 68 66 53  
64 78 73 69 64 62 57 51  
66 73 70 67 62 61 57 52  
69 73 70 66 61 61 56 52  
77 80 87 82 78 75 77 64  
76 75 80 78 74 72 67 61  
78 77 83 75 71 70 66 62  
79 78 82 76 70 69 66 62  
80 83 92 89 87 84 81 83  
74 78 87 85 85 81 76 71  
80 79 82 82 82 78 74 70  
83 82 83 82 81 77 74 71  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
74 74 67 66 63 55 53 45  
72 73 68 68 62 56 56 50  
69 72 67 67 62 56 56 51  
69 72 67 67 62 56 57 52  
74 75 68 67 64 62 54 43  
71 73 66 65 63 58 54 43  
72 70 66 63 62 57 54 43  
72 70 65 63 61 57 54 43  
77 84 75 74 72 68 65 51  
73 80 70 71 69 64 59 50  
75 77 69 69 67 63 58 50  
77 77 70 69 66 62 58 51  
82 83 84 84 83 77 75 64  
78 83 80 80 80 75 70 64  
82 82 77 78 77 74 69 64  
86 84 78 78 76 73 69 64  
88 87 91 93 92 87 82 82  
65  
65  
64  
67  
65  
63  
63  
75  
71  
69  
69  
85  
80  
79  
78  
92  
89  
86  
85  
68  
68  
68  
70  
68  
66  
66  
77  
74  
72  
71  
87  
83  
81  
81  
95  
93  
91  
90  
550  
800  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
800  
1100  
1600  
2232  
1100  
1600  
2232  
100  
80  
60  
50  
100  
80  
100  
80  
83  
83 85 89 90 85 79 72  
60  
50  
60  
50  
88 89 83 87 88 82 77 71  
93 92 85 86 87 81 76 72  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
26  
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QEI-18 Class II  
12  
11  
10  
9
Performance Data  
RPM  
BHP  
15  
10  
50% WOV  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
2777  
25  
20  
15  
10  
5
Specification Data  
7½  
70% WOV  
Maximum Motor  
Frame Size  
254T  
8
5
80% WOV  
Minimum Motor  
Starting hp  
7
1/3 hp  
.25 kW  
6
Wheel Diameter  
22.25 in. 565 mm  
3
2
5
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 1219)3  
Outlet Velocity (FPM) = CFM / 3.45  
Tip Speed (FPM) = Fan RPM x 5.83  
4
310 lbs.  
141 kg.  
90% WOV  
3
1
2
1
0
0
% WOV = (CFM x 100) / (Fan RPM x 3.80)  
4
5
6
7
8
9
10  
11  
0
1
2
3
Volume (cfm x 1000)  
Imperial data — Metric data  
0
5
10  
15  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
1124  
1219  
1315  
1413  
1511  
1611  
1711  
1812  
1913  
2015  
2117  
2219  
BHP  
0.64  
0.79  
0.96  
1.16  
1.40  
1.66  
1.96  
2.29  
2.66  
3.07  
3.53  
4.03  
RPM  
1239  
1326  
1414  
1503  
1595  
1690  
1786  
1883  
1981  
2079  
2178  
2277  
BHP  
0.97  
1.14  
1.34  
1.56  
1.82  
2.11  
2.44  
2.81  
3.21  
3.66  
4.16  
4.70  
RPM  
1467  
1538  
1609  
1682  
1758  
1844  
1932  
2020  
2110  
2200  
2295  
2390  
BHP  
1.74  
1.98  
2.25  
2.50  
2.77  
3.11  
3.48  
3.89  
4.34  
4.83  
5.38  
5.98  
RPM  
1690  
1738  
1787  
1858  
1929  
2001  
2075  
2150  
2236  
2323  
2411  
2500  
BHP  
2.65  
2.88  
3.15  
3.50  
3.89  
4.29  
4.66  
5.07  
5.57  
6.12  
6.70  
7.34  
RPM  
1900  
1934  
1977  
2024  
2079  
2150  
2221  
2293  
2366  
2440  
2521  
2608  
BHP  
3.67  
3.94  
4.24  
4.56  
4.94  
5.42  
5.94  
6.50  
6.98  
7.49  
8.10  
8.78  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
3800  
4200  
4600  
5000  
5400  
5800  
6200  
6600  
7000  
7400  
7800  
8200  
1101  
1217  
1333  
1449  
1565  
1681  
1797  
1913  
2028  
2144  
2260  
2376  
2120  
2154  
2193  
2241  
2289  
2354  
2424  
2495  
2568  
2641  
2715  
5.09  
5.42  
5.78  
6.18  
6.60  
7.14  
7.76  
8.42  
9.11  
9.71  
10.4  
2290  
2323  
2356  
2394  
2441  
2489  
2544  
2615  
2686  
2757  
6.31  
6.69  
7.09  
7.51  
7.98  
8.48  
9.06  
9.77  
10.5  
11.3  
2478  
2511  
2545  
2582  
2629  
2676  
2726  
8.02  
8.47  
8.93  
9.42  
9.97  
10.5  
11.2  
2656  
2689  
2723  
2760  
9.91  
10.4  
10.9  
11.5  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
800  
% 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
7
8
LWi  
A
RPM  
800  
% 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
7
8
LWo  
72  
A
66 75 67 66 63 65 51 43  
63 71 64 63 62 62 51 41  
62 69 63 61 62 63 53 42  
77 73 69 65 62 62 50 41  
70 78 72 72 68 72 60 51  
62 73 68 67 66 66 57 48  
63 72 66 66 65 66 57 49  
66 72 67 65 64 65 56 49  
78 79 82 80 78 76 80 64  
71 76 77 75 74 73 67 60  
73 76 74 73 72 72 67 61  
77 77 76 73 72 71 66 61  
81 84 89 88 87 84 87 78  
75 78 83 83 82 80 76 69  
79 81 84 81 79 78 75 71  
83 83 84 81 78 77 74 70  
85 88 89 93 93 90 91 87  
80 83 85 89 90 87 82 76  
84 86 85 88 87 85 80 76  
87 89 89 88 86 84 80 76  
70  
67  
67  
68  
76  
71  
71  
70  
85  
79  
77  
77  
93  
87  
85  
85  
98  
93  
91  
91  
73 79 66 69 68 66 54 45  
70 76 63 67 66 63 53 46  
70 74 63 65 66 63 53 46  
70 75 63 65 65 62 53 47  
78 83 74 76 74 72 63 53  
73 77 69 73 72 68 60 50  
75 75 68 71 71 68 60 52  
77 77 70 71 70 68 60 53  
87 86 83 85 84 78 79 64  
84 80 77 81 80 75 70 61  
85 80 77 79 78 74 70 62  
86 82 78 79 77 74 69 62  
89 89 91 92 91 86 86 80  
85 86 85 88 89 83 79 73  
89 88 86 86 87 82 78 73  
91 89 88 87 86 81 77 73  
93 94 93 96 97 93 91 88  
70  
70  
69  
79  
76  
74  
75  
88  
84  
82  
82  
96  
92  
90  
90  
1100  
1600  
2200  
2777  
1100  
1600  
2200  
2777  
101  
97  
95  
88  
91 89 92 94 90 86 79  
94 94 92 89 92 88 84 79  
96 95 92 91 92 88 84 79  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
27  
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QEI-20 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
7½  
14  
12  
10  
8
QEI-L  
QEI  
1900  
2027  
Maximum  
Fan RPM  
% WOV  
60% WOV  
10  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
5
Specification Data  
70% WOV  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
215T  
215T  
3
2
80% WOV  
Minimum Motor  
Starting hp  
Wheel Diameter  
1/3 hp  
24.5 in.  
QEI-L 230 lbs. 105 kg.  
QEI 310 lbs. 141 kg.  
.25 kW  
6
622 mm  
90% WOV  
1
Approximate Weight  
(Less Motor & Drives)  
4
½
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  
2
0
0
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
Volume (cfm x 1000)  
0
5
10  
15  
20  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.19  
0.27  
0.39  
0.53  
0.72  
0.95  
1.23  
1.56  
1.96  
2.41  
2.94  
3.55  
RPM  
724  
BHP  
0.35  
0.44  
0.57  
0.74  
0.95  
1.20  
1.50  
1.86  
2.28  
2.76  
3.32  
3.95  
RPM  
923  
BHP  
0.73  
0.86  
1.02  
1.21  
1.45  
1.74  
2.09  
2.49  
2.95  
3.48  
4.08  
4.76  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
3000  
3700  
4400  
5100  
5800  
6500  
7200  
7900  
8600  
9300  
724  
613  
708  
893  
801  
975  
1132  
1183  
1245  
1317  
1398  
1483  
1574  
1669  
1766  
1868  
1972  
1.34  
1.54  
1.78  
2.03  
2.34  
2.71  
3.15  
3.66  
4.23  
4.88  
5.60  
1062  
1231  
1400  
1570  
1739  
1908  
2077  
2246  
810  
887  
1040  
1116  
1201  
1292  
1388  
1486  
1590  
1694  
1800  
1907  
1314  
1368  
1428  
1501  
1577  
1662  
1748  
1842  
1937  
2.11  
2.38  
2.70  
3.03  
3.41  
3.88  
4.40  
5.01  
5.71  
1440  
1480  
1538  
1599  
1671  
1746  
1830  
1915  
2005  
2.73  
3.03  
3.38  
3.78  
4.19  
4.66  
5.22  
5.84  
6.56  
915  
982  
1593  
1637  
1697  
1759  
1832  
1907  
1990  
3.73  
4.11  
4.54  
5.02  
5.52  
6.07  
6.74  
1697  
1738  
1789  
1849  
1913  
1985  
4.47  
4.88  
5.34  
5.86  
6.42  
7.02  
1023  
1133  
1245  
1357  
1470  
1584  
1698  
1812  
1082  
1187  
1292  
1400  
1508  
1619  
1731  
1843  
1835  
1875  
1934  
1994  
5.69  
6.17  
6.74  
7.35  
10000 2415  
10700 2584  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
500  
1
2
3
4
5
6
7
8
LWi  
65  
65  
65  
65  
A
RPM  
500  
% WOV  
1
2
3
4
5
6
7
8
LWo  
68  
A
100  
80  
66 69 68 64 57 53 49 40  
63 69 68 64 56 52 48 40  
62 69 68 64 56 52 48 39  
64 68 68 64 56 52 48 39  
66 70 68 63 60 59 48 40  
62 67 67 62 57 55 48 38  
61 65 65 59 55 54 47 39  
63 65 65 59 55 53 47 38  
72 79 74 72 68 69 65 52  
67 79 73 69 65 62 57 51  
68 74 70 67 63 61 57 52  
71 74 70 66 62 61 57 52  
79 82 87 82 78 76 76 63  
77 77 81 78 75 72 67 61  
79 79 82 76 71 70 66 63  
80 80 82 76 71 69 66 63  
82 85 93 90 88 84 82 84  
76 80 88 86 85 81 76 71  
81 81 83 83 82 78 74 71  
84 83 84 83 81 77 74 71  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
75 74 68 67 62 56 53 45  
73 73 68 68 62 56 56 50  
71 72 68 68 62 57 56 51  
70 72 68 67 62 57 57 52  
74 74 68 66 64 60 52 41  
72 72 66 64 62 58 52 41  
71 69 65 63 61 57 52 41  
71 69 65 62 61 56 52 41  
79 84 75 75 72 68 64 50  
75 80 71 72 70 64 58 50  
76 77 70 70 67 63 58 50  
78 77 70 69 67 63 58 51  
83 84 85 85 83 77 74 63  
79 82 81 81 80 75 69 63  
83 81 78 79 78 74 69 64  
86 83 79 79 76 73 69 64  
89 89 92 93 92 87 83 83  
69  
68  
68  
69  
67  
66  
65  
77  
74  
72  
72  
87  
84  
82  
81  
96  
93  
91  
90  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
66  
64  
62  
62  
75  
72  
70  
69  
85  
80  
79  
79  
93  
89  
86  
86  
700  
1000  
1450  
2027  
700  
1000  
1450  
2027  
100  
80  
60  
50  
100  
80  
100  
80  
84  
84 86 90 90 85 79 72  
60  
50  
60  
50  
89 89 85 88 88 82 77 72  
93 92 86 87 87 81 76 72  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
28  
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QEI-20 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
15  
10  
50% WOV  
% WOV  
60% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
2517  
7½  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
254T  
1/3 hp  
80% WOV  
5
Minimum Motor  
Starting hp  
.25 kW  
622 mm  
163 kg.  
3
Wheel Diameter  
24.5 in.  
360 lbs.  
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 1038)3  
Outlet Velocity (FPM) = CFM / 4.14  
Tip Speed (FPM) = Fan RPM x 6.41  
90% WOV  
1½  
0
% WOV = (CFM x 100) / (Fan RPM x 5.07)  
4
5
6
7
8
9
10  
11  
12  
13  
0
1
2
3
Volume (cfm x 1000)  
Imperial data — Metric data  
20  
0
5
10  
15  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
1002  
1090  
1181  
1272  
1364  
1457  
1551  
1645  
1740  
1835  
1930  
2026  
BHP  
0.74  
0.92  
1.13  
1.38  
1.66  
1.99  
2.36  
2.77  
3.24  
3.75  
4.33  
4.96  
RPM  
1110  
1189  
1271  
1355  
1440  
1529  
1619  
1710  
1801  
1893  
1986  
2079  
BHP  
1.14  
1.34  
1.58  
1.86  
2.18  
2.54  
2.95  
3.40  
3.91  
4.48  
5.10  
5.78  
RPM  
1319  
1384  
1451  
1519  
1589  
1670  
1751  
1834  
1918  
2003  
2092  
2181  
BHP  
2.05  
2.34  
2.67  
2.99  
3.32  
3.74  
4.20  
4.72  
5.28  
5.90  
6.59  
7.34  
RPM  
1526  
1570  
1615  
1679  
1745  
1813  
1882  
1953  
2033  
2115  
2197  
2280  
BHP  
3.15  
3.44  
3.75  
4.19  
4.67  
5.18  
5.64  
6.14  
6.77  
7.45  
8.20  
9.00  
RPM  
1719  
1750  
1788  
1833  
1882  
1948  
2015  
2082  
2151  
2220  
2297  
2378  
BHP  
4.38  
4.71  
5.08  
5.48  
5.94  
6.53  
7.18  
7.88  
8.48  
9.12  
9.89  
10.7  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
4500  
5000  
5500  
6000  
6500  
7000  
7500  
8000  
8500  
9000  
9500  
1076  
1196  
1315  
1435  
1555  
1674  
1794  
1913  
2033  
2153  
2272  
1920  
1951  
1986  
2031  
2075  
2135  
2201  
2268  
2336  
2404  
2474  
6.10  
6.51  
6.95  
7.44  
7.96  
8.64  
9.40  
10.2  
11.1  
11.8  
12.6  
2105  
2136  
2170  
2214  
2258  
2310  
2376  
2443  
2510  
8.04  
8.53  
9.05  
9.64  
10.3  
11.0  
11.9  
12.8  
13.8  
2246  
2277  
2308  
2342  
2386  
2430  
2477  
9.65  
10.2  
10.8  
11.4  
12.1  
12.8  
13.5  
2408  
2439  
2471  
2505  
11.9  
12.6  
13.2  
13.9  
10000 2392  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
700  
% 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
7
8
LWi  
A
RPM  
700  
% 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
7
8
LWo  
71  
A
68 74 67 66 64 62 49 42  
65 70 64 63 62 60 49 39  
64 68 62 61 62 61 51 40  
76 72 68 65 62 60 48 40  
72 80 73 72 70 71 60 51  
64 75 69 68 67 65 56 48  
65 74 67 67 66 65 57 49  
68 74 68 66 65 65 56 49  
79 80 82 81 79 77 79 63  
73 77 77 76 75 73 67 59  
75 77 75 73 72 72 67 61  
78 78 77 74 72 71 67 61  
82 86 91 89 87 85 87 78  
76 80 85 84 83 80 76 69  
81 83 85 81 80 78 75 71  
84 84 85 82 79 78 75 71  
88 89 90 94 94 90 92 87  
82 85 86 90 91 87 82 76  
86 87 85 89 87 85 80 76  
89 90 90 89 87 85 80 77  
69  
66  
66  
68  
76  
72  
71  
71  
85  
79  
78  
78  
93  
87  
86  
85  
99  
94  
92  
92  
74 76 66 69 67 63 52 43  
71 73 64 67 66 61 52 44  
71 72 63 65 65 61 52 45  
71 72 64 65 65 61 52 46  
80 85 75 76 75 72 63 52  
75 78 70 74 72 68 60 50  
76 77 69 71 71 68 60 52  
78 79 71 71 71 68 60 52  
88 86 84 86 83 79 77 63  
84 81 78 82 81 75 70 61  
85 80 78 80 79 74 69 62  
86 82 79 79 78 74 69 62  
90 90 92 93 91 87 86 80  
86 87 87 89 89 83 79 73  
90 88 87 87 87 82 78 73  
92 90 89 87 86 82 78 73  
95 94 93 97 98 93 92 89  
70  
69  
69  
79  
76  
75  
75  
88  
84  
83  
82  
96  
92  
90  
90  
1000  
1450  
2000  
2517  
1000  
1450  
2000  
2517  
102  
98  
96  
90  
92 89 93 96 90 86 79  
95 94 92 90 93 88 85 79  
97 96 93 92 93 88 84 79  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
29  
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QEI-22 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
10  
50% WOV  
14  
12  
10  
8
7½  
QEI-L  
QEI  
1800  
1839  
Maximum  
Fan RPM  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
60% WOV  
5
Specification Data  
70% WOV  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
215T  
254T  
80% WOV  
3
2
Minimum Motor  
Starting hp  
Wheel Diameter  
1/3 hp  
27 in.  
