final 23 09 00 Electrical Control Systems Facilities Mana.pdf

OFFUTT AIR FORCE BASE

(092036) 23 09 00-1 (Repair AHU O-Club, B462)

2010 by FEI

SECTION 23 09 00

BUILDING MANAGEMENT CONTROL SYSTEMS (BMCS)

PART 1 - GENERAL

1.1 WORK INCLUDED

A. Extent of electric control system work required by this section is indicated by drawings and schedules, and by requirements of this section.

1. Control sequences are specified in Division 23 section "Sequence of Operation".

B. Refer to Division 23 sections for installation of instrument wells, valve bodies, and dampers in mechanical systems.

C. Extension of Existing Building Management Control System (BMCS):

1. Furnish and install for this project an extension of the existing Honeywell EBI BMCS. Provide the functional features as defined in Part 1-General Requirements, Part 2-Products, and Part

3-Execution of these Specifications. Provide a complete and operational system to perform sequences of operations stated within section ―Sequence of Operation‖.

2. The control system shall consist of a high-speed, peer-to-peer network of DDC controllers and an existing web-based operator interface. Depict each mechanical system and building floor plan by a point-and-click graphic. The existing web server with a network interface card shall gather data from this system and generate web pages accessible through a conventional web browser on each authorized PC connected to the network. Operators shall be able to perform all normal operator functions through the web browser interface.

3. The work under this Section shall include materials and labor to perform work required for the installation of the BMCS as specified.

4. The drawings and Specifications are complementary to one another—meaning that what is called for on one is to be considered called for in both. Where conflicts exist between the

Specifications and/or drawings, the more stringent requirement shall apply.

5. The BMCS Contractor shall be responsible for field verification of site conditions and for gathering all necessary field data for all items to be provided under this contract prior to submitting his or her bid.

6. Where work specified under other Sections of this Specification connects to equipment or systems that are listed and described in this Section, the BMCS Contractor shall provide proper connection(s) to such equipment, including trade coordination.

D. Provide all temperature control wiring not shown on the electrical drawings.

1. Temperature control wiring shall be defined as wiring from any device furnished as part of the temperature control system, to the connection point with equipment furnished under other sections, or as required in the sequence of operation.

2. Provide power wiring to control panels, sensors, actuators, and accessories as necessary.

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3. The term wiring shall include wire conduit, miscellaneous material and labor required for mounting and wiring electrical control devices.

4. Wiring shall comply with the requirements of Division 26.

E. Provide the following electrical work as work of this section, complying with requirements of Division 26 sections:

1. All electrical power and control wiring required for the control system that is not specifically shown on the electrical drawings.

F. Refer to Division 23 section ―Mechanical General Provisions‖ for equipment certification requirements.

1.2 DEFINITIONS

A. Algorithm: A software procedure for solving a recurrent mathematical or logical problem.

B. Analog: A continuously varying signal or value (temperature, current, velocity, etc.).

C. Binary: A two-state system where an "ON" condition is represented by a high signal level and an "OFF" condition is represented by a low signal level.

D. BMCS Contractor: The Contractor responsible for the installation of the system specified herein.

E. Control Process: The software required to perform a complete control loop from input signal to interlock logic, process calculation to final output signal control.

F. Control Wiring: Includes conduit, wire and wiring devices to install a complete Control System including motor control circuits, interlocks, thermostats, and like devices. Includes all wiring from a DDC cabinet to all sensors and control diagrams and required to execute the sequence of operation. Includes necessary power wiring to all BMCS devices, digital controllers including terminal units and actuators.

G. Deadband: A temperature range over which no heating or cooling energy is supplied, such as 72-78F, i.e. as opposed to single point changeover or overlap, or a range from setpoint over which no control action is taken.

H. Direct Digital Control System: The portion of the BMCS which provides closed loop control of all HVAC equipment.

I. Distributed Control: A system whereby all control processing is decentralized and independent of a central computer. The control system is built up of stand-alone controllers. A single controller failure shall not impact more than one system.

J. Integration: The ability of control system components from different manufacturers to connect together and provide coordinated control via real-time data exchange through a common communications data exchange protocol. Integration shall extend to the operator's workstation software, which shall support user interaction with all control system components. Methods of integration include industry standard protocols such as: BACnet, LonMark/LonTalk, ModBus, OLE for Process Control (OPC), or integrator interfaces between cooperating manufacturer's systems.

K. Network: A system of distributed control units that are linked together on a communication highway. A network allows sharing of point information between all control units. Additionally, a network provides central monitoring and control of the entire system from any distributed control unit location.

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L. Open Protocol Bus (OPB): A pre-programmed communications integrator that allows devices from one manufacturer to communicate and interact with those of another.

M. Open System Port (OSP): A user programmable communications port that provides the ability to develop custom communications processes to integrate other operating systems with the BMCS

System.

N. Operator-Machine Interface: A method by which an operator communicates with a BMCS System.

Operator-machine interfacing allows an operator to command, monitor, and program the system.

O. Peripheral: Input/Output equipment used to communicate with the computer and make copies of system outputs, peripherals include monitor, printer, etc.

