230327_240126_ProjectManual Part 2 of 2.pdf

Boiler Replacement for Fair Plain East Elementary and Benton Harbor High School

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6. Acceptance Criteria: Structure-borne vibration not to exceed specified performance.

3.7 TAB VERIFICATION

A. Prerequisites: Completion of "Examination" Article requirements and correction of deficiencies, as specified in Section 230593 "Testing, Adjusting, and Balancing for

HVAC."

B. Completion of "Preparation" Article requirements for preparation of a TAB plan that includes strategies and step-by-step procedures, and system-readiness checks and reports, as specified in Section 230593 "Testing, Adjusting, and Balancing for HVAC."

C. Scope: HVAC air systems and hydronic piping systems.

D. Purpose: Differential flow relationships intended to maintain air and water pressurization differentials between the various areas of Project.

E. Conditions of the Test:

1. Cx Test Demonstration Sampling Rate: As specified in "Inspections" Article in

Section 230593 "Testing, Adjusting, and Balancing for HVAC."

2. Systems operating in full heating mode with minimum outside-air volume.

3. Systems operating in full cooling mode with minimum outside-air volume.

4. For measurements at air-handling units with economizer controls; systems operating in economizer mode with 100 percent outside air.

F. Acceptance Criteria:

1. Under all conditions, rechecked measurements comply with "Inspections" Article in Section 230593 "Testing, Adjusting, and Balancing for HVAC."

2. Additionally, no rechecked measurement shall differ from measurements documented in the final report by more than the tolerances allowed.

3. Under all conditions, where the Contract Documents indicate a differential in airflow between supply and exhaust and/or return in a space, the differential relationship shall be maintained.

3.8 HEATING CONTROL SYSTEM Cx TESTS

A. Steam Heating System:

1. Prerequisites: Installation verification of the following:

a. Startup of boiler.

b. Startup of feed-water pump(s).

c. TAB of steam flow and pressure.

d. Input Device: Steam supply pressure sensor.

e. Output Device: Control valve.

f. Display the following at the operator's workstation:

1) Steam supply pressure.

2) Steam system pressure set point.

3) Control-valve position.

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2. Scope: Steam generation system for heating.

3. Purpose: Control of steam supply pressure at input device.

4. Conditions of the Test:

a. Minimum steam pressure/flow.

b. Maximum steam pressure/flow.

5. Acceptance Criteria: Under all conditions, steam system pressure if within 1.5 Psig of set point.

B. Heating-Water Supply Temperature Control:

1. Prerequisites: Installation verification of the following:

a. Startup of boiler.

b. Startup of heating-water pump(s).

c. TAB of heating-water flow and pressure.

d. Input Device: Heating-water supply temperature; thermostat thermistor temperature sensor.

e. Output Device: Control valve.

f. Display the following at the operator's workstation:

1) Heating-water supply temperature.

2) Heating-water supply temperature set point.

3) Control-valve position.

2. Scope: Heating-water system.

3. Purpose: Control of heating-water supply temperature at input device.

4. Conditions of the Test:

a. Minimum heating-water flow.

b. Midrange Heating-Water Flow: 50 to 60 percent of maximum.

c. Maximum heating-water flow.

5. Acceptance Criteria: Under all conditions, heating-water supply temperature is within plus or minus 2.0 deg F of set point.

C. Heating-Water Supply Temperature Reset:

1. Prerequisites: Installation verification of the following:

a. Startup of boiler.

b. Startup of heating-water pump(s)

c. TAB of heating-water flow and pressure.

d. Input Device: Heating-water supply temperature; thermostat thermistor temperature sensor.

e. Input Device: Outdoor-air temperature; electric, outdoor-air-reset controller outdoor-air sensor.

f. Output Device: Control valve.

g. Display the following at the operator's workstation:

1) Outdoor-air temperature.

2) Heating-water supply temperature.

3) Heating-water supply temperature set point.

4) Control-valve position.

2. Scope: Heating-water system.

3. Purpose: Control of heating-water supply temperature at heating-water supply temperature input device in response to variable outdoor-air temperature input;

outdoor-air sensor.

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4. Conditions of the Test: Outdoor-air temperature input value may be overridden for this test.

a. Low Temperature: Outdoor-air temperature between minus 30 and

0 deg F.

b. Midrange Temperature: Outdoor-air temperature between 30 and 45 deg F.

c. High Temperature: Outdoor-air temperature above 65 deg F.

5. Acceptance Criteria: Heating-water supply temperature resets in straight-line relationship with outdoor-air temperature for the following reset schedule. Under all conditions, heating-water supply temperature is within 2.0 deg F of set point.

a. 195 deg F heating water when outdoor-air temperature is minus 30 deg F.

b. 130 deg F heating water when outdoor-air temperature is 65 deg F.

c. Under all conditions, heating-water supply temperature is within plus or minus 2.0 deg F of set point.

D. Control Primary Circulating Pump(s):

1. Prerequisites: Installation verification of the following:

a. Startup of heating-water pump(s).

b. Input Device: Outdoor-air temperature; electric, outdoor-air-reset controller outdoor-air sensor.

c. Output Device: Heating-water pump; DDC system command to starter relay.

d. Display the following at the operator's workstation:

1) Outdoor-air temperature.

