Product Specification Guide
Model DS-3, Direct Drive High Volume, Low Speed (HVLS) Overhead Fans 
Facility Services Subgroup: Division 23 Section 23 34 39

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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Specifier Notes: This product specification guide is written in accordance to the Construction Specifications Institute (CSI) Format - 2016 Edition.

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.
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1.	GENERAL

1.1	SUMMARY

A.	Section Includes: High Volume, Low Speed (HVLS) Overhead Fans
B.	Related Sections:
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Specifier Notes: Delete any sections below not relevant to this project; add others as required.
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1.	01 00 00 General Requirements
2.	07 00 00 Thermal and Moisture Protection
3.	09 00 00 Finishes
4.	23 00 00 Heating, Ventilating, and Air-Conditioning (HVAC)
5.	26 00 00 Electrical

1.2	REFERENCES

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Specifier Notes: Delete references from the list below that are not actually required by the text of the edited section.
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A.	Air Movement and Control Association Inc. (AMCA):
1.	99 - Standards Handbook
2.	200 - Publication, Air Systems
3.	201-90 - Publication, Fans and Systems
4.	202-88 - Publication, Troubleshooting
5.	203-90 - Publication, Field Performance Measurement of Fan Systems
6.	211-05 - Publication, Certified Ratings Program – Product Rating Manual for Fan Air Performance
7.	300-96 - Standard Reverberant Room Method for Sound Testing of Fans
8.	311-05 - Publication, Certified Ratings Program – Product Rating Manual for Fan Sound Performance
9.	99-0401-86 - Classification for Spark Resistant Construction
10.	99-2408-69 - Operating Limits for Centrifugal Fans
B.	Air Movement and Control Association Inc. (AMCA), American National Standards Institute (ANSI):
1.	204-05 - Standard Balance Quality and Vibration Levels for Fans
2.	210-99 - Standard Laboratory Methods of Testing Fans for Aerodynamic Performance Rating
3.	230-15 - Standard Laboratory Methods of Testing Air Circulating Fans for Rating and Certification
C.	American National Standards Institute (ANSI):
1.	11-r1999 - Method of Evaluating Load Ratings of Bearings 
D.	American Society of Civil Engineers (ASCE):
1.	7-02 - Minimum Design Loads for Building and Other Structures
E.	American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc. (ASHRAE):
1.	Chapter 45 - 2003 Handbook, HVAC Applications
2.	Chapter 7 - 2001 Fundamentals handbook, Sound-Vibration
3.	Chapter 32 - 2001 Fundamentals handbook, Duct Design
4.	Chapter 18 - 1992 HVAC System and Equipment handbook, Fans
F.	American Society for Testing and Materials (ASTM):
1.	E330-02 - Standard Test Method for Structural Performance of Exterior Windows, Doors, Skylight and Curtain Walls by Uniform Static Air Pressure Difference
G.	National Fire Protection Association (NFPA)
1.	13 - Standard for the Installation of Sprinkler Systems
2.	70 - National Electrical Code
3.	72 - National Fire Alarm and Signaling Code
4.	90A-02 - Standard for the Installation of Air-Conditioning and Ventilating Systems
5.	92A-06 - Recommend Practice for Smoke-Control System
6.	92B-05 - Standard for Smoke Management System in Malls, Atria, and Large Areas
7.	96-04 - Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations
H.	Occupational Safety and Health Administration (OSHA):
1.	1910.212 - General requirements for Machine Guarding
2.	1910.219 - General requirements for guarding safe use of mechanical power transmission apparatus
3.	1926.300 - General requirements for safe operation and maintenance of hand and power tools
I.	Underwriters Laboratories (UL):
1.	507 - Electric Fans
2.	555 - Fire Dampers
3.	555S - Smoke Dampers
4.	705 - Standard Power Ventilators
5.	762 - Standard Power Roof Ventilators for Restaurant Exhaust Appliances
6.	793 - Snow Load

