Specifications Fresno Mechanical 012510.docx

Fresno Federal Courthouse Concept Design and Specifications Mechanical and Conrols Upgrade Projects January 18, 2010

Mechanical & Controls Upgrade Projects Scope of Work, Concept Designs & Specifications

Fresno Federal Courthouse 2500 Tulare Street Fresno, CA 93721

Prepared For:

General Services Administration

Mark Levi Buildings Services Branch 450 Golden Gate Ave. 4E 9PMFT San Francisco, CA 94102

Prepared By:

Jonathan Soper, Principal

January 18, 2010 Report No. 0408.009 Copyright © 2009 GSA. All rights reserved.

BAS Re-commissioning Plan-Energy Evaluation Franchise Tax Building Phase I & II February 27, 2002 Commercial Office Building Energy Audit 120 Montgomery Street, San Francisco Pacific Gas & Electric Company August 29, 2003 For questions or comments pertaining to this report, contact Enovity Inc. Reproduction or distribution of the whole, or any part of the contents of, this document without permission of GSA is prohibited. Neither Enovity nor any of its employees makes any warranty, express or implied, or assumes any legal liability of responsibility for the accuracy, completeness, or usefulness of any data, information, method, product or process disclosed in this document, or represents that its use will not infringe any privately-owned rights, including but not limited to, patents, trademarks or copyrights.

© 2009 Enovity, Inc. All Rights Reserved 2 Preface Site Information Fresno Federal Courthouse: 2500 Tulare Street, Fresno, CA. 93721 Enovity Personnel This work was performed by the following Enovity team members:

Client Personnel The following personnel were involved in the audit work:

Table of Contents

BAS Re-commissioning Plan-Energy Evaluation Franchise Tax Building Phase I & II February 19, 2002

© 2009 Enovity, Inc. All Rights Reserved

© 2009 Enovity, Inc. All Rights Reserved specifications

GENERAL

SCOPE OF WORK

A. This is a design/build project. The Contractor shall be the engineer-of-record as well as the contractor of record and responsible for all required work.

B. Work Included:

1. Demolition; all old equipment that is replaced shall be removed from the site.

2. Rigging

3. New equipment

4. New and/or expanding existing concrete curbs and bases as required

5. Temporarily removing then repairing doors, wall, or roof sections for access as required

6. Seismic restraints

7. Electrical power wiring, disconnects, etc. for new equipment

8. Test and balance

9. Operator training

10. Overtime labor if required

11. All required permit fees

REFERENCE STANDARDS

A. Requirements of Regulatory Agencies:

1. Nothing in Drawings or Specifications shall be construed to permit Work not conforming to applicable laws, ordinances, rules, regulations.

2. When drawings or Specifications exceed requirements of applicable laws, ordinances, rules and regulations, comply with documents establishing the more stringent requirement.

3. Applicable codes include the current version of those listed below, in addition to others specified in individual sections:

a. IMC – International Mechanical Code

b. IPC - International Plumbing Code

c. NFPA – National Fire Protection Association

d. NEC – National Electrical Code

4. If any of above requirements is in conflict with one another, or with Specifications' requirements, the most stringent requirement shall govern. Where codes are silent on an issue, NFPA Standards shall apply.

B. Published specifications, standards, tests or recommended method of trade, industry or governmental organizations as listed below apply to all work in this Section:

1. AABC - Associated Air Balance Council

2. ADC - Air Diffuser Balance Council

3. AMCA - Air Moving and Conditioning Association

4. ANSI - American National Standards Institute

5. ARI - Air Conditioning and Refrigeration Institute

6. ASHRAE - American Society of Heating, Refrigeration and Air Conditioning Engineers

7. ASME - American Society of Mechanical Engineers

8. ASTM - American Society for Testing and Materials

9. ETL - Intertek Semko (Formerly Electrical Testing Laboratories)

10. IEEE - Institute of Electrical and Electronic Engineers

11. NEMA - National Electrical Manufacturer's Association

12. NFPA - National Fire Protection Association

13. NUSIG - National Uniform Seismic Installation Guidelines

14. SMACNA - Sheet Metal and Air Conditioning Contractors National Association

15. UL - Underwriters' Laboratories.

C. Industry standards and manufacturers' recommendations, diagrams or requirements shall be strictly adhered to for installation of materials and equipment.

D. CAD drawings must comply with GSA CAD Standards (copy available on request).

E. PBS P100 (available at www.gsa.gov/p100) applies as applicable to the scope of work of the project.

QUALITY ASSURANCE

A. All equipment and accessories to be the product of a manufacturer regularly engaged in its manufacture.

B. All items of a given type shall be the products of same manufacturer.

C. Supply all equipment and accessories new and free from defects.

D. Supply all equipment and accessories in compliance with the applicable standards listed in Paragraph 5.1.1.3 with all applicable national, state and local codes.

DEFINITIONS

A. Definitions of term used in Section 5 may differ from those given in general and supplementary conditions and take precedence over them.

B. “Provide": to supply, install and connect up complete and ready safe and regular operation of particular work referred to unless specifically noted.

C. "Install": to erect, mount and connect complete with related accessories.

D. "Supply": to purchase, procure, acquire and deliver complete with related accessories.

E. "Work": labor, materials, equipment, apparatus, controls, accessories, and other items required for proper and complete installation.

F. "Piping": pipe, tube, fittings, flanges, valves, controls, strainers, hangers, supports, unions, traps, drains, insulation, and related items.

G. "Wiring": raceway, fittings, wire, boxes and related items.

H. "Concealed": embedded in masonry or other construction, installed in furred spaces, within double partitions or hung ceilings, in trenches, in crawl spaces, or in enclosures.

