23_09_23.01_29_AM_9.pdf

AM#9 READY TO ADVERTISE CLR039a LRDR Construction Package #1 - Clear AFS, Alaska

SECTION 23 09 23.01 29

DIRECT DIGITAL CONTROL FOR HVAC

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D 1693 (2008) Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics

ASTM D 635 (2010) Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastics in a Horizontal Position

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE C62.41 (1991; R 1995) Recommended Practice on Surge Voltages in Low-Voltage AC Power Circuits

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA 250 (2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA ICS 1 (2000; R 2015) Standard for Industrial Control and Systems: General Requirements

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2014; AMD 1 2013; Errata 1 2013; AMD 2 2013; Errata 2 2013; AMD 3 2014; Errata 3-4 2014; AMD 4-6 2014) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 1585 (1998; Rev thru Feb 2004) UL Standard for Safety Class 2 and Class 3 Transformers - Fourth Edition

UL 94 (2013; Reprint Jul 2015) Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

SECTION 23 09 23.01 29 Page 1

READY TO ADVERTISE

1.2 GENERAL REQUIREMENTS

The DDC system will be a Siemens APOGEE proprietary P2 communication protocol system provided by Siemens Industry, Inc. to accommodate a seamless extension of the existing site-wide DDC system at Clear AFS without the use of gateways, drivers, or protocol converters.

Siemens Industry, Inc. shall furnish and install a fully integrated building automation system, incorporating direct digital control (DDC) for energy management, equipment monitoring and control, and subsystems as herein specified.

The software programming and graphics for all other buildings in CP-2 (FY17) and LES shall be consistence with MCF programming. However, it will be the responbsibility under each design package.

Point list provided in the drawings are minimum required points. Provide additional points to comply with sequence and diagram requirements.

The direct digital control (DDC) shall be a complete system suitable for the heating, ventilating and air-conditioning (HVAC) system.

Refer to Section 25 10 11.01 00 POWER CONTROL AND MONITORING SYSTEM (PCMS) for additional PCMS integration requirements. The Contractor is responsible for integrating the PCMS. The interconnection to the PCMS is via the gateways as shown on the drawings.

1.2.1 Verification of Dimensions

After becoming familiar with all details of the work, the Contractor shall verify all dimensions in the field, and shall advise the Contracting Officer of any discrepancy before performing any work.

1.2.2 Drawings

Because of the small scale of the drawings, it is not possible to indicate all offsets, fittings, and accessories that may be required. The Contractor shall carefully investigate the mechanical, electrical, and finish conditions that could affect the work to be performed, shall arrange such work accordingly, and shall furnish all work necessary to meet such conditions.

1.2.3 Power-Line Surge Protection

Equipment connected to ac circuits shall be protected from power-line surges. Equipment protection shall meet the requirements of IEEE C62.41.

Fuses shall not be used for surge protection.

1.2.4 DDC System Network Accessibility

Where the systems to be controlled by the DDC system are located in multiple mechanical rooms, each mechanical room shall have at least one communication port for the portable workstation/tester. DDC controllers shall be located in the same room as the equipment being controlled or in an adjacent space which has direct access to the equipment room.

1.2.5 System Accuracy and Display

The system shall maintain an end-to-end accuracy for one year from sensor

SECTION 23 09 23.01 29 Page 2 to operator's console display for the applications specified and shall display the value as specified. Each temperature shall be displayed and printed to nearest 0.1 degree F.

1.2.5.1 Space Temperature

Space temperature with a range of 55 to 85 degrees F plus or minus 0.75 degree F for conditioned space; 10 to 130 degrees F plus or minus 1 degree F for unconditioned space.

1.2.5.2 Duct Temperature

Duct temperature with a range of 40 to 140 degrees F plus or minus 2 degrees F.

1.2.5.3 Outside Air Temperature

Outside air (OA) temperature with a range of minus 50 to plus 130 degrees F plus or minus 2 degrees F; with a subrange of 30 to 100 degrees F plus or minus 1 degree F.

1.2.5.4 Water Temperature

Water temperature with a range of 30 to 100 degrees F plus or minus 0.75 degree F; the range of 100 to 250 degrees F plus or minus 2 degrees F; and water temperatures for the purpose of performing Btu calculations using differential temperatures to plus or minus 0.5 degree F using matched sensors.

1.2.5.5 High Temperature

High temperature with a range of 200 to 500 degrees F plus or minus 2.0 degrees F.

1.2.5.6 Relative Humidity

Relative humidity, within a range of 20 to 80 percent, plus or minus 6.0 percent of range (display and print to nearest 1.0 percent).

1.2.5.7 Pressure

Pressure with a range for the specific application plus or minus 2.0 percent of range (display and print to nearest psi.)

1.2.5.8 Flow

Flow with a range for the specific application plus or minus 3.0 percent of range, and flows for the purpose of thermal calculations to plus or minus

2.0 percent of actual flow (display and print to nearest unit, such as gallons per minute).

1.2.5.9 KWh and kW Demand

KWh and kW demand with a range for the specific application plus or minus

1.0 percent of reading (display and print to nearest kWh or kW).

1.2.5.10 Analog Value Input

An analog value input to the system's equipment via an AI with a maximum

SECTION 23 09 23.01 29 Page 3 error of 0.50 percent of range, not including the sensor or transmitter error. This accuracy shall be maintained over the specified environmental conditions.