QEI-L 270 lbs. 123 kg.  
QEI 370 lbs. 168 kg.  
.25 kW  
6
686 mm  
Approximate Weight  
(Less Motor & Drives)  
1
4
90% WOV  
½
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  
2
0
0
2
4
6
8
10  
12  
14  
16  
Volume (cfm x 1000)  
0
5
10  
15  
20  
25  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.25  
0.34  
0.45  
0.60  
0.79  
1.02  
1.29  
1.61  
1.98  
2.41  
2.90  
3.46  
RPM  
662  
BHP  
0.44  
0.55  
0.69  
0.87  
1.08  
1.33  
1.62  
1.97  
2.37  
2.83  
3.35  
3.94  
RPM  
837  
BHP  
0.93  
1.07  
1.25  
1.46  
1.72  
2.01  
2.35  
2.75  
3.20  
3.70  
4.27  
4.91  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
3900  
4700  
5500  
6300  
7100  
7900  
8700  
9500  
762  
918  
564  
641  
725  
883  
1023  
1066  
1116  
1173  
1236  
1305  
1377  
1451  
1530  
1610  
1691  
1.68  
1.90  
2.14  
2.43  
2.77  
3.15  
3.59  
4.08  
4.64  
5.26  
5.95  
1075  
1231  
1388  
1544  
1700  
1857  
723  
796  
935  
1184  
1228  
1277  
1332  
1394  
1458  
1529  
1602  
1676  
1755  
2.61  
2.90  
3.22  
3.60  
4.02  
4.49  
5.03  
5.63  
6.29  
7.03  
1301  
1329  
1376  
1425  
1480  
1541  
1603  
1673  
1745  
1818  
3.38  
3.72  
4.08  
4.49  
4.94  
5.46  
6.03  
6.67  
7.38  
8.16  
806  
872  
997  
1434  
1466  
1515  
1564  
1619  
1680  
1742  
1809  
4.58  
4.99  
5.44  
5.93  
6.48  
7.09  
7.76  
8.51  
892  
953  
1065  
1137  
1213  
1293  
1374  
1456  
1539  
1624  
1560  
1598  
1646  
1696  
1751  
1813  
5.94  
6.44  
6.97  
7.54  
8.19  
8.91  
1650  
1678  
1723  
1772  
1822  
6.93  
7.47  
8.05  
8.67  
9.34  
979  
1035  
1118  
1204  
1290  
1377  
1465  
1554  
1068  
1156  
1246  
1335  
1426  
1516  
10300 2013  
11100 2170  
11900 2326  
12700 2482  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
450  
1
2
3
4
5
6
7
8
LWi  
65  
64  
63  
63  
70  
68  
66  
66  
78  
74  
72  
71  
87  
83  
79  
78  
97  
93  
89  
87  
A
RPM  
450  
% WOV  
1
2
3
4
5
6
7
8
LWo  
69  
A
100  
80  
68 69 64 60 59 59 52 38  
67 68 62 59 57 59 52 38  
66 67 60 58 56 58 52 38  
67 68 60 58 55 58 52 38  
70 75 70 67 64 65 54 43  
67 75 68 64 61 61 54 41  
67 74 65 62 59 60 53 41  
68 73 65 62 58 60 53 41  
73 79 78 74 71 72 61 53  
69 76 77 71 68 66 58 50  
70 73 74 68 66 63 56 50  
72 74 74 67 65 62 55 49  
76 89 85 83 81 78 79 65  
72 91 83 79 78 75 69 61  
74 83 79 76 74 71 65 61  
78 83 79 75 73 69 64 62  
81 86 99 94 91 88 88 77  
79 82 95 92 87 84 80 72  
80 82 87 87 84 81 76 71  
84 84 86 86 82 79 75 71  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
71 71 65 64 65 62 56 44  
71 70 63 63 64 62 57 44  
69 69 62 62 64 62 57 44  
72 70 61 61 64 62 57 45  
78 75 70 69 67 66 57 47  
76 74 70 69 67 65 58 47  
75 74 69 67 66 65 58 48  
75 74 69 65 65 65 58 48  
77 83 77 78 75 73 64 53  
73 80 74 76 73 69 62 51  
74 78 72 72 71 67 60 51  
77 79 72 71 70 66 60 51  
83 84 84 86 85 81 79 64  
81 82 80 83 82 77 71 60  
84 81 78 79 77 72 66 59  
88 83 79 78 76 71 65 60  
87 89 91 96 93 90 88 79  
68  
68  
68  
72  
72  
71  
71  
80  
78  
75  
74  
89  
85  
81  
81  
98  
94  
91  
90  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
650  
900  
650  
900  
100  
80  
60  
50  
100  
80  
1300  
1839  
1300  
1839  
100  
80  
86  
84 90 92 90 87 82 72  
60  
50  
60  
50  
91 89 87 89 87 83 78 71  
94 91 88 88 85 81 76 71  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
30  
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QEI-22 Class II  
10  
8
Performance Data  
RPM  
BHP  
60% WOV  
15  
20  
% WOV  
10  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
2265  
70% WOV  
Specification Data  
20  
15  
10  
5
7½  
Maximum Motor  
Frame Size  
256T  
.25 kW  
80% WOV  
6
Minimum Motor  
Starting hp  
5
1/3 hp  
27 in.  
Wheel Diameter  
686 mm  
191 kg.  
4
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 869)3  
Outlet Velocity (FPM) = CFM / 5.12  
Tip Speed (FPM) = Fan RPM x 7.07  
90% WOV  
420 lbs.  
2
2
0
0
18  
% WOV = (CFM x 100) / (Fan RPM x 7.17)  
0
2
4
6
8
10  
Volume (cfm x 1000)  
12  
14  
16  
Imperial data — Metric data  
25  
30  
0
5
10  
15  
20  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
882  
BHP  
0.81  
1.00  
1.22  
1.47  
1.76  
2.09  
2.46  
2.87  
3.33  
3.84  
4.40  
5.02  
RPM  
982  
BHP  
1.29  
1.51  
1.75  
2.03  
2.34  
2.71  
3.12  
3.58  
4.10  
4.66  
5.28  
5.96  
RPM  
1174  
1222  
1273  
1335  
1396  
1459  
1528  
1598  
1668  
1740  
1813  
1888  
BHP  
2.43  
2.69  
2.97  
3.32  
3.71  
4.13  
4.60  
5.11  
5.68  
6.29  
6.96  
7.72  
RPM  
1360  
1395  
1434  
1480  
1531  
1588  
1649  
1711  
1773  
1841  
1910  
1980  
BHP  
3.80  
4.11  
4.43  
4.81  
5.22  
5.69  
6.23  
6.81  
7.45  
8.13  
8.87  
9.66  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
5600  
6200  
6800  
7400  
8000  
8600  
9200  
9800  
1093  
1210  
1328  
1445  
1562  
1679  
1796  
1914  
956  
1045  
1115  
1185  
1257  
1331  
1407  
1483  
1560  
1637  
1715  
1794  
1564  
1588  
1626  
1666  
1714  
1764  
1820  
1881  
1942  
2005  
2068  
5.70  
6.07  
6.49  
6.94  
7.45  
8.00  
8.61  
9.32  
10.1  
10.9  
11.8  
1032  
1109  
1187  
1265  
1345  
1425  
1505  
1586  
1667  
1749  
1746  
1762  
1801  
1840  
1882  
1932  
1982  
2039  
2100  
2161  
7.86  
8.32  
8.83  
9.37  
9.96  
10.6  
11.3  
12.1  
13.0  
13.9  
1912  
1925  
1962  
2001  
2040  
2088  
2138  
2189  
2249  
10.3  
10.8  
11.4  
12.1  
12.8  
13.5  
14.3  
15.2  
16.2  
2065  
2078  
2113  
2152  
2192  
2237  
13.0  
13.6  
14.3  
15.0  
15.8  
16.7  
2195  
2209  
2222  
2257  
15.2  
15.9  
16.6  
17.4  
10400 2031  
11000 2148  
11600 2265  
12200 2382  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
650  
% 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
7
8
LWi  
A
RPM  
650  
% 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
7
8
LWo  
72  
A
66 75 70 65 63 64 51 43  
64 72 67 62 62 59 51 41  
64 70 65 60 60 59 51 41  
67 72 66 61 60 59 52 41  
70 79 73 71 69 73 60 52  
68 73 69 68 66 66 59 49  
70 71 69 66 65 65 59 50  
73 75 70 66 65 65 59 50  
75 80 89 82 79 76 79 63  
71 76 85 79 76 73 68 60  
75 76 80 76 74 71 66 61  
79 83 86 76 73 71 66 61  
81 85 93 89 88 84 87 78  
76 79 90 85 85 81 77 69  
82 82 87 83 82 78 74 70  
85 87 90 83 81 78 74 70  
85 88 94 95 94 91 91 89  
79 82 89 91 91 87 83 76  
85 87 88 88 87 84 80 77  
87 92 93 89 87 83 80 77  
70  
67  
65  
66  
77  
72  
71  
71  
86  
82  
79  
81  
94  
89  
87  
87  
99  
95  
91  
92  
74 79 68 69 66 64 55 45  
73 78 66 67 65 64 59 49  
73 77 65 65 64 63 59 48  
75 78 66 65 64 63 58 47  
77 80 74 75 72 72 64 54  
73 76 70 73 71 68 63 52  
74 76 70 71 69 68 63 53  
81 79 71 71 70 68 64 54  
82 84 85 86 82 77 78 67  
79 79 80 84 80 75 71 65  
81 82 80 81 78 74 70 65  
82 84 80 81 77 74 70 65  
87 89 92 92 91 86 86 80  
82 86 88 92 89 84 80 71  
86 90 89 88 86 81 79 72  
88 91 90 88 86 81 79 72  
92 94 96 98 96 92 91 90  
71  
70  
70  
78  
76  
74  
75  
88  
85  
83  
83  
95  
93  
91  
91  
900  
1300  
1800  
2265  
900  
1300  
1800  
2265  
101  
96  
95  
87  
88 92 93 92 89 85 78  
92 93 92 92 91 87 83 77  
93 94 93 92 91 87 83 78  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
31  
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QEI-24 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
15  
14  
12  
10  
8
60% WOV  
QEI-L  
QEI  
1450  
1655  
% WOV  
Maximum  
Fan RPM  
10  
7½  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
70% WOV  
Specification Data  
Maximum  
QEI-L  
5
3
215T  
254T  
Motor  
Frame Size  
80% WOV  
QEI  
Minimum Motor  
Starting hp  
Wheel Diameter  
1/3 hp  
30 in.  
QEI-L 400 lbs. 182 kg.  
QEI 470 lbs. 213 kg.  
.25 kW  
6
762 mm  
1½  
Approximate Weight  
(Less Motor & Drives)  
4
90% WOV  
¾
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  
2
0
0
2
4
6
8
10  
12  
14  
25  
16  
18  
30  
20  
Volume (cfm x 1000)  
0
5
10  
15  
20  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.28  
0.39  
0.53  
0.71  
0.93  
1.21  
1.54  
1.93  
2.39  
2.91  
3.52  
4.21  
RPM  
584  
BHP  
0.52  
0.65  
0.82  
1.03  
1.28  
1.59  
1.95  
2.37  
2.86  
3.43  
4.07  
4.80  
RPM  
748  
BHP  
1.11  
1.29  
1.50  
1.76  
2.06  
2.42  
2.84  
3.33  
3.88  
4.50  
5.21  
6.00  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
4600  
5600  
6600  
7600  
8600  
9600  
740  
901  
494  
563  
640  
786  
915  
951  
2.02  
2.29  
2.59  
2.94  
3.35  
3.82  
4.36  
4.96  
5.65  
6.42  
7.27  
1062  
1223  
1384  
1545  
636  
704  
831  
1060  
1097  
1142  
1190  
1247  
1304  
1369  
1435  
1502  
1574  
3.16  
3.52  
3.91  
4.36  
4.88  
5.46  
6.13  
6.87  
7.69  
8.60  
712  
772  
888  
996  
1191  
1231  
1276  
1324  
1380  
1436  
1499  
1564  
1631  
4.51  
4.96  
5.46  
6.02  
6.65  
7.35  
8.15  
9.03  
9.99  
1286  
1312  
1357  
1402  
1450  
1506  
1562  
1623  
5.56  
6.07  
6.63  
7.23  
7.90  
8.66  
9.49  
10.4  
790  
845  
948  
1047  
1103  
1165  
1231  
1298  
1369  
1442  
1516  
1400  
1431  
1475  
1521  
1570  
1626  
7.24  
7.85  
8.51  
9.22  
10.0  
10.9  
1481  
1507  
1545  
1589  
1635  
8.45  
9.12  
9.83  
10.6  
11.4  
869  
920  
1013  
1082  
1154  
1228  
1303  
1378  
1455  
10600 1706  
11600 1867  
12600 2028  
13600 2190  
14600 2351  
15600 2512  
949  
996  
1030  
1112  
1193  
1275  
1358  
1073  
1152  
1231  
1311  
1392  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
400  
1
2
3
4
5
6
7
8
LWi  
65  
A
RPM  
400  
% WOV  
1
2
3
4
5
6
7
8
LWo  
69  
A
100  
80  
69 69 64 61 60 58 50 36  
68 68 62 59 58 58 50 36  
66 67 60 58 57 58 50 37  
67 67 60 58 56 58 50 36  
72 76 71 68 65 65 55 43  
70 75 69 65 62 61 54 41  
69 75 66 63 60 61 53 41  
71 74 66 63 60 61 53 41  
76 81 80 76 73 73 62 55  
72 79 79 73 70 67 59 51  
72 75 76 69 67 65 57 51  
74 77 76 68 66 63 57 51  
79 91 85 83 81 79 77 63  
76 92 83 80 78 74 68 60  
76 85 79 76 74 70 65 61  
79 84 79 75 73 69 64 63  
83 89 100 95 91 89 87 76  
80 85 95 92 88 85 80 72  
81 84 88 88 84 81 76 71  
85 85 87 86 82 79 75 71  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
72 71 65 65 65 62 55 43  
72 70 63 64 64 62 55 43  
70 69 63 63 64 62 55 43  
72 69 62 63 64 62 56 43  
79 76 72 71 68 67 58 47  
77 75 71 70 68 66 58 47  
77 75 70 68 67 66 58 48  
77 75 70 67 66 65 59 48  
80 84 79 80 77 75 65 54  
76 81 76 78 75 70 63 52  
77 79 74 74 73 68 61 52  
79 80 74 73 72 68 61 52  
83 85 85 86 84 81 77 62  
82 83 81 83 81 76 69 59  
84 82 78 79 77 72 65 58  
87 84 79 79 76 71 65 59  
88 90 92 96 94 91 88 78  
64  
63  
63  
71  
69  
67  
67  
79  
76  
73  
73  
87  
83  
79  
78  
97  
94  
89  
88  
68  
68  
68  
73  
73  
72  
72  
82  
79  
77  
76  
89  
85  
81  
81  
98  
94  
91  
90  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
600  
850  
600  
850  
100  
80  
60  
50  
100  
80  
1150  
1655  
1150  
1655  
100  
80  
87  
86 91 92 90 87 81 71  
60  
50  
60  
50  
91 89 88 90 87 83 78 70  
94 91 89 89 86 81 76 71  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
32  
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QEI-24 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
20  
25  
15  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
2036  
Specification Data  
20  
15  
10  
5
70% WOV  
10  
Maximum Motor  
Frame Size  
284T  
.55 kW  
80% WOV  
7½  
Minimum Motor  
Starting hp  
3/4 hp  
30 in.  
