VAN BUREN INTERMEDIATE SCHOOL DISTRICT

5-6730 VBISD CTE IMPROVEMENTS

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

SECTION 23 09 23 - DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

(ADDENDUM 002)

PART 1 GENERAL

1.1 SECTION INCLUDES

A. System description.

B. Operator interface.

C. Networks D. Controllers.

E. Power supplies and line filtering.

F. System software.

G. Controller software.

1.2 RELATED REQUIREMENTS

A. Section 01 91 13 - General Commissioning Requirements B. Section 01 91 14 - Commissioning Authority Responsibilities C. Section 23 08 00 - Commissioning of HVAC D. Section 23 09 13 - Instrumentation and Control Devices for HVAC.

E. Section 23 09 93 - Sequence of Operations for HVAC Controls.

F. Section 26 05 83 - Wiring Connections: Electrical characteristics and wiring connections.

1.3 REFERENCE STANDARDS

A. ASHRAE Std 135 - A Data Communication Protocol for Building Automation and Control

Networks.

B. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials.

C. MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests.

D. Modbus - The Modbus Organization Communications Protocol..

E. NEMA EN 10250 - Enclosures for Electrical Equipment (1000 Volts Maximum).

F. NFPA 70 - National Electrical Code.

G. UL (DIR) - Online Certifications Directory.

1.4 PRE-INSTALLATION MEETING

A. Conduct a pre-installation coordination conference before submitting on the Building

Management System. Include at a minimum, the Construction Manager, owner’s representative and the mechanical design engineer.

B. This meeting will assist all representatives in coordinating and refining the installation of the Building Management System. Include at a minimum the following items:

1. Proposed control panel locations and approximate sizes.

2. Understanding of who is providing and installing control related devices. i.e. factory provided controls, Variable Frequency Drives (VFD’s), air flow stations, any additional flow devices, phase or power monitoring equipment and control dampers and actuators.

3. Use of conduit and surface mounted raceway versus concealment in walls and ceiling areas.

4. Room temperature sensor types and proposed locations for each type. i.e. plate type, setpoint adjust, unoccupied override and any display type sensors.

a. Understand plate-type sensor application in corridors, entrances, lobbies, gymnasium and cafeterias, auditoriums, and other public areas.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

b. Define setpoint adjust application (where owner prefers and engineer recommends), types and preferences for owner and/or BMS contractor.

c. Define override button application, type and permitted operation.

5. CO2 and humidity sensor types, quantity, and placement.

6. Control sequence details and questions.

7. Proposed time schedules and building layout. How are areas grouped, how will override and occupancy sensors interact with system?

8. Describe control integration to lighting control system, boilers, chillers, VFD’s, power monitoring, natural gas monitoring, snowmelt systems, generator, fire alarm system. How and what protocols.

9. Interface to owner’s network, server type and who is providing.

10. Graphic screen examples and sequencing, navigation paths, point designation and display, point overrides, time schedule display and change procedures. Will the owner have ability to modify setpoints, parameters and graphic screens?

11. How local and remote access to graphics is accomplished. Phone, tablet, and computer interface descriptions.

12. Pre-commissioning control start-up procedures contractor plans to implement.

13. Describe understanding of interaction and cooperation with TAB and commissioning process.

14. Any additional clarification requested from BMS contractor, owner, design engineer or CM.

1.5 SUBMITTALS

A. See Section 01 30 00 - Administrative Requirements for submittal procedures.

B. Product Data: Provide data for each system component and software module.

C. Shop Drawings:

1. Indicate trunk cable schematic showing programmable control unit locations, and trunk data conductors.

2. List connected data points, including connected control unit and input device.

3. Indicate system graphics indicating monitored systems, data (connected and calculated) point addresses, and operator notations.

4. Show system configuration with peripheral devices, batteries, power supplies, diagrams, modems, and interconnections.

5. Indicate description and sequence of operation of operating, user, and application software.

D. Manufacturer's Instructions: Indicate manufacturer's installation instructions for all manufactured components.

E. Project Record Documents: Record actual locations of control components, including control units, thermostats, and sensors.

1. Revise shop drawings to reflect actual installation and operating sequences.

2. Include submittals data in final "Record Documents" form.

F. Operation and Maintenance Data:

1. Include interconnection wiring diagrams complete field installed systems with identified and numbered, system components and devices.

