Specifications

Model QEI-L, QEI-I/II and QEID

Supply, exhaust, or return air fans shall be of the inline mixed flow type.

The housing shall be constructed of welded heavy-gauge steel to assure no air leakage. Housing shall have inlet and outlet collars for slip-fit duct connections. The housing and bearing and/or motor supports shall be constructed of heavy-gauge steel members to prevent vibration and rigidly support the shaft and bearings. Welded steel vanes shall straighten the flow of air from the fan discharge.

All QEI-L and QEI-I/II units up through size 27 shall incorporate a universal mounting system that allows the fan to be mounted in either vertical or horizontal configurations and field rotation of the motor position in

90 degree increments. Bearing life shall not be reduced below specified level in different configurations. QEI-I/II units size 30 and larger shall allow for field rotation of motor positions. Units shall accommodate base mount or ceiling hung mounting without structural modifications to the fan.

The wheel shall be of the mixed flow type. Wheels shall have a wheel cone, spherical back plate and single thickness cambered blades. Wheels shall be statically and dynamically balanced to balance grade

G6.3 per ANSI S2.19. The wheel cone and fan inlet cone shall be carefully matched and shall have precise running tolerances for maximum performance and operating efficiency.

Each assembled fan shall be test run at the factory at the specified fan RPM. The

maximum allowable fan vibration shall be

0.15in/sec. peak velocity, filter-in for QEI-I/II with signatures taken on each bearing in three planes; horizontal, vertical, and axial. Maximum vibration of 0.08 in/sec. peak velocity, filter-in for QEID in a single plane on the fan housing. This report shall be provided at no charge to the customer upon request.

Inlet and outlet sound power levels shall be provided for each of the eight octave bands at the point of operation.

Fans shall be licensed to bear the AMCA Seal for Sound and Air Performance.

Mixed flow fans shall be Model QEI-L, QEI-I/II or QEID as manufactured by Greenheck Fan Corporation, Schofield, Wisconsin, USA and shall be supplied as shown on the plans and in the fan schedule.

Additional Belt Drive Specification

Turned, precision ground and polished steel shafts shall be sized so the first critical speed is at least 25% over the maximum operating speed. Close tolerances shall be maintained where the shaft makes contact with the bearings.

Bearings shall be heavy-duty, grease lubricated, self-aligning ball or roller type with extended lubrication lines.

QEI-I/II and QEI-L (horizontal mount) bearings shall be selected for a minimum life L10 of 80,000 (L50 of 400,000) hours at maximum operating speed. QEI-L (vertical mount) bearings shall be selected for a minimum life, L10 of 50,000 (L50 of 250,000) hours at maximum operating speed.

Our Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the shipment date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.

Prepared to Support Green Building Efforts

P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com