I. "Exposed": not installed underground or "concealed" as defined above.

J. "Indicated," "shown" or "noted": as indicated, shown or noted on drawings or specifications.

K. "Similar" or "equal": of base bid manufacture, equal in materials, weight, size, design, and efficiency of specified product, conforming to PART 2 Materials.

L. "Reviewed," "satisfactory," or "directed": as reviewed, satisfactory, or directed by or to Architect.

M. "Motor Controllers": manual or magnetic starters (with or without switches), individual pushbuttons or hand-off-automatic (HOA) switches controlling the operation of motors.

N. "Control or Actuating Devices": automatic sensing and switching devices such as thermostats, pressure, float, electro-pneumatic switches and electrodes controlling operation of equipment.

DESIGN DOCUMENTS

A. An employee or sub-consultant of the HVAC Contractor shall serve as Engineer-of-Record.

B. Design documents: All design drawings shall be created using AutoCAD, version 2000 or higher, or compatible format, in conformity with GSA CAD Standards. Include, at minimum, the following:

1. Equipment schedules

2. See Section 3 for requirements by project C. Contractor shall provide 50% CDs, 95% CDs and 100% CDs for review by Government.

D. It is expressly forbidden to email any drawings or submittals.

SUBMITTALS

A. Schedule:

1. Allow 10 working days for approval, unless Government agrees to accelerated schedule.

B. Submit drawings, product data, samples and certificates of compliance required as hereinafter specified in this Section.

C. Submission Procedure:

1. Initial submittal:

a. Submit two electronic copies of product data in word-searchable format such as Adobe pdf. Paper copies will not be accepted.

b. Submit five (5) copies of drawings in hard copy and one (1) copy in soft copy; in Autocad and pdf format.

b. Submittal will be reviewed and comments returned to Contractor

2. Resubmission:

a. Make any corrections or change in submittals as required

b. Resubmit for review in electronic format described above until no exceptions are taken

c. Resubmit for review two (2) copies of drawings and (1) soft copy; in Autocad and pdf format.

c. The cost of review of submittals after first resubmittal will be borne by Contractor at billing rates determined by Government.

3. Final approval: Once submission is accepted, Contactor shall print two bound sets of submittals for Owner and additional sets for coordination with other trades, as required by the General Contractor, and shall print two hard copies of drawings. Five (5) hard copies of final 100% CDs shall be provided.

D. Contents of Submittals

1. HVAC Equipment Submittals

a. Manufacturer's name and model number

b. All information required to completely describe materials and equipment and to indicate compliance with drawings and specifications, including, but not limited to:

1) A schedule, for all items of the same type shall be supplied. The schedule shall include the manufacturer, the model, size, specific information that makes that item unique, the service of the item, the system served by the item.

2) Physical Data, as applicable:

a) Dimensions

b) Weight

c) Finishes and colors

3) Performance Data, as applicable:

a) Rated capacities

b) Performance curves

c) Operating temperature and pressure

4) Electrical and plumbing requirements

5) Flow and wiring diagrams as applicable

6) Description of system operation

c. All other pertinent information requested in individual sections

2. Test, Adjust, and Balance (TAB) Submittal

a. All test and report forms that will be submitted for the final TAB report

b. A written description of the balance procedures

c. Submit at least 30 days prior to any TAB work.

E. Operating Instructions & Maintenance Manuals

1. Before requesting acceptance of work, submit two sets for review by Government.

2. After review and making corrections noted, furnish five (5) printed and bound sets. Assemble in chronological order following alphanumeric system used in specification, in heavy three-ring binder.

3. O&M manual shall include all submittal data submitted herein above, as installed. The intent of this section is that a single document contains all relevant information about each piece of equipment.

4. In addition to the submittal data, the O&M manual shall also include the following information:

a. Manufacturer's name, model number, service manual, spare-parts list, and descriptive literature for all components

b. Installation instructions

c. Maintenance instructions

d. Wiring diagrams

e. Listing of possible breakdown and repairs

f. Instruction for starting, operation and programming

g. Detailed and simplified one line, color coded flow and wiring diagram

h. Name, address and phone number of contractors equipment suppliers and service agencies

i. Guarantee period, including start and end period

j. Start up test readings, dated and signed by testing technician F. Record Drawings

1. Update design/shop AutoCAD drawings to "as- built" conditions:

a. Fully incorporate all revisions made by all crafts in course of work.

b. Include all field changes, adjustments, variances, substitutions and deletions, including all Change Orders

c. Exact location, type, and function of concealed valves, dampers, controllers, piping, air vents and piping drains

d. Exact size, elevations, and horizontal location of piping and ducts

e. Revise equipment schedules to reflect all substitutions

f. Complete drawings of all HVAC systems, both new and existing

2. Submit five (5) hard copies for approval and one (1) soft copy in Autocad and pdf format.

3. Once approved:

a. Provide five (5) sets of hard copies and one (1) original CAD files on portable media (e.g. CD) including all referenced background drawings.

b. Load complete CAD files onto the control system front end computer. (Viewing software by others.)

c. Provide five full size sets of drawings on bond paper.

COMPLETION REQUIREMENTS

A. Until the documents required in this section are submitted and approved, the system will not be considered “accepted” and final payment to contractor will not be made.

B. O&M Manual;

C. Record Drawings:

D. Training;

E. Warranty: Provide written guarantee and warranty documents for all equipment and systems, including the start and end date for each.

SCHEDULE OF WORK

A. Design and construction work to be approved by Owner prior to start.

1. Expected start date (award of contract): April 2010

2. Desired end date: within 4 months of award of contract B. All HVAC systems must remain operational during construction.

