Greenheck Fan QEP - Manual (Page 12)

Direct drive construction offers many advantages for commercial or
industrial air handling applications.
- Reduced maintenance (no belts and shaft bearings to service)
- Compact housing design requires a smaller footprint
- Low vibration
- Suitable for clean air application (no belt or bearing residue in airstream)
Flow Control Options
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width wheel to assist in matching actual fan performance to the desired
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assist in system balancing and provides flexibility in adapting to future
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reducing energy consumption. Partial wheel widths can also be used to
attain a specific fan performance. Partial wheel widths are available in
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The charts on these pages allow for a quick estimation of the required fan
size and motor speed to achieve the desired point of operation. Colored
bands for a given size in each chart show the acceptable performance
range for the most commonly selected fan sizes at a given motor speed.
For detailed selection information, please consult our Computer Aided
Product Selection (CAPS) software.
Direct Drive
Selections
QEP Arrangement 4
Horizontal, Direct Drive
QEM Arrangement 4
Horizontal, Direct Drive
7PMVNF DGNY
4
3
2
1
0
1 5 10 50 100
15 16 18 20 22 24 27 30 33 36 40
4
3
2
1
0
1 5 10 50 100
15 16 18 20 22 24 27 30 33 36 40 44 49 54 60
Static
Pressure
(in. wg)
7PMVNF DGNY
Static
Pressure
(in. wg)
1425 RPM
(50 Hz)
Model QEM
4J[FT‰
Model QEP
4J[FT‰
950 RPM
(50 Hz)
Model QEM
4J[FT‰
Model QEP
4J[FT‰
Direct Drive models are not licensed to bear the AMCA Seal
12