230923 Direct-Digital Control System Connect to Existing N4.pdf

09-11

23 09 23 - 1

SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

CONNECTING TO EXISTING FACILITY BAS

PART 1 - GENERAL

1.1 DESCRIPTION

A. The controls system shall seamlessly integrate into the existing

Tridium N4 Supervisor controls system.

1. The existing direct-digital control system(s) has a native BACnet.

All new workstations, controllers, devices and components shall be listed by BACnet Testing Laboratories. All new workstations, controller, devices and components shall be accessible using a Web browser interface and shall communicate exclusively using the ASHRAE

Standard 135 BACnet communications protocol without the use of gateways, unless otherwise allowed by this Section of the technical specifications, specifically shown on the design drawings and specifically requested otherwise by the VA.

a. If VA approved to be used, gateways shall support the ASHRAE

Standard 135 BACnet communications protocol.

b. If VA approved to be used, gateways shall provide all object properties and read/write services shown on VA-approved interoperability schedules.

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, Warranty, specified services and items required for complete and fully functional Controls System.

3. The control system shall ensure each mechanical system can operate under stand-alone mode. The contractor shall provide controllers for each mechanical or specified system. In the event of a network communication failure, or the loss of any other controller, the control system shall continue to operate independently. Failure of the ECC shall have no effect on the field controllers, including those involved with global strategies.

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B. Some products are furnished but not installed by the subcontractor administered by this Section of the technical specifications. The subcontractor administered by this Section of the technical specifications shall formally coordinate in writing and receive from other subcontractors’ formal acknowledgements in writing prior to submission the installation of the products. Examples of these products might include:

1. Control valves.

2. Flow switches.

3. Flow meters.

4. Sensor wells and sockets in piping.

5. Terminal unit controllers.

6. Any others specified in the project design or other specifications.

C. The subcontractor administered by this Section of the technical specifications shall formally coordinate in writing and receive from other subcontractors formal acknowledgements in writing prior to submission the procurement of the products. Examples of such products include:

1. Refrigerant leak detection system.

2. Factory-furnished accessory thermostats and sensors furnished with unitary equipment.

D. Some products are not provided by but are nevertheless integrated with the work executed by the subcontractor administered by this Section of the technical specifications. The subcontractor administered by this

Section of the technical specifications shall formally coordinate in writing and receive from other subcontractors formal acknowledgements in writing prior to submission the particulars of the products.

Examples of these products include:

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 subcontractor, to be monitored.

2. Terminal units’ velocity sensors

3. Unitary HVAC equipment (rooftop air conditioning units, split systems, packaged pumping stations) controls. These include:

a. Discharge temperature control.

b. Economizer control.

c. Flowrate control

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d. Setpoint reset.

e. Time of day indexing.

f. Status alarm

4. Variable frequency drives.

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

a. Constant temperature 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. Isolation rooms: pressure outside of acceptable limit alarms.

E. Responsibility Table (Not complete. Refer to all specifications and drawings for any other requirements):

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 23 09 23 16

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

Power distribution system monitoring interfaces

23 09 23 23 09 23 23 09 23 26

Interface with chiller/boiler controls

23 09 23 23 09 23 23 09 23 26

Chiller/boiler controls interface with control system

23 23 23 09 23 26

23 09 23 - 4

Work/Item/System Furnish Install Low Voltage Wiring

Line Power

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

Chiller/starter interlock wiring

N/A N/A 26 26

Chiller Flow Switches 23 23 23 N/A

Boiler interlock wiring 23 23 23 26

Boiler Flow Switches 23 23 23 N/A

Water treatment system 23 23 23 26

VFDs 23 09 23 26 23 09 23 26

Refrigerant monitors 23 23 09 23 23 09 23 26

Laboratory Environmental Controls

23 09 23 23 09 23 23 09 23 26

Fume hood controls 23 09 23 23 09 23 23 09 23 26

Medical gas panels 23 23 26 26

Laboratory Air Valves 23 23 23 09 23 N/A

Computer Room A/C Unit field-mounted controls

23 23 16 26

Control system interface with CRU A/C controls

23 09 23 23 09 23 23 09 23 26

CRU A/C unit controls interface with control system

23 23 09 23 23 09 23 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

Fire-fighter’s smoke control station (FSCS

28 28 28 28

Fan Coil Unit controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Unit Heater controls (not 23 09 23 23 09 23 23 09 23 26