2) Operating status of primary circulating pump(s).

2. Scope: Heating-water pump(s) and associated controls.

3. Purpose: On-off control of heating-water pump(s) in response to variable outdoor-air temperature input; electric, outdoor-air-reset controller outdoor-air sensor.

4. Conditions of the Test:

a. High Temperature: Outdoor-air temperature above 65 deg F.

b. Low Temperature: Outdoor-air temperature below 65 deg F.

5. Acceptance Criteria:

a. High Temperature: Pump(s) are off when outside-air temperature is above

65 deg F.

b. Low Temperature: Pump(s) are on when outside-air temperature is below

65 deg F.

3.9 TERMINAL UNIT EQUIPMENT Cx TESTS

A. Hydronic Unit Heater:

1. Prerequisites: Installation verification of the following:

a. Room Temperature Input Device: Room thermostat.

b. Room Temperature Output Device: Electronic control-valve operators.

c. Display the following at the operator's workstation:

1) Room/area served.

2) Room occupied/unoccupied.

3) Room temperature indication.

4) Room temperature set point.

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5) Room temperature set point, occupied.

6) Room temperature set point, unoccupied.

7) Control-valve position as percentage open.

2. Scope: Unit heater and associated controls.

3. Purpose:

a. Room temperature control.

4. Conditions of the Test:

a. Cx Test Demonstration Sampling Rate: 10 percent of each model/size unit.

b. Temperature Control - Observe temperature control until room temperature is stable at set point, plus or minus 3.0 deg F.

5. Acceptance Criteria:

a. Temperature Control:

1) Room temperature is stable at set point, plus or minus 3.0 deg F within 30 minutes.

END OF SECTION 230800

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SECTION 230923 - DIRECT DIGITAL CONTROL (DDC) SYSTEM FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. DDC system for monitoring and controlling of HVAC systems.

2. Delivery of selected control devices to equipment and systems manufacturers for factory installation and to HVAC systems installers for field installation.

3. It is the Benton Harbor Area School District’s goal to implement an “open/non-proprietary” Building Management System (BMS) that will allow products from various suppliers to be integrated into a unified system in order to provide flexibility for expansion, maintenance, and service of the system.

4. The BMS as provided in this specification shall be based on Tridium’s Niagara Framework and adhere to the open NCIS licensing.

a. The BMS shall be comprised of Java Application Control Engine of

Controllers (JACE) and shall connect to the District’s local area network.

b. Access to the BMS, either locally, or remotely from a central site, shall be accomplished through standard Web browsers via the internet and/or local area network.

c. Each JACE shall communicate to LonMark/LonTalk, BACnet, ModBus listed controllers, and other open and legacy protocol systems/devices.

d. The District shall be the named license holder of all software associated with any and all incremental work on the project. No exceptions allowed.”

5. It is the responsibility of the controls contractor to provide any hardware, software, control devices, or supplementary and miscellaneous items not mentioned in this specification that are necessary for a fully functional and integrated system of temperature controls, graphic interfaces, monitoring, and management.

a. Depict floor plans and each mechanical system, components, and data points on point-and-click graphics that will allow operators to perform all normal functions through Web Browser interface.

6. An existing Trane Control system is present at Fair Plain East Elementary school. The High School has a Tridium Niagara system controlling some equipment and Trane system that is monitored only by the Tridium. All new equipment installed as part of this work phase shall be controlled by a new Tridium DDC system via one new JACE panel in each building.

7. Basis of Design contact is Controls Solutions Inc, Derek Strong, 616-446- 9685, dstrong@csibas.com.

8. It is the responsibility of the controls contractor to provide any hardware, software, control devices, or supplementary and miscellaneous items not mentioned in this specification that are necessary for a fully functional and integrated system of temperature controls, graphic interfaces, monitoring, and management.

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B. Related Requirements:

1. Section 230923.12 "Control Dampers" for dampers and actuators that connect to

DDC systems.

2. Section 230993.11 "Sequence of Operations for HVAC DDC" for control sequences in DDC systems.

1.2 DEFINITIONS

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

B. Analog: A continuously varying signal value, such as current, flow, pressure, or temperature.

C. BACnet Specific Definitions:

1. BACnet: Building Automation Control Network Protocol, ASHRAE 135. A communications protocol allowing devices to communicate data over and services over a network.

2. BACnet Interoperability Building Blocks (BIBBs): BIBB defines a small portion of BACnet functionality that is needed to perform a particular task. BIBBs are combined to build the BACnet functional requirements for a device.

3. BACnet/IP: Defines and allows using a reserved UDP socket to transmit BACnet messages over IP networks. A BACnet/IP network is a collection of one or more IP subnetworks that share the same BACnet network number.

4. BACnet Testing Laboratories (BTL): Organization responsible for testing products for compliance with ASHRAE 135, operated under direction of BACnet International.

5. PICS (Protocol Implementation Conformance Statement): Written document that identifies the particular options specified by BACnet that are implemented in a device.

