Amendment 10 Revised Specs 230900 HVAC Instrumentation and Controls.pdf

24/7 HVAC System Design – GOLD SYSTEM ONLY Federal Building, 11000 Wilshire Blvd.

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SECTION 230900 - HVAC INSTRUMENTATION AND CONTROLS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes control equipment for HVAC systems and components, including control components for terminal heating and cooling units not supplied with factory-wired controls. This section includes:

1. Control equipment. Drawings

2. Software.

3. Sensors.

4. Control Instruments.

5. Controllers.

6. Wiring and conduit in connection with HVAC Instrumentation and Controls in ac-cordance with Division 26.

7. Power supply to HVAC Instrumentation and Controls unless otherwise specified under Division 26.

8. Duct smoke detectors unless otherwise specified under Fire Alarm System.

9. Commissioning of HVAC Instrumentation and Controls.

10. Trending and coordination with other trades for Commissioning of HVAC Sys-tems.

1.2 DEFINITIONS

A. DDC: Direct-digital controls.

B. LAN: Local area network.

C. MS/TP: Master-slave/token-passing.

D. BAS: Building Automation System

E. BACnet: Building Automation and Control Network Protocol by ASHRAE

F. BTL: BACnet Test Laboratory

G. PIO: Proportional Plus Integral Plus Derivative

H. PICS: Protocol Implementation Conformance Statement

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I. RTD: Resistance Temperature Detection

J. BIBBS: BACnet Interoperability Building Blocks

K. XML: Extensible Mark-up Language

L. OBIX: Open Building Information Exchange

M. SOAP: Simple Object Access Protocol

1.3 REFERENCES

A. NFPA 90 – Installation of Air Conditioning and Ventilating Systems.

B. UL 864 – Control Units for Fire Protective Signaling Systems.

C. UL 916 – Energy Management.

D. NFPA 91A – Recommended practice for smoke control systems.

E. ADA – Americans with Disabilities Act.

F. UL 508A – Manufacturer listed control panel.

G. EIA/TIA-568 – Commercial Building Wiring Standard.

H. ASHRAE – American Society of Heating Refrigerating and Air Conditioning Engineers

I. ANSI/ASHRAE Standard 135-2012 BACnet

J. EMC Directive 89/336/EEC (European CE Mark)

1.4 SYSTEM DESCRIPTION

A. Control system consists of sensors, indicators, actuators, final control elements, inter-face equipment, other apparatus, and accessories to control mechanical systems.

B. A distributed control system, complete with all software and hardware functions, shall be provided and installed. System shall be completely based on ANSI/ASHRAE Stand-ard 135-2012, BACnet. This system is to control mechanical equipment specified using native BACnet-compliant components. Non-BACnet-compliant or proprietary equip-ment or systems shall not be acceptable and are specifically prohibited.

C. The system shall provide capability through web services. The web services shall per-form through the Niagara 4 Platform. Refer to Division 25.

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D. Control system includes coordination with other trades from conception to completion of project to allow for a Commissioning and Operating HVAC Control System.

E. Control System includes wiring and conduit in connection with HVAC Instrumentation and Controls.

F. Control System includes the electrical power supply to HVAC Instrumentation and Con-trols, unless otherwise specified under Division 26. Coordinate with Electrical Contrac-tor and other trades. Provide a complete and operational control system.

1.5 SYSTEM PERFORMANCE

A. All IP enabled control devices must comply with the GSA Building Technologies Tech-nical Reference Guide version 1.1 and be approved for use prior to installation.

B. Comply with the following performance requirements:

1. Graphic Display Time: Display graphic with minimum 60 dynamic points with cur-rent data within 10 seconds.

2. Graphic Refresh Time: Update graphic with minimum 60 dynamic points with current data within 8 seconds.

3. Object Command: Reaction time of less than two seconds between operator command of a binary object and device reaction.

4. Object Scan: Transmit change of state and change of analog values to control units or workstation within six seconds.

5. Alarm Response Time: Annunciate alarm at workstation within 45 seconds. Mul-tiple workstations must receive alarms within five seconds of each other.

6. Program Execution Frequency: Run capability of applications as often as five sec-onds but selected consistent with mechanical process under control.

7. Performance: Programmable controllers shall execute DDC PID control loops, and scan and update process values and outputs at least once per second.

8. Reporting Accuracy and Stability of Control: Report values and maintain meas-ured variables within tolerances as follows:

9. The requirements here are state for verification and measurement purposed and do not reduce the accuracy requirements of sensors and other components spec-ified.

a. Water Temperature: Plus or minus 1 deg F.

b. Water Flow: Plus or minus 5 percent of full scale.

c. Water Pressure: Plus or minus 2 percent of full scale.

d. Dew Point Temperature: Plus or minus 3 deg F.

e. Relative Humidity: Plus or minus 5 percent.

f. Airflow (Measuring Stations): Plus or minus 5 percent of full scale.

g. Airflow (Terminal): Plus or minus 10 percent of full scale.