1.2.6 Redundancy

BMS system will be configured with redundant controllers and network switches for critical systems as indicated on the plans. For mechanical systems with primary (A), (B), and redundant (C) systems, completely separate controllers and network switches will be used for each system.

That is, there will be a primary (A) and (B) controllers, and a redundant

(C) controller and network switch as required.

Ethernet switch shall be provided inside each DDC control panel to allow controller to switch fail over.

1.2.7 Graphics

Provide graphics for each mechanical or other system controlled and/or monitored by the BMS, each HVAC terminal unit and/or temperature control zone, and each floor plan. Graphics are defined as the combination of background drawings and dynamic layers used by the graphics application within the BMS server software.

For each mechanical or other system controlled and/or monitored by the BMS, and for each typical terminal unit or zone application, provide background drawings similar to the associated BMS shop dwg(s) illustrating the system in schematic, flow diagram format, along with relevant BMS system devices.

Provide background drawings of floor plans of the facility including room numbers. provide background drawings for table of contents pages representing all system graphics with a site-wise home page with an organizational structure for future buildings.

For each system or terminal unit/zone template graphic, provide all associated physical points in the display to be dynamically updated and provide links as needed to navigate to other relevant graphics and/or appropriate home or table of contents pages. Also provide relevant virtual points including setpoints, overrides, or other points as needed for normal operator interaction with the system. For floorplans, provide all room-based temperature, humidity, or other environmental sensors or wall-mounted manually activated switch points in the display to be dynamically updated and provide links as needed to navigate to other relevant graphics and/or appropriate home or table of contents pages.

All physical points are to be represented on at least one graphic.

Provide graphics specific for battleshort mode and HEMP mode.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only.

Submittals with an "S" designation following the "G" are for inclusion in the Sustainability Notebook, in conformance to Section 01 33 29.01 00 SUSTAINABILITY REPORTING. Other designations following the "G" designation identify the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00.01 00

SUBMITTAL PROCEDURES:

SECTION 23 09 23.01 29 Page 4

SD-02 Shop Drawings

Building Management System; G JBRC

Drawings shall be on 11 by 17 inch sheets in the form and arrangement shown. The drawings shall use the same abbreviations, symbols, nomenclature and identifiers shown. Each control system element on a drawing shall have a unique identifier as shown. The Building Management System Drawings shall be delivered together as a complete submittal. Deviations must be approved by the Contracting Officer. Drawings shall be submitted along with Submittal SD-03, Product Data.

a. Building Management System Drawings shall include the following:

Element One: Drawing Index, Building Management System Legend.

Element Two: Valve Schedule, Damper Schedule.

Element Four: Control System Schematic and Equipment Schedule.

Element Five: Sequence of Operation and Data Terminal Strip Layout.

Element Six: Control Loop Wiring Diagrams.

Element Seven: Motor Starter and Relay Wiring Diagram.

Element Eight: Communication Network and Block Diagram.

Element Nine: DDC Panel Installation and Block Diagram.

Element Ten: Graphics User Interface Screens: to be submitted as a separate submittal item

b. The Building Management System Drawing Index shall show the name and number of the building, military site, State or other similar designation, and Country. The Drawing Index shall list Building Management System Drawings, including the drawing number, sheet number, drawing title, and computer filename when used. The Building Management System Legend shall show generic symbols and the name of devices shown on the Building Management System Drawings.

c. The valve schedule shall include each valve's unique identifier, size, flow coefficient Cv, pressure drop at specified flow rate, spring range, positive positioner range, actuator size, close-off pressure data, dimensions, and access and clearance requirements data. Valve schedules may be submitted in advance but shall be included in the complete submittal.

d. The Building Management System schematics shall be in the form shown, and shall show all control and mechanical devices associated with the HVAC system. A system schematic drawing shall be submitted for each HVAC system.

e. The Building Management System equipment Schedule shall be in the form shown. All devices shown on the drawings having unique identifiers shall be referenced in the equipment schedule. Information to be included in the equipment schedule shall be the device unique

SECTION 23 09 23.01 29 Page 5 identifier, and additional important parameters (i.e., output range).

An equipment schedule shall be submitted for each HVAC system.

f. The Building Management System sequence of operation shall reflect the language and format of this specification, and shall refer to the devices by their unique identifiers as shown. No operational deviations from specified sequences will be permitted without prior written approval of the Contracting Officer. Sequences of operation shall be submitted for each Building Management System including each type of terminal unit control system.

g. The Building Management System wiring diagrams shall be functional wiring diagrams which show the interconnection of conductors and cables to HVAC control panel terminal blocks and to the identified terminals of devices, starters and package equipment. The wiring diagrams shall show necessary jumpers and ground connections. The wiring diagrams shall show the labels of all conductors. Sources of power required for Building Management Systems and for packaged equipment control systems shall be identified back to the panel board circuit breaker number, HVAC system control panel, magnetic starter, or packaged equipment control circuit. Each power supply and transformer not integral to a controller, starter, or packaged equipment shall be shown. The connected volt-ampere load and the power supply volt-ampere rating shall be shown. Wiring diagrams shall be submitted for each Building Management System.

SD-03 Product Data

Service Organizations; G JRC

Six copies of a list of service organizations qualified to service the Building Management System. The list shall include the service organization name, address, technical point of contact and telephone number, and contractual point of contact and telephone number.

Equipment Compliance Booklet; G JRC

The Building Management System Equipment Compliance Booklet (ECB) shall be in booklet form and indexed, with numbered tabs separating the information on each device. It shall consist of, but not be limited to, data sheets and catalog cuts which document compliance of all devices and components with the specifications.

