Product Specification Guide
Direct Drive Backward Inclined Centrifugal Utility Fan, Model USFD-100-BI
Facility Services Subgroup: Division 23 (Previously Division 15)

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Specifier Notes: This product specification guide is written according to the Construction Specifications Institute (CSI) Format.

This section must be carefully reviewed and edited by the Engineer to meet the requirements of the project and local building code. Coordinate with other specification sections and the drawings.

Delete all unnecessary “Specifier Notes” when editing this section. 

Note to User: This document is subject to copyright protection and is proprietary to Greenheck Fan Corporation. However, Greenheck Fan Corporation authorizes the user a limited non-exclusive license to use this document or portions of it for the purpose of preparing written product specifications for the above CSI MasterFormat category. All information in this document as provided by Greenheck Fan Corporation is informational in nature and is provided without representation or warranty of any kind as to the user or any other party, including, without limitation, ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, OR NON-INFRINGEMENT. To the greatest extent permitted by applicable law, Greenheck Fan Corporation assumes no liability, and User assumes all liability and risk, for the use or results from the use of this document or the information contained herein, whether as modified by the user or not. Users should consult www.greenheck.com to verify that this document represents the most current version.
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1.	GENERAL
1.1	WORK INCLUDED  
A.	Direct Drive Backward Inclined Single Width Centrifugal Fan, Model USFD-100-BI

1.2	RELATED SECTIONS 
A.	All sections, drawing plans, specifications and contract documents.

1.3	REFERENCES
A.	ANSI/AMCA Standard 99-10, “Standards Handbook” 
B.	ANSI/AMCA Standard 204-05, “Balance Quality and Vibration Levels for Fans”
C.	ANSI/AMCA Standard 210-07, “Laboratory Methods of Testing Fans for Aerodynamic Performance Rating”
D.	AMCA Publication 211-05,  “Certified Ratings Program – Product Rating Manual for Fan Air Performance”
E.	ANSI/AMCA Standard 300-08, “Reverberant Room Method for Sound Testing of Fans”
F.	AMCA Publication 311-05, “Certified Ratings Program – Product Rating Manual for Fan Sound Performance”
G.	AMBA - Method of Evaluating Load Ratings of Bearings ANSI-11 (r1999).
H.	AMCA Standard 500-D-12, “Laboratory Methods of Testing Dampers for Rating”
I.	OSHA guideline 1910.212 – General requirements for Machine Guarding. (www.osha.gov)
J.	OSHA guideline 1910.219 – General requirements for guarding safe use of mechanical power transmission apparatus.  (www.osha.gov)
K.	OSHA guideline 1926.300 – General requirements for safe operation and maintenance of hand and power tools. (www.osha.gov)
L.	UL/cUL 705, Power Ventilators

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1.4	QUALITY ASSURANCE
A.	Performance ratings: Conform to ANSI/AMCA Standards 210 and 300. Fans must be tested in accordance with AMCA Publications 211 and 311 in an AMCA accredited laboratory and certified for air and sound performance. Fans shall be licensed to bear the AMCA ratings seal for air performance (AMCA 210) and sound performance (AMCA 300).  
B.	Each fan shall be given a balancing analysis which is applied to wheels at the outside radius. The maximum allowable static and dynamic imbalance is 0.05 ounces (Balance grade of G6.3)
C.	Comply with the National Electrical Manufacturers Association (NEMA) standards for motor and electrical accessories.

1.5	SUBMITTALS
A.	Provide dimensional drawings and product data on each centrifugal fan.
B. 	Provide fan curves for each fan at the specified operation point, with the flow, static pressure and horsepower clearly plotted.
C.	Provide outlet velocity of centrifugal fans and fan’s inlet and outlet sound power readings for the eight octave bands. 
D.	Strictly adhere to QUALITY ASSURANCE requirements as stated in section 1.4 of this specification.
E.	Provide manufacturer’s certification that exhaust fan is licensed to bear the Air Movement and Control Association (AMCA) Certified Rating Seal for air and sound performance.
F.	Provide manufacturer’s Installation, Operation and Maintenance manual (IOM), including instructions on safety information, receiving, handling, and storage, installation, electrical wiring diagrams, operation, maintenance, troubleshooting guide, and warranty.

1.6	DELIVERY, STORAGE, AND HANDLING
A.	Deliver materials to site in manufacturer’s original, unopened containers and packaging, with labels clearly indicating manufacturer, material, products included, and location of installation.
B.	Store materials in a dry area indoor, protected from damage, and in accordance with manufacturer’s instructions. For long term storage, follow manufacturer’s Installation, Operation and Maintenance manual.
C.	Handle and lift fans in accordance with the manufacturer’s instructions. Protect materials and finishes during handling and installation to prevent damage. Follow all safety warnings posted by the manufacturer.