D. Binary: Two-state signal where a high signal level represents ON" or "OPEN" condition and a low signal level represents "OFF" or "CLOSED" condition. "Digital" is sometimes used interchangeably with "Binary" to indicate a two-state signal.

E. Controller: Generic term for any standalone, microprocessor-based, digital controller residing on a network, used for local or global control. Three types of controllers are indicated: Network Controller, Programmable Application Controller, and Application- Specific Controller.

F. Control System Integrator: An entity that assists in expansion of existing enterprise system and support of additional operator interfaces to I/O being added to existing enterprise system.

G. COV: Changes of value.

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H. DDC System Provider: Authorized representative of, and trained by, DDC system manufacturer and responsible for execution of DDC system Work indicated.

I. Distributed Control: Processing of system data is decentralized and control decisions are made at subsystem level. System operational programs and information are provided to remote subsystems and status is reported back. On loss of communication, subsystems shall be capable of operating in a standalone mode using the last best available data.

J. DOCSIS: Data-Over Cable Service Interface Specifications.

K. Gateway: Bidirectional protocol translator that connects control systems that use different communication protocols.

L. HLC: Heavy load conditions.

M. I/O: System through which information is received and transmitted. I/O refers to analog input (AI), binary input (BI), analog output (AO) and binary output (BO). Analog signals are continuous and represent control influences such as flow, level, moisture, pressure, and temperature. Binary signals convert electronic signals to digital pulses (values) and generally represent two-position operating and alarm status. "Digital," (DI and (DO), is sometimes used interchangeably with "Binary," (BI) and (BO), respectively.

N. LAN: Local area network.

O. LNS: LonWorks Network Services.

P. Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 V or for remote-control, signaling power-limited circuits.

Q. Mobile Device: A data-enabled phone or tablet computer capable of connecting to a cellular data network and running a native control application or accessing a web interface.

R. Modbus TCP/IP: An open protocol for exchange of process data.

S. MS/TP: Master-slave/token-passing, IEE 8802-3. Datalink protocol LAN option that uses twisted-pair wire for low-speed communication.

T. Network Controller: Digital controller, which supports a family of programmable application controllers and application-specific controllers, that communicates on peer-to-peer network for transmission of global data.

U. Network Repeater: Device that receives data packet from one network and rebroadcasts it to another network. No routing information is added to protocol.

V. Peer to Peer: Networking architecture that treats all network stations as equal partners.

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W. POT: Portable operator's terminal.

X. RAM: Random access memory.

Y. RF: Radio frequency.

Z. Router: Device connecting two or more networks at network layer.

AA. TCP/IP: Transport control protocol/Internet protocol.

BB. UPS: Uninterruptible power supply.

CC. USB: Universal Serial Bus.

DD. User Datagram Protocol (UDP): This protocol assumes that the IP is used as the underlying protocol.

EE. VAV: Variable air volume.

FF. WLED: White light emitting diode.

1.3 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product include the following:

1. Construction details, material descriptions, dimensions of individual components and profiles, and finishes.

2. Operating characteristics, electrical characteristics, and furnished accessories indicating process operating range, accuracy over range, control signal over range, default control signal with loss of power, calibration data specific to each unique application, electrical power requirements, and limitations of ambient operating environment, including temperature and humidity.

3. Product description with complete technical data, performance curves, and product specification sheets.

4. Installation, operation and maintenance instructions including factors effecting performance.

5. Bill of materials of indicating quantity, manufacturer, and extended model number for each unique product.

a. Operator workstations.

b. Servers.

c. Gateways.

d. Routers.

e. Protocol analyzers.

f. DDC controllers.

g. Enclosures.

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h. Electrical power devices.

i. Accessories.

j. Instruments.

k. Control dampers and actuators.

l. Control valves and actuators.

6. When manufacturer's product datasheets apply to a product series rather than a specific product model, clearly indicate and highlight only applicable information.

7. Each submitted piece of product literature shall clearly cross reference specification and drawings that submittal is to cover.

B. Software Submittal:

1. Cross-referenced listing of software to be loaded on each operator workstation, server, gateway, and DDC controller.

2. Description and technical data of all software provided, and cross-referenced to products in which software will be installed.

3. Operating system software, operator interface and programming software, color graphic software, DDC controller software, maintenance management software, and third-party software.

4. Listing and description of each constant used in engineering equations and a reference source to prove origin of each constant.

5. Description of operator interface to alphanumeric and graphic programming.

6. Description of each network communication protocol.

7. Description of system database, including all data included in database, database capacity and limitations to expand database.

8. Controlled Systems: Instrumentation list with element name, type of device, manufacturer, model number, and product data. Include written description of sequence of operation including schematic diagram.