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h. Air Pressure (Space): Plus or minus 0.01-inch wg.

i. Air Pressure (Ducts): Plus or minus 0.1-inch wg.

j. Carbon Monoxide: Plus or minus 5 percent of reading.

k. Carbon Dioxide: Plus or minus 50 ppm.

1.6 SUBMITTALS

A. At the time of the bid, provide a separate proposal for a five year service maintenance program for DDC and FMCS systems.

B. Provide a complete and comprehensive submittal package. Partial submittals shall not be accepted. Upon completion, submit all compliance data and project record docu-ments.

C. Product Data: Include manufacturer's technical literature for each control device. Indi-cate dimensions, capacities, performance characteristics, electrical characteristics, fin-ishes for materials, and installation and startup instructions for each type of product in-dicated.

1. Each control device labeled with setting or adjustable range of control.

D. Control Valve and Actuator Test: Initial performance test on all control valves and actu-ators for full range of motion to be performed within 90 days of contract award. Writ-ten report of testing along with recommendation for repairs and replacement to be submitted for review.

E. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

1. Schematic flow diagrams showing the systems for fans, pumps, coils, dampers, valves, and control devices.

2. Wiring diagrams: Power, signal, and control wiring. Differentiate between manu-facturer-installed and field-installed wiring. Indicate LAN/ BACnet and or Gate-way connections.

3. Color scheme for control wiring.

4. Details of control panel faces, including controls, instruments, and labeling.

5. Written description of sequence of operation.

6. Schedule of dampers including leakage and flow characteristics.

7. Schedule of valves including leakage and flow characteristics.

8. DDC System Architecture: Provide a schematic showing the architecture of the

DDC system's entire Building-Level Network that identifies all Building Network Controllers, Tridium JACE panel, Digital Controllers, Equipment Control Devices (such as VFDs, factory chiller control panels, etc.), repeaters, Operator

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Workstations (if required by contract documents), and LAN device including fiber optic media, converters, DSL modems, routers, hubs, bridges, and switches. Each Digital Controller, Equipment Controller, and Building Network Controller shall be identified on the schematic using the object name associated with the controller as it appears in the database. Indicate the communication protocol and physical media to be used at each level.

9. System configuration showing peripheral devices, batteries, power supplies, dia-grams, modems, and interconnections.

10. Detailed point list. Use the following ASHRAE Guideline 13 recommended format:

POINT NAME

HARDWARE POINTS SOFTWARE POINTS TREND

FREQUENCY

(MIN)

SHOW ON

GRAPHIC

(Y/N)

COMMENTS

AI AO DI DO AV DV SCHED

11. BACnet PICS statements for each submitted controller type.

12. A floor plan indicating the actual location of room temperature sensor, communi-cation cable routing, and the location of concealed duct static pressure sensors used for controlling air moving equipment.

13. Written description of sequence of operation. Provide all applicable data related to optimization of energy efficiency. The Engineer of Record’s sequence of oper-ations shall be incorporated into the Shop Drawing sequences. At a minimum, include all software objects, setpoint limits, alarm conditions, and time delays.

F. Installing company qualifications.

G. Manufacturer qualifications.

H. A letter of approval signed by the project commissioning authority indicating ac-ceptance of sequence of operation.

I. Software and Firmware Operational Documentation: Include the following:

1. Software operating and upgrade manuals.

2. Program Software Backup: On a magnetic media or compact disc, complete with data files.

3. Device address list.

4. Printout of software application and graphic screens.

5. Software license required by and installed for DDC workstations and control sys-tems.

6. Domain, Subnet, & Channel ID’s.

J. Software Upgrade Kit: For Owner to use in modifying software to suit future system re-visions or monitoring and control revisions.

K. Test Plan for Contractor Field Tests

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1. For every Network Building Controller and Digital Controller provide a Field Test Checkout Sheet. All data that can be filled out on each checkout sheet prior to conducting the test, shall be provided on each sheet.

2. Include the intended test procedure, the expected response, and the pass/fail cri-teria for every component tested.

L. Functional Performance Testing Plan

1. Provide a written description of a set of step-by-step test procedures that shall be performed by the DDC contractor to demonstrate the functionality of every aspect of the sequences of operation. The production validation test (PVT) plan shall be a clear list of test items arranged in a logical sequence.

