23 09 23 Direct-Digital Control System for HVAC ADD 2.pdf

Construction Documents Set November 10, 2022

OREGON DEPARTMENT OF FORESTRY SECTION 23 09 23

TILLAMOOK FOREST CENTER DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

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PART 1 - GENERAL

1.01 RELATED SECTIONS

A. Section 01 91 13 - General Commissioning Requirements

B. Section 20 20 00 - Mechanical Operation and Maintenance Manuals

C. Section 20 50 10 - Mechanical Systems Commissioning

D. Section 20 52 00 - Variable Frequency Drives

E. Section 20 60 00 - Mechanical Identification

F. Section 20 91 00 - Testing, Adjusting, and Balancing

G. Section 23 09 93 - Controls Sequence of Operations

H. Section 23 52 00 - Boilers

I. Products and Execution defined in this Section shall be commissioned. Refer to Sections 20 05 10 and 01 91 13 for scope of work and responsibilities related to commissioning.

1.02 WORK INCLUDED

A. Building Automation System (BAS) Contractor shall provide and install supplemental controls to integrate products provided in the Contract into Owner’s integrated Building Automation System (BAS), being installed in another Contract, incorporating direct digital control (DDC) for energy management, equipment monitoring and control, and subsystems with open communications capabilities as herein specified.

B. Provide engineering, installation, calibration, software, software programming, and checkout for complete and fully operational BAS. The following shall be included:

1. Electronic controls for items indicated on Drawings and described hereinafter including sensors, switches, relays, transformers, thermostats, and temperature sensors.

2. Install interconnecting cables between supplied cabinets, application controllers, and input/output devices, except existing cabling to remain, where indicated. Network cabling is to be replaced to the new controllers. Network (twisted pair) to sensors mounted on equipment, i.e., Air Temperature (SAT, MAT, RAT) sensors and digital input devices such as current sensors that monitor motor status (on/off), or a digi tal output (start/stop) or an analog output (2-10 vdc) for individual actuators can remain. Provide cabling to new system sensors as needed per the Bid Drawings and Specifications and equipment manufacturer’s installation instructions.

3. Provide complete manufacturer’s specifications for items that are supplied. Include vendor name of every item supplied.

4. Provide supervisory specialists and technicians at the job site to assist in each phase of system installation, startup, and commissioning.

5. New sensors, dampers, valves, and install only new electronic actuators. No used components shall be used as any part or piece of installed system.

6. Adjustment and validation of control system. System testing. System demonstration to Mechanical Engineer and Owner's Representative.

7. No gateways shall be used for communication to controllers installed under this section , except gateways may be used for communication where indicated and for communication to new and existing HVAC equipment with “packaged” onboard controls.

1.03 WORK BY OTHERS:

A. Installation of wells, valves, taps, dampers, flow switches, flow stations, etc. furnished by BAS manufacturer.

B. Provided under Division 26:

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1. Wiring of power feeds to disconnects where starters or VFD’s are furnished as an integral part of equipment.

2. Wiring between disconnects and starters to electrical motors and variable speed drives where starters or drives are not an integral part of equipment.

3. Wiring of remote emergency shut-down switches not furnished by BAS manufacturer.

1.04 SYSTEM DESCRIPTION

A. Building Automation System (BAS) provided by Owner is a high-speed, peer-to-peer network of DDC controllers and a web- based operator interface. Herein coordinate with Owner’s BAS provider and providers of equipment and pumps to connect to BAS for remote enable/disable and monitoring/alarming of boiler/pump systems.

B. Provide BACnet/MODBUS protocol converter and associated wiring and accessories to establish monitoring/alarm feedback from boiler system to Owner’s BAS.

1.05 QUALITY ASSURANCE

A. The BAS system shall be designed and installed, commissioned and serviced by manufacturer factory trained personnel employed manufacturer or manufacturer representative. Manufacturer shall have an in-place support facility within 2 hours response time of the Tillamook Forest Center site with technical staff, spare parts inventory and necessary test and diagnostic equipment.

