Specifications for

PART 1 - GENERAL

1. 
   DESCRIPTION:
   

This section specifies the furnishing, installation and connection of motors for HVAC and steam generation equipment.

2. 
   RELATED WORK:
   
   1. 
      Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS: General electrical requirements common to more than one Section of Division 26.
      
   2. 
      Section 26 29 11, LOW-VOLTAGE MOTOR STARTERS: Starters, control and protection for motors.
      
   3. 
      Deleted.
      
   4. 
      Section 23 05 11, COMMON WORK RESULTS FOR HVAC.
      
   5. 
      Deleted.
      
   6. 
      Deleted.
      
   7. 
      Deleted.
      
   8. 
      Section 23 34 00, HVAC FANS.
      
   9. 
      Deleted.
      
   10. 
       Deleted.
       
   11. 
       Deleted.
       
   12. 
       Deleted.
       
   13. 
       Deleted.
       
   14. 
       Deleted.
       
   15. 
       Deleted.
       
   16. 
       Deleted.
       
   17. 
       Deleted.
       
   18. 
       Deleted.
       
   19. 
       Deleted.
       
   20. 
       Deleted.
       
   21. 
       Deleted.
       
   22. 
       Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS: Requirements for commissioning, systems readiness checklists, and training.
       
3. 
   SUBMITTALS:
   
   1. 
      In accordance with Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS, submit the following:
      
   2. 
      Shop Drawings:
      
      1. 
         Provide documentation to demonstrate compliance with drawings and specifications.
         
      2. 
         Include electrical ratings, efficiency, bearing data, power factor, frame size, dimensions, mounting details, materials, horsepower, voltage, phase, speed (RPM), enclosure, starting characteristics, torque characteristics, code letter, full load and locked rotor current, service factor, and lubrication method.
         
   3. 
      Manuals:
      
      1. 
         Submit simultaneously with the shop drawings, companion copies of complete installation, maintenance and operating manuals, including technical data sheets and application data.
         
   4. 
      Certification: Two weeks prior to final inspection, unless otherwise noted, submit four copies of the following certification to the Project Engineer:
      
      1. 
         Certification that the motors have been applied, installed, adjusted, lubricated, and tested according to manufacturer published recommendations.
         
   5. 
      Completed System Readiness Checklists provided by the Commissioning Agent and completed by the contractor, signed by a qualified technician and dated on the date of completion, in accordance with the requirements of Section 23 08 00 COMMISSIONING OF HVAC SYSTEMS.
      
4. 
   APPLICABLE PUBLICATIONS:
   
   1. 
      The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.
      
   2. 
      National Electrical Manufacturers Association (NEMA):
      

MG 1-2006 Rev. 1 2009................Motors and Generators

MG 2–2001 Rev. 1 2007...............Safety Standard for Construction and Guide for Selection, Installation and Use of Electric Motors and Generators

3. 
   National Fire Protection Association (NFPA):
   

70-2008.........................................National Electrical Code (NEC)

4. 
   Institute of Electrical and Electronics Engineers (IEEE):
   

112-04...........................................Standard Test Procedure for Polyphase Induction Motors and Generators

5. 
   American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE):
   

90.1-2007......................................Energy Standard for Buildings Except Low-Rise Residential Buildings
PART 2 - PRODUCTS

1. 
   MOTORS:
   
   1. 
      For alternating current, fractional and integral horsepower motors, NEMA Publications MG 1 and MG 2 shall apply.
      
   2. 
      All material and equipment furnished and installation methods shall conform to the requirements of Section 26 29 11, LOW-VOLTAGE MOTOR STARTERS; and Section 26 05 21, LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES (600 VOLTS AND BELOW). Provide all electrical wiring, conduit, and devices necessary for the proper connection, protection and operation of the systems. Provide premium efficiency type motors as scheduled. Unless otherwise specified for a particular application, use electric motors with the following requirements.
      
   3. 
      Deleted.
      
   4. 
      Poly-phase Motors: NEMA Design B, Squirrel cage, induction type.
      
      1. 
         Deleted.
         
   5. 
      Voltage ratings shall be as follows:
      
      1. 
         Deleted.
         
      2. 
         Three phase:
         
         1. 
            Motors connected to 208-volt systems: 200 volts.
            
         2. 
            Motors, less than 74.6 kW (100 HP), connected to 240 volt or 480 volt systems: 208-230/460 volts, dual connection.
            
   6. 
      Number of phases shall be as follows:
      
      1. 
         Motors, less than 373 W (1/2 HP): Single phase.
         
      2. 
         Motors, 373 W (1/2 HP) and larger: 3 phase.
         
      3. 
         Exceptions:
         
         1. 
            Hermetically sealed motors.
            
         2. 
            Motors for equipment assemblies, less than 746 W (one HP), may be single phase provided the manufacturer of the proposed assemblies cannot supply the assemblies with three phase motors.
            