2. Include keyboard illustrations and step-by-step procedures indexed for each operator function.

3. Include inspection period, cleaning methods, cleaning materials recommended, and calibration tolerances.

G. Warranty: Submit manufacturer's warranty and ensure forms have been filled out in Owner's name and registered with manufacturer.

1.6 QUALITY ASSURANCE

A. Perform work in accordance with NFPA 70.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

B. Designer Qualifications: Perform design of system using manufacturer's software under direct supervision of a Professional Engineer experienced in design of this type of work and licensed in the State in which the Project is located.

C. Manufacturer Qualifications: Company specializing in manufacturing products specified in this section with minimum five years of documented experience.

D. Installer Qualifications: Company specializing in performing work of the type specified and with minimum three years of documented experience.

E. Products Requiring Electrical Connection: Listed and classified by UL (DIR) as suitable for purpose specified and indicated.

1.7 WARRANTY

A. See Section 01 78 00 - Closeout Submittals for additional warranty requirements.

B. Provide five year manufacturer's warranty for field programmable micro-processor based units.

1.8 PROTECTION OF SOFTWARE RIGHTS

A. Prior to delivery of software, the Owner and the party providing the software will enter into a software license agreement with provisions for the following:

1. Limiting use of software to equipment provided under these specifications.

2. Limiting copying.

3. Preserving confidentiality.

4. Prohibiting transfer to a third party.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Distech Controls Honeywell International, Inc.

Trane

B. Tridium / Niagara

2.2 SYSTEM DESCRIPTION

A. Automatic temperature control field monitoring and control system using field programmable micro-processor based units.

B. Base system on distributed system of fully intelligent, stand-alone controllers, operating in a multi-tasking, multi-user environment on BACnet MS/TP or BACnet IP network, with central and remote hardware, software, and interconnecting wire and conduit.

C. Include computer software and hardware, operator input/output devices, control units, local area networks (LAN), sensors, control devices, actuators.

D. Controls for terminal units, radiation, reheat coils, unit heaters, fan coils, and the like when directly connected to the control units.

E. Provide control systems consisting of sensors, thermostats, control valves, dampers and operators, indicating devices, interface equipment and other apparatus and accessories required to operate mechanical systems, and to perform functions specified.

F. Include installation, calibration, commissioning, supervision, adjustments, and fine tuning necessary for complete and fully operational system.

G. Any Vykon or name branded Jace or Supervisory package will be provided with:

1. Open NiCS licensing including: the following components set to “ALL”:

“accept.station.in=”, “accept.station.out=”, “accept.wb.in=” and “accept.wb.out=”

2. A minimum of 3-year Software Maintenance Agreement (SMA) license.

3. License for, at a minimum, 20% additional devices than are needed at time of installation.

4. JACE and station Pass Phrases and administrative Passwords provided to owner before substantial completion.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

5. Upgrade the supervisory package and each Jace to the most recent version of software at time of substantial completion of control system.

2.3 PERFORMANCE REQUIREMENTS

A. Surface-Burning: Products shall comply with ASTM E84.

1. Flame-Spread: 25.

2. Smoke-Developed: 50.

B. Network Bandwidth: DDC system shall be designed for a minimum of 30% spare bandwidth with DDC system operating at full capacity.

C. Data Storage:

1. Provide local or cloud based storage capacity for a minimum of 36 consecutive months of system/trending data for 100% of all system points.

D. Expandability:

1. DDC system shall be expandable to double the total initial system capacity including controllers and wiring bandwidth.

2. Operator interface shall have sufficient capacity to accommodate the doubled capacity without any upgrades.

E. Accuracy:

1. Airflow: +/-2%.

2. Waterflow: +/-2%.

3. Gas:

a. Carbon Dioxide: +/-25 ppm.

b. Carbon Monoxide: +/-5 ppm.

c. Nitrogen Doxide: +/-5 ppb.

d. Refrigerant: +/-2.5%.

4. Pressure: +/-1%.

5. Temperature, Dry Bulb: +/- 1 degrees F.

6. Temperature, Wet Bulb: +/- 1 degrees F.

7. Humidity: +/-2%.

F. Enclosure Requirements shall comply with the following NEMA EN 10250 enclosure requirements:

1. Outdoors: Type 4X.

2. Indoors: Type 2.

3. Mechanical Equipment Rooms: Type 4.

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

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

G. Backup Power Source:

1. HVAC systems and equipment connected to backup power/generator shall have all associated controls and controllers supplied with backup power as well.

