Product Specification Guide
Belt Driven Single Width Centrifugal Fan, Model USF
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.	Belt Driven Single Width Centrifugal Fan, Model USF

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
M.	UL/cUL 762, Power Ventilators for Restaurant Exhaust Appliances
N.	UL/cUL Power Ventilator for Smoke Control Systems

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). 
B.	Fans shall have a Fan Energy Index (FEI) rating that meets or exceeds requirements of the latest edition of ASHRAE 90.1.
C.	Fans shall be licensed to bear the Air Movement and Control Association (AMCA) Certified Ratings Program (CRP) seal for FEI.
D.	The Fan FEI rating shall be indicated on the design documents and manufacturer product submittals to allow for compliance verification by the building official.
E.	Classification for Spark Resistant Construction shall conform to ANSI/AMCA Standard 99.
F.	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)
G.	Comply with the National Electrical Manufacturers Association (NEMA) standards for motor and electrical accessories.
H.	Each fan shall undergo a factory run test where fan RPM and amp draw are recorded.  This information is available to the customer free of charge upon request.  

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 performance and sound performance where applicable.
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 belt drive in AMCA arrangement 10 [1, 3, 9] according to drawings. 
D.	Normal operating temperature up to 180 Degrees Fahrenheit.
E.	Each fan shall bear a permanently affixed manufacture's engraved metal nameplate containing the model and individual serial number.
F.	Fans are to be equipped with lifting lugs.
G.	Constructed of heavy gauge steel
H.	After fabrication, untreated steel components go through a multi-stage cleaning and pre-treatment process before being finished with a high-performance powder coating having a minimum thickness of 2-4 mils, 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.  No uncoated metal fan parts will be allowed.

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 [continuously welded heavy gauge scroll construction]. All interior and exterior surface untreated steel shall be coated with a high-performance powder coating. 
C.	Housing and bearing support shall be constructed of bolted framework. [welded formed steel members to prevent vibration and rigidly support the shaft and bearings].
D.	An OSHA compliant belt guard shall be included to completely cover the motor pulley and belt(s).

2.3	FAN WHEEL
A.	The fan wheel shall be of the single width backward inclined [airfoil, forward curved] centrifugal type.
B.	Fan Wheel shall be statically and dynamically balanced to balance grade G6.3 per ANSI S2.19.  
C.	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 EISA (Energy Independence and Security Act) efficiencies. Motors to be NEMA T-frame, 1170, 1770 or 3500 RPM in 60 Hz, (1425 or 2900 in 50 Hz) Open Drip Proof (ODP), Totally Enclosed Fan Cooled (TEFC) or Explosion Proof (EXP).
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.	Movable motor plate with adjustment screws to make belt tensioning operations.
D.	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.
E.	Fan shaft bearings shall be Air Handling Quality, bearings shall be heavy-duty grease lubricated, self-aligning or roller pillow block type.  
F.	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 ensure the inner race diameter is within tolerance to prevent vibration.
G.	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}.  
H.	Bearings shall have Zerk fittings to allow for lubrication. 

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 USF, Belt Driven Single Width Centrifugal Fan

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5.	ADDITIONAL SPECIFICATIONS

Specifier Notes: 
To provide additional specifications not found in the general specifications above.  

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AMCA Air and Sound

Fans shall be licensed to bear the AMCA ratings seal for air performance (AMCA 210) and sound performance (AMCA 300).

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Factory Vibration Test

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 each bearing in the horizontal, vertical and axial direction. The maximum allowable fan vibration shall be 0.15 in. /sec peak velocity, filter-in as measured at the fan RPM.  Report shall be provided at no charge to the customer upon request.

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L10 200,000 Bearings

Bearings shall be selected for a basic rating fatigue life (L-10) of 200,000 hours at maximum operating speed for each pressure class {Average Life or (L-50) of 1,000,000 hours}.

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Extended lube lines

Bearings shall have extended tubing with Zerk fittings for lubrication with the Zerk fitting installed on the outside of the fan to allow for easy access of lubrication maintenance.

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UL Smoke

Fans shall be UL listed as “Power Ventilators for Smoke Control Systems” (by maximum temperature for a minimum number of hours of operation) for the following:  

1.	500F (260C) maximum temperature for a minimum of 4 hours of operation
2.	572F (300C) maximum temperature for a minimum of 2 hours of operation
3.	752F (400C) maximum temperature for a minimum of 2 hours of operation
4.	1000F (538C) maximum temperature for a minimum of 15 minutes of operation 

The UL Power Ventilators for Smoke Control sticker shall be fixed to the fan housing. 

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Sure-Aire Flow Monitoring

Fans with Sure-Aire Flow Monitoring selected shall include the following.