The ECB shall be indexed in alphabetical order by the unique identifiers. Devices and components which do not have unique identifiers shall follow the devices and components with unique identifiers and shall be indexed in alphabetical order according to their functional name. The ECB shall include a Bill of Materials for each Building Management System. The Bill of Materials shall function as the Table of Contents for the ECB and shall include the device's unique identifier, device function, manufacturer, model/part/catalog number used for ordering, and tab number where the device information is located in the ECB. The ECB shall be submitted along with Submittal SD-02, Shop Drawings.

Commissioning Procedures; G C

Six copies of the Building Management System commissioning procedures, in booklet form and indexed, 60 days prior to the

SECTION 23 09 23.01 29 Page 6 scheduled start of commissioning. Commissioning procedures shall be provided for each Building Management System, and for each type of terminal unit control system. The Commissioning procedures shall reflect the format and language of this specification, and refer to devices by their unique identifiers as shown. The Commissioning procedures shall be specific for each HVAC system, and shall give detailed step-by-step procedures for commissioning of the system.

a. The Commissioning procedures shall include detailed, product specific set-up procedures, configuration procedures, adjustment procedures, and calibration procedures for each device. Where the detailed product specific commissioning procedures are included in manufacturer supplied manuals, reference may be made in the Building Management System commissioning procedures to the manuals.

Performance Verification Test Procedures; G C

Six copies of the Building Management 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 Building Management System performs in accordance with the sequences of operation, and other contract documents. An Building Management 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.

Training; G C

An outline for the Building Management System training course with a proposed time schedule. Approval of the planned training schedule shall be obtained from the Government at least 60 days prior to the start of the training. Six copies of Building Management System training course material 30 days prior to the scheduled start of the training course. The training course material shall include the operation manual, maintenance and repair manual, and paper copies of overheads used in the course.

SD-06 Test Reports

Commissioning Report; G C

Six copies of the Building Management System Commissioning Report, in booklet form and indexed, within 30 days after completion of the system commissioning. The commissioning report shall include data collected during the Building Management System commissioning procedures and shall follow the format of the commissioning procedures. The commissioning report shall include all configuration checksheets with final values listed for all parameters, setpoints, P, I, D setting constants, calibration data for all devices, results of adjustments, and results of testing.

Performance Verification Test; G C

SECTION 23 09 23.01 29 Page 7

Six copies of the Building Management System Performance Verification Test Report, in booklet form and indexed, within 30 days after completion of the test. The Building Management System performance verification test report shall include data collected during the Building Management System performance verification test. The original copies of all data gathered during the performance verification test shall be turned over to the Government after Government approval of the test results.

SD-10 Operation and Maintenance Data

Operation Manual; G C

Maintenance and Repair Manual; G C

Six copies of the Building Management System Operation Manual and Building Management System Maintenance and Repair Manual, for each Building Management System, 30 days before the date scheduled for the training course. Submit in accordance with Section

01 78 23.01 00 OPERATION AND MAINTENANCE DATA.

1.4 DELIVERY AND STORAGE

Products shall be stored with protection from the weather, humidity and temperature variations, dirt and dust, and other contaminants, within the storage condition limits published by the equipment manufacturer.

1.5 OPERATION MANUAL

An Building Management System operation manual in indexed booklet form shall be provided for each Building Management System. The operation manual shall include the Building Management System sequence of operation, and procedures for the HVAC system start-up, operation and shut-down. The operation manual shall include as-built Building Management System detail drawings. The operation manual shall include the as-built configuration checksheets, the procedures for changing Building Management System setpoints, and the procedures for placing HVAC system controllers in the manual control mode.

a. The procedures for changing Building Management System setpoints shall describe the step-by-step procedures required to change the process variable setpoints, the alarm setpoints, the bias settings, and setpoint reset schedules.

b. The procedures for placing HVAC system controllers in the manual control mode shall describe step-by-step procedures required to obtain manual control of each controlled device and to manually adjust their positions.

1.6 MAINTENANCE AND REPAIR MANUAL

An Building Management System maintenance and repair manual in indexed booklet form in hardback binders shall be provided for each Building Management System. The maintenance and repair manual shall include the routine maintenance checklist, a recommended repair methods list, a list of recommended maintenance and repair tools, the qualified service organizations list, the as-built commissioning procedures and report, the as-built performance verification test procedures and report, and the as-built equipment data booklet.

SECTION 23 09 23.01 29 Page 8

a. The routine maintenance checklist shall be arranged in a columnar format. The first column shall list all devices listed in the equipment compliance booklet, the second column shall state the maintenance activity or state no maintenance required, the third column shall state the frequency of the maintenance activity, and the fourth column for additional comments or reference.

b. The recommended repair methods list shall be arranged in a columnar format and shall list all devices in the equipment data compliance booklet and state the guidance on recommended repair methods, either field repair, factory repair, or whole-item replacement.

c. The as-built equipment data booklet shall include the equipment compliance booklet and manufacturer supplied user manuals and information.

d. If the operation manual and the maintenance and repair manual are provided in a common volume, they shall be clearly differentiated and separately indexed.

1.7 RISK MANAGEMENT FRAMEWORK

The contractor shall obtain Risk Management Framework Certification for the Building Management System (BMS) per Section 01 91 10.01 29

CYBERSECURITY/RISK MANAGEMENT FRAMEWORK REQUIREMENTS.