C. Shop Drawings:

1. Include plans, elevations, sections, and mounting details where applicable.

2. Include details of product assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

3. Plan Drawings indicating the following:

a. Screened backgrounds of walls, structural grid lines, HVAC equipment, ductwork and piping.

b. Room names and numbers with coordinated placement to avoid interference with control products indicated.

c. Each desktop workstation, server, gateway, router, DDC controller, control panel instrument connecting to DDC controller, and damper and valve connecting to DDC controller, if included in Project.

d. Exact placement of products in rooms, ducts, and piping to reflect proposed installed condition.

e. Network communication cable and raceway routing.

f. Proposed routing of wiring, cabling, conduit, and tubing, coordinated with building services for review before installation.

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4. Schematic drawings for each controlled HVAC system indicating the following:

a. I/O points labeled with point names shown. Indicate instrument range, normal operating set points, and alarm set points. Indicate fail position of each damper and valve, if included in Project.

b. I/O listed in table format showing point name, type of device, manufacturer, model number, and cross-reference to product data sheet number.

c. A graphic showing location of control I/O in proper relationship to HVAC system.

d. Wiring diagram with each I/O point having a unique identification and indicating labels for all wiring terminals.

e. Unique identification of each I/O that shall be consistently used between different drawings showing same point.

f. Elementary wiring diagrams of controls for HVAC equipment motor circuits including interlocks, switches, relays and interface to DDC controllers.

g. Narrative sequence of operation.

h. Graphic sequence of operation, showing all inputs and output logical blocks.

5. Control panel drawings indicating the following:

a. Panel dimensions, materials, size, and location of field cable, raceways, and tubing connections.

b. Interior subpanel layout, drawn to scale and showing all internal components, cabling and wiring raceways, nameplates and allocated spare space.

c. Unique drawing for each panel.

6. DDC system network riser diagram indicating the following:

a. Each device connected to network with unique identification for each.

b. Interconnection of each different network in DDC system.

c. For each network, indicate communication protocol, speed and physical means of interconnecting network devices, such as copper cable type, or optical fiber cable type. Indicate raceway type and size for each.

d. Each network port for connection of an operator workstation or other type of operator interface with unique identification for each.

7. DDC system electrical power riser diagram indicating the following:

a. Each point of connection to field power with requirements

(volts/phase//hertz/amperes/connection type) listed for each.

b. Each control power supply including, as applicable, transformers, power-line conditioners, transient voltage suppression and high filter noise units, DC power supplies, and UPS units with unique identification for each.

c. Each product requiring power with requirements (volts/phase//hertz/amperes/connection type) listed for each.

d. Power wiring type and size, race type, and size for each.

8. Monitoring and control signal diagrams indicating the following:

a. Control signal cable and wiring between controllers and I/O.

b. Point-to-point schematic wiring diagrams for each product.

c. Control signal tubing to sensors, switches and transmitters.

d. Process signal tubing to sensors, switches and transmitters.

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9. Color graphics indicating the following:

a. Itemized list of color graphic displays to be provided.

b. For each display screen to be provided, a true color copy showing layout of pictures, graphics and data displayed.

c. Intended operator access between related hierarchical display screens.

D. System Description:

1. Full description of DDC system architecture, network configuration, operator interfaces and peripherals, servers, controller types and applications, gateways, routers and other network devices, and power supplies.

2. System and product operation under each potential failure condition including, but not limited to, the following:

a. Loss of power.

b. Loss of network communication signal.

c. Loss of controller signals to inputs and outpoints.

d. Operator workstation failure.

e. Gateway failure.

f. Network failure

g. Controller failure.

h. Instrument failure.

i. Control damper and valve actuator failure.

3. Complete bibliography of documentation and media to be delivered to Owner.

4. Description of testing plans and procedures.

5. Description of Owner training.

E. Delegated-Design Submittal: For DDC system products and installation indicated as being delegated.

1. Supporting documentation showing DDC system design complies with performance requirements indicated, including calculations and other documentation necessary to prove compliance.

2. Schedule and design calculations for control dampers and actuators.

3. Schedule and design calculations for control valves and actuators.

4. Schedule and design calculations for selecting flow instruments.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For DDC system to include in emergency, operation and maintenance manuals.

1. In addition to items specified in Section 017823 "Operation and Maintenance

Data," include the following:

a. Project Record Drawings of as-built versions of submittal Shop Drawings provided in electronic PDF format.

b. Testing and commissioning reports and checklists of completed final versions of reports, checklists, and trend logs.

c. As-built versions of submittal Product Data.

d. Names, addresses, e-mail addresses and 24-hour telephone numbers of

Installer and service representatives for DDC system and products.

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e. Operator's manual with procedures for operating control systems including logging on and off, handling alarms, producing point reports, trending data, overriding computer control and changing set points and variables.

f. Programming manuals with description of programming language and syntax, of statements for algorithms and calculations used, of point database creation and modification, of program creation and modification, and of editor use.

g. Engineering, installation, and maintenance manuals that explain how to:

1) Design and install new points, panels, and other hardware.

2) Perform preventive maintenance and calibration.

3) Debug hardware problems.