23 09 23 - 5

Work/Item/System Furnish Install Low Voltage Wiring

Line Power furnished with equipment)

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

23 09 23 23 09 23 23 09 23 26

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

23 09 23 23 09 23 23 09 23 26

Cooling Tower Vibration Switches

23 23 23 09 23 23 09 23

Cooling Tower Level Control Devices

23 23 23 09 23 23 09 23

Cooling Tower makeup water control devices

23 23 23 09 23 23 09 23

Starters, HOA switches 23 23 N/A 26

A. This facility’s existing direct-digital control system is manufactured by Tridium and is Niagara N4 based, and its ECC is located in the DDC shop at building 35. The contractor shall observe the capabilities, communication network, services, spare capacity of the existing control system and its ECC prior to beginning work.

1. Provide a new ASHRAE Standard 135 BACnet-compliant

Control/Communications Panel and system as indicated or explained on drawings or in project specifications. Full interoperability is required with all identified systems such as air handling, elevator, generator, electrical meter, water meter etc.

THE CONTRACTOR SHALL FULLY INTEGRATE THE NEW CONTROL SYSTEM WITH THE

EXISTING ECC AT THE FAYETTEVILLE VAMC. ALL NEW CONTROL DEVICES,

SOFTWARE, ETC. SHALL BE FULLY COMPATIBLE WITH THE EXISTING Tridium

Niagara N4 system.

B. This campus has standardized on ASHRAE Standard 135, BACnet/IP Control

System supported by a separate controls service company. It also prescribes control system-specific commissioning/ verification procedures to the contractor. This service company provides limited assistance to the contractor in its commissioning/verification work.

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

System Integrator separate from the VA controls service company.

2. The contractor shall coordinate all work with the VA COR. The contractor shall integrate to the ASHRAE Standard 135, BACnet/IP

23 09 23 - 6 control network with the Control System and components installed under this project.

3. The contractor shall provide one portable operator terminal – laptop/tablet to be turned over to the VA COR, microprocessor-based controllers, instrumentation, end control devices, wiring, piping, software, and related systems. This contractor is responsible for all device mounting and wiring. See 2.5 PORTABLE

OPERATOR’S TERMINAL (pot)

4. Responsibility Table:

Item/Task General contactor

(GC)

GC Control system integrator

VA

ECC expansion X ECC programming X Devices, meters, 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

C. 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. 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

23 09 23 - 7 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 COR.

1.2 RELATED WORK

A. Section 11 41 21, Walk-In Coolers and Freezers.

B. Section 11 53 13, Laboratory Fume Hoods.

C. Section 11 53 23, Laboratory Refrigerators.

D. Section 11 53 53, Biological Safety Cabinets.

E. Section 11 78 13, Mortuary Refrigerators.

F. Section 13 21 29, Constant Temperature Rooms.

G. Section 14 12 11, Electric Dumbwaiters (Drum Type).

H. Section 14 12 21, Electric Dumbwaiters (Geared Traction).

I. Section 14 21 00, Electric Traction Elevators.

J. Section 14 21 11, Non-Personnel Traction Elevators.

K. Section 14 24 00, Hydraulic Elevators.

L. Section 14 24 11, Non-Personnel Hydraulic Elevators.

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

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

O. Section 22 11 23, Domestic Water Pumps.

P. Section 22 13 29, Sanitary Sewerage Pumps.

Q. Section 22 13 33, Packaged, Submersible Sewerage Pump Units.

R. Section 22 13 36, Packaged, Wastewater Pump Units.

S. Section 22 14 29, Sump Pumps.

T. Section 22 14 33, Packaged, Pedestal Drainage Pump Units.

U. Section 22 14 36, Packaged, Submersible, Drainage Pump Units.

V. Section 22 15 00, General Service Compressed-Air Systems.

W. Section 22 33 00, Electric Domestic Water Heaters.

X. Section 22 34 00, Fuel-Fired Domestic Water Heaters.

Y. Section 22 35 00, Domestic Water Heat Exchangers.

Z. Section 22 61 19.74, Dental Compressed-Air Equipment.

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

Facilities.

BB. Section 22 62 19.74, Dental Vacuum and Evacuation Equipment.

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

DD. Section 23 09 11, Instrumentation and Control for Boiler Plant.