2. The plan shall clearly describe how each item is tested, indicating where assisting personnel are required (like the mechanical contractor), and include what proce-dures are used to simulate conditions.

M. Maintenance Data: For systems to include in maintenance manuals specified in Divi-sion 1. Include the following:

1. Maintenance instructions and lists of spare parts for each type of control device.

2. Interconnection wiring diagrams with identified and numbered system compo-nents and devices.

3. Keyboard illustrations and step-by-step procedures indexed for each operator function.

4. Inspection period, cleaning methods, cleaning materials recommended, and cali-bration tolerances.

5. Calibration records and list of set points.

N. Project Record Documents: Record actual locations of control components, including control units, thermostats, and sensors. Revise Shop Drawings to reflect actual installa-tion and operating sequences. Provide an updated floor plan indication the actual in-stalled location of room temperature sensors and duct static pressure sensors.

O. Seventy-two (72) hour trend data.

P. HVAC Instrumentation and Controls training program.

1.7 QUALITY ASSURANCE

A. Installing Company Qualifications:

B. Five years of experience in installation of similar systems for similar projects.

C. Experience in completing a minimum of three local projects of similar size with the type of DDC system specified for this project within the last five years.

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D. A Building Automation Service Department within the project site with a 2-hour mini-mum response time for emergency service.

E. Authorized Factory Representative for submitted BACnet controls product.

F. Manufacturer Qualifications: A firm experienced in manufacturing automatic tempera-ture-control systems and with a record of successful in-service performance. The man-ufacturer’s DDC control hardware and software shall have BACnet conformance ap-proval from the BACnet Test Laboratory. The control system architecture shall consist of the components of one manufacturer regularly engaged in the production of open control systems and shall be the manufacturer’s latest standard of design at the time of the bid.

G. Control Engineer Qualifications: A control Engineer shall oversee the design and instal-lation of the DDC system. The Control Engineer shall have a minimum of five (5) years experience with the installing company at an equal level of responsibility. The Control Engineer shall have completed factory training for certification for the design, installa-tion, start-up, and commissioning of the DDC components to be installed. The Control Engineer shall have experience in completing a minimum of two projects of similar size with the type of DDC system specified for this project. Removal or replacement of Con-trol Engineer shall be subject to the owner’s approval.

H. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use. All DDC controllers for this project shall be manufac-tured by single manufacturer. A mixture of DDC controllers by various manufacturers shall not be allowed. All DDC controllers, building controllers and application control-lers shall communicate via BACnet LAN.

I. Comply with NFPA 90A, "Installation of Air Conditioning and Ventilation Systems."

J. Comply with ASHRAE 135 for DDC system control components.

K. Control panels and cabinets installed in this project shall be UL 508A listed as a com-plete assembly. All electronic components and devices shall be enclosed in NEMA rated enclosures.

L. All system levels shall be compliant with the BACnet Standard 135-2012. Upon comple-tion of commissioning process and prior to acceptance, contractor shall provide a pro-tocol analyzer and demonstrate that all system components that communicate within the system utilize the BACnet protocol. Contractor may at their expense hire a qualified, independently registered engineer to perform test. Any components that do not fully comply with the BACnet standard shall be replaced until entire system architecture is re-tested and compliant. Conflict resolution shall be submitted to BTL

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(www.BACnetassociation.org) at contractor’s expense and BTL determination shall be final.

1.8 DELIVERY, STORAGE, AND HANDLING

A. Factory-Mounted Components: Where control devices specified in this Section are in-dicated to be factory mounted on equipment, arrange for shipping of control devices to unit manufacturer.

1.9 COORDINATION

A. Coordinate location of room temperature sensors, and other exposed control sensors with plans and room details before installation.

B. Coordinate supply of conditioned electrical circuits for control units and operator work-station.

C. Coordinate chiller control network requirements with chiller control requirements and control system components provided with the chiller equipment.

D. Coordinate equipment to achieve compatibility with motor starters and annunciation devices.

E. Coordinate with Division 26 for Electrical Power Supply to Control Equipment and De-vice. Unless otherwise specified under Division 26, provide and install all the electrical wiring/conduit and components for a complete and operational control system.

1.10 EXTRA MATERIALS

A. Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

1. Room Temperature Sensor: Provide five for each unique type.

2. Zone Controllers: Provide five for each unique type.

B. Replacement Materials: One replacement relay mechanism for each unique damper motor, valve motor, controller, and sensor.

1.11 WARRANTY

A. The system shall include all hardware and software components warranty for a period

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of three years following the substantial completion date. Provide a five-year warranty for all actuators.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturer: Subject to compliance with requirements, installing company qualifica-tions, and manufacturer’s qualifications, provide products by the following. The manu-facturer shall provide DDC control hardware and software with BACnet conformance approvals from the BACnet Test Laboratory.

