revised_ Attachment A- 230923 Direct Digital Control System for HVAC_01.docx

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 by the project documents, system point list, drawings and as described in the scope of work and specifications. Include a complete and working direct-digital control system. Include all engineering, configuration/setup hardware and software, programming, controls and installation materials, installation labor, commissioning and start-up, training, final project documentation, certification and warranty.

1. The direct-digital control system(s) shall consist of high-speed, peer-to-peer network of DDC controllers, control system server(s), and two (2) Engineering Control Centers. Provide ten (10) remote users using a standard secure web browser to access the control system graphics and change adjustable setpoints with the proper password.

2. The direct-digital control system(s) shall be 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 or specifically requested otherwise by the contractor. Browsers shall not require the use of an extension or add on software in order to access aforementioned workstations, controllers, devices, and components. Web page software shall not require any recurring fees or licensing. The Web page host must be able to support simultaneous users with the ability to expand the system to accommodate an unlimited number of users.

a. Only if necessary/allowed, gateways shall be BTL listed and support the ASHRAE Standard 135 BACnet communications protocol.

b. Only if necessary/allowed, gateways shall provide all object properties and read/write services.

3. The work administered by this Section of the technical specifications shall include all labor, materials, special tools, equipment, enclosures, control panels and panel components, conversion modules, 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, and specified services and items required for complete and fully functional Controls Systems.

4. The control systems shall be designed such that each mechanical system shall operate under stand-alone mode. The contractor administered by this Controls Section of the technical specifications shall provide controllers for each mechanical 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.

a. Program database, data acquisition, and all control sequence logic shall reside in each DDC Device. The Building Level Communication Network (BLCN)/BAS shall not be dependent upon connection to a Server or Master Controller for performance of the Sequence of Control as outlined in this specification. Each individual Device shall, to the greatest possible extent, perform its programmed sequence without reliance on the BLCN.

5. The control system shall accommodate two (2) Engineering Control Center(s) [Boiler Plant Operator Room and Room D-72], each with 2 Operator Workstations (B-OWS), as well as 3 additional Operator Workstations (B-OWS) as identified on the drawings and the control system shall accommodate ten (10) web-based Users simultaneously, and the access to the system should be limited only by operator password.

B. Some products are furnished but not installed 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 installation of the products. These products include the following:

1. Control valves.

2. Flow switches.

3. Flow meters.

4. Sensor wells and sockets in piping.

5. Terminal unit controllers.

C. Some products are installed but not furnished 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 procurement of the products. These products include the following:

1. 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 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, but are not limited to, items such as 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. Advanced utility metering systems. These systems may take information from the control system or its component meters and sensors. There is no command or control action from the advanced utility monitoring system on the control system however.

3. Boiler and/or chiller controls. These controls, if not native BACnet, will require a BACnet Gateway.

4. Terminal units’ velocity sensors

5. Condenser water quality systems: condenser water high- and low-parts hydrogen (pH) alarms.

6. 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.

d. Setpoint reset.

e. Time of day indexing.

f. Status alarm.

7. Steam trap monitoring system: Monitoring and alarms shall be connected to the ECC via BACnet.

8. Variable frequency drives. These controls, if not native BACnet, will require a BACnet Gateway.

9. 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. Process and food service coolers, refrigerators and freezers: in patient nutrition kitchens, blood banks, mortuaries, and pharmacies: high temperature, trending and status alarms.

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

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

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

f. Emergency generators: status alarms.

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

h. Pneumatic tube systems: status alarms.

i. Elevators: status alarms.

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

k. Fume hoods and biological safety cabinets: status alarms

l. Isolation rooms: pressure outside of acceptable limit alarms.

E. Examples of existing system monitored/controlled items to be integrated by the contractor are as follows:

Work/Item/System

Controllers for terminal units

Automatic dampers

Automatic damper actuators

Automatic valves

Pipe insertion devices and taps, flow and pressure stations.