P. Pick Point: A pick point is a graphical display element that allows the operator to 'click' the item and automatically display the associated screen or service. Any screen may have pick points to or be linked from any other screen. Pick points shall be configured on each display screen to provide a logical user navigation system using a ladder tree hierarchy.

Q. PID Control Loop: A mathematical calculation used to evaluate a control input and determine the control output value required to maintain the input value at setpoint. The PID (Proportional, Integral, Derivative) control loop shall have operator adjustable maximum rate of change, P and D gains and loop response time delay. The loop shall be self-integrating so that no integral constant is required and the loop shall not be subject to 'Integral Windup'.

R. The term 'provide' means 'provide complete in place', that is, furnished and installed and ready for operation and use.

1.3 QUALITY ASSURANCE

A. General:

1. The Facility Management System (FMS) is an installed system. The BMCS Contractor shall integrate into the FMS System.

2. The Facility Management System Contractor shall be a factory owned branch office or authorized factory representative that is regularly engaged in the engineering, programming, installation and service of FMS System interface of similar size and complexity.

3. The BMCS Contractor shall be responsible for all work fitting into place in a satisfactory and neat workmanlike manner acceptable to the Contracting Officer’s Representative.

4. The BMCS Contractor will coordinate with other Trade Contractors regarding the location and size of pipes, equipment, fixtures, conduit, ducts, openings, switches, outlets, and so forth, in order to eliminate any delays in the progress of the job.

B. Experience Record:

1. The BMCS Contractor shall have a minimum of five years experience with the complete, installation of Facility Management Systems of similar size and technical complexity. Provide a list of five comparable projects that have Facility Management Systems with the features as specified for this project. These projects must be on-line and functional.

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2. Employ specialists in the field of BMCS including: Programming, Engineering, Field

Supervision, and Installation. Specialists shall have a minimum of five years of experience with

Facility Management Systems.

C. Products:

1. The System architecture shall consist of the products of a manufacturer regularly engaged in the production of BMCS, and shall be the manufacturer’s latest standard of design. Controllers and DDC (Direct Digital Control) system components shall be current production products.

D. Quality Assurance Program:

1. Contractor shall implement a Quality Assurance Program. At minimum, this program shall consist of the following requirements:

a. Contractor shall assign a single individual to serve as the Quality Assurance Manager, who is to be responsible for the management of the program.

E. Governing Code & Standards Compliance:

1. Contractor shall comply with all current governing codes, ordinances, and regulations including

UL, NFPA, the local Building Code, NEC, and so forth.

2. IEEE 802.15.4 - IEEE Standard for Information technology - Telecommunications and information exchange between systems--Local and metropolitan area networks-- Specific requirements Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY)

Specifications for Low Rate Wireless Personal Area Networks (LR-WPANs)

F. FCC Regulation:

1. All electronic equipment shall conform to the requirements of FCC Regulation, Part 15, Section

15, Governing Radio Frequency Electromagnetic Interference, and be so labeled.

1.4 COORDINATION

A. Divisions:

1. Contractor shall cooperate with other divisions performing work on this project as necessary to achieve a complete and neat installation. The Contractor shall also consult the drawings and specifications of all trades to determine the nature and extent of others' work.

B. Contractors, Sub-contractors, Employees:

1. It will be the duty of this Contractor to work in cooperation with other contractors, and with other sub-contractors and employees, rendering assistance and arranging his or her work so that the entire project will be delivered in the best possible condition and in the shortest time.

1.5 SUBMITTALS

A. Shop Drawings, Product Data, and Samples:

1. Contractor shall submit within 60 days after award, installation drawings and control strategies for review.

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2. Each submittal shall have a cover sheet with the following information provided: submittal ID number; date; project name, address, and title; BMCS Contractor name, address and phone number; Contractor project manager, quality control manager, and project engineer names and phone numbers.

3. Each submittal shall include the following information:

a. Riser diagram showing all DDC controllers, operator workstations, network repeaters, and network wiring.

b. One-line schematics and system flow diagrams showing the location of all control devices.

c. Points list for each DDC controller, including: Tag, Point Type, System Name, Object

Name, Expanded ID, Display Units, Controller Type, Address, Cable Destination, Module Type, Terminal ID, Panel, Slot Number, Reference Drawing, and Cable

Number.

d. Vendor's own written description for each sequence of operations, to include the following:

(1) Sequences shall reference input/output and software parameters by name and description.

(2) The sequences of operations provided in the submittal by the BMCS

Contractor shall represent the detailed analysis needed to create actual programming code from the design documents.

(3) Points shall be referenced by name, including all software points such as programmable setpoints, range limits, time delays, and so forth.

(4) The sequence of operations shall cover normal operation and operation under the various alarm conditions applicable to that system.

e. Cataloged cut sheets of all equipment used. This includes, but is not limited to, the following: DDC Panels, peripherals, sensors, actuators, dampers, control air system components, and so forth.

f. Range and scale information for all transmitters and sensors. This sheet shall clearly indicate one device and any applicable options. Where more than one (1) device to be used is on a single sheet, submit two sheets, individually marked.

g. Training course outlines for each four-hour session.

h. Hardware data sheets for all operator workstations, local access panels, and portable operator terminals.

i. Software manuals for all applications programs to be provided as a part of the operator workstations, portable operator terminals, programming devices, and so forth for evaluation for compliance with the performance requirements of this Specification.

j. Initial project team Quality Assurance compliance report.