B. Materials and equipment shall be the catalogued products of manufacturers regularly engaged in production and installation of automatic temperature control systems and shall be manufacturer's latest standard design that complies with the specification requirements.

C. Electronic equipment shall conform to the requirements of FCC Regulation, Part 15, Governing Radio Frequency Electromagnetic Interference and be so labeled.

1.06 REFERENCE STANDARDS

A. The latest edition of the following standards and codes in effect and amended as of supplier's proposal date, and any applicable subsections thereof, shall govern design and selection of equipment and material supplied:

1. American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE).

2. ANSI/ASHRAE Standard 135-2004, BACnet.

3. Uniform Building Code (UBC), including local amendments.

4. UL 916 Underwriters Laboratories Standard for Energy Management Equipment. Canada and the

US.

5. National Electrical Code (NEC).

6. FCC Part 15, Subpart J, Class A

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

8. UL-864 UUKL listing for Smoke Controls for any equipment used in smoke control sequences

B. City, county, state, and federal regulations and codes in effect as of contract date.

C. Except as otherwise indicated the system supplier shall secure and pay for permits, inspections, and certifications required for his work and arrange for necessary approvals by the governing authorities.

1.07 SHOP DRAWINGS, PRODUCT DATA, OPERATION & MAINTENANCE DATA

A. Submittals required for the products listed in the Product Table, in accordance with Section 01 60 00.

Operation & Maintenance Information required as indicated in the Product Table in accordance with Section 20 20 00.

B. Drawings:

1. The system supplier shall submit engineered drawings, control sequence, and bill of materials for approval, as indicated in Product Table included herein.

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2. Drawings shall be submitted in the following standard sizes: 8.5”x11” and 11” x 17”.

3. Drawings shall be made available on DVD or CD-ROM.

C. Operation & Maintenance Information requirements indicated by number designation as follows.

Refer to Section 20 20 00 for a description of each type of information.

1. Shop Drawings (submittal data)

2. Product Data (submittal data)

3. Manufacturer's Operation Manuals

4. Manufacturer’s Service and Lubrication Requirements

5. Service Contracts and Field Start-up Reports

6. Cleaning, Certification, and Test Reports

7. System Information

8. Warranties

PRODUCT TABLE

Operation & Maintenance Information

1 2 3 4 5 6 7 8

Index sheet, listing contents in alphabetical order X Valve schedules X X Equipment data cut sheets for equipment to be furnished as part of this project

X X X

Point List X System Schematics, including: Sequence of operations, point names and addresses, Wiring diagrams, Panel layouts, and System riser diagrams

X X

Logic flow diagrams for digital control sequences X

Acceptance test procedure list X X Manufacturer’s equipment parts list of functional components of system, and data sheets for equipment furnished.

X

AutoCAD disk and hard copy of system schematics, including wiring diagrams.

X

Description of sequence of operations X

Auto-CAD compatible as-installed drawings. X

As-installed logic flow diagrams for digital control sequences. X

As-installed interconnection wiring diagrams X

Operator’s Manual X Trunk cable schematic showing remote electronic panel locations, and trunk data.

X

List of connected data points, including panels to which they are connected and input device (detector, thermostat, etc.)

X

Software programming literature. X

Conduit routing diagrams X

D. Project Management:

1. The vendor shall provide a detailed project design and installation schedule with time markings and details for hardware items and software development phases. Schedule shall show all the target dates for transmission of project information and documents and shall indicate timing and dates for system installation, debugging, and commissioning.

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1.08 WARRANTY

A. Warranty shall cover costs for parts, labor, software updates, associated travel, and expenses for a period of three years from completion of system acceptance.

B. Hardware and software personnel supporting this warranty agreement shall provide on-site or off-site service in a timely manner after failure notification to the vendor. Factory authorized warranty service shall be confirmed with in thirty (30) minutes of Owner call and available on site within 4 hours of a call for service. The maximum acceptable response time to provide this service at the site shall be 4 hours Monday through Friday, 8 hours on Saturday and Sunday.