1. Electric, Electronic, and DDC Systems:

a. Automated Logic Controls, BACnet Systems

b. DisTech EC-Net, BACnet Systems

c. Schneider Electric BACnet Systems

2.2 DDC EQUIPMENT AND SOFTWARE

A. Operator Workstation

B. Network management tools shall be based upon Tridium Niagara 4 Framework tech-nology as developed by the Tridium Corporation. All tools and hardware provided shall comply with the current release version of the Niagara 4 Framework platform. The sup-plied computer software shall employ object-oriented technology for representation of all data and control devices within the system. The intent of this specification is to pro-vide a peer-to-peer networked, stand-alone, distributed control system with the capa-bility to integrate ANSI/ASHRAE Standard 135 BACnet technology, and other open communication protocols in one open, interoperable system. Provide open Niagara 4 Java application control engines (JACE’s). Proprietary JACE’s shall not be accepted.

C. Graphics software: The graphics shall reside on the Niagara 4 platform. Refer to Divi-sion 25 Integrated Automation, section 250000 Facility Management and Control Sys-tem.

A. DDC Controllers

1. Communication from JACE’s to DDC Controllers shall be via BACnet.

Building controller shall incorporate as a minimum, the functions of a 3-way BACnet router. Controller shall route BACnet messages between the high-speed LAN (Ethernet 10/100MHz), master slave token passing (MS/TP) LANs, a point-to-point (PTP – RS-232) connection and modem.

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a. Each MS/TP LAN shall be software configurable from 9.6 to 76.8Kbps.

2. Building controller shall be capable of providing global control strategies for the system based on information from any objects in the system regardless if the object is directly monitored by the controller or by another controller. The program that implements these strategies shall be completely flexible and user definable.

3. Programming shall be object-oriented using control function blocks, supporting DDC functions, 1000 Analog Values and 1000 Binary Values. All flowcharts shall be generated and automatically downloaded to controller.

Programming tool shall be resident on workstation and the same tool used for all controllers.

4. Provide means to graphically view inputs and outputs to each program block in real-time as program is executing. This function may be performed via the operator’s workstation or field computer.

5. Building controller shall provide battery-backed real-time (hardware) clock functions.

6. Controller shall have a memory needed to ensure high performance and data reliability. Battery shall retain static RAM memory and real-time clock functions for a minimum of 2 years (cumulative).

7. Building Controllers and Custom Application Controllers shall be selected to provide a minimum of 15% spare I/O point capacity for each point type found at each location. If input points are not universal, 15% of each type is required. If outputs are not universal, 15% of each type is required. A minimum of one spare is required for each type of point used.

a. Future use of spare capacity shall require providing the field device, field wiring, point database definition, and custom software. No additional controller boards or point modules shall be required to implement use of these spare points.

8. Provide sufficient internal memory for the specified sequences of operation and trend logging. There shall be a minimum of 25% of available memory free for future use.

9. Building controller shall provide battery-backed real-time (hardware) clock functions.

10. Controller shall have the memory needed to ensure high performance and data reliability. Battery shall retain static RAM memory and real-time clock

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functions for a minimum of 2 years (cumulative). The controller shall maintain all BIOS and programming information in the event of a power loss for at least 72 hours. Protect programs residing in memory with EEPROM or flash memory. Building Network Controllers shall store all trends and alarms in flash memory and automatically perform a safe system shutdown preserving all data upon a line power outage. Building Network Controllers shall have a rechargeable battery with sufficient capacity to perform the safe system shutdown.

11. Rechargeable power sources shall be constantly charged while the controller is operating under normal line power. Batteries shall be replaceable without soldering.

D. Application-Specific controllers:

1. Provide one native BACnet application specific controller for each piece of unitary mechanical equipment that adequately covers all objects listed. All controllers shall interface to building controller via MS/TP LAN using BACnet protocol. Con-trollers shall include input, output and self-contained logic program as needed for complete control of unit.

2. Zone damper: Actuators shall be electronic with a means for lockable manual override.

3. Provide a metal NEMA 2 enclosure for actuator assembly of the zone controllers.

4. Provide a metal NEMA 2 enclosure for all electronic components of zone control-ler.

E. Software Capabilities: Update to latest version of software at Project completion. In-clude and implement the following capabilities from the control units:

1. Units of Measure: Inch-pound and SI (metric).

2. Load Control Programs: Demand limiting, duty cycling, automatic time schedul-ing, start/stop time optimization, night setback/setup, DDC with fine tuning, and trend logging.