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4. BMCS Contractor shall not begin fabrication or field installation until receiving authorization to proceed in the form of an approved submittal. BMCS Contractor shall be solely responsible for the removal and replacement of any item not approved by submittal at no cost to the Owner.

1.6 O&M MANUALS

A. Submit three sets of each manual.

1. Include the following documentation in the Hardware Manual:

a. General description and cut sheets for all components.

b. Detailed wiring and installation illustrations and complete calibration procedures for each field and panel device.

c. Complete trouble-shooting procedures and guidelines.

d. Complete operating instructions for all systems.

e. Maintenance Instructions: Document all maintenance and repair/replacement procedures.

2. Include the following documentation in the DDC Software Manual:

a. Sequence of Operations.

b. Program Listing of Software Source Code OR Flow Chart.

c. Diagrams of Programming Objects.

d. Printed listing of controller and operator workstation database files.

e. Software Point Name Abbreviation List: Include Name, Description, Controller Where

Located, Point Type and Point ID.

f. I/O Point List. Include Point Name, Controller Location, Point Number, Control Device, Range and Span.

g. Printouts of all; Reports, Group Listings and Alarm Messages.

h. Index of all DDC point names with documentation manual page number references.

3. Provide three copies of all manufacturers manuals covering the installed system. This shall include, as a minimum:

a. System Engineering Manual.

b. System Installation Manual.

c. Programming Manual.

d. Engineering and Troubleshooting Bulletins.

e. All other pertinent manuals published by the control system manufacturer.

4. All manuals shall be provided in hard copy format or on a single Compact Disk (CD) as part of an on-line documentation system through the operator workstation.

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5. Includes plastic laminated board suitable for wall installation in existing Mechanical Room

1F13. Board to include control diagram, sequence of controls and a system start-up procedure.

1.7 WARRANTY

A. Material:

1. The Control System shall be free from defects in material and workmanship under normal use and service. If within one (1) year from the date of completion any of the equipment herein described is defective in operation, workmanship or materials, it will be replaced, repaired or adjusted at the option of the BMCS Contractor free of charge.

B. Installation:

1. The Control System shall be free from defects in installation workmanship for a period of one

(1) year from acceptance. The BMCS Contractor shall respond within 24 hours, and correct any defects in workmanship within one week of request of warranty service by the Owner.

2. Control System failures and deficiencies during the warranty period shall be adjusted, repaired, or replaced at no charge or reduction in service to the Owner.

1.8 Ownership Of Proprietary Material

A. Project-specific software and documentation shall become Owner's property. This includes, but is not limited to:

1. Graphics

2. Record drawings

3. Database

4. Application programming code

5. Documentation

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS AND BIDDERS

A. Manufacturer: Subject to compliance with requirements, provide electric control systems of one (1) of the following:

1. Honeywell with EBI Front End.

B. Manufacturer shall ensure no functionality is lost in integration of new system with existing building system. Contractor shall inspect all existing controls systems associated with this project before performing any work, and shall provide written confirmation that the existing system is operating properly or provide detailed explanations to the contrary.

C. Bidders: On this project are Honeywell International or Honeywell Authorized Controls Integrator. The

Controls Contractor shall hire the local Honeywell branch to complete all programming additions and alterations to the existing Honeywell Enterprise Building Integrator (EBI) software.

2.2 MATERIALS AND EQUIPMENT

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A. General: Provide electric control products in sizes and capacities indicated, consisting of valves, dampers, thermostats, clocks, sensors, controllers, and other components as required for complete installation. Except as otherwise indicated, provide manufacturer's standard control system components as indicated by published product information, designed and constructed as recommended by manufacturer. Provide electric control systems with the following functional and construction features as indicated.

B. 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.

C. Control Valves: Provide factory-fabricated electrical or pneumatic control valves of type, body material and pressure class indicated. Where type or body material is not indicated, provide selection as determined by manufacturer for installation requirements and pressure class, based on maximum pressure and temperature rating of piping system. Except as otherwise indicated, provide valves which mate and match material of connecting piping. Equip control valves with control valve motors, and with proper shutoff ratings for each individual application.

1. Water Service Valves: Equal percentage characteristics with range of 50 to 1, and maximum full flow pressure drop of 5 PSIG.

2. Type: Provide two- or three-way control valves for two-position or modulating service as shown.

a. Water Valves.

(1) Valves providing two-position service shall be quick opening. Two-way valves shall have replaceable disc or ball.

(2) Close-off (Differential) Pressure Rating. Valve actuator and trim shall provide the following minimum close-off pressure ratings.

(a) Two-way: 150% of total system (pump) head.

(b) Three-way: 300% of pressure differential between ports A and B at design flow or 100% of total system (pump) head.

b. Ports. Valves providing modulating service shall have equal percentage ports.

c. Sizing.

(1) Two-position service: line size.

