36E77618R0052-00002002.pdf

09-11

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SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

PART 1 - GENERAL

1.1 DESCRIPTION

A. Provide (a) direct-digital control system(s) as indicated on the project documents, point list, interoperability tables, drawings and as described in these specifications. Include a complete and working direct-digital control system. Include all engineering, programming, controls and installation materials, installation labor, commissioning and start-up, training and final project documentation.

1. The direct-digital control system(s) shall consist of high-speed, peer-to-peer network of DDC controllers, and a control system server.

Provide a remote user using a standard web browser to access the control system graphics and change adjustable setpoints with the proper password.

2. The work administered by this Section of the technical specifications shall include all labor, materials, special tools, equipment, enclosures, power supplies, software, software licenses, Project specific software configurations and database entries, interfaces, wiring, tubing, installation, labeling, engineering, calibration, documentation, submittals, testing, verification, training services, permits and licenses, transportation, shipping, handling, administration, supervision, management, insurance, specified services and items required for complete and fully functional Controls Systems.

B. Some products are not provided by, but are nevertheless integrated with the work executed by, the contractor administered by this Section of the technical specifications. The contractor administered by this Section of the technical specifications shall formally coordinate in writing and receive from other contractors formal acknowledgements in writing prior to submission the particulars of the products. These products include the following:

1. Fire alarm systems. If zoned fire alarm is required by the project-specific requirements, this interface shall require multiple relays, which are provided and installed by the fire alarm system contractor, to be monitored.

2. Terminal units’ velocity sensors

3. Unitary HVAC equipment split systems, controls. These include:

a.Discharge temperature control.

Addendum No. 00002 6 April 2018 Attachment No. 1

Correct Life Safety Deficiencies 23 09 23 - 2 636A8-16-006 b.Economizer Control.

c.Flowrate control.

d.Setpoint reset.

e.Time of Day indexing.

f.Status alarm.

4. Variable speed motor controller (VSMC) controls by drive manufacturer.

These controls, if not native Metasys, shall require a Metasys Gateway and interface card. The division 23 contractor shall furnish the

VSMC’s to the Division 26 contractor for installation and connection to line voltage wiring. The division 23 contractor shall make all low voltage and control connections as well as all testing, start up, and programming. The division 23 contractor shall be responsible for a fully operational VSMC system.

5. The following systems have limited control (as individually noted below) from the ECC:

a.Constant temperature or volume rooms: temperature out of acceptable range and status alarms.

b.Medical gas systems (if not bottled at point of use): low pressure and status alarms.

c.Medical and dental vacuum systems: high pressure and status alarms.

d.Medical and dental compressed air systems: low pressure and status alarms.

e.Domestic water heating systems: low temperature, high temperature and status alarms.

f.Elevators: status alarms.

g.Building lighting systems: on/off and scene control.

h.Storm water removal pumps: status alarm.

i.Decontamination and Sterilization rooms: pressure outside of acceptable limit alarms.

C. Responsibility Table:

Work/Item/System Furnish Install Low Voltage Wiring

Line Power

Control system low voltage and communication wiring

23 09 23 23 09 23 23 09 23 N/A

Terminal units 23 23 N/A 26

Controllers for terminal units

23 09 23 23 09 23 23 09 23 26

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Work/Item/System Furnish Install Low Voltage Wiring

Line Power

LAN conduits and raceway 23 09 23 23 09 23 N/A N/A

Automatic dampers (not furnished with equipment)

23 09 23 23 N/A N/A

Automatic damper actuators 23 09 23 23 09 23 23 09 23 23 09 23

Manual valves 23 23 N/A N/A

Automatic valves 23 09 23 23 23 09 23 23 09 23

Pipe insertion devices and taps, flow and pressure stations.

23 23 N/A N/A

Thermowells 23 09 23 23 N/A N/A

Current Switches 23 09 23 23 09 23 23 09 23 N/A

Control Relays 23 09 23 23 09 23 23 09 23 N/A

Flow measuring and sensing devices, and transmitters (Air, Steam, water)

23 09 23 23 09 23 23 09 23 N/A

Power distribution system monitoring interfaces

23 09 23 23 09 23 23 09 23 26

All control system nodes, equipment, housings, enclosures and panels.

23 09 23 23 09 23 23 09 23 26

Smoke detectors 28 31 00 28 31 00 28 31 00 28 31 00

Fire/Smoke Dampers 23 23 28 31 00 28 31 00

Smoke Dampers 23 23 28 31 00 28 31 00

Fire Dampers 23 23 N/A N/A

VSMC’s 23 09 23 26 23 09 23 26

Medical gas panels 23 23 26 26

Fire Alarm shutdown relay interlock wiring

28 28 28 26

Control system monitoring of fire alarm smoke control relay

28 28 23 09 23 28

Fan Coil Unit controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Unit Heater controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Packaged RTU space-mounted controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

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Work/Item/System Furnish Install Low Voltage Wiring

Line Power

Package RTU unit-mounted controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Digital to pneumatic transducers

23 09 23 23 09 23 23 09 23 23 09 23

Starters, HOA switches 23 23 N/A 26

D. Basis of Design: Metasys provided by Johnson Controls - [BUILDING

STANDARD – NO SUBSTITUTE]. This facility’s existing direct-digital control system is manufactured by Johnson Controls. The local Johnson

Controls contact is C.J. Goddard at (319)350-4583. The existing system’s top-end communications is via Metasys. The contractor administered by this Section of the technical specifications shall observe the capabilities, communication network, services, spare capacity of the existing control system and its ECC prior to beginning work.

