S02. Specs - 230923 Direct-Digital Control System for HVAC_Amended (4-30-21).pdf

Louis Stokes Cleveland VAMC 09-11

Renovate Radiation Therapy

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SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and

Supplementary Conditions Specification Sections, apply to this Section.

B. The VAMC’s Owner’s Project Requirement (OPR) documents provide additional graphical schematics to delineate responsibilities for

Technical Services provided by the VAMC’s Systems Integrator (SIP) and the Design-Builder’s Installation teams for Temperature control-related

Scopes of Work.

1. Refer to Section 250900 for Descriptions of OPEN Systems Integration

Services being provided directly to the VAMC via the Systems

Integration & Integrated Commissioning Provider, (AGM Energy

Services). These services include, but are not limited to:

a. Systems Integration equipment: OPEN Controllers (JACE), Energy

Meters, Lighting Control Panels, System/Network Computers, Workstation peripherals, etc.

b. Software: OPEN System/Network-based, Lighting Control, IT Plug

Load Management, Data collection and management scheduling, Digital Signage interfaces, etc.

c. Programming: Master level, Scheduling, Alarm Console, Energy Data

& Graphing, etc.

d. IT Systems Communication: Coordinating OPEN Control & Unitary

Control interfaces with VAMC’s Network.

e. Graphical Screens: Operational Screens & Human-Machine Interface setups, etc.

f. Training: Specific to OPEN Integration (non-Unitary) portions of

Network.

g. Commissioning Services: Evaluation, Assurance & Documentation that intended integrations from Unitary Controls by Design-

Builder are reporting and functioning as intended at Master

Network/Supervisory-level.

1.2 RELATED WORK

A. Section 23 05 93, TESTING, ADJUSTING, AND BALANCING FOR HVAC.

B. Section 25 09 00, SYSTEMS INTEGRATION.

C. Section 26 05 11, REQUIREMENTS FOR ELECTRICAL INSTALLATIONS.

D. Section 26 05 21, LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES.

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E. Section 26 05 33, RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS.

F. Section 26 27 26, WIRING DEVICES.

1.3 DEFINITIONS

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

C. 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.

D. 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.

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

F. 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.

G. BACNet Segment: One or more physical segments of BACNet devices on a

BACNet network, connected at the physical layer by repeaters.

H. 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.

I. 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.

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

K. 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).

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L. 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.

M. 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.

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

O. 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

P. 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).

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

R. 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.

S. 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.

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

U. 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.

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V. 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.

W. 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.

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

Y. 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.

Z. 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.

AA. 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.

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

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

DD. 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.

EE. GIF: Abbreviation of Graphic interchange format.

FF. 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.

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

HH. 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.

II. 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.

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

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

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

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

MM. 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.

NN. 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.

OO. 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.

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

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

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

Objects are controlled by reading from and writing to object properties.

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

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

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

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

WW. PICS: Protocol Implementation Conformance Statement, describing the

BACNet capabilities of a device. All BACNet devices have published

PICS.

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

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

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

LAN to a BACNet MS/TP LAN.

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

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

1.4 QUALITY ASSURANCE

A. Criteria:

1. The core control system equipment shall be integratable by open protocol with the existing smart building network/Tridium controls system. Compatibility includes communication between existing and

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

3. The Design-builder’s controls subcontractor shall have an in-place facility within 50 miles with technical staff, applicable spare parts inventory for the next five (5) years, and necessary test and diagnostic equipment to support the control systems specified.

4. The Design-builder’s controls subcontractor shall have minimum of five years’ experience in design and installation of building automation systems similar in performance to those specified in this

Section. Provide evidence of experience by submitting resumes of the project manager, the local branch manager, project engineer, the application engineering staff, and the electronic technicians who would be involved with the supervision, the engineering, and the installation of the control systems. Training and experience of these personnel shall not be less than three years. Failure to disclose this information will be a ground for disqualification of the supplier.

5. Design-builder’s controls subcontractor ahall 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. The project manager will serve as main contact to VA’s system integrator.