(2) Two-way modulating service: select pressure drop equal to 35 kPa (5 psi).

(3) Three-way modulating service: select pressure drop equal to 35 kPa (5 psi).

d. Fail Position: Water valves shall fail normally open or closed as follows unless otherwise specified.

(1) Water zone valves: normally open.

(2) Heating coils: normally open.

(3) Chilled water control valves: normally closed.

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(4) Other applications: as scheduled or as required by sequences of operation.

3. Valve Trim and Stems: Polished stainless steel.

4. Packing: Spring-loaded Teflon, self-adjusting.

5. Terminal Unit Control Valves: Provide control valves for control of terminal units including, but not necessarily limited to, convectors, finned tube radiation, VAV boxes, and fan-coil units that are of integral motor type. Provide modulating type valves

D. Dampers: Provide automatic control dampers as indicated, with damper frames not less than formed

13-gage galvanized steel. Provide mounting holes for enclosed duct mounting. Provide damper blades not less than formed 16-gage galvanized steel, with maximum blade width of 8 inches. Equip dampers with motors, with proper rating for each application.

1. Secure blades to 1/2-inch diameter zinc-plated axles using zinc-plated hardware. Seal off against spring stainless steel blade bearings. Provide blade bearings of nylon and provide thrust bearings at each end of every blade. Construct blade linkage hardware of zinc-plated steel and brass. Submit leakage and flow characteristic, plus size schedule for controlled dampers.

2. Operating Temperature Range: From -20 o F to 200

F.

3. For standard applications as indicated, provide parallel or opposed blade design (as selected by manufacturer's sizing techniques) with optional closed-cell neoprene edging.

4. For low-leakage applications as indicated, provide parallel or opposed blade design (as selected by manufacturer's sizing techniques) with inflatable seal blade edging, or replaceable rubber seals, rated for leakage at less than 10 cfm/sq. ft. of damper area, at differential pressure of 4 inches w.g. when damper is being held by torque of 50 inch-pounds.

5. Provide unit ventilator outside air dampers with adjustable minimum settings so that ventilation can be adjusted for each space or room.

E. Dampers and Valve Actuators: Size each motor to operate dampers or valves with sufficient reserve power to provide smooth modulating action or 2-position action as specified.

1. Electronic actuation shall be provided.

2. The actuator shall be direct coupled over the shaft, enabling it to be mounted directly to the damper shaft without the need for connecting linkage. The fastening clamp shall be of a "V" bolt design with associated "V" shaped, toothed cradle attaching to the shaft for maximum strength and eliminating slippage. Spring return actuators shall have a "V" clamp assembly of sufficient size to be directly mounted to an integral jackshaft of up to 1.05 inches when the damper is constructed in this manner. Single bolt or set screw type fasteners are not acceptable.

3. The actuator shall have electronic overload or digital rotation sensing circuitry to prevent damage to the actuator.

4. For power-failure/safety applications, an internal mechanical, spring return mechanism shall be built into the actuator housing.

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5. Field selectable spring return direction.

6. Proportional actuators shall accept a 0 to 10 VDC or 0 to 20 mA control signal and provide a 2 to 10 VDC or 4 to 20 mA operating range. An actuator capable of accepting a pulse width modulating control signal and providing full proportional operation of the damper is acceptable.

Include field adjustable zero and span. All actuators shall provide a 2 to 10 VDC position feedback signal.

7. Nominal 24 VAC for 24 VAC/DC actuators include Class 2 wiring.

8. All non-spring return actuators shall have an external manual gear release to allow manual positioning of the damper when the actuator is not powered. Spring return actuators with more than 60 in-lb torque capacity shall have a manual crank for this purpose.

9. NEMA rated, include on-off toggle switch.

10. Actuators shall be provided with a conduit fitting and a minimum three-foot electrical cable and shall be pre-wired to eliminate the necessity of opening the actuator housing to make electrical connections.

11. Actuators shall be Underwriters Laboratories Standard 873 listed and Canadian Standards

Association Class 4813 02 certified as meeting correct safety requirements and recognized industry standards.

12. Actuators shall be designed for a minimum of 60,000 full stroke cycles at the actuator's rated torque and shall have a 2-year manufacturer's warranty, starting from the date of installation.

Manufacturer shall be IS09001 certified.

13. Torque: 150% of required duty.

F. Room Temperature Sensors: Provide room thermostats with locking covers, and with concealed or readily-accessible adjustment devices and dead band.

1. Temperature sensors shall be Resistance Temperature Device (RTD) or thermistor.

G. Remote-Bulb Thermostats: Provide remote-bulb thermostats of on-off or modulating type, as required by sequence of operation. Provide liquid-filled units designed to compensate for changes in ambient temperature at instrument case. Provide capillary and bulb of copper unless otherwise indicated.

Equip bulbs in water lines with separate wells of same material as bulb. Support bulbs installed in air ducts securely, to prevent damage and noise from vibrations. Provide averaging bulbs where shown or specified in operational sequence, consisting of copper tubing not less than 8 feet - 0 inches in length with either single or multiple-unit elements. Extend tubing to cover full width of duct or unit, and support adequately.