5
2
Wheel Diameter  
762 mm  
249 kg.  
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 729)3  
Outlet Velocity (FPM) = CFM / 6.21  
Tip Speed (FPM) = Fan RPM x 7.85  
550 lbs.  
90% WOV  
0
% WOV = (CFM x 100) / (Fan RPM x 9.84)  
12  
Volume (cfm x 1000)  
14  
16  
18  
30  
0
2
4
6
8
10  
20  
Imperial data — Metric data  
0
5
10  
15  
20  
25  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
784  
BHP  
0.97  
1.18  
1.43  
1.71  
2.03  
2.40  
2.81  
3.26  
3.76  
4.32  
4.94  
5.61  
RPM  
875  
BHP  
1.56  
1.80  
2.08  
2.39  
2.74  
3.15  
3.60  
4.11  
4.67  
5.29  
5.97  
6.72  
RPM  
1051  
1090  
1133  
1184  
1236  
1289  
1345  
1404  
1464  
1524  
1585  
1648  
BHP  
2.96  
3.25  
3.57  
3.96  
4.39  
4.87  
5.39  
5.97  
6.59  
7.27  
8.00  
8.82  
RPM  
1222  
1248  
1281  
1318  
1360  
1405  
1457  
1509  
1562  
1617  
1675  
1734  
BHP  
4.64  
4.99  
5.36  
5.78  
6.25  
6.76  
7.36  
8.02  
8.72  
9.48  
10.3  
11.2  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
6800  
7500  
8200  
8900  
9600  
1075  
1186  
1297  
1408  
1518  
847  
928  
1405  
1420  
1453  
1486  
1523  
1566  
1609  
1660  
1712  
1765  
1818  
6.94  
7.37  
7.85  
8.36  
8.92  
9.54  
10.2  
11.0  
11.8  
12.7  
13.7  
911  
987  
1568  
1580  
1607  
1641  
1674  
1714  
1757  
1800  
1851  
1903  
9.57  
10.1  
10.7  
11.3  
11.9  
12.7  
13.5  
14.3  
15.3  
16.3  
976  
1046  
1107  
1169  
1233  
1298  
1363  
1428  
1494  
1561  
1717  
1728  
1751  
1784  
1817  
1853  
1895  
1938  
1982  
12.5  
13.1  
13.8  
14.5  
15.3  
16.1  
17.0  
18.0  
19.0  
1042  
1108  
1176  
1244  
1312  
1380  
1449  
1518  
1854  
1865  
1885  
1918  
1951  
1985  
2026  
15.7  
16.5  
17.2  
18.1  
19.0  
19.9  
20.9  
10300 1629  
11000 1740  
11700 1851  
12400 1962  
13100 2072  
13800 2183  
14500 2294  
1983  
1994  
2013  
19.3  
20.1  
21.0  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
600  
% 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
7
8
LWi  
A
RPM  
600  
% 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
7
8
LWo  
73  
A
69 76 71 66 65 64 52 43  
67 73 68 64 63 59 51 41  
66 71 66 61 61 59 51 41  
69 73 67 62 62 60 52 41  
73 81 75 73 71 74 61 53  
71 76 71 70 68 67 60 50  
72 74 71 68 67 67 61 51  
76 78 72 68 67 67 60 51  
76 82 88 82 79 77 77 61  
72 78 85 79 76 73 67 59  
76 77 80 76 74 71 66 60  
80 84 85 76 73 71 66 61  
83 87 95 90 89 86 87 78  
78 82 92 86 86 82 77 69  
84 84 89 84 83 79 75 71  
86 89 91 84 82 78 75 71  
86 89 96 96 95 91 92 90  
80 84 91 92 92 88 83 76  
87 88 89 89 88 84 80 77  
89 94 94 89 87 84 80 77  
71  
68  
66  
67  
78  
74  
73  
73  
86  
82  
79  
81  
95  
91  
88  
88  
100  
95  
92  
93  
76 79 70 70 67 65 56 45  
76 78 68 68 67 65 59 49  
75 77 67 67 66 64 59 49  
76 78 67 66 65 64 59 47  
79 82 76 77 74 74 65 55  
75 78 73 75 73 70 64 53  
76 79 72 73 71 69 65 54  
83 81 73 73 71 69 65 55  
83 84 86 86 82 78 77 65  
80 80 81 83 80 75 71 64  
81 82 81 81 78 74 70 65  
83 83 81 81 77 74 70 65  
88 90 94 94 92 87 87 81  
84 87 90 93 90 84 80 72  
88 91 91 89 87 82 79 72  
89 92 91 89 87 82 80 73  
94 95 97 99 97 93 92 91  
72  
71  
71  
80  
77  
76  
77  
87  
84  
83  
82  
96  
94  
92  
92  
102  
97  
95  
96  
850  
1150  
1650  
2036  
850  
1150  
1650  
2036  
88  
89 93 94 93 89 85 77  
93 94 93 93 91 87 83 77  
94 95 94 93 91 87 83 78  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
33  
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QEI-27 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
15  
14  
12  
10  
8
QEI-L  
QEI  
1280  
1505  
10  
Maximum  
Fan RPM  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
7½  
70% WOV  
Specification Data  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
215T  
256T  
5
3
80% WOV  
Minimum Motor  
Starting hp  
Wheel Diameter  
3/4 hp  
33 in.  
QEI-L 470 lbs. 214 kg.  
QEI 540 lbs. 245 kg.  
.55 kW  
6
838 mm  
90% WOV  
Approximate Weight  
(Less Motor & Drives)  
1½  
¾
4
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  
2
0
0
2
4
6
8
10  
12  
14  
16  
18  
20  
22  
24  
Volume (cfm x 1000)  
0
5
10  
15  
20  
25  
30  
35  
40  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.35  
0.48  
0.65  
0.87  
1.14  
1.47  
1.88  
2.35  
2.91  
3.55  
4.29  
5.13  
RPM  
541  
BHP  
0.63  
0.79  
0.98  
1.24  
1.54  
1.91  
2.35  
2.86  
3.46  
4.14  
4.92  
5.80  
RPM  
690  
BHP  
1.32  
1.53  
1.79  
2.10  
2.46  
2.88  
3.38  
3.96  
4.62  
5.37  
6.23  
7.18  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
5700  
6900  
8100  
9300  
755  
915  
459  
524  
594  
724  
843  
875  
2.40  
2.72  
3.08  
3.51  
3.99  
4.54  
5.15  
5.88  
6.70  
7.61  
8.62  
950  
3.36  
3.75  
4.17  
4.64  
5.19  
5.81  
6.50  
7.25  
8.10  
9.08  
10.2  
1074  
1233  
593  
651  
767  
976  
1070  
1097  
1131  
1172  
1218  
1269  
1322  
1379  
1436  
1497  
4.85  
5.34  
5.87  
6.46  
7.14  
7.90  
8.74  
9.64  
10.6  
11.8  
664  
716  
819  
916  
1009  
1050  
1096  
1148  
1202  
1259  
1318  
1383  
1449  
1182  
1208  
1246  
1287  
1332  
1384  
1436  
1492  
6.58  
7.17  
7.83  
8.55  
9.36  
10.3  
11.3  
12.3  
1260  
1287  
1314  
1355  
1396  
1442  
1494  
7.88  
8.55  
9.26  
10.0  
10.9  
11.9  
12.9  
10500 1392  
11700 1551  
12900 1710  
14100 1870  
15300 2029  
16500 2188  
17700 2347  
18900 2506  
737  
783  
875  
964  
1359  
1386  
1418  
1459  
1500  
9.98  
10.8  
11.6  
12.5  
13.5  
811  
853  
933  
1017  
1073  
1131  
1196  
1262  
1329  
1397  
886  
924  
999  
962  
997  
1065  
1133  
1203  
1275  
1346  
1038  
1114  
1191  
1268  
1070  
1144  
1219  
1294  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
400  
1
2
3
4
5
6
7
8
LWi  
65  
A
RPM  
400  
% WOV  
1
2
3
4
5
6
7
8
LWo  
68  
A
100  
80  
70 71 64 59 61 58 52 38  
65 68 62 58 57 58 52 40  
65 67 62 59 57 58 52 42  
67 68 61 58 57 58 53 42  
73 72 70 65 65 67 54 45  
70 70 67 63 61 61 54 44  
69 69 64 61 60 60 55 44  
74 70 64 61 60 60 54 44  
84 83 75 73 70 76 62 54  
82 80 73 70 69 66 60 53  
79 77 71 68 67 64 59 52  
79 78 71 67 66 63 59 52  
77 86 86 84 80 78 82 66  
73 84 83 80 77 74 70 63  
75 84 79 76 75 72 67 64  
79 82 82 76 74 71 66 64  
80 89 92 93 89 85 90 76  
78 87 88 90 86 83 79 72  
81 90 88 86 83 80 77 72  
85 89 89 86 82 80 76 73  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
70 70 65 67 62 60 55 44  
69 68 63 65 59 61 57 45  
69 69 63 64 59 61 57 45  
68 68 62 64 59 61 56 45  
78 73 71 71 67 67 56 46  
75 71 68 69 65 65 57 47  
74 70 67 67 65 64 57 47  
73 71 66 66 64 64 56 46  
85 82 77 79 74 75 64 55  
85 80 75 76 72 68 62 53  
83 79 74 75 71 67 61 53  
83 79 74 73 71 66 61 52  
85 89 86 89 84 81 82 66  
81 86 82 86 81 77 72 63  
84 87 81 83 78 75 69 63  
87 88 83 82 78 74 68 64  
88 91 93 97 93 89 89 79  
64  
63  
64  
71  
67  
66  
66  
79  
74  
72  
71  
88  
83  
80  
80  
95  
91  
89  
88  
67  
67  
66  
73  
71  
70  
70  
81  
78  
76  
75  
90  
86  
84  
84  
99  
95  
92  
93  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
550  
750  
550  
750  
100  
80  
60  
50  
100  
80  
1100  
1505  
1100  
1505  
100  
80  
86  
89 90 94 90 87 83 73  
60  
50  
60  
50  
91 89 88 91 87 84 81 72  
93 92 90 92 87 83 80 72  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
34  
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QEI-27 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
30  
25  
20  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
1847  
15  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
286T  
1.1 kW  
10  
80% WOV  
Minimum Motor  
Starting hp  
11⁄2 hp  
33 in.  
7½  
Wheel Diameter  
838 mm  
304 kg.  
5
2
Approximate Weight  
(Less Motor & Drives)  
Maximum Bhp = (Fan RPM / 630)3  
Outlet Velocity (FPM) = CFM / 7.54  
Tip Speed (FPM) = Fan RPM x 8.64  
670 lbs.  
90% WOV  
0
% WOV = (CFM x 100) / (Fan RPM x 12.9)  
12  
14  
16  
18  
20  
22  
24  
0
2
4
6
8
10  
Volume (cfm x 1000)  
Imperial data — Metric data  
40  
0
10  
20  
30  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
727  
BHP  
1.21  
1.45  
1.73  
2.05  
2.41  
2.82  
3.28  
3.78  
4.35  
4.97  
5.65  
6.39  
RPM  
807  
BHP  
1.89  
2.16  
2.49  
2.87  
3.28  
3.75  
4.26  
4.82  
5.44  
6.12  
6.86  
7.67  
RPM  
967  
BHP  
3.57  
3.91  
4.28  
4.71  
5.19  
5.71  
6.30  
6.97  
7.69  
8.48  
9.33  
10.2  
RPM  
1119  
1147  
1175  
1207  
1243  
1280  
1325  
1371  
1417  
1464  
1515  
1566  
BHP  
5.59  
5.98  
6.41  
6.89  
7.42  
7.99  
8.65  
9.36  
10.1  
11.0  
11.9  
12.9  
RPM  
1265  
1281  
1303  
1331  
1359  
1392  
1428  
1464  
1506  
1551  
1597  
1644  
BHP  
7.80  
8.29  
8.81  
9.34  
9.91  
10.6  
11.3  
12.0  
12.8  
13.8  
14.7  
15.8  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
8300  
9100  
9900  
1100  
1206  
1312  
782  
854  
1002  
1038  
1082  
1128  
1174  
1223  
1275  
1327  
1380  
1434  
1488  
1410  
1427  
1444  
1472  
1500  
1529  
1563  
1599  
1635  
1676  
1721  
10.8  
11.4  
12.0  
12.7  
13.4  
14.1  
14.9  
15.8  
16.7  
17.8  
18.9  
839  
906  
1543  
1560  
1576  
1602  
1630  
1658  
1688  
1724  
1760  
1797  
14.1  
14.8  
15.6  
16.4  
17.2  
18.0  
18.9  
20.0  
21.0  
22.2  
10700 1419  
11500 1525  
12300 1631  
13100 1737  
13900 1843  
14700 1949  
15500 2055  
16300 2161  
17100 2267  
896  
959  
1667  
1684  
1700  
1723  
1752  
1780  
1809  
1843  
17.8  
18.6  
19.5  
20.4  
21.3  
22.3  
23.3  
24.5  
953  
1012  
1067  
1123  
1179  
1236  
1293  
1351  
1409  
1783  
1800  
1816  
1839  
21.8  
22.7  
23.8  
24.8  
1011  
1070  
1130  
1189  
1249  
1309  
1370  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
550  
% 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
7
8
LWi  
A
RPM  
550  
% 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
7
8
LWo  
73  
A
81 72 67 64 68 62 50 43  
79 71 64 62 62 58 50 44  
76 68 62 61 62 59 51 45  
74 68 63 61 62 59 51 45  
73 80 75 72 71 77 58 53  
65 73 71 68 68 62 56 49  
67 70 70 65 67 62 56 50  
68 71 69 65 67 62 56 51  
78 90 84 83 81 83 78 65  
74 89 80 79 78 73 67 61  
74 84 76 75 77 72 67 62  
78 83 77 74 76 71 67 63  
83 86 95 91 89 86 89 75  
78 80 91 87 85 80 76 70  
80 80 87 83 82 79 75 71  
83 83 86 83 81 78 75 72  
85 90 97 97 96 92 94 84  
82 83 91 92 92 87 84 77  
89 86 90 89 89 85 82 78  
89 89 91 89 88 84 81 78  
71  
67  
66  
66  
79  
72  
71  
70  
88  
82  
80  
80  
95  
89  
87  
86  
101  
96  
93  
92  
83 74 70 71 68 64 55 45  
82 72 67 70 66 62 56 45  
79 69 65 68 65 62 56 45  
79 70 65 67 65 62 56 45  
79 81 78 79 74 75 62 55  
76 76 75 77 72 67 61 53  
75 73 72 74 71 66 61 52  
77 75 71 73 70 66 61 53  
85 92 88 89 84 84 78 67  
81 84 84 86 82 77 69 62  
83 82 81 83 79 75 68 63  
84 84 81 82 79 74 68 64  
90 91 96 96 92 89 90 77  
85 86 91 94 89 85 79 72  
89 88 88 91 87 82 77 72  
91 90 90 90 86 82 77 73  
96 95 100 101 99 94 94 86  
71  
70  
70  
81  
77  
75  
75  
91  
87  
84  
84  
98  
95  
92  
91  
750  
1100  
1500  
1847  
750  
1100  
1500  
1847  
103  
100  
97  
91  
90 98 98 96 91 86 79  
97 94 94 95 93 88 83 79  
97 96 96 95 92 88 83 79  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
35  
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QEI-30 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
20  
15  
14  
12  
10  
8
60% WOV  
QEI-L  
QEI  
1200  
1360  
Maximum  
Fan RPM  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
10  
70% WOV  
Specification Data  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
256T  
284T  
80% WOV  
5
Minimum Motor  
Starting hp  
Wheel Diameter  
1 hp  
36.5 in.  
QEI-L 630 lbs. 286 kg.  
QEI 850 lbs. 386 kg.  