C. Include any charges, including overtime wages, required to perform work within scheduling criteria specified above.

GUARANTEE

A. The Contractor shall guarantee the following:

1. All new materials, new equipment, apparatus and workmanship shall be free of defective materials and faulty workmanship.

2. All equipment and material will produce the results specified.

3. All systems have been fully tested, adjusted, balanced, and commissioned.

B. The HVAC Contractor shall furnish written guarantee to replace all defective work, materials, and services furnished under this Section, at no additional cost to the Owner, for the warranty period C. The warranty period shall be one (1) year from date of filing of Notice of Completion or beneficial system usage, whichever comes first.

D. The Owner reserves the right to make temporary repairs as necessary to keep equipment in operating condition without voiding the guarantees or relieving responsibility during the guarantee period.

E. The warranty shall not include:

1. Standard maintenance items

2. Repairs or replacement of equipment damaged as a result of misuse, abuse, or lack of proper maintenance.

3. Existing equipment and materials not provided by this contract.

DESIGN CRITERIA

A. Sound and Vibration Control:

1. Vibration in walls and floors in tenant occupied spaces shall not be perceivable to the touch in any tenant occupied space.

2. The maximum NC level in occupied spaces due to new equipment shall be NC 40 in open offices, corridors, and other non-sensitive spaces, and shall be NC 35 otherwise

SECURITY CLEARANCE

A. Contractor must secure a federal security clearance for each individual who will be working on the project

MATERIALS

VIBRATION ISOLATION & SUPPORTS

A. Manufacturers

1. Vibration Isolation:

a. Mason Industries, Inc.

b. Kinetics Noise Control, Inc.

c. M.L. Saussé & Co. (Vibrex).

d. Or equal

2. Seismic Restraints:

a. Hangers and Snubbers: Any manufacturer who can verify compliance with SMACNA standards and the California Building Code

b. Strut: Channel Framing: Any manufacturer who can verify compliance with the CBC standards

c. Anchors: Drill in, wedge type: Any manufacturer within the ICBO standards approved for seismic

d. Snubbers: Any manufacturer within the CBC standards B. Vibration Isolator Types:

1. Housed isolation

2. Size for weight of unit and associated items that hang from the springs

3. Spring isolators shall incorporate following:

a. All springs to be single coil steel with minimum spring coil outer diameter 0.8 of loaded operating height

b. Horizontal spring stiffness within 0.8 to 1.25 times rated vertical spring stiffness

c. Corrosion resistance where exposed to corrosive environment with:

1) Springs neoprene coated

2) Hardware cadmium plated

3) All other metal parts hot dip galvanized

d. Reserve deflection (from loaded to solid height) of 50 percent of rated deflection

e. Minimum 6mm (1/4") thick neoprene acoustical base pad on underside, unless designated otherwise

f. Designed and installed so that ends of springs remain parallel; neoprene cups not acceptable

g. Noise pads of ½ inch or 1 inch thickness below the spring base to reduce the chance that the springs shall be resonant with equipment forcing frequencies or support structure natural frequencies

h. Leveling device

i. Where operating weight differs from installed weight provide built-in adjustable limit stops to prevent equipment rising when weight is removed. Stops shall not be in contact during normal operation C. Anchors, Inserts and Fasteners:

1. All anchors and inserts shall be installed according to the CBC standards

2. Do not use any anchor or insert in concrete which does not have a signed structurally engineered design value based on its installed application and one of the following:

a. ICBO evaluation report

b. Lab test report verifying compliance

3. Powder Actuated Anchors:

a. Hardened steel stud with threaded shank; size of shank to match hanger rod size

b. Use only with non-shock loads

c. Maximum load safety factors:

1) Maximum anchor load: 100 pounds

2) Static loads - 5

3) Vibratory loads - 8-10789

d. For concrete and steel; not to be used for light weight concrete, brick or concrete block e.10% testing rate required, testing by contractor

4. All over-head concrete anchors or inserts shall be selected to comply with the ICBO report or CBC table for the anchor or insert

5. Torque testing of anchors shall be allowed to verify compliance of anchor installation. However, torque testing shall not justify usability of anchor. Only load or pull testing shall be allowed to justify usability of anchors. Failure of torque shall constitute failure of anchor.

CHILLER VARIABLE FREQUENCY DRIVES (VFDs)

0. SUMMARY

1. Section includes requirements for separately enclosed, pre-assembled, combination Variable Frequency Drives (VFD), rated 600V and less. These VFDs shall be used for speed control of three existing three-phase, York YT Centrifugal Chillers.

A. DEFINITIONS

1. BAS: Building automation system.

2. CE: Conformite Europeene (European Compliance).

3. CPT: Control power transformer.

4. EMI: Electromagnetic interference.

5. IGBT: Insulated-gate bipolar transistor.

6. LAN: Local area network.

7. LED: Light-emitting diode.

8. MCP: Motor-circuit protector.

9. NC: Normally closed.

10. NO: Normally open.

11. OCPD: Overcurrent protective device.

12. PID: Control action, proportional plus integral plus derivative.

13. PWM: Pulse-width modulated.

14. RFI: Radio-frequency interference.

15. VFD: Variable-frequency drive.

16. VSD: Variable speed drive (same as VFD).

B. REFERENCE CODES AND STANDARDS

All work specified herein shall conform to or exceed the applicable requirements of the referenced portions of the latest editions of the following publications to the extent that the provisions thereof are not in conflict with other provisions of these specifications:

1. Codes.

2. Commercial Standards

c. ANSI/UL 467 Grounding and Bonding Equipment, Safety Standard For

d. IEEE 519 Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems

e. IEEE 1100 Powering and Grounding Sensitive Electronic Equipment (Emerald Book) NEMA MG-1998 Motors and Generators. Standard for

f. NEMA ICS7.1 1995 Construction and Guide to Selection, Installation, and Operation of Adjustable Frequency Drives Systems, Safety Standards for

g. UL 508A Industrial Control Equipment, Standard for

h. ISA 5.4 Instrument Loop Diagrams, Standard for

i. UBC Uniform Building Code

C. SUBMITTALS

1. Product Data for each type and rating of VFD indicated.

2. For LEED Credit EA 5 Submittals: Product Data for continuous metering equipment for energy consumption.

3. Shop Drawings for each VFD:

a) Layout drawings of the VFD system that include all cabinet or enclosure dimensions, access details, and weights. Drawings shall include the physical arrangement of door mounted devices located on the VFD enclosure.

b) Complete single-line diagrams indicating all devices comprising the VFD system including, but not limited to, circuit breakers, motor circuit protectors, contactors, instrument transformers, meters, relays, timers, control devices, and other equipment comprising the complete system. Electrical ratings of all equipment and devices shall be clearly indicated on these single-line diagrams.

c) Control diagrams, schematic and interconnection wiring diagrams of all electrical work, including terminal blocks and identification numbers, wire numbers and wire colors.

d) Logic diagrams identifying system control logic.

e) Manufacturer’s drawings.

f) Manufacturer's operation instructions.

g) Performance, control and protection data with specified features clearly shown.

h) Operating and monitoring devices with specified features clearly indicated.

i) Start-up, operation and maintenance manuals; spare parts list and field testing procedures.

j) Other appropriate data.

4. Product certificates.

5. Field quality-control reports.

6. Operation and maintenance data.

D. ELECTRICAL NOISE CRITERIA

1. Voltage and current distortion generated by VFD and attenuation devices, measured at the point of common coupling shall not exceed the criteria of IEEE Standard 519-1992.

2. Contractor is responsible for cost of all equipment required to meet IEEE-519-1992, General Category. Equipment which can be provided includes input line reactors, DC bus reactors and harmonic filters.

E. WARRANTY

1. Include 5 year parts and labor warranty beginning at start-up of the equipment.

PRODUCTS

F. MANUFACTURED UNITS

1. Manufacturer: York manufactured Optispeed VFD or equal.

2. Application: Provide, install and configure two large horse power VFDs each designed to serve one of the two existing York YT centrifugal chillers at the new Federal Court House Building at 2500 Tulare Street, Fresno CA 93721. As an alternate chiller 1 (200 ton) shall be retrofitted with a VFD.

3. VFD Description: Factory packaged Variable Frequency Drive in a NEMA-1 enclosure, with integral disconnecting means and overcurrent and overload protection; arranged to provide self-protection and variable-speed control of a three-phase centrifugal chiller induction motor by adjusting output voltage and frequency.

G. Fabrication:

1. VFD shall be variable torque, solid state, microprocessor based control, modular design.

2. VFD components shall be factory mounted and wired in NEMA 1 enclosure with lock.

3. Circuitry shall be plug-in, plug-out modular. Printed circuit boards shall have protective coating to reduce corrosion.

4. Unit shall conform to NEMA and NEC standards and be CSA, UL or ETL listed. Control circuitry shall be electrically isolated from power circuitry.

5. Output Rating: Three-phase; 10 to 60 Hz, with voltage proportional to frequency throughout voltage range; maximum voltage equals input voltage.

H. Unit Operating Requirements:

1. Input AC Voltage Tolerance: Plus 10 and minus 10 percent of VFD input voltage rating.

2. Input AC Voltage Unbalance: Not exceeding 5 percent.

3. Input Frequency Tolerance: Plus or minus 3 percent of VFD frequency rating.

4. Minimum Displacement Primary-Side Power Factor: 95 percent under any load or speed condition.

5. Ambient Temperature Rating: Not less than 14 deg F (minus 10 deg C) and not exceeding 104 deg F (40 deg C).

6. Ambient Storage Temperature Rating: Not less than minus 4 deg F (minus 20 deg C) and not exceeding 140 deg F (60 deg C)

7. Humidity Rating: Less than 95 percent (non-condensing).

8. Altitude Rating: Not exceeding 3300 feet (1005 m).

9. Overload Capability: 1.1 times the base load current for 60 seconds; minimum of 1.8 times the base load current for three seconds.

10. Starting Torque: Minimum 100 percent of rated torque from 3 to 60 Hz.

11. Speed Regulation: Plus or minus 5 percent.

12. Internal Adjustability Capabilities:

13. Minimum Speed: 5 to 25 percent of maximum rpm.

14. Maximum Speed: 80 to 100 percent of maximum rpm.

15. Self-Protection and Reliability Features:

16. Input transient protection by means of surge suppressors to provide three-phase protection against damage from supply voltage surges 10 percent or more above nominal line voltage.

17. Loss of Input Signal Protection.

18. Under- and overvoltage trips.

19. Inverter overcurrent trips.

20. VFD and Motor Overload/Overtemperature Protection

21. Instantaneous line-to-line and line-to-ground overcurrent trips.

22. Loss-of-phase protection.

23. Reverse-phase protection.

24. Short-circuit protection.

25. Protection Features: Power circuits shall be protected by electronic protection circuits. Electronic protection circuits shall provide orderly shutdown without blowing fuses and prevent component loss under the following abnormal conditions.