PART 2 PRODUCTS

2.1 GENERAL EQUIPMENT REQUIREMENTS

Units of the same type of equipment shall be products of a single manufacturer. Each major component of equipment shall have the manufacturer's name and address, and the model and serial number in a conspicuous place. Materials and equipment shall be standard products of a manufacturer regularly engaged in the manufacturing of such products, which are of a similar material, design and workmanship. The standard products shall have been in a satisfactory commercial or industrial use for two years prior to use on this project. The two years' use shall include applications of equipment and materials under similar circumstances and of similar size. The two years' experience shall be satisfactorily completed by a product which has been sold or is offered for sale on the commercial market through advertisements, manufacturers' catalogs, or brochures.

Products having less than a two-year field service record will be acceptable if a certified record of satisfactory field operation, for not less than 6,000 hours exclusive of the manufacturer's factory tests, can be shown. The equipment items shall be supported by a service organization.

Items of the same type and purpose shall be identical, including equipment, assemblies, parts and components. Automatic temperature controls shall be direct digital controls that will provide the required sequence of operation.

2.1.1 Risk Management Framework Equipment Certification

Furnish a certification packet that demonstrates and certifies that control systems are designed and tested in accordance with DoD Instruction 8500.01, DoD Instruction 8501.01, and as defined by Section 01 91 10.01 29

CYBERSECURITY/RISK MANAGEMENT FRAMEWORK REQUIREMENTS.

SECTION 23 09 23.01 29 Page 9

2.1.2 Electrical and Electronic Devices

Electrical, electronic, and electropneumatic devices not located within a DDC panel shall have a NEMA ICS 1 enclosure in accordance with NEMA 250 unless otherwise shown.

2.1.3 Ambient Temperature Limits

DDC panels shall have ambient condition ratings of 35 to 120 degrees F and 10 to 95 percent relative humidity, noncondensing. Devices installed outdoors shall operate within limit ratings of minus 35 to plus 150 degrees F. Instrumentation and control elements shall be rated for continuous operation under the ambient environmental temperature, pressure, humidity, and vibration conditions specified or normally encountered for the installed location.

2.2 TUBING

2.2.1 Plastic

Plastic tubing shall have barbed fittings and valves. Plastic tubing shall have the burning characteristics of linear low-density polyethylene tubing, shall be self-extinguishing when tested in accordance with ASTM D 635, shall have UL 94 V-2 flammability classification, and shall withstand stress cracking when tested in accordance with ASTM D 1693. Plastic-tubing bundles shall be provided with Mylar barrier and flame-retardant polyethylene jacket.

2.3 WIRING

2.3.1 Terminal Blocks

Terminal blocks which are not integral to other equipment shall be insulated, modular, feed-through, clamp style with recessed captive screw-type clamping mechanism, shall be suitable for rail mounting, and shall have end plates and partition plates for separation or shall have enclosed sides.

2.3.2 Control Wiring for 24-Volt Circuits

Control wiring for 24-volt circuits shall be 18 AWG minimum, stranded copper and shall be rated for 300-volt service.

2.3.3 Wiring for 120-Volt Circuits

Wiring for 120-volt circuits shall be 18 AWG or thicker stranded copper and shall be rated for 600-volt service.

2.3.4 Instrumentation Cable

Instrumentation cable shall be 20 AWG, stranded copper, single- or multiple-twisted, and shall have a 300-volt insulation. Cables shall have overall cable insulation.

2.3.5 Transformers

Step down transformers shall be utilized where control equipment operates at lower than line circuit voltage. Transformers, other than transformers in bridge circuits, shall have primaries wound for the voltage available

SECTION 23 09 23.01 29 Page 10 and secondaries wound for the correct control circuit voltage.

Transformers shall be UL 1585 approved. Transformers shall be sized so that the connected load is no greater than 80% of the transformer rated capacity.

BMS contractor to provide 120VAC to 24VAC stepdown transformers as required for BMS control power. 120VAC power connections provided under Div. 26.

2.4 ACTUATORS

Actuators shall be pneumatic, electric or electronic as shown and shall be provided with mounting and connecting hardware. Electric or electronic actuators shall be used for variable air volume (VAV) air terminal units.

Actuators shall fail to their spring-return positions on signal or power failure. Actuators shall have a visible position indicator. Actuators shall smoothly open or close the devices to which they are applied and shall have a full stroke response time of 90 seconds or less. Electric or electronic actuators operating in series shall have an auxiliary actuator driver. Electric or electronic actuators used in sequencing applications shall have an adjustable operating range and start point. Pneumatic actuators shall be rated for 25 psig operating pressure except for high-pressure cylinder-type actuators.

2.4.1 Valve Actuators

Valve actuators shall be selected to provide a minimum of 125 percent of the motive power necessary to operate the valve over its full range of operation.

2.4.2 Positive Positioners

Positive positioners are required for pneumatic actuators. Each positive positioner shall be a pneumatic relay with a mechanical feedback mechanism and an adjustable operating range and starting point.

2.5 AUTOMATIC CONTROL VALVES

2.5.1 General

a. Control valves shall be two-way or three-way type single seated globe type or ball valve type for two-position or modulating service as shown.