B. Codes and Standards:

1. All work shall conform to the applicable Codes and Standards including but not limited to the following:

a. UL-916 Energy Management Systems

b. FCC, Part 15, Subpart J, Class A Computing Devices.

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2. Electronic equipment shall conform to the requirements of FCC

Regulation, Part 15, Governing Radio Frequency Electromagnetic

Interference, and be so labeled.

1.5 SUMMARY

A. Furnish all labor, materials, equipment, and service necessary for a complete and operating Temperature Control System (TCS), utilizing

Direct Digital Controls as shown on the drawings and as described herein. Drawings are diagrammatic only.

1. This to include necessary labor and materials to comply with the Cx

Commissioning efforts as required (communication coordination &

Functional Testing). TCS supplier commissioning activities are to be included in this specification section’s activities and are non-compensable and cannot be a cause for delay claims.

2. This to include necessary labor and materials to completely install equipment provided by VAMC to the Design-Builder via the OPEN

Systems Integration Provider.

1.6 SYSTEM DESCRIPTION

A. The entire Temperature Control System (TCS) shall be comprised of a network of interoperable, stand-alone digital controllers communicating via current BacNet™ communication protocols to a Java Application

Control Engine (JACE) N4 platform provided under division 250900 OPEN

SYSTEMS INTEGRATION (By AGM Energy Services direct to VAMC coordinated with Design-Build Contractor).

1. Refer to specifications for additional Work-Scope and Project intent descriptions.

2. Refer to VAMC Standards for accompanying requirements related to ancillary control systems components.

1.7 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide

Schneider EcoStruxure Controls-related products and services, Installed

& Serviced by Schneider EcoStruxure designated branch.

1.8 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 by the Controls and Instrumentation subcontractor.

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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 is completed.

1.9 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. 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.

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

6. Furnish a BACNet Protocol Implementation Conformance Statement

(PICS) for each BACNet-compliant device.

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7. 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.

8. 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.

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

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

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

12. 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. As Built Control Drawings:

1. Furnish three (3) copies of as-built drawings for each control system. The documents shall be submitted for approval prior to final completion.

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

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

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

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b. One copy of the final version of all software provided including operating systems and programming language.

c. Complete troubleshooting procedures and guidelines for all systems.

d. Complete operating instructions for all systems.

e. 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.

f. 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.

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

F. Submit Performance Report to COR prior to final inspection.

1.10 DIVISION OF WORK

A. The Section 230923 (TCC) contractor shall be responsible for all ancillary control devices, required fabricated control panels, any unitary/non-applied controller programming, unitary/non-applied controller programming software, controller input/output and power wiring, controller network wiring and TCC BacNet network wiring and connections to the Java Application Control Engine (JACE) N4, (applies to ALL required wiring scopes)

B. The Section 250900 (SIP) Systems Integration Provider shall be responsible for the Java Application Control Engine (JACE) N4 components & software and programming of the JACEs, graphical user interface software (GUI), development of all graphical screens, setup of schedules, logs and alarms, BacNet(tm) network management as required to interface the JACE to the TCS network, global supervisory control applications, system integration and coordination and connection of the JACE to the local or wide area network. The VAMC’s

Systems Integrator will provide the JACE(s) and utility meter/monitor(s) to the Design-Builder for field installation.

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1.11 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. First Phase: Formal instructions to the VA facilities personnel for a total of 40 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. VA facilities personnel will work with the Contractor’s installation and test personnel on a daily basis during start-up and checkout period. During the performance test period, controls subcontractor will provide 32 hours of instructions, given in multiple training sessions (each no longer than four hours in length), to the VA facilities personnel.

