Attachment_08_Sample_Project_18_September_2019_752-1001.pdf

CONSOLIDATE PFD TO F/30257 ZHTV150050

WRIGHT-PATTERSON AFB, OH

indicates the earliest the activity may begin.

c. Abbreviations: In TABLE I the abbreviation AAO is used for 'after approval of' and 'ACO' is used for 'after completion of'.

TABLE I. PROJECT SEQUENCING

SEQUENCING

(START OF ACTIVITY or

ITEM # TYPE DESCRIPTION DEADLINE FOR SUBMITTAL)

1 S Existing Conditions Report 2 S DDC Contractor Design Drawings 3 S Manufacturer's Catalog Data 4 S Network Bandwidth Usage Calculations 5 S Pre-construction QC Checklist 6 E Install Building Control System AAO #1 thru #5 7 E Start-Up and Start-Up Testing ACO #6 8 S Post-Construction QC Checklist 30 days ACO #7 9 S Programming Software 30 days ACO #7 10 S XIF Files 30 days ACO #7 11 S Software Plug-ins 30 days ACO #7 12 S Start-Up and Start-Up 30 days ACO #7 Testing Report 13 S Draft As-Built Drawings 30 days ACO #7 14 S PVT Procedures 7 days before schedule start of #15 and AAO #12 15 E PVT AAO #13 and #14 16 S PVT Report 14 days ACO #15 17 S GPPC Application Programs 14 days AAO #16 18 S Software Database 14 days AAO #16 19 S Final As-Built Drawings 14 days AAO #16 20 S O&M Instructions AAO #19 21 S Training Documentation AAO #12 and 7 days before scheduled start of #22 22 E Training AAO #20 and #21 23 S Closeout QC Checklist ACO #22

1.6 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.

1.7 OPERATION AND MAINTENANCE (O&M) INSTRUCTIONS

The HVAC control System Operation and Maintenance Instructions shall include:

a. "Manufacturer Data Package 3" as specified in Section 01 78 23 OPERATION AND MAINTENANCE DATA for each piece of control equipment.

b. "Manufacturer Data Package 4" as described in Section 01 78 23 for all air compressors.

c. HVAC control system sequences of operation formatted as specified.

SECTION 23 09 23 Page 13

FINAL DESIGN SUBMITTAL

d. Procedures for the HVAC system start-up, operation and shut-down including the manufacturer's supplied procedures for each piece of equipment, and procedures for the overall HVAC system.

e. As-built HVAC control system detail drawings formatted as specified.

f. Printouts of all installation and initial configuration settings for all control devices. To include auxiliary devices such as VFD's, chillers, air flow measuring stations, etc.

Printouts of all graphical programming blocks identifying their configuration settings, links, and bindings.

g. Routine maintenance checklist. The routine maintenance checklist shall be arranged in a table format. The first column shall list all installed devices, 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.

h. Qualified service organization list.

i. Start-Up and Start-Up Testing Report.

j. Performance Verification Test (PVT) Procedures and Report.

1.8 DEMOLITION OF EXISTING CONTROLS SYSTEMS

Prior to the start of construction the government, 88ABW/CE @ 257-4514, shall be given the opportunity to remove any controls it deems salvageable. During construction existing STAEFA and/or METASYS controls shall be removed in good condition, but are not to be discarded without prior government approval.

Unless otherwise specified:

a. The CSC shall remove all existing controls, sensors, actuators, tubing, wiring, panels, and any other control devices that were rendered unnecessary by the new installation.

b. On pneumatic systems the CSC shall remove all components of the main (supply) air lines, branch lines, air compressor, air dyer, filters, oil separators, and any related components that were rendered unnecessary by the new installation.

1.9 MAINTENANCE AND SERVICE

Services, materials and equipment shall be provided as necessary to maintain the entire system in an operational state as specified for a period of one year after successful completion and acceptance of the Performance Verification Test. Impacts on facility operations shall be minimized.

1.9.1 Description of Work

The adjustment and repair of the system shall include the manufacturer's required sensor and actuator (including transducer) calibration, span and range adjustment.