4) Repair or replace hardware.

h. Documentation of all programs created using custom programming language including set points, tuning parameters, and object database.

i. Backup copy of graphic files, programs, and database on electronic media such as DVDs.

j. List of recommended spare parts with part numbers and suppliers.

k. Complete original-issue documentation, installation, and maintenance information for furnished third-party hardware including computer equipment and sensors.

l. Complete original-issue copies of furnished software, including operating systems, custom programming language, operator workstation software, and graphics software.

m. Licenses, guarantees, and warranty documents.

n. Recommended preventive maintenance procedures for system components, including schedule of tasks such as inspection, cleaning, and calibration; time between tasks; and task descriptions.

o. Owner training materials.

1.6 MAINTENANCE MATERIAL SUBMITTALS

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

B. Include product manufacturers' recommended parts lists for proper product operation over four-year period following warranty period. Parts list shall be indicated for each year.

C. Furnish parts, as indicated by manufacturer's recommended parts list, for product operation during one-year period following warranty period.

D. Furnish quantity indicated of matching product(s) in Project inventory for each unique size and type of following:

1. Programmable Application Controller: One.

2. Application-Specific Controller: One.

3. Carbon Dioxide Sensor and Transmitter: Two.

4. Moisture Sensor and Transmitter: One.

5. Pressure Sensor and Transmitter: One.

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6. Temperature Sensor and Transmitter: Two.

7. General-Purpose Relay: Three.

8. Multifunction Time-Delay Relay: Two.

9. Latching Relay: One.

10. Current-Sensing Relay: One.

11. Combination On-Off Status Sensor and On-Off Relay: One.

12. Transformer: One.

1.7 QUALITY ASSURANCE

A. DDC System Manufacturer Qualifications:

1. Nationally recognized manufacturer of DDC systems and products.

2. DDC systems with similar requirements to those indicated for a continuous period of ten years within time of bid.

3. DDC systems and products that have been successfully tested and in use on at least three past projects.

4. Having complete published catalog literature, installation, operation and maintenance manuals for all products intended for use.

5. Having full-time in-house employees for the following:

a. Product research and development.

b. Product and application engineering.

c. Product manufacturing, testing and quality control.

d. Technical support for DDC system installation training, commissioning and troubleshooting of installations.

e. Owner operator training.

B. DDC System Provider Qualifications:

1. Authorized representative of, and trained by, DDC system manufacturer.

2. In-place facility located within 120 miles of Project.

3. Demonstrated past experience with installation of DDC system products being installed for period within five consecutive years before time of bid.

4. Demonstrated past experience on five projects of similar complexity, scope and value.

5. Each person assigned to Project shall have demonstrated past experience.

6. Staffing resources of competent and experienced full-time employees that are assigned to execute work according to schedule.

7. Service and maintenance staff assigned to support Project during warranty period.

8. Product parts inventory to support on-going DDC system operation for a period of not less than 5 years after Substantial Completion.

9. DDC system manufacturer's backing to take over execution of Work if necessary to comply with requirements indicated. Include Project-specific written letter, signed by manufacturer's corporate officer, if requested.

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1.8 WARRANTY

A. Manufacturer's Warranty: Manufacturer and Installer agree to repair or replace products that fail in materials or workmanship within specified warranty period.

1. Failures shall be adjusted, repaired, or replaced at no additional cost or reduction in service to Owner.

2. Include updates or upgrades to software and firmware if necessary to resolve deficiencies.

a. Install updates only after receiving Owner's written authorization.

3. Warranty service shall occur during normal business hours and commence within 24 hours of Owner's warranty service request.

4. Warranty Period: Two year(s) from date of Substantial Completion.

a. For Gateway: Two-year parts and labor warranty for each.

PART 2 - PRODUCTS

2.1 DDC SYSTEM MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one the following:

1. Automated Logic Corporation.

2. Delta Controls Inc.

3. Honeywell International Inc.

4. Johnson Controls, Inc.

5. Schneider Electric USA, Inc.

6. Siemens Building Technologies, Inc.

7. Trane.

8. Distech

2.2 DDC SYSTEM DESCRIPTION

A. Microprocessor-based monitoring and 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 to achieve a set of predefined conditions.

1. DDC system shall consist of a high-speed, peer-to-peer network of distributed

DDC controllers, other network devices, operator interfaces, and software.

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

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2.3 WEB ACCESS

A. DDC system shall be web based.

1. Web-Based Access to DDC System:

a. DDC system software shall be based on server thin-client architecture, designed around open standards of web technology. DDC system server shall be accessed using a web browser over DDC system network, using Owner's LAN, and remotely over Internet through Owner's LAN.

b. Intent of thin-client architecture is to provide operators complete access to DDC system via a web browser. No special software other than a web browser shall be required to access graphics, point displays, and trends; to configure trends, points, and controllers; and to edit programming.

c. Web access shall be password protected.

2.4 PERFORMANCE REQUIREMENTS

A. Delegated Design: Engage a qualified professional to design DDC system to satisfy requirements indicated.

1. System Performance Objectives:

a. DDC system shall manage HVAC systems.

b. DDC system control shall operate HVAC systems to achieve optimum operating costs while using least possible energy and maintaining specified performance.

c. DDC system shall respond to power failures, HVAC equipment failures, and adverse and emergency conditions encountered through connected I/O points.

d. DDC system shall operate while unattended by an operator and through operator interaction.

e. DDC system shall record trends and transaction of events and produce report information such as performance, energy, occupancies, and equipment operation.