3. HVAC Control Programs: Optimal run time, supply-air reset, and enthalpy switch-over.

4. Programming Application Features: Include trend point, alarm messages, weekly scheduling, and interlocking.

5. Paging: Provide the means of automatic alpha numeric paging of personnel for user defined control system requirements.

2.3 CONTROL PANELS

A. Control Panels: Unitized cabinet with suitable brackets for wall or floor mounting, lo-cated adjacent to each system under automatic control. Provide common keying for all

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panels. Provide UL 508A listed panels as a complete assembly.

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. Panel-Mounted Equipment: Temperature and humidity controllers, relays, and automatic switches; except safety devices. Mount devices with adjustments ac-cessible through front of panel.

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

4. Graphics: Color-coded graphic, laminated-plastic displays on doors, schemati-cally showing system being controlled, with protective, clear plastic sheet bonded to entire door.

5. Provide one uninterruptable power supply for each supervisory control panel.

B. Alarm Panels: Indicating light for each alarm point, single horn, acknowledge switch, and test switch, mounted in hinged-cover enclosure.

1. Alarm Condition: Indicating light flashes and horn sounds.

2. Acknowledge Switch: Horn is silent and indicating light is steady.

3. Second Alarm: Horn sounds and indicating light is steady.

4. Alarm Condition Cleared: System is reset and indicating light is extinguished.

5. Contacts in alarm panel allow remote monitoring by independent alarm com-pany.

C. Provide one external Uninterrupted Power Supply (UPS) in NEMA 1 enclosure for every DDC Control Panel. Enclosures on the roof shall be NEMA 12R.

2.4 SENSORS AND COMMUNICATION DEVICES

A. Electronic Sensors: Vibration and corrosion resistant; for wall, immersion, or duct mounting as required.

1. Thermistor Temperature Sensors (Thermistor):

a. Accuracy: Plus or minus 0.5 deg F at calibration point.

b. Wire: Twisted, shielded-pair cable.

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

2. Resistance Temperature Detectors (RTD): Platinum.

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

b. Wire: Twisted, shielded-pair cable.

c. Insertion Elements in Ducts: Single point, 8 inches long; use where not af-fected by temperature stratification or where ducts are smaller than 9 sq. ft.

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d. Averaging Elements in Ducts: 36 inches long, flexible; use where prone to temperature stratification or where ducts are larger than 9 sq. ft.; length as required.

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

3. Static-Pressure Transmitter: Nondirectional sensor with suitable range for ex-pected input, and temperature compensated.

a. Accuracy: 2 percent of full scale with repeatability of 0.5 percent.

b. Output: 4 to 20 mA.

c. Duct Static-Pressure Range: 0 to 5 inches wg.

4. Liquid Pressure Transmitters: Provide Liquid Pressure Sensors with accuracy of + 1% operating environment or -40 degrees F to 260 degrees F with output signal of 4-20 mA.

5. Current Sensing Relays: Solid State AC switch with internal current transformer.

The switch shall operate when the current level sensed by the internal current transformer exceeds the threshold value set by the adjustment knob. Provide re-lays with split core design for the range suitable for application. Coordinate with electrical contractor.

6. Current Transformer: Provide current transformers rated for the specified amper-age. The transformer shall provide 0 to 5 VDC output signal.

7. Differential Pressure Switches: A diaphragm operated snap switch shall actuate the electrical circuit upon sensing of Differential Pressure. The setpoint range shall be 1 inch WC to 12-inch WC.

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

9. Air Flow Measuring Station:

10. Fan Airflow Measuring Station with Transducer- The stations shall continuously measure the airflow through the inlet of the fan and transmit that information to the building automation system via 4-20 mA or 0-10 VDC signals. Overall accu-racy of the flow measuring station shall be within 5% of actual air flow. Pressure drop shall not exceed .1” water gage.

11. Outside Air and Ductwork Flow: Duct and Plenum Probes with Transducer- The stations shall continuously measure the airflow through the duct or louver and transmit that information to the building automation system via 4-20 mA or 0-10 VDC signals. Overall accuracy of the flow measuring station shall be within 5% of actual air flow. Pressure drop shall not exceed .1” water gage.

12. Humidity Sensors: Bulk polymer sensor element.

a. Accuracy: 1 percent full range.

b. Room Sensors: With locking cover matching room thermostats, span of 25 to 90 percent relative humidity.

c. Duct and Outside-Air Sensors: With element guard and mounting plate, Los Angeles, CA

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range of 0 to 100 percent relative humidity.

13. Pressure Transmitters: Direct acting for gas or liquid; range suitable for system;

proportional output 4 to 20 mA.