1.3	SUBMITTALS

A.	General: Submit in accordance with Section 01 33 00 Submittal Procedures.
B.	Provide dimensional drawings and product data on each fan.
C.	Provide fan curves for each fan at the specified operation point, with the flow and fan RPM clearly plotted.
D.	Provide A-weighted total sound pressure levels in decibels for each fan.
E.	Strictly adhere to QUALITY ASSURANCE requirements as stated in section 1.4 of this specification.
F.	Provide manufacturer's certification that High Volume, Low Speed (HVLS) overhead fans are licensed to bear the Air Movement and Control Association (AMCA) Certified Rating Seal for Circulating Fan Performance.
G.	Installation, Operation, and Maintenance Manual (IOM): Provide manufacturer's installation, operation, and maintenance manual, including instructions on installation, operation, maintenance, receiving, handling, storage, and cleaning. A troubleshooting guide, parts list, safety information and electrical wiring diagrams shall also be included.

1.4	QUALITY ASSURANCE

A.	Performance ratings shall conform to AMCA standard 211. Fans must be tested in accordance with ANSI/AMCA Standard 230-15 in an AMCA accredited laboratory. Fans shall be certified to bear the AMCA Seal for Circulating Fan Performance.
B.	Entire fan assembly (with or without the optional LED light kit) shall be UL/cUL-Listed to Underwriters Laboratory (UL) Standard 507 and CSA Standard 22.2 No. 113 to ensure compliance with the most current international testing standards. Intertek/ETL certification to UL Standard 507 and CSA Standard 22.2 No. 113 shall not be accepted.
C.	Fans shall be compliant with NFPA 13 – Standard for the Installation of Sprinkler Systems, NFPA 72 – National Fire Alarm and Signaling Code, and NFPA 70 – National Electrical Code (NEC).
D.	Fan controls shall comply with the National Electrical Code (NEC). 
E.	Good workmanship shall be evident in all aspects of the fan’s construction. Field balancing of the fan’s airfoils and hub shall not be required.
F.	All fan motors and variable frequency drives (VFDs) shall be factory-tested prior to shipment. 

1.5	DELIVERY, STORAGE, AND HANDLING

A.	Delivery: 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.	Storage: 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.	Handling: 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.

1.6	WARRANTY

A.	Manufacturer's Warranty: 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 ten years from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at the Manufacturer’s option when returned to Manufacturer, transportation prepaid.
2.	Motor and variable frequency drive (VFD) are warranted by the motor & VFD manufacturer for a period of one year. 

1.7	MAINTENANCE

A.	Refer to Manufacturer's Installation, Operation and Maintenance Manual (IOM), to find maintenance procedures.

2.	PRODUCTS

2.1	MANUFACTURER

A.	Greenheck, PO Box 410, Schofield, Wisconsin 54476. Phone (715) 359-6171. 
Fax (715)355-2399. Website: www.greenheck.com