Valves less than 1-1/2" shall meet ANSI Class IV leakage rating.

b. Valves used for chilled water shall be calibrated for 40% propylene glycol service at 51 degrees F average temperature while used for hot water shall be calibrated for 50% propylene glycol service at 120 degrees F average temperature.

c. Valve actuators shall be of electric type.

d. Control valve operators shall be sized to close against a differential pressure equal to the design pump head in normal operation.

e. Provide valves 2 inches and smaller with screwed end bronze or brass bodies. Provide valves 2-1/2 inches and larger with flanged ends, cast iron body and stainless steel trim.

f. For modulating service that require large valve size (above 6 inches), such as cooling tower temperature bypass, chiller head pressure ,etc. where

SECTION 23 09 23.01 29 Page 11 proper control with globe type control valve cannot be achieved or the application is not economical butterfly valves are allowed. Valves used for hydronic service shall be rated for propylene glycol service.

2.5.2 Water Valves

a. Control valves shall provide reliable flow characteristics for modulating service.

b. Sizing Criteria (non-Pressure Independent):

1) Two-way modulating service: Pressure drop shall be equal to twice the pressure drop through the coil, 50% of the pressure difference between supply and return mains, or 5 psi, whichever is greater.

2) Three-way modulating service: Pressure drop equal to twice the pressure drop through the coil, 5 psi maximum.

3) Differential pressure service: 70% of design flow and 50% of pump head.

4) Water valves shall fail normally open or closed, as scheduled on plans, or as required by sequences of operation.

c. Sizing Criteria (Pressure Independent):

1) Two-way modulating service: Two-way modulating service: Maximum flow shall be limited to the design flow of the coil. This GPM will be used to size the valve, not the traditional flow coefficient and pressure drop method.

2) The differential pressure range for effective pressure independent operation shall be 2.6 - 58 psi for ½" valves, in no instance shall the minimum effective pressure differential for effective pressure independent operation exceed 4 psi for valves under 2" line size.

d. Pressure Independent control Valves (PICV)

1) Valves shall be of globe-style bodies.

2) Valves shall contain a pressure independent regulator, a variable flow control, and an adjustable flow limiter.

3) The adjustable flow limiter shall indicate maximum GPM set points and allow field adjustment of the maximum allowable flow. The flow limiter shall allow the valve to retain the full range of flow control travel independent of the flow limit setting.

4) Valves shall have a linear flow characteristic.

5) The valves shall be provided with actuators by the same manufacturer factory installed.

6) Approved Manufacturer(s). Siemens

2.5.3 Steam Valves

a. Control valves shall be of linear flow characteristics for modulating service.

SECTION 23 09 23.01 29 Page 12

b. Sizing Criteria:

1) 15 psig or less; pressure drop 80% of inlet psig.

2) 16 to 50 psig; pressure drop 50% of inlet psig.

3) Over 50 psig; pressure drop as scheduled on plans.

a) Steam valves shall fail normally open or closed, as scheduled on plans, or as follows:

b) Heating coils in air handlers: normally open.

c) Steam to hot water heat exchanger: normally closed.

d) Other applications: as required by sequences of operation.

2.5.4 Valve Specification for Distribution Valves

a. Flanged Valves, line size 2 ½" to 6"

1) Controlled Media Specific Items

a) Steam control valve shall be suitable for saturated steam to a maximum temperature of 337°F (170°C) and a maximum pressure of 100 psig (690 kPa). A Linear flow characteristic and stainless steel trim is recommended.

b) Water control valve shall be suitable for chilled water to a minimum of 32°F (0°C) and hot water to a maximum temperature of 250°F (120°C). A modified equal percentage flow characteristic is recommended. Bronze trim is recommended for operating differential pressures up to 25psi. Stainless steel trim is recommended for operating differential pressures up to 50psi.

c) Glycol Solutions control valve shall be suitable for 50% ethylene or propylene glycol solutions, chilled glycol/water solutions to a minimum of 20°F (-7°C) and hot glycol/water solutions to a maximum temperature of 250°F (120°C). A modified equal percentage flow characteristic is recommended. Bronze trim is recommended for operating differential pressures up to 25psi.

Stainless steel trim is recommended for operating differential pressures up to 50psi.

2) General Construction Materials/Applicable

a) Standards Pressure Class 125 control valve bodies shall be constructed of gray cast iron according to ASTM A126B, and shall meet requirements of ANSI B16.1, pressure class ANSI 125.

b) Pressure Class 250 control valve bodies shall be constructed of gray cast iron according to ASTM A126B, and shall meet requirements of ANSI B16.1, pressure class ANSI 250.

c) For Class 125 and Class 250 valve assemblies, flange dimensions shall be according to ANSI B16.1, and valve body flange-to-flange dimensions shall be according to ANSI/ISA S75.03.

SECTION 23 09 23.01 29 Page 13

d) The control valve flow rate (Cv) shall meet the requirements of ANSI/ISA S75.02.

e) The control valve shall have a linear flow characteristic, according to ANSI/ISA S75.11.

f) The control valve shall have a modified equal percentage flow characteristic.

g) The control valve shall have a minimum rangeability of 100:1.

h) Valve shall meet the requirements of seat leakage Class IV (0.01%) according to ANSI/FCI 70.2, with no more than 125% of nominal force necessary to balance fluid forces applied to valve stem.

i) Chilled and Hot water valve stem packing shall be of a cartridge type and shall contain at least two EPDM o-rings.

j) Steam valve stem packing shall be of a spring-loaded cartridge type and shall contain at least seven Teflon v-rings and one EPDM o-ring

k) Control valve seat shall be made of stainless steel according to UNS S30300 or ASTM A582 Type 303, and plug shall be made of bronze according to UNS C84400.

l) Control valve seat and plug shall be made of stainless steel according to UNS S30300, or ASTM A582 Type 303.

m) Valve stem shall be made of polished stainless steel according to ASTM A581/A or ASTM A582/A.

