July 22, 1994

Contract \# TW0592

**SPECIAL SPECIFICATION**

**SECTION 15865**

**[AXIAL FANS]{.underline}**

[Page]{.underline}

**[PART 1 - GENERAL]{.underline}**

1.01 Description.. 2

1.02Related Work.. 2

1.03Quality Assurance\... 2

1.04References. 2

1.05Submittals.. 3

1.06 Delivery, Storage, and Handling.. 4

1.07Sequencing.. 4

1.08 Extra Materials.. 4

**[PART 2 - PRODUCTS]{.underline}**

2.01Acceptable Manufacturers.. 5

2.02 Fans. 5

2.03 Vaneaxial Fans.. 6

2.04 Motors\... 7

**[PART 3 - EXECUTION]{.underline}**

3.01 Inspection\... 10

3.02 Installation/Application/Erection.. 10

3.03 Field Quality Control\... 10

3.04 Adjusting and Cleaning.. 11

3.05 Commissioning\.... 11

3.06 Demonstration. 11

**SPECIAL SPECIFICATION**

**SECTION 15865**

**[AXIAL FANS]{.underline}**

**[PART 1 - GENERAL]{.underline}**

**1.01 [DESCRIPTION]{.underline}**

> A. This Section includes vaneaxial-type axial fans.

**1.02 [RELATED WORK]{.underline}**

> A. Section 01300
>
> B. Section 15010
>
> C. Section 15200
>
> D. Section 15901
>
> E. Section 15995
>
> F. Division 16 Section \"Circuit and Motor Disconnects\" for
> disconnect switches.
>
> G. Division 16 Section \"Motor Controllers\" for motor starters.
>
> H. Division 16 Section \"Motor Control Centers\" for starters and
> fusible switches.

**1.03 [QUALITY ASSURANCE]{.underline}**

> A. Provide motors and electrical accessories that comply with National
> Electrical Manufacturers Association (NEMA) standards.
>
> B. Provide components according to National Fire Protection
> Association (NFPA) 70 \"National Electrical Code.\"

**1.04 [REFERENCES]{.underline}**

> A. Anti-Friction Bearing Manufacturers Association (AFBMA) Standard 9
> for ball bearings
>
> B. AFBMA Standard 11 for roller bearings
>
> C. Air Movement Contractors Association (AMCA) Standard 210/American
> Society of Heating, Refrigerating, and Air-Conditioning Engineers
> (ASHRAE) Standard 51, Laboratory Methods of Testing Fans for Rating
>
> D. AMCA Standard 300, Test Code for Sound Rating
>
> E. AMCA Standard 301, Method for Calculating Fan Sound Ratings From
> Laboratory Test Data
>
> F. Institute of Electrical and Electronic Engineers (IEEE) Standard
> 112, Test Method B
>
> G. NEMA 1
>
> H. NEMA Standard MG 1
>
> I. NFPA 70, National Electrical Code

**1.05 [SUBMITTALS]{.underline}**

> A. Make submittals according to this Section, Section 15010, and
> Section 01300.
>
> B. Provide product data for selected models, including specialties,
> accessories, and the following:
>
> 1\. Certified fan performance curves with system operating conditions
> indicated. All performance curves shall be corrected for an altitude
> of 5,200 ft.
>
> 2\. Certified fan sound power ratings.
>
> 3\. Motor ratings and electrical characteristics plus motor and fan
> accessories.
>
> 4\. Materials gages and finishes, including color charts.
>
> C. Provide shop drawings from manufacturer detailing equipment
> assemblies and indicating dimensions, weights, required clearances,
> components, and location and size of field connections.
>
> D. Provide wiring diagrams that detail power, signal, and control
> wiring. Differentiate between manufacturer-installed wiring and field-
> installed wiring.
>
> E. Provide maintenance data in operating and maintenance manuals as
> specified in Section 01300.

**1.06 [DELIVERY, STORAGE, AND HANDLING]{.underline}**

> A. Deliver fan units as a factory-assembled unit to the extent
> allowable by shipping limitations, with protective crating and
> covering.
>
> B. See Section 15010.

**1.07 [SEQUENCING]{.underline}**

> A. Coordinate the size and location of structural steel support
> members.

**1.08 [EXTRA MATERIALS]{.underline}**

> A. Furnish one additional complete set of belts for each belt-driven
> fan.