1. Provide scale settings and differential settings where applicable, which are clearly visible and adjustable from front of instrument.

2. Equip on-off remote-bulb thermostats with precision snap switches, and with electrical ratings as required by application.

3. Provide modulating remote-bulb thermostats of potentiometer type constructed so that complete potentiometer coil and wiper assembly is removable for inspection or replacement without disturbing calibration of instrument.

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H. Low-Temperature Protection Thermostats: Provide low-temperature protection thermostats of manual-reset type, with sensing elements 10 feet - 0 inches in length. Provide thermostat designed to operate in response to coldest 1 foot 0 inches length of sensing element, regardless of temperature at other parts of element. Support element properly to cover entire duct width. Provide separate thermostats for each 25 sq. ft. of coil face area or fraction thereof.

I. Duct Mounted Smoke Detectors: Duct Mounted Smoke Detectors are provided as work of Division 26.

J. Electronic Sensors:

1. Temperature sensors shall be of the thermistor (NTC) type with a high resistance change versus temperature change to insure good resolution and accuracy. Sensors shall be available for room, duct or well mounting. Room type sensors shall be available with built-in setpoint adjustment, occupancy override, and communication port. Sensors shall be available in various ranges to properly suit the application.

a. Immersion Sensor: Provide immersion sensors with a separable stainless steel well.

Well pressure rating shall be consistent with system pressure it will be immersed in and it shall withstand pipe design flow velocities.

b. Duct Sensors: Duct sensors shall be single point or averaging as shown. Averaging sensors shall be a minimum of 1.5 m (5 ft) in length per 1 m (10 ft

) of duct cross-section

2. Humidity sensors shall be of the solid state type utilizing hygroscopic plastic as the sensing element. The sensor shall vary the output voltage with a change in relative humidity. Sensors shall be available for room or duct mounting. Room type sensor shall be available with built in setpoint potentiometer.

a. Duct and room sensors shall have a sensing range of 10%-90% RH

b. Outdoor air humidity sensors shall have a sensing range of 10%-90% RH and shall be suitable for ambient conditions.

c. Humidity sensors shall not drift more than 1% of full scale annually and accuracy of plus or minus 2% of full scale.

3. Duct mounted averaging type temperature sensor shall utilize a resistance sensing element incorporated in a copper capillary of 20 feet. The sensor shall vary the output voltage with a change in temperature.

4. Differential pressure sensor shall vary the output voltage with a change in differential pressure.

The sensor shall connect to the remote controller by means of a three-wire unshielded cable.

5. Outdoor air sensor shall be of the thermistor (NTC) type with a high resistance change versus temperature change. Sensor shall be available for outdoor or duct mounting. Sensor shall connect to remote controller by means of a two-wire unshielded cable.

K. Electronic Controllers: Temperature/humidity/pressure controllers shall be proportional type with integrated circuits. Each output shall have separate zero and proportional band adjustments.

Indicating lamps shall be provided for each output which will vary in intensity to indicate amount of output. Controller shall be available with either 0-20 VDC proportional output, two position, or any combination. Controller shall have internal switches for each output to change the output signal to either direct or reverse. Controller shall be available with integral electronic circuit for absolute high or low limit control.

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L. Water Flow Switches: Provide water flow switches of stainless steel or bronze paddle types. Where flow switches are used in chilled water application, provide vapor-proof type to prevent condensation of electrical switch. Provide pressure-flow switches of bellows actuated mercury type or snap-acting type, with appropriate scale range and differential adjustment for service indicated.

M. Flow Switches: Flow-proving switches shall be paddle (water service only) or differential pressure type (air or water service) as shown. Switches shall be UL listed, SPDT snap-acting, and pilot duty rated (125 VA minimum).

1. Paddle switches shall have adjustable sensitivity and NEMA 1 enclosure unless otherwise specified.

2. Differential pressure switches shall have scale range and differential suitable for intended application and NEMA 1 enclosure unless otherwise specified.

N. CO2 Sensors: Sensor to be Non-dispersive infrared type and have a recommended calibration interval of 5 years. An LCD screen indicating sensor reading shall be used when it is not directly connected to a DDC system for monitoring. Control output shall be selectable and include 0 – 10V, 2 – 10V, and/or 4 – 20 mA options. Sensor shall be wall mounted for general space monitoring and duct mounted for monitoring air through ductwork.

1. A 24 VDC SPST relay may be required to independently provide equipment control. See

Sequence of Operation Section 15985 for operation.

O. Relays:

1. Control Relays: Control relays shall be plug-in type, UL listed, and shall have dust cover and

LED "energized" indicator. Contact rating, configuration, and coil voltage shall be suitable for application.

2. Time Delay Relays: Time delay relays shall be solid-state plug-in type, UL listed, and shall have adjustable time delay. Delay shall be adjustable ±100% from setpoint shown. Contact rating, configuration, and coil voltage shall be suitable for application. Provide NEMA 1 enclosure for relays not installed in local control panel.

P. Override Timers:

1. Unless implemented in control software, override timers shall be spring-wound line voltage, UL Listed, with contact rating and configuration required by application. Provide 0-6 hour calibrated dial unless otherwise specified. Flush mount timer on local control panel face or where shown.