2.4 OPERATOR INTERFACE

A. DDC system shall be Web based. The web-based interface will provide real-time data visualization, control capabilities, and historical data analysis.

1. Resides on high speed network with building controllers.

2. Connected to server for full access to all system information.

B. Server, controllers, and control backbone to communicate using BACnet protocol and addressing.

C. Minimum Communication Protocols:

1. BACnet protocol to comply with ASHRAE Std 135.

D. Hardware:

1. Server to be provided by owner.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

2. Network Ports: For hardwired connection of portable workstation. Network port shall be accessible, protected, labeled, and installed at the following locations:

a. Each mechanical equipment room.

2.5 NETWORKS

A. Acceptable Communication Protocols:

1. ASHRAE Std 135, BACnet B. Acceptable communication buses:

1. IP/Ethernet

2. Fiber Optic

2.6 CONTROLLERS

A. Building Controllers:

1. General:

a. Manage global strategies by one or more, independent, standalone, microprocessor based controllers.

b. Provide sufficient memory to support controller's operating system, database, and programming requirements.

c. Share data between networked controllers.

d. Controller operating system manages input and output communication signals allowing distributed controllers to share real and virtual object information and allowing for central monitoring and alarms.

e. Utilize real-time clock for scheduling.

f. Continuously check processor status and memory circuits for abnormal operation.

g. Controller to assume predetermined failure mode and generate alarm notification upon detection of abnormal operation.

h. Communication with other network devices to be based on assigned protocol.

2. Communication:

a. Controller to reside on a BACnet network using ISO 8802-3 (ETHERNET) Data

Link/Physical layer protocol.

b. Perform routing when connected to a network of custom application and application specific controllers.

c. Provide service communication port for connection to a portable operator's terminal or hand held device with compatible protocol.

3. External Input-Output (I-O) Data Bus:

a. Input only modules.

b. Output only modules.

c. Variable frequency drives (VFD's).

d. Universal I-O module (configurable).

e. Multiple Input Output ( I-O) Module:

1) IAQ: Temperature, humidity, and CO2.

2) Audio: Microphone, tone generator, and speaker.

3) Input and output terminals to monitor or control local devices.

4) Occupancy: Light and thermal sensing with multi-colored LED feedback.

4. Anticipated Environmental Ambient Conditions:

a. Outdoors and/or in Wet Ambient Conditions:

1) Mount within waterproof enclosures.

2) Rated for operation at -40 to 150 degrees F..

b. Conditioned Space:

1) Mount within dustproof enclosures.

2) Rated for operation at 32 to 120 degrees F.

5. Provisions for Serviceability:

a. Diagnostic LEDs for power, communication, and processor.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

b. Make all wiring connections to field removable, modular terminal strips, or to a termination card connected by a ribbon cable.

6. Memory: In the event of a power loss, maintain all BIOS and programming information for a minimum of 72 hours.

7. Power and Noise Immunity:

a. Maintain operation at 90 to 110 percent of nominal voltage rating.

b. Perform orderly shutdown below 80 percent of nominal voltage.

c. Operation protected against electrical noise of 5 to 120 Hz and from keyed radios up to 5 W. at 3 feet.

B. Custom Application Controller:

1. General:

a. Provide sufficient memory to support controller's operating system, database, and programming requirements.

b. Share data between networked, microprocessor based controllers.

c. Controller operating system manages input and output communication signals allowing distributed controllers to share real and virtual object information and allowing for central monitoring and alarms.

d. Utilize real-time clock for scheduling.

e. Continuously check processor status and memory circuits for abnormal operation.

f. Controller to assume predetermined failure mode and generate alarm notification upon detection of abnormal operation.

g. Communication with other network devices to be based on assigned protocol.

2. Communication:

a. Controller to reside on a BACnet network using MS/TP Data Link/Physical layer or

ISO 8802-3 (ETHERNET) Data Link/Physical layer protocol.

b. Provide service communication port for connection to a portable operator's terminal or hand held device with compatible protocol.

3. Anticipated Environmental Ambient Conditions:

a. Outdoors and/or in Wet Ambient Conditions:

1) Mount within waterproof enclosures.