C. This warranty shall apply equally to both hardware and software.

D. Warrant labor and materials for specified control system free from defects for a period of 12 months after final acceptance. Failures on control systems that include all computer equipment, transmission equipment and all sensors and control devices during warranty period shall be adjusted, repaired, or replaced at no additional cost or reduction in service to Owner.

E. Work shall have a single warranty date, even if Owner receives beneficial use due to early system start-up. If specified work is split into multiple contracts or a multi-phase contract, each contract or phase shall have a separate warranty start date and period.

F. Provide updates to operator workstation software, project-specific software, graphic software, database software, and firmware that resolve Contractor identified software deficiencies at no charge during warranty period. If available, Owner can purchase in-warranty service agreement to receive upgrades for functional enhancements associated with the above-mentioned items. Do not install updates or upgrades without Owner’s authorization.

PART 2 - PRODUCTS

2.01 GENERAL

A. Use new products the manufacturer is currently manufacturing and selling for use in new installations.

Do not use this installation as a product test site unless explicitly approved in writing by Owner. Spare parts shall be available for at least five years after completion of this contract.

2.02 SENSORS

A. Water temperature sensor shall be liquid immersion type, stainless steel thermister, with resistance varying proportionally to temperature. Temperature range shall be suitable for application.

D. Outside Air Temperature Sensor:

1. Platinum RTD type sensor.

2. Assembly includes platinum RTD sensing element, transmitter and mounting enclosure.

3. Output Signal: 4-20 mA.

E. Air Static Pressure Sensor:

1. Duct static pressure range: -0.5” to +7.0” w.c.

2. Accuracy: +/-0.05” w.c.

3. Output signal: 4-20 mA.

F. Flow Switch (Water):

1. Size: For required pipe size.

2. Flow-proving switches shall be either paddle or differential pressure type, as shown.

3. Paddle type switches (water service only) shall be UL listed, SPDT snap-acting with pilot duty rating (125 VA minimum) and shall have adjustable sensitivity with NEMA 1 enclosure unless otherwise specified.

4. Differential pressure type switches (air or water service) shall be UL listed, SPDT snap-acting, pilot duty rated (125 VA minimum), NEMA 1 enclosure, with scale range and differential suitable

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5. Operation: Energize with system flow.

G. Differential Pressure Sensor (water):

1. Type: Differential pressure.

2. Range: 0 to 50 psi.

3. Sensing Accuracy: +/-0.25% of calibrated span.

4. Output Signal: 4-20 mA.

5. Power Input: 24 VAC.

6. Manufacturer: Veris, Rosemount, or approved. Similar to Veris PW2 series.

H. Aquastat:

1. Strap-on type thermostats shall be provided for low or high temperature limit service on hot water or steam condensate pipes. The thermostats shall be UL listed, with a liquid-filled bulb type sensing element and capillary tubing. The thermostat shall operate within the 20 deg. F to 120 deg. F, or 100 deg. F to 240 deg. F, setpoint range, with an adjustable 6 deg. F differential.

2. The low-limit thermostat shall be automatic reset, snap acting SPDT type with concealed set point adjustment.

I. High Limit Thermostats:

1. High limit thermostats shall be manual reset type set at 120 degrees F.

J. Low Limit Thermostats (Freezestat):

1. Electric individual safety low limit thermostats shall be vapor pressure type with 20 foot minimum element. Element shall respond to lowest temperature sensed by any one foot section.

2. Low limit shall have manual reset.

K. Current Transformers:

1. Current transformer switches shall be furnished for status purposes in air and water applications.

2. The current transformers shall be designed to be installed or removed without dismantling the primary bus or cables. The transformer shall be of a split core design. The core and windings shall be completely encased in a UL approved thermoplastic rated 94VA. No metal parts shall be exposed other than the terminals. The current transformers shall meet the following specifications:

a. Accuracy: 1% at 5.0 to 25.0 VA accuracy class with U.P.F. burden.

b. Provide a disconnect switch for each current transformer.