Q. Current Transmitters:

1. AC current transmitters shall be self-powered, combination split-core current transformer type with built-in rectifier and high-gain servo amplifier with 4-20 mA two-wire output. Full-scale unit ranges shall be 10 A, 20 A, 50 A, 100 A, 150 A, and 200 A, with internal zero and span adjustment. Unit accuracy shall be ±1% full-scale at 500 ohm maximum burden.

2. Transmitter shall meet or exceed ANSI/ISA S50.1 requirements and shall be UL/CSA recognized.

3. Unit shall be split-core type for clamp-on installation on existing wiring.

R. Current Transformers:

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1. AC current transformers shall be UL/CSA recognized and shall be completely encased

(except for terminals) in approved plastic material.

2. Transformers shall be available in various current ratios and shall be selected for ±1% accuracy at 5 A full-scale output.

3. Use fixed-core transformers for new wiring installation and split-core transformers for existing wiring installation.

S. Voltage Transmitters:

1. AC voltage transmitters shall be self-powered single-loop (two-wire) type, 4-20 mA output with zero and span adjustment.

2. Adjustable full-scale unit ranges shall be 100-130 Vac, 200-250 Vac, 250-330 Vac, and 400-

600 Vac. Unit accuracy shall be ±1% full-scale at 500 ohm maximum burden.

3. Transmitters shall meet or exceed ANSI/ISA S50.1 requirements and shall be UL/CSA recognized at 600 Vac rating.

T. Voltage Transformers:

1. AC voltage transformers shall be UL/CSA recognized, 600 Vac rated, and shall have built-in fuse protection.

2. Transformers shall be suitable for ambient temperatures of 4°C-55°C (40°F-130°F) and shall provide ±0.5% accuracy at 24 Vac and 5 VA load.

3. Windings (except for terminals) shall be completely enclosed with metal or plastic.

U. Power Monitors: Power monitors shall be three-phase type and shall have three-phase disconnect and shorting switch assembly, UL listed voltage transformers, and UL listed split-core current transformers.

1. Power monitors shall provide selectable output: rate pulse for kWh reading or 4-20 mA for kW reading. Power monitors shall operate with 5 A current inputs and maximum error of

±2% at 1.0 power factor or ±2.5% at 0.5 power factor.

V. Current Switches:

1. Current-operated switches shall be self-powered, solid-state with adjustable trip current.

Select switches to match application current and DDC system output requirements.

W. Pressure Transducers:

1. Transducers shall have linear output signal and field-adjustable zero and span.

2. Continuous operating conditions of positive or negative pressure 50% greater than calibrated span shall not damage transducer sensing elements.

3. Water pressure transducer diaphragm shall be stainless steel with minimum proof pressure of 1000 kPa (150 psi). Transducer shall have 4-20 mA output, suitable mounting provisions, and block and bleed valves.

4. Water differential pressure transducer diaphragm shall be stainless steel with minimum proof pressure of 1000 kPa (150 psi). Over-range limit (differential pressure) and maximum

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X. Differential Pressure Switches: Differential pressure switches (air or water service) shall be UL listed, SPDT snap-acting, pilot duty rated (125 VA minimum) and shall have scale range and differential suitable for intended application and NEMA 1 enclosure unless otherwise specified.

Y. Local Control Panels: Provide control panels with suitable brackets for either wall or floor mounting, for each supply fan and miscellaneous control systems. Locate panel adjacent to systems served.

1. Fabricate panels of 14-gage furniture-quality steel, or 6063-T5 extruded aluminum alloy, totally enclosed, with hinged doors and keyed lock, with manufacturer's standard ship-painted finish and color. Provide UL-listed cabinets for use with line voltage devices.

2. Panel Mounted Equipment: Include temperature and humidity controllers, relays and automatic switches, except exclude low-temperature protection thermostats, firestats, and other devices excluded in sequence of operation. Fasten devices with adjustments accessible through front of panels.

3. Door-Mounted Equipment: Flush-mount (on hinged door) manual switches, including damper

"minimum-off" positioning switches, "summer-winter" switches, and "manual-automatic" switches; and including dial thermometers.

Z. Flow switches shall be of the paddle type equipped with SPOT contacts to establish proof of flow. Flow switches shall be of the vapor proof type similar to a McDonnel Miller FSS-V.

AA. Line voltage to 24V AC transformer shall be supplied as required to provide adequate control voltage to the control system.

BB. Indicators: Remote indicator shall interface with sensor/controller to indicate measured value at the sensor. Indicator shall be capable of indicating temperature, pressure or humidity.

2.3 GENERAL PRODUCT DESCRIPTION

A. The BMCS shall be capable of integrating existing FMS building functions, including equipment supervision and control, alarm management, energy management, and trend data collection.

B. The BMCS shall consist of the following:

1. Standalone DDC Panels

2. Standalone Application Specific Controllers (ASCs).

3. Operator's Workstations or Servers.

The system shall be modular in nature, and shall permit expansion of both capacity and functionality through the addition of sensors, actuators, ASCs, and operator devices.

