Product Specification Guide
Model Direct Drive Vane Axial Fan
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 Vane Axial Fans, Models VAD

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.	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.	OSHA guideline 1910.212 – General requirements for Machine Guarding. (www.osha.gov)
I.	OSHA guideline 1910.219 – General requirements for guarding safe use of mechanical power transmission apparatus.  (www.osha.gov)
J.	OSHA guideline 1926.300 – General requirements for safe operation and maintenance of hand and power tools. (www.osha.gov)
K.	UL/cUL Standard 705, Power Ventilators

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1.4	QUALITY ASSURANCE
A.	Performance ratings: Conform to ANSI/AMCA Standard 210 and 300. Fan must be tested in accordance with AMCA Publications 211 and 311 in an AMCA accredited laboratory and certified for air performance. Fan shall be licensed to bear the AMCA ratings seal for air performance (AMCA 210).  
B.	Classification for Spark Resistant Construction shall conform to ANSI/AMCA Standard 99.
C.	Each fan shall be given an electronic vibration analysis in accordance with ANSI/AMCA Standard 204, while operating at the specified fan RPM. The vibration signatures shall be taken on the motor mounting plate in the horizontal, vertical, and axial direction. The maximum allowable fan vibration shall meet balance quality grade G 1.0 standards (0.0785 in. /sec peak velocity, filter-in as measured at the fan RPM). Report shall be provided at no charge to the customer upon request.

1.5	SUBMITTALS
A.	Provide dimensional drawings and product data on each direct drive vane axial 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 axial fans and both 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.

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.
1.	The warranty of this equipment is to be free from defects in material and workmanship for a period of 12 months 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.
2.	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 only, with propeller hub positively secured with a steel taper lock bushing keyed to the motor shaft.
D.	Fans are to be equipped with lifting lugs.
E.	After fabrication all carbon steel components shall be cleaned and chemically treated by a phosphatizing process to insure proper removal of grease, oil, scale, etc. Fan shall then 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. Coating must exceed 1,000-hour salt spray under ASTM B117 test method.

2.2	FAN HOUSING AND OUTLET
A.	Fan housing shall be fabricated from heavy gauge steel with pre-punched flanges at both ends.
B.	A minimum of seven heavy gauge, straightening vanes shall be welded to the fan housing downstream from the rotor.
C.	Fan housing shall be constructed of rolled steel with a continuous seam weld. Housing to be coated with a minimum of 3 mils of Permatector, an electrostatically applied and baked polyester urethane.  Finish color shall be RAL 7023, concrete grey. Coating must exceed 1,000-hour salt spray under ASTM B117 test method.
D.	Motor support framework to be constructed of structural steel that is suitable to handle the weights of the motor and propeller. Motor supports within the fan housing to be welded to the fan casing.  Bolted construction is not acceptable. All support framework to be coated with a minimum of 3 mils of Permatector, an electrostatically applied and baked polyester urethane. Finish color shall be RAL 7023, concrete grey. Coating must exceed 1,000-hour salt spray under ASTM B117 test method.

2.3	FAN IMPELLER
A.	Rotor blades and hub shall be heat-treated cast aluminum alloy A356-T6 with blade bases and hub sockets precision machined. Blades shall be attached to the hub with steel studs and self-locking nuts.
B.	Rotor blade pitch shall be manually adjustable (within horsepower limitations) without removing the propeller from the motor shaft.
C.	A taper lock bushing shall be used to mount the propeller to the motor shaft.
D.	The propeller diameter and fan casing inside diameter shall be carefully matched and shall have precise running tolerances for maximum performance and operating efficiency. 

2.4	FAN MOTORS AND DRIVE
A.	Motors shall meet or exceed EPACT (Energy Policy ACT) efficiencies. Motors to be NEMA T-frame, 690, 870, 1170, 1770 or 3500 RPM in 60 Hz (720, 920, 1425 or 2900 RPM in 50 Hz), Open Drip Proof (ODP) [Totally Enclosed Air Open (TEAO)] with a 1.15 service factor. 
B.	Motors shall include extended leads to allow for mounting the motor junction box on the exterior casing of the fan. This design shall allow for greater free area inside of the fan casing to prevent performance losses.
C.	Extended motor leads to be enclosed in conduit to protect from high air velocities.
D.	Extended motor lube lines (when applicable) shall be of copper tubing to handle high air velocities.

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 VAD, Direct Drive Vane Axial Fans.