SECTION 23 09 23 Page 14

1.9.2 Personnel

Installation and Service personnel shall be qualified to accomplish work promptly and satisfactorily. Furthermore, personnel must possess factory certified training credentials required by controls manufacture for sales, installation, programming and service in the territory for which the work is being performed. The Government shall be advised in writing of the name of the designated service representative, and of any changes in personnel.

a. CSC personnel responsible for connecting the system to the network and accessing the system from government networking equipment shall obtain a current Common Access Card (CAC) account and User privileges for the WPAFB Domain.

b. To include but not limited to submission of DD Form 2875, fingerprints, and background security check.

1.9.3 Scheduled Inspections

Two inspections shall be performed at six-month intervals and all work required shall be performed. Inspections shall be scheduled in June and December. These inspections shall include:

a. Visual checks and operational tests of equipment.

b. Fan checks and filter changes for control system equipment.

c. Clean control system equipment including interior and exterior surfaces.

d. Check and calibrate each field device. Check and calibrate 50 percent of the total analog inputs and outputs during the first inspection.

Check and calibrate the remaining 50 percent of the analog inputs and outputs during the second major inspection. Certify analog test instrumentation accuracy to be twice the specified accuracy of the device being calibrated.

Randomly check at least 25 percent of all digital inputs and outputs for proper operation during the first inspection. Randomly check at least 25 percent of the remaining digital inputs and outputs during the second inspection.

e. Run system software diagnostics and correct diagnosed problems, to include but not limited to installation of any new firmware or software patches and/or revisions that have been developed by the manufacture since the last inspection.

f. Resolve any previous outstanding problems.

g. From the Energy Management Center located in building 30022, verify communications through direct connection and through EMCS server connection.

Verify graphics are installed and inspect 50 percent of all points for proper operation and configuration. Perform database backup to the EMCS server and verify User Accounts and Passwords have been installed for EMCS personnel and that all factory default and construction phase passwords have been removed.

1.9.4 Scheduled Work

This work shall be performed during regular working hours (0715 - 1600 hrs), Monday through Friday, excluding Federal holidays.

SECTION 23 09 23 Page 15

1.9.5 Emergency Service

The Government will initiate service calls when the system is not functioning properly. Qualified personnel shall be available to provide service to the system. A telephone number where the service supervisor can be reached at all times shall be provided. Service personnel shall be at the site within 24 hours after receiving a request for service. The control system shall be restored to proper operating condition as required per Section 01 78 02.00 10 CLOSEOUT SUBMITTALS.

1.9.6 Operation

Scheduled adjustments and repairs shall include verification of the control system operation as demonstrated by the applicable tests of the performance verification test.

1.9.7 Records and Logs

Dated records and logs shall be kept of each task, with cumulative records for each major component, and for the complete system chronologically. A continuous log shall be maintained for all devices. The log shall contain initial analog span and zero calibration values and digital points. Complete logs shall be kept and shall be available for inspection onsite, demonstrating that planned and systematic adjustments and repairs have been accomplished for the control system.

1.9.8 Work Requests

Each service call request shall be recorded as received and shall include its location, date and time the call was received, nature of trouble, names of the service personnel assigned to the task, instructions describing what has to be done, the amount and nature of the materials to be used, the time and date work started, and the time and date of completion. A record of the work performed shall be submitted within 5 days after work is accomplished.

1.9.9 System Modifications

Recommendations for system modification shall be submitted in writing. No system modifications, including operating parameters and control settings, shall be made without prior approval of the 88ABW/CEO (257-4514). Any modifications made to the system shall be incorporated into the Operations and Maintenance Instructions, and other documentation affected.

1.10 SURGE PROTECTION

1.10.1 Power-Line Surge Protection

Equipment connected to ac circuits shall be protected against or withstand power-line surges. Equipment protection shall meet the requirements of IEEE C62.41. Fuses shall not be used for surge protection.

1.10.2 Surge Protection for Transmitter and Control Wiring

DDC hardware shall be protected against or withstand surges induced on control and transmitter wiring installed outdoors and as shown. The equipment protection shall be protected against the following two waveforms:

a. A waveform with a 10-microsecond rise time, a 1,000-microsecond decay time and a peak current of 60 amps.

SECTION 23 09 23 Page 16

b. A waveform with an 8-microsecond rise time, a 20-microsecond decay time and a peak current of 500 amperes.