L. Air Differential Pressure Switch

1. Differential pressure switches shall be diaphragm type, with die-cast aluminum housing and adjustable set point. Switch rating shall be a minimum 5 amps at 120 VAC. Switches shall be SPDT and be used for fan status as specified in the point schedule. Switch pressure range shall be suited for application. (e.g. filter 0-2.0", fan status 0-5.0", etc.).

PART 3 - EXECUTION

3.01 CONTROL SYSTEM INSTALLATION (GENERAL)

A. Installation shall be by Control System Manufacturer, or as Authorized by Section 1.05A. Installation by Wholesalers, Franchised Dealers, or any firm whose principal business is not that of manufacturing and installing automatic temperature control systems shall not be acceptable.

B. Install products in accordance with manufacturer's instructions.

C. Provide miscellaneous devices, hardware, software, interconnections installation and programming required to ensure a complete operating system in accordance with the sequences of operation and point schedules.

D. Contractor shall collaborate with Owner directly, to determine and implement the following:

1. Implement the Owner’s preferences for naming conventions for points and equipment prior to providing Submittals and before entering data in system.

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E. Prepare and start logic control system under provisions of this section.

F. Provide Owner's Representative with spare parts list. Identify equipment critical to maintaining the integrity of the operating system.

3.02 EXAMINATION

A. The project plans shall be thoroughly examined for control device and equipment locations. Any discrepancies, conflicts, or omissions shall be reported to the architect/engineer for resolution before rough-in work is started.

B. The contractor shall inspect the site to verify that equipment may be installed as shown. Any discrepancies, conflicts, or omissions shall be reported to the engineer for resolution before rough-in work is started.

C. Prior to starting work, carefully inspect installed work of other trades and verify that such work is complete to the point where work of this Section may properly commence.

D. The contractor shall examine the drawings and specifications for other parts of the work. If head room or space conditions appear inadequate—or if any discrepancies occur between the plans and the contractor’s work and the plans and the work of others—the contractor shall report these discrepancies to the engineer and shall obtain written instructions for any changes necessary to accommodate the contractor’s work with the work of others.

E. Do not begin work until unsatisfactory conditions are resolved.

3.03 LOCATION AND INSTALLATION OF COMPONENTS

A. Locate and install components for easy accessibility; in general, mount 48 inches above floor with minimum 3'-0" clear access space in front of units. Obtain approval on locations from owner’s representative prior to installation. This includes, but is not limited to space temperature sensors, carbon dioxide sensors, etc.

B. Instruments, switches, transmitters, etc., shall be suitably wired and mounted to protect them from vibration, moisture and high or low temperatures.

C. Provide stainless steel or brass thermowells suitable for respective application and for installation under other sections—sized to suit pipe diameter without restricting flow.

3.04 ELECTRICAL AND WIRING

A. Provide interlock and control wiring. Wiring shall be installed neatly and professionally, in accordance with Specification Division 26 and national, state and local electrical codes.

B. Provide wiring as required by functions as specified and as recommended by equipment manufacturers, to serve specified control functions. Provide shielded low capacitance wire for communications trunks.

C. Control wiring shall not be installed in power circuit raceways. Magnetic starters and disconnect switches shall not be used as junction boxes. Provide auxiliary junction boxes as required. Coordinate location and arrangement of control equipment with the owner's representative prior to rough-in.

D. Provide auxiliary pilot duty relays on motor starters as required for control function:

1. Provide required interposing relays for motor starters and contactors.

2. Motor starters, pilot power transformers, and enclosures provided under Division 26. Coordinate

120 VAC or 24 VAC requirements with Division 26.

E. NEC Class 1 (line voltage) wiring shall be UL Listed in approved conduit according to NEC and Division 26 requirements.

F. Low-voltage wiring shall meet NEC Class 2 requirements. (Low-voltage power circuits shall be sub

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G. Where NEC Class 2 (current-limited) wires are in concealed and accessible locations, including ceiling return air plenums, approved cables not in conduit may be used provided that cables are UL Listed for the intended application. For example, cables used in ceiling plenums shall be UL Listed specifically for that purpose.