2.2	DIRECT DRIVE HIGH VOLUME, LOW SPEED (HVLS) OVERHEAD FANS – GREENHECK MODEL DS-3
A.	General Description:
1.	High Volume, Low Speed (HVLS) overhead fans shall be licensed to bear the AMCA Certified Rating Seal for Circulating Fan Performance to ensure performance as cataloged in the field. Unlicensed overhead fans shall not be accepted.
2.	Entire fan assembly (with or without the optional LED light kit) shall be UL/cUL-Listed to Underwriters Laboratory (UL) Standard 507 and CSA Standard 22.2 No. 113 to ensure compliance with the most current international testing standards. Intertek/ETL certification to UL Standard 507 and CSA Standard 22.2 No. 113 shall not be accepted.
3.	Fans are available in eight sizes with nominal impeller diameters ranging from 8 feet through 24 feet (8 - 24 unit sizes).
4.	Performance capabilities up to 176,900 cubic feet per minute (cfm).
5.	Maximum continuous operating temperature of 104° Fahrenheit (40° Celsius).
6.	Designed for forward (counter-clockwise when viewed from floor) and reverse (clockwise when viewed from floor) operation capabilities, for comfort cooling and destratification applications.
7.	Each fan shall bear a permanently affixed manufacturer's mylar nameplate containing the model number, individual serial number, and electrical requirements of the fan. 
B.	Impeller:
1.	Impeller shall be constructed of aerodynamic 6005A-T6 extruded aluminum airfoil blades connected to 6061-T6 machined aluminum struts that are rigidly attached to a heavy-duty, laser-cut aluminum hub. All connections shall be made using a minimum of SAE Grade 8 hardware.
2.	Airfoil blades shall be interlocked with one another and the impeller hub via a heavy-duty steel airfoil retaining ring for safety. Airfoil retaining ring shall be constructed of heavy gauge steel and installed at the factory to ensure proper function. Field-installed airfoil retainers shall not be accepted.
3.	Airfoil blades shall be provided with a mill aluminum finish as standard. Optional finishes shall include industrial powder coatings, anodize finishes, wood grain finishes, or custom color matched coatings.
4.	Airfoil blades shall be optimized for maximum airflow, fan efficiency, and coverage area.
5.	Airfoil blades shall be internally reinforced to minimize blade deflection while the fan is in standby or in operation. Blade deflection shall not exceed ±3.7 inches in either situation.
6.	Airfoil blades shall be designed for minimal weight in order to maximize fan efficiency. Individual blade weight shall not exceed 24 pounds.
7.	Impeller hub shall be secured to the face of the motor by a minimum of 12 bolts. Impeller hub shall also be connected to the building structure via a safety restraint cable and hub retaining ring. Hub retaining ring shall be constructed of heavy gauge steel and installed at the factory to ensure proper function. 
C.	Motor: 
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Specifier Note: Edit the following motor enclosures to fit the requirements of the project. Consult manufacturer for additional information.
1.	Ingress Protection 54 (IP54) - International Electrotechnical Commission (IEC) rating. IP54 rating denotes that motor is dust protected (limited ingress of dust permitted, but will not interfere with operation of the equipment) and protected against water splashed from all directions (limited ingress permitted).
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1.	Motor enclosure: [IP54] 
2.	Motors shall be of the high torque, low speed direct drive type, carefully matched to the fan load and furnished at the specified voltage and phase. High speed motors provided with a gearbox to reduce the operating speed of the fan shall not be permitted.
3.	Motors shall be an external rotor design. Internal rotor motors shall not be permitted.
4.	Motors shall be of the brushless DC type for maximum efficiency and speed controllability. No other motor type shall be accepted.
5.	Motors shall include plug-and-play connectors for all wiring to the variable frequency drive. Motors that require these wiring connections to be stripped and terminated in the field shall not be permitted.
6.	Motors shall include an internally-mounted thermistor for continuous monitoring of the motor’s internal temperature. 
7.	Motors shall include Class B insulation.
D.	Variable Frequency Drive (VFD):
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Specifier Note: Edit the following VFD enclosures to fit the requirements of the project. Consult manufacturer for additional information.
1.	Ingress Protection 40 (IP40) - International Electrotechnical Commission (IEC) rating. IP40 rating denotes that VFD is protected against a solid object greater than 1 mm in diameter and protected against vertically falling drops of water (limited ingress permitted).
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1.	VFD enclosure: [IP40]
2.	VFD shall be factory programmed and designed for Modbus RS-485 communication with control devices via the Modbus RTU communication protocol. 
3.	VFD shall be UL Listed for single phase or three phase input at the specified voltage.
4.	VFD shall be provided with factory-installed, plug-and-play wiring for ease of installation. Plug-and-play wiring shall include power, communication, and fire alarm wiring pigtails that are designed for quick and easy termination in the field. 
5.	VFD shall be factory-wired for power and control of LED light when fan is supplied with optional LED light kit.
6.	VFD shall include two thermistors for continuous monitoring of VFD’s internal and external temperature.