26. Inverter overcurrent and overvoltage.

27. Loss of phase and low/loss of system voltage.

28. Ground fault.

29. Loss of DC link.

30. Motor overload

31. Over-temperature.

32. Integral Input Disconnecting Means and OCPD with pad-lockable, door-mounted handle mechanism.

I. Controls and Indication CONTROLS

1. Status Lights: Manufacturer’s standard

2. Panel-Mounted Operator Station: Manufacturer's standard front-accessible.

3. Historical Logging Information and Displays.

4. Indicating Devices: Manufacturer’s standard.

5. Control Signal Interfaces:

6. Provide York chiller control and monitoring module to control the chiller, VFD speed, chiller guide vanes and safety devices based on inputs from the chiller. Reuse of the existing York chiller controller is acceptable if upgrades are available to accommodate the new VFD

7. Chiller controllers other than York will require owner approval.

8. Chiller controller data shall include:

Input of Start/stop, Input set-point specifying the desired speed in % or Hz, Input set-point specifying the desired chilled water supply temperature set-point.

Input set-point specifying chiller demand limit set-point.

Input a manual speed set point, also in % or Hz, from a potentiometer or keypad mounted on the VFD’s control panel.

Monitor output of all available chiller operating parameters and fault or alarm conditions. Including but not limited to entering and leaving water temperatures for the evaporator and condenser, temperatures and pressures of the refrigerant for the evaporator and condenser, % electric demand or % amps, flow is proven for the evaporator and condenser, safeties and fault conditions.

The data input and output packets shall be compatible with the existing Invensys building automation system protocol.

9. Provide adjustable minimum and maximum speed settings (0 100%) for both auto and manual mode. Initial minimum setting shall be 30%.

10. Provide adjustable automatic reset for fault trips, except overload and over-current. After selected number of unsuccessful restart attempts, drive shall be shut down. Number of restart attempts and time interval between resets shall be selective.

11. All controllers shall have a communication port for connections with devices using the MS/TP protocol.

12. Provide communication with VFD via Invensys integration.

13. When unit shuts down due to power outage, unit shall be capable of being restarted manually or automatically.

14. Provide critical frequency avoidance circuit with at least 2 field adjustable bands to avoid operation at speeds which cause excessive vibration in driven equipment.

15. Provide isolated ungrounded output signal to indicate drive percent of speed or drive frequency.

J. OPERATING AND MONITORING DEVICES

1. Manufacturer’s standard

K. QUALITY ASSURANCE

1. Complete drive assembly shall be subjected to factory heat stress test and run tested under load to verify functions specified. Test reports shall be available upon request.

2. VFD shall have a visible UL mark.

EXECUTION

0. INSPECTION

1. Visually inspect equipment and components at time of delivery. Submit report to with list of items or deficiencies to be corrected.

2. Manufacturer’s standard tests shall be performed.

0. INSTALLATION

1. Install VFD system in accordance with details, approved shop drawings and manufacturer's instructions and recommendations.

2. Provide field electrical wiring, both line and low voltage of VFD system components. Install wiring in metal conduit and in accordance with electrical sections of this specification and applicable electrical code.

3. Provide control wiring between interlocks in VFD control circuits and driven motor's disconnect switches, where such motor disconnect switches are provided.

4. Provide ground conductor in addition to conduit ground for each motor circuit

5. Do not connect ground from one unit to another unit's cabinet.

6. Use separate conduits for incoming and outgoing power conductors from each unit.

7. Use separate conduit for control wiring for each unit. Control wiring shall not occupy same conduit as power wiring.

8. Use minimum 18 gauge shielded wiring with ground for control wiring.

9. Install fuses in control circuits if not factory installed. Provide set of spare fuses."

0. IDENTIFICATION

1. Identify VFDs, components, and control wiring.

2. Identify field-installed conductors, interconnecting wiring, and components; provide warning signs.

3. Label each VFD with engraved nameplate.

4. Label each enclosure-mounted control and pilot device.

0. START-UP

1. Perform tests and inspections.

2. Inspect VFD, wiring, components, connections, and equipment installation.

3. Test insulation resistance for each VFD element, component, connecting motor supply, feeder, and control circuits.

4. Test continuity of each circuit.

5. Verify that voltages at VFD locations are within 10 percent of motor nameplate rated voltages. If outside this range for any motor, notify Owner before starting the motor(s).

6. Test each motor for proper phase rotation.

7. Perform each electrical test and visual and mechanical inspection stated in NETA Acceptance Testing Specification. Certify compliance with test parameters.

8. Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance; otherwise, replace with new units and retest.

9. Test and adjust controls, remote monitoring, and safeties. Replace damaged and malfunctioning controls and equipment.

10. VFDs will be considered defective if they do not pass tests and inspections.

11. Perform start-up of VFD in accordance with procedures as defined by manufacturer for proper operation.

12. Completion of the installation, final inspection, receipt of the test and as-built documentation, and successful performance of the system for a three week period shall constitute acceptance of the system.

0. DEMONSTRATION

13. Train Owner's maintenance personnel to adjust, operate, reprogram, and maintain VFDs.

MOTOR VARIABLE FREQUENCY DRIVES

A. General Section includes requirements for separately enclosed, pre-assembled, combination Variable Frequency Drives (VFD), rated 600V and less. These VFDs shall be used for speed control of three-phase motors.

B. Definitions BAS: Building automation system.

CE: Conformite Europeene (European Compliance).

CPT: Control power transformer.

EMI: Electromagnetic interference.

IGBT: Insulated-gate bipolar transistor.

LAN: Local area network.

LED: Light-emitting diode.

MCP: Motor-circuit protector.

NC: Normally closed.

NO: Normally open.

OCPD: Overcurrent protective device.

PID: Control action, proportional plus integral plus derivative.

PWM: Pulse-width modulated.

RFI: Radio-frequency interference.

VFD: Variable-frequency drive.

VSD: Variable speed drive (same as VFD).