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

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

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

1.12 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):

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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):

70-20...................National Electric Code

90A-21..................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

PART 2 – PRODUCTS

2.1 GENERAL

A. The Temperature Control System (TCS) shall be comprised of a network of interoperable, stand-alone digital controllers provided by the

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2.2 OPEN, INTEROPERABLE, INTEGRATED ARCHITECTURES

A. The intent of this specification is to provide a peer-to-peer networked, stand-alone, distributed control system with the capability to integrate both the ANSI/ASHRAE Standard 135-1995 BACnet technology communication protocols, delivered by the noted combination of the

VAMC’s Systems Integrator (AGM Energy Services) and Design-Builder provided field/unitary control components provided by the Mechanical

Contractor/Electrical Contractor.

2.3 ANCILLARY CONTROL SYSTEM HARDWARE

A. Outside Airflow Measuring Stations shall be TEK-AIR model IAQ-2000 or equal by Ebtron or Paragon. Furnish and install complete with all labor and materials including Airstreams probes, Transducer, and

Microprocessor.

B. Local Control Panels: Unitized NEMA 1 cabinet with suitable brackets for wall or floor mounting, located adjacent to each system under automatic control. Provide common keying for all panels.

1. Fabricate panels of 0.06-inch thick, furniture-quality steel, or extruded-aluminum alloy, totally enclosed, with hinged doors and keyed lock and with manufacturer's standard shop-painted finish.

2. Interconnections between internal and face-mounted devices pre-wired with color- coded stranded conductors neatly installed in plastic troughs and/or tie-wrapped. Terminals for field connections shall be

UL Listed for 600 volt service, individually identified per control/interlock drawings, with adequate clearance for field wiring. Control terminations for field connection shall be individually identified per control drawings.

3. Door-Mounted Equipment: Flush-mount (on hinged door) manual switches, including damper-positioning switches, changeover switches, thermometers, and gages.

4. Provide ON/OFF power switch with over-current protection for control power sources to each local panel.

C. Sensors:

1. Electronic Temperature Sensors: Vibration and corrosion resistant;

for wall, immersion, or duct mounting as required.

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2. Resistance Temperature Detectors: Platinum, thermistor, or balco

a. Accuracy: Plus or minus 0.2 percent at calibration point;

thermistors shall have a maximum 5 year drift of no more than

.225°F maximum error of no more than 36°F

b. Wire: Twisted, shielded-pair cable

c. Insertion Elements in Ducts: Single point, 6 inches long; use where not affected by temperature stratification or where ducts are smaller than 4 sq. ft.

d. Averaging Elements in Ducts: 60 inches, long, flexible for use where prone to temperature stratification or where ducts are larger than 4 sq. ft.; 264 inches long, flexible for use where prone to temperature stratification or where ducts are larger than 16 sq. ft; length as required.

e. Insertion Elements for Liquids: Brass socket with minimum insertion length of 2- 1/2 inches.

f. Outside-Air Sensors: Watertight inlet fitting, shielded from direct sunlight.

g. Room Security Sensors: Stainless steel cover plate with insulated back and security screws.

3. Humidity Sensors: Bulk polymer sensor element.

a. Accuracy: 2 percent at 10-90% RH with linear output.

b. Room Sensors: Range of 0 to 100 percent relative humidity

c. Duct and Outside-Air Sensors: With element guard and mounting plate, range of 0 to 100 percent relative humidity.

4. Static-Pressure Transmitter: Nondirectional sensor with suitable range for expected input, and temperature compensated.

a. Accuracy: +/- 1 percent of full scale with repeatability of 0.5 percent.

b. Output: 4 to 20 mA, 0-5 vDC, 0-10 vDC.

c. Building Static-Pressure Range: -.1 to .1, -0.25 to 0.25, -.5 to

.5, -1.0 to 1.0 IN WC., jumper selectable.

d. Duct Static-Pressure Range: 0 to 1, 0 to 2.5, 0 to 5, 0 to 10 IN

WC., jumper adjustable

5. Pressure Transmitters: Direct acting for gas, liquid, or steam service; range suitable for system; proportional output 4 to 20 mA.