1. This project is to connect to the existing direct-digital control system. Coordinate with VA personnel to determine all requirements for proper integration and miscellaneous items not specified.

2. Leave existing direct digital system intact and in place. Upgrade the existing direct digital control system’s only as required to add/connect this project to the existing direct digital control system.

Where required, connect to existing pneumatic systems with digital to pneumatic transducers for connection of new direct digital controlled equipment.

E. This campus has standardized on an existing standard Metasys System supported by a pre-selected controls service company. This entity is referred to as the “Control System Integrator” in this Section of the technical specifications. The Control system integrator is responsible for ECC system graphics and expansion. It also prescribes control system-specific commissioning/ verification procedures to the contractor administered by this Section of the technical specification. It lastly provides limited assistance to the contractor administered by this

Section of the technical specification in its commissioning/verification work.

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1. The General Contractor of this project shall directly hire the Control

System Integrator in a contract separate from the contract procuring the controls contractor administered by this Section of the technical specifications.

2. The contractor administered by this Section of the technical specifications shall coordinate all work with the Control System

Integrator. The contractor administered by this Section of the technical specifications shall integrate the Metasys IP control network(s) with the Control System Integrator’s area control through an

Ethernet connection provided by the Control System Integrator.

3. The contractor administered by this Section of the technical specifications shall provide a peer-to-peer networked, stand-alone, distributed control system. This direct digital control (DDC) system shall include microprocessor-based controllers, instrumentation, end control devices, wiring, piping, software, and related systems. This contractor is responsible for all device mounting and wiring.

4. Responsibility Table:

Item/Task Section 23 09 23 contactor

Control system integrator

VA

ECC Expansion X ECC programming X Devices, controllers, control panels and equipment

X

Point addressing: all hardware and software points including setpoint, calculated point, data point(analog/ binary), and reset schedule point

X

Point mapping X Network Programming X ECC Graphics X Controller programming and sequences X Integrity of LAN communications X Electrical wiring X Operator system training X LAN connections to devices X LAN connections to ECC X IP addresses X Overall system verification X Controller and LAN system verification X

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F. Unitary standalone systems including Unit Heaters, Cabinet Unit Heaters, Fan Coil Units, Base Board Heaters, thermal comfort ventilation fans, and similar units for control of room environment conditions may be equipped with integral controls furnished and installed by the equipment manufacturer or field mounted. Refer to equipment specifications and as indicated in project documents. Application of standalone unitary controls is limited to at least those systems wherein remote monitoring, alarm and start-up are not necessary. Examples of such systems include:

1. Light-switch-operated toilet exhaust

2. Vestibule heater

3. Exterior stair heater

4. Attic heating and ventilation

5. Mechanical or electrical room heating and ventilation.

I. The direct-digital control system shall start and stop equipment, move

(position) damper actuators and valve actuators, and vary speed of equipment to execute the mission of the control system. Use electricity as the motive force for all damper and valve actuators, unless use of pneumatics as motive force is specifically granted by the VA.

1.2 RELATED WORK

A. Section 21 05 11, Common Work Results for Fire Suppression.

B. Not Used.

C. Not Used.

D. Section 21 10 00, Water-Based Fire-Suppression Systems.

E. Not Used.

F. Not Used.

G. Not Used.

H. Section 22 62 00, Vacuum Systems for Laboratory and Healthcare

Facilities.

I. Section 22 63 00, Gas Systems for Laboratory and Healthcare Facilities.

J. Not Used.

K. Section 23 21 13, Hydronic Piping.

L. Section 23 22 13, Steam and Condensate Heating Piping.

M. Section 23 31 00, HVAC Ducts and Casings.

N. Section 23 36 00, Air Terminal Units.

O. Section 23 74 13, Packaged, Outdoor, Central Station Air-Handling Units

P. Section 23 81 43, Air-Source Unitary Heat Pumps.

Q. Section 26 05 11, Requirements for Electrical Installations.

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R. Section 26 05 19, Low-Voltage Electrical Power Conductors and Cables (600

Volts and Below).

S. Section 26 05 26, Grounding and Bonding for Electrical Systems.

T. Section 26 05 33, Raceway and Boxes for Electrical Systems.

U. Section 26 09 23, Lighting Controls.

V. Section 26 24 16, Panelboards

W. Section 26 27 26, Wiring Devices.

X. Section 26 29 11, Motor Starters.

Y. Section 27 15 00, Communications Horizontal Cabling

Z. Section 28 31 00, Fire Detection and Alarm.

1.2 DEFINITION

A. Algorithm: A logical procedure for solving a recurrent mathematical problem; A prescribed set of well-defined rules or processes for the solution of a problem in a finite number of steps.

B. ARCNET: ANSI/ATA 878.1 - Attached Resource Computer Network. ARCNET is a deterministic LAN technology; meaning it's possible to determine the maximum delay before a device is able to transmit a message.