1.7	WARRANTY
A.	Submit, for Owner's acceptance, manufacturer's standard warranty document executed by authorized company official. Manufacturer's warranty is in addition to, and not a limitation of, other rights Owner may have under Contract Documents.
a.	The warranty of this equipment is to be free from defects in material and workmanship for a period of one year [two years, three years] from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at the manufacturers’ option when returned to the manufacturer, transportation prepaid.
b.	Motor Warranty is warranted by the motor manufacturer for a period of one year. Should motors furnished prove defective during this period, they should be returned to the nearest authorized motor service station.

2.	PRODUCTS
2.1	GENERAL
A.	Base fan performance at standard conditions (density 0.075 Lb/ft3).
B.	Fans selected shall be capable of accommodating static pressure and flow variations of +/-15% of scheduled values.
C.	Each fan shall be direct drive in AMCA arrangement 4 according to drawings.
D.	Normal operating temperature up to 104 Degrees Fahrenheit (40 Deg. Celsius).
E.	Each fan shall bear a permanently affixed manufacture's engraved metal nameplate containing the model number and individual serial number.
F.	Fans are to be equipped with lifting lugs.
G.	Fans include Nema-3R toggle disconnect switch, bolted access door, one inch unthreaded drain hole, and weatherhood as base features.
H.	Constructed of heavy gauge galvanized steel [painted steel. All interior and exterior surface steel shall be coated with a minimum of 2-4 mils of Permatector (Polyester Urethane), electrostatically applied and baked. Finish color shall be RAL-7023, concrete grey.]

2.2	FAN HOUSING AND OUTLET
A.	Fan housing is to be aerodynamically designed with high-efficiency inlet, engineered to reduce incoming air turbulence.
B.	Fan shall be of airtight PermaLockTM construction with the scroll panel material formed and embedded into the side panels. 
C.	Housing shall be constructed of bolted steel members to prevent vibration and rigidly support the motor and wheel.

2.3	FAN WHEEL
A.	The fan wheel shall be of the non-overloading single width backward inclined centrifugal type.
B.	Constructed of aluminum 
C.	Wheels shall be statically and dynamically balanced to balance grade G6.3 per ANSI S2.19.  
D.	Fan wheel shall be manufactured of single thickness blades securely riveted to a heavy gauge back plate and wheel cone.
E.	The wheel and fan inlet shall be carefully matched and shall have precise running tolerances for maximum performance and operating efficiency.

2.4	FAN MOTORS AND DRIVE
A.	Single phase 
a.	Motors shall be open type enclosure and electronic commutation type motor (ECM) specifically designed for fan applications.  
b.	Motors are permanently lubricated, heavy duty ball bearing type to match with the fan load and pre-wired to the specific voltage and phase.
c.	Internal motor circuitry to convert AC power supplied to the fan to DC power to operate the motor.
d.	Motor shall be speed controllable down to 20% of full speed (80% turndown).  Speed  shall be controlled by either a potentiometer dial mounted at the motor or by a 0-10 VDC signal.
e.	Motor shall be a minimum of 85% efficient at all speeds.
B.	Three Phase 
a.	Motors shall meet or exceed EISA (Energy Independence and Security Act) efficiencies.  Motors to be NEMA T-frame, 1800 RPM, Open Drip Proof (ODP) [Totally Enclosed Fan Cooled (TEFC)]. 
b.	Motors are permanently lubricated, heavy duty ball bearing type to match with the fan load and pre-wired to the specific voltage and phase. 
c.	Variable Frequency Drive (VFD) shall be mounted, wired, and programmed for all three phase motors.
d.	Motor shall be speed controllable down to 1/3 of full speed (2/3 turndown).  Motor speed will be adjustable via VFD interface or by a 0-10 VDC signal.

3.	EXECUTION
3.1	EXAMINATION
A.	Examine areas to receive fans. Notify the Engineer of conditions that would adversely affect installation or subsequent utilization and maintenance of fans. Do not proceed with installation until unsatisfactory conditions are corrected.

3.2	INSTALLATION
A.  	Install fans systems as indicated on the contract drawings.
B. 	Install fans in accordance with manufacturer’s Installation, Operation and Maintenance manual.

4.	ACCEPTABLE MANUFACTURERS
A.	Greenheck Fan Corporation, PO Box 410, Schofield WI 54476-0410, www.greenheck.com
       Model USFD-100-BI, Direct Drive, Backward Inclined Single Width Centrifugal Fans.