1.10.3 Surge Protection for Building Point of Connection (BPOC)

DDC BPOC hardware shall be protected from transient voltage surges with a transient voltage surge suppressor (TVSS) designed to provide protection against short-term over-voltage conditions. Shall meet the requirements of IEEE C62.41 and UL Listed Standard 498 and 1449.

a. UL Suppressed Voltage

(1) L-N: (8 x 20μs, 500 amperes 400V peak

(2) L-G: (8 x 20μs, 500 amperes 400V peak

b. RFI Rejection: 10 db Min., 4 MHz-100 MHz

c. MOV Response Time: Approx. 5 ns

d. MOV Surge Dissipation

(1) Peak Energy (10 x 1000μs) 210 Joules Min

(2) Peak Current (8 x 20μs) 130000 amperes

(3) Temperature Operating Range: 0-40 Deg C (32-104 Deg F)

1.11 INPUT MEASUREMENT ACCURACY

Sensors, transmitters and DDC Hardware shall be selected, installed and configured such that the maximum error of the measured value at the output of the DDC hardware is less than 150% of the maximum allowable error specified for the sensor or instrumentation.

1.12 BUILDING CONTROL NETWORK

The building control network shall consist of a backbone and one or more local control busses as specified.

1.12.1 Backbone Media

The backbone shall be a TP/FT-10 network for LONworks devices in accordance with ANSI/CEA 709.3 or MS/TP for BACnet devices according to the following criteria:

The backbone shall be an IP network as specified if both of the following conditions are met:

(1) the Network Bandwidth Calculations for a heavily loaded network show that more than 70% of the 78 kbps (kilobits per second) bandwidth is used or the Network Bandwidth Calculations for a normally loaded network show that more than 30% of the 78 kbps bandwidth is used.

(2) the Government has approved the Network Bandwidth Calculations submittal.

1.12.2 Control Network Requirements

The control network shall meet the following requirements:

SECTION 23 09 23 Page 17

a. BACnet controller networks. ASHRAE 135 allows for several network-wiring types and communication schemes, ranging in order of decreasing speed-and decreasing cost-from Ethernet to ARCNET, LonTalk and MS-TP (master/slave-token/passing using RS-485 wiring), to PTP (point-to-point, RS-232). The network shall be MS-TP for BACnet device.

b. LONworks controller networks. The backbone shall have no control devices connected to it. Only ANSI/CEA 709.1-C Routers and CEA 709.1-C TP/FT-10 to IP Routers may be connected to the backbone. The local control bus shall use CEA 709.1-C over a TP/FT-10 network in doubly-terminated bus topology in accordance with CEA 709.3

c. All DDC Hardware shall connect to a local control bus.

d. All DDC Hardware shall be locally powered; link power is not acceptable.

PART 2 PRODUCTS

PART 2 of this specification covers requirements for Products (equipment).

Installation requirements for these products are covered in PART 3 of this specification.

2.1 EQUIPMENT

2.1.1 General 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 these and similar products. The standard products shall have been in a satisfactory commercial or industrial use for two years prior to use on this project. The two year use shall include applications of equipment and materials under similar circumstances and of similar size. DDC Hardware not meeting the two-year field service requirement shall be acceptable provided it has been successfully used in the local area (50 miles) by the CSC in a minimum of two previous projects on federal government facilities. 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. Manufacturer's catalog data sheets documenting compliance with product specifications shall be submitted as specified for each product installed under this specification.

2.1.2 Operation Environment Requirements

All products shall be rated for continuous operation under the following conditions:

a. Pressure: Pressure conditions normally encountered in the installed location.

b. Vibration: Vibration conditions normally encountered in the installed location.

c. Temperature:

(1) Products installed indoors: Ambient temperatures in the range of 32 to

SECTION 23 09 23 Page 18

112 degrees F and temperature conditions outside this range normally encountered at the installed location.

(2) Products installed outdoors or in unconditioned indoor spaces: Ambient temperatures in the range of -35 to plus 151 degrees F and temperature conditions outside this range normally encountered at the installed location.

d. Humidity: 0% to 100% relative humidity, non-condensing and humidity conditions outside this range normally encountered at the installed location.

2.2 ENCLOSURES AND WEATHERSHIELDS

2.2.1 Enclosures

Enclosures shall meet the following minimum requirements:

a. Outdoors: Enclosures located outdoors shall meet NEMA 250 Type 3 requirements.

b. Mechanical and Electrical Rooms: Enclosures located in mechanical or electrical rooms shall meet NEMA 250 Type 2 or Type 4 requirements.

c. Other Locations: Enclosures in other locations including but not limited to occupied spaces, above ceilings, and plenum returns shall meet NEMA 250 Type 1 requirements.