14. Duct Smoke Detectors: Comply with NFPA requirements. Coordinate with Divi-sion 26 and Fire Alarm Systems.

15. 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. Coordinate with chiller and boiler manufacturers. Flow switches shall be approved and or provided by these manufacturers.

16. Gateways and Direct LAN Connections: Coordinate with HVAC equipment manu-facturers, provide and install a complete and operational control Gateway and or Direct LAN connection to the HVAC equipment. Coordinate with equipment manufacturers and other trades to avoid omission or duplication and assure a complete and operating system.

17. Room Temperature Sensor: White, with concealed thermometer and override switch. Install on a sealed airtight insulated backing base.

18. kW Meter: Microprocessor based power transducer with high accuracy split-core current transformers for 3-phase, 208-480 Vac, 60 Hz power measurement. Pro-vide 4 to 20 mA, 0-10 VDC, or pulsed digital output signal. Coordinate with elec-trical contractor and the manufacturers of HVAC equipment.

B. Switches and sensors applications:

1. Status Inputs for Fans: Current sensing relay.

2. Status Inputs for Pumps: Current sensing relay.

3. Status Inputs for other Electric Motors: Current-sensing relay.

4. Duct Temperature Sensors: 1000 Ohm RTD Duct Sensors with operating range of

20 degrees F to 120 degrees F.

5. Room Temperature Sensors: Thermistor to 55-95 degrees F with 0.5 degrees F accuracy.

6. Chilled Water Pipe Temperature Sensors: 1000 Ohm RTD Liquid Immersion Sen-sors with operating range 20 degrees F to 70 degrees F.

7. Provide and install all other components indicated for complete and operational system.

2.5 ACTUATORS

A. Electronic Damper, Large-Valve Actuators: Direct-coupled type designed for minimum 60,000 full-stroke cycles at rated torque.

1. Valves: Size for torque required for valve close-off at maximum pump differential pressure.

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2. Dampers: Size for running torque calculated as follows:

a. Opposed-Blade Damper with Edge Seals: 5 inch-pounds/sq. ft. of damper.

b. Pressure Drop: Dampers with 2 to 3 Inches wg of Pressure Drop.

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

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

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

6. Power Requirements (Modulating): Maximum 10 VA at 24-V ac or 8 W at 24-V dc.

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

8. Temperature Rating: 40 to 104 deg F.

9. Temperature Rating (Smoke Dampers): Minus 22 to plus 250 deg F.

10. Run Time: 12 seconds open, 5 seconds closed.

2.6 DAMPERS

A. Dampers: AMCA-rated, opposed-blade design; 0.1084-inch minimum, galvanized-steel frames with holes for duct mounting; damper blades shall not be less than 0.0635-inch galvanized steel with maximum blade width of 8 inches. Coordinate with mechanical contractor and HVAC equipment manufacturers.

B. Blades shall be secured to ½-inch- diameter, zinc-plated axles using zinc-plated hard-ware, with nylon blade bearings, blade-linkage hardware of zinc-plated steel and brass, ends sealed against spring-stainless-steel blade bearings, and thrust bearings at each end of every blade.

C. Operating Temperature Range: From minus 40 to plus 200 degree F.

D. For standard applications, include optional closed-cell neoprene edging.

E. For low-leakage applications, use parallel- or opposed-blade design with inflatable seal blade edging, or replaceable rubber seals, rated for leakage at less than 10 cfm per sq.

ft. of damper area, at differential pressure of 4 inches wg when damper is being held by torque of 50 in. x lbf; when tested according to AMCA 500D.

F. Coordinate with other Division 23 Sections.

2.7 CONTROL CABLE

A. Fiber Cable and Termination Hardware

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12. Cables: Comply with UL and CEC requirements.

13. Dual-Window Fiber Optic Cables:

a. Multimode Fiber:

1) All-glass, graded index fiber.

2) Core/cladding: 62.5/125 m.

3) Numerical aperture: 0.275.

4) Modal bandwidth:

a) 200 MHz•km at 850 nm.

b) 500 MHz•km at 1300 nm.

5) Maximum Attenuation:

a) 3.5 dB/km at 850 nm.

b) 1.5 dB/km at 1300 nm.

6) Single Mode Fiber:

a) All-glass, graded index fiber.

b) Core/cladding: 8.3/125 m

7) Maximum Attenuation:

a. Outside Cable:

01) 0.5 dB/km at 1310 nm.

02) 0.3 dB/km and 1550 nm.

b. Inside Cable: 1.0 dB/km at 1310nm and 1550 nm.