D. Equipment operation sensors as follows:

1. Status Inputs for Fans: Differential-pressure switch with adjustable range of 0 to 5 IN WC.

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2. Status Inputs for Pumps: Differential-pressure switch piped across pump with adjustable pressure-differential range of 8 to 60 psig.

3. Status Inputs for Electric Motors: Current-sensing relay with current transformers, adjustable trip point, split core with an integral LED for trip indication and set to 175 percent of rated motor current.

E. Electronic Valve/Damper Position Indication: Visual scale indicating percent of travel and 2- to 10-V dc, feedback signal.

F. Water-Flow Switches: Pressure-flow switches of bellows actuated mercury or snap-acting type, with appropriate scale range and differential adjustment, with stainless steel or bronze paddle. For chilled water applications, provide vapor proof type.

G. Carbon-Monoxide Detectors: Single or multi-channel, dual-level detectors, using solid- state sensors with 3-year minimum life, maximum

15-minute sensor replacement, suitable over a temperature range of 23°F to 130°F, calibrated for 50 and 100 ppm, with maximum 120-second response time to 100-ppm carbon monoxide.

H. Carbon-Dioxide Sensor and Transmitter: Single detectors, using solid-state infrared sensors, suitable over a temperature range of 23°F to

130°F, calibrated for 0 to 2 percent, with continuous or averaged reading, 4 to 20 mA output, and wall mounted.

I. Oxygen Sensor and Transmitter: Single detectors, using solid-state zircon cell sensing, suitable over a temperature range of -32°F to

1100°F, calibrated for 0 to 5 percent, with continuous or averaged reading, 4 to 20 mA output, and wall mounted.

J. Refrigerant Detectors: Dual-level detectors, using solid-state sensors, with alarm preset for 300 ppm, alarm indicator light, alarm silence light and button, alarm test light and button, and trouble light.

Provide auxiliary relay preset for 150 ppm.

K. Occupancy Sensor: Passive infrared, with time delay, daylight sensor lockout, sensitivity control, and 180-degree field of view with vertical sensing adjustment, for flush mounting

L. Non-Unitary Thermostats:

1. Combination Thermostat and Fan Switches: Line-voltage thermostat with two-, three-, or four-position, push-button or lever-operated fan switch.

2. Label switches "FAN ON-OFF," "FAN HIGH-LOW-OFF," "FAN HIGH-MED-LOW-

OFF." Provide unit for mounting on two-gang switch box.

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M. Low-Voltage, On-Off Thermostats: NEMA DC 3, 24-V, bimetal-operated, mercury-switch type, with adjustable or fixed anticipation heater.

N. Line-Voltage, On-Off Thermostats: Bimetal-actuated, open contact or bellows-actuated, enclosed, snap-switch type, or equivalent solid-state type, with heat anticipator, integral manual on-off-auto selector switch.

1. Equip thermostats, which control electric heating loads directly, with off position on dial wired to break ungrounded conductors.

2. Dead Band: Maximum 2°F.

O. Remote-Bulb Thermostats: On-off or modulating type, liquid filled to compensate for changes in ambient temperature, with copper capillary and bulb, unless otherwise indicated.

1. Bulbs in water lines with separate wells of same material as bulb.

2. Bulbs in air ducts with flanges and shields.

3. Averaging Elements: Copper tubing with either single- or multiple-unit elements, extended to cover full width of duct or unit, adequately supported.

4. Scale settings and differential settings are clearly visible and adjustable from front of instrument.

5. On-Off Thermostat: With precision snap switches, with electrical ratings required by application.

6. Modulating Thermostats: Construct so complete potentiometer coil and wiper assembly is removable for inspection or replacement without disturbing calibration of instrument.

P. Fire-Protection Thermostats: UL listed with fixed or adjustable settings to operate at not less than 75°F above normal maximum operating temperature, with manual reset with control circuit arranged to directly shutdown appropriate equipment and provide remote annunciation at the GUI.