2) Rated for operation at -40 to 150 degrees F.

b. Conditioned Space:

1) Mount within dustproof enclosures.

2) Rated for operation at 32 to 120 degrees F.

4. Provisions for Serviceability:

a. Diagnostic LED's for power, communication, and processor.

b. Make all wiring connections to field removable, modular terminal strips, or to a termination card connected by a ribbon cable.

5. Memory: In the event of a power loss, maintain all BIOS and programming information for a minimum of 72 hours.

6. Power and Noise Immunity:

a. Maintain operation at 90 to 110 percent of nominal voltage rating.

b. Perform orderly shutdown below 80 percent of nominal voltage.

c. Operation protected against electrical noise of 5 to 120 Hz and from keyed radios up to 5 W. at 3 feet.

C. Application Specific Controllers:

1. General:

a. Not fully user programmable, microprocessor based controllers dedicated to control specific equipment.

b. Customized for operation within the confines of equipment served.

c. Communication with other network devices to be based on assigned protocol.

2. Communication:

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

a. Controller to reside on a BACnet network using MS/TP Data Link/Physical layer or ISO 8802-3 (ETHERNET) Data Link/Physical layer protocol.

b. Provide service communication port for connection to a portable operator's terminal or hand held device with compatible protocol.

3. Anticipated Environmental Ambient Conditions:

a. Outdoors and/or in Wet Ambient Conditions:

1) Mount within waterproof enclosures.

2) Rated for operation at-40 to 150 degrees F. .

b. Conditioned Space:

1) Mount within dustproof enclosures.

2) Rated for operation at 32 to 120 degrees F.

4. Provisions for Serviceability:

a. Diagnostic LEDs for power, communication, and processor.

b. Make all wiring connections to field removable, modular terminal strips, or to a termination card connected by a ribbon cable.

5. Memory: In the event of a power loss, maintain all BIOS and programming information for a minimum of 72 hours.

6. Power and Noise Immunity:

a. Maintain operation at 90 to 110 percent of nominal voltage rating.

b. Perform orderly shutdown below 80 percent of nominal voltage.

c. Operation protected against electrical noise of 5 to 120 Hz and from keyed radios up to 5 W at 3 feet.

D. Input/Output Interface:

1. Hardwired inputs and outputs tie into the DDC system through building, custom application, or application specific controllers.

2. All Input/Output Points:

a. Protect controller from damage resulting from any point short-circuiting or grounding and from voltage up to 24 volts of any duration.

b. Provide universal type for building and custom application controllers where input or output is software designated as either binary or analog type with appropriate properties.

3. Binary Inputs:

a. Allow monitoring of On/Off signals from remote devices.

b. Provide wetting current of 12 mA minimum, compatible with commonly available control devices and protected against the effects of contact bounce and noise.

c. Sense dry contact closure with power provided only by the controller.

4. Pulse Accumulation Input Objects: Comply with all requirements of binary input objects and accept up to 10 pulses per second.

5. Analog Inputs:

a. Allow for monitoring of low voltage 0 to 10 VDC, 4 to 20 mA current, or resistance signals (thermistor, RTD).

b. Compatible with and field configurable to commonly available sensing devices.

6. Binary Outputs:

a. Used for On/Off operation or a pulsed low-voltage signal for pulse width modulation control.

b. Outputs provided with three position (On/Off/Auto) override switches.

c. Status lights for building and custom application controllers to be selectable for normally open or normally closed operation.

7. Analog Outputs:

a. Monitoring signal provides a 0 to 10 VDC or a 4 to 20 mA output signal for end device control.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

b. Provide status lights and two position (AUTO/MANUAL) switch for building and custom application controllers with manually adjustable potentiometer for manual override on building and custom application controllers.

c. Drift to not exceed 0.4 percent of range per year.

8. System Object Capacity:

a. System size to be expandable to twice the number of input output objects required by providing additional controllers, including associated devices and wiring.

b. Hardware additions or software revisions for the installed operator interfaces are not to be required for future, system expansions.

2.7 POWER SUPPLIES AND LINE FILTERING

A. Power Supplies:

1. Provide UL (DIR) listed control transformers with Class 2 current limiting type or over-current protection in both primary and secondary circuits for Class 2 service as required by the NEC.