C. Reference Codes and Standards All work specified herein shall conform to or exceed the applicable requirements of the referenced portions of the latest editions of the following publications to the extent that the provisions thereof are not in conflict with other provisions of these specifications:

1. Codes: NEC National Fire Protection Association (NFPA) –70 National Electrical Code (NEC)

2. CCR Title 8, Industrial Relations, Subchapter 5, Electrical Safety Orders, California Code of Regulations. National Electrical Code.

D. Commercial Standards

1. ANSI/UL 467 Grounding and Bonding Equipment, Safety Standard For

2. IEEE 519 Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems

3. IEEE 1100 Powering and Grounding Sensitive Electronic Equipment (Emerald Book) NEMA MG-1998 Motors and Generators.

4. NEMA ICS7.1 1995 Construction and Guide to Selection, Installation, and Operation of Adjustable Frequency Drives Systems,

5. UL 508A Industrial Control Equipment,

6. ISA 5.4 Instrument Loop Diagrams,

7. UBC Uniform Building Code.

E. Submittals

1. Product Data for each type and rating of VFD indicated.

2. Submit statement guaranteeing compatibility of VFDs with existing motors.

3. Shop Drawings for each VFD:

a. Layout drawings of the VFD system that include all cabinet or enclosure dimensions, access details, and weights.

b. Drawings shall include the physical arrangement of door mounted devices located on the VFD enclosure.

c. Complete single-line diagrams indicating all devices comprising the VFD system including, but not limited to, circuit breakers, motor circuit protectors, contactors, instrument transformers, meters, relays, timers, control devices, and other equipment comprising the complete system. Electrical ratings of all equipment and devices shall be clearly indicated on these single-line diagrams.

d. Control diagrams, schematic and interconnection wiring diagrams of all electrical work, including terminal blocks and identification numbers, wire numbers and wire colors.

e. Logic diagrams identifying system control logic.

f. Manufacturer’s drawings.

g. Manufacturer's operation instructions.

h. Performance, control and protection data with specified features clearly shown.

i. Operating and monitoring devices with specified features clearly indicated.

j. Start-up, operation and maintenance manuals; spare parts list and field testing procedures.

k. Other appropriate data.

l. Product certificates.

m. Field quality-control reports.

n. Operation and maintenance data.

F. Electrical Noise Criteria

1. Voltage and current distortion generated by VFD and attenuation devices, measured at the point of common coupling shall not exceed the criteria of IEEE Standard 519-1992.

2. Contractor is responsible for cost of all equipment required to meet IEEE-519-1992, General Category. Equipment which can be provided includes input line reactors, DC bus reactors and harmonic filters.

G. Warranty

1. Include 5 year parts and labor warranty beginning at start-up of the equipment.

H. Manufactured Units

1. Manufacturer: ABB or Danfoss VLT 2800 Series; or approved equal.

2. VFD Description: Factory packaged Variable Frequency Drive in a NEMA-1 enclosure, with integral disconnecting means and overcurrent and overload protection; arranged to provide self-protection and variable-speed control of a three-phase motor by adjusting output voltage and frequency.

3. Fabrication:

a. VFD shall be variable torque, solid state, microprocessor based control, modular design.

b. VFD components shall be factory mounted and wired in NEMA 1 enclosure with lock.

c. Circuitry shall be plug-in, plug-out modular. Printed circuit boards shall have protective coating to reduce corrosion.

d. Unit shall conform to NEMA and NEC standards and be CSA, UL or ETL listed. Control circuitry shall be electrically isolated from power circuitry.

e. Output Rating: Three-phase; 10 to 60 Hz, with voltage proportional to frequency throughout voltage range; maximum voltage equals input voltage.

f. Unit Operating Requirements:

1) Voltage and power range: 3-phase, 380 to 480 V + 15% (0.75 to 355 kW)

2) Frequency: 48 to 63 Hz

3) Power factor: 0.98

4) Rated currents: Current at ambient temperature of -15 to +40 deg C; rated output current, no de-rating needed. Current at ambient temperature of + 40 to + 50 deg C; de-rating of less than 1%/deg C above 40 deg C.

5) Ambient Temperature Rating: -15 to 50 deg C (no frost allowed)

6) Ambient Storage Temperature Rating: -40 to 70 deg C

7) Humidity Rating: Less than 95 percent (non-condensing).

8) Altitude Rating: Rated current at 0 to 1000 m, reduce by 1% per 100 m over 1000 to 2000 m. Over 2000 m consult manufacturer.

9) Overload Capability: 1.1 times the rated load current for 60 seconds every 10 minutes through the entire speed range.

10) Protection classes: IP21 for wall mounted and free standing units or IP54 for wall mounted units

11) 3 analog inputs: selectable for current, kW, voltage and speed

12) Voltage signal: 0(2) to 10 V, Rin > 312 k ohms single-ended

13) Current signal: 0(4) to 20 mA, Rin = 100 ohms single-ended

14) Potentiometer reference value: 10 V + 2% max. 10 mA, R < 10 k ohms

15) Communication: Protocols as standard (RS 485); BACnet MS/TP, Modbus RTU, N2 and FLN. Available as plug-ins options: BACnet/IP router, Lonworks, Ethernet etc. Available as external options: remote access and diagnostics module.

16) Internal Adjustability Capabilities:

Minimum Speed: 5 to 25 percent of maximum rpm.

Maximum Speed: 80 to 100 percent of maximum rpm.

g. Self-Protection and Reliability Features:

h. Input transient protection by means of surge suppressors to provide three-phase protection against damage from supply voltage surges 10 percent or more above nominal line voltage.

1) Loss of Input Signal Protection.

2) Under- and overvoltage trips.

3) Inverter overcurrent trips.