Q. Room Thermostat Cover Construction:

1. Set-Point Adjustment: Concealed or exposed

2. Set-Point Indication: Concealed or exposed

3. Thermometer: Optional

4. Color: Neutral

5. Orientation: Vertical or horizontal

R. Room thermostat accessories include the following:

1. Insulating Bases: For thermostats located on exterior walls.

2. Thermostat Guards: As specified in tamper prone areas

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3. Adjusting Key: As required for calibration and cover screws.

4. Set-Point Adjustment: 1/2-inch diameter, adjustment knob.

S. Electric Low-Limit Duct Thermostat: Snap-acting, single-pole, single-throw, manual- or automatic-reset switch that trips if temperature sensed across any 12 inches of bulb length is equal to or below set point.

1. Bulb Length: Minimum 20 feet

2. Quantity: One thermostat for every 20 sq. ft. of coil surface.

T. Electric High-Limit Duct Thermostat: Snap-acting, single-pole, single-throw, manual- or automatic-reset switch that trips if temperature sensed across any 12 inches of bulb length is equal to or above set point.

1. Bulb Length: Minimum 20 feet.

2. Quantity: One thermostat for every 20 sq. ft. of coil surface.

U. Heating/Cooling Valve-Top Thermostats: Proportional acting for proportional flow, molded-rubber diaphragm, remote-bulb liquid-filled element, direct and reverse acting at minimum shutoff pressure of 25 psig., and cast housing with position indicator and adjusting knob.

2.4 ACTUATORS

A. Electric Motors: Size to operate with sufficient reserve power to provide smooth modulating action or two-position action under all environmental conditions (temperature, low power voltage fluctuations, tight seal damper design, maximum air and water flow forces).

1. Permanent Split-Capacitor or Shaded-Pole Type: Gear trains completely oil immersed and sealed. Equip spring-return motors with integral spiral-spring mechanism in housings designed for easy removal for service or adjustment of limit switches, auxiliary switches, or feedback potentiometer.

2. Nonspring-Return Motors for Valves Larger Than NPS 2-1/2”: Size for running torque of 150 in. x lbf and breakaway torque of 300 in. x lbf.

3. Spring-Return Motors for Valves Larger Than NPS 2-1/2”: Size for running and breakaway torque of 150 in. x lbf.

4. Nonspring-Return Motors for Dampers Larger Than 25 Sq. Ft.: Size for running torque of 150 in. x lbf and breakaway torque of 300 in.

x lbf.

5. Spring-Return Motors for Dampers Larger Than 25 Sq. Ft.: Size for running and breakaway torque of 150 in. x lbf.

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B. Electronic Damper and Valve Actuators: Direct-coupled type non hydraulic designed for minimum 100,000 full-stroke cycles at rated torque. The actuator shall have rating of not less than twice the thrust needed for actual operation of the damper or valve.

1. Coupling: V-bolt and V-shaped, toothed cradle.

2. Overload Protection: Electronic overload or digital rotation-sensing circuitry.

3. Fail-Safe Operation: Mechanical, spring-return mechanism. Provide external, manual gear release on non-spring-return actuators.

4. Actuators shall have the ability to be tandem mounted.

5. All spring-return actuators shall have a manual override. Complete manual override shall take no more than 10 turns.

6. Power Requirements (Two-Position Spring Return): 24V ac or dc, Maximum 10VA.

7. Power Requirements (Modulating): Maximum 15 VA at 24V ac.

8. Proportional Signal: 2- to 10-V dc or 4 to 20 mA, and 2- to 10-V dc position feedback signal.

9. Temperature Rating: -22°F to 140ºF.

10. Run Time: 200 seconds open, 40 seconds closed.

11. All actuators shall have a 5 year warranty

12. Valves:

a. Size for torque required for valve close-off at maximum pump differential pressure (regardless of water loop system pressures).

b. Valve and Actuators shall come from the factory fully assembled.

c. Spring Return Manual Override shall come with a 10 Degree Valve

Preload to assure tight close off.