B. Surface-Burning Characteristics: Products installed in ducts, equipment, and return-air paths shall comply with ASTM E 84; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency.

1. Flame-Spread Index: 25 or less.

2. Smoke-Developed Index: 50 or less.

C. DDC System Speed:

1. Response Time of Connected I/O:

a. AI and BI point values connected to DDC system shall be updated at least every five seconds for use by DDC controllers. Points used globally shall also comply with this requirement.

b. AO and BO points connected to DDC system shall begin to respond to controller output commands within two second(s). Global commands shall also comply with this requirement.

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2. Display of Connected I/O:

a. Analog and binary point COV connected to DDC system shall be updated and displayed at least every 10 seconds for use by operator.

b. Alarms of analog and digital points connected to DDC system shall be displayed within 45 seconds of activation or change of state.

c. Graphic display refresh shall update within eight seconds.

d. Point change of values and alarms displayed from workstation to workstation when multiple operators are viewing from multiple workstations shall not exceed graphic refresh rate indicated.

D. Network Bandwidth: Design each network of DDC system to include at least 30 percent available spare bandwidth with DDC system operating under normal and heavy load conditions indicated. Calculate bandwidth usage, and apply a safety factor to ensure that requirement is satisfied when subjected to testing under worst case conditions.

E. DDC System Data Storage:

1. Include capability to archive not less than 48 consecutive months of historical data for all I/O points connected to system, including alarms, event histories, transaction logs, trends and other information indicated.

2. Local Storage:

a. Provide server with data storage indicated. Server(s) shall use IT industry standard database platforms and be capable of functions described in "DDC Data Access" Paragraph.

3. Cloud Storage:

a. Provide application-based and web browser interfaces to configure, upload, download, and manage data, and service plan with storage adequate to store all data for term indicated. Cloud storage shall use IT industry standard database platforms and be capable of functions described in "DDC Data Access" Paragraph.

F. DDC Data Access:

1. When logged into the system, operator shall be able to also interact with any

DDC controller connected to DDC system as required for functional operation of DDC system.

2. System(s) shall be used for application configuration; for archiving, reporting and trending of data; for operator transaction archiving and reporting; for network information management; for alarm annunciation; and for operator interface tasks and controls application management.

G. Future Expandability:

1. DDC system size shall be expandable to an ultimate capacity of at least two times total I/O points indicated.

2. Additional DDC controllers, I/O and associated wiring shall be all that is needed to achieve ultimate capacity. Initial network infrastructure shall be designed and installed to support ultimate capacity.

3. Operator interfaces installed initially shall not require hardware and software additions and revisions for ultimate capacity.

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H. Input Point Displayed Accuracy: Input point displayed values shall meet following end-to-end overall system accuracy, including errors associated with meter, sensor, transmitter, lead wire or cable, and analog to digital conversion.

1. Flow:

a. Air: Within 5 percent of design flow rate.

b. Air (Terminal Units): Within 10 percent of design flow rate.

c. Water: Within 5 percent of design flow rate.

2. Gas:

a. Carbon Dioxide: Within 50 ppm.

3. Moisture (Relative Humidity):

a. Within 5 percent RH.

4. Pressure:

a. Air, Ducts and Equipment: 1 percent of instrument range.

b. Space: Within 1 percent of instrument range.

c. Water: Within 1 percent of instrument range.

5. Temperature, Dew Point:

a. Air: Within 1 deg F.

b. Space: Within 1 deg F.

c. Outdoor: Within 3 deg F.

6. Temperature, Dry Bulb:

a. Air: Within 1 deg F.

b. Space: Within 1 deg F.

c. Outdoor: Within 2 deg F.

d. Heating Hot Water: Within 1 deg F.

e. Temperature Difference: Within 0.25 deg F.

f. Other Temperatures Not Indicated: Within 1 deg F.

7. Temperature, Wet Bulb:

a. Air: Within 1 deg F.

b. Space: Within 1 deg F.

c. Outdoor: Within 2 deg F.

I. Precision of I/O Reported Values: Values reported in database and displayed shall have following precision:

1. Current:

a. Milliamperes: Nearest 1/100th of a milliampere.

b. Amperes: Nearest 1/10th of an ampere up to 100 A; nearest ampere for

100 A and more.

2. Flow:

a. Air: Nearest 1/10th of a cfm through 100 cfm; nearest cfm between 100 and 1000 cfm; nearest 10 cfm between 1000 and 10,000 cfm; nearest 100 cfm above 10,000 cfm.

b. Water: Nearest 1/10th gpm through 100 gpm; nearest gpm between 100 and 1000 gpm; nearest 10 gpm between 1000 and 10,000 gpm; nearest 100 gpm above 10,000 gpm.

3. Gas:

a. Carbon Dioxide (ppm): Nearest ppm.

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4. Moisture (Relative Humidity):

a. Relative Humidity (Percentage): Nearest 1 percent.

