SECTION: 23 09 00 DIRECT DIGITAL CONTROL FOR HVAC AND OTHER BUILDING CONTROL SYSTEMS
 
Criteria

1. Quality Assurance: EP 415-1-261, Volume 1 & EP 415-1-261, Volume 4
2. UFGS SECTION 23 09 00 Instrumentation and Control for HVAC
3. UFGS 23 09 23.02 BACnet Direct Digital Control For HVAC and Other Building Systems
4. UFC 3-410-02 Direct Digital Control for HVAC and Other Local Building Systems
5. UFC 3-410-06 Cybersecurity of Facility-Related Control Systems (FRCS)
6. UFGS 25 05 11 Cybersecurity for Facility-Related Control Systems
7. UFGS 23 52 00 Heating Boilers
8. UFGS 23 64 10 Water Chillers, Vapor Compression Type
9. UFGS 23 74 33 Dedicated Outdoor Air Systems (DOAS)
10. UFGS 23 81 23 Computer Room Air Conditioning Units
11. High Performance and Sustainable Buildings Guidance
12. UFC 1-200-02 HIGH PERFORMANCE AND SUSTAINABLE BUILDING REQUIREMENTS
13. ASA IE&E Sustainable Design and Development Policy (Dec 16 2013)
14. JBLM Regulation 420-1 (2020) JBLM FACILITY ENERGY MANAGEMENT PROGRAM
15. AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL (AMCA)
16. Appendix A -  Commissioning Schedule Requirements-JBLM 
17. Appendix B -  N4 Graphics
18. Appendix C - Alarm Point Matrix