Thermowells

Current Switches

Control Relays

Power distribution system monitoring interfaces

Interface with chiller/boiler controls

Chiller/boiler controls interface with control system

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

Smoke detectors

Fire/Smoke Dampers

Smoke Dampers

Fire Dampers

Chiller/starter interlock wiring

Chiller Flow Switches

Boiler interlock wiring

Boiler Flow Switches

Water treatment system

VFD’s

Refrigerant monitors

Laboratory Environmental Controls

Fume hood controls

Medical gas alarms

Laboratory Air Valves

Computer Room A/C Unit field-mounted controls

Control system interface with CRU A/C controls

CRU A/C unit controls interface with control system

Fire Alarm shutdown relay interlock wiring

Control system monitoring of fire alarm smoke control relay

Fire-fighter’s smoke control station (FSCS)

Fan Coil Unit controls

Unit Heater controls

Packaged RTU space-mounted controls

Packaged RTU unit-mounted controls

Cooling Tower Vibration Switches

Cooling Tower Level Control Devices

Cooling Tower makeup water control devices

Starters, HOA switches

F. The facility’s existing direct-digital control systems are manufactured by Siemens Building Technologies, Honeywell International Inc., and Alerton. There are two (2) existing ECC’s; one is located at the facility’s main ECC in Room D-72; the second in the Boiler Plant Control Room. The existing system’s ECC and top-end controllers were installed at different times over the years as renovation and upgrade projects were implemented. The contractor administered by this Section of the technical specifications shall observe, and understand, the capabilities, communication network, services, spare capacity of the existing control system and its ECC prior to beginning work.

1. Provide and install new, unified (one provider/manufacturer) native BACnet network, ECC, and graphics, with communications networking and controllers as needed. Install a new fiber optic backbone serving all fan/mechanical/equipment rooms. Replace any non-BACnet panels and controllers. Provide a programmable internetworking gateway allowing for real-time communication between the existing direct-digital control system and the new BACnet control system. Real-time communication shall provide all object properties and read/write services. The contractor administered by this Section of the technical specifications shall provide all necessary investigation and site-specific programming.

a. The combined system shall operate and function as one complete system including one database of control point objects and global control logic capabilities. Facility operators shall have complete operations and control capability over all systems, new and existing including, but not limited to, monitoring, trending, graphing, scheduling, alarm management, global point sharing, global strategy deployment, graphical operations interface and custom reporting as specified.

2. After the new ECC network and fiber backbone is online, tested and effectively controlling and monitoring the building equipment, remove existing direct-digital control system ECC and communications network (conduit risers and conduit above ceiling can remain). Temporarily support (control locally or in-hand) existing AHUs and equipment, while panels are being swapped out. Transition one equipment system at a time and systematically work to complete one mechanical room at a time. Building service equipment should be controlling from the new panel and back on the network, tested, and controlling equipment within three (3) days.

3. Upgrade the existing direct-digital control system’s ECC to include all properties and services required by an ASHRAE Standard 135 BACnet B-AWS Profile. The upgraded ECC shall continue to communicate with the existing direct-digital control system’s devices. The upgraded ECC shall communicate directly with the new native BACnet devices over the existing control system’s communications network without the use of a gateway. Provide programming converting the existing analog non-BACnet devices, objects and services to ASHRAE Standard 135 BACnet-complaint BIBBs.

a. The performance requirement for the combined system: the combined system shall operate and function as one complete system including one database of control point objects and global control logic capabilities. Facility operators shall have complete operations and control capability over all systems, new and existing including, but not limited to, monitoring, trending, graphing, scheduling, alarm management, global point sharing, global strategy deployment, graphical operations interface and custom reporting as specified.

1. This campus is standardizing on a standard ASHRAE Standard 135, BACnet/IP Control System, but currently has 3 head-end systems, Siemens (BACnet), Alerton (BACnet), and Honeywell (Non-BACnet and BACnet). Each system is supported by the corresponding controls service company/provider. The contractor administered by this Controls Section and the associated fiber backbone section of the technical specifications shall coordinate and is responsible for all new graphics work with the Control System, including the adaptation/integration of all existing system components (equipment, devices, points, Notifier fire alarm, chiller optimization, boiler controls, etc.). The contractor administered by this Section of the technical specifications shall integrate the existing three (3) control systems into one unified ASHRAE Standard 135, BACnet/IP control network with two (2) ECC’s and seven (7) Operator workstations (OWS).