EE. Section 23 21 13, Hydronic Piping.

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

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

HH. Section 23 36 00, Air Terminal Units.

II. Section 23 38 13, Commercial-Kitchen Hoods.

JJ. Section 23 52 33, Water-Tube Boilers.

KK. Section 23 52 39, Fire-Tube Boilers.

LL. Section 23 64 00, Packaged Water Chillers.

MM. Section 23 73 00, Indoor Central-Station Air-Handling Units.

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

Units.

OO. Section 23 81 00, Decentralized Unitary HVAC Equipment.

PP. Section 23 81 23, Computer-Room Air-Conditioners.

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

RR. Section 23 81 46, Water-Source Unitary Heat Pumps.

SS. Section 23 84 00, Humidity Control Equipment.

TT. Section 25 10 10, Advanced Utility Metering System.

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

VV. Section 26 05 21, Low-Voltage Electrical Power Conductors and Cables

(600 Volts and Below).

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

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

YY. Section 26 09 23, Lighting Controls.

ZZ. Section 26 22 21, Specialty Transformers.

AAA. Section 26 27 26, Wiring Devices.

BBB. Section 26 29 11, Motor Starters.

CCC. Section 26 32 13, Engine Generators.

DDD. Section 27 15 00, Communications Horizontal Cabling

EEE. 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 mN4imum delay before a device is able to transmit a message.

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

D. BACnet: A Data Communication Protocol for Building Automation and

Control Networks, ANSI/ASHRAE Standard 135. This communications

23 09 23 - 9 protocol allows diverse building automation devices to communicate data over and services over a network.

E. BACnet/IP: Annex J of Standard 135. It defines and allows for using a reserved UDP socket to transmit BACnet messages over IP networks. A

BACnet/IP network is a collection of one or more IP sub-networks that share the same BACnet network number.

F. BACnet Internetwork: Two or more BACnet networks connected with routers. The two networks may sue different LAN technologies.

G. BACnet Network: One or more BACnet segments that have the same network address and are interconnected by bridges at the physical and data link layers.

H. BACnet Segment: One or more physical segments of BACnet devices on a

BACnet network, connected at the physical layer by repeaters.

I. BACnet Broadcast Management Device (BBMD): A communications device which broadcasts BACnet messages to all BACnet/IP devices and other

BBMDs connected to the same BACnet/IP network.

J. BACnet Interoperability Building Blocks (BIBBs): BACnet

Interoperability Building Blocks (BIBBs) are collections of one or more

BACnet services. These are prescribed in terms of an "A" and a "B" device. Both of these devices are nodes on a BACnet internetwork.

K. BACnet Testing Laboratories (BTL). The organization responsible for testing products for compliance with the BACnet standard, operated under the direction of BACnet International.

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.

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

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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 BACnet Device Object and uses BACnet to communicate with other devices.

S. Device Object: Every BACnet 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

BACnet internetwork. This number is often referred to as the device instance.

T. Device Profile: A specific group of services describing BACnet capabilities of a device, as defined in ASHRAE Standard 135-2008, Annex

L. Standard device profiles include BACnet Operator Workstations (B-

OWS), BACnet Building Controllers (B-BC), BACnet Advanced Application

Controllers (B-AAC), BACnet Application Specific Controllers (B-ASC), BACnet Smart Actuator (B-SA), and BACnet Smart Sensor (B-SS). Each device used in new construction is required to have a PICS statement listing which service and BIBBs are supported by the device.

U. 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.

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 decentralized 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.

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

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 coN4ial, 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 BACnet applications, a gateway has BACnet on one side and non-BACnet (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”

23 09 23 - 12 without confirmation of receipt. Transmission Control Protocol (TCP) establishes "sessions", which have end-to-end confirmation and guaranteed sequence of delivery.

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. Native BACnet Device: A device that uses BACnet as its primary method of communication with other BACnet devices without intermediary gateways. A system that uses native BACnet devices at all levels is a native BACnet system.

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

QQ. Object: The concept of organizing BACnet information into standard components with various associated properties. Examples include analog input objects and binary output objects.

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

SS. 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.

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

UU. 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.

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

WW. 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.

XX. PICS: Protocol Implementation Conformance Statement, describing the

BACnet capabilities of a device. All BACnet devices have published

PICS.