4) VFD and Motor Overload/Overtemperature Protection

5) Instantaneous line-to-line and line-to-ground overcurrent trips.

6) Loss-of-phase protection.

7) Reverse-phase protection.

8) Short-circuit protection.

i. Protection Features:

j. Power circuits shall be protected by electronic protection circuits. Electronic protection circuits shall provide orderly shutdown without blowing fuses and prevent component loss under the following abnormal conditions.

k. Inverter overcurrent and overvoltage.

l. Loss of phase and low/loss of system voltage.

m. Ground fault.

n. Loss of DC link.

o. Motor overload

p. Over-temperature.

q. Integral Input Disconnecting Means and OCPD with pad-lockable, door-mounted handle mechanism.

I. Controls and Indication

1. Status Lights: Manufacturer’s standard

1. Panel-Mounted Operator Station: Manufacturer's standard front-accessible.

2. Indicating Devices: Manufacturer’s standard.

3. Control Signal Interfaces:

4. Provide BACnet card.

5. Provide adjustable minimum and maximum speed settings (0 100%) for both auto and manual mode. Initial minimum setting shall be 10%.

6. Provide adjustable automatic reset for fault trips, except overload and over-current. After selected number of unsuccessful restart attempts, drive shall be shut down. Number of restart attempts and time interval between resets shall be selective.

7. When unit shuts down due to power outage, unit shall be capable of being restarted manually or automatically.

8. Provide critical frequency avoidance circuit with at least 2 field adjustable bands to avoid operation at speeds which cause excessive vibration in driven equipment.

9. Provide isolated ungrounded output signal to indicate drive percent of speed or drive frequency.

10. Provide manual speed adjustment through keypad on VFD.

J. Operating And Monitoring Devices

2. Manufacturer’s standard.

K. Quality Assurance

3. Complete drive assembly shall be subjected to factory heat stress test and run tested under load to verify functions specified. Test reports shall be available upon request.

1. VFD shall have a visible UL mark.

L. Inspection

4. Visually inspect equipment and components at time of delivery. Submit report to with list of items or deficiencies to be corrected.

1. Manufacturer’s standard tests shall be performed.

M. Installation

5. Install VFD system in accordance with details, approved shop drawings and manufacturer's instructions and recommendations.

1. Provide field electrical wiring, both line and low voltage of VFD system components. Install wiring in metal conduit and in accordance with electrical sections of this specification and applicable electrical code.

2. Provide control wiring between interlocks in VFD control circuits and driven motor's disconnect switches, where such motor disconnect switches are provided.

3. Provide grounding conductor in addition to conduit ground for each motor circuit

4. Do not connect ground from one unit to another unit's cabinet.

5. Use separate conduits for incoming and outgoing power conductors from each unit.

6. Use separate conduit for control wiring for each unit. Control wiring shall not occupy same conduit as power wiring.

7. Use minimum 18 gauge shielded wiring with ground for control wiring.

8. Install fuses in control circuits if not factory installed. Provide set of spare fuses.

N. Identification

1. Identify VFDs, components, and control wiring.

2. Identify field-installed conductors, interconnecting wiring, and components; provide warning signs.

3. Label each VFD with engraved nameplate.

4. Label each enclosure-mounted control and pilot device.

O. Start-Up

1. Perform tests and inspections.

2. Inspect VFD, wiring, components, connections, and equipment installation.

3. Test insulation resistance for each VFD element, component, connecting motor supply, feeder, and control circuits.

4. Test continuity of each circuit.

5. Verify that voltages at VFD locations are within 10 percent of motor nameplate rated voltages. If outside this range for any motor, notify Owner before starting the motor(s).

6. Test each motor for proper phase rotation.

7. Perform each electrical test and visual and mechanical inspection stated in NETA Acceptance Testing Specification. Certify compliance with test parameters.

8. Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance; otherwise, replace with new units and retest.

9. Test and adjust controls, remote monitoring, and safeties. Replace damaged and malfunctioning controls and equipment.

10. VFDs will be considered defective if they do not pass tests and inspections.

11. Perform start-up of VFD in accordance with procedures as defined by manufacturer for proper operation.

12. Completion of the installation, final inspection, receipt of the test and as-built documentation, and successful performance of the system for a three week period shall constitute acceptance of the system.

LOW PRESSURE DROP EXTENDED SURFACE FILTERS

A. SUMMARY

1. Section includes extended surface V-style final filters for the air handlers in the Fresno Federal Courthouse.

B. ACTION SUBMITTALS

1. Product Data: For each type of product indicated.

2. Manufacturer Warranty.

C. CLOSEOUT SUBMITTALS

1. Operation and maintenance data.

D. QUALITY ASSURANCE

1. ASHRAE Compliance: Applicable requirements in ASHRAE 51.1 and 52.2 A. "ASHRAE/IESNA" Compliance Paragraph below may be required to comply with Project requirements or authorities having jurisdiction. LEED Prerequisite EA 2 requires minimum efficiency equal to requirements in ASHRAE/IESNA 90.1. See "LEED Rating System" Article in the Evaluations for discussion on this prerequisite.

E. WARRANTY

1. Special Warranty Manufacturer's standard form in which manufacturer agrees to repair or replace if product fail in materials or workmanship within specified warranty period.

2. Warranty Period: 1 Year

PRODUCTS

A. MANUFACTURERS

1. Manufacturer: Viledon MV85 or equivalent B. General Requirements

1. General Requirements for Air Filtration:

a) Comply with NFPA 90A.

b) Minimum Arrestance: According to ASHRAE 52.1 and MERV according to ASHRAE 52.2.

c) Filter-Holding Frames: Arranged for flat orientation.