B. Twisted Pair Cabling

14. Cables: Comply with ANSI EIA/TIA-568-B standard, ICEA specifications, UL and CEC requirements.

15. Install control wiring in conduit except as specified under Part 3 of this section.

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PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that conditioned power supply is available to control units and operator work-station.

B. Verify that duct, pipe, and equipment-mounted devices and wiring and piping are in-stalled before proceeding with installation.

C. Obtain the manufacturer data for the proposed HVAC equipment. Verify the electric power supply requirements of control interfaces and connections. Coordinate with electrical and mechanical contractors and other trades.

3.2 INSTALLATION

A. Install DDC Controllers for a complete and operational system. Install all DDC control-lers inside NEMA rated control panels.

B. Install in accordance with manufacturer's instructions.

C. Install control wiring and electrical work in accordance with National Electrical codes.

In addition to the requirements specified herein, the wiring installation shall meet the requirements of EIA/TIA Standard 568, Commercial Building Standard for telecommuni-cation pathways and spaces.

D. Wiring Inside Rigid Conduit: Outdoor exposed areas and areas exposed to weather.

Minimum conduit size 3/4".

E. Plenum Rated Wiring: Concealed areas above ceilings. Coordinate with electrical con-tractor. Support final connection wiring in accordance to National Electric Code and at every four feet. Diagonal installation shall not be accepted. Provide sleeves for wall penetrations.

F. Identification Standards:

1. Node Identification: All nodes shall be identified by a permanent label fastened to the outside of the enclosure.

2. Cable shall be labeled at a minimum of every 18” with the type of signal carried within the cable.

3. Raceway Identification: All the covers to junction and pull boxes of the control raceways shall be painted with the appropriate color.

4. Wire Identification: All low and line voltage control wiring shall be identified by a number, as referenced to the associated shop drawing and as-built drawing.

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5. Control wiring color coding shall be consistent throughout this project. Coordi-nate with the owner and other trades. Provide communication and control wiring with proper identification and labeling. Clearly label and color code control wir-ing as follows:

a. Orange: Local area network wiring.

b. Blue: Analog and digital, input or output points.

c. Green: Low voltage power wiring.

d. White: Line voltage wiring, or per National Electric Codes.

G. Do not install low and line voltage wiring in the same conduit.

H. Provide and install wiring and conduit in connection with HVAC instrumentation and controls for complete operational system.

I. Provide and install electrical power supply to HVAC instrumentation and controls unless otherwise specified under Division 26. Coordinate with Division 26.

J. Install transformers inside NEMA rated control enclosures.

K. Label all control components and instruments.

L. Verify the actual location of room temperature sensors prior to installation. Coordinate with furniture layout. Assure the location of each room temperature sensor is within the zone of the corresponding HVAC equipment. Verify that the room sensor locations provide an acceptable measurement of the controlled environment. Comply with ADA requirements.

M. Perform and document comprehensive testing for all control installation. Provide nec-essary instruments and equipment to document the results.

1. Verify that circuits are continuous and free from short circuits and grounds.

2. Verify that circuits are free from unspecified ground. The resistance to ground of all circuits shall be over 50 megaOhms.

3. Verify that circuits are free from induced voltage.

4. Provide complete testing for all cables used under this contract. Provide all equipment, tools, and personnel as necessary to conduct these tests.

5. Provide for complete grounding of all signal and communication cables, panels, and equipment so as to ensure system integrity of operation. Ground cabling and conduit at the panel terminations. Avoid grounding loops.

N. Installation Quality Requirements: In addition to the requirements of Division 26, man-ufacturer’s recommendation and National Electric Codes, provide installation quality requirements specified here for a complete and operational control system.

1. All conduits and raceways shall be installed level, plumb, at right angles to the

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building lines and shall follow the contours of the surface to which they are at-tached.

2. Flexible Metal Conduit shall be used for vibration isolation and shall be limited to 3 feet in length when terminating to vibrating equipment. Flexible Metal Conduit may be used within partition walls. Flexible Metal Conduit shall be UL listed.

3. Provide firestopping for all penetrations.

4. All openings in fireproofed or fire stopped components shall be closed by using approved fire resistive sealant.

5. All wiring passing through penetrations, including walls, shall be in conduit or en-closed raceway.

6. Penetrations of floor slabs shall be by core drilling. All penetrations shall be plumb, true, and square.

7. No penetrations in structural elements shall be made before receipt of written approval from the architect.

3.3 HVAC INSTRUMENTATION AND CONTROLS TRAINING PROGRAM

A. Develop a comprehensive effective training program. Submit for approval.

B. Field Training of Operators: In addition to other training requirements specified else-where, upon completion of work under this section and upon owner’s acceptance pro-vide 80 hours of formal classroom training for owner’s operators. The training shall be conducted by factory trained control engineers and technicians. This training shall be provided in 8-hour sessions at a time. A factory certified trainer shall be present during the training. Provide handouts and audio-visual programs as required.