2. Limit connected loads to 80 percent of rated capacity.

3. Match DC power supply to current output and voltage requirements.

4. Unit to be full wave rectifier type with output ripple of 5.0 mV maximum peak to peak.

5. Regulation to be 1 percent combined line and load with 100 microsecond response time for 50 percent load changes.

6. Provide over-voltage and over-current protection to withstand a 150 percent current overload for 3 seconds minimum without trip-out or failure.

7. Operational Ambient Conditions: 32 to 120 degrees F.

8. EM/RF meets FCC Class B and VDE 0871 for Class B and MIL-STD-810 for shock and vibration.

9. Line voltage units UL (DIR) recognized and CSA approved.

B. Power Line Filtering:

1. Provide external or internal transient voltage and surge suppression component for all servers and controllers.

2. Minimum surge protection attributes:

a. Dielectric strength of 1000 volts minimum.

b. Response time of 10 nanoseconds or less.

c. Transverse mode noise attenuation of 65 dB or greater.

d. Common mode noise attenuation of 150 dB or greater at 40 to 100 Hz.

2.8 LOCAL AREA NETWORK (LAN)

A. Provide communication between control units over local area network (LAN).

B. LAN Capacity: Not less than 60 stations or nodes.

C. Break in Communication Path: Alarm and automatically initiate LAN reconfiguration.

D. LAN Data Speed: Minimum 19.2 Kb.

E. Communication Techniques: Allow interface into network by multiple operation stations and by auto-answer/auto-dial modems. Support communication over telephone lines utilizing modems.

F. Transmission Median: Fiber optic or single pair of solid 24 gauge twisted, shielded copper cable.

G. Network Support: Time for global point to be received by any station, shall be less than 3 seconds. Provide automatic reconfiguration if any station is added or lost. If transmission cable is cut, reconfigure two sections with no disruption to system's operation, without operator intervention.

2.9 SYSTEM SOFTWARE

A. Operating System:

1. Concurrent, multi-tasking capability.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

a. Common Software Applications Supported: Microsoft Excel and Word.

2. System Graphics:

a. Allow up to 10 graphic screens, simultaneously displayed for comparison and monitoring of system status.

b. Animation displayed by shifting image files based on object status.

c. Provide method for operator with password to perform the following:

1) Move between, change size, and change location of graphic displays.

2) Modify on-line.

3) Add, delete, or change dynamic objects consisting of:

(a) Analog and binary values.

(b) Dynamic text.

(c) Static text.

(d) Animation files.

3. Custom Graphics Generation Package:

a. Create, modify, and save graphic files and visio format graphics in PCX formats.

b. HTML graphics to support web browser compatible formats.

c. Capture or convert graphics from AutoCAD.

4. Standard HVAC Graphics Library:

a. HVAC Equipment:

1) Air Handlers.

b. Ancillary Equipment:

1) Fans.

2) Hoods

3) Pumps.

4) Coils.

5) Valves.

6) Piping.

7) Dampers.

8) Ductwork.

c. File Format Compatible with Graphics Generation Package Program.

B. Project Graphics: Provide a minimum of the following:

1. Overall campus view with links to individual buildings.

2. Overall building with links to individual floors, wings or areas of the building.

3. Overall floor plan screens showing current zone temperatures, CO2, or humidity as applicable. Provide links to each zone.

4. Screens for zone level equipment (e.g. Unit Ventilators, VAV zones, Terminal Units, In-floor heating zones, etc.) Display all relevant points, setpoints and settings.

5. Screens for major equipment (e.g. Air Handling Units, boilers plant, chiller plant, snowmelt, geo-thermal system, rooftop units, etc.).

6. For any equipment or zone screens that may be too complicated or cluttered to display all relevant points, setpoints and settings, provide a simplified screen displaying the more important or requested points and a second screen displaying the less used or more detailed settings. Provide links between each screen.

7. Alarm summary and acknowledgment screen.

8. Trend access and builder screen.

9. Any additional screens needed for points and systems not listed.

C. Server System Applications:

1. Automatic System Database Save and Restore Functions:

a. Current database copy of each Building Controller is automatically stored on hard disk.

b. Automatic update occurs upon change in any system panel.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

c. In the event of database loss in any system panel, the server will automatically restores the database for that panel unless disabled by the operator.