5. Position, Dampers and Valves (Percentage Open): Nearest 1 percent.

6. Pressure:

a. Air, Ducts and Equipment: Nearest 1/10th in. w.c.

b. Space: Nearest 1/100th in. w.c. (Nearest 1/10th Pa).

c. Water: Nearest 1/10 psig through 100 psig, nearest psig above 100 psig.

7. Temperature:

a. Air, Ducts and Equipment: Nearest 1/10th of a degree.

b. Outdoor: Nearest degree.

c. Space: Nearest 1/10th of a degree.

d. Heating Hot Water: Nearest degree.

8. Voltage: Nearest 1/10 volt up to 100 V; nearest volt above 100 V.

J. Control Stability: Control variables indicated within the following limits:

1. Flow:

a. Air, Ducts and Equipment, except Terminal Units: Within 5 percent of design flow rate.

b. Air, Terminal Units: Within 10 percent of design flow rate.

c. Water: Within 5 percent of design flow rate.

2. Gas:

a. Carbon Dioxide: Within 50 ppm.

3. Moisture (Relative Humidity):

a. Within 5 percent RH.

4. Pressure:

a. Air, Ducts and Equipment: 1 percent of instrument range.

b. Space: Within 1 percent of instrument range.

c. Water: Within 1 percent of instrument range.

5. Temperature, Dew Point:

a. Air: Within 1 deg F.

b. Space: Within 1 deg F.

6. Temperature, Dry Bulb:

a. Air: Within 2 deg F.

b. Space: Within 2 deg F.

c. Heating Hot Water: Within 2 deg F.

7. Temperature, Wet Bulb:

a. Air: Within 1 deg F.

b. Space: Within 1 deg F.

K. Environmental Conditions for Controllers, Gateways, and Routers:

1. Products shall operate without performance degradation under ambient environmental temperature, pressure and humidity conditions encountered for installed location.

a. If product alone cannot comply with requirement, install product in a protective enclosure that is isolated and protected from conditions impacting performance. Enclosure shall be internally insulated, electrically heated, cooled and ventilated as required by product and application.

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2. Products shall be protected with enclosures satisfying the following minimum requirements unless more stringent requirements are indicated. Products not available with integral enclosures complying with requirements indicated shall be housed in protective secondary enclosures. Installed location shall dictate the following NEMA 250 enclosure requirements:

a. Outdoors, Protected: Type 2.

b. Outdoors, Unprotected: Type 4X.

c. Indoors, Heated with Filtered Ventilation: Type 1.

d. Indoors, Heated with Non-Filtered Ventilation: Type 2.

e. Indoors, Heated and Air Conditioned: Type 1.

f. Mechanical Equipment Rooms:

1) Chiller and Boiler Rooms: Type 12.

2) Air-Moving Equipment Rooms: Type 2.

g. Localized Areas Exposed to Washdown: Type 4X.

h. Within Duct Systems and Air-Moving Equipment Not Exposed to Possible

Condensation: Type 2.

i. Within Duct Systems and Air-Moving Equipment Exposed to Possible

Condensation: Type 4.

j. Hazardous Locations: Explosion-proof rating for condition.

L. Environmental Conditions for Instruments and Actuators:

1. Instruments and actuators shall operate without performance degradation under the ambient environmental temperature, pressure, humidity, and vibration conditions specified and encountered for installed location.

a. If instruments and actuators alone cannot comply with requirement, install instruments and actuators in protective enclosures that are isolated and protected from conditions impacting performance. Enclosure shall be internally insulated, electrically heated, cooled and ventilated as required by instrument and application.

2. Instruments, actuators and accessories shall be protected with enclosures satisfying the following minimum requirements unless more stringent requirements are indicated. Instruments and actuators not available with integral enclosures complying with requirements indicated shall be housed in protective secondary enclosures. Installed location shall dictate the following NEMA 250 enclosure requirements:

a. Outdoors, Protected: Type 2.

b. Outdoors, Unprotected: Type 4X.

c. Indoors, Heated with Filtered Ventilation: Type 1.

d. Indoors, Heated with Non-Filtered Ventilation: Type 2.

e. Indoors, Heated and Air-conditioned: Type 1.

f. Mechanical Equipment Rooms:

1) Chiller and Boiler Rooms: Type 12.

2) Air-Moving Equipment Rooms: Type 2.

g. Localized Areas Exposed to Washdown: Type 4X.

h. Within Duct Systems and Air-Moving Equipment Not Exposed to Possible

Condensation: Type 2.

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i. Within Duct Systems and Air-Moving Equipment Exposed to Possible Condensation: Type 4.

j. Hazardous Locations: Explosion-proof rating for condition.

M. Electric Power Quality:

1. Power-Line Surges:

a. Protect DDC system products connected to ac power circuits from power-line surges to comply with requirements of IEEE C62.41.

b. Do not use fuses for surge protection.

c. Test protection in the normal mode and in the common mode, using the following two waveforms:

1) 10-by-1000-mic.sec. waveform with a peak voltage of 1500 V and a peak current of 60 A.