Enclosures supplied as an integral (pre-packaged) part of another product are acceptable.

2.2.2 Weathershields

Weathershields for sensors located outdoors shall prevent the sun from directly striking the sensor. The weathershield shall be provided with adequate ventilation so that the sensing element responds to the ambient conditions of the surroundings. The weathershield shall prevent rain from directly striking or dripping onto the sensor. Weathershields installed near outside air intake ducts shall be installed such that normal outside air flow does not cause rainwater to strike the sensor. Weathershields shall be constructed of galvanized steel painted white, unpainted aluminum, aluminum painted white, or white PVC.

2.3 TUBING

2.3.1 Copper

Copper tubing shall conform to ASTM B 88 and ASTM B 88M

2.3.2 Stainless Steel

Stainless steel tubing shall conform to ASTM A 269

2.3.3 Plastic

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 or better, and shall withstand stress cracking when tested in accordance with ASTM D 1693. Plastic-tubing bundles shall be provided with Mylar barrier and

SECTION 23 09 23 Page 19 flame-retardant polyethylene jacket.

2.4 NETWORK HARDWARE

2.4.1 Global Building Network Hardware

2.4.1.1 Global Building Controller / Router

a. Acceptable Products;

1. Johnson Controls Inc: NAE (Network Automation Engine)

2. Siemens Building Technologies TALON: TALON Network Manager

3. No other network devices are permitted.

b. UPS: Uninterruptible Power Supply(s) is(are) required for the Global Building Controller(s), and Application Controllers that monitor emergency equipment, or is physically connected to any electrical circuit that has backup generator power for service.

c. The Global Building Controller /Router shall not contain a mechanical hard-drive.

CEA 709.1-C Routers (including routers configured as repeaters) shall meet the requirements of CEA 709.1-C and shall provide connection between two or more 709.3 TP/FT-10 channels.

2.4.1.2 CEA 709.3 Repeaters

CEA 709.3 Repeaters shall be physical layer repeaters in accordance with CEA 709.3.

2.4.2 Gateways

1) Gateways shall perform bi-directional protocol translation from one non-CEA 709.1-C protocol to CEA 709.1-C. Gateways shall incorporate exactly two network connections: one shall be for connection to a TP/FT-10 network in accordance with CEA 709.3 and the second shall be as required to communicate with the non-CEA 709.1-C network.

2) The BACnet communication protocol is the required protocol for all tiers of the network. Note: LonTalk is also an acceptable communications protocol for peer-to-peer communications between Application Controllers.

2.4.3 CEA-709.1-C to IP Router

CEA-709.1-C to IP Routers shall perform layer 3 routing of CEA-709.1-C packets over an IP network in accordance with CEA-852-B. The router shall provide the appropriate connection to the IP network and connections to the CEA-709.3 TP/FT-10 or TP/XF-1250 network. CEA-709.1-C to IP Routers shall support the Dynamic Host Configuration Protocol (DHCP; RFC 2131 for IP configuration and the use of an CEA-852-B Configuration Server (for CEA-852-B configuration), but shall not rely on these services for configuration. CEA-709.1-C to IP Routers shall be capable of manual configuration via a console RS-232 port.

2.5 WIRE AND CABLE

All wire and cable shall meet the requirements of NFPA 70 and NFPA 90A in addition to the requirements of this specification.

2.5.1 Terminal Blocks

SECTION 23 09 23 Page 20

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.

2.5.2 Control Wiring for Binary Signals

Control wiring for binary signals shall be 18 AWG copper and shall be rated for 300-volt service.

2.5.3 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.

2.5.4 Control Wiring for Analog Signals

Control Wiring for Analog Signals shall be 18 AWG, copper, single- or multiple-twisted, minimum 2 inch lay of twist, 100% shielded pairs, and shall have a 300-volt insulation. Each pair shall have a 20 AWG tinned-copper drain wire and individual overall pair insulation. Cables shall have an overall aluminum-polyester or tinned-copper cable-shield tape, overall 20 AWG tinned-copper cable drain wire, and overall cable insulation.