H. Provide power for control components from nearest electrical control panel or as indicated on the electrical drawings—coordinate with electrical contractor.

I. Control wiring in the mechanical, electrical, telephone and boiler rooms to be installed in raceways.

Other wiring to be installed neatly and inconspicuously per local code requirements. If local code allows, control wiring above accessible ceiling spaces may be run with plenum rated cable (without conduit).

J. Wiring in mechanical, electrical, or service rooms—or where subject to mechanical damage— shall be installed in conduit.

3.05 IDENTIFICATION

A. Provide nameplates for switches, starters, and control devices in accordance with Section 20 60 00.

B. Nameplate wording shall be consistent with device names used on shop drawings and in Contract Documents.

C. Point name and address shall be indicated at each end of control wire connections to DDC equipment.

D. Identifiers shall match record documents.

3.06 PROTECTION

A. The contractor shall protect work and material from damage by its employees and/or subcontractors and shall be liable for damage thus caused.

B. The contractor shall be responsible for its work and equipment until finally inspected, tested, and accepted.

3.07 COORDINATION

A. Site:

1. The project coordination between trades is the responsibility of the prime contractor who is the one tier higher contractual partner such as mechanical contractor, general contractor, construction manager, owner or owner’s representative as applicable.

2. The controls contractor shall follow prime contractor’s job schedule and coordinate project related activities through the prime contractor except otherwise agreed or in minor job site issues.

Reasonable judgment shall be applied.

3. Where the work will be installed in close proximity to, or will interfere with, work of other trades, the contractor shall assist in working out space conditions to make a satisfactory adjustment.

4. If the contractor deviates from the job schedule and installs work without coordinating with other trades, so as to cause interference with work of other trades, the contractor shall make the necessary changes to correct the condition without extra charge.

5. Coordinate and schedule work with other work in the same area, or with work that is dependent upon other work, to facilitate mutual progress.

C. Coordination with controls specified in other sections or divisions:

1. Other sections and/or divisions of this specification include controls and control devices that are to be part of or interfaced to the control system specified in this section. These controls shall be integrated into the system and coordinated by the contractor as follows:

a. All communication media and equipment shall be provided as specified in Part 2, “Communication” of this specification.

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b. Each supplier of controls product is responsible for the configuration, programming, startup, and testing of that product to meet the sequences of operation described in this section.

c. The Contractor shall coordinate and resolve any incompatibility issues that arise between the control products provided under this section and those provided under other sections or divisions of this specification.

d. The contractor is responsible for providing all controls described in the contract documents regardless of where within the contract documents these controls are described.

e. The contractor is responsible for the interface of control products provided by multiple suppliers regardless of where this interface is described within the contract documents.

3.08 GENERAL WORKMANSHIP

A. Install equipment, piping, and wiring/raceway parallel to building lines (i.e., horizontal, vertical, and parallel to walls) wherever possible.

B. Provide sufficient slack and flexible connections to allow for vibration of piping and equipment.

C. Install all equipment in readily accessible locations as defined by Chapter 1, Article 100, Part A of the National Electrical Code (NEC).

D. Verify integrity of all wiring to ensure continuity and freedom from shorts and grounds.

E. All equipment, installation, and wiring shall comply with acceptable industry specifications and standards for performance, reliability, and compatibility and be executed in strict adherence to local codes and standard practices.

3.09 EXISTING EQUIPMENT

A. Unless otherwise directed, the controls contractor is not responsible for the repairs or replacement of existing energy equipment and systems, valves, dampers, or actuators. Should the controls contractor find existing equipment that requires maintenance, the Engineer shall be notified immediately.