2) 8-by-20-mic.sec. waveform with a peak voltage of 1000 V and a peak current of 500 A.

2. Power Conditioning:

a. Protect susceptible DDC system products connected to ac power circuits from irregularities and noise rejection. Characteristics of power-line conditioner shall be as follows:

1) At 85 percent load, output voltage shall not deviate by more than plus or minus 1 percent of nominal when input voltage fluctuates between minus 20 percent to plus 10 percent of nominal.

2) During load changes from zero to full load, output voltage shall not deviate by more than plus or minus 3 percent of nominal.

3) Accomplish full correction of load switching disturbances within five cycles, and 95 percent correction within two cycles of onset of disturbance.

4) Total harmonic distortion shall not exceed 3-1/2 percent at full load.

3. Ground Fault: Protect products from ground fault by providing suitable grounding.

Products shall not fail due to ground fault condition.

N. Backup Power Source:

1. HVAC systems and equipment served by a backup power source shall have associated DDC system products that control such systems and equipment also served from a backup power source.

O. Continuity of Operation after Electric Power Interruption:

1. Equipment and associated factory-installed controls, field-installed controls, electrical equipment, and power supply connected to building normal and backup power systems shall automatically return equipment and associated controls to operating state occurring immediately before loss of normal power, without need for manual intervention by operator when power is restored either through backup power source or through normal power if restored before backup power is brought online.

2.5 SYSTEM ARCHITECTURE

A. System architecture shall consist of no more than three levels of LANs.

1. Level one LAN shall connect network controllers and operator workstations.

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2. Level two LAN shall connect programmable application controllers to other programmable application controllers, and to network controllers.

3. Level three LAN shall connect application-specific controllers to programmable application controllers and network controllers.

B. Minimum Data Transfer and Communication Speed:

1. LAN Connecting Operator Workstations and Network Controllers: 10 Mbps.

2. LAN Connecting Programmable Application Controllers: 1000 kbps.

3. LAN Connecting Application-Specific Controllers: 76,800 bps.

C. DDC system shall consist of dedicated LANs that are not shared with other building systems and tenant data and communication networks.

D. System architecture shall be modular and have inherent ability to expand to not less than two times system size indicated with no impact to performance indicated.

E. System architecture shall perform modifications without having to remove and replace existing network equipment.

F. Number of LANs and associated communication shall be transparent to operator. All I/O points residing on any LAN shall be capable of global sharing between all system LANs.

G. System design shall eliminate dependence on any single device for system alarm reporting and control execution. Each controller shall operate independently by performing its' own control, alarm management and historical data collection.

2.6 DDC SYSTEM OPERATOR INTERFACES

A. Operator Means of System Access: Operator shall be able to access entire DDC system through any of multiple means, including, but not limited to, the following:

1. Desktop and portable workstation with hardwired connection through LAN port.

2. Portable operator terminal with hardwired connection through LAN port.

3. Portable operator workstation with wireless connection through LAN router.

4. Mobile device and application with secured wireless connection through LAN router or cellular data service.

5. Remote connection through web access.

B. Access to system, regardless of operator means used, shall be transparent to operator.

C. Network Ports: For hardwired connection of desktop or portable workstation. Network port shall be easily accessible, properly protected, clearly labeled, and installed at the following locations:

1. Each mechanical equipment room.

2. Each different roof level with roof-mounted air-handling units or rooftop units.

3. Security system command center.

4. Fire-alarm system command center.

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D. Desktop Workstations:

1. Connect to DDC system Level one LAN through a communications port directly on LAN or through a communications port on a DDC controller.

2. Able to communicate with any device located on any DDC system LAN.

E. Portable Workstations:

1. Connect to DDC system Level one LAN through a communications port directly on LAN or through a communications port on a DDC controller.

2. Able to communicate with any device located on any DDC system LAN.

3. Connect to DDC system Level two or Level three LAN through a communications port on an application-specific controller, or a room temperature sensor connected to an application-specific controller.

4. Connect to system through a wireless router connected to Level one LAN.

5. Portable workstation shall be able to communicate with any device connected to any system LAN regardless of point of physical connection to system.

6. Monitor, program, schedule, adjust set points, and report capabilities of I/O connected anywhere in system.

7. Have dynamic graphic displays that are identical to desktop workstations.

F. Mobile Device:

1. Connect to system through a wireless router connected to LAN.

2. Able to communicate with any DDC controller connected to DDC system using a dedicated application and secure web access.

G. Critical Alarm Reporting:

1. Operator-selected critical alarms shall be sent by DDC system to notify operator of critical alarms that require immediate attention.

2. DDC system shall send alarm notification to multiple recipients that are assigned for each alarm.

3. DDC system shall notify recipients by any or all means, including e-mail, text message, and prerecorded phone message to mobile and landline phone numbers.

H. Simultaneous Operator Use: Capable of accommodating up to five simultaneous operators that are accessing DDC system through any one of operator interfaces indicated.

2.7 NETWORK COMMUNICATION PROTOCOL

A. Network communication protocol(s) used throughout entire DDC system shall be open to Owner and available to other companies for use in making future modifications to DDC…