.75 kW  
6
927 mm  
90% WOV  
Approximate Weight  
(Less Motor & Drives)  
2
1
4
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  
2
0
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30  
Volume (cfm x 1000)  
0
10  
20  
30  
40  
50  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.42  
0.58  
0.79  
1.07  
1.41  
1.83  
2.34  
2.94  
3.65  
4.47  
5.41  
6.49  
RPM  
487  
BHP  
0.76  
0.96  
1.20  
1.52  
1.9  
RPM  
622  
BHP  
1.60  
1.87  
2.19  
2.58  
3.03  
3.55  
4.19  
4.92  
5.76  
6.72  
7.81  
9.03  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
6900  
8400  
9900  
748  
910  
412  
472  
536  
602  
669  
737  
806  
876  
947  
1018  
1088  
1160  
536  
654  
761  
791  
2.93  
3.32  
3.77  
4.31  
4.92  
5.61  
6.39  
7.31  
8.35  
9.51  
10.8  
858  
882  
4.10  
4.58  
5.10  
5.70  
6.39  
7.17  
8.04  
8.99  
10.1  
11.3  
12.7  
1073  
588  
693  
968  
992  
5.93  
6.54  
7.21  
7.95  
8.80  
9.77  
10.8  
12.0  
13.2  
11400 1235  
12900 1398  
14400 1561  
15900 1723  
17400 1886  
18900 2048  
20400 2211  
21900 2374  
23400 2536  
648  
742  
829  
912  
1069  
1093  
1128  
1167  
1209  
1257  
1306  
1358  
8.06  
8.80  
9.63  
10.5  
11.6  
12.7  
14.0  
15.3  
1140  
1164  
1190  
1228  
1266  
1310  
1358  
9.65  
10.5  
11.4  
12.4  
13.4  
14.7  
16.0  
710  
793  
874  
950  
1024  
1062  
1104  
1152  
1202  
1254  
1307  
1230  
1254  
1285  
1323  
12.2  
13.2  
14.3  
15.4  
775  
2.37  
2.92  
3.57  
4.33  
5.20  
6.19  
7.32  
847  
923  
993  
841  
908  
975  
1042  
1092  
1145  
1200  
1260  
1321  
908  
969  
1028  
1088  
1150  
1212  
1275  
975  
1032  
1097  
1163  
1230  
1044  
1113  
1183  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
350  
1
2
3
4
5
6
7
8
LWi  
65  
A
RPM  
350  
% WOV  
1
2
3
4
5
6
7
8
LWo  
68  
A
100  
80  
70 70 63 60 61 57 49 36  
66 67 61 58 57 57 50 38  
66 66 61 58 57 57 51 40  
67 67 61 58 57 57 51 40  
74 73 70 66 66 67 54 44  
71 71 68 64 62 61 54 43  
70 70 65 62 61 60 54 44  
74 71 65 62 61 60 54 43  
87 84 77 74 73 76 62 55  
84 81 74 72 70 67 61 53  
81 78 72 69 68 65 60 53  
81 79 73 68 67 64 60 53  
78 86 85 83 79 79 79 62  
75 84 82 79 77 73 68 61  
77 83 78 76 74 71 67 63  
79 82 81 76 73 70 66 63  
83 91 93 93 89 87 88 75  
80 89 90 90 86 83 79 72  
84 91 89 86 84 81 77 73  
87 91 89 86 83 80 76 73  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
70 69 66 66 62 59 53 42  
69 68 64 64 60 60 55 43  
69 68 63 63 59 60 55 43  
68 67 63 63 59 60 54 43  
78 74 72 72 68 67 56 46  
76 71 69 70 66 65 56 46  
75 71 68 68 66 64 56 46  
74 71 67 67 65 64 56 46  
87 83 79 80 75 76 64 55  
87 81 76 78 73 69 63 54  
85 80 75 76 72 68 62 53  
85 80 75 75 72 67 61 53  
86 89 86 88 84 81 79 63  
82 85 83 85 80 76 70 61  
84 86 82 82 77 73 68 62  
87 87 83 81 77 72 67 63  
89 92 95 97 93 90 89 78  
63  
63  
63  
72  
68  
67  
66  
80  
75  
73  
73  
86  
82  
79  
79  
96  
92  
89  
89  
66  
66  
66  
74  
72  
71  
70  
82  
79  
77  
77  
89  
85  
83  
83  
99  
95  
93  
93  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
500  
700  
500  
700  
100  
80  
60  
50  
100  
80  
950  
950  
100  
80  
87  
90 91 94 90 87 82 72  
1360  
1360  
60  
50  
60  
50  
92 91 89 91 87 85 81 72  
94 93 91 92 87 84 80 71  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
36  
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QEI-30 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
30  
20  
15  
60% WOV  
25  
% WOV  
Maximum Fan RPM  
1670  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Specification Data  
70% WOV  
20  
15  
10  
5
Maximum Motor  
Frame Size  
324T  
80% WOV  
10  
Minimum Motor  
Starting hp  
11⁄2 hp  
36.5 in.  
1.1 kW  
7½  
Wheel Diameter  
927 mm  
Approximate Weight  
(Less Motor & Drives)  
5
3
90% WOV  
1000 lbs. 454 kg.  
Maximum Bhp = (Fan RPM / 533)3  
Outlet Velocity (FPM) = CFM / 9.31  
Tip Speed (FPM) = Fan RPM x 9.56  
% WOV = (CFM x 100) / (Fan RPM x 17.4)  
Imperial data — Metric data  
0
20  
25  
30  
0
5
10  
15  
Volume (cfm x 1000)  
40  
50  
0
10  
20  
30  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
650  
BHP  
1.43  
1.76  
2.15  
2.60  
3.11  
3.70  
4.37  
5.11  
5.94  
6.87  
7.90  
9.03  
RPM  
723  
BHP  
2.26  
2.63  
3.09  
3.61  
4.20  
4.86  
5.60  
6.43  
7.34  
8.35  
9.46  
10.7  
RPM  
870  
BHP  
4.31  
4.77  
5.28  
5.88  
6.56  
7.31  
8.18  
9.15  
10.2  
11.4  
12.6  
14.0  
RPM  
1009  
1036  
1065  
1098  
1135  
1176  
1222  
1269  
1317  
1367  
1420  
1473  
BHP  
6.76  
7.30  
7.89  
8.56  
9.31  
10.1  
11.1  
12.1  
13.2  
14.5  
15.9  
17.4  
RPM  
1141  
1158  
1180  
1209  
1237  
1273  
1310  
1349  
1395  
1442  
1489  
1537  
BHP  
9.50  
10.1  
10.8  
11.6  
12.4  
13.3  
14.3  
15.4  
16.6  
18.0  
19.4  
20.9  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
10000 1084  
11100 1203  
12200 1323  
13300 1442  
14400 1561  
15500 1681  
16600 1800  
17700 1919  
18800 2039  
19900 2158  
21000 2277  
22100 2396  
706  
771  
905  
1274  
1291  
1311  
1339  
1368  
1399  
1436  
1473  
1513  
1559  
1606  
13.1  
14.0  
14.9  
15.8  
16.7  
17.8  
19.0  
20.3  
21.7  
23.2  
24.9  
763  
824  
942  
1397  
1413  
1431  
1460  
1489  
1517  
1553  
1590  
1627  
17.3  
18.3  
19.4  
20.5  
21.6  
22.8  
24.2  
25.7  
27.2  
821  
877  
987  
1510  
1527  
1545  
1573  
1602  
1631  
1665  
21.9  
23.1  
24.4  
25.6  
26.9  
28.3  
29.9  
880  
931  
1034  
1082  
1133  
1186  
1240  
1294  
1349  
1406  
1617  
1634  
1652  
27.0  
28.4  
29.8  
939  
988  
999  
1045  
1103  
1161  
1219  
1278  
1338  
1060  
1121  
1182  
1243  
1304  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
500  
% 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
7
8
LWi  
A
RPM  
500  
% 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
7
8
LWo  
73  
A
83 72 68 66 68 61 50 43  
81 71 65 63 63 58 50 44  
78 68 63 62 62 59 51 45  
76 68 63 62 62 59 51 46  
75 81 77 74 73 76 59 54  
68 74 72 70 69 63 56 50  
69 72 71 67 68 63 57 51  
70 72 70 67 68 63 57 52  
80 91 83 82 81 82 75 63  
76 90 79 78 77 71 66 59  
76 85 76 76 76 71 66 61  
79 84 77 75 75 70 66 62  
84 88 95 92 89 87 88 74  
79 82 91 87 85 80 76 69  
81 82 87 84 82 79 75 71  
84 85 87 83 82 79 75 72  
87 91 99 97 97 92 95 84  
84 84 93 93 93 87 84 77  
91 86 92 90 90 85 82 78  
91 90 92 89 89 85 82 79  
71  
67  
66  
66  
80  
73  
72  
71  
87  
82  
80  
79  
95  
90  
87  
87  
102  
96  
94  
93  
84 75 71 72 69 64 54 45  
83 72 68 70 66 62 55 44  
80 70 66 68 66 62 55 44  
80 71 66 68 65 62 56 45  
80 82 80 80 76 75 63 55  
77 77 76 78 73 68 62 54  
76 74 73 75 72 67 61 53  
78 76 73 74 71 67 61 54  
86 93 88 88 84 83 76 64  
82 85 84 85 81 75 68 61  
83 83 81 82 78 73 67 61  
84 85 81 81 78 73 67 63  
91 92 97 97 93 90 89 76  
86 87 92 94 90 85 79 72  
90 89 90 91 87 82 77 72  
92 91 91 90 86 82 77 73  
98 96 102 102 99 95 95 85  
72  
70  
70  
82  
79  
76  
76  
90  
86  
83  
83  
98  
95  
92  
91  
700  
950  
700  
950  
1350  
1670  
1350  
1670  
104  
101  
98  
92  
91 100 99 97 91 86 79  
98 94 95 96 94 89 83 79  
99 97 97 95 92 88 83 79  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
37  
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QEI-33 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
14  
12  
10  
8
60% WOV  
15  
QEI-L  
QEI  
1000  
1234  
25  
% WOV  
Maximum  
Fan RPM  
20  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
70% WOV  
10  
Specification Data  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
256T  
286T  
80% WOV  
Minimum Motor  
Starting hp  
Wheel Diameter  
5
11⁄2 hp  
1.1 kW  
6
40.25 in.  
QEI-L 730 lbs. 332 kg.  
QEI 990 lbs. 449 kg.  
1022 mm  
90% WOV  
Approximate Weight  
(Less Motor & Drives)  
4
2
1
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  
2
0
0
4
8
12  
20  
16  
20  
24  
28  
32  
Volume (cfm x 1000)  
0
10  
30  
40  
50  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.52  
0.72  
0.99  
1.35  
1.79  
2.32  
2.97  
3.74  
4.64  
5.69  
6.89  
8.25  
RPM  
444  
489  
539  
595  
653  
714  
775  
837  
900  
965  
1029  
1094  
BHP  
0.93  
1.17  
1.48  
1.88  
2.37  
2.96  
3.67  
4.50  
5.46  
6.56  
7.83  
9.25  
RPM  
562  
BHP  
1.93  
2.27  
2.67  
3.13  
3.69  
4.37  
5.17  
6.08  
7.16  
8.38  
9.75  
11.3  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
8400  
745  
905  
379  
435  
494  
556  
618  
682  
747  
812  
878  
944  
1010  
1076  
10200  
593  
687  
717  
3.52  
4.02  
4.60  
5.22  
5.97  
6.83  
7.83  
8.99  
10.3  
11.8  
13.4  
12000 1064  
13800 1224  
15600 1384  
17400 1543  
19200 1703  
21000 1863  
22800 2023  
24600 2182  
26400 2342  
28200 2502  
631  
795  
827  
5.48  
6.17  
6.93  
7.74  
8.67  
9.75  
10.9  
12.4  
13.9  
15.6  
675  
753  
893  
927  
7.81  
8.71  
9.66  
10.7  
11.8  
13.1  
14.5  
16.2  
966  
988  
9.68  
10.6  
11.6  
12.8  
14.0  
15.3  
16.9  
723  
793  
862  
1050  
1077  
1112  
1149  
1189  
1231  
12.6  
13.7  
15.0  
16.3  
17.8  
19.3  
1113  
1129  
1163  
1198  
14.7  
15.8  
17.2  
18.7  
776  
840  
902  
963  
1022  
1058  
1098  
1140  
1188  
832  
888  
947  
1003  
1045  
1093  
1141  
1192  
889  
940  
994  
948  
996  
1042  
1097  
1153  
1209  
1009  
1070  
1132  
1053  
1111  
1171  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
300  
1
2
3
4
5
6
7
8
LWi  
64  
A
RPM  
300  
% WOV  
1
2
3
4
5
6
7
8
LWo  
67  
A
100  
80  
68 68 62 60 61 48 39 32  
66 66 60 60 60 49 40 34  
62 65 59 60 60 49 39 32  
65 66 60 60 60 49 39 33  
74 76 71 70 70 59 50 45  
71 75 68 70 66 58 51 44  
69 72 66 70 65 59 52 45  
69 72 66 70 65 58 52 44  
83 81 78 74 73 74 59 54  
79 80 75 72 72 66 60 53  
78 79 73 70 71 66 60 54  
78 79 73 70 71 66 60 54  
84 93 88 83 79 84 70 62  
82 92 85 80 78 74 67 61  
81 90 80 76 75 73 68 63  
81 88 80 75 75 73 68 63  
88 98 95 94 90 88 90 75  
86 96 93 91 88 84 78 72  
86 95 88 87 84 82 77 73  
86 95 88 87 84 82 77 73  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
71 67 64 64 64 52 45 38  
68 68 63 63 63 52 45 38  
67 68 62 63 63 52 46 39  
68 69 62 63 64 53 46 40  
80 76 73 72 71 62 54 46  
77 76 70 71 68 61 54 46  
77 76 68 70 67 60 54 46  
78 76 69 70 68 60 54 46  
88 82 79 80 76 74 61 54  
86 82 77 78 75 68 61 53  
85 82 75 75 73 67 61 53  
84 82 75 75 73 67 61 54  
85 90 87 88 83 83 74 65  
84 90 84 85 80 76 70 62  
84 88 82 83 78 75 69 64  
86 89 82 82 78 75 69 64  
91 95 97 99 94 91 91 78  
62  
62  
62  
73  
70  
70  
70  
79  
76  
75  
75  
88  
84  
81  
81  
97  
93  
90  
90  
66  
66  
66  
74  
72  
71  
72  
81  
79  
78  
77  
90  
86  
84  
84  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
450  
600  
450  
600  
100  
80  
60  
50  
100  
80  
850  
850  
100  
80  
100  
97  
94  
89  
95 94 96 91 87 82 74  
1234  
1234  
60  
50  
60  
50  
92 93 92 93 88 85 80 74  
94 94 92 93 88 85 80 75  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
38  
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QEI-33 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50% WOV  
60% WOV  
40  
30  
25  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
1522  
20  
15  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
324T  
1.5 kW  
80% WOV  
Minimum Motor  
Starting hp  
2 hp  
10  
Wheel Diameter  
40.25 in. 1022 mm  
1200 lbs. 544 kg.  