2.5.5 Transformers

Transformers shall be UL 5085-3 approved. Transformers shall be sized so that the connected load is no greater than 80% of the transformer rated capacity.

2.6 AUTOMATIC CONTROL VALVES

Valves shall have stainless-steel stems and stuffing boxes with extended necks to clear the piping insulation. Valve bodies shall meet ASME B16.34 or ASME B16.15 pressure and temperature class ratings based on the design operating temperature and 150% of the system design operating pressure.

Unless otherwise specified or shown, valve leakage shall meet ANSI/FCI 70-2 Class IV leakage rating (0.01% of valve Kv). Unless otherwise specified or shown, valves shall have globe-style bodies. Unless otherwise specified:

a. bodies for valves 1.5 inches and smaller shall be brass or bronze, with NPT threaded connections.

b. bodies for 2 inch valves shall have threaded ends

c. bodies for valves 2 to 3 inches shall be of brass, bronze or iron.

d. bodies for valves 2.5 inches and larger shall be provided with flanged-end connections.

e. for modulating applications, valve Kv (Cv) shall be within 100 to 125% of the Kv (Cv) shown.

f. for two position applications (where the two positions are full open and full closed) the Kv (Cv) shall be the largest available for the valve size.

g. valve and actuator combination shall be normally open or normally

SECTION 23 09 23 Page 21 closed as shown.

h. Control valves up to 4 inch shall be sized for a 3 to 5 psi drop.

Valves shall be packless, modulating, electrically or magnetically actuated.

Valves shall have true linear flow characteristics in relationship to valve opening

2.6.1 Ball Valves

Balls shall be stainless steel or nickel plated brass. Valves shall have blow-out proof stems. In steam and high temperature hot water applications, the valve-to-actuator linkage shall provide a thermal break.

2.6.2 Butterfly Valves

Butterfly valves shall be threaded lug type suitable for dead-end service and modulation to the fully-closed position, with carbon-steel bodies and non-corrosive discs, stainless steel shafts supported by bearings, and EPDM seats suitable for temperatures from -20 to plus +250 degrees F. The rated Kv (Cv) for butterfly valves shall be the value Kv (Cv) at 70% (60 degrees) open position. Valve leakage shall meet ANSI/FCI 70-2 Class VI leakage rating.

2.6.3 Two-Way Valves

Two-way modulating valves used for liquids shall have an equal-percentage characteristic. Two-way modulating valves used for steam shall have a linear characteristic.

2.6.4 Three-Way Valves

Three-way modulating valves shall provide equal percentage flow control with constant total flow throughout full plug travel.

2.6.5 Duct-Coil and Terminal-Unit-Coil Valves

Control valves with either flare-type or solder-type ends shall be provided for duct or terminal-unit coils. Flare nuts shall be provided for each flare-type end valve.

a. Terminal unit valves, 1/2 inch to 1 inch: Valves shall be sized for a 3 to 5 psi drop. Valve body shall be nickel-plated brass, rated at 125 psig.

b. Control valves shall be the Delta SoftTouch ST-series ball valves or equal.

2.6.6 Valves for Steam Service

Bodies for valves 4 inches and larger shall be iron or carbon steel.

Internal valve trim shall be Type 316 stainless steel. If the specified Kv (Cv) is not available the valve manufacturer's next largest size shall be used.

2.7 DAMPERS

SECTION 23 09 23 Page 22

2.7.1 Damper Assembly

A single damper section shall have blades no longer than 48 inch and shall be no higher than 72 inch. Maximum damper blade width shall be 8 inch. Larger sizes shall be made from a combination of sections. Dampers shall be steel, or other materials where shown. Flat blades shall be made rigid by folding the edges. Blade-operating linkages shall be within the frame so that blade-connecting devices within the same damper section shall not be located directly in the air stream. Damper axles shall be 1/2 inch minimum, plated steel rods supported in the damper frame by stainless steel or bronze bearings. Blades mounted vertically shall be supported by thrust bearings.

Pressure drop through dampers shall not exceed 0.04 inches water gauge at 1,000 ft/min in the wide-open position. Frames shall not be less than 2 inch in width. Dampers shall be tested in accordance with AMCA 500-D. Unless otherwise specified motorized control dampers shall:

a. Dampers shall have damper frames using 13 gauge galvanized steel.

b. Damper blades shall be parallel or opposed as required and shall be as recommended by manufacturer for application.

c. Dampers shall be Ruskin RCD45 or equal.