2. The contractor administered by this Controls Section and associated fiber backbone Section of the technical specifications shall provide a peer-to-peer networked, stand-alone, distributed DDC control system, including seven (7) operator workstations (B-OWS), one portable operator workstation (laptop/P-OWS), ten (10) remote access workstations with all new graphics, microprocessor-based controllers, instrumentation, end control devices, fiber optic backbone, cabling/wiring, piping, software, and related components for a complete, working system. The contractor shall integrate all existing equipment/devices/points on the existing system and is responsible for any work to connect existing devices including conversion or replacement.

3. The work items include (but are not limited to) the following:

Item/Task

ECC expansion and conversion

ECC programming

Devices, controllers, control panels and equipment

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

Point mapping

Network Programming

ECC Graphics

Controller programming and sequences

Integrity of LAN communications

Electrical wiring

Operator system training

LAN connections to devices

LAN connections to ECC

Secure WAN connection/operability for future remote buildings

IP Addresses

Fiber optic Backbone

Overall system verification, tuning, testing

System commissioning activities

Controller and LAN system verification

H. Unitary standalone systems including (but not limited to) 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. Actuation of control devices shall be electronic. Spring return fail-safe actuation shall be provided when loss of property and/or property damage is possible and where specified. 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 01 91 00, General Commissioning Requirements.

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

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

D. Section 26 05 21, Low-Voltage Electrical Power Conductors and Cables (600 Volts and Below).Section 26 05 26, Grounding and Bonding for Electrical Systems.

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

F. Section 26 09 23, Lighting Controls.

G. Section 26 27 26, Wiring Devices.

H. Section 27 08 00, Commissioning of Communication Systems.

I. Section 27 15 00, Communications Horizontal Cabling J. Section 28 31 00, Fire Detection and Alarm.

1.3 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. BACnet: A Data Communication Protocol for Building Automation and Control Networks, ANSI/ASHRAE Standard 135. This communications 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 Operators Workstation (B-OWS): an operator interface used for monitoring and basic control of a system. See Section for further detail.

I. BACnet Segment: One or more physical segments of BACnet devices on a BACnet network, connected at the physical layer by repeaters.

J. 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.

K. 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.

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

M. 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).

N. 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.

O. 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.

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

Q. 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 R. 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).

S. Device: a control system component that contains a BACnet Device Object and uses BACnet to communicate with other devices.

T. 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.

U. 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.

V. 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.

W. 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.

X. 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.

Y. 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.

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

AA. 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.

AB. 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.

AC. 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.

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

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

AF. 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.

AG. GIF: Abbreviation of Graphic interchange format.

AH. 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.

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

AJ. 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.

AK. 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.

AL. JPEG: A standardized image compression mechanism stands for Joint Photographic Experts Group, the original name of the committee that wrote the standard.

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

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

AO. 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.

AP. 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.

AQ. 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.

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

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

AT. 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.

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

AV. 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.

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

AX. 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.

AY. PICS: Protocol Implementation Conformance Statement, describing the BACnet capabilities of a device. All BACnet devices have published PICS.

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

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

BB. 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.

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

BD. 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, integration, communication/connectivity and commissioning activities of the entire 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 (5) similar (in scale and price) facility wide system upgrade projects in the past 7 years which have building control systems as specified in this Section. One similar project must have replaced multiple head-end control systems/providers, providing a unified head-end/graphics, replaced panels facility-wide while integrating devices (including existing non-BACnet devices) and subsystems (such as boilers, chillers, chiller optimization, fire alarm, etc.). These projects must be on-line and functional such that the Department of Veterans Affairs (VA) representative could observe the cited control systems in full operation. Contractor shall provide this information at the time of the bid.