1.	Flow monitoring station shall monitor the pressure difference between the fan inlet and the smallest diameter of the inlet cone.
2.	Volumetric flow to be calculated from empirically derived formulas based on testing by the fan manufacturer.
3.	Flow monitoring station shall not use air restricting flow devices that reduce fan performance or create additional fan sound.
4.	Four (4) equidistantly spaced sensor orifices to be drilled in the smallest diameter of the inlet cone venturi. Flow tubes from each venturi sensor shall be extended to a termination plate mounted on the fan housing.
5.	High-pressure flow port(s) shall be mounted in low velocity fan inlet. Flow ports from the high-pressure sensor shall extend to a termination plate mounted on the fan housing.
6.	Termination plate shall include a low-pressure connection, a high-pressure connection and a listing of the empirically determined flow rate coefficient.
7.	Flow monitoring station shall accurately measure the pressure differential to within +/- 3%.
8.	Flow monitoring station to be installed by the fan manufacturer as part of the standard fan assembly.
9.	Flow monitoring station to be supplied with electronics package that includes pressure transmitter and LCD digital readout.

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Fan Monitoring System

Fans with a Fan Monitoring System selected shall include the following. 

Fan Monitor shall include all of the following:
1.	NEMA-4 / IP56 Enclosure rating
2.	Factory calibrated, plug and play wiring
3.	120-240 VAC or 24 VAC/VDC input voltage
4.	Two analog sensor inputs using any of the following: 4-20 mA, 0-10 VDC, 2-10 VDC
5.	Three selectable isolated outputs matched to inputs: 4-20 mA, 0-10 VDC, 2-10 VDC
6.	Temperature range: -4 to 140°F (-20 to 60°C)
7.	LCD display with touch panel interface
8.	English or metric readings
9.	ETL Listed

And one of the following sensor packages.
•	Bearing Vibration
•	Current
•	Current and Vibration
•	Bearing Temperature
•	RPM and Current
•	Airstream Temperature and Pressure
•	Fan RPM
•	RPM and Vibration
•	System Pressures

Bearing Vibration: Used to detect and monitor vibration on fan shaft bearing(s) or motor bearing.
1.	Velocity vibration sensor, corrosion resistant stainless steel casing
2.	Temperature Range: -40 to 185°F (-40 to 85°C)
3.	Input Voltage: 10 VDC minimum, 30 VDC maximum
4.	Output Signal: 4-20 mA
5.	Accuracy: 5% transverse sensitivity, ±2% repeatability
6.	Each kit includes sensor unit, base and cable.
 Fan monitor programmed with fault setting for alarm and IO for trend analysis indicating bearing condition.

Current Sensor: Used to detect current (amps) usage of motor.
1.	Current sensor with analog output, operating power induced from monitored wiring
2.	NEMA 4/4X, 6 (IP 66/67) polycarbonate mounting enclosure
3.	Temperature Range: 5 to 104°F (-15 to 40°C)
4.	Output Signal: 0-10 VDC
5.	Maximum Motor Current: 100 Amps
6.	Maximum distance from fan monitor: 100 feet (30 m)
7.	Accuracy: ±1%, 2 to 100% FSO
Fan monitor to provide fault setting for alarm, run time value for maintenance and power usage.

Bearing Temperature: Used to detect and monitor temperature on fan shaft bearings.
1.	J type thermocouple terminal ring with wiring
2.	Push button temperature transmitter with LED for visual sensor fault and programming mode
3.	NEMA 4X (IP 66) transmitter mounting enclosure
4.	Temperature Range:
•	Temperature Terminal Ring: 32 to 482°F (0 to 250°C)
•	Transmitter: -4 to 158°F (-20 to 70°C)
5.	Input Voltage: 24 VDC
6.	Output Signal: 4-20 mA
7.	Accuracy: ±0.9°F (±0.5°C)
Fan monitor programmed with fault setting for alarm and IO for trend analysis indicating future bearing health and real-time temperature status reading.

RPM: Used to detect rpm of fan.
1.	Inductive proximity sensor with nickel plated brass construction
2.	Frequency to analog converter and transmitter
3.	NEMA 4X (IP 67) transmitter enclosure
4.	Temperature Range: 32 to 120°F (0 to 50°C)
5.	Input Voltage: 9 VDC minimum, 32 VDC maximum
6.	Output Signal: 4-20 mA
7.	Maximum distance from fan monitor: 100 feet (30 m)
8.	Accuracy: ±0.1%
Fan monitor to provide fault setting for alarm exceeding maximum limit, actual run time and maintenance for fan bearing lubrication, motor lubrication and belt replacement.

Airstream Temperature: Used to detect system process temperature.
1.	Thermocouple stainless steel construction
2.	Push button temperature transmitter with LED for visual sensor fault and programming mode
3.	NEMA 4X (IP 66 with supplied mounting enclosure
4.	Temperature Range:
•	Temperature Probe: -148 to 212°F (-100 to 100°C)
•	Transmitter: -4 to 158°F (-20 to 70°C)
5.	Input Voltage: 24 VDC
6.	Output Signal: 4-20 mA
7.	Accuracy: ±0.9°F (±0.5°C)
Fan monitor to provide a system fault for high and/or low temperature and active status reading.

Pressure: Used to detect system pressure or pressure differential.
1.	Two (2) pressure probes with stainless steel tip and integral mounting bracket
2.	Differential pressure transmitter
3.	NEMA 4X (IP 66) enclosure for transmitter
4.	Temperature Range: 0 to 150°F (-18 to 66°C)
5.	Input Voltage: 10 to 35 VDC
6.	Output Signal: 0 to 10 VDC
7.	Accuracy: ±1%
Fan monitor to provide a system fault alarm and active status reading.

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