C. Analog: A continuously varying signal value (e.g., temperature, current, velocity etc.

D. Not Used.

E. Not Used.

F. Not Used.

G. Not Used.

H. Not Used.

I. Not Used.

J. Not Used.

K. Not Used.

L. Baud: It is a signal change in a communication link. One signal change can represent one or more bits of information depending on type of transmission scheme. Simple peripheral communication is normally one bit per Baud. (e.g., Baud rate = 78,000 Baud/sec is 78,000 bits/sec, if one signal change = 1 bit).

M. Binary: A two-state system where a high signal level represents an "ON" condition and an "OFF" condition is represented by a low signal level.

N. BMP or bmp: Suffix, computerized image file, used after the period in a

DOS-based computer file to show that the file is an image stored as a series of pixels.

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O. Bus Topology: A network topology that physically interconnects workstations and network devices in parallel on a network segment.

P. Control Unit (CU): Generic term for any controlling unit, stand-alone, microprocessor based, digital controller residing on secondary LAN or

Primary LAN, used for local controls or global controls

Q. Deadband: A temperature range over which no heating or cooling is supplied, i.e., 22-25 degrees C (72-78 degrees F), as opposed to a single point change over or overlap).

R. Device: a control system component that contains a Metasys Device Object and uses Metysis protocol to communicate with other devices.

S. Device Object: Every Metasys device requires one Device Object, whose properties represent the network visible properties of that device. Every

Device Object requires a unique Object Identifier number on the Metasys internetwork. This number is often referred to as the device instance.

T. Diagnostic Program: A software test program, which is used to detect and report system or peripheral malfunctions and failures. Generally, this system is performed at the initial startup of the system.

U. Not Used.

V. Direct Digital Control (DDC): Microprocessor based control including

Analog/Digital conversion and program logic. A control loop or subsystem in which digital and analog information is received and processed by a microprocessor, and digital control signals are generated based on control algorithms and transmitted to field devices in order to achieve a set of predefined conditions.

W. Distributed Control System: A system in which the processing of system data is de-centralized and control decisions can and are made at the subsystem level. System operational programs and information are provided to the remote subsystems and status is reported back to the Engineering

Control Center. Upon the loss of communication with the Engineering

Control center, the subsystems shall be capable of operating in a stand-alone mode using the last best available data.

X. Download: The electronic transfer of programs and data files from a central computer or operation workstation with secondary memory devices to remote computers in a network (distributed) system.

Y. DXF: An AutoCAD 2-D graphics file format. Many CAD systems import and export the DXF format for graphics interchange.

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Z. Electrical Control: A control circuit that operates on line or low voltage and uses a mechanical means, such as a temperature sensitive bimetal or bellows, to perform control functions, such as actuating a switch or positioning a potentiometer.

AA. Electronic Control: A control circuit that operates on low voltage and uses a solid-state components to amplify input signals and perform control functions, such as operating a relay or providing an output signal to position an actuator.

BB. Engineering Control Center (ECC): The centralized control point for the intelligent control network. The ECC comprises of personal computer and connected devices to form a single workstation.

CC. Ethernet: A trademark for a system for exchanging messages between computers on a local area network using coaxial, fiber optic, or twisted-pair cables.

DD. Firmware: Firmware is software programmed into read only memory (ROM) chips. Software may not be changed without physically altering the chip.

EE. Gateway: Communication hardware connecting two or more different protocols. It translates one protocol into equivalent concepts for the other protocol. In Metasys applications, a gateway has Metasys on one side and non-Metasys (usually proprietary) protocols on the other side.

FF. GIF: Abbreviation of Graphic interchange format.

GG. Graphic Program (GP): Program used to produce images of air handler systems, fans, chillers, pumps, and building spaces. These images can be animated and/or color-coded to indicate operation of the equipment.

HH. Graphic Sequence of Operation: It is a graphical representation of the sequence of operation, showing all inputs and output logical blocks.

II. I/O Unit: The section of a digital control system through which information is received and transmitted. I/O refers to analog input (AI, digital input (DI), analog output (AO) and digital output (DO). Analog signals are continuous and represent temperature, pressure, flow rate etc, whereas digital signals convert electronic signals to digital pulses

(values), represent motor status, filter status, on-off equipment etc.

JJ. I/P: a method for conveying and routing packets of information over LAN paths. User Datagram Protocol (UDP) conveys information to “sockets” without confirmation of receipt. Transmission Control Protocol (TCP) establishes "sessions", which have end-to-end confirmation and guaranteed sequence of delivery.

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KK. JPEG: A standardized image compression mechanism stands for Joint

Photographic Experts Group, the original name of the committee that wrote the standard.

LL. Local Area Network (LAN): A communication bus that interconnects operator workstation and digital controllers for peer-to-peer communications, sharing resources and exchanging information.

MM. Network Repeater: A device that receives data packet from one network and rebroadcasts to another network. No routing information is added to the protocol.

NN. MS/TP: Master-slave/token-passing (ISO/IEC 8802, Part 3). It is not an acceptable LAN option for VA health-care facilities. It uses twisted pair wiring for relatively low speed and low cost communication.

OO. Network Number: A site-specific number assigned to each network segment to identify for routing. This network number must be unique throughout the Metasys internetwork.