Approximate Weight  
(Less Motor & Drives)  
5
3
90% WOV  
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 23.5)  
Imperial data — Metric data  
0
16  
Volume (cfm x 1000)  
20  
24  
36  
0
4
8
12  
20  
28  
32  
50  
60  
0
10  
30  
40  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
599  
BHP  
1.76  
2.17  
2.64  
3.20  
3.84  
4.57  
5.40  
6.34  
7.38  
8.55  
9.85  
11.3  
RPM  
668  
BHP  
2.84  
3.32  
3.87  
4.50  
5.22  
6.03  
6.95  
7.98  
9.12  
10.4  
11.8  
13.3  
RPM  
797  
BHP  
5.47  
6.06  
6.71  
7.47  
8.30  
9.26  
10.3  
11.5  
12.8  
14.2  
15.8  
17.5  
RPM  
923  
BHP  
8.58  
9.29  
10.0  
10.9  
11.9  
12.9  
14.1  
15.4  
16.8  
18.4  
20.1  
21.9  
RPM  
1043  
1059  
1080  
1107  
1136  
1174  
1212  
1253  
1296  
1340  
1384  
1432  
BHP  
11.9  
12.8  
13.8  
14.8  
15.8  
17.0  
18.3  
19.7  
21.2  
22.9  
24.7  
26.7  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
12500 1109  
13900 1233  
15300 1357  
16700 1481  
18100 1606  
19500 1730  
20900 1854  
22300 1978  
23700 2102  
25100 2227  
26500 2351  
27900 2475  
652  
714  
833  
948  
1165  
1181  
1200  
1227  
1254  
1288  
1326  
1365  
1407  
1450  
1493  
16.6  
17.8  
18.9  
20.1  
21.4  
22.8  
24.3  
25.9  
27.7  
29.7  
31.7  
707  
762  
872  
975  
1277  
1293  
1311  
1338  
1365  
1395  
1433  
1471  
1510  
21.9  
23.3  
24.7  
26.1  
27.6  
29.2  
31.0  
32.9  
34.9  
762  
812  
915  
1011  
1050  
1092  
1134  
1178  
1224  
1272  
1320  
1370  
1381  
1398  
1415  
1442  
1469  
1496  
27.8  
29.4  
31.1  
32.7  
34.4  
36.2  
818  
862  
958  
1480  
1496  
1514  
34.3  
36.1  
38.0  
874  
916  
1004  
1053  
1101  
1151  
1201  
1254  
1308  
931  
971  
988  
1026  
1081  
1137  
1193  
1249  
1046  
1103  
1161  
1219  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
450  
% 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
7
8
LWi  
A
RPM  
450  
% 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
7
8
LWo  
76  
A
83 74 69 67 71 61 50 44  
80 72 66 66 67 58 48 40  
78 70 63 64 66 57 48 40  
75 69 62 64 66 56 48 40  
83 83 77 75 74 78 59 53  
79 80 73 72 73 65 56 49  
76 77 70 70 72 64 56 49  
76 77 70 69 72 63 55 49  
79 93 84 85 81 87 73 65  
75 90 82 82 79 75 67 60  
74 87 77 79 77 74 67 61  
79 88 78 77 76 72 65 61  
85 92 97 94 90 89 92 76  
79 89 94 91 87 83 79 70  
81 86 91 87 85 81 77 70  
83 87 89 86 84 81 76 71  
90 94 101 100 96 94 98 86  
85 89 97 98 94 90 87 79  
87 88 93 94 90 87 84 78  
90 91 93 93 90 87 83 79  
73  
69  
69  
68  
81  
76  
75  
74  
90  
84  
82  
81  
98  
93  
90  
89  
104  
99  
96  
95  
87 77 73 73 74 64 54 47  
85 77 71 72 72 61 52 45  
84 76 69 70 72 60 52 45  
83 77 68 68 72 59 52 45  
82 82 79 80 76 76 62 54  
82 82 77 79 75 68 60 51  
82 81 75 76 75 67 59 52  
82 83 74 75 74 65 58 52  
85 89 88 90 83 86 75 66  
82 87 85 88 81 77 70 61  
82 85 82 84 79 75 68 62  
85 87 82 83 79 74 67 62  
89 92 95 99 93 90 92 78  
87 89 93 97 91 87 82 73  
88 89 90 94 88 84 79 72  
91 92 92 93 87 83 78 73  
94 96 102 104 99 96 98 87  
75  
74  
74  
82  
80  
78  
77  
91  
88  
85  
84  
600  
850  
600  
850  
100  
97  
94  
1200  
1522  
1200  
1522  
93  
106  
103  
100  
100  
92  
93 98 102 97 93 89 81  
94 95 95 99 94 90 86 79  
96 97 98 99 94 90 85 80  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
39  
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QEI-36 Class I & QEI-L  
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
30  
25  
20  
14  
12  
10  
8
QEI-L  
QEI  
920  
1116  
Maximum  
Fan RPM  
% WOV  
60% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
15  
70% WOV  
Specification Data  
Maximum  
Motor  
Frame Size  
QEI-L  
QEI  
256T  
286T  
10  
80% WOV  
Minimum Motor  
Starting hp  
Wheel Diameter  
11⁄2 hp  
1.1 kW  
5
6
44.5 in.  
1130 mm  
90% WOV  
3
QEI-L 900 lbs. 409 kg.  
QEI 1200 lbs. 544 kg.  
Approximate Weight  
(Less Motor & Drives)  
4
1½  
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  
2
0
0
5
10  
15  
20  
25  
30  
35  
40  
Volume (cfm x 1000)  
0
10  
20  
30  
40  
50  
60  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.63  
0.88  
1.22  
1.65  
2.19  
2.85  
3.64  
4.59  
5.69  
6.97  
8.44  
10.1  
RPM  
402  
443  
488  
539  
592  
646  
702  
758  
815  
873  
932  
991  
BHP  
1.14  
1.44  
1.82  
2.31  
2.90  
3.63  
4.50  
5.51  
6.69  
8.05  
9.59  
11.3  
RPM  
508  
537  
571  
611  
654  
702  
753  
805  
859  
913  
969  
1024  
BHP  
2.36  
2.79  
3.27  
3.83  
4.52  
5.35  
6.33  
7.45  
8.76  
10.3  
12.0  
13.8  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
10300  
12500  
746  
906  
343  
394  
448  
503  
560  
618  
677  
736  
795  
854  
914  
974  
622  
649  
681  
718  
760  
803  
851  
902  
953  
1005  
1060  
4.31  
4.93  
5.63  
6.39  
7.31  
8.36  
9.59  
11.0  
12.6  
14.4  
16.4  
14700 1065  
16900 1225  
19100 1385  
21300 1544  
23500 1704  
25700 1863  
27900 2023  
30100 2182  
32300 2342  
34500 2501  
720  
748  
780  
817  
857  
899  
943  
993  
1043  
1094  
6.71  
7.55  
8.49  
9.48  
10.6  
11.9  
13.4  
15.1  
17.0  
19.1  
808  
839  
9.57  
10.7  
11.8  
13.1  
14.4  
16.0  
17.8  
19.8  
874  
894  
11.8  
12.9  
14.3  
15.7  
17.1  
18.8  
20.7  
950  
975  
15.4  
16.7  
18.3  
20.0  
21.7  
23.6  
1007  
1022  
1052  
1084  
18.0  
19.3  
21.0  
22.9  
872  
925  
908  
958  
1006  
1040  
1076  
1114  
946  
994  
989  
1032  
1075  
1033  
1079  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
275  
1
2
3
4
5
6
7
8
LWi  
64  
A
RPM  
275  
% WOV  
1
2
3
4
5
6
7
8
LWo  
67  
A
100  
80  
70 68 63 62 61 48 39 32  
68 67 61 61 59 49 40 34  
64 65 60 61 60 49 39 32  
66 66 61 61 59 49 39 33  
75 76 71 70 69 58 49 45  
72 74 69 70 65 57 50 43  
70 72 67 70 65 58 51 44  
70 71 67 69 65 58 51 43  
85 82 79 75 75 73 60 54  
81 80 76 73 72 66 60 53  
80 80 74 72 72 66 61 54  
80 80 74 72 72 66 61 55  
87 95 89 84 81 84 71 63  
85 93 86 81 79 75 68 62  
84 91 82 77 77 74 69 64  
84 89 81 77 77 74 69 64  
91 100 96 94 91 89 89 74  
89 98 94 91 88 84 78 72  
88 96 89 87 84 82 78 73  
88 96 89 87 84 82 78 73  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
72 68 65 65 64 53 45 38  
69 69 64 65 63 53 45 38  
69 69 63 64 63 53 46 40  
69 69 63 64 64 53 47 40  
80 76 73 72 70 61 53 45  
78 75 71 71 67 60 53 45  
77 75 69 70 67 60 53 46  
78 75 70 70 67 59 53 45  
90 83 80 80 77 74 62 54  
88 82 78 79 75 68 61 53  
86 82 76 76 74 68 61 53  
86 82 76 76 74 67 61 54  
88 91 89 90 85 84 75 66  
86 91 86 87 82 77 71 64  
86 89 84 84 80 76 71 65  
88 90 84 83 80 76 71 65  
92 97 98 99 95 92 90 77  
63  
63  
63  
72  
70  
70  
70  
79  
76  
76  
75  
89  
85  
82  
82  
97  
93  
90  
90  
66  
66  
66  
74  
72  
71  
71  
82  
80  
78  
78  
91  
87  
85  
85  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
400  
550  
400  
550  
100  
80  
60  
50  
100  
80  
800  
800  
100  
80  
100  
97  
94  
91  
96 95 97 92 87 82 74  
1116  
1116  
60  
50  
60  
50  
93 94 93 93 89 85 80 74  
95 95 93 93 89 85 80 75  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
40  
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QEI-36 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
50  
50% WOV  
60% WOV  
40  
30  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
1377  
Specification Data  
20  
15  
10  
5
70% WOV  
20  
15  
Maximum Motor  
Frame Size  
326T  
2.2 kW  
80% WOV  
Minimum Motor  
Starting hp  
3 hp  
10  
5
Wheel Diameter  
44.5 in. 1130 mm  
1400 lbs. 635 kg.  
Approximate Weight  
(Less Motor & Drives)  
90% WOV  
Maximum Bhp = (Fan RPM / 381)3  
Outlet Velocity (FPM) = CFM / 13.79  
Tip Speed (FPM) = Fan RPM x 11.7  
% WOV = (CFM x 100) / (Fan RPM x 31.7)  
Imperial data — Metric data  
0
20  
25  
30  
40  
45  
0
5
10  
15  
35  
60  
Volume (cfm x 1000)  
0
20  
40  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
534  
579  
625  
671  
718  
766  
814  
862  
910  
959  
1008  
1057  
BHP  
2.08  
2.53  
3.05  
3.66  
4.35  
5.14  
6.02  
7.02  
8.13  
9.37  
10.7  
12.2  
RPM  
598  
636  
677  
718  
760  
805  
851  
897  
943  
990  
1038  
1085  
BHP  
3.39  
3.91  
4.52  
5.21  
5.99  
6.87  
7.86  
8.96  
10.2  
11.5  
13.0  
14.6  
RPM  
716  
BHP  
6.58  
7.23  
7.96  
8.78  
9.71  
10.7  
11.9  
13.8  
14.6  
16.1  
17.7  
19.5  
RPM  
832  
BHP  
10.3  
11.2  
12.0  
13.0  
14.0  
15.1  
16.4  
17.8  
19.3  
21.0  
22.9  
24.8  
RPM  
941  
BHP  
14.4  
15.4  
16.5  
17.6  
18.8  
20.1  
21.5  
22.9  
24.6  
26.4  
28.4  
30.4  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
15000 1088  
16600 1204  
18200 1320  
19800 1436  
21400 1552  
23000 1669  
24600 1785  
26200 1901  
27800 2017  
29400 2133  
31000 2249  
32600 2365  
745  
852  
955  
1050  
1064  
1078  
1099  
1122  
1146  
1178  
1210  
1243  
1280  
1316  
20.0  
21.3  
22.6  
24.0  
25.4  
26.9  
28.5  
30.3  
32.2  
34.3  
36.5  
778  
875  
970  
1151  
1165  
1178  
1198  
1221  
1244  
1272  
1305  
1337  
1371  
26.3  
27.8  
29.4  
31.0  
32.7  
34.5  
36.4  
38.4  
40.6  
42.9  
814  
902  
993  
1244  
1258  
1272  
1291  
1314  
1337  
1362  
33.3  
35.1  
37.0  
38.8  
40.8  
42.8  
44.9  
850  
935  
1016  
1045  
1077  
1110  
1146  
1182  
1219  
1257  
1332  
1346  
1360  
41.0  
43.0  
45.2  
888  
968  
928  
1005  
1041  
1078  
1118  
1159  
1200  
969  
1010  
1052  
1095  
1140  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
400  
% 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
7
8
LWi  
A
RPM  
400  
% 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
7
8
LWo  
76  
74  
73  
73  
83  
80  
79  
78  
92  
89  
86  
86  
100  
98  
94  
A
84 73 69 69 70 60 50 43  
81 71 67 66 66 57 47 39  
78 69 64 65 65 56 47 39  
76 68 63 65 65 55 47 40  
85 84 78 76 76 77 60 54  
82 80 74 73 73 65 57 49  
78 77 71 71 72 64 56 50  
79 78 71 71 72 63 55 50  
82 94 86 86 83 87 74 66  
79 92 84 84 80 76 68 61  
78 89 79 80 78 75 68 62  
82 90 80 79 78 73 67 62  
87 94 98 95 91 91 91 75  
82 91 95 92 88 84 79 71  
83 88 91 88 85 82 77 71  
85 88 90 87 84 81 77 72  
92 95 103 101 97 94 100 84  
87 90 98 98 94 90 88 79  
89 89 94 95 91 88 84 78  
92 91 94 94 90 87 84 79  
73  
69  
68  
67  
81  
76  
75  
74  
91  
86  
83  
82  
98  
94  
91  
90  
105  
100  
96  
96  
87 76 73 74 73 62 53 47  
85 77 72 72 71 60 52 44  
84 76 69 71 71 59 51 44  
84 76 68 70 70 58 51 45  
84 83 80 81 77 76 62 55  
84 83 78 80 75 68 60 52  
83 82 76 77 75 67 59 52  
84 83 75 76 74 66 59 53  
87 91 90 91 85 86 76 67  
84 89 87 89 83 78 71 62  
84 86 84 86 81 76 69 63  
87 89 84 85 80 75 68 63  
91 94 97 99 94 92 92 77  
88 91 94 98 91 87 82 73  
90 90 91 94 89 85 79 73  
93 93 93 94 88 84 78 73  
96 97 103 105 99 96 100 86  
550  
800  
550  
800  
1100  
1377  
1100  
1377  
94  
107  
104  
100  
100  
93  
93 100 104 97 93 89 80  
96 96 97 100 94 91 86 79  
98 98 99 100 94 90 85 80  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
41  
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QEI-40 Class I  
6
5
4
3
2
1
0
Performance Data  
Maximum Fan RPM  
Specification Data  
RPM  
BHP  
40  
30  
25  
14  
12  
10  
8
60% WOV  
% WOV  
1013  
324T  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
70% WOV  
15  
10  
Maximum Motor  
Frame Size  
80% WOV  
Minimum Motor  
5 hp  
3.7 kW  
1245 mm  
Starting hp  
Wheel Diameter  
49 in.  
6
Approximate Weight  
(Less Motor & Drives)  
5
2
1500 lbs. 680 kg.  
90% WOV  
4
Maximum Bhp = (Fan RPM / 324)3  
Outlet Velocity (FPM) = CFM / 16.77  
Tip Speed (FPM) = Fan RPM x 12.8  
% WOV = (CFM x 100) / (Fan RPM x 48.1)  
Imperial data — Metric data  
2
0
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
Volume (cfm x 1000)  
0
10  
20  
30  
40  
50  
60  
70  
80  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.77  
1.08  
1.49  
2.03  
2.70  
3.51  
4.50  
5.67  
7.05  
8.64  
10.5  
12.6  
RPM  
365  
403  
445  
491  
540  
590  
641  
693  
746  
799  
853  
907  
BHP  
1.39  
1.75  
2.22  
2.82  
3.56  
4.47  
5.54  
6.81  
8.27  
9.96  
11.9  
14.1  
RPM  
462  
488  
520  
557  
596  
641  
687  
735  
785  
835  
886  
937  
BHP  
2.86  
3.39  
3.98  
4.68  
5.53  
6.56  
7.77  
9.17  
10.8  
12.7  
14.8  
17.1  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
12500  
15200  
745  
906  
312  
359  
408  
459  
511  
565  
619  
673  
727  
782  
837  
892  
565  
590  
620  
654  
693  
733  
777  
824  
871  
919  
969  
5.23  
6.00  
6.86  
7.81  
8.94  
10.2  
11.8  
13.5  
15.5  
17.7  
20.3  
17900 1067  
20600 1228  
23300 1389  
26000 1550  
28700 1711  
31400 1872  
34100 2033  
36800 2194  
39500 2355  
42200 2516  
654  
681  
710  
744  
781  
820  
861  
907  
953  
1000  
8.16  
9.20  
10.4  
11.6  
13.0  
14.6  
16.4  
18.6  
21.0  
23.6  
735  
764  
794  
827  
864  
903  
942  
986  
11.7  
13.0  
14.4  
16.0  
17.7  
19.7  
21.8  
24.3  
795  
813  
842  
872  
906  
941  
981  
14.4  
15.7  
17.4  
19.1  
21.0  
23.0  
25.3  
863  
887  
916  
947  
981  
18.7  
20.4  
22.4  
24.4  
26.6  
915  
930  
958  
986  
21.9  
23.5  
25.7  
28.0  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
250  
1
2
3
4
5
6
7
8
LWi  
64  
A
RPM  
250  
% WOV  
1
2
3
4
5
6
7
8
LWo  
67  
A
100  
80  
71 68 64 63 60 48 39 32  
69 67 62 62 59 49 40 34  
65 66 61 62 59 48 39 32  
68 66 62 62 59 48 39 33  
76 75 71 70 66 56 49 44  
73 73 69 69 63 56 49 42  
71 71 68 69 64 57 50 42  
71 70 68 69 63 57 50 42  
86 82 79 76 76 72 60 54  
82 81 76 74 72 66 60 53  
81 80 75 73 72 66 61 54  
81 80 74 73 72 66 61 55  
90 94 88 84 82 82 69 62  
88 92 85 81 78 74 67 61  
86 89 81 77 76 73 68 63  
86 88 80 77 76 73 68 63  
94 101 96 94 91 90 87 72  
91 99 94 92 88 84 78 72  
90 97 90 88 85 82 78 73  
90 97 90 88 85 82 78 73  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
72 69 66 66 63 52 45 38  
70 69 65 65 62 53 45 38  
70 69 64 65 63 53 46 40  
70 69 64 65 63 53 46 40  
79 76 73 72 68 60 51 44  
77 74 71 70 66 59 51 44  
77 74 69 69 65 59 52 44  
78 74 70 70 65 58 51 44  
90 83 81 81 77 73 61 54  
88 82 79 79 75 68 61 53  
87 82 77 77 74 68 61 53  
86 82 77 76 73 67 61 54  
89 91 89 89 85 82 73 65  
88 90 86 86 81 76 69 62  
87 88 84 83 79 75 69 64  
88 89 84 83 79 75 70 64  
94 98 99 99 95 93 89 76  
63  
63  
63  
71  
69  
69  
69  
80  
77  
76  
76  
88  
84  
82  
81  
97  
94  
91  
91  
66  
66  
67  
73  
71  
70  
71  
82  
80  
78  
78  
90  
87  
85  
84  
101  
97  
94  
95  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
350  
500  
350  
500  
100  
80  
60  
50  
100  
80  
700  
700  
100  
80  
92  
97 96 97 92 87 81 73  
1013  
1013  
60  
50  
60  
50  
94 95 94 93 89 85 80 74  
95 96 94 93 89 85 80 75  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
42  
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QEI-40 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
60  
50  
40  
50% WOV  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
1251  
30  
20  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
364T  
5.5 kW  
1245 mm  
80% WOV  
Minimum Motor  
Starting hp  
71⁄2 hp  
Wheel Diameter  
49 in.  