3) Service Parts

a) Chilled and Hot water valve stem packing shall be of a cartridge type and shall contain at least two EPDM o-rings. The cartridge type packing shall be replaceable as a unit.

b) Steam valve stem packing shall be of a spring-loaded cartridge type and shall contain at least three Teflon v-rings and one EPDM o-ring.

c) The control plug and stem shall be replaceable as a unit.

b. Threaded Valves, line size ½" to 2"

1) Controlled Media Specific Items

a) The control valve shall be suitable for saturated steam to a maximum temperature of 337°F (170°C) and a maximum pressure of 100 psig (690 kPa). A Linear flow characteristic and stainless steel trim is recommended.

b) The control valve shall be suitable for chilled water to a minimum of 32°F (0°C) and hot water to a maximum temperature of 250°F (120°C). A modified equal percentage flow characteristic is recommended. Bronze or brass trim is recommended for operating differential pressures up to 25psi. Stainless steel trim is

SECTION 23 09 23.01 29 Page 14 recommended for operating differential pressures up to 50psi.

c) The control valve shall be suitable for 50% ethylene or propylene glycol solutions, chilled glycol/water solutions to a minimum of 20°F (-7°C) and hot glycol/water solutions to a maximum temperature of 250°F (120°C). A modified equal percentage flow characteristic is recommended. Bronze or brass trim is recommended for operating differential pressures up to 25psi.

Stainless steel trim is recommended for operating differential pressures up to 50psi.

2) General Construction Materials/Applicable Standards

a) Control valve bodies shall be constructed of cast bronze according to UNS C84400 or forged brass according to UNS C37700, and shall meet requirements of ANSI B16.1, pressure class ANSI 250.

b) Threaded connection specifications shall be according to ANSI B2.1.

c) The control valve flow rate (Cv) shall meet the requirements of ANSI/ISA S75.02.

d) The control valve shall have a linear flow characteristic, according to ANSI/ISA S75.11.

e) The control valve shall have a modified equal percentage flow characteristic..

f) The control valve shall have a minimum rangeability of 100:1.

g) Valve shall meet the requirements of seat leakage Class IV(0.01%) according to ANSI/FCI 70.2, with no more than 125% of nominal force necessary to balance fluid forces applied to valve stem.

h) Valve stem packing shall be of a cartridge type and shall contain at least two EPDM o-rings.

i) Valve stem packing shall be of a spring-loaded cartridge type and shall contain at least three Teflon v-rings and one EPDM o-ring.

j) Control valve seat shall be made of bronze according to UNS C84400 or stainless steel according to UNS S30300 or ASTM A582 Type 303, and plug shall be made of bronze according to UNS C84400 and/or brass according to UNS C36000 or C37700.

k) Control valve seat and plug shall be made of stainless steel according to UNS S30300, or ASTM A582 Type 303.

l) Valve stem shall be made of polished stainless steel according to ASTM A581/A or ASTM A582/A.

3) Service Parts

a) Chilled and Hot water valve stem packing shall be of a cartridge type and shall contain at least two EPDM o-rings. The

SECTION 23 09 23.01 29 Page 15 cartridge type packing shall be replaceable as a unit.

b) Steam valve stem packing shall be of a spring-loaded cartridge type and shall contain at least three Teflon v-rings and one EPDM o-ring.

c) The control plug and stem shall be replaceable as a unit.

2.5.5 Valve Specification for Terminal Unit Valve

a. Threaded Valves, line size ½" to 1"

1) Controlled Media Specific Items

a) The control valve shall be suitable for saturated steam to a maximum temperature of 250°F (120°C) and a maximum pressure of 15 psig (103.5 kPa). A linear flow characteristic and stainless steel trim is recommended.

b) The control valve shall be suitable for chilled water to a minimum of 32°F (0°C) and hot water to a maximum temperature of 250°F (120°C). Bronze or brass trim is recommended for operating differential pressures up to 25psi. Stainless steel trim is recommended for operating differential pressures up to 50psi.

c) The control valve shall be suitable for 50% ethylene or propylene glycol solutions, chilled glycol/water solutions to a minimum of 32°F (0°C) and hot glycol/water solutions to a maximum temperature of 250°F (120°C). Bronze or brass trim is recommended for operating differential pressures up to 25psi. Stainless steel trim is recommended for operating differential pressures up to 50psi.

2) General Construction Materials/Applicable Standards

a) Control valve bodies shall be constructed of cast bronze according to UNS C84400 or forged brass according to UNS C37700, and shall meet requirements of ANSI B16.1, pressure class ANSI 250.

b) Threaded connection specifications shall be according to ANSI B2.1.

c) The control valve flow rate (Cv) shall meet the requirements of ANSI/ISA S75.02.

d) The control valve shall have a modified equal percentage flow characteristic, according to ANSI/ISA S75.11.

e) The control valve shall have a minimum rangeability of 100:1 on valves with a Cv value greater than or equal to 1.0 and a minimum rangeability of 50:1 on valves with a Cv value less than 1.0.

f) Valve shall meet the requirements of seat leakage Class IV (0.01%) according to ANSI/FCI 70.2, with no more than 125% of nominal force necessary to balance fluid forces applied to valve stem.