C. The failure of any single component or network connection shall not interrupt the execution of control strategies at other operational devices.

2.4 NETWORKING/COMMUNICATIONS

A. Inherent in the system's design shall be the ability to expand or modify the network either via a local network, auto-dial telephone line modem connections, or a combination of the two networking schemes.

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B. Control products, communication media, connectors, repeaters, hubs, and routers shall comprise a unified control network. A gateway (translator) shall communicate with third-party equipment furnished or installed by others.

C. Install new wiring and network devices as required to provide a complete and workable control network.

Use existing Ethernet backbone for network segments.

D. Each controller shall have a communication port for temporary connection to a laptop computer or other operator interface. Connection shall support memory downloads and other commissioning and troubleshooting operations.

E. Inter-network operator interface and value passing shall be transparent to inter-network architecture.

1. An operator interface connected to a controller shall allow the operator to interface with each inter-network controller as if directly connected. Controller information such as data, status, and control algorithms shall be viewable and editable from each inter-network controller.

2. Inputs, outputs, and control variables used to integrate control strategies across multiple controllers shall be readable by each controller on the inter-network. Program and test all cross-controller links required to execute control strategies specified in Section 23 09 93

Appendix A. An authorized operator shall be able to edit cross-controller links by typing a standard object address or by using a point-and-click interface.

F. System shall automatically synchronize controller time clocks daily from an operator-designated controller via the inter-network. If applicable, system shall automatically adjust for daylight saving and standard time.

G. System shall be capable of being expandable to at least twice the required input and output objects with additional controllers, associated devices, and wiring.

2.5 DIGITAL PANELS

A. General: Digital Panels shall be microprocessor-based, multi-tasking, multi-user, digital control processors.

B. Memory:

1. Each Digital Panel shall have sufficient memory to support its own operating system and databases including:

a. Control processes.

b. Energy Management Applications.

c. Alarm Management.

d. Trend Data.

e. Maintenance Support Applications.

f. Operator I/O.

g. Dial-up Communications.

h. Manual Override Monitoring.

C. Point types: Each DDC panel shall support the following types of point inputs and outputs.

1. Digital Inputs for status/alarm contacts.

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2. Digital outputs for on/off equipment control.

3. Analog Inputs for temperature, pressure, humidity, flow, and position measurements.

4. Analog Outputs for valve and damper position control and capacity control of primary equipment.

5. Pulse Inputs for pulsed contact monitoring.

D. Expandability: The system shall be modular in nature, and shall permit easy expansion through the addition of field controllers, sensors, actuators.

E. Serial Communication Ports: Digital Panels shall provide at least two RS-232C serial data communication ports for simultaneous operation of multiple operator I/O devices, such as laptop computers, personal computers, and video display terminals.

F. Hardware Override Monitoring: Digital Panels shall monitor the status of all overrides, and include this information in logs and summaries to inform the operator that automatic control has been inhibited.

G. Local Status Indicator Lamps: The DDC panel shall provide local status indication for each binary input and output for constant, up-to-date verification of all point conditions without the need for an operator

I/O device.

H. Integrated Online Diagnostics: Each Digital Panels shall continuously perform self-diagnostics, communication diagnosis and diagnosis of all subsidiary equipment. Digital Panels shall provide both local and remote annunciation of any detected component failures or repeated failure to establish communication. Indication of the diagnostic results shall be provided at each Digital Panel.

I. Surge and Transient Protection: Isolation shall be provided at all network terminations, as well as all field point terminations, to suppress induced voltage transients consistent with IEEE Standard 587-

1980. Isolation levels shall be sufficiently high as to allow all signal wiring to be run in the same conduit as high voltage wiring where acceptable by electrical code.

J. Environment: Controller hardware shall be suitable for anticipated ambient conditions.

1. Controllers used outdoors or in wet ambient conditions shall be mounted in waterproof enclosures and shall be rated for operation at -29°C to 60°C (-20°F to 140°F).

2. Controllers used in conditioned space shall be mounted in dust-protective enclosures and shall be rated for operation at 0°C to 50°C (32°F to 120°F).

K. Serviceability:

1. Controllers shall have diagnostic LEDs for power, communication, and processor.

2. Wires shall be connected to a field-removable modular terminal strip or to a termination card connected by a ribbon cable.

L. Powerfail Restart: In the event of the loss of normal power, there shall be an orderly shutdown of the

Digital Panel to prevent the loss of database or operating system software. Nonvolatile memory shall be incorporated for all critical controller configuration data, and battery backup shall be provided to support the real-time clock and all volatile memory for a minimum of 72 hours.

1. Upon restoration of normal power, the Digital Panel shall automatically resume full operation without manual intervention.

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2. Should Digital Panel memory be lost for any reason, the user shall have the capability of reloading the Digital Panel via the local RS-232C port or local area network.