PP. Not Used.

QQ. Object Identifier: An object property used to identify the object, including object type and instance. Object Identifiers must be unique within a device.

RR. Object Properties: Attributes of an object. Examples include present value and high limit properties of an analog input object. Properties are defined in ASHRAE 135; some are optional and some are required. Objects are controlled by reading from and writing to object properties.

SS. Operating system (OS): Software, which controls the execution of computer application programs.

TT. PCX: File type for an image file. When photographs are scanned onto a personal computer they can be saved as PCX files and viewed or changed by a special application program as Photo Shop.

UU. Peripheral: Different components that make the control system function as one unit. Peripherals include monitor, printer, and I/O unit.

VV. Peer-to-Peer: A networking architecture that treats all network stations as equal partners- any device can initiate and respond to communication with other devices.

WW. PICS: Protocol Implementation Conformance Statement, describing the

Metasys capabilities of a device. All Metasys devices have published

PICS.

XX. PID: Proportional, integral, and derivative control, used to control modulating equipment to maintain a setpoint.

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YY. Repeater: A network component that connects two or more physical segments at the physical layer.

ZZ. Router: a component that joins together two or more networks using different LAN technologies. Examples include joining a Metasys Ethernet

LAN to a Metasys MS/TP LAN.

AAA. Sensors: devices measuring state points or flows, which are then transmitted back to the DDC system.

BBB. Thermostats: devices measuring temperatures, which are used in control of standalone or unitary systems and equipment not attached to the DDC system.

1.4 QUALITY ASSURANCE

A. Criteria:

1. Single Source Responsibility of subcontractor: The Contractor shall obtain hardware and software supplied under this Section and delegate the responsibility to a single source controls installation subcontractor. The controls subcontractor shall be responsible for the complete design, installation, and commissioning of the system. The controls subcontractor shall be in the business of design, installation and service of such building automation control systems similar in size and complexity.

2. Equipment and Materials: Equipment and materials shall be cataloged products of manufacturers regularly engaged in production and installation of HVAC control systems. Products shall be manufacturer’s latest standard design and have been tested and proven in actual use.

3. The controls subcontractor shall provide a list of no less than five similar projects which have building control systems as specified in this Section. These projects must be on-line and functional such that the Department of Veterans Affairs (VA) representative would observe the control systems in full operation.

4. The controls subcontractor shall have in-place facility within 50 miles with technical staff, spare parts inventory for the next five

(5) years, and necessary test and diagnostic equipment to support the control systems.

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5. The controls subcontractor shall have minimum of three years experience in design and installation of building automation systems similar in performance to those specified in this Section. Provide evidence of experience by submitting resumes of the project manager, the local branch manager, project engineer, the application engineering staff, and the electronic technicians who would be involved with the supervision, the engineering, and the installation of the control systems. Training and experience of these personnel shall not be less than three years. Failure to disclose this information will be a ground for disqualification of the supplier.

6. Provide a competent and experienced Project Manager employed by the

Controls Contractor. The Project Manager shall be supported as necessary by other Contractor employees in order to provide professional engineering, technical and management service for the work. The Project Manager shall attend scheduled Project Meetings as required and shall be empowered to make technical, scheduling and related decisions on behalf of the Controls Contractor.

B. Codes and Standards:

1. All work shall conform to the applicable Codes and Standards.

2. Electronic equipment shall conform to the requirements of FCC

Regulation, Part 15, Governing Radio Frequency Electromagnetic

Interference, and be so labeled.

3. Refer to specifications section 26 29 11, 1.5 for additional applicable publications.

1.5 PERFORMANCE

A. The system shall conform to the following:

1. Graphic Display: The system shall display up to four (4) graphics on a single screen with a minimum of twenty (20) dynamic points per graphic. All current data shall be displayed within ten (10) seconds of the request.

2. Graphic Refresh: The system shall update all dynamic points with current data within eight (8) seconds. Data refresh shall be automatic, without operator intervention.

3. Object Command: The maximum time between the command of a binary object by the operator and the reaction by the device shall be two(2) seconds. Analog objects shall start to adjust within two (2) seconds.

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4. Object Scan: All changes of state and change of analog values shall be transmitted over the high-speed network such that any data used or displayed at a controller or work-station will be current, within the prior six (6) seconds.

5. Alarm Response Time: The maximum time from when an object goes into alarm to when it is annunciated at the workstation shall not exceed

(10) seconds.

6. Program Execution Frequency: Custom and standard applications shall be capable of running as often as once every (5) seconds. The Contractor shall be responsible for selecting execution times consistent with the mechanical process under control.

7. Multiple Alarm Annunciations: All workstations on the network shall receive alarms within five (5) seconds of each other.

8. Performance: Programmable Controllers shall be able to execute DDC PID control loops at a selectable frequency from at least once every one

(1) second. The controller shall scan and update the process value and output generated by this calculation at this same frequency.