3.10 INSTALLATION OF SENSORS

A. General:

1. Install sensors in accordance with the manufacturer’s recommendations.

2. Mount sensors rigidly and adequately for the environment within which the sensor operates.

3. Room temperature sensors shall be installed on concealed junction boxes properly supported by the wall framing.

a. Mount space temperature sensors 48 inches above finished floor or adjacent to room light switch/sensor, where shown on Drawings.

4. All wires attached to sensors shall be air sealed in their raceways or in the wall to stop air transmitted from other areas affecting sensor readings.

5. Sensors used in mixing plenums and hot and cold decks shall be of the averaging type.

6. Low-limit sensors used in mixing plenums shall be installed in a serpentine manner horizontally across the full face of the coil.

7. All pipe-mounted temperature sensors shall be installed in wells. Install all liquid temperature sensors with heat-conducting fluid in thermal wells.

8. Install outdoor air temperature sensors on north wall, complete with sun shield at designated location.

B. Instrumentation Installed in Piping Systems:

1. Thermometers and temperature sensing elements installed in liquid systems shall be installed in thermowells.

2. Gauges in piping systems subject to pulsation shall have snubbers.

C. Temperature Limit Switches:

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1. A temperature limit switch (Low Temperature Detector) shall be provided to sense the temperature.

2. A sufficient number of temperature limit switches shall be installed to provide complete coverage of the duct section.

3. Manual reset limit switches shall be installed in approved, accessible locations where they can be reset easily.

4. The temperature limit switch sensing element shall be installed in a serpentine pattern and in accordance with the manufacturer's installation instructions.

5. Each bend shall be supported with a capillary clip. Provide 1 ft of sensing element for each 1 ft of coil area.

D. Averaging Temperature Sensing Elements:

1. Sensing elements shall be installed in a serpentine pattern.

2. Averaging sensors shall be installed in a serpentine manner vertically across the duct. Each bend shall be supported with a capillary clip.

E. Water Differential pressure sensors:

1. Differential pressure sensors shall be installed with valved taps into the piping to ensure serviceability without draining the system

2. Sensors shall be mounted with bleed valves

3. After sensor installation any air shall be eliminated using the bleed valves to ensure reading accuracy

4. The sensors shall be located to ensure accessibility.

F. Flow Switches:

1. Use correct paddle for pipe diameter.

2. Adjust flow switch in accordance with manufacturer’s instructions.

3.11 MISCELLANEOUS WIRING AND CONTROL WORK

A. Boilers and pumps:

1. Wire flow switches through boiler safety circuit and BAS.

2. Provide BAS integration of equipment as described in Section 23 52 00.

3. Provide control wiring to variable frequency drives provided per Section 20 52 00 to control pump speeds as recommended by boiler manufacturer.

4. Provide hardware and software including controllers, converters, wiring, and field programming to integrate MODBUS boiler controller communication with BACnet building network. Provide Modbus/BACnet IP Gateway and points mapping effort as needed to map pellet boiler MODBUS Registers to BACnet objects, Schneider Electric VW3A3601 communications module, or similar.

3.13 START-UP AND COMMISSIONING

A. Equipment and systems that make up the HVAC Controls shall be commissioned as specified in Sections 01 91 13 and 23 08 00. Requirements outlined in those Sections shall be completed along with requirements outlined in 3.14 START-UP AND COMMISSIONING.

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

C. System Start -up: When installation of system is complete, calibrate equipment and verify transmission media operation before system is placed on-line. Testing, calibrating, adjusting and final field tests shall be completed by system installer. Verify that systems are operable from local controls in specified failure mode upon panel failure or loss of power. Upon completion of calibration, Contractor shall startup system, perform necessary testing and run diagnostic tests to ensure proper operation.

Contractor shall be responsible for generating software and entering database information necessary to perform sequence of control and specified software routines.

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D. Verify that each control panel has been installed according to plans, specifications and approved shop drawings. Calibrate, test, and have signed off each control sensor and device.

E. Each BAS program shall be put on line and commissioned. The contractor shall, confirm each programmed sequence of operation and compare the results in writing. In addition, each control loop shall be tested to verify proper response and stable control, within specified accuracy. Any discrepancies between the specification and the actual performance will be immediately rectified and re-tested. System program test results shall be recorded on data sheets and submitted to Engineer.