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

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

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

LAN to a BACnet MS/TP LAN.

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

CCC. 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 installation, and commissioning of the system. The controls subcontractor shall be in the business of 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 DDC 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

23 09 23 - 14 that the Department of Veterans Affairs (VA) representative would observe the control systems in full operation.

4. Not Used.

5. The controls subcontractor shall have minimum of ten years experience in installation of building automation systems similar in performance to those specified for this project. 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 five years. Verify final requirements with VA COR prior to submitting for approval/acceptance.

6. Not Used.

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.

1.5 PERFORMANCE

A. 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 mN4imum 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.

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.

23 09 23 - 15

5. Alarm Response Time: The mN4imum 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 ±0.5C (±1F)

Ducted air temperature ±0.5C [±1F]

Outdoor air temperature ±1.0C [±2F]

Dew Point ±1.5C [±3F]

Water temperature ±0.5C [±1F]

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

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

23 09 23 - 16

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 shall allow for at least the points indicated on the points lists on the drawings. If not noted, provide all points per manufacturer or as approved by the VA

COR.

1.6 WARRANTY

A. Labor and materials for control systems shall be warranted for a period as specified under Warranty in FAR clause 52.246-21.

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:

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

23 09 23 - 17 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, meters, 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 VA approved to be 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 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. Furnish a BACnet Protocol Implementation Conformance Statement

(PICS) for each BACnet-compliant device.

9. 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.

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.

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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. Not Used.

C. Product Certificates: Compliance with QUALITY ASSURANCE specification.

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. Not Used.

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.

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

23 09 23 - 19 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 COR 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.

1. Informal instructions to the VA facilities personnel for 2 hours conducted sometime between the completed installation and prior to the performance test period of the control system at dates/times mutually agreeable to the Contractor and the VA COR.

2. Formal instructions: This 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 daily during start-up and checkout period.

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 formal training.

4. Training shall be given by direct employees of the controls system subcontractor qualified and knowledgeable in all aspects of all systems in this project.

1.9 PROJECT CONDITIONS (ENVIRONMENTAL CONDITIONS OF OPERATION)

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

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

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.

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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):

Standard 135-10.........BACNET Building Automation and Control Networks

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) 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

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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. 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:

a. A portable operator’s terminal.

b. Nor Used.

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

d. Active processing BACnet-compliant building controllers connected to other BACNet-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 BACnet communications protocol operating over a standard Ethernet LAN and operate at a minimum speed of 100 Mb/sec.

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2. The network shall utilize only copper and optical fiber communication media as appropriate and shall comply with applicable codes, ordinances and regulations. They may also utilize digital wireless technologies as appropriate to the application and if approved by the VA.

D. Third Party Interfaces:

1. The contractor shall include necessary hardware, equipment, software and programming to allow data communications between the controls systems and building systems supplied by all/other trades.

2. Other manufacturers and contractors supplying other associated systems and equipment shall provide their necessary hardware, software and start-up and shall cooperate fully with the contractor in a timely manner to ensure complete functional integration.

2.3 COMMUNICATION

A. Control products, communication media, connectors, repeaters, hubs, and routers shall comprise a BACnet internetwork. Controller and operator interface communication shall conform to ANSI/ASHRAE Standard 135-2008, BACnet.

1. The Data link / physical layer protocol (for communication) acceptable to the VA throughout its facilities is Ethernet (ISO

8802-3) and BACnet/IP.

2. The MS/TP data link / physical layer protocol is acceptable to the

VA in any new BACnet network or sub-network in its healthcare or lab facilities.

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

23 09 23 - 23 operation. An authorized operator shall be able to edit cross-controller links by typing a standard object address.

D. 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.

E. Controllers with real-time clocks shall use the BACnet 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.

2.4 ENGINEERING CONTROL CENTER (ECC) – NOT USED

2.5 PORTABLE OPERATOR’S TERMINAL (POT)

A. Provide a portable operator’s terminal (POT) that shall be capable of accessing all system data. POT may be connected to any point on the system network or may be connected directly to any controller for programming, setup, and troubleshooting. POT shall communicate using

BACnet protocol. POT may be connected to any point on the system network or it may be connected directly to controllers using the BACnet

PTP (Point-To-Point) Data Link/ Physical layer protocol. The terminal shall use the Read (Initiate) and Write (Execute) BACnet Services. POT shall be a notebook or tablet-style PC including all software and hardware required. This will be demonstrated to the VA COR or VA representative for required functions above prior to VA accepting for turn-over.