   7. 
      Motors shall be designed for operating the connected loads continuously in a 40°C (104°F) environment, where the motors are installed, without exceeding the NEMA standard temperature rises for the motor insulation. If the motors exceed 40°C (104°F), the motors shall be rated for the actual ambient temperatures.
      
   8. 
      Motor designs, as indicated by the NEMA code letters, shall be coordinated with the connected loads to assure adequate starting and running torque.
      
   9. 
      Motor Enclosures:
      
      1. 
         Shall be the NEMA types as specified and/or shown on the drawings.
         
      2. 
         Where the types of motor enclosures are not shown on the drawings, they shall be the NEMA types, which are most suitable for the environmental conditions where the motors are being installed. Enclosure requirements for certain conditions are as follows:
         
         1. 
            Motors located outdoors, indoors in wet or high humidity locations, or in unfiltered airstreams shall be totally enclosed type.
            
         2. 
            Where motors are located in an NEC 511 classified area, provide TEFC explosion proof motor enclosures.
            
         3. 
            Where motors are located in a corrosive environment, provide TEFC enclosures with corrosion resistant finish.
            
      3. 
         Enclosures shall be primed and finish coated at the factory with manufacturer's prime coat and standard finish.
         
   10. 
       Special Requirements:
       
       1. 
          Where motor power requirements of equipment furnished deviate from power shown on plans, provide electrical service designed under the requirements of NFPA 70 without additional time or cost to the Government.
          
       2. 
          Assemblies of motors, starters, controls and interlocks on factory assembled and wired devices shall be in accordance with the requirements of this specification.
          
       3. 
          Wire and cable materials specified in the electrical division of the specifications shall be modified as follows:
          
          1. 
             Wiring material located where temperatures can exceed 71 degrees C (160 degrees F) shall be stranded copper with Teflon FEP insulation with jacket. This includes wiring on the boilers.
             
          2. 
             Other wiring at boilers and to control panels shall be NFPA 70 designation THWN.
             
          3. 
             Provide shielded conductors or wiring in separate conduits for all instrumentation and control systems where recommended by manufacturer of equipment.
             
       4. 
          Select motor sizes so that the motors do not operate into the service factor at maximum required loads on the driven equipment. Motors on pumps shall be sized for non-overloading at all points on the pump performance curves.
          
       5. 
          Motors utilized with variable frequency drives shall be rated “inverter-duty” per NEMA Standard, MG1, Part 31.4.4.2. Provide motor shaft grounding apparatus that will protect bearings from damage from stray currents.
          
   11. 
       Additional requirements for specific motors, as indicated in the other sections listed in Article 1.2, shall also apply.
       
   12. 
       Energy-Efficient Motors (Motor Efficiencies): All permanently wired polyphase motors of 746 Watts (1 HP) or more shall meet the minimum full-load efficiencies as indicated in the following table. Motors of 746 Watts or more with open, drip-proof or totally enclosed fan-cooled enclosures shall be NEMA premium efficiency type, unless otherwise indicated. Motors provided as an integral part of motor driven equipment are excluded from this requirement if a minimum seasonal or overall efficiency requirement is indicated for that equipment by the provisions of another section. Motors not specified as “premium efficiency” shall comply with the Energy Policy Act of 2005 (EPACT).
       