9. Reporting Accuracy: Listed below are minimum acceptable reporting end-to-end accuracies for all values reported by the specified system:

Measured Variable Reported Accuracy

Space temperature ±0.5 C (±1 F)

Ducted air temperature ±0.5 C [±1 F]

Outdoor air temperature ±1.0 C [±2 F]

Dew Point ±1.5 C [±3 F]

Water temperature ±0.5 C [±1 F]

Relative humidity ±2% RH

Water flow ±1% of reading

Air flow (terminal) ±10% of reading

Air flow (measuring stations) ±5% of reading

Carbon Monoxide (CO) ±5% of reading

Carbon Dioxide (CO2) ±50 ppm

Air pressure (ducts) ±25 Pa [±0.1"w.c.]

Air pressure (space) ±0.3 Pa [±0.001"w.c.]

Water pressure ±2% of full scale *Note 1

Electrical Power ±0.5% of reading

Note 1: for both absolute and differential pressure

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10. Control stability and accuracy: Control sequences shall maintain measured variable at setpoint within the following tolerances:

Controlled Variable Control Accuracy Range of Medium

Air Pressure ±50 Pa (±0.2 in. w.g.) 0–1.5 kPa (0–6 in. w.g.)

Air Pressure ±3 Pa (±0.01 in. w.g.) -25 to 25 Pa (-0.1 to 0.1 in. w.g.)

Airflow ±10% of full scale

Space Temperature ±1.0ºC (±2.0ºF)

Duct Temperature ±1.5ºC (±3ºF)

Humidity ±5% RH

Fluid Pressure ±10 kPa (±1.5 psi) 0–1 MPa (1–150 psi)

Fluid Pressure ±250 Pa (±1.0 in. w.g.) 0–12.5 kPa (0–50 in. w.g.)

differential

11. Extent of direct digital control: control design shall allow for at least the points indicated on the points lists on the drawings.

1.6 WARRANTY

A. Labor and materials for control systems shall be warranted for a period as specified under Warranty.

B. Control system failures during the warranty period shall be adjusted, repaired, or replaced at no cost or reduction in service to the Owner.

The system includes all computer equipment, transmission equipment, and all sensors and control devices.

C. Controls and Instrumentation subcontractor shall be responsible for temporary operations and maintenance of the control systems during the construction period until final commissioning, training of facility operators and acceptance of the project by VA.

1.7 SUBMITTALS

A. Submit shop drawings in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Manufacturer’s literature and data for all components including the following:

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1. A wiring diagram for each type of input device and output device including DDC controllers, modems, repeaters, etc. Diagram shall show how the device is wired and powered, showing typical connections at the digital controllers and each power supply, as well as the device itself. Show for all field connected devices, including but not limited to, control relays, motor starters, electric or electronic actuators, and temperature pressure, flow and humidity sensors and transmitters.

2. A diagram of each terminal strip, including digital controller terminal strips, terminal strip location, termination numbers and the associated point names.

3. Control dampers and control valves schedule, including the size and pressure drop.

4. Control air-supply components, and computations for sizing compressors, receivers and main air-piping, if pneumatic controls are furnished.

5. Catalog cut sheets of all equipment used. This includes, but is not limited to software (by manufacturer and by third parties), DDC controllers, panels, peripherals, airflow measuring stations and associated components, and auxiliary control devices such as sensors, actuators, and control dampers. When manufacturer’s cut sheets apply to a product series rather than a specific product, the data specifically applicable to the project shall be highlighted. Each submitted piece of literature and drawings should clearly reference the specification and/or drawings that it supposed to represent.

6. Sequence of operations for each HVAC system and the associated control diagrams. Equipment and control labels shall correspond to those shown on the drawings.

7. Color prints of proposed graphics with a list of points for display.

8. Schematic wiring diagrams for all control, communication and power wiring. Provide a schematic drawing of the central system installation. Label all cables and ports with computer manufacturers’ model numbers and functions. Show all interface wiring to the control system.

9. Not Used.

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10. An instrumentation list for each controlled system. Each element of the controlled system shall be listed in table format. The table shall show element name, type of device, manufacturer, model number, and product data sheet number.

11. Riser diagrams of wiring between central control unit and all control panels.

12. Scaled plan drawings showing routing of LAN and locations of control panels, controllers, routers, gateways, ECC, and larger controlled devices.

13. Construction details for all installed conduit, cabling, raceway, cabinets, and similar. Construction details of all penetrations and their protection.

14. Quantities of submitted items may be reviewed but are the responsibility of the contractor administered by this Section of the technical specifications.

C. Product Certificates: Compliance with Article, QUALITY ASSURANCE.

D. Licenses: Provide licenses for all software residing on and used by the

Controls Systems and transfer these licenses to the Owner prior to completion.

E. As Built Control Drawings:

1. Furnish three (3) copies of as-built drawings for each control system.

The documents shall be submitted for approval prior to final completion.

2. Furnish one (1) stick set of applicable control system prints for each mechanical system for wall mounting. The documents shall be submitted for approval prior to final completion.

3. Furnish one (1) CD-ROM in CAD DWG and/or .DXF format for the drawings noted in subparagraphs above.

F. Operation and Maintenance (O/M) Manuals):

1. Submit in accordance with Article, INSTRUCTIONS, in Specification

Section 01 00 00, GENERAL REQUIREMENTS.

2. Include the following documentation:

a. General description and specifications for all components, including logging on/off, alarm handling, producing trend reports, overriding computer control, and changing set points and other variables.