2.7.2 Operating Linkages

Operating links external to dampers, such as crank arms, connecting rods, and line shafting for transmitting motion from damper actuators to dampers, shall withstand a load equal to at least 300% of the maximum required damper-operating force. Rod lengths shall be adjustable. Links shall be brass, bronze, zinc-coated steel, or stainless steel. Working parts of joints and clevises shall be brass, bronze, or stainless steel. Adjustments of crank arms shall control the open and closed positions of dampers.

2.7.3 Damper Types

2.7.3.1 Flow Control Dampers

Outside air, return air, relief air, exhaust, face and bypass dampers shall be provided where shown and shall be parallel-blade or opposed blade type as shown on the Damper Schedule. Blades shall have interlocking edges and shall be provided with compressible seals at points of contact. The channel frames of the dampers shall be provided with jamb seals to minimize air leakage.

Unless otherwise shown, dampers shall be AMCA 511 Class 2 and shall not leak in excess of 20 cfm per square foot at 4 inches water gauge static pressure when closed. Outside air damper seals shall be suitable for an operating temperature range of -40 to plus 167 degrees F. Dampers shall be rated at not less than 2000 ft/min air velocity.

2.7.3.2 Mechanical Rooms and Other Utility Space Ventilation Dampers

Utility space ventilation dampers shall be as shown. Unless otherwise shown, dampers shall be AMCA 511 class 3 and shall not leak in excess of 80 cfm per square foot at 4 inches water gauge static pressure when closed. Dampers shall be rated at not less than 1500 ft/min air velocity.

SECTION 23 09 23 Page 23

2.7.3.3 Smoke Dampers

Smoke-damper and actuator assembly shall meet the current requirements of NFPA 90A, UL 555, and UL 555S. Combination fire and smoke dampers shall be rated for 250 degrees F Class II leakage per UL 555S.

2.8 SENSORS AND INSTRUMENTATION

Resistive type temperature devices will be used in lieu of 4-20ma temperature transmitters whenever practical to do so. Unless otherwise specified, sensors and instrumentation shall incorporate an integral transmitter or be provided with a transmitter co-located with the sensor. Sensors and instrumentation, including their transmitters, shall meet the specified accuracy and drift requirements at the input of the connected DDC Hardware's analog-to-digital conversion. Sensors and instrumentation, including their transmitters, shall meet or exceed the specified range.

2.8.1 Transmitters

The transmitter shall match the characteristics of the sensor. Transmitters providing analog values shall produce a linear 4-20 mAdc, 0-10 Vdc output corresponding to the required operating range and shall have zero and span adjustment. Transmitters providing binary values shall have dry contacts output. Transmitters with SNVT output are Application Specific Controllers (ASCs) and shall meet all ASC requirements. (note: ASCs are specified in paragraph DIRECT DIGITAL CONTROL (DDC) HARDWARE)

2.8.2 Temperature Sensors

2.8.2.1 Sensor Ranges and Accuracy

Temperature sensors may be provided without transmitters. Unless otherwise specified, Conditioned Space Temperature sensors will be non-adjustable setpoint type. When adjustable Condition Space Temperature sensors are specified, the adjustment display will be scaled for Warmer/Cooler and total adjustment will not exceed +/- 0 (zero) Deg F from the actual setpoint.

Temperature sensors, including transmitter if used, shall have minimum operating ranges, minimum accuracy and maximum drift as specified below for the application:

a. Conditioned Space Temperature

(1) Operating Range: 40 to 95 degrees F.

(2) Accuracy: +/- 1 degree F over the operating range.

(3) Drift: Maximum 1 degree F per year.

b. Unconditioned Space Temperature

(1) Operating Range: 20 to 150 degrees F.

(2) Accuracy: +/- 1 degree F over the range of 30 to 131 degrees F and +/- 4 degrees F over the rest of the operating range.

(3) Drift: Maximum 1 degree F per year.

c. Duct Temperature

SECTION 23 09 23 Page 24

(1) Operating Range: 40 to 140 degrees F.

(2) Accuracy: +/- 2 degrees F.

(3) Drift: Maximum 2 degrees F per year.

d. Outside Air Temperature

(1) Operating Range: -20 to 120 degrees F.