Minimum Premium Efficiencies Open Drip-Proof				Minimum Premium Efficiencies Totally Enclosed Fan-Cooled
Rating kW (HP)	1200 RPM	1800 RPM	3600 RPM	Rating kW (HP)	1200 RPM	1800 RPM	3600 RPM
0.746 (1)	82.5%	85.5%	77.0%	0.746 (1)	82.5%	85.5%	77.0%
1.12 (1.5)	86.5%	86.5%	84.0%	1.12 (1.5)	87.5%	86.5%	84.0%
1.49 (2)	87.5%	86.5%	85.5%	1.49 (2)	88.5%	86.5%	85.5%
2.24 (3)	88.5%	89.5%	85.5%	2.24 (3)	89.5%	89.5%	86.5%
3.73 (5)	89.5%	89.5%	86.5%	3.73 (5)	89.5%	89.5%	88.5%
5.60 (7.5)	90.2%	91.0%	88.5%	5.60 (7.5)	91.0%	91.7%	89.5%
7.46 (10)	91.7%	91.7%	89.5%	7.46 (10)	91.0%	91.7%	90.2%
11.2 (15)	91.7%	93.0%	90.2%	11.2 (15)	91.7%	92.4%	91.0%
14.9 (20)	92.4%	93.0%	91.0%	14.9 (20)	91.7%	93.0%	91.0%
18.7 (25)	93.0%	93.6%	91.7%	18.7 (25)	93.0%	93.6%	91.7%
22.4 (30)	93.6%	94.1%	91.7%	22.4 (30)	93.0%	93.6%	91.7%
29.8 (40)	94.1%	94.1%	92.4%	29.8 (40)	94.1%	94.1%	92.4%
37.3 (50)	94.1%	94.5%	93.0%	37.3 (50)	94.1%	94.5%	93.0%
44.8 (60)	94.5%	95.0%	93.6%	44.8 (60)	94.5%	95.0%	93.6%
56.9 (75)	94.5%	95.0%	93.6%	56.9 (75)	94.5%	95.4%	93.6%
74.6 (100)	95.0%	95.4%	93.6%	74.6 (100)	95.0%	95.4%	94.1%
93.3 (125)	95.0%	95.4%	94.1%	93.3 (125)	95.0%	95.4%	95.0%
112 (150)	95.4%	95.8%	94.1%	112 (150)	95.8%	95.8%	95.0%
149.2 (200)	95.4%	95.8%	95.0%	149.2 (200)	95.8%	96.2%	95.4%

13. 
    Minimum Power Factor at Full Load and Rated Voltage: 90 percent at 1200 RPM, 1800 RPM and 3600 RPM.
    

PART 3 - EXECUTION

1. 
   INSTALLATION:
   

Install motors in accordance with manufacturer’s recommendations, the NEC, NEMA, as shown on the drawings and/or as required by other sections of these specifications.

2. 
   FIELD TESTS
   
   1. 
      Perform an electric insulation resistance Test using a megohmmeter on all motors after installation, before start-up. All shall test free from grounds.
      
   2. 
      Perform Load test in accordance with ANSI/IEEE 112, Test Method B, to determine freedom from electrical or mechanical defects and compliance with performance data.
      
   3. 
      Insulation Resistance: Not less than one-half meg-ohm between stator conductors and frame, to be determined at the time of final inspection.
      
3. 
   STARTUP AND TESTING
   
   1. 
      The Commissioning Agent will observe startup and contractor testing of selected equipment. Coordinate the startup and contractor testing schedules with Project Engineer and Commissioning Agent. Provide a minimum of 7 days prior notice.
      
4. 
   COMMISSIONING
   
   1. 
      Provide commissioning documentation in accordance with the requirements of Section 23 08 00 – COMMISSIONING OF HVAC SYSTEMS for all inspection, start up, and contractor testing required above and required by the System Readiness Checklist provided by the Commissioning Agent.
      
   2. 
      Components provided under this section of the specification will be tested as part of a larger system. Refer to Section 23 08 00 – COMMISSIONING OF HVAC SYSTEMS and related sections for contractor responsibilities for system commissioning.
      
5. 
   DEMONSTRATION AND TRAINING
   
   1. 
      Provide services of manufacturer’s technical representative for four hours to instruct VA personnel in operation and maintenance of units.
      
   2. 
      Submit training plans and instructor qualifications in accordance with the requirements of Section 23 08 00 – COMMISSIONING OF HVAC SYSTEMS.
      

- - - E N D - - -

SECTION 23 05 41

NOISE AND VIBRATION CONTROL FOR

HVAC PIPING AND EQUIPMENT
PART 1 - GENERAL

1. 
   DESCRIPTION
   

Noise criteria, seismic restraints for equipment, vibration tolerance and vibration isolation for HVAC and plumbing work.

2. 
   RELATED WORK
   
   1. 
      Deleted.
      
   2. 
      Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL COMPONENTS: Seismic requirements for non-structural equipment
      
   3. 
      Section 23 05 11, COMMON WORK RESULTS FOR HVAC and STEAM GENERATION: General mechanical requirements and items, which are common to more than one section of Division 23.
      
   4. 
      Deleted.
      
   5. 
      Deleted.
      
   6. 
      Deleted.
      
   7. 
      SECTION 23 05 93, TESTING, ADJUSTING, and BALANCING FOR HVAC: requirements for sound and vibration tests.
      
   8. 
      Deleted.
      
   9. 
      Deleted.
      
   10. 
       SECTION 23 34 00, HVAC FANS: sound and vibration isolation requirements for fans.
       
   11. 
       Deleted.
       
   12. 
       Deleted.
       
   13. 
       Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS: Requirements for commissioning, systems readiness checklists, and training.
       