C. Provide a professionally prepared 2-hour custom digital videotape summarizing the en-tire training program required for this section of this project. Production and prepara-tion of the video tape shall be by a third-party company specializing in commercial training programs. Provide electronic segmentation of the videotape with index for ease of use by the Operators. As a minimum, provide one section for each type of sys-tem and each graphic screen of the Operator’s Workstation. Each segment shall be three to five minutes.

3.4 COMMISSIONING OF BUILDING AUTOMATION SYSTEM

A. Commissioning per ASHRAE Standards. Commissioning Report shall include the fol-lowing:

1. Seventy-two (72) hour Trend Data.

2. Installation Verification of Building Automation System.

B. Refer to Mechanical Commissioning Section. Coordinate and provide the required

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expertise and services for a complete commissioning process. Coordinate with all other trades for a complete commissioned system. Coordinate with the commissioning au-thority.

C. Documents results in Standard Forms recommended by DDC manufacturer or other es-tablished organizations. Comply with the similar standards established by AABC, NEBB or ASHRAE. Obtain approval prior to commencement of the work.

D. Attend the monthly commissioning meeting. Coordinate with the commissioning au-thority of the project.

E. Provide seasonal simulation to allow for a complete and operating system throughout the year. Provide a comprehensive building automation re-commissioning within 6 months of installation for seasonal adjustment.

F. The Control Contractor’s Engineer shall be present on-site for all commissioning activi-ties involving equipment and systems controlled and monitored by the DDC system. In addition, provide no less than 45 working days for on-site support during the func-tional performance test.

3.5 SEVENTY-TWO (72) HOUR TREND DATA

A. Upon completion after project provide a seventy-two (72) hour data indicating com-plete operation of DDC System. Final acceptance of the completion of the DDC shall be based upon the seventy-two (72) hour Trend Data. The Trend Data shall be in form of color Trend Graph. Provide Trend Data of all temperatures, air- and water- flow quantities, and equipment status points. This shall include room, outside air, chilled water, heating hot water, condensing water temperatures and set points. Trend data shall also include duct and pipe pressures and set points. The trend data shall also in-clude variable frequency drive speed and frequency. It shall also include outside, return and supply air quantities and position of dampers. Provide trend data for kW meter and chiller operation. Submit specified list of points and graphic format of trending for approval prior to commencement of 72-hour trending. Coordinate with commissioning agent.

B. Provide additional (72) hour trend data as required until full compliance.

C. A factory-trained control technician with minimum of 3 years experience shall be physi-cally present at the jobsite from 8:00 am to 5:00 pm during every 72-hour trending pro-cess until final acceptance.

D. Upon completion submit the results indicating compliance in one complete package.

Submit 6 sets.

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3.6 INSTALLATION VERIFICATION OF BUILDING AUTOMATION SYSTEM

A. Controller Verification: Perform verification procedure on each DDC controller prior to software installation and prior to commencement of point-to-point check-out.

B. Verify installation of labels and nameplates to identify control components according to Division 23.

C. Verify installation of hydronic instrument wells, valves, and other accessories according to Division 23.

D. Document results in Standard Forms recommended by DDC manufacturer or other es-tablished organizations. Comply with similar standards established by NEBB or ASHRAE. Obtain approval prior to commencement of the work.

E. Upon completion submit the results indicating compliance.

3.7 FIELD QUALITY CONTROL

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

1. Operational Test: After electrical circuitry has been energized, start units to con-firm proper unit operation. Remove malfunctioning units, replace with new units, and retest.

2. Test and adjust controls and safeties. Replace damaged and malfunctioning con-trols and equipment, and retest.

3. Calibration test electronic controllers by disconnecting input sensors and stimu-lating operation with compatible signal generator.

B. Engage a factory-authorized service representative to perform startup service.

C. 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.

D. Verify DDC as follows:

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

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2. Verify operation of operator workstation.

3. Verify local control units including self-diagnostics.

3.8 DEMONSTRATION

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

1. Train Owner's maintenance personnel on procedures and schedules for starting and stopping, troubleshooting, servicing, and maintaining equipment and sched-ules.

2. Provide operator training on data display, alarm and status descriptors, request-ing data, executing commands, calibrating and adjusting devices, resetting de-fault values, and requesting logs. In addition to training requirements specified elsewhere, include a minimum of 32 hours' dedicated factory instructor time on-site.

3. Review data in maintenance manuals.