2. Manual System Database Save and Restore Functions by Operator with Password Clearance:

a. Save database from any system panel.

b. Clear a panel database.

c. Initiate a download of a specified database to any system panel.

3. Software provided allows system configuration and future changes or additions by operators under proper password protection.

4. On-line Help:

a. Context-sensitive system assists operator in operation and editing.

b. Available for all applications.

c. Relevant screen data provided for particular screen display.

d. Additional help available via hypertext.

5. Security:

a. Operator log-on requires user name and password to view, edit, add, or delete data.

b. System security selectable for each operator.

c. System supervisor sets passwords and security levels for all other operators.

d. Operator passwords to restrict functions accessible to viewing and/or changing system applications, editor, and object.

e. Automatic, operator log-off results from keyboard or mouse inactivity during user-adjustable, time period.

f. All system security data stored in encrypted format.

6. System Diagnostics:

a. Operations Automatically Monitored:

1) Workstations.

2) Printers.

3) Modems.

4) Network connections.

5) Building management panels.

6) Controllers.

b. Device failure is annunciated to the operator.

7. Alarm Processing:

a. All system objects are configurable to "alarm in" and "alarm out" of normal state.

b. Configurable Objects:

1) Alarm limits.

2) Alarm limit differentials.

3) States.

4) Reactions for each object.

8. Alarm Messages:

a. Descriptor: English language.

b. Recognizable Features:

1) Source.

2) Location.

3) Nature.

9. Configurable Alarm Reactions by Workstation and Time of Day:

a. Logging.

b. Printing.

c. Starting programs.

d. Displaying messages.

e. Dialing out to remote locations.

f. Paging.

g. Providing audible annunciation.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

h. Displaying specific system graphics.

10. Custom Trend Logs:

a. Definable for any data object in the system including interval, start time, and stop time.

b. Trend Data:

1) Sampled and stored on the building controller panel.

2) Archivable on hard disk.

3) Retrievable for use in reports, spreadsheets and standard database programs.

4) Archival on LAN accessible storage media including hard disk, tape, Raid array drive, and virtual cloud environment.

5) Protected and encrypted format to prevent manipulation, or editing of historical data and event logs.

c. The following is a minimum list of trends required to be logged:

1) Air Handling Systems

(a) Discharge Air Temperature and Setpoint

(b) Space Temperature and Setpoint

(c) Airflow and Setpoint

(d) Outdoor Air Airflow

2) Space Conditions

(a) Space Temperature and Setpoint

(b) Space Supply Air Temperature

11. Alarm and Event Log:

a. View all system alarms and change of states from any system location.

b. Events listed chronologically.

c. Operator with proper security acknowledges and clears alarms.

d. Alarms not cleared by operator are archived to the server hard disk.

12. Object, Property Status and Control:

a. Provide a method to view, edit if applicable, the status of any object and property in the system.

b. Status Available by the Following Methods:

1) Menu.

2) Graphics.

3) Custom Programs.

13. Reports and Logs:

a. Reporting Package:

1) Allows operator to select, modify, or create reports.

2) Definable as to data content, format, interval, and date.

3) Archivable to hard disk.

b. Real-time logs available by type or status such as alarm, lockout, normal, etc.

c. Stored on hard disk and readily accessible by standard software applications, including spreadsheets and word processing.

d. Set to be printed on operator command or specific time(s).

14. Reports:

a. Standard:

1) Objects with current values.

2) Current alarms not locked out.

3) Disabled and overridden objects, points and SNVTs.

4) Objects in manual or automatic alarm lockout.

5) Objects in alarm lockout currently in alarm.

6) Logs:

(a) Alarm History.

(b) System messages.

(c) System events.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

(d) Trends.

b. Custom:

1) Daily.

2) Weekly.

3) Monthly.

4) Annual.

5) Time and date stamped.

6) Title.

7) Facility name.

c. Tenant Override:

1) Monthly report showing total, requested, after-hours HVAC and lighting services on a daily basis for each tenant.

2) Annual report showing override usage on a monthly basis.

d. Weather:

1) Weather:

(a) Monthly showing minimum, maximum, average outdoor air temperature and heating/cooling degree-days for the month.

D. Server Applications Editors:

1. Provide editing software for each system application on server via web interface.

2.10 CONTROLLER SOFTWARE

A. All applications reside and operate in the system controllers and editing of all applications occurs via web interface.