**[PART 2 - PRODUCTS]{.underline}**

**2.01 [ACCEPTABLE MANUFACTURERS]{.underline}**

> A. Provide products by one of the following:
>
> 1\. Vaneaxial Fans:
>
> a\. Trane Co.
>
> b\. Barry Blower
>
> c\. Peerless

**2.02 [FANS]{.underline}**

> A. Provide fans that are factory fabricated and assembled, factory
> tested, and factory finished with indicated capacities and
> characteristics.
>
> B. Fans and Shafts: Statically and dynamically balanced and designed
> for continuous operation at the maximum rated fan speed and motor
> horsepower.
>
> 1\. Fan Shaft: Turned, ground, and polished steel designed to operate
> at no more than 70 percent of the first critical speed at the top of
> the speed range of the fan\'s class.
>
> C. Belt Drives: Factory mounted, with final alignment and belt
> adjustment made after installation.
>
> 1\. Service Factor: 1.4.
>
> D. Belts: Oil-resistant, nonsparking, and nonstatic.
>
> E. Motors and Fan Wheel Pulleys: Adjustable pitch for use with motors
> through 15 horsepower (hp); fixed pitch for use with motors larger
> than 15 hp. Select pulley so that pitch adjustment is at the middle of
> the adjustment range at fan design conditions.
>
> 1\. Belt Guards: Provide steel belt guards for motors mounted on the
> outside of the fan cabinet.
>
> F. Shaft Bearings: Provide type indicated, having a median life
> \"Rating Life\" (AFBMA (L50)) of 200,000, calculated in accordance
> with AFBMA Standard 9 for ball bearings and AFBMA Standard 11 for
> roller bearings.
>
> G. Factory Finish: The following finishes are required:
>
> 1\. Sheet Metal Parts: Prime coating prior to final assembly.
>
> 2\. Exterior Surfaces: Baked-enamel finish coat after assembly.
>
> H. The following factory tests are required:
>
> 1\. Sound Power Level Ratings: Comply with AMCA Standard 301 \"Method
> for Calculating Fan Sound Ratings From Laboratory Test Data.\" Test
> fans in accordance with AMCA Standard 300 \"Test Code for Sound
> Rating.\" Fans shall be licensed to bear the AMCA Certified Sound
> Ratings Seal.
>
> 2\. Fan Performance Ratings: Establish flow rate, pressure, power, air
> density, speed of rotation, and efficiency shall be factory tested and
> ratings in accordance with AMCA Standard 210/ASHRAE Standard 51 -
> Laboratory Methods of Testing Fans for Rating.

**2.03 [VANEAXIAL FANS]{.underline}**

> A. General Description: Belt-driven vaneaxial fans consisting of fan
> wheel and housing, straightening vane section, factory-mounted motor,
> an inlet cone section, and accessories as scheduled on the Drawings.
>
> B. Housings: Steel housing, 14-gage minimum, with inlet bell and
> diffuser sections.
>
> 1\. Inlet and Outlet Connections: Outer mounting frame and companion
> flanges; inlet cone shall be welded to the fan raceway.
>
> 2\. Guide Vane Section: Integral guide vanes downstream of the fan
> wheel designed to straighten the airflow.
>
> C. Wheels: Cast-aluminum, axial-flow type, with airfoil-shaped blades
> mounted on cast-iron wheel plate keyed to shaft with solid steel key.
>
> D. Fan Hub and Blade Bearing Assemblies: Cast aluminum, machined and
> fitted with threaded bearing wells to receive blade bearing
> assemblies.
>
> 1\. Blades: Replaceable, cast aluminum; factory-mounted and balanced
> to the hub assembly.
>
> 2\. Fan Shaft: Turned, ground, and polished steel.
>
> 3\. Shaft Bearings: Grease-lubricated, pillow block type;
> ball-bearings with double-locking collars and two-piece, cast-iron
> housing.
>
> E. Belt-Drive Units: Provide enclosure around belts and sheaves.
>
> 1\. Motor Mounting: Adjustable base.
>
> 2\. Sheaves: Adjustable.
>
> 3\. Belts: Oil-resistant, nonsparking, and nonstatic.
>
> F. Accessories: The following accessories are required as indicated:
>
> 1\. Companion Flanges: Rolled-steel flanges.