SECTION 23 09 23.01 29 Page 16

g) Chilled water, Hot water, and Steam valve stem packing shall contain at least two EPDM o-rings.

h) Control valve seat shall be made of stainless steel according to UNS S30300, or ASTM A582 Type 303 and plug shall be made of bronze according to UNS C84400 and/or brass according UNS C36000 or C37700.

i) Control valve seat and plug shall be made of stainless steel according to UNS S30300, or ASTM A582 Type 303.

j) Valve stem shall be made of polished stainless steel according to ASTM A581/A or ASTM A582/A

2.5.6 Valve Specification for Zone Valves

a. Threaded or Sweat Connection Valves, line size ½" to 1"

1) Controlled Media Specific Items

a) The control valve shall be suitable for chilled water to a minimum of 34°F (1°C) and hot water to a maximum temperature of 230°F (110°C).

b) The control valve shall be suitable for 50% ethylene or propylene glycol solutions, chilled glycol/water solutions to a minimum of 34°F (1°C) and hot glycol/water solutions to a maximum temperature of 230°F (110°C).

2) General Construction Materials/Applicable Standards

a) Control valve bodies shall be constructed of forged brass and shall meet requirements of ANSI B16.1, pressure class ANSI 125.

b) Threaded connection specifications shall be according to ANSI B2.1.

c) Sweat connection specifications shall be according to ANSI B16.22.

d) The control valve flow rate (Cv) shall meet the requirements of ANSI/ISA S75.02.

e) The control valve shall have a linear flow characteristic, according to ANSI/ISA S75.11.

f) Valve shall meet the requirements of seat leakage Class III (0.1%) according to ANSI/FCI 70.2, with no more than 125% of nominal force necessary to balance fluid forces applied to valve stem.

g) Chilled and Hot water valve stem packing shall contain at least two EPDM o-rings.

h) Control valve seat and plug shall be made of brass according

UNS C36000.

i) Valve stem shall be made of polished stainless steel according to ASTM A581/A or ASTM A582/A.

SECTION 23 09 23.01 29 Page 17

2.5.7 Valve Specification for characterized Ball Valves

a. Threaded Valves, line size ½" to 2"

1) Controlled Media Specific Items

a) The control valve shall be suitable for chilled water to a minimum of 35°F (2°C) and hot water to a maximum temperature of 250°F (121°C).

b) The control valve shall be suitable for up to 50% ethylene or propylene glycol solutions, chilled glycol/water solutions to a minimum of 35°F (2°C) and hot glycol/water solutions to a maximum temperature of 250°F (121°C).

2) General Construction Materials/Applicable Standards

a) Control valve bodies shall be constructed of forged brass according to ASTM B283 (CuZn39Pb2 or equivalent), and shall meet requirements of ANSI 250 and 600WOG pressure classes.

b) Inlets and outlets shall be clearly marked on the valve bodies.

c) Valve ball shall consist of nickel-plated brass, chrome-plated brass or stainless steel.

d) End connections shall be NPT internally threaded according to

ANSI B1.20.1.

e) The control valve flow rate (Cv) shall meet the requirements of ANSI/ISA S75.02.

f) The control valve shall have an equal percentage flow characteristic, according to ANSI/ISA S75.11. A glass filled PTFE V port insert shall establish the flow coefficient of the valve.

The V port shall be retained by the valve body itself, not requiring additional retainers components. Manufacturer may also provide a glass filled polymer ball insert, as an integral part of the ball, for modulating flow applications. Flow coefficient adapters installed after final assembly of the valve shall not be allowed.

g) Valve shall meet the requirements of ANSI Class IV (0.01% of rated Cv) seat leakage, or better, according to ANSI/FCI 70.2, at the specified close-off pressure.

h) Chilled and Hot water valve shall have a blow-out proof stem with two EPDM (peroxide cured) O-rings. External stem retainers will not be allowed.

i) Valve stem shall be made of brass or stainless steel.

j) Valve shall have the ability to be manually operated in the event of a power failure.

SECTION 23 09 23.01 29 Page 18

2.5.8 Automatic Control Valve Actuators

a. Electronic Valve Actuators

1) Applicable Standards

a) 24V valve actuator shall be identified as a Class 2 operating device, according to NEC, Article 725.

b) 120V valve actuator shall be identified as a Class 1 operating device, according to NEC, Article 725.

c) The valve actuator shall be tested and listed by Underwriters Laboratories according to UL873, and shall bear the UL and cUL approval symbols.

d) The valve actuator shall be designed and tested to NEMA 1 standards, according to NEMA 250.

2) Direct Coupled

a) The control valve actuator shall be directly coupled to the valve, with no intermediary linkage kit required, to facilitate repair and/or replacement.

b) The control valve actuator shall be equipped with a manual override feature, allowing operation of the control valve upon loss of control power or signal, without the aid of a separate tool or auxiliary power supply.

3) Fail Safe operation

a) Upon power failure or loss of control signal, the valve actuator shall return to a fail-safe operating position by means of a mechanical spring.

b) Upon power failure or loss of control signal, the valve actuator shall return to a fail-safe operating position by self-contained electronic means.

c) Upon power failure, the valve actuator shall maintain its last controlled position (fail in place).

4) Visual position indication

a) The valve actuator shall provide indication of valve stem position, clearly visible from a distance of 15ft. (4.5m).