7.	VFD shall include sensors for continuous monitoring of voltage and current.
8.	VFD shall include intelligent protection systems to prevent failures caused by over/under-voltage, over-current, over-temperature, over-speed, and fan impact. VFDs without these protection features shall not be permitted.
9.	VFD shall include the most current firmware version as of the product’s manufacturing date to ensure optimal performance. As a result of continuous development, the manufacturer reserves the right to update VFD firmware without notice. 
E.	Universal Ceiling Mount & Downtube:
1.	Fans shall be provided with a universal ceiling mount that is designed for fast and secure installation on a variety of building structures. Universal ceiling mount shall be constructed of heavy gauge, bolted and welded steel and shall include a pivoting knuckle joint with two axes of rotation to accommodate any ceiling pitch. The knuckle joint shall be constructed of welded steel tubing and reinforced with a redundant steel sleeve for safety. 
2.	Downtube shall be constructed of heavy gauge steel to provide a structural connection between the universal ceiling mount and fan motor. Downtube shall also include a welded guy wire connection ring for fast and secure installation of guy wires.
3.	Universal ceiling mount and downtube shall be powder-coated for corrosion resistance and aesthetic appearance.
4.	Standard drop length between top of universal ceiling mount and top of airfoil blades shall be 3.5 feet. Optional drop lengths are also available in one foot increments between 4 and 10 feet.
5.	All hardware shall be a minimum of SAE Grade 8.
F.	Safety Retention Cables:
1.	Fans shall include a braided galvanized steel safety retention cable that is rated for a load of 495 pounds or greater. Safety retention cable shall be installed on the fan motor at the factory to ensure proper function. Field construction or installation of safety retention cables shall not be permitted.
2.	Safety retention cable shall be secured around the building structure via a minimum of two u-bolt steel cable clamps as standard. Optionally, safety retention cable may be secured via one No. 4 Gripple® connector for ease of installation.
G.	Guy Wires:
1.	Fans shall include braided galvanized steel guy wires designed to prevent lateral movement of the fan when installed. 
2.	Guy wires shall be secured to the building structure via the included beam clamps and quick links for ease of installation. 
3.	Guy wires shall be secured to the fan and tensioned via high-strength steel turnbuckles with quick links. Turnbuckles shall be connected to each guy wire via a minimum of two u-bolt steel cable clamps per guy wire as standard. Optionally, turnbuckles may be connected to each guy wire via one No. 4 Gripple® connector per guy wire for ease of installation.
H.	Fire Control Panel Integration:
1.	Fans shall include a normally closed electromechanical relay for integration with a building’s fire control panel. Normally closed electromechanical relay shall be compatible with 24 VDC/VAC and 115 VAC control signals. 
I.	Options/Accessories:
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Specifier Notes: Specify accessories 1-8 as required for the fans. Delete accessories not required. Consult manufacturer for additional information.
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1.	Finishes: 
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Specifier Notes: Edit the following finishes to meet project requirements: 
a.	Hi-Pro Polyester – Industrial electrostatic powder coating that meets or exceeds the chemical resistance properties of Air Dry Phenolic (heresite). Dry film thickness of 2-3 mils.
b.	Anodize – Hard aluminum oxide coating that resists weathering and chemical attack. Anodized finishes are available with Aluminum Association designations of AA-M10C21A31 (clear anodize, 0.4-0.7 mil thickness) or AA-M10C21A44 (color anodize, >0.7 mil thickness).
c.	Woodgrain – Architectural powder coating with a transferrable woodgrain ink that is permeated into the powder coat finish. Meets the requirements of AAMA 2604. Dry film thickness of 1.2 mil.
Consult manufacturer for additional information.
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a.	Type: [Hi-Pro Polyester] 
1.	Fan Components: [Universal Ceiling Mount] [Downtube] [Impeller Hub] [Airfoil Blades] [Winglets]
2.	Colors: [Flat Black] [Hampton Brown] [Bone White] [Concrete Gray] [Ivory] [Medium Bronze] [Signal Blue] [Safety Yellow] [Safety Orange] [Utility Red] [Equipment Green] [Telegray 4] [Signal Violet] [Match Color Chip]
b.	Type: [Anodize]
1.	Fan Components: [Airfoil Blades]
2.	Colors: [204-R1 Clear Anodize] [Champagne Anodize] [Medium Bronze Anodize] [Black Anodize]
c.	Type: [Woodgrain]
1.	Fan Components: [Airfoil Blades]
2.	Colors: [Golden Knotty Pine] [Honey Knotty Pine] [Natural Cherry] [Dark Oak] [Cinnamon Cherry]
2.	Mounting Hardware:
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Specifier Notes: Edit the following mounting hardware to meet project requirements. Consult manufacturer for additional information.
a.	I-Beam Kit – Includes hardware for mounting fan to I-beams with a flange width up to 10 inches and a web thickness up to 2.75 inches.
b.	Steel Truss Kit – Includes hardware for mounting fan to structural steel angles (by others) that are sized to fit within steel trusses/bar joists. 
c.	Unistrut® Kit (By Others) – Includes universal ceiling mount that is designed for mounting fan to Unistrut® channels (by others) using Unistrut® hardware (by others).