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b. Detailed illustrations of all the control systems specified for ease of maintenance and repair/replacement procedures, and complete calibration procedures.

c. One copy of the final version of all software provided including operating systems, programming language, operator workstation software, and graphics software.

d. Complete troubleshooting procedures and guidelines for all systems.

e. Complete operating instructions for all systems.

f. Recommended preventive maintenance procedures for all system components including a schedule of tasks for inspection, cleaning and calibration. Provide a list of recommended spare parts needed to minimize downtime.

g. Training Manuals: Submit the course outline and training material to the Owner for approval three (3) weeks prior to the training to

VA facility personnel. These persons will be responsible for maintaining and the operation of the control systems, including programming. The Owner reserves the right to modify any or all of the course outline and training material.

h. Licenses, guaranty, and other pertaining documents for all equipment and systems.

G. Submit Performance Report to Project Manager prior to final inspection.

1.8 INSTRUCTIONS

A. Instructions to VA operations personnel: Perform in accordance with

Article, INSTRUCTIONS, in Specification Section 01 00 00, GENERAL

REQUIREMENTS, and as noted below. Contractor shall also video tape instruction sessions noted below.

1. First Phase: Formal instructions to the VA facilities personnel for a total of 16 hours, given in multiple training sessions (each no longer than four hours in length), conducted sometime between the completed installation and prior to the performance test period of the control system, at a time mutually agreeable to the Contractor and the VA.

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2. Second Phase: This phase of training shall comprise of on the job training during start-up, checkout period, and performance test period. VA facilities personnel will work with the Contractor’s installation and test personnel on a daily basis during start-up and checkout period. During the performance test period, controls subcontractor will provide 32 hours of instructions, given in multiple training sessions (each no longer than four hours in length), to the

VA facilities personnel.

3. The O/M Manuals shall contain approved submittals as outlined in

Article 1.7, SUBMITTALS. The Controls subcontractor will review the manual contents with VA facilities personnel during second phase of training.

4. Training shall be given by direct employees of the controls system subcontractor.

1.9 PROJECT CONDITIONS (ENVIRONMENTAL CONDITIONS OF OPERATION)

A. The peripheral devices and system support equipment shall be designed to operate in ambient condition of 20 to 35 C (65 to 90 F) at a relative humidity of 20 to 80% non-condensing.

B. The CUs used outdoors shall be mounted in NEMA 4 waterproof enclosures, and shall be rated for operation at –40 to 65 C (-40 to 150 F).

C. All electronic equipment shall operate properly with power fluctuations of plus 10 percent to minus 15 percent of nominal supply voltage.

D. Sensors and controlling devices shall be designed to operate in the environment, which they are sensing or controlling.

1.10 APPLICABLE PUBLICATIONS

A. 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.

B. American Society of Heating, Refrigerating, and Air-Conditioning

Engineers (ASHRAE):

C. American Society of Mechanical Engineers (ASME):

B16.18-01 ..............Cast Copper Alloy Solder Joint Pressure Fittings.

B16.22-01 ..............Wrought Copper and Copper Alloy Solder Joint

Pressure Fittings.

D. American Society of Testing Materials (ASTM):

B32-08 .................Standard Specification for Solder Metal B88-09 .................Standard Specifications for Seamless Copper Water

Tube B88M-09 ................Standard Specification for Seamless Copper Water

Tube (Metric)

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B280-08 ................Standard Specification for Seamless Copper Tube for Air-Conditioning and Refrigeration Field Service

D2737-03 ...............Standard Specification for Polyethylene (PE) Plastic Tubing

E. Federal Communication Commission (FCC):

Rules and Regulations Title 47 Chapter 1-2001 Part 15: Radio Frequency Devices.

F. Institute of Electrical and Electronic Engineers (IEEE):

802.3-11 ...............Information Technology-Telecommunications and Information Exchange between Systems-Local and Metropolitan Area Networks- Specific Requirements-Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access method and Physical Layer Specifications

G. National Fire Protection Association (NFPA):

70-11 ..................National Electric Code 90A-09 .................Standard for Installation of Air-Conditioning and

Ventilation Systems

H. Underwriter Laboratories Inc (UL):

94-10 ..................Tests for Flammability of Plastic Materials for Parts and Devices and Appliances

294-10 .................Access Control System Units 486A/486B-10 ...........Wire Connectors 555S-11 ................Standard for Smoke Dampers 916-10 .................Energy Management Equipment 1076-10 ................Proprietary Burglar Alarm Units and Systems

PART 2 - PRODUCTS

2.1 MATERIALS

A. Use new products that the manufacturer is currently manufacturing and that have been installed in a minimum of 25 installations. Spare parts shall be available for at least five years after completion of this contract.

2.2 CONTROLS SYSTEM ARCHITECTURE

A. General

1. The Controls Systems shall consist of multiple Nodes and associated equipment connected by industry standard digital and communication network arrangements.

2. The building controllers and principal communications network equipment shall be standard products of recognized major manufacturers available through normal PC and computer vendor channels – not

"Clones" assembled by a third-party subcontractor.