10  
5
Approximate Weight  
(Less Motor & Drives)  
1900 lbs. 862 kg.  
90% WOV  
Maximum Bhp = (Fan RPM / 324)3  
Outlet Velocity (FPM) = CFM / 16.77  
Tip Speed (FPM) = Fan RPM x 12.8  
% WOV = (CFM x 100) / (Fan RPM x 42.4)  
Imperial data — Metric data  
0
25  
30  
35  
40  
45  
55  
0
5
10  
15  
20  
50  
Volume (cfm x 1000)  
80  
0
20  
40  
60  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
481  
523  
566  
609  
653  
698  
743  
788  
833  
879  
925  
971  
BHP  
2.48  
3.03  
3.68  
4.43  
5.30  
6.29  
7.41  
8.67  
10.1  
11.7  
13.4  
15.3  
RPM  
540  
575  
613  
652  
691  
733  
776  
820  
863  
907  
951  
996  
BHP  
4.06  
4.70  
5.45  
6.31  
7.29  
8.40  
9.65  
11.0  
12.6  
14.3  
16.2  
18.2  
RPM  
649  
675  
705  
739  
773  
808  
846  
884  
923  
963  
1003  
1046  
BHP  
7.91  
8.71  
9.61  
10.7  
11.8  
13.1  
14.6  
16.2  
17.9  
19.8  
21.9  
24.2  
RPM  
754  
BHP  
12.4  
13.5  
14.5  
15.7  
17.0  
18.4  
20.1  
21.8  
23.7  
25.9  
28.2  
30.7  
RPM  
853  
BHP  
17.3  
18.6  
20.0  
21.3  
22.8  
24.4  
26.2  
28.1  
30.2  
32.5  
34.9  
37.6  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
18000 1077  
20000 1197  
22000 1317  
24000 1437  
26000 1556  
28000 1676  
30000 1796  
32000 1916  
34000 2035  
36000 2155  
38000 2275  
40000 2395  
772  
866  
953  
966  
24.1  
25.7  
27.4  
29.1  
30.9  
32.7  
34.9  
37.1  
39.5  
42.2  
45.0  
794  
880  
1045  
1058  
1071  
1089  
1111  
1132  
1160  
1190  
1221  
31.8  
33.7  
35.7  
37.8  
39.8  
42.0  
44.5  
47.1  
49.8  
819  
902  
979  
1130  
1143  
1156  
1174  
1195  
1217  
1242  
40.4  
42.6  
44.9  
47.3  
49.7  
52.2  
55.0  
849  
923  
999  
1210  
1223  
1236  
49.8  
52.3  
55.0  
881  
950  
1021  
1043  
1073  
1104  
1135  
1169  
1203  
915  
981  
949  
1011  
1046  
1080  
1114  
1150  
984  
1022  
1060  
1099  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
350  
% 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
7
8
LWi  
A
RPM  
350  
% 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
7
8
LWo  
75  
A
82 73 69 69 68 58 49 42  
79 70 67 67 64 55 46 38  
77 68 64 66 63 54 46 38  
75 67 63 65 63 54 46 38  
87 84 78 77 77 75 60 54  
83 80 75 74 73 65 56 49  
80 77 72 73 72 64 56 50  
81 77 72 72 72 63 55 50  
85 93 86 85 84 85 73 64  
82 90 84 83 80 75 67 60  
80 87 80 80 78 74 67 61  
84 88 80 79 77 72 66 62  
89 96 98 95 92 92 90 74  
85 93 95 92 88 84 79 70  
85 90 92 89 86 82 77 71  
87 89 90 88 85 81 77 72  
93 97 104 101 97 96 99 83  
89 92 99 99 94 90 87 78  
90 91 95 95 91 88 84 78  
93 93 95 94 90 88 84 79  
72  
68  
67  
66  
81  
76  
75  
75  
90  
85  
82  
82  
99  
94  
91  
90  
105  
100  
97  
96  
85 76 73 74 71 61 52 46  
83 75 72 72 68 58 50 42  
83 74 70 71 68 57 50 43  
82 74 68 70 68 57 50 43  
85 84 81 81 78 75 62 54  
85 83 80 80 75 68 60 51  
85 82 77 78 75 67 59 52  
85 82 76 77 74 66 59 53  
88 91 90 90 86 84 74 65  
85 89 87 88 82 77 69 61  
85 86 84 85 80 75 68 62  
87 88 84 84 79 74 67 62  
92 95 98 99 94 93 91 76  
89 92 96 98 92 88 81 73  
91 91 93 94 89 85 79 73  
94 93 94 94 88 84 78 74  
97 99 104 105 100 97 99 85  
73  
72  
72  
83  
81  
79  
78  
92  
88  
85  
85  
500  
700  
500  
700  
101  
98  
95  
1000  
1251  
1000  
1251  
94  
107  
104  
101  
100  
94  
95 101 104 97 94 89 80  
97 97 98 100 94 91 86 79  
99 99 100 100 94 90 85 80  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
43  
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QEI-44 Class I  
6
5
4
3
2
1
0
Performance Data  
Maximum Fan RPM  
Specification Data  
RPM  
BHP  
40  
14  
12  
10  
8
30  
60% WOV  
% WOV  
915  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
20  
70% WOV  
Maximum Motor  
Frame Size  
326T  
80% WOV  
Minimum Motor  
71⁄2 hp  
5.5 kW  
Starting hp  
10  
Wheel Diameter  
54.25 in. 1378 mm  
2000 lbs. 907 kg.  
6
Approximate Weight  
(Less Motor & Drives)  
90% WOV  
5
2
4
Maximum Bhp = (Fan RPM / 273)3  
Outlet Velocity (FPM) = CFM / 20.49  
Tip Speed (FPM) = Fan RPM x 14.2  
% WOV = (CFM x 100) / (Fan RPM x 65.3)  
Imperial data — Metric data  
2
0
0
5
10  
15  
20  
25  
30  
35  
40  
45  
50  
55  
60  
Volume (cfm x 1000)  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
0.93  
1.30  
1.81  
2.45  
3.26  
4.25  
5.44  
6.86  
8.53  
10.5  
12.7  
15.2  
RPM  
329  
362  
400  
442  
485  
531  
577  
623  
670  
719  
767  
816  
BHP  
1.69  
2.12  
2.69  
3.42  
4.32  
5.42  
6.72  
8.25  
10.0  
12.1  
14.4  
17.0  
RPM  
417  
440  
468  
501  
537  
577  
619  
661  
706  
751  
797  
843  
BHP  
3.49  
4.12  
4.84  
5.70  
6.72  
7.97  
9.44  
11.1  
13.1  
15.4  
17.9  
20.8  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
15200  
18500  
741  
902  
280  
322  
367  
413  
459  
507  
556  
605  
654  
703  
753  
802  
510  
532  
559  
589  
624  
660  
700  
741  
784  
827  
872  
6.39  
7.31  
8.36  
9.51  
10.9  
12.5  
14.3  
16.5  
18.9  
21.6  
24.6  
21800 1063  
25100 1224  
28400 1386  
31700 1547  
35000 1708  
38300 1869  
41600 2030  
44900 2191  
48200 2352  
51500 2513  
590  
613  
640  
670  
704  
739  
775  
816  
858  
901  
9.96  
11.2  
12.6  
14.1  
15.8  
17.8  
20.0  
22.6  
25.5  
28.7  
663  
689  
715  
745  
777  
813  
849  
888  
14.2  
15.9  
17.6  
19.5  
21.5  
23.9  
26.6  
29.6  
717  
733  
759  
786  
816  
847  
883  
17.6  
19.2  
21.2  
23.3  
25.6  
28.0  
30.9  
779  
800  
826  
853  
884  
22.8  
24.9  
27.3  
29.8  
32.4  
826  
838  
864  
889  
26.8  
28.7  
31.3  
34.1  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
225  
1
2
3
4
5
6
7
8
LWi  
64  
A
RPM  
225  
% WOV  
1
2
3
4
5
6
7
8
LWo  
67  
A
100  
80  
71 68 64 64 59 47 39 32  
70 67 63 63 58 48 40 34  
66 65 62 63 58 48 39 32  
68 66 63 63 58 47 39 33  
77 76 72 72 67 56 50 45  
75 74 71 70 64 57 49 42  
73 72 70 70 64 58 51 43  
73 71 70 70 64 57 50 42  
86 83 79 77 76 71 60 54  
83 81 77 75 72 66 60 53  
82 80 75 74 72 66 60 54  
82 79 75 74 72 66 61 54  
92 95 89 85 84 82 70 63  
91 93 86 82 79 74 68 62  
89 90 82 79 78 74 69 64  
88 88 81 79 78 74 69 64  
96 101 97 95 92 91 86 71  
94 99 95 92 88 84 78 71  
93 96 90 88 86 82 78 74  
93 96 90 88 86 82 78 74  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
72 69 67 67 62 52 45 38  
71 69 66 66 62 52 45 38  
71 68 65 66 62 53 46 39  
71 69 65 66 62 53 46 40  
80 77 74 74 69 60 52 45  
79 75 73 71 66 59 52 44  
78 74 71 71 66 59 52 45  
79 75 71 71 66 59 52 45  
90 84 82 81 78 72 61 53  
88 83 80 80 75 68 60 52  
87 82 78 77 74 68 61 53  
87 82 77 77 73 67 61 54  
91 92 91 90 86 83 74 65  
90 91 88 87 82 77 70 63  
89 89 86 84 80 76 70 65  
90 90 85 84 80 76 71 65  
95 99 100 100 95 93 88 75  
63  
63  
63  
72  
70  
70  
70  
80  
77  
76  
76  
89  
85  
83  
82  
98  
94  
91  
91  
67  
66  
67  
74  
72  
71  
72  
82  
80  
79  
78  
91  
88  
86  
86  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
325  
450  
650  
915  
325  
450  
650  
915  
100  
80  
60  
50  
100  
80  
100  
80  
101  
98  
95  
94  
98 97 97 92 88 81 73  
60  
50  
60  
50  
95 96 95 93 89 85 80 74  
96 97 95 93 89 85 80 75  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
44  
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QEI-44 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
75  
60  
40  
30  
% WOV  
Maximum Fan RPM  
1129  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
60% WOV  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
365T  
7.5 kW  
80% WOV  
Minimum Motor  
Starting hp  
20  
10 hp  
Wheel Diameter  
54.25 in. 1378 mm  
2300 lbs. 1043 kg.  
Approximate Weight  
(Less Motor & Drives)  
10  
5
90% WOV  
Maximum Bhp = (Fan RPM / 274)3  
Outlet Velocity (FPM) = CFM / 20.49  
Tip Speed (FPM) = Fan RPM x 14.2  
% WOV = (CFM x 100) / (Fan RPM x 57.5)  
Imperial data — Metric data  
0
30  
40  
45  
55  
60  
65  
0
5
10  
15  
20  
25  
35  
50  
Volume (cfm x 1000)  
100  
0
20  
40  
60  
80  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
434  
472  
512  
552  
592  
633  
675  
716  
758  
800  
842  
885  
BHP  
3.02  
3.71  
4.52  
5.46  
6.55  
7.80  
9.21  
10.8  
12.6  
14.6  
16.8  
19.2  
RPM  
487  
519  
554  
590  
626  
665  
705  
745  
785  
825  
866  
907  
BHP  
4.95  
5.75  
6.70  
7.78  
9.00  
10.4  
12.0  
13.7  
15.7  
17.8  
20.2  
22.8  
RPM  
585  
609  
637  
668  
700  
732  
767  
803  
839  
875  
913  
952  
BHP  
9.67  
10.7  
11.8  
13.1  
14.5  
16.2  
18.0  
20.0  
22.3  
24.7  
27.4  
30.3  
RPM  
681  
698  
717  
741  
769  
798  
829  
861  
894  
928  
963  
999  
BHP  
15.2  
16.5  
17.8  
19.3  
20.9  
22.8  
24.8  
27.0  
29.4  
32.2  
35.1  
38.3  
RPM  
770  
782  
795  
815  
835  
860  
888  
917  
949  
980  
1012  
1046  
BHP  
21.2  
22.8  
24.5  
26.2  
28.0  
30.1  
32.3  
34.7  
37.4  
40.2  
43.3  
46.7  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
22000 1074  
24500 1196  
27000 1319  
29500 1441  
32000 1563  
34500 1685  
37000 1807  
39500 1929  
42000 2051  
44500 2173  
47000 2296  
49500 2418  
861  
873  
29.6  
31.6  
33.7  
35.8  
38.0  
40.4  
43.0  
45.8  
48.9  
52.3  
55.8  
944  
956  
39.0  
41.4  
44.0  
46.5  
49.1  
51.8  
54.9  
58.2  
61.7  
885  
1021  
1033  
1045  
1062  
1082  
1102  
1126  
49.6  
52.4  
55.3  
58.2  
61.3  
64.4  
67.9  
903  
968  
1094  
1106  
1118  
61.1  
64.4  
67.7  
923  
985  
945  
1005  
1025  
1051  
1079  
1107  
972  
1000  
1029  
1061  
1093  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
325  
% 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
7
8
LWi  
A
RPM  
325  
% 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
7
8
LWo  
76  
A
82 74 70 71 69 58 49 43  
79 71 68 68 64 55 46 38  
77 69 66 67 64 55 46 38  
75 68 65 67 63 54 46 39  
89 83 79 78 78 73 60 53  
85 80 75 75 72 64 56 49  
82 77 73 74 72 64 56 50  
82 77 72 73 71 62 55 50  
88 93 88 86 86 85 73 65  
85 91 85 84 81 75 68 61  
83 87 81 81 79 74 68 62  
86 88 81 80 78 73 67 63  
91 98 99 95 92 94 88 72  
87 95 96 92 88 84 78 70  
86 91 92 89 86 82 77 71  
88 90 91 88 85 82 77 72  
95 99 104 102 98 97 97 82  
90 95 100 99 95 91 87 78  
91 92 96 95 92 88 84 78  
94 94 96 95 91 88 84 80  
73  
69  
68  
67  
82  
77  
75  
75  
91  
86  
83  
83  
99  
94  
91  
91  
105  
100  
97  
97  
85 77 75 75 71 61 53 46  
84 76 73 74 69 59 51 43  
83 75 71 73 68 58 51 44  
83 75 70 72 68 58 51 44  
87 84 82 81 79 73 62 54  
86 83 81 80 75 67 59 51  
86 81 78 79 74 66 59 52  
86 82 77 77 73 65 59 52  
90 92 92 91 87 85 75 66  
87 90 89 89 83 78 70 61  
86 87 86 86 81 76 69 62  
89 89 86 85 80 74 68 63  
93 96 100 99 95 94 89 75  
90 93 98 97 92 88 81 72  
92 91 94 94 89 85 79 73  
94 93 95 94 89 84 79 74  
98 101 105 105 100 99 98 84  
74  
73  
73  
83  
81  
79  
78  
93  
89  
86  
86  
450  
650  
450  
650  
101  
98  
95  
900  
900  
95  
107  
104  
101  
101  
95  
97 103 104 98 94 88 80  
1129  
1129  
98 98 99 100 95 91 86 79  
99 100 101 100 94 90 85 80  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
45  
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QEI-49 Class I  
6
5
4
3
2
1
0
Performance Data  
Maximum Fan RPM  
Specification Data  
RPM  
BHP  
14  
12  
10  
8
50  
40  
% WOV  
828  
60% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
25  
15  
70% WOV  
Maximum Motor  
Frame Size  
364T  
80% WOV  
Minimum Motor  
10 hp  
7.5 kW  
1524 mm  
2400 lbs. 1089 kg.  