B. System Security:

1. User access secured via user passwords and user names.

2. Passwords restrict user to the objects, applications, and system functions as assigned by the system manager.

3. User Log On/Log Off attempts are recorded.

4. Automatic Log Off occurs following the last keystroke after a user defined delay time.

C. Object or Object Group Scheduling:

1. Weekly Schedules Based on Separate, Daily Schedules:

a. Include start, stop, optimal stop, and night economizer.

b. 10 events maximum per schedule.

c. Start/stop times adjustable for each group object.

2. Exception Schedules:

a. Based on any day of the year.

b. Defined up to one year in advance.

c. Automatically discarded and replaced with standard schedule for that day of the week upon execution.

3. Holiday or Special Schedules:

a. Capability to define up to 99 schedules.

b. Repeated annually.

c. Length of each period is operator defined.

D. Provide standard application for equipment coordination and grouping based on function and location to be used for scheduling and other applications.

E. Alarms:

1. Binary object is set to alarm based on the operator specified state.

2. Analog object to have high/low alarm limits.

3. All alarming is capable of being automatically and manually disabled.

4. Alarms shall be directed to appropriate personnel by access level and alarm routing requirements. Send e-mail and/or text to designated personnel based on alarm class level.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

5. Alarms shall be categorized by class.

a. Class 1:

1) Associated with fire, security and other critical equipment failure monitoring functions.

2) Unacknowledged alarms to be placed in unacknowledged alarm buffer.

3) All conditions shall cause an audible sound on graphic screens and shall require individual acknowledgment to silence audible sound.

b. Class 2:

1) Critical, but not life-safety related and processed same as Class 1 alarms, except do not require individual acknowledgment.

2) Acknowledgment may be through a multiple alarm acknowledgment.

c. Class 3:

1) General alarms: displayed on graphic screens and placed in unacknowledged alarm buffer.

2) Each new alarm received shall cause an audible sound. Audible sound shall be silenced by acknowledging alarm.

3) Acknowledgement of alarms shall be either on an individual basis or through a multiple alarm acknowledgement.

4) Alarms returning to normal condition shall not cause an audible sound or require acknowledgment.

d. Class 4:

1) Routine maintenance or other types of warning alarms.

2) Alarms to be displayed on graphic screens only, no audible sound and no acknowledgment required.

6. Alarm Reporting:

a. Operator determines action to be taken for alarm event.

b. Reporting Options:

1) Start programs.

2) Print.

3) Log of all alarms; return to normal conditions and alarm acknowledgments including a time stamp for each action.

4) Custom messaging.

5) Graphical displays.

F. Maintenance Management: System monitors equipment status and generates maintenance messages based upon user-designated run-time limits.

G. Sequencing: Application software based upon specified sequences of operation in Section 23 09 93.

H. PID Control Characteristics:

1. Direct or reverse action.

2. Anti-windup.

3. Calculated, time-varying, analog value, positions an output or stages a series of outputs.

4. User selectable controlled variable, set-point, and PED gains.

I. Staggered Start Application:

1. Prevents all controlled equipment from simultaneously restarting after power outage.

2. Order of equipment startup is user selectable.

J. Energy Calculations:

1. Accumulated instantaneous power or flow rates are converted to energy use data.

2. Algorithm calculates a rolling average and allows window of time to be user specified in minute intervals.

3. Algorithm calculates a fixed window average with a digital input signal from a utility meter defining the start of the window period that in turn synchronizes the fixed-window average with that used by the power company.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

K. Anti-Short Cycling:

1. All binary output objects protected from short-cycling.

2. Allows minimum on-time and off-time to be selected.

L. On-Off Control with Differential:

1. Algorithm allows binary output to be cycled based on a controlled variable and set-point.

2. Algorithm to be direct-acting or reverse-acting incorporating an adjustable differential.

M. Run-Time Totalization:

1. Totalize run-times for all binary input objects.

2. Provides operator with capability to assign high run-time alarm.

PART 3 EXECUTION

3.1 INSTALLERS

A. Installer List:

Control Logic of Michigan

1. Control Solutions Inc.

ControlNET LLC Grand Valley Automation.

Trane Corporate Office

3.2 EXAMINATION

A. Verify existing conditions before starting work.

B. Verify that conditioned power supply is available to the control units and to the operator work station. Verify that field end devices, wiring, and pneumatic tubing is installed prior to installation proceeding.