(2) Accuracy:

(a) +/- 2 degrees F over the range of -30 to plus 130 degrees F.

(b) +/- 1 degree F over the range of 30 to 100 degrees F.

(3) Drift: Maximum 1 degree F per year.

e. Chilled Water

(1) Operating Range: 30 to 100 degrees F.

(2) Accuracy: +/- 0.8 degrees F over the range of 35 to 65 degrees F and +/- 2 degrees F over the rest of the operating range.

(3) Drift: Maximum 0.8 degrees F per year.

f. Dual Temperature Water

(1) Operating Range: 30 to plus 240 degrees F.

(2) Accuracy: +/- 2 degrees F.

(3) Drift: Maximum 2 degrees F per year.

2.8.2.2 Point Temperature Sensors

Point Sensors shall be encapsulated in epoxy, series 300 stainless steel, anodized aluminum, or copper.

2.8.2.3 Averaging Temperature Sensors

Averaging sensors shall be a continuous element with a minimum length equal to 1 foot/square foot of duct cross-sectional area at the installed location. The sensing element shall have a bendable copper sheath.

2.8.2.4 Thermowells

Thermowells shall be Series 300 stainless steel with threaded brass plug and chain, 2 inch lagging neck and extension type well. Inside diameter and insertion length shall be as required for the application.

2.8.3 Relative Humidity Sensor

Relative humidity sensors shall use bulk polymer resistive or thin film capacitive type non-saturating sensing elements capable of withstanding a saturated condition without permanently affecting calibration or sustaining

SECTION 23 09 23 Page 25 damage. The sensors shall include removable protective membrane filters.

Where required for exterior installation, sensors shall be capable of surviving below freezing temperatures and direct contact with moisture without affecting sensor calibration. When used indoors, the sensor shall be capable of being exposed to a condensing air stream (100% RH) with no adverse effect to the sensor's calibration or other harm to the instrument. The sensor shall be of the wall-mounted or duct-mounted type, as required by the application, and shall be provided with any required accessories. Sensors used in duct high-limit applications shall have a bulk polymer resistive sensing element. Duct-mounted sensors shall be provided with a duct probe designed to protect the sensing element from dust accumulation and mechanical damage. Relative humidity (RH) sensors shall measure relative humidity over a range of 0% to 100% with an accuracy of +/- 3%. RH sensors shall function over a temperature range of 25 to 130 degrees F and shall not drift more than 2% per year.

2.8.4 Differential Pressure Instrumentation

2.8.4.1 Differential Pressure Sensors

Differential Pressure Sensor range shall be as shown or as required for the application. Pressure sensor ranges shall not exceed the high end range shown on the Points Schedule by more than 50%. The over pressure rating shall be a minimum of 150% of the highest design pressure of either input to the sensor. The accuracy shall be +/- 2% of full scale.

2.8.4.2 Differential Pressure Switch

The switch shall have a user-adjustable setpoint. The setpoint shall not be in the upper or lower quarters of the range. The over pressure rating shall be a minimum of 150% of the highest design pressure of either input to the sensor. The switch shall have two sets of contacts and each contact shall have a rating greater than it's connected load. Contacts shall open or close upon rise of pressure above the setpoint or drop of pressure below the setpoint as shown.

2.8.5 Flow Sensors

2.8.5.1 Airflow Measurement Array (AFMA)

a. Airflow Straightener.-AFMAs shall contain an airflow straightener if required by the AFMA manufacturer's published installation instructions. The straightener shall be contained inside a flanged sheet metal casing, with the AMFA located as specified according to the published recommendation of the AFMA manufacturer. In the absence of published documentation airflow straighteners shall be provided if there is any duct obstruction within 5 duct diameters upstream of the AFMA. Air-flow straighteners, where required, shall be constructed of 0.125 inch aluminum honeycomb and the depth of the straightener shall not be less than 1.5 inches.

b. Resistance to airflow.-The resistance to air flow through the AFMA, including the airflow straightener shall not exceed 0.08 inch water gauge at an airflow of 2,000 fpm. AFMA construction shall be suitable for operation at airflow's of up to 5,000 fpm over a temperature range of 40 to 120 degrees F.

c. Outside air temperature.-In outside air measurement or in low-temperature air delivery applications, the AFMA shall be certified by the manufacturer to be accurate as specified over a temperature range of -20 to

SECTION 23 09 23 Page 26 plus 120 degrees F. Moisture: 0 to 99% RH non condensing.

d. Pitot Tube AFMA.-Each Pitot Tube AFMA shall contain an array of velocity sensing elements. The velocity sensing elements shall be of the multiple pitot tube type with averaging manifolds. The sensing elements shall be distributed across the duct cross section in the quantity and pattern specified by the published installation instructions of the AFMA manufacturer.