d.	Wood Beam Kit – Includes hardware for mounting fan to wood beams between 4.5 inches and 8.875 inches wide. 
e.	Z-Purlin Kit – Includes hardware for mounting fan to structural steel angles (by others) that are sized to fit within Z-purlins.
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a.	Type: [I-Beam Kit] [Steel Truss Kit] [Unistrut Kit (By Others)] [Wood Beam Kit] [Z-Purlin Kit]
3.	LED Light:
a.	150W LED light; 19,500 lumen output rating; 120° beam angle; 5000K color temperature; requires separate 115V power (by others).
b.	Capable of 0-10VDC dimming via optional fan controls.
4.	Disconnect Switches:
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Specifier Notes: Edit the following disconnect switches to meet project requirements.
National Electrical Manufacturers Association (NEMA) Rated:
a.	NEMA 3R - Outdoor application, protected from falling rain water.
Consult manufacturer for additional information.
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b.	NEMA Rated: [3R] 
c.	Protection: [None] [Fused]
d.	Positive electrical shut-off.
e.	Ability to lock in the open or closed position.
f.	Shipped loose for field mounting.
5.	Overhead Fan Controls:
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Specifier Notes: Edit the following fan controls to meet project requirements. Consult manufacturer for additional information.
a.	Keypad Control – Keypad control with LCD display. Allows users to operate 1, 3, 5, or 10 fans (as specified) of the same model and size as a group, with all fans running at the same speed setting (0-10) with the same direction of rotation. Powered through 24V supplied by the fan’s VFD via shielded CAT-5e communication cable. 
b.	Standard Touchscreen Control – Touchscreen control with backlit LED display. Allows users to operate 1, 3, 5, or 10 fans (as specified) individually or in a group, with any combination of fan models and sizes. Powered through 24V supplied by the fan’s VFD via shielded CAT-5e communication cable.
c.	Advanced Touchscreen Control with BACnet – Touchscreen control with LCD display. Allows users to operate up to 10 or 20 fans (as specified) individually or in groups, with any combination of fan models and sizes. Fans can be controlled locally via the touchscreen or remotely via the BACnet MS/TP communication protocol. Powered through 115V power adapter.
d.	Advanced Touchscreen Control with BACnet and Temp/Humidity Sensors - Touchscreen control with LCD display. Allows users to operate up to 10 or 20 fans (as specified) individually or in groups, with any combination of fan models and sizes. Fans can be controlled locally via the touchscreen or remotely via the BACnet MS/TP communication protocol. Fans can also be programmed for automatic operation based on temperature and humidity in the space using floor and ceiling-mounted temp/humidity sensors. Controller powered through 115V power adapter. Temp/humidity sensors powered through 24V supplied by the fan’s VFD via shielded CAT-5e communication cable.
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a.	Type: [Keypad Control] [Standard Touchscreen Control] [Advanced Touchscreen Control with BACnet] [Advanced Touchscreen Control with BACnet and Temp/Humidity Sensors]
b.	Controls shall be capable of operating one or multiple overhead fans as specified. Controls shall provide start/stop, speed, and rotation direction control capabilities as well as diagnostic and fault history information for each connected fan. Controls shall also be capable of dimming the optional fan-mounted LED light.
c.	Controls shall include RJ45 ports for plug-and-play connection to overhead fans via shielded CAT-5e communication cable in the field.
6.	CAT-5e Cable Length:
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Specifier Notes: Edit the following CAT-5e cable lengths to meet project requirements. CAT-5e cables are shielded and follow EIA/TIA T568B wiring pinout. Consult manufacturer for additional information.
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a.	Factory-Assembled Cable Type: [100 feet] [150 feet] [200 feet]
1.	Factory-assembled CAT-5e cable must be shielded 26 gauge cable with a drain wire and must be compliant with ISO 11801 to prevent network communication issues. Cable must be provided in pre-determined lengths (as specified) and terminated with shielded RJ45 connectors with a soldered drain by the factory. Wiring configuration must follow EIA/TIA T568B wiring pinout and individual cable lengths must not exceed 200 feet.
b.	Field-Assembled Cable Type: [1,000 foot spool]
1.	Field-assembled CAT-5e cable must be shielded 26 gauge cable with a drain wire and must be compliant with ISO 11801 to prevent network communication issues. Cable must be cut to appropriate length and terminated with shielded RJ45 connectors with a soldered drain in the field by an experienced contractor or electrician. Wiring configuration must follow EIA/TIA T568B wiring pinout and individual cable lengths must not exceed 200 feet.
7.	Extended Mechanical Warranties:
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Specifier Notes: Edit the following extended warranties to meet project requirements. Consult manufacturer for additional information.
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a.	Type: [13 Yrs. (3 Yr. Ext.)] [15 Yrs. (5 Yr. Ext.)]
8.	Extended Electrical Warranties:
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Specifier Notes: Edit the following extended warranties to meet project requirements. Consult manufacturer for additional information.
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a.	Type: [3 Yrs. (2 Yr. Ext.)] [5 Yrs. (4 Yr. Ext.)]