3. 
   QUALITY ASSURANCE
   
   1. 
      Refer to article, QUALITY ASSURANCE in specification Section 23 05 11, COMMON WORK RESULTS FOR HVAC and STEAM GENERATION.
      
   2. 
      Noise Criteria:
      
      1. 
         Noise levels in all 8 octave bands due to equipment and duct systems shall not exceed following NC levels:
         

TYPE OF ROOM	NC LEVEL
Laboratories (With Fume Hoods)	45 to 55
SPD (Decontamination and Clean Preparation)	45
X-Ray and General Work Rooms	40

1. 
   For equipment which has no sound power ratings scheduled on the plans, the contractor shall select equipment such that the fore-going noise criteria, local ordinance noise levels, and OSHA re-quirements are not exceeded. Selection procedure shall be in accordance with ASHRAE Fundamentals Handbook, Chapter 7, Sound and Vibration.
   
2. 
   An allowance, not to exceed 5db, may be added to the measured value to compensate for the variation of the room attenuating effect between room test condition prior to occupancy and design condition after occupancy which may include the addition of sound absorbing material, such as, furniture. This allowance may not be taken after occupancy. The room attenuating effect is defined as the difference between sound power level emitted to room and sound pressure level in room.
   
3. 
   In absence of specified measurement requirements, measure equipment noise levels three feet from equipment and at an elevation of maxi- mum noise generation.
   
1. 
   Seismic Restraint Requirements:
   
   1. 
      Equipment:
      
      1. 
         All mechanical equipment not supported with isolators external to the unit shall be securely anchored to the structure. Such mechanical equipment shall be properly supported to resist a horizontal force of 20 percent of the weight of the equipment furnished.
         
      2. 
         All mechanical equipment mounted on vibration isolators shall be provided with seismic restraints capable of resisting a horizontal force of 50 percent of the weight of the equipment furnished.
         
   2. 
      Deleted.
      
   3. 
      Ductwork: Refer to specification Section 23 31 00, HVAC DUCTS AND CASINGS.
      
2. 
   Allowable Vibration Tolerances for Rotating, Non-reciprocating Equipment: Not to exceed a self-excited vibration maximum velocity of 5 mm per second (0.20 inch per second) RMS, filter in, when measured with a vibration meter on bearing caps of machine in vertical, horizontal and axial directions or measured at equipment mounting feet if bearings are concealed. Measurements for internally isolated fans and motors may be made at the mounting feet.
   
1. 
   SUBMITTALS
   
   1. 
      Submit in accordance with specification Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES.
      
   2. 
      Manufacturer's Literature and Data:
      
      1. 
         Vibration isolators:
         
         1. 
            Floor mountings
            
         2. 
            Hangers
            
         3. 
            Snubbers
            
         4. 
            Thrust restraints
            
      2. 
         Bases.
         
      3. 
         Seismic restraint provisions and bolting.
         
      4. 
         Deleted.
         
   3. 
      Isolator manufacturer shall furnish with submittal load calculations for selection of isolators, including supplemental bases, based on lowest operating speed of equipment supported.
      
   4. 
      Seismic Requirements: Submittals are required for all equipment anchors, supports and seismic restraints. Submittals shall include weights, dimensions, standard connections, and manufacturer's certification that all specified equipment will withstand seismic Lateral Force requirements. Seismic rating is low: Ss = 0.180, S1= 0.061.
      
2. 
   APPLICABLE PUBLICATIONS
   
   1. 
      The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.
      
   2. 
      American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE):
      

2009 .............................................Fundamentals Handbook, Chapter 7, Sound and Vibration

3. 
   American Society for Testing and Materials (ASTM):
   

A123/A123M-09..........................Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

A307-07b......................................Standard Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile Strength

D2240-05(2010)............................Standard Test Method for Rubber Property Durometer Hardness

4. 
   Manufacturers Standardization (MSS):
   

SP-58-2009...................................Pipe Hangers and Supports-Materials, Design and Manufacture

5. 
   Occupational Safety and Health Administration (OSHA):
   

29 CFR 1910.95............................Occupational Noise Exposure

6. 
   American Society of Civil Engineers (ASCE):
   

ASCE 7-10 ...................................Minimum Design Loads for Buildings and Other Structures.

7. 
   American National Standards Institute / Sheet Metal and Air Conditioning Contractor’s National Association (ANSI/SMACNA):
   

001-2008.......................................Seismic Restraint Manual: Guidelines for Mechanical Systems, 3rd Edition.

8. 
   International Code Council (ICC):
   

2009 IBC.......................................International Building Code.

9. 
   Department of Veterans Affairs (VA):
   

H-18-8 2010..................................Seismic Design Requirements.