2.6 DDC SYSTEM SOFTWARE

A. Provide new control devices that shall be tied into the existing Building Controller in Room 1F13

Mechanical Room and shall be merged with the existing Honeywell Enterprise Building Integrator (EBI) control system. The existing Honeywell EBI server and multiple operator workstations are located at

Building 301. All new devices shall be accessible using the existing Honeywell control system interface. The controls contractor (or sub-contractor thereof) shall create new graphic pages for all new systems associated with this project created in a manner similar to the existing graphic pages. All

HVAC functions in the control system shall be controlled and/or monitored by the EBI system per the requirements of the associated controls drawings.

B. The contactor shall create and download application programs that meet the requirements of the sequence of control, time scheduling requirements, trend logging requirements and alarm handling requirements.

1. The contractor shall use a consistent point naming concept through the project. The contractor shall interview the Owner for any desired point naming schemes for this project.

2. All time schedules shall be fully configured with weekly schedules and all of the holidays identified by the Owner. The contractor shall interview the building manager to determine the building’s individual time schedule(s) and shall program the controller accordingly.

3. The contractor shall incorporate energy saving features such as optimal start/stop (with self-learning programming) and night setback programming for all heating/cooling equipment.

4. All trend logs identified in the sequence of control shall be fully configured and operational.

5. All alarm handling shall be fully configured with consistent alarm messages and priorities or category numbers to identify the system from which the alarm originates.

2.7 APPLICATION SPECIFIC CONTROLLERS - HVAC APPLICATIONS

A. Each Digital Panel shall be able to extend its monitoring and control through the use of standalone

Application Specific Controllers (ASCs).

B. Each ASC shall operate as a standalone controller capable of performing its specified control responsibilities independently of other controllers in the network. Each ASC shall be a microprocessor-based, multi-tasking, real-time digital control processor.

C. Each ASC shall have sufficient memory to support its own operating system and databases including:

1. Control Processes.

2. Energy Management Applications.

3. Operator I/O (Portable Service Terminal).

D. The operator interface to any ASC point data or programs shall be through the Digital Panel or portable operator's terminal connected to any ASC on the network.

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E. ASCs shall directly support the temporary use of a portable service terminal that can be connected to the ASC via zone temperature or directly at the controller. The capabilities of the portable service terminal shall include, but not be limited to, the following:

1. Display temperatures.

2. Display status.

3. Display setpoints.

4. Display control parameters.

5. Override binary output control.

6. Override analog setpoints.

7. Modification of gain and offset constants.

F. Powerfail Protection: All system setpoints, proportional bands, control algorithms, and any other programmable parameters shall be stored such that a power failure of any duration does not necessitate reprogramming the ASC.

G. Application Descriptions:

1. VAV Controllers:

a. VAV Controllers shall support the following types of point inputs and outputs:

(1) Proportional Cooling Outputs.

(2) Fan Control Output:

(On/Off Logic, or Proportional Series Fan Logic).

b. VAV Controllers shall support the following library of control strategies to address the requirements of the sequences described in the "Execution" portion of this specification, and for future expansion:

(1) Daily Schedules.

(2) Comfort/Occupancy Mode.

(3) Economy Mode:

Standby Mode.

Unoccupied.

Shutdown.

(4) Lighting Logic Interlock to Economy Mode.

(5) Temporary Override Mode:

Temporary Comfort Mode (Occupancy-Based Control).

Boost.

c. Occupancy-based Economy/Comfort Mode Control: Each VAV Controller shall have a provision for occupancy sensing overrides. Based upon the contact status of either a manual wall switch or an occupancy sensing device, the VAV Controller shall automatically select either an Economy or Comfort mode.

d. Occupancy-Based Zone Lighting Control: VAV Controllers shall provide an auxiliary binary output to serve as the interface to an associated lighting relay. Based upon the status of either an occupancy sensing device or manual wall switch, the VAV

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Controller shall provide a contact output to automatically turn on or off the lights. This accommodates occupant requirements while reducing electrical consumption.

Economy/Comfort (described in the previous section) and Lighting overrides shall be served by the same occupancy override input.

e. Temporary Override Modes:

(1) Temporary Occupancy Mode: The controller interface to the zone temperature sensor shall allow for an optional momentary switch to change the mode of the controller from economy to comfort and optionally interlock the room lights for a preset amount of time.

(2) Boost Mode: The controller interface to the zone temperature sensor shall allow for an optional momentary switch to override the controller's output to full heating or cooling. This command shall be active for a preset amount of time, to anticipate a substantial change in the room's load.

f. Alarm Management: Each VAV Controller shall perform its own limit and status monitoring and analysis to maximize network performance by reducing unnecessary communications.

2. AHU Controllers:

a. AHU Controllers shall support, but not be limited to, the following configurations of systems to address current requirements as described in the Execution portion of this specification, and for future expansion:

(1) Air Handling Units:

Mixed Air-Single Path.

Mixed Air-Dual Path.

100% Single Path.

100% Dual Path.

Generic Point Multiplexing.

b. AHU Controllers shall support all the necessary point inputs and outputs to perform the specified control sequences in a totally standalone fashion.

c. AHU Controllers shall have a library of control routines and program logic to perform the sequence of operation as specified in the Execution portion of this specification.

d. Continuous Zone Temperature Histories: Each AHU Controller shall automatically and continuously, maintain a history of the associated zone temperature to allow users to quickly…