Greenheck Fan QEM, QEP manual Standard Construction and Features

Standard Construction and Features

12-Blade Aluminum Airfoil Wheel

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high efficiency and low sound 12-blade airfoil design. The aluminum wheel reduces start-up torque requirements as well as shaft loading during PQFSBUJPO
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blades to improve efficiency and reduce vibration. All wheels are balanced to grade G6.3 per ANSI S2.19.

AMCA Air and Sound Certification

AMCA certification assures that all Greenheck plenum fans will perform as cataloged. Fans are rated for air performance as well as sound levels (inlet and outlet).

Quality Assurance

All plenum fans receive a run test at the design speed in the factory after final assembly. QEM fans are checked for amp draw and the levels recorded. QEP fans are subjected to a complete vibration analysis in three planes. The recorded filter-in vibration levels must meet

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A permanent record of this test is kept on file at the factory for future reference. A copy of the test report is available upon request.

Premium Quality Bearings

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supplied with air handling quality bearings which are 
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tolerance for swivel torque, noise levels and bore size specifications. Other bearing design features include concentric mounting collars (no set screws) which provide superior grip force between the collar and the fan shaft as well as zerk fittings for lubrication.

	QEM	QEP
Available Sizes	11 sizes	18 sizes
	12–36	12–73
.BYJNVN 7PMVNF	 DGN	200,000 cfm
	17 m3T	99 m3T
Maximum Pressure	 JO XH	12 in. wg
	1.6 kPa	3 kPa
Performance Classes	I, II (Partial)	I, II, III
Arrangements	4, 9	1, 3, 4
Mounting	Horizontal	Horizontal,
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8IFFM #MBEF "MVNJOVN	Standard	Standard
AMCA Air	Standard	Standard
AMCA Sound	Standard	Standard
8IFFM #BMBODF	G 6.3	G 6.3
3FDPSEFE 7JCSBUJPO 4JHOBUVSF	No	Standard
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L10  IST  -  IST	Standard	/"
L10  IST  -400,000 hrs	/"	Standard
Framework Construction
Galvanized Steel	Standard	/"
Permatector™ Coated Steel	/"	Standard
Integral Lifting Points	Standard	Standard

Drive Frame

All plenum fans feature a laser cut and formed framework. Model QEM utilizes a galvanized construction, while the QEP features a fully welded design with

Permatector™, an electrostatically applied polyester urethane powder coat finish.

Fan Shaft

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speed for increased bearing life and decreased vibration.

CAD Drawings Available

To assist with system design and layout, 2D CAD files for all plenum fans are available. Drawings can be downloaded directly through the CAPS program after product selection at www.greenheck.com or consult the factory.