3.	EXECUTION

3.1	MANUFACTURER'S INSTRUCTIONS

A.	Compliance: Comply with manufacturer's product data, including technical bulletins, product catalog, and installation instructions.

3.2	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.

3.3	PREPARATION

A.	Verify that the fan is to be installed in a location where the airfoils will be a minimum of 10 feet above the finished floor with a minimum of 3 feet of clearance to any obstructions. 
B.	If the building has a mezzanine or other elevated spaces that may be occupied by people, verify that no component of the fan can be reached from the highest level or deck. The fan must be positioned so that the tips of the airfoils are a minimum of 3 feet away from the furthest point that a person could extend an appendage outward. 
C.	If the fan is to be mounted in an area where materials or equipment may be elevated into its path, ensure that the floor is marked or painted to alert personnel of the overhead location of the fans.
D.	If the building is equipped with a fire sprinkler system, verify that the placement of the fan will not interfere with correct sprinkler operation and that the fan installation complies with all national, state and local codes. For NFPA 13 compliance, fans must be installed in the center of four adjacent sprinklers with at least 3 feet of vertical clearance between the fan and sprinkler deflectors. Fans must also be interlocked to shut down upon receiving a waterflow signal from the building’s alarm system. 
E.	Check to see if the intended placement of the fan is directly below any building lights or skylights. Avoid installing fans directly below a light source to prevent a strobing effect that can be caused by fan rotation. 
F.	For best performance, fans must be installed with a two fan diameter minimum clearance between the center of the fan and radiant heaters or HVAC system discharges or intakes.
G.	Verify that the mounting surface will bear the operating weight and maximum torque (twisting force) of the unit. The Structural Engineer of Record (SEOR) must perform a thorough evaluation of the mounting structure and determine all final mounting requirements before the fan is installed. 

3.4	INSTALLATION

A.	Install fan system as indicated in the Installation, Operation and Maintenance Manual (IOM) and contract drawings.
B.	Install fans in accordance with manufacturer's instructions.

3.5	SYSTEM STARTUP

A.	Refer to Installation, Operation, and Maintenance Manual (IOM).

3.6	CLEANING

A.	Clean as recommended by manufacturer. Do not use material or methods which may damage finish surface or surrounding construction.

3.7	PROTECTION

A.	Protect installed product and finished surfaces from damage during construction.
B.	Protect installed fans to ensure that, except for normal weathering, fans will be without damage or deterioration at time of substantial completion.

Section 1.01	END OF SECTION 23 34 39