Product Specification Guide
Model Commercial Tubular Centrifugal Fans
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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PART 1 GENERAL
1.1 	WORK INCLUDED 
A.	Industrial Tubular Centrifugal Fans, Models TCB, TCBRS, TCBRU

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.	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 Standard 705, “Power Ventilators”

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 performance. Fans shall be licensed to bear the AMCA ratings seal for air performance (AMCA 210) and sound performance (AMCA 300). 
B.	Classification for Spark Resistant Construction shall conform to ANSI/AMCA Standard 99.

1.5	SUBMITTALS
A.	Provide dimensional drawings and product data on each tubular 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 inlet 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.

PART 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 belt driven in AMCA arrangement 9 only with wheel secured to the fan 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 to be aerodynamically designed with punched inlet and outlet flanges for ductwork connection on inline fans.
B.	Fan housing shall be constructed of rolled steel with a continuous seam weld. 
C.	Housing and bearing support shall be constructed of welded structural steel members to prevent vibration and rigidly support the shaft and bearings.
D.	Either an OSHA compliant weatherhood, or an OSHA compliant belt guard shall be included to completely cover the motor pulley and belt(s).

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Specifier Notes: TCBRS (TCB Roof Supply) fans shall meet the following additional requirements:

A.	Curb cap shall be constructed of painted steel and welded to the fan housing.
B.	Hoods shall be inter-locking panel style for superior strength. Hood construction shall be painted steel.
C.	One-half inch galvanized mesh bird screen shall be horizontally mounted in the intake perimeter of the hood.

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Specifier Notes: TCBRU (TCB Roof Upblast) fans shall meet the following additional requirements:

A.	Curb cap shall be constructed of painted steel and welded to the fan housing.
B.	Windbands shall be constructed of heavy gauge painted steel with reinforced edges and bolted seams.
C.	Butterfly dampers are to be supplied on all fans size 18 and greater. For fans smaller than size 18, stack cap dampers shall be provided. All dampers shall be constructed of aluminum.

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2.3	FAN WHEEL
A.	The fan wheel shall be of the non-overloading backward inclined centrifugal type. Wheels shall be statically and dynamically balanced to balance grade G6.3 per ANSI S2.19.

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Specifier Notes: Fan wheel level of construction:

B.	Level I: Wheel shall be constructed with half-welded and half-riveted aluminum. The maximum pressure capabilities shall be 2 inches W.G. 
B.	Level II: Wheel shall be constructed with completely welded aluminum. The maximum pressure capabilities shall be 4.5 inches W.G.

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C.	Aluminum parts shall not require protective coating.
D.	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.	Motors shall meet or exceed EPACT (Energy Policy ACT) efficiencies. Motors to be NEMA T-frame, 1800 or 3600 RPM, Open Drip Proof (ODP) [Totally Enclosed Fan Cooled (TEFC), Explosion Proof (EXP)] with a 1.15 service factor. 
B.	Drive belts and sheaves shall be sized for 150% of the fan operating brake horsepower, and shall be readily and easily accessible for service, if required. 
C.	Fan shaft to be turned and polished steel that is sized so the first critical speed is at least 25% over the maximum operating speed for each pressure class.
D.	Fan shaft bearings shall be Air Handling Quality, bearings shall be heavy-duty grease lubricated, self-aligning or roller pillow block type. 
E.	Air Handling Quality bearings to be designed with low swivel torque to allow the outer race of the bearing to pivot or swivel within the cast pillow block. Bearings shall be 100% tested for noise and vibration by the manufacturer. Bearings shall be 100% tested to insure the inner race diameter is within tolerance to prevent vibration.
F.	Bearings shall be selected for a basic rating fatigue life (L-10) of 80,000 hours at maximum operating speed for each pressure class {Average Life or (L-50) of 400,000 hours}. 
G.	Bearings shall be fixed to the fan shaft using concentric mounting locking collars, which reduce vibration, increase service life, and improve serviceability. Bearings that use set screws shall not be allowed. 
H.	Bearings shall have extended lube lines with Zerk fittings to allow for lubrication.

PART 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.

PART 4 ACCEPTABLE MANUFACTURERS
A.	Greenheck Fan Corporation, PO Box 410, Schofield WI 54476-0410, www.greenheck.com 
    Model TCB, TCBRS, TCBRU, Commercial Tubular Centrifugal Fans