2. Extended-Surface, High Efficiency Filters:

a) Factory-fabricated, extended-surface V-style type or equivalent.

b) All plastic construction to eliminate corrosion.

c) Initial Resistance: 0.23” w.c.

d) Final Resistance: 1.50” w.c.

e) ASHRAE 52.1 Equivalent Efficiency: 80 – 90%

f) MERV according to ASHRAE 52.2: 13

g) Media: Material formed into deep-V-shaped pleats

h) Media is resistant to physical damage from moisture and chemical

i) Moisture resistant up to 100% relative humidity

j) Temperature resistance: Continuous 160 deg F, Peaks 175 deg F.

k) Microbial Resistance level 4 (ASTM D632G)

EXECUTION

INSTALLATION

Provide and install product in accordance to manufacturer’s specifications and recommendations.

Use proper gasketing: Install gasketing on the filters and not on the holding frames.

Retain one of first two paragraphs below for ground-mounted units.

Seal all access openings: This is especially critical for negative pressure areas.

C. DEMONSTRATION

Provide training to Owner's maintenance personnel on maintenance of filters.

BOILER ISOLATION VALVES

0. SUMMARY

1. This section includes isolation valves for the two heating hot water boilers.

0. REFERENCES

1. Comply with applicable Codes and Standards of ANSI, ASME, AGA, NEC, UL, FM and local codes.

0. SUBMITTALS

19. Manufacturer’s literature, operating instructions, maintenance and repair data

19. Manufacturer’s installation instructions

19. Shop drawings with dimensions, single line diagram connection to boilers

19. Actuator wiring diagram

0. BOILER ISOLATION VALVES

20. Stainless steel disc butterfly valve:

20. Body: Ductile iron

20. Seat: EPDM bubble-tight shutoff, rated for dead-end service

20. Disc: 304 Stainless steel, undercut

20. Shaft/Taper pin: 304 stainless steel

20. Bearings: Teflon (PTFE)

20. Static pressure: 200 psig

20. Compatible media: Water, 50% glycol

20. Fluid Temperature: 275 deg F max, -30 deg F min

20. Closeoff: 100 psid

0. Electric Actuator:

21. Power: 24 VAC

21. Ambient temp: -25 to 130 deg F

21. Control Signals: Two-positions

21. Enclosure: NEMA 2

0. Provide fully assembled valve ready for installation by design build contractor.

22. Boiler isolation valve shall include an end switch which will release the boiler to fire only when the isolation valve is fully open.

22. Isolation valve shall be field adjustable in zero and span such that the isolation valve when signaled to closed is still marginally open to allow small amount of flow through the boilers to keep off line boilers in a warm condition.

22. Isolation valve to be electronically actuated, no instrument air shall be required for proper cycling of the valve.

22. Design build contractor shall install the valve per installation instruction.

22. Design build contractor shall wire power to the valve for actuation and signal from boiler enable signal from building automation system.

COMMISSIONING

SECTION INCLUDES

A. Equipment testing and start-up B. Validation of proper and thorough installation of equipment C. Documentation of tests, procedures, and installations D. Coordination of training E. Documentation of Operation and Maintenance materials

DEFINITIONS

A. Acceptance Phase: Phase of construction after Startup and initial checkout when Performance Tests, operation and maintenance documentation review and training occurs.

B. Approval: Acceptance that a piece of equipment or system has been properly installed and is functioning in tested modes according to the Contract Documents and Commissioning Plan.

C. Basis of Design (BOD): The documentation of design criteria and assumptions for systems, components, and methods chosen to meet the Owner’s Project Requirements and applicable regulatory requirements.

D. Building Management System (BMS): The automated building system providing control and user interaction with select building systems.

E. Commissioning Authority (CxA): An independent agent hired directly by the owner and not otherwise associated with the Design Professional(s) or the Contractor. The CxA assists the Contractor with coordinating commissioning and witnesses the commissioning activities on behalf of the owner.

F. Commissioning Issue: A condition that affects, prevents or inhibits commissioning, and must be resolved to complete the commissioning process. Commissioning Issues are documented on the Commissioning Issues Log.

G. Commissioning Issues Log: A log maintained by the CxA listing all Deficiencies and Commissioning Issues documented during the commissioning process. All issues require action, correction and closure, and will be categorized as Open or Closed.

H. Commissioning Plan (Cx Plan): A document that outlines the organization, coordination, allocation of resources, and documentation requirements of the commissioning process.

I. Contractor: The Contractor directly contracted to the owner with overall responsibility for the project, and all commissioning activities described. The Contractor is responsible for all work within its contract scope, including that the Installation Contractors.

J. Contractor’s Commissioning Coordinator (CxC): Individual designated by the Contractor who plans, schedules, directs and coordinates all the Contractor’s commissioning activities, and serves as the Commissioning Authority’s (CxA) single point of contact for all administrative and coordination issues.

K. Data Logger: A stand-alone measuring device installed separate from the BMS to monitor and record flow, current, status, pressure, temperature and the likes.

L. Deferred Testing: Any Pre-Functional Checks & Tests or Functional Performance Testing which cannot be completed when scheduled due to building structure, required occupancy condition or other Deficiency causing delay. CxA and owner must approve deferral of testing.

M. Deficiency: A condition in the installation or function of a component, piece of equipment or system that is not in compliance with the requirements of the Contract Documents. A Deficiency will be considered a Commissioning Issue and documented on the Commissioning Issues Log.

N. Design Professional: The Design Professional(s) responsible for design of each portion of the project being commissioned.

O. Functional Performance Test (FPT): A test of the dynamic function, operation and control sequences of equipment and systems under various modes, such as during low cooling or heating loads, high loads, component failures, unoccupied, varying outside air temperatures, alarm, power failure, etc.