B. Hardware: POT shall conform to the BACnet Advanced Workstation (B-AWS)

Profile and shall be BTL-Listed as a B-AWS device.

1. POT shall be commercial standard with supporting 64-bit hardware (as limited by the direct-digital control system software) and software enterprise server. Internet Explorer v11.0 SP1 or higher, Windows

Script Hosting version 5.6 or higher, Windows Message Queuing, Windows Internet Information Services (IIS) v5.0 or higher, minimum i7 Pentium processor, minimum 1 TB SSD hard drive, minimum 16GB DDR5

SDRAM (minimum 1333 Mhz) memory, 2GB video card, minimum 16-inch

(diagonal) screen, 10-100-1000 Base-TX Ethernet NIC with an RJ45 connector or a 100Base-FX Ethernet NIC with an SC/ST connector an

ASCII RS-232 interface.

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C. Software: POT shall include software equal to the software on the ECC and shall include software to connect/modify any terminal controller and network panels installed under the project.

2.6 BACNET PROTOCOL ANALYZER

A. For ease of troubleshooting and maintenance, provide a BACnet protocol analyzer. Provide its associated fittings, cables and appurtenances, for connection to the communications network. The BACnet protocol analyzer shall be able to, at a minimum: capture and store to a file all data traffic on all network levels; measure bandwidth usage; filter out (ignore) selected traffic.

2.7 NETWORK AND DEVICE NAMING CONVENTION

A. Network Numbers

1. BACnet 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. BACnet allows 65535 network numbers per BACnet internet work.

2. The network numbers are thus formed as follows: "Net #" = "FFFNN" where:

a. FFF = Facility code (see below)

b. NN = 00-99 This allows up to 100 networks per facility or building

B. Device Instances

1. BACnet allows 4194305 unique device instances per BACnet internet work. Using Agency's unique device instances are formed as follows:

"Dev #" = "FFFNNDD" where

a. FFF and N are as above and

b. DD = 00-99, this allows up to 100 devices per network.

2. Note Special cases, where the network architecture of limiting device numbering to DD causes excessive subnet works. The device number can be expanded to DDD and the network number N can become a single digit. In NO case shall the network number N and the device number D exceed 4 digits.

3. Facility code assignments:

4. 000-400 Building/facility number

5. Note that some facilities have a facility code with an alphabetic suffix to denote wings, related structures, etc. The suffix will be

23 09 23 - 25 ignored. Network numbers for facility codes above 400 will be assigned in the range 000-399.

C. Device Names

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". These names should be used for the value of the

"Object_Name" property of the BACnet Device objects of the controllers involved so that the BACnet name and the EMCS name are the same.

2.8 BACNET DEVICES

A. All BACnet Devices – controllers, gateways, routers, actuators and sensors shall conform to BACnet Device Profiles and shall be BACnet

Testing Laboratories (BTL) -Listed as conforming to those Device

Profiles. Protocol Implementation Conformance Statements (PICSs), describing the BACnet capabilities of the Devices shall be published and available of the Devices through links in the BTL website.

1. BACnet Building Controllers, historically referred to as NACs, shall conform to the BACnet B-BC Device Profile, and shall be BTL-Listed as conforming to the B-BC Device Profile. The Device’s PICS shall be submitted.

2. BACnet Advanced Application Controllers shall conform to the BACnet

B-AAC Device Profile, and shall be BTL-Listed as conforming to the

B-AAC Device Profile. The Device’s PICS shall be submitted.

3. BACnet Application Specific Controllers shall conform to the BACnet

B-ASC Device Profile, and shall be BTL-Listed as conforming to the

B-ASC Device Profile. The Device’s PICS shall be submitted.

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4. BACnet Smart Actuators shall conform to the BACnet B-SA Device

Profile, and shall be BTL-Listed as conforming to the B-SA Device

Profile. The Device’s PICS shall be submitted.

5. BACnet Smart Sensors shall conform to the BACnet B-SS Device

Profile, and shall be BTL-Listed as conforming to the B-SS Device

Profile. The Device’s PICS shall be submitted.

6. BACnet routers and gateways shall conform to the BACnet B-OTH Device

Prof…