 
Design Requirements
a. JBLM UMCS campus consists of JACE's running BACnet MS/TP. 
b. JBLM currently uses Tridium Niagara version 4.13 with JACE 9000.
c. Once project is complete the JACE needs to be integrated into the N4 server at building 2012, including logged histories and alarms.
d. Project must follow Commissioning Schedule Requirements-JBLM. Please reference Appendix A listed above.
e. Sequence of Operation must be incorporated into the equipment graphics page and a graphics page listing all equipment sequences. Please reference Appendex B listed above.
f. JACE programming should only use native Niagara software with JBLM specific modules. 
g. All graphics pages on a station shall include: building location (i.e. JBLM Lewis Main, Lewis North, or McChord Field)  building function (i.e. COF, Motor Pool, Child Development Center), version of Niagara and controller software. Each graphics page on a station must have a title (i.e. Equipment, AHU-1, HW System, FCU-6) and what the equipment serves. Please reference Appendex B listed above.
h. Include interface card for monitoring the status, operation, alarms and temperatures (all points available) through the building's DDC system from the packaged controls for all boilers/chillers (reference UFGS 23 52 00 section 2.2 and 2.4.6 for boilers and UFGS 23 64 10 section 2.6.4.6 for chillers), i.e. BACnet/Modbus interface cards.
i. Include interface card for monitoring the status, operation, alarms and temperatures (all points available) through the building's DDC system from the packaged controls for all DOAS systems (reference UFGS 23 74 33 section 2.10.3).
j. Include interface card for monitoring the status, operation, alarms and temperatures (all points available) through the building's DDC system from the packaged controls for all CRAC systems (reference UFGS 23 81 23 section 2.5.3).
k. Wireless and Bluetooth devices for HVAC components should be avoided. (reference UFC 4-010-06). 
l. The JACE and hydronic loop boiler/chiller DDC controls for mission buildings need to be on emergency lighting backup power.
m. Projects for mission buildings need to include local display panel (LDP) as part of the DDC hardware with a display and navigation buttions or a touch screen display interface in a locked mechanical room controls panel (reference UFGS 23 09 23.02 section 2.3.3).
n. Reference Appendix C on how to configure DDC alarm priorities and software points.
o. Install the controllers near their respective controlled equipment. The control system consists of standalone controllers, with the total number of input and output points limited to 48 or less per controller. Failure of any single controller will not cause the loss of more than 48 control points. 
p. A hand-held terminal is a manufacturer specfic device connected directly to a communications port on a controller, through which the controller is accessed and, in some cases, programmed. This is only allowed as a troubleshooting tool when the JACE for that system is no longer functional. 
q. A JACE I/O module is not standalone because the control program does not reside in the I/O unit, it resides on the JACE and is considered a single point of failure. The JACE shall not be used to control major HVAC equipment or systems and in the event of a JACE failure, DDC system should default to occupied mode of operation. An I/O expander which connects directly to a standalone controller through a multi-line microprocessor bus is considered part of the standalone controller. The total point count of the I/O and all connected expansion units shall not exceed the 48 point limit. 
r. All Terminal Control Units (TCU) shall be remotely configurable via the JBLM EMCS server. 
s.1 The building's Temperature Control System (TCS) shall be capable of being extended to the JBLM Niagara framework Environmental Management and Control System (EMCS), and comprised of a network of interoperable, standalone digital controllers communicating via BACnet MS/TP to a JACE (Network NAC). The JACE to be connected to the EMCS/DDC controller through the NEC switch, NEC switch is not within the scope of the contract. Cat-6 wiring to switch to be provided by contractor. Access to the system shall be accomplished through the JBLM EMCS server. 
s.2 The TCS shall be comprised of a network of interoperable, standalone digital controllers communicating to a host computer within one facility within the project using graphical user interface software. The EMCS shall communicate to third party systems such as chillers, boilers, air handling systems, energy management systems, and other building management related devices with open, interoperable communication capabilities.
s.3 Provide a TCS including associated equipment and accessories as specified. Manufacturer's products, including design, materials, fabrication, assembly, erection, examination, inspection, and testing shall be in accordance with ASME B31.1 and NFPA 70, except as modified herein or indicated otherwise. Routers and/or gateways between the JACE NAC to the JBLM N4 VLAN shall not be utilized due to security restrictions. 
s.4 The TCS systems shall maintain stable temperature control and all other conditions as indicated. The end-to-end accuracy of the system, including temperature sensor error, wiring error, A/D conversion, and display, shall be plus or minus 0.5 degrees. 
t. Provide controls system schematic that includes the following: 
-Location of each input and output device.
-Flow diagram of each HVAC component, for instance flow through coils, fans, dampers.
-Name or symbol for each component-by-component name such as V-1, DM-2, and T-1 for a valve, damper motor, and temperature sensor, respectively.
-Setpoints, sensor range, actuator range, valve and damper schedules and normal position, switch points on input switches, written sequence of operation for each control system schematic.
-Schedules identifying each sensor and controlled device with the LAN and software point name with send and receive address if applicable, point type (AO, AI, DO, DI), point range, and the digital controller number for each point.
u. Systems requiring proprietary database and user interface programs shall not be acceptable. All controllers shall be fully programmable and/or configurable from the JBLM EMCS server using a Niagara Workbench application and/or a web supervisor. Configurable controls are only acceptable in application specific topology i.e., VAV controllers part of a distributed control network connected to a higher level controller such as an Air Handling Unit controller. 
v. System printouts and calculations shall be performed in US customary units (inch-pound) . Graphic User Interface (GUI) system displays shall be in US customary units (inch-pound). Parameter modifications made through the GUI shall be displayed and accomplished in US customary units. Calculations shall have accuracy equal to or exceeding sensor accuracy. Displays and printouts shall have precision and resolution equal to or exceeding sensor accuracy. 
w. Nameplates and tags bearing device unique identifiers shall be engraved or stamped. Permanently attach nameplates to HVAC control panel doors and back plates. For each field mounted piece of equipment attach a plastic or metal tag with equipment name and point identifier. 
x. The contractor or subcontractor(s) performing the work shall have completed at least five DDC system installations of a similar design and complexity and have successfully completed at least five Tridium integrations using BACnet controllers and systems with the use of Niagara workbench programming software running on the Niagara platform. Contractor shall be a certified and/or authorized Tridium controls integrator.