Starting hp  
Wheel Diameter  
60 in.  
6
Approximate Weight  
(Less Motor & Drives)  
7½  
3
90% WOV  
4
Maximum Bhp = (Fan RPM / 231)3  
Outlet Velocity (FPM) = CFM / 24.85  
Tip Speed (FPM) = Fan RPM x 15.7  
% WOV = (CFM x 100) / (Fan RPM x 88.4)  
Imperial data — Metric data  
2
0
0
10  
20  
30  
40  
50  
60  
70  
80  
Volume (cfm x 1000)  
0
20  
40  
60  
80  
100  
120  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
1.08  
1.52  
2.10  
2.85  
3.79  
4.95  
6.34  
8.01  
9.96  
12.2  
14.8  
17.8  
RPM  
293  
323  
356  
393  
432  
472  
513  
554  
597  
640  
683  
727  
BHP  
2.00  
2.51  
3.16  
4.02  
5.06  
6.35  
7.88  
9.67  
11.8  
14.2  
16.9  
20.0  
RPM  
375  
394  
418  
448  
479  
514  
552  
590  
630  
670  
711  
752  
BHP  
4.18  
4.91  
5.77  
6.77  
7.98  
9.43  
11.2  
13.2  
15.5  
18.1  
21.1  
24.5  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
18000  
22000  
724  
885  
248  
285  
325  
366  
407  
450  
494  
538  
582  
626  
670  
714  
459  
477  
500  
527  
558  
590  
625  
662  
700  
739  
779  
7.67  
8.73  
10.0  
11.4  
13.0  
14.8  
17.0  
19.5  
22.4  
25.5  
29.2  
26000 1046  
30000 1207  
34000 1368  
38000 1529  
42000 1690  
46000 1851  
50000 2012  
54000 2173  
58000 2334  
62000 2494  
532  
551  
574  
601  
629  
661  
694  
730  
767  
805  
12.0  
13.4  
15.1  
16.9  
18.9  
21.3  
23.9  
26.9  
30.3  
34.1  
597  
618  
641  
668  
696  
728  
760  
794  
17.1  
19.0  
21.1  
23.3  
25.8  
28.6  
31.7  
35.2  
647  
659  
682  
705  
732  
759  
792  
823  
21.2  
23.1  
25.5  
28.0  
30.7  
33.6  
36.9  
40.6  
703  
719  
742  
766  
793  
820  
27.6  
29.9  
32.8  
35.8  
38.9  
42.3  
755  
776  
799  
824  
34.6  
37.7  
41.0  
44.4  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
200  
1
2
3
4
5
6
7
8
LWi  
64  
A
RPM  
200  
% WOV  
1
2
3
4
5
6
7
8
LWo  
67  
A
100  
80  
72 68 64 64 57 46 38 31  
70 66 63 63 57 47 40 34  
67 65 63 63 57 47 38 31  
69 66 63 63 56 46 39 33  
79 76 73 73 67 57 50 46  
77 74 73 71 65 57 50 43  
75 72 72 71 65 58 51 44  
74 72 71 70 65 58 51 43  
88 84 81 79 78 71 61 55  
85 82 78 77 74 67 61 54  
84 81 76 76 73 68 62 55  
84 81 76 76 73 68 62 56  
94 94 89 84 85 80 69 62  
93 92 86 82 79 74 67 61  
91 88 81 79 78 74 68 63  
90 87 81 79 77 73 68 64  
98 101 98 95 92 93 85 70  
96 99 96 93 89 84 78 71  
95 96 91 89 86 83 78 74  
95 96 91 89 86 83 78 74  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
72 69 67 67 60 51 44 37  
72 69 67 67 60 52 44 37  
71 68 66 67 60 52 45 39  
71 68 66 67 61 52 46 39  
81 78 76 75 69 61 53 45  
80 76 74 72 67 60 52 45  
79 75 72 72 67 60 53 45  
80 75 73 72 67 60 53 45  
91 85 84 82 80 73 62 55  
89 84 82 81 76 69 61 53  
89 83 80 79 75 69 62 54  
88 83 79 79 75 69 62 55  
92 92 91 89 87 81 73 64  
92 90 88 86 82 76 69 62  
90 88 86 84 80 76 70 64  
91 89 86 83 80 75 70 65  
97 100 102 100 96 94 87 74  
63  
63  
63  
73  
71  
71  
71  
82  
78  
78  
78  
89  
85  
82  
82  
99  
94  
91  
91  
67  
66  
67  
75  
73  
72  
73  
84  
82  
80  
80  
91  
87  
86  
85  
102  
98  
95  
95  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
300  
425  
575  
828  
300  
425  
575  
828  
100  
80  
60  
50  
100  
80  
100  
80  
96  
98 99 97 92 88 81 73  
60  
50  
60  
50  
96 96 96 94 90 86 80 74  
97 97 96 94 90 85 81 75  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
46  
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QEI-49 Class II  
10  
9
8
7
6
5
4
3
2
1
0
Performance Data  
RPM  
BHP  
100  
75  
50  
40  
60% WOV  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
1020  
50% WOV  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
405T  
30  
20  
80% WOV  
Minimum Motor  
Starting hp  
15 hp  
60 in.  
11 kW  
1524 mm  
Wheel Diameter  
Approximate Weight  
(Less Motor & Drives)  
3100 lbs. 1406 kg.  
90% WOV  
10  
Maximum Bhp = (Fan RPM / 231)3  
Outlet Velocity (FPM) = CFM / 24.85  
Tip Speed (FPM) = Fan RPM x 15.7  
% WOV = (CFM x 100) / (Fan RPM x 77.8)  
Imperial data — Metric data  
0
60  
70  
80  
0
10  
20  
30  
40  
50  
Volume (cfm x 1000)  
100  
120  
0
20  
40  
60  
80  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
393  
427  
462  
498  
534  
570  
607  
644  
681  
718  
755  
793  
BHP  
3.72  
4.55  
5.52  
6.65  
7.95  
9.43  
11.1  
13.0  
15.1  
17.5  
20.1  
23.0  
RPM  
441  
470  
501  
533  
565  
599  
634  
670  
705  
741  
777  
814  
BHP  
6.09  
7.05  
8.18  
9.48  
10.9  
12.6  
14.5  
16.6  
18.9  
21.4  
24.2  
27.3  
RPM  
530  
551  
576  
604  
631  
660  
691  
722  
754  
786  
820  
854  
BHP  
11.9  
13.1  
14.4  
16.0  
17.7  
19.6  
21.8  
24.2  
26.9  
29.8  
32.9  
36.4  
RPM  
616  
631  
648  
669  
694  
719  
748  
775  
804  
835  
866  
898  
BHP  
18.7  
20.2  
21.8  
23.5  
25.5  
27.7  
30.1  
32.7  
35.6  
38.8  
42.3  
46.1  
RPM  
697  
707  
719  
736  
754  
776  
801  
826  
854  
882  
910  
940  
BHP  
26.0  
28.0  
30.0  
32.0  
34.2  
36.6  
39.2  
42.1  
45.3  
48.7  
52.3  
56.4  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
27000 1078  
30000 1198  
33000 1317  
36000 1437  
39000 1557  
42000 1677  
45000 1797  
48000 1916  
51000 2036  
54000 2156  
57000 2276  
60000 2396  
778  
789  
800  
816  
834  
852  
876  
901  
927  
955  
983  
36.2  
38.6  
41.1  
43.6  
46.3  
49.1  
52.3  
55.6  
59.2  
63.2  
67.5  
853  
864  
874  
890  
907  
925  
947  
972  
997  
47.7  
50.6  
53.6  
56.6  
59.7  
63.0  
66.7  
70.6  
74.7  
923  
933  
944  
959  
976  
994  
1014  
60.5  
63.9  
67.4  
70.9  
74.5  
78.3  
82.4  
988  
999  
74.6  
78.5  
82.5  
1010  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
300  
% 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
7
8
LWi  
A
RPM  
300  
% 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
7
8
LWo  
77  
75  
74  
74  
85  
82  
81  
80  
93  
89  
86  
86  
102  
99  
96  
A
82 75 72 73 69 58 50 44  
79 72 69 70 65 56 47 39  
77 69 67 69 64 55 47 39  
76 68 66 68 63 55 47 39  
91 85 81 79 81 73 61 55  
87 81 77 77 74 65 57 50  
84 78 75 76 73 65 57 51  
84 78 74 75 72 63 57 51  
91 92 88 86 88 83 72 64  
88 89 86 84 80 74 67 60  
86 86 82 81 79 74 67 61  
88 87 81 80 77 72 66 62  
93 100 99 96 93 95 87 71  
89 97 97 93 89 85 78 70  
88 93 93 90 87 83 77 71  
90 92 92 89 86 82 78 73  
96 102 105 102 98 99 96 80  
91 97 101 99 95 91 86 77  
92 94 97 96 92 89 84 78  
94 95 97 95 91 88 84 80  
73  
70  
69  
68  
83  
78  
77  
76  
91  
86  
83  
82  
100  
95  
92  
91  
105  
101  
97  
97  
85 78 76 77 71 61 53 47  
84 77 75 75 69 59 51 44  
83 75 73 75 68 59 51 44  
83 75 71 74 68 58 51 45  
89 85 84 83 81 74 63 55  
88 84 83 82 76 69 60 52  
88 83 80 80 75 68 60 53  
88 83 79 79 74 67 60 54  
91 93 93 90 88 83 74 64  
89 90 90 88 83 77 69 60  
87 87 87 85 81 75 68 62  
90 88 86 84 80 74 68 63  
95 98 101 99 95 96 89 74  
92 95 99 98 93 88 81 72  
93 92 96 95 90 85 79 73  
96 94 97 94 89 84 79 74  
99 103 106 105 101 100 97 83  
425  
575  
425  
575  
825  
825  
95  
107  
104  
101  
101  
96  
99 104 104 98 94 88 79  
1020  
1020  
98 99 101 100 95 91 86 79  
100 101 102 100 95 90 85 80  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
47  
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QEI-54 Class I  
6
5
4
3
2
1
0
Performance Data  
Maximum Fan RPM  
Specification Data  
RPM  
50  
BHP  
14  
12  
10  
8
60  
40  
% WOV  
752  
60% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
30  
20  
70% WOV  
Maximum Motor  
Frame Size  
365T  
80% WOV  
Minimum Motor  
10 hp  
7.5 kW  
1676 mm  
2900 lbs. 1315 kg.  
Starting hp  
Wheel Diameter  
66 in.  
6
10  
5
Approximate Weight  
(Less Motor & Drives)  
90% WOV  
4
Maximum Bhp = (Fan RPM / 197)3  
Outlet Velocity (FPM) = CFM / 30.46  
Tip Speed (FPM) = Fan RPM x 17.3  
% WOV = (CFM x 100) / (Fan RPM x 118)  
Imperial data — Metric data  
2
0
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
Volume (cfm x 1000)  
0
2
4
6
8
10  
12  
14  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
1.43  
1.99  
2.73  
3.68  
4.87  
6.32  
8.06  
10.1  
12.5  
15.3  
18.5  
22.2  
RPM  
272  
300  
331  
365  
400  
437  
474  
511  
550  
589  
628  
667  
BHP  
2.56  
3.21  
4.05  
5.13  
6.44  
8.05  
9.94  
12.2  
14.7  
17.7  
21.1  
24.9  
RPM  
343  
363  
386  
414  
442  
475  
508  
543  
579  
616  
653  
690  
BHP  
5.24  
6.20  
7.25  
8.50  
10.0  
11.8  
14.0  
16.4  
19.3  
22.6  
26.2  
30.4  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
23000  
27800  
755  
912  
234  
268  
304  
341  
379  
418  
457  
497  
536  
576  
616  
656  
420  
439  
460  
485  
514  
542  
574  
608  
643  
678  
714  
9.54  
10.9  
12.5  
14.1  
16.2  
18.4  
21.1  
24.2  
27.7  
31.6  
36.0  
32600 1070  
37400 1227  
42200 1385  
47000 1543  
51800 1700  
56600 1858  
61400 2015  
66200 2173  
71000 2330  
75800 2488  
486  
505  
527  
551  
578  
607  
636  
669  
703  
737  
14.8  
16.7  
18.8  
20.9  
23.4  
26.3  
29.5  
33.2  
37.4  
42.0  
536  
546  
567  
588  
612  
638  
667  
696  
727  
19.4  
21.2  
23.6  
26.1  
28.8  
31.8  
35.3  
39.1  
43.4  
590  
603  
624  
646  
670  
695  
725  
26.2  
28.5  
31.5  
34.5  
37.8  
41.3  
45.4  
641  
658  
679  
701  
725  
751  
33.9  
36.9  
40.4  
44.0  
47.8  
52.0  
679  
689  
710  
730  
39.7  
42.6  
46.4  
50.4  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
200  
1
2
3
4
5
6
7
8
LWi  
67  
A
RPM  
200  
% WOV  
1
2
3
4
5
6
7
8
LWo  
70  
A
100  
80  
75 71 67 67 60 49 41 34  
73 69 66 66 60 50 43 37  
71 68 66 66 60 49 41 34  
72 69 66 66 59 49 42 36  
80 77 74 74 66 57 51 47  
78 74 74 71 65 57 50 43  
76 72 73 71 65 58 51 44  
76 72 73 71 65 58 51 43  
87 84 80 79 79 69 60 55  
85 82 78 77 73 66 60 53  
84 80 76 76 73 67 61 54  
84 80 76 76 72 67 61 55  
96 94 89 85 87 79 69 62  
95 92 86 83 79 74 67 61  
93 88 82 80 78 74 69 64  
91 87 81 80 78 74 69 64  
100 101 98 96 93 94 84 69  
98 99 96 93 89 84 78 71  
97 95 92 89 87 83 79 74  
97 95 92 89 87 83 79 74  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
75 72 70 70 63 54 47 40  
74 71 69 70 63 54 47 40  
74 71 69 70 63 55 48 42  
74 71 69 70 64 55 49 42  
82 78 77 75 69 61 53 45  
81 76 75 73 67 60 52 45  
80 75 74 72 67 60 53 45  
81 75 74 73 67 60 53 45  
90 85 84 82 80 70 61 53  
88 83 83 81 75 68 60 52  
88 82 80 79 74 68 61 53  
88 82 80 79 74 68 61 54  
94 93 92 89 88 81 72 64  
93 91 89 87 82 76 69 62  
91 88 87 84 81 76 70 64  
93 89 86 84 80 76 70 65  
98 101 103 100 96 95 86 73  
66  
66  
66  
74  
72  
71  
71  
81  
78  
77  
77  
90  
85  
83  
83  
99  
95  
92  
92  
69  
69  
70  
76  
73  
73  
73  
84  
81  
80  
79  
92  
88  
86  
86  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
275  
375  
525  
752  
275  
375  
525  
752  
100  
80  
60  
50  
100  
80  
100  
80  
102  
98  
96  
98  
99 100 97 93 88 81 73  
60  
50  
60  
50  
97 97 97 94 90 86 80 74  
98 98 97 94 90 86 81 75  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
48  
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QEI-54 Class II  
10  
8
RPM  
BHP  
Performance Data  
100  
125  
60% WOV  
75  
% WOV  
50% WOV  
Maximum Fan RPM  
929  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
50  
Specification Data  
20  
15  
10  
5
70% WOV  
Maximum Motor  
Frame Size  
405T  
80% WOV  
6
30  
20  
Minimum Motor  
Starting hp  
15 hp  
66 in.  
11 kW  
1676 mm  
Wheel Diameter  
4
Approximate Weight  
(Less Motor & Drives)  
3600 lbs. 1633 kg.  