3. The networks shall, at minimum, comprise, as necessary, the following:

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a. Not Used.

b. Network computer processing, data storage and Metasys-compliant communication equipment including Servers and digital data processors.

c. Metasys-compliant routers, bridges, switches, hubs, modems, gateways, interfaces and similar communication equipment.

d. Active processing Metasys-compliant building controllers connected to other Metasys-compliant controllers together with their power supplies and associated equipment.

e. Addressable elements, sensors, transducers and end devices.

f. Third-party equipment interfaces and gateways as described and required by the Contract Documents.

g. Other components required for a complete and working Control

Systems as specified.

B. The Specifications for the individual elements and component subsystems shall be minimum requirements and shall be augmented as necessary by the

Contractor to achieve both compliance with all applicable codes, standards and to meet all requirements of the Contract Documents.

C. Network Architecture

1. The Controls communication network shall utilize Metasys communications protocol operating over a standard Ethernet LAN and operate at a minimum speed of 100 Mb/sec.

2. The networks shall utilize only copper and optical fiber communication media as appropriate and shall comply with applicable codes, ordinances and regulations.

3. All necessary telephone lines, ISDN lines and internet Service

Provider services and connections will be provided by the VA.

D. Third Party Interfaces:

1. The contractor administered by this Section of the technical specifications shall include necessary hardware, equipment, software and programming to allow data communications between the controls systems and building systems supplied by other trades.

2. Other manufacturers and contractors supplying other associated systems and equipment shall provide their necessary hardware, software and start-up at their cost and shall cooperate fully with the contractor administered by this Section of the technical specifications in a timely manner and at their cost to ensure complete functional integration.

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2.3 COMMUNICATION

A. Control products, communication media, connectors, repeaters, hubs, and routers shall comprise a Metasys internetwork.

B. Each controller shall have a communication port for connection to an operator interface.

C. Internetwork operator interface and value passing shall be transparent to internetwork architecture.

1. An operator interface connected to a controller shall allow the operator to interface with each internetwork controller as if directly connected. Controller information such as data, status, reports, system software, and custom programs shall be viewable and editable from each internetwork controller.

2. Inputs, outputs, and control variables used to integrate control strategies across multiple controllers shall be readable by each controller on the internetwork. Program and test all cross-controller links required to execute specified control system operation. An authorized operator shall be able to edit cross-controller links by typing a standard object address.

E. System shall be expandable to at least twice the required input and output objects with additional controllers, associated devices, and wiring. Expansion shall not require operator interface hardware additions or software revisions.

F. Controllers with real-time clocks shall use the Metasys Time

Synchronization service. The system shall automatically synchronize system clocks daily from an operator-designated device via the internetwork. The system shall automatically adjust for daylight savings and standard time as applicable.

2.7 NETWORK AND DEVICE NAMING CONVENTION

A. Network Numbers

1. Metasys network numbers shall be based on a "facility code, network" concept. The "facility code" is the VAMC’s or VA campus’ assigned numeric value assigned to a specific facility or building. The

"network" typically corresponds to a "floor" or other logical configuration within the building. Verify existing standards.

B. Not Used.

C. Device Names

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1. Name the control devices based on facility name, location within a facility, the system or systems that the device monitors and/or controls, or the area served. The intent of the device naming is to be easily recognized. Names can be up to 254 characters in length, without embedded spaces. Provide the shortest descriptive, but unambiguous, name. For example, in building #123 prefix the number with a “B” followed by the building number, if there is only one chilled water pump "CHWP-1", a valid name would be "B123.CHWP.

1.STARTSTOP". If there are two pumps designated "CHWP-1", one in a basement mechanical room (Room 0001) and one in a penthouse mechanical room (Room PH01), the names could be "B123.R0001.CHWP.1. STARTSTOP" or

"B123.RPH01.CHWP.1.STARTSTOP". In the case of unitary controllers, for example a VAV box controller, a name might be "B123.R101.VAV".

2.8 VARIABLE SPEED MOTOR CONTROLLER (VSMC)

A. VSMC shall be in accordance with applicable portions of this specification. The VSMC package as specified herein shall be enclosed in a UL NEMA Type 1 enclosure (enclosures with only NEMA ratings are not acceptable), completely assembled and tested by the manufacturer in an ISO9001 facility.

B. Maximum physical size of each unit:

1. 1-15 HP: 12 inches deep, 16 inches wide, 30 inches high.

2. 20-50 HP: 13 inches deep, 16 inches wide, 46 inches high.

An integrated enclosure extender box shall be provided to contain the

Motor Circuit Protector, the bypass and the reactor for each VSMC.

C. VSMC shall be electronic, with adjustable frequency and voltage, three phase output, capable of driving standard NEMA B three-phase induction motors at full rated speed. The control technique shall be pulse width modulation (PWM), where the VSMC utilizes a full wave bridge design incorporating diode rectifier circuitry. Silicon controlled rectifiers or other control techniques are not acceptable.

D. VSMC shall be suitable for variable torque loads, and shall be capable of providing sufficient torque to allow the motor to break away from rest upon first application of power. VSMCs and options shall be UL508 listed as a complete assembly. The base VSMC shall be UL listed for

100 kA SCCR without the need for external input fuses

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E. VSMC shall be capable of operating within voltage parameters of plus 10 to minus 10 percent of line voltage, and be suitably rated for the full load amps of the maximum watts (HP) within its class. The VSMC shall continue to operate without faulting from a line of +30% to -35% of nominal voltage.