4. Prior to bid date, the controls subcontractor shall have an in-place facility within 100 miles of project location and provide a maximum two (2) hour response time to address project issues. Facility must be in place until the completion of the warranty period with technical staff, spare parts inventory for the next five (5) years, and necessary test and diagnostic equipment to support the control systems. Contractor shall provide this information at the time of the bid.

5. The controls subcontractor shall have minimum of five (5) 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 (3) three years. Supervisory personnel and design engineer(s) must have minimum five (5) years’ experience. Failure to disclose this information will be a ground for disqualification of the supplier.

6. Controls Contractor shall be a factory certified contractor specializing and experienced in BAS installations and with experience in networked microprocessor based commercial HVAC, building and enterprise level control systems. Contractor shall use technicians and application engineers certified by the manufacturer in the installation, configuration, programming and service of the BAS products.

7. The controls contractor must have the ability to provide a 3-year service contract (5 8-hour days per week), with five (5) option years. The cost for the first-year service contract shall be included with the contractor’s bid.

8. 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. The completed and operational BAS shall be in compliance with and meet the requirements of all governing bodies, Authorities Having Jurisdiction (AHJ), applicable local or national standards and codes, except where more stringent or detailed requirements are indicated by the Contract Documents, including the requirements set forth in this Specification and the following:

a. American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE)

1) ASHRAE 135-2008: BACnet – Building Automation and Control Networking Protocol

b. National Institute of Standards and Technology (NIST)

1) NIST IR 6392 Annex B: Profiles of Standard BACnet Devices

c. Underwriters Laboratories (UL)

1) UL 916: Energy Management Systems (EMS)

2) UUKL-UL 864: Control Units and Accessories for Fire Alarm Systems

d. Institute of Electrical and Electronic Engineers (IEEE)

1) IEEE 142: Recommended Practice for Grounding of Industrial and Commercial Power Systems

e. Electronics Industries Association (EIA)

1) EIA-232: Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange

2) EIA-485: Standard for Electrical Characteristics of Generator and Receivers for Use in Balanced Digital Mutli-Point System

f. Federal Communications Commission (FCC)

1) Part J: Class “A” Applications

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. 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 eight (8) 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.

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 workstation 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 six (6) seconds.

6. Program Execution Frequency: Custom and standard applications shall be capable of running as often as once every five (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:

Note 1: For both absolute and differential pressure, Control stability and accuracy: Control sequences shall maintain measured variable at setpoint within the following tolerances:

0–1.5 kPa (0–6 in. w.g.)

(-0.1 to 0.1 in. w.g.)

0–1 MPa (1–150 psi)

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

a. Overall combined system repeatability of sensors, controllers and readout devices for a particular application shall be plus or minus 2% of full scale of the operating range. Repeatability of overall combined system of sensor, controller and readout device in a control loop application will be plus or minus 5% of full scale of the operating range.

10. The system provided shall be expandable to at least 500,000 hard points without additional database licensing fees, or replacing any devices, software or wiring provided herein.

11. All components provided as part of this system shall operate under ambient environmental conditions of 0°C (32°F) to 40°C (104°F) dry bulb and 10% to 90% relative humidity, non-condensing as a minimum. Sensors and control elements shall operate under the ambient environmental temperature, pressure, humidity, and vibration conditions encountered for the installed location. B-OWS equipment (hardware only), such as CRTs and printers, shall, unless designated otherwise, operate properly under ambient environmental conditions of 7°C (45°F) to 32°C (90°F) and a relative humidity of 10% to 90%.

12. Networked components of the system shall be able to operate at 90% to 110% of nominal voltage rating and shall perform an orderly shutdown below 80%.

1.6 Warranty

A. Labor and materials for control systems shall be warranted for a period of one (1) year 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. The on-line support service shall allow the Controls supplier to dial out over telephone lines to or connect via (through password-limited access) VPN through the internet monitor and control the facility’s building automation system. This remote connection to the facility shall be within two (2) hours of the time that the problem is reported. This coverage shall be extended to include normal business hours, after business hours, weekend and holidays. If the problem cannot be resolved with on-line support services, the Controls supplier shall dispatch the qualified personnel to the job site to resolve the problem within 24 hours after the problem is reported.