**2.04 [MOTORS]{.underline}**

> A. General
>
> 1\. Apply requirements below to motors covered by this Section except
> as otherwise indicated.
>
> 2\. Motors 1 horsepower (hp) and Larger: Polyphase.
>
> 3\. Frequency Rating: 60 Hz.
>
> 4\. Voltage Rating: Determined by voltage of circuit to which motor is
> connected for the following motor voltage ratings (utilization
> voltages):
>
> a\. Motors smaller than 1 hp: 120 V circuit, 115 V - motor rating.
>
> b\. Motors 1 hp and larger: 480 V circuit, 460 V - motor rating.
>
> 5\. Service factors indicated for motors are minimum values and apply
> at frequency and utilization voltage at which motor is connected.
> Provide motors which will not operate in service factor range when
> supply voltage is within 10 percent of motor voltage rating.
>
> 6\. Provide permanent-split capacitor classification motors for
> shaft-mounted fans and capacitor start classification for belted fans.
>
> 7\. Capacity: Minimum size as indicated. If not indicated, sufficient
> to start and operate connected loads at designated speeds in indicated
> environment, and with indicated operating sequence, without exceeding
> nameplate ratings. Provide motors rated for continuous duty at 100
> percent of rated capacity.
>
> 8\. Temperature Rise: 50 degree (deg) Celsius (C) maximum temperature
> rise at 40 deg C ambient for continuous duty at full load (Class A
> Insulation).
>
> 9\. Motor Speed: Single, multiple, or variable as indicated.
>
> 10\. Motor Construction: NEMA Standard MG 1.
>
> a\. Bases: Adjustable.
>
> b\. Bearings: The following features are required:
>
> 1\) Ball or roller bearings with inner and outer shaft seals.
>
> 2\) Grease lubricated.
>
> 3\) Designed to resist thrust loading where belt drives or other
> drives produce lateral or axial thrust in motor.
>
> c\. Enclosure Type: The following features are required:
>
> 1\) Open drip-proof motors where satisfactorily housed or remotely
> located during operation.
>
> 2\) Guarded drip-proof motors where exposed to contact by employees or
> building occupants.
>
> d\. Noise rating: Quiet.
>
> e\. Nameplate: Indicate the full identification of manufacturer,
> ratings, characteristics, construction, and special features.
>
> 11\. Starters, Electrical Devices, and Wiring: Electrical devices and
> connections are specified in Division 16.
>
> B. Polyphase Motors
>
> 1\. Squirrel-cage, induction-type, general-purpose conforming to the
> following requirements except as otherwise indicated.
>
> 2\. NEMA Design Letter Designation: \"B,\" unless specifically
> designated \"C\" for high starting torque.
>
> 3\. Service Factor: 1.15.
>
> 4\. Energy Efficient Motors: Nominal efficiency equal to or greater
> than that stated in NEMA MG 1, table 12-6C for that type and rating of
> motor.
>
> 5\. Variable Speed Motors for Use With Solid-State Drives: Energy
> efficient, squirrel-cage induction, design B units with ratings,
> characteristics, and features coordinated with and approved by drive
> manufacturer.
>
> 6\. Internal Thermal Overload Protection For Motors: For motors so
> indicated, protection automatically opens control circuit arranged for
> external connection. Protection operates when winding temperature
> exceeds safe value calibrated to the temperature rating of the motor
> insulation.
>
> 7\. Bearings: Double-shielded, pre-lubricated ball bearings suitable
> for radial and thrust loading of the application, unless noted
> otherwise.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [INSPECTION]{.underline}**

> A. Inspect areas and conditions, with Installer present, for
> compliance with requirements for installation tolerances, housekeeping
> pads, and other conditions affecting performance of fans.
>
> B. Do not proceed until unsatisfactory conditions have been corrected.

**3.02 [INSTALLATION/APPLICATION/ERECTION]{.underline}**

> A. General
>
> 1\. Install fans level and plumb, in accordance with manufacturer\'s
> written instructions. Support units as described below, using the
> vibration control devices indicated. Vibration control devices are
> specified in Section 15200.
>
> 2\. Arrange installation of units to provide access space around units
> for service and maintenance.
>
> B. Connections
>
> 1\. Duct installations and connections are specified in other Division
> 15 sections. Make final duct connections with flexible connections.
>
> 2\. Electrical Connections: The following requirements apply:
>
> a\. Electrical power wiring is specified in Division 16.
>
> b\. Temperature control wiring and interlock wiring is specified in
> Section 13943.
>
> c\. Grounding: Connect unit components to ground in accordance with
> the National Electrical Code.

**3.03 [FIELD QUALITY CONTROL]{.underline}**

> A. Arrange and pay for a factory- authorized service representative to
> perform the following:
>
> 1\. Inspect the field assembly of components and installation of fans
> including ductwork and electrical connections.
>
> 2\. Prepare a written report on findings and recommended corrective
> actions.

**3.04 [ADJUSTING AND CLEANING]{.underline}**

> A. Adjust damper linkages for proper damper operation.
>
> B. Clean unit cabinet interiors to remove foreign material and
> construction dirt and dust. Vacuum clean fan wheel and cabinet.

**3.05 [COMMISSIONING]{.underline}**

> A. Provide labor, material, equipment, etc., required to facilitate
> the commissioning process. Perform forms tests and verification
> procedures required by the commissioning process when requested by the
> Commissioning Authority and directed by the General Contractor. See
> Section 15995.

**3.06 [DEMONSTRATION]{.underline}**

> A. Provide a factory-authorized service representative to start-up
> equipment, to demonstrate operation, and to train personnel.
>
> B. See Section 15995.
>
> END OF SECTION