3.3 SYSTEM EQUIPMENT CONTROL

A. Equipment to be controlled shall include a minimum of the following:

1. Hot water heating system and pumps

2. Air handling systems and equipment

3. Air-handling units

4. Exhaust Fans

3.4 SYSTEM INTERFACE WITH EXISTING SYSTEMS

A. Integration with Existing Proprietary Control Systems:

1. Engage Owner's control system provider to expand existing system to incorporate new control systems and components into existing proprietary control system including all new graphics, logs, reports, trends, points, controllers and sequences.

2. Engage Owner's control system provider to include commissioning of existing and new control systems and components.

3. Control System Provider Information:

a. Company:Control Solutions Inc.

b. Address:5805 Weller Ct SW, STE A, Wyoming, MI 49509

c. Contact:Rick Ostrowski

d. Phone Number:616.247.9422

e. E-mail Address:Service@csibas.com

3.5 GENERAL INSTALLATION

A. Install control units and other hardware in position on permanent walls where not subject to excessive vibration.

B. Install software in control units and in operator work station. Implement all features of programs to specified requirements and appropriate to sequence of operation. Refer to Section 23 09 93.

C. Provide conduit and electrical wiring in accordance with Section 26 05 83. Electrical material and installation shall be in accordance with appropriate requirements of Division 26.

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

3.6 CONTROL DEVICES TO BE INSTALLED BY OTHERS

A. Deliver the following control devices in accordance with the construction schedule to the

Mechanical Contractor for installation in the ductwork and piping:

1. Control dampers

2. Airflow measuring stations

3. Control Valves

3.7 CONTROL DEVICES FOR FACTORY INSTALLATION

A. Deliver the following control devices in accordance with the equipment production schedule to the Equipment Manufacturer for installation at the factory:

1. Air Handling Units:

a. Programmable controller

b. Control dampers and actuators

c. Airflow sensors/switches

d. Pressure sensors/switches

e. Temperature sensors

f. Relays

3.8 CONTROLLER INSTALLATION

A. Install controllers in enclosures.

B. Power controllers via field power and UPS system.

C. Install all controller with the up to date version of the operating and provide owner with a copy of all installed software.

D. Commission all controllers in accordance with operating sequences listed in 23 09 93.

3.9 NETWORK NAMING AND NUMBERING

A. Coordinate with Owner naming and numbering for networks and devices.

B. Comply with requirements for ASHRAE Std 135 networks.

C. Naming:

1. Each device shall be assigned a Device Instance Number (unique within the BACnet network).

2. Objects within devices (e.g. sensors, actuators) shall be identified by their type and instance.

3. Use a structured naming convention that includes building, floor, and area.

4. Include a description of the device's function for clarity.

5. Group related devices logically to enhance identification and management.

6. Example Format: B{Building Number}-F{Floor Number}-Z{Zone Number}-D{Device Type}-

N{Device Instance}.

D. Numbering:

1. Use a consistent numbering scheme for instances to ensure uniqueness and ease of identification.

2. Reflect the physical or logical layout of the system in the numbering.

3. Similar devices can share a numbering system to indicate their function or location.

3.10 MANUFACTURER'S FIELD SERVICES

A. Start and commission systems. Allow sufficient time for start-up and commissioning prior to placing control systems in permanent operation.

B. Provide service engineer to instruct Owner's representative in operation of systems plant and equipment for 3 day period.

C. Training:

A/E PROJECT 5-6730

Copyright GMB 2025 SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

1. Provide basic operator training for five persons on data display, alarm and status descriptors, requesting data, execution of commands and request of logs. Include a minimum of 40 hours dedicated instructor time over a five day period in two separate weeks. Provide training on site.

2. Coordinate training schedule and content with Owner a minimum of two week prior to desired training.

3. Training instructors must have a minimum of five years experience in training and a minimum of five years experience with similar projects/scope.

4. Provide Owner with a hard copy of all training materials organized in a three ring binder with dividers and table of contents along with a digital copy.

5. Provide Owner with two copies of the digital video and audio recording of each training session.

6. Owner retains the right to make additional copies of all training materials.

3.11 DEMONSTRATION AND INSTRUCTIONS

A. Demonstrate complete and operating system to Owner.

END OF SECTION