13. Dampers:

a. Size for running torque calculated as follows:

i. Parallel-Blade Damper with Edge Seals: 7 inch-pounds/sq. ft.

of damper.

ii. Opposed-Blade Damper with Edge Seals: 5 inch-pounds/sq. ft.

of damper.

iii. Parallel-Blade Damper without Edge Seals: 4 inch-pounds/sq.

ft. damper.

iv. Opposed-Blade Damper without Edge Seals: 3 inch-pounds/sq. ft.

of damper.

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v. Dampers with 2 to 3 Inches wg. of Pressure Drop or Face

Velocities of 1000 to 2500 FPM Multiply the minimum full-stroke cycles above by 1.5.

vi. Dampers with 3 to 4 Inches wg. of Pressure Drop or Face

Velocities of 2500 to 3000 FPM Multiply the minimum full-stroke cycles above by 2.0.

b. Spring Return Manual Override actuators shall a factory set 5

Degree Damper Preload.

2.5 CONTROL VALVES

A. General: Control valves shall be 2-way or 3-way pattern as shown constructed for tight shutoff and shall operate satisfactorily against system pressures and differentials. Two-position valves shall be ‘line’ size. Proportional control valves shall be sized for a maximum pressure drop of 5.0 psi at rated flow (except as may be noted on the drawings). Valves with sizes up to and including 2 inches shall be

“screwed” configuration and 2-1/2 inch and larger valves shall be

“flanged” configuration. Electrically controlled valves shall include spring return type actuators sized for tight shut-off against system pressures and furnished with integral switches for indication of valve position (open-closed). Two/Three-way butterfly valves, when utilized, shall include a separate actuator for each butterfly segment.

Control valves for fan powered boxes and VAV boxes do not need to be of the spring return type.

PART 3 EXECUTION

3.1 GENERAL

A. All work described in this section shall be installed, wired, circuit tested and calibrated by factory certified technicians qualified for this work and in the regular employment of the temperature control system manufacturer or its exclusive factory authorized installing contracting field office (representative). Supervision, calibration and checkout of the system shall be by the employees of the local exclusive factory authorized temperature control contracting field office (branch or representative). Intent is to install & wire (power and

Communications) Owner-Furnished components/systems (coordinated with

Systems Integrator AGM Energy Services) including, but not limited to

(refer to accompanying OPR documents & designated Cut Sheets):

1. Electric Power Monitoring equipment.

2. Distributed OPEN JACE Controllers and auxiliaries.

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3. Digital-Integrated Lighting Control Panels/equipment.

B. Install system and materials in accordance with manufacturer’s instructions, and as detailed in the project drawing set/OPR.

C. Drawings of temperature control systems in the OPR are diagrammatic only and any apparatus not shown, such as relays, accessories, etc., but required to make the system operative to the complete satisfaction of the VAMC/Systems Integrator shall be furnished and installed without additional cost.

D. Install applicable equipment level and plumb.

E. Install software in Unitary control units and assure interface(s) to

VAMC’s operator workstation(s), coordinated with the Systems

Integration Provider. Implement all features of programs to specified requirements and as appropriate to sequences of operation.

F. Connect and configure furnished equipment and software to achieve sequence of operation specified.

G. Verify location of thermostats, humidistats, and other exposed control sensors with plans and room details before installation. Locate all to

ADA standards/level above the floor. Install averaging elements in ducts and plenums in crossing or zigzag pattern.

H. Install guards or tamper proof enclosures on thermostats in the following locations:

1. Entrances.

2. Public areas.

3. Where indicated.

I. Install automatic dampers according to manufacturer’s listed instructions.

J. Install damper actuators on outside of duct in warm areas, not in locations exposed to outdoor temperatures.

K. Install labels and nameplates to identify control components.

L. Install hydronic instrument wells, valves, and other accessories according to manufacturer’s listed instructions"

M. Install refrigerant instrument wells, valves, and other accessories according to manufacturer’s listed instructions.

N. Install duct volume-control dampers according to according to manufacturer’s listed instructions.

O. Install electronic communication and fiber-optic cables according to manufacturer’s listed instructions and NEC requirements.