90% WOV  
10  
Maximum Bhp = (Fan RPM / 197)3  
Outlet Velocity (FPM) = CFM / 30.46  
Tip Speed (FPM) = Fan RPM x 17.3  
% WOV = (CFM x 100) / (Fan RPM x 104)  
Imperial data — Metric data  
2
0
0
40  
60  
Volume (cfm x 1000)  
80  
90  
100  
0
10  
20  
30  
50  
70  
120  
140  
160  
0
20  
40  
60  
80  
100  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
364  
394  
425  
457  
488  
520  
552  
584  
617  
650  
682  
715  
BHP  
4.71  
5.71  
6.88  
8.22  
9.76  
11.5  
13.5  
15.7  
18.1  
20.9  
23.9  
27.2  
RPM  
407  
433  
460  
488  
516  
546  
577  
608  
639  
671  
702  
734  
BHP  
7.61  
8.78  
10.1  
11.7  
13.4  
15.4  
17.6  
20.0  
22.7  
25.6  
28.9  
32.4  
RPM  
485  
505  
527  
552  
576  
602  
629  
656  
684  
712  
741  
771  
BHP  
14.7  
16.1  
17.7  
19.6  
21.6  
23.9  
26.5  
29.3  
32.3  
35.7  
39.3  
43.3  
RPM  
562  
577  
592  
611  
632  
655  
680  
704  
729  
756  
784  
811  
BHP  
23.0  
24.8  
26.7  
28.8  
31.1  
33.6  
36.5  
39.5  
42.9  
46.6  
50.7  
55.0  
RPM  
636  
645  
656  
671  
687  
707  
728  
750  
775  
800  
824  
850  
BHP  
32.0  
34.3  
36.6  
39.0  
41.6  
44.4  
47.5  
50.8  
54.5  
58.5  
62.8  
67.4  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
33500 1105  
37000 1221  
40500 1336  
44000 1452  
47500 1567  
51000 1683  
54500 1798  
58000 1914  
61500 2029  
65000 2145  
68500 2260  
72000 2376  
710  
719  
728  
743  
759  
775  
796  
818  
840  
865  
889  
44.4  
47.2  
50.1  
53.1  
56.2  
59.5  
63.2  
67.1  
71.2  
75.9  
80.8  
777  
786  
796  
810  
825  
840  
860  
881  
903  
926  
58.3  
61.7  
65.2  
68.7  
72.3  
76.2  
80.4  
85.0  
89.7  
94.9  
840  
849  
859  
872  
887  
903  
920  
73.7  
77.7  
81.8  
85.9  
90.1  
94.5  
99.3  
899  
909  
918  
90.7  
95.2  
99.9  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
275  
% 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
7
8
LWi  
A
RPM  
275  
% 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
7
8
LWo  
78  
A
81 75 72 75 69 58 50 44  
79 72 70 71 65 55 47 38  
77 70 68 70 64 55 47 39  
76 69 68 70 63 55 47 39  
90 84 80 79 81 70 60 54  
87 80 77 77 72 64 56 49  
83 77 75 76 72 63 56 50  
84 77 74 76 70 62 56 50  
93 92 89 87 89 82 72 63  
91 89 87 85 81 74 67 60  
88 85 83 82 79 74 67 61  
90 86 82 81 78 72 67 63  
95 101 100 96 94 97 86 70  
91 98 97 94 89 85 78 70  
90 95 93 90 87 83 77 71  
91 93 92 89 86 82 78 73  
97 104 105 102 99 101 95 79  
92 99 102 100 95 92 86 77  
93 96 98 96 92 89 84 79  
95 96 97 95 92 89 85 80  
74  
71  
70  
69  
83  
78  
77  
76  
92  
86  
84  
83  
101  
95  
93  
92  
106  
101  
98  
97  
84 78 77 78 71 61 54 47  
84 77 76 76 68 59 51 44  
83 75 74 76 68 59 51 44  
83 75 73 76 67 58 51 45  
88 85 85 82 81 71 61 54  
88 84 83 81 75 67 59 51  
88 82 81 80 74 66 59 52  
88 81 79 79 73 65 59 53  
93 93 94 90 89 83 73 64  
90 90 91 88 83 77 69 60  
88 87 88 85 81 75 68 62  
91 88 87 85 80 74 68 63  
96 99 103 99 96 97 87 73  
93 96 101 98 93 88 81 72  
94 94 97 95 90 86 79 73  
97 96 98 94 90 84 79 74  
100 104 108 105 101 102 96 82  
97 101 105 104 98 94 88 79  
99 99 102 100 96 91 86 79  
101 102 103 100 95 91 85 80  
76  
75  
75  
84  
82  
80  
79  
93  
89  
87  
86  
375  
525  
750  
929  
375  
525  
750  
929  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
49  
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QEI-60 Class I  
8
7
6
5
4
3
2
1
0
Performance Data  
Maximum Fan RPM  
Specification Data  
RPM  
BHP  
75  
60% WOV  
% WOV  
18  
16  
14  
12  
10  
8
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
680  
60  
50  
40  
70% WOV  
Maximum Motor  
Frame Size  
405T  
80% WOV  
Minimum Motor  
15 hp  
6
11 kW  
8
0
30  
25  
Starting hp  
Wheel Diameter  
73 in.  
1854 mm  
20  
15  
Approximate Weight  
(Less Motor & Drives)  
3500 lbs. 1588 kg.  
5
6
90% WOV  
0
0
10  
Maximum Bhp = (Fan RPM / 167)3  
Outlet Velocity (FPM) = CFM / 37.23  
Tip Speed (FPM) = Fan RPM x 19.1  
% WOV = (CFM x 100) / (Fan RPM x 159)  
Imperial data — Metric data  
4
2
0
0
0
20  
40  
60  
Volume (cfm x 1000)  
80  
100  
120  
20  
40  
60  
80  
100  
120  
140  
160  
180  
200  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
1.5 2.5  
CFM  
OV  
0.25  
RPM  
0.5  
1
2
3
3.5  
4
BHP  
2.43  
3.36  
4.56  
6.06  
7.89  
10.1  
12.7  
15.8  
19.4  
23.5  
28.2  
33.5  
RPM  
271  
300  
331  
364  
398  
432  
467  
502  
538  
575  
611  
647  
BHP  
3.92  
4.98  
6.33  
8.00  
10.0  
12.4  
15.3  
18.5  
22.3  
26.6  
31.5  
37.0  
RPM  
328  
349  
374  
402  
432  
463  
495  
529  
562  
597  
631  
666  
BHP  
7.58  
8.89  
10.5  
12.4  
14.7  
17.4  
20.5  
24.2  
28.3  
33.0  
38.3  
44.2  
RPM  
380  
397  
417  
440  
465  
493  
523  
555  
586  
619  
652  
BHP  
11.7  
13.4  
15.3  
17.4  
20.0  
22.9  
26.3  
30.3  
34.7  
39.7  
45.3  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
34000  
912  
242  
276  
310  
345  
381  
417  
454  
490  
527  
564  
601  
638  
40000 1073  
46000 1234  
52000 1395  
58000 1556  
64000 1717  
70000 1878  
76000 2039  
82000 2200  
88000 2361  
94000 2522  
100000 2683  
439  
458  
477  
500  
525  
551  
579  
610  
642  
673  
18.2  
20.5  
23.1  
25.8  
29.0  
32.6  
36.7  
41.5  
46.8  
52.7  
484  
494  
514  
533  
556  
580  
606  
634  
663  
23.7  
26.0  
29.0  
32.2  
35.6  
39.4  
43.8  
48.7  
54.3  
534  
547  
566  
586  
609  
632  
659  
32.1  
35.1  
38.8  
42.6  
46.7  
51.3  
56.5  
580  
596  
616  
636  
659  
41.6  
45.5  
49.9  
54.4  
59.2  
615  
625  
644  
663  
48.8  
52.5  
57.2  
62.3  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
% WOV  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
300  
1
2
3
4
5
6
7
8
LWi  
78  
A
RPM  
300  
% WOV  
1
2
3
4
5
6
7
8
LWo  
80  
A
100  
80  
85 81 78 78 73 63 56 51  
83 79 77 75 69 62 55 49  
82 77 76 75 69 63 56 49  
81 77 76 75 69 63 56 49  
92 89 84 82 83 72 64 58  
91 86 82 80 76 70 63 57  
89 84 79 79 76 70 65 59  
89 83 79 79 75 70 65 59  
99 96 90 87 89 79 70 63  
97 93 87 85 81 75 69 63  
95 89 83 82 80 75 70 65  
94 88 83 82 80 75 70 65  
101 101 95 91 92 87 76 69  
99 99 93 89 86 80 74 68  
98 96 88 86 84 80 75 70  
96 95 88 86 84 80 75 70  
103 105 99 95 94 92 81 73  
101 104 97 92 90 85 78 72  
99 101 92 89 88 84 79 74  
99 99 92 89 88 84 79 74  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
100  
80  
60  
86 82 82 80 75 65 57 50  
85 81 80 78 71 64 57 49  
85 79 78 77 71 65 57 49  
85 79 78 77 71 64 57 50  
92 89 89 86 84 75 66 58  
92 87 87 84 78 72 64 56  
91 85 84 82 77 72 65 58  
91 85 84 82 77 72 65 59  
96 94 94 91 90 82 73 65  
95 92 91 88 83 78 70 63  
93 90 89 86 82 77 71 65  
95 90 88 86 82 77 72 67  
98 99 98 96 93 88 79 71  
98 97 95 93 88 83 76 69  
96 95 93 91 87 82 77 71  
98 96 92 90 87 82 77 72  
100 102 101 100 96 93 84 76  
99 101 98 97 92 87 81 73  
98 99 95 95 91 87 81 75  
100 100 95 94 90 86 81 76  
76  
75  
75  
86  
82  
81  
81  
92  
87  
85  
85  
96  
92  
89  
89  
100  
96  
93  
93  
78  
77  
77  
88  
85  
83  
83  
94  
90  
88  
88  
98  
94  
93  
92  
60  
50  
100  
80  
60  
50  
100  
80  
60  
50  
400  
500  
600  
680  
400  
500  
600  
680  
100  
80  
60  
50  
100  
80  
102  
98  
96  
60  
50  
50  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
50  
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QEI-60 Class II  
12  
10  
8
50% WOV  
60% WOV  
Performance Data  
RPM  
BHP  
125  
150  
100  
75  
% WOV  
Density 0.075 lb/ft3  
Density 1.2 kg/m3  
Maximum Fan RPM  
840  
25  
20  
15  
10  
5
Specification Data  
70% WOV  
Maximum Motor  
Frame Size  
405T  
60  
50  
80% WOV  
Minimum Motor  
Starting hp  
15 hp  
73 in.  
11 kW  
1854 mm  
40  
6
Wheel Diameter  
30  
25  
Approximate Weight  
(Less Motor & Drives)  
4
4200 lbs. 1905 kg.  
20  
15  
90% WOV  
Maximum Bhp = (Fan RPM / 167)3  
Outlet Velocity (FPM) = CFM / 37.23  
Tip Speed (FPM) = Fan RPM x 19.1  
% WOV = (CFM x 100) / (Fan RPM x 140)  
Imperial data — Metric data  
2
0
0
0
20  
40  
60  
80  
100  
120  
Volume (cfm x 1000)  
0
50  
100  
150  
200  
Volume (m3/hr x 1000)  
Performance Data  
STATIC PRESSURE (inches wg)  
CFM  
OV  
0.5  
1
2
3
4
5
6
7
8
RPM  
323  
355  
388  
421  
454  
488  
522  
556  
591  
625  
660  
695  
BHP  
5.51  
6.91  
8.58  
10.6  
12.9  
15.5  
18.6  
22.0  
25.9  
30.3  
35.2  
40.7  
RPM  
362  
390  
418  
448  
479  
511  
543  
576  
610  
643  
677  
711  
BHP  
9.20  
10.6  
12.6  
14.8  
17.4  
20.4  
23.8  
27.5  
31.8  
36.5  
41.7  
47.5  
RPM  
436  
455  
479  
504  
531  
559  
588  
617  
647  
678  
710  
742  
BHP  
17.6  
19.6  
21.9  
24.6  
27.6  
31.1  
35.0  
39.3  
44.1  
49.4  
55.3  
61.7  
RPM  
507  
520  
537  
557  
580  
605  
631  
658  
687  
715  
745  
774  
BHP  
27.6  
30.2  
32.9  
35.9  
39.3  
43.2  
47.5  
52.2  
57.6  
63.4  
69.8  
76.7  
RPM  
573  
583  
595  
611  
628  
651  
674  
699  
724  
751  
779  
808  
BHP  
38.5  
41.8  
45.1  
48.6  
52.4  
56.6  
61.3  
66.5  
72.2  
78.3  
85.1  
92.6  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
RPM  
BHP  
40000 1073  
45000 1207  
50000 1341  
55000 1476  
60000 1610  
65000 1744  
70000 1878  
75000 2012  
80000 2147  
85000 2281  
90000 2415  
95000 2549  
641  
651  
662  
678  
694  
715  
738  
762  
787  
813  
840  
54.1  
58.1  
62.3  
66.6  
71.1  
76.2  
81.8  
87.8  
94.5  
101.7  
109.3  
704  
713  
724  
740  
757  
776  
799  
822  
71.7  
76.6  
81.7  
86.7  
92.1  
98.1  
104.6  
111.5  
762  
772  
783  
799  
815  
834  
91.5  
97.2  
817  
827  
839  
113.4  
119.9  
126.7  
103.1  
109.1  
115.3  
122.1  
Shaded values show where Class I fan selections are more efficient than Class II.  
Inlet Sound Power, LWi [dB ref 10-12 watts]  
Outlet Sound Power, LWo [dB ref 10-12 watts]  
RPM  
300  
% 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
7
8
LWi  
A
RPM  
300  
% 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
7
8
LWo  
82  
A
86 80 77 78 76 64 56 49  
83 77 75 75 69 60 52 44  
81 74 73 75 68 59 52 45  
80 73 72 74 67 59 52 45  
95 90 88 86 89 79 70 61  
93 87 86 84 79 72 65 58  
90 83 82 82 78 72 65 59  
91 84 81 81 77 70 65 61  
96 98 96 93 93 91 80 66  
94 95 94 91 86 81 73 66  
91 91 90 88 84 79 73 67  
92 91 89 87 83 78 74 69  
98 103 103 99 97 99 89 73  
95 101 100 96 92 88 81 72  
93 97 96 93 90 86 80 74  
94 97 95 92 89 85 81 76  
100 105 106 102 100 101 94 78  
96 102 103 100 95 91 85 76  
95 99 99 96 93 89 84 78  
97 100 98 95 92 89 84 79  
79  
75  
74  
74  
91  
85  
83  
82  
98  
92  
90  
89  
87 82 82 81 77 66 58 51  
86 81 81 80 72 64 55 48  
86 79 78 80 71 63 56 49  
86 78 77 79 70 62 56 49  
93 92 93 89 89 80 71 62  
91 89 91 87 82 75 66 58  
90 87 88 85 80 73 66 60  
92 87 87 84 79 72 67 61  
96 98 100 96 94 92 81 69  
93 95 98 94 89 84 76 67  
93 93 95 91 87 81 75 69  
95 94 95 91 86 80 75 70  
99 102 105 103 99 99 90 76  
96 99 104 101 96 91 83 75  
97 98 100 98 93 88 82 76  
99 100 100 97 92 87 82 77  
101 104 107 106 102 102 95 81  
98 101 105 104 99 95 88 79  
99 101 102 101 96 92 86 79  
102 104 103 101 96 91 86 81  
80  
79  
78  
92  
88  
86  
85  
99  
96  
93  
92  
450  
600  
750  
840  
450  
600  
750  
840  
104  
98  
95  
105  
102  
99  
95  
99  
107  
101  
99  
108  
105  
102  
102  
98  
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 , LWiA and outlet LWo  
,
LWoA 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 LWiA and LWoA values only.  
51  
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Specifications  
Model QEI-L, QEI-I/II and QEID  
Supply, exhaust, or return air fans shall be  
of the inline mixed flow type.  
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.  
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.  
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.  
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.  
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.  
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.  
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 L of 80,000 (L of 400,000) hours at  
10  
50  
maximum operating speed. QEI-L (vertical  
mount) bearings shall be selected for a  
minimum life, L of 50,000 (L of 250,000)  
10  
50  
Each assembled fan shall be test run at  
the factory at the specified fan RPM. The  
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.  
Prepared to Support  
Green Building Efforts  
As a result of our commitment to continuous improvement, Greenheck reserves the right to change  
specifications without notice.  
00.CVI.1018 R7 5-2012 IP  
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com  
Copyright © 2012 Greenheck Fan Corp.  
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