F. Minimum efficiency shall be 95 percent at 100 percent speed and 85 percent at 50 percent speed.

G. The displacement power factor of the VSMC shall not be less than 95 percent under any speed or load condition.

H. VSMC current and voltage harmonic distortion shall not exceed the values allowed by IEEE 519. Have internal swinging (non-linear) chokes providing impedance equivalent to 5% to reduce the harmonics to the power line. Swinging choke shall be required resulting in superior partial load harmonic reduction. Linear chokes are not acceptable. 5% impedance may be from dual (positive and negative DC bus) chokes, or 5% swinging AC line chokes. VSMC’s with only one DC choke shall add an AC line choke.

I. Operating and Design Conditions:

1. -15 to 40° C (5 to 104° F) ambient temperature. Operation to 50° C shall be allowed with a 10% reduction from VSMC full load current.

2. Altitude 0 to 3300 feet above sea level. Operation to 6600 shall be allowed with a 10% reduction from VSMC full load current.

3. Humidity less than 95%, non-condensing.

4. Input frequency tolerance shall be +/- 2 Hz.

5. Efficiency shall be a minimum of 95% at full load at full speed.

Displacement power factor shall be greater than .95 lagging over the entire speed range.

6. The drive overload current shall be 100% continuous and 110% for 1 minute.

J. VSMC shall have the following features:

02-01-15

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1. Isolated power for control circuits.

2. All circuit boards shall be coated to protect against corrosion.

3. Manually resettable overload protection for each phase.

4. Adjustable current limiting circuitry to provide soft motor starting. Maximum starting current shall not exceed 200 percent of motor full load current.

5. Independent acceleration and deceleration time adjustment, manually adjustable from 2 to 2000 seconds. Set timers to the equipment manufacturer's recommended time in the above range.

6. Control input circuitry that will accept 4 to 20 mA current or 0-10

VDC voltage control signals from an external source.

7. Automatic frequency adjustment from 1 Hz to 300 Hz.

8. Circuitry to initiate an orderly shutdown when any of the conditions listed below occurs. The VSMC shall not be damaged by any of these electrical disturbances and shall automatically restart when the conditions are corrected. The VSMC shall be able to restart into a rotating motor operating in either the forward or reverse direction and matching that frequency.

a. Incorrect phase sequence.

b. Single phasing.

c. Over-voltage in excess of 10 percent.

d. Under-voltage in excess of 15 percent.

e. Running overcurrent above 110 percent (VSMC shall not automatically reset for this condition.)

f. Instantaneous overcurrent above 150 percent (VSMC shall not automatically reset for this condition).

g. Short duration power outages of 12 cycles or less (i.e., distribution line switching, generator testing, and automatic transfer switch operations.)

9. Provide automatic shutdown upon receiving a power transfer warning signal from an automatic transfer switch. VSMC shall automatically restart motor after the power transfer.

10. Automatic Reset/Restart: Attempt three restarts after VSMC fault or on return of power after an interruption and before shutting down for manual reset or fault correction, with adjustable delay time between restart attempts.

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11. Bidirectional Autospeed Search: Capable of starting VSMC into rotating loads spinning in either direction and returning motor to set speed in proper direction, without causing damage to VSMC, motor, or load.

12. The Maximum Short Circuit Current Rating of the entire VSMC assembly shall be 100,000 RMS symmetrical for all ratings.

13. Input fuses shall be provided for all integrated enclosures.

K. VSMC shall include an input circuit breaker which will disconnect all input power, interlocked with the door so that the door cannot be opened with the circuit breaker in the closed position.

L. VSMC shall include a 5% line reactor and a built-in RFI/EMI filter. All

VSMC’s shall include EMI/RFI filters. The onboard filters shall allow the VSMC assembly to be CE Marked and the VSMC shall meet product standard EN 61800-3 for the First Environment restricted level

(Category C2) with up to 100 feet of motor cable.

M. VSMC shall include three-phase protection against damage from supply voltage surges in accordance with UL 1449. The VSMC shall include a coordinated AC transient surge protection system consisting of 4 MOVs

(phase to phase and phase to ground), a capacitor clamp, 1600 PIV Diode

Bridge and internal chokes. The MOV’s shall have a minimum 125 joule rating per phase across the diode bridge. VSMCs that do not include coordinated AC transient surge protection shall include an external TVSS

(Transient Voltage Surge Suppressor).

N. VSMC shall include front-accessible operator station, with sealed backlit removable keypad and digital LCD display, which allows complete programming, operating, monitoring, and diagnostic capabilities.

Capable of remote mounting and allow for uploading and downloading of parameter settings as an aid for start-up of multiple VSMCs. Access to the operator control station shall be available without opening the door of the VSMC. The keypad shall include a Local/Remote key to toggle the system to and from the Local and Remote modes.

1. Typical control functions shall include but not be limited to:

a. HAND-OFF-AUTOMATIC-RESET, with manual speed control in HAND mode.

The drive shall incorporate “bumpless transfer” of speed reference when switching between “Hand” and “Auto” modes. There shall be fault reset and “Help” buttons on the keypad. The Help

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