D. Controls and Instrumentation subcontractor shall be responsible for temporary operations and maintenance of the control systems during the construction period until commissioning as well as training of facility operators is completed and acceptance of the project by VA.

E. During the installation warranty period the Contractor shall provide all labor and materials required to repair or to replace all items or components that fail due to defects in workmanship or manufacture at no charge or reduction in service to the Owner.

F. Except in the event of property loss, damage, or facility emergency, warranty service shall be provided during regular working hours Monday through Friday at no charge unless otherwise explicitly outlined in the Contract Documents.

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 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. 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.

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. Validation Test Plan: Along with manufacturer’s literature, product certificates, wiring and functional diagrams, and sequence of operations, submit for review and approval a Validation Test Plan which is specific to the work of this project and which references the specific controls component nomenclatures found in the control contractor’s wiring and functional diagrams and the specific sequences of controls for this project and which describes how the contractor will implement the controls system validation and demonstration as specified in paragraph 3.2 SYSTEM VALIDATION AND DEMONSTRATION found in this section.

E. Licenses: Provide licenses for all software residing on and used by the Controls Systems and transfer these licenses to the Owner prior to completion.

F. 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) 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 .DXF format for the drawings noted in subparagraphs above.

G. 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 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.

H. Submit Performance Report to Contracting Officers Representative (COR) prior to final inspection.

1.8 INSTRUCTIONS/TRAINING

A. As a part of this contract, the BAS Contractor shall provide instruction on the adjustment, operation and maintenance of the BAS as installed including all hardware and software provided by a manufacturer-trained, competent application engineer and/or technician with sufficient experience in the installation, programming and operation of the BAS. All training equipment and material shall be provided by this Contractor.

B. Instructions to VA operations personnel: Perform in accordance with Scope of Work, and as noted below:

1. First Phase: Formal instructions to minimum of 2 VA facilities personnel for a total of 32 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.

2. Second Phase: This phase of training shall comprise of on the job training during start-up, checkout period, and performance test period. Minimum of 2 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. Training shall be scheduled within thirty (30) days of BAS Acceptance and shall consist of a 1-day operational training program for up to 4 operators at the discretion of the owner/COR. A training day shall be defined as an 8-hour day of instruction Monday through Friday during regular working hours, including two (2) 15-minute breaks and excluding lunchtime and travel.

5. One (1) day of on-site training shall cover the entire execution of the complete BAS and components. Training shall be performed on the Owner’s BAS and shall include:

1. Location of all Temperature Control Panels, Control Enclosures, controllers, devices, sensors, thermostats, etc.

2. Equipment Layout

3. Sequences of Operation

4. Maintenance and Repair

5. Troubleshooting

6. Preventative Maintenance

7. Sensor Calibration

8. Proper Use of Service Tools and Materials

6. At the discretion of the Owner, on-site training and installed system demonstration sessions may be video-taped.

1. Provide digital video and audio recording of each training session. Create separate recording file for each session.

2. Stamp each recording file with training session number, session name, and date.

3. Provide Owner with two copies of digital files on cloud and flash drives for later reference and for use in future training.

4. Owner retains right to make additional copies for intended training purposes without having to pay royalties.

7. Instructor shall provide one (1) copy of training materials for each attendee at the time of the training. Two (2) additional copies of training materials shall be provided to Owner at time of training at the request of the Owner for archival. Training materials shall include:

1. Agenda

2. Defined objectives for each lesson

3. Copies of audio-visuals and/or Power Point Presentations

1.9 project CONDITIONS (Environmental Conditions of Operation) A. The ECC and associated 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. The Controllers used outdoors shall be mounted in NEMA 4 waterproof enclosures, and shall be rated for operation at –40 to 65C (-40 to 150F).

1. Enclosures shall have hinged, locking doors.

2. Provide laminated plastic nameplates for all enclosures in any mechanical room or electrical room. Include location and unit served on nameplate. Laminated plastic shall be 0.125 inches thick and appropriately sized to make label easy to read.

C. All electronic equipment…