y. An electronic (.pdf) version of the HVAC Control System Performance Verification Test Procedures, in booklet form and indexed, 60 days before the contractor's scheduled test dates. The performance verification test procedures shall refer to the devices by their unique identifiers as shown, shall explain, step-by-step, the actions and expected results that will demonstrate that the HVAC control system performs in accordance with the sequences of operation, the requirements of paragraph "Field Quality Control Tests", contractor point-to-point tests and other contract documents. An HVAC control system performance verification test equipment list shall be included that lists the equipment to be used during performance verification testing. The list shall include manufacturer name, model number, equipment function, the date of the latest calibration, and the results of the latest calibration. 
z. The commissioning procedures shall be specific for each HVAC system and shall give detailed step-by-step procedures for commissioning of the system per paragraph (y.) about "Field Quality Control Tests". Contractor shall provide at least 2 weeks advance notice to the contracting office for the government representative to be present at commissioning. 
aa. Testing will include the field tests, point-to-point tests and the performance verification tests (PVT). Field tests shall demonstrate proper calibration of input and output devices, and the operation of all equipment. Government witnessed PVT shall ensure proper execution of the sequence of operation and proper tuning of control loops, as well as system communication. Contractor shall not start testing without written government approval of field test plan and PVT plan. 100 percent of controls and sequences shall be tested during PVT, no partial or modified PVT. Testing and balancing (TAB) shall be complete prior to commencing PVT. Provide at least 14 days advance notice to the contracting officer in order for a Directorate of Public Works (DPW) Business Operation and Integration Division (BOID) DDC representative to be present to witness the PVT. 
bb. Provide an operator programmable system to perform closed-loop, modulating control of building equipment. Graphic-based software shall provide graphical representation of the building, the building's mechanical systems, and the DDC system. Connect all digital controllers through the communication network to share common data with the JBLM EMCS server capable of programming and monitoring the digital controllers. The control system shall be capable of downloading programs between the JBLM EMCS server and digital controllers. At project completion the station shall be integrated into the JBLM N4 server and a station backup shall be copied to the server at building 2012.
cc. Provide input and output type(s) as required by the DDC design, each controller should have at least 10 percent spare inputs and 10 percent spare outputs. 
dd. The upper-level digital controllers shall be Tridium JACE controllers capable of networking with the existing JBLM EMCS server. Upper-level controllers shall also be capable of communicating over JBLM EMCS network between buildings. The JACE controller is to be connected to the EMCS through the NEC switch. NEC switch is not within the scope of the contract. Cat-6 wiring to switch to be provided by contractor. 
ee. All integration and programming shall be via the Niagara Framework network engineering software tools, Niagara Workbench. The units for graphic display, parameter modification and maintenance interface shall be US customary units, even if the project is a metric design.
ff. Provide an adjustable delay between when a motor is commanded on or off and when the control program looks to the motor or flow status input for confirmation of successful command execution. Provide user definable adjustable run time for each push of a momentary contact timed local override. Pushes shall be cumulative with each push designating the same length of time. Provide a user definable limit on the number of contact closures summed, such as 6, before the contact closures are ignored. Timed local overrides are disabled during occupancy periods. 
gg. DDC system shall have the capability to trend all I/O and virtual points. Points may be associated into groups. A trend report may be set up for each group. The period between logging consecutive trend values shall range from 1 minute to 15 minutes at a minimum. 
hh. Input hardware/devices are not to be integral with digital controllers.
ii. Room temperature sensors connected directly to application specific controllers shall have integral occupancy schedule override and set point adjustment that is limited through software programming. Provide override DDC time of day program and activate occupancy program for assigned units. Upon expiration of override time, the control system shall return to time-of-day program. Time interval for the length of operation shall be software adjustable and shall expire unless reset. Room temperature sensors to be installed on interior walls to sense average room temperature conditions. Avoid locations near heat sources or which may be covered by office furniture. Room temperature sensors shall not be mounted on exterior walls when other locations are available. Mount center of sensor at 5 feet above finished floor. No digital displays on DDC wall space/temperaure sensors.
jj.Outside air temperature sensors shall be installed on the building's north side (under eve if applicable), away from exhaust hoods, air intakes and other areas that may affect temperature readings, with appropriate sunshade that will minimize solar effects. Sunshade shall not inhibit the flow of ambient air across the sensing element. Shade shall protect the sensing element from snow, ice, and rain. 
kk. Provide temperature sensors in locations to sense the appropriate condition. Provide sensor where they are easy to access and service without special tools. Calibrate sensors to accuracy specified. In no case will sensors designed for one application be installed for another application. 
ll. Provide DDC current transmitters to monitor amperage of all HVAC motors being controlled/monitored by the DDC system unless motor status for that equipment is being provided through a BACnet interface.
mm. Duct smoke detectors are only monitored by the DDC system through its alarm input contacts and shall shut down the unit via hardwire shutdown and be automatically reset when the alarm condition clears at the air handling unit. 
nn. Do not divide control of a single mechanical system such as an air handling unit, boiler, chiller, or terminal equipment between two or more controllers. A single controller shall manage control functions for a single mechanical system. It is permissible, however, to manage more than one mechanical system with a single controller. 
 
 
 
 
Notes to Designers on Drawing Content
a. A laminated copy of each controller wiring schematic must be mounted on the inside door of the controller cabinet.
b. 11 x 17  laminated copy of DDC System Shop drawings must be hung from the JACE panel enclosure. 
 
Standard Details
a. All DDC components must be labeled.
b. All controller cabinets shall be lockable.
c. After Performance Verification and Testing (PVT) is complete, trends must be collected for 7 days. Trends must be saved in PDF format. 
 
 
 
Applicable Points of Contact
Design Standards