5) Ball Valve Actuators Torque Requirement

a) The control valve actuator shall provide minimum torque required for full valve shutoff position.

2.6 INSTRUMENTATION

2.6.1 Measurements

Transmitters shall be calibrated to provide the following measurements, over the indicated ranges:

a. Conditioned space temperature, from 55 to 85 degrees F.

SECTION 23 09 23.01 29 Page 19

b. Duct temperature, from 40 to 140 degrees F.

c. High-temperature hot-water temperature, from 200 to 500 degrees F.

d. Chilled-water temperature, from 30 to 100 degrees F.

e. Dual-temperature water, from 30 to 240 degrees F.

f. Heating hot-water temperature, from 50 to 250 degrees F.

g. Outside-air temperature, from minus 58 to 122 degrees F.

h. Relative humidity, 0 to 100 percent for space and duct high-limit applications.

i. Differential pressure for VAV supply-duct static pressure from 0 to 2.0 inches water gauge.

j. Pitot-tube air-flow measurement station and transmitter, from 0 to 0.1 inch water gauge for flow velocities of 700 to 1200 fpm, 0 to

0.25 inch water gauge for velocities of 700 to 1800 fpm, or 0 to 0.5 inch water gauge for velocities of 700 to 2500 fpm.

k. Electronic air-flow measurement station and transmitter, from 125 to 2500 fpm.

2.6.2 Temperature Sensors

1. Provide the following instrumentation as required by the monitoring, control and optimization functions. All temperature sensors shall use platinum RTD elements only, nickel or silicon are not acceptable.

2. Room Temperature (where wired to Building Controllers. See Application Specific Controller Section for Room Temperature Sensors wired to ASCs):

a. Temperature monitoring range +40/+90°F or +40/+240°F

b. Installation adjustments none required

c. Calibration adjustments none required

d. Factory calibration point 32°F

e. Accuracy at calibration point +/- 0.7°F

3. Liquid Immersion Temperature

a. Temperature monitoring range +30/+250°F, +20/+70°F,+32/+212°F, or +40/+240°F

b. Installation adjustment none required

c. Calibration adjustments none required

d. Factory calibration point 32°F

e. Accuracy at calibration point +/- 0.54°F

4. Duct (Single Point) Temperature

a. Temperature monitoring range +20/+120°F,+30/+250°F, or +40/+240°F

b. Installation adjustments none required

c. Calibration adjustments none required

d. Factory calibration point 70°F

e. Accuracy at calibration point +/- 0.54°F

SECTION 23 09 23.01 29 Page 20

5. Duct (Averaging) Temperature

a. Temperature monitoring range +20/+120°F or +40/+240°F

b. Installation adjustments none required

c. Calibration adjustments none required

d. Factory calibration point 32°F

e. Accuracy at calibration point +/- 0.54°F

6. Outside Air Temperature

a. Temperature monitoring range -58/+122°F

b. Output signal 4-20 mA

c. Installation adjustments none required

d. Calibration adjustments none required

e. Factory calibration point 32°F

f. Accuracy at calibration point +/- 0.54°F

2.6.3 Relative Humidity Instruments

A relative-humidity instrument for indoor application shall have a measurement range from 0 to 100 percent relative-humidity and be rated for operation at ambient air temperatures within the range of 25 to 130 degrees F. It shall be capable of being exposed to a condensing air stream (100 percent RH) with no adverse effect to the sensor's calibration or other harm to the instrument. The instrument shall be of the wall-mounted or duct-mounted type, as required by the application, and shall be provided with any required accessories. Instruments used in duct high-limit applications shall have a bulk polymer resistive sensing element.

Duct-mounted instruments shall be provided with a duct probe designed to protect the sensing element from dust accumulation and mechanical damage.

The instrument (sensing element and transmitter) shall be a two-wire, loop-powered device and shall have an accuracy of plus or minus three percent of full scale within the range of 20 to 80 percent relative humidity. The instrument shall have a typical long-term stability of 1 percent or less drift per year. The transmitter shall convert the sensing element's output to a linear 4-20 mAdc output signal in proportion to the measured relative-humidity value. The transmitter shall include offset and span adjustments.

2.6.4 Electronic Airflow Measurement Stations and Transmitters

2.6.4.1 Stations

Each station shall consist of an array of velocity sensing elements. The velocity sensing elements shall be of the RTD or thermistor type, producing a temperature compensated output. The sensing elements shall be distributed across the duct cross section in the quantity and pattern specified by the published application data of the station manufacturer.

The resistance to air flow through the airflow measurement station shall not exceed 0.08 inch water gauge at an airflow of 2,000 fpm. Station construction shall be suitable for operation at airflows of up to 5,000 fpm over a temperature range of 40 to 120 degrees F, and accuracy shall be plus or minus three percent over a range of 125 to 2,500 fpm. In outside air measurement or in low-temperature air delivery applications, the station shall be certified by the manufacturer to be accurate as specified over a temperature range of minus 20 to plus 120 degrees F.

SECTION 23 09 23.01 29 Page 21

2.6.4.2 Transmitters

Each transmitter shall produce a linear, 4-to-20 mAdc, output corresponding to the required velocity pressure measurement. The transmitter shall be a two-wire, loop powered device. The output error of the transmitter shall not exceed 0.5 percent of the calibrated measurement.

2.6.5 Pitot Tube Airflow Measurement Stations and Transmitters

2.6.5.1 Stations

Each station shall contain an array of velocity sensing elements.