F. Modifications: Provide any recommendation for system modification in writing to Owner’s Representative. Do not make any system modification, including operating parameters and control settings, without prior approval from Owner’s Representative.

G. After final adjustments and testing, provide trend logs of control points of each system over a 24 hour period to demonstrate operation of control system. Trend logs of systems to be run simultaneously for maximum number of trendable points possible with each controller, to show interaction of various systems.

H. After final acceptance, allow 40 hours of technician’s time to monitor, trend and adjust control system during warranty period to fine tune programmed items and ensure system is operating properly. Time normally required to address warranty issues is excluded. Submit trend logs of controlled equipment, as requested by Engineer periodically, to verify control system performance.

3.15 DEMONSTRATION

A. Demonstration: Control equipment shall be tested under operating conditions by a qualified technician in the employ of the Controls Manufacturer, in the presence of Owner's representative or Mechanical Engineer. Upon completion of testing and adjustments, submit written certification to Mechanical Engineer that the controls have been calibrated, adjusted and are operating satisfactorily.

B. Provide certificate stating that control system has been tested and adjusted for proper operation.

C. Demonstration:

1. Prior to acceptance, the control system shall undergo a series of performance tests to verify operation and compliance with this specification. These tests shall occur after the Contractor has completed the installation, started up the system, and performed his/her own tests.

2. The tests described in this section are to be performed in addition to the tests that the contractor performs as a necessary part of the installation, start-up, and debugging process and as specified in the “Control System Checkout and Testing” article in Part 3 of this specification. The engineer will be present to observe and review these tests. The Engineer shall be notified at least 10 days in advance of the start of the testing procedures.

3. The demonstration process shall follow that approved in Part 1, “Submittals.” The approved checklists and forms shall be completed for all systems as part of the demonstration.

4. The contractor shall provide at least two persons equipped with two-way communication and shall demonstrate actual field operation of each control and sensing point for all modes of operation including day, night, occupied, unoccupied, fire/smoke alarm, seasonal changeover, and power failure modes. The purpose is to demonstrate the calibration, response, and action of every point and system. Any test equipment required to prove the proper operation shall be provided by and operated by the contractor.

5. As each control input and output is checked, a log shall be completed showing the date, technician’s initials, and any corrective action taken or needed.

6. Demonstrate the following:

a. Specified facility management software is installed and operational.

b. Compliance with sequences of operation through all modes of operation.

c. Complete operation of operator interface.

d. DDC control loop response. The contractor shall supply trend data output in a graphical form showing the step response of each DDC control loop. The test shall show the loop’s response to a change in set point, which represents a change of actuator position of at least

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25% of its full range. The sampling rate of the trend shall be from 10 seconds to 3 minutes, depending on the speed of the loop. The trend data shall show for each sample the set point, actuator position, and controlled variable values. Any loop that yields unreasonably under-damped or over-damped control shall require further tuning by the Contractor.

e. Demonstrate heating hot water temperature reset.

f. BAS system equipment start/stop, and manually start/stop from BAS terminal.

g. Commandable equipment fails to the desired state on electrical power failure and restarts on power restoration.

h. Equipment under BAS control starts and stop automatically as required by the stop/start program or by an operator defined schedule.

i. Temperature control systems under BAS control operate correctly to maintain respective temperatures within acceptable limits.

j. Equipment monitored for safety or information purposes generates the required response when a condition needing attention occurs.

7. Operational logs for each system that indicate all set points, operating points, valve positions, mode, and equipment status shall be submitted to the architect/engineer. These logs shall cover three 48-hour periods and have a sample frequency of not more than 10 minutes. The logs shall be provided in both printed and electronic formats.

8. Any tests that fail to demonstrate the operation of the system shall be repeated at a later date.

The contractor shall be responsible for any necessary repairs or revisions to the hardware or software to successfully complete tests.

END OF SECTION