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3.2 ELECTRICAL WIRING AND CONNECTION INSTALLATION

A. Install raceways, boxes, and cabinets according to manufacturer’s listed instructions and NEC requirements.

B. Install building wire and cable according to manufacturer’s listed instructions and NEC requirements.

C. Install signal and communication cable according to manufacturer’s listed instructions and NEC requirements.

1. Conceal cable, except in mechanical rooms and areas where other conduit and piping are exposed.

2. Install exposed cable in raceway.

3. Install concealed cable in raceway.

4. Bundle and harness multiconductor instrument cable in place of single cables where several cables follow a common path.

5. Fasten flexible conductors, bridging cabinets and doors, along hinge side; protect against abrasion. Tie and support conductors.

6. Number-code or color-code conductors for future identification and service of control system, except local individual room control cables.

D. Connect manual-reset limit controls independent of manual-control switch positions. Automatic duct heater resets may be connected in interlock circuit of power controllers.

E. Connect hand-off-auto selector switches to override automatic interlock controls when switch is in hand position.

3.3 CONNECTIONS

A. Piping installation requirements are specified in other Sections.

Drawings indicate general arrangement of piping, fittings, and specialties. Install piping adjacent to machine to allow service and maintenance.

B. Ground equipment. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A and UL

486B.

3.4 FIELD QUALITY CONTROL

A. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect field-assembled components and equipment installation, including piping and electrical connections. Report results in writing. Calibration and test electric/electronic

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B. Replace damaged or malfunctioning controls and equipment.

1. Start, test, and adjust control systems.

2. Demonstrate compliance with requirements, including calibration and testing, and control sequences.

3. Adjust, calibrate, and fine tune circuits and equipment to achieve sequence of operation specified.

C. Verify Unitary (manufacturer designed & factory-installed) DDC as follows:

1. Verify software including point integrations, alarms, automatic restart, control sequences, scheduling, reset controls, and occupied/unoccupied cycles.

2. Verify local control units including self-diagnostics.

3.5 DEMONSTRATION

A. Engage a factory-authorized service representative to train VAMC's maintenance personnel to adjust, operate, and maintain control systems and components.

1. Train VAMC's maintenance personnel on procedures and schedules for starting and stopping, troubleshooting, servicing, and maintaining equipment and schedules.

2. Provide operator training on data display, alarm and status descriptors, requesting data, executing commands, calibrating and adjusting devices, resetting default values, and requesting logs.

Include a minimum of 40 hours dedicated instructor time on-site.

3. Review data in maintenance manuals.

4. Schedule training with VA COR at least seven days advance notice.

3.6 ON-SITE ASSISTANCE

A. Occupancy Adjustments: Within one year of date of Substantial

Completion, provide up to three Project site visits, when requested by

VAMC, to adjust and calibrate components and to assist VAMC's personnel in making program changes and in adjusting sensors and controls to suit actual conditions.

3.7 WARRANTY ACCESS

A. The VAMC may grant to qualified Mechanical Service contractors, reasonable access to the TCS during the warranty period.

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3.8 ACCEPTANCE TESTING

A. The Division 230923 provider shall perform all necessary calibration, testing and de-bugging and perform all required operational checks to insure that the system is functioning in full accordance with these specifications. The Division 230923 and 250900 contractors are to coordinate the checkout of the system such that each Division has a representative present during system checkout.

B. The Division 230923 provider shall perform tests to verify proper performance of components, routines, and points. Repeat tests until proper performance results. This testing shall include a point-by-point log to validate 100% of the input and output points of the

DDC system operation. The Division 250900 provider shall have a representative present during system checkout by the Division 230923 provider.

C. Upon completion of the performance tests described above, repeat these tests, point by point as described in the validation log above in presence of VAMC's Representative, as required. Properly schedule these tests so testing is complete at a time directed by the VAMC's

Representative. Do not delay tests so as to prevent delay of occupancy permits or building occupancy.

D. System Acceptance:…