(1) Pitot Tube AFMAs for use in airflow's over (3.0 m/s) 600 fpm shall have an accuracy of +/- 5% over a range of (2.5 to 12.5 m/s) 500 to 2,500 fpm.

(2) Pitot Tube AFMAs for use in airflow's under (3.0 m/s) 600 fpm shall have an accuracy of +/- 5% over a range of (0.6 to 12.5 m/s) 125 to 2,500 fpm.

e. Electronic AFMA.-Each electronic AFMA shall consist of an array of velocity sensing elements of the resistance temperature detector (RTD) or thermistor type. The sensing elements shall be distributed across the duct cross section in the quantity and pattern specified by the published application data of the AFMA manufacturer. Electronic AFMAs shall have an accuracy of +/- 3% percent over a range of 125 to 2,500 fpm and the output shall be temperature compensated over a range of 32 to 212 degrees F. Unless specified otherwise:

(1) Each electronic AFMA shall have transmitter fully independent of the sensor probes and will not require field matching to sensor probes.

(2) User display; pushbutton and LCD display for both field configuration and diagnostic modes.

(3)"Brownout" protection: "watchdog" reset circuit with protection against over voltage, over current, and surge.

2.8.5.2 Orifice Plate

Orifice plate shall be made of an austenitic stainless steel sheet of 0.125 inch nominal thickness with an accuracy of +/- 1% of full flow. The orifice plate shall be flat within 0.002 inches. The orifice surface roughness shall not exceed 20 micro-inches. The thickness of the cylindrical face of the orifice shall not exceed 2% of the pipe inside diameter or 12.5% of the orifice diameter, whichever is smaller. The upstream edge of the orifice shall be square and sharp. Where orifice plates are used, concentric orifice plates shall be used in all applications except steam flow measurement in horizontal pipelines.

2.8.5.3 Flow Nozzle

Flow nozzle shall be made of austenitic stainless steel with an accuracy of +/- 1% of full flow. The inlet nozzle form shall be elliptical and the nozzle throat shall be the quadrant of an ellipse. The thickness of the nozzle wall and flange shall be such that distortion of the nozzle throat from strains caused by the pipeline temperature and pressure, flange bolting, or other methods of installing the nozzle in the pipeline shall not cause the accuracy to degrade beyond the specified limit. The outside diameter of the nozzle flange or the design of the flange facing shall be such that the nozzle throat shall be centered accurately in the pipe.

SECTION 23 09 23 Page 27

2.8.56.4 Venturi Tube

Venturi tube shall be made of cast iron or cast steel and shall have an accuracy of +/- 1% of full flow. The throat section shall be lined with austenitic stainless steel. Thermal expansion characteristics of the lining shall be the same as that of the throat casting material. The surface of the throat lining shall be machined to a +/- 50 micro inch finish, including the short curvature leading from the converging entrance section into the throat.

2.8.5.5 Annular Pitot Tube

Annular pitot tube shall be made of austenitic stainless steel with an accuracy of +/- 2% of full flow and a repeatability of +/- 0.5% of measured value. The unit shall have at least one static port and no less than four total head pressure ports with an averaging manifold.

2.8.6 Electrical Instruments

Electrical Instruments shall have an input range as shown or sized for the application. Unless otherwise specified, AC instrumentation shall be suitable for 60 Hz operation.

2.8.6.1 Watt or Watthour Transducers

Watt transducers shall measure voltage and current and shall output kW, kWh, or kW and kWh as shown. kW outputs shall have an accuracy of +/- 0.25% over a power factor range of 0.1 to 1. kWh outputs shall be a pulse output and shall have an accuracy of +/- 0.5% over a power factor range of 0.1 to 1.

2.8.6.2 VACANT BY 88ABW/CEO

2.8.6.3 Current Transducers

Current transducers shall accept an AC current input and shall have an accuracy of +/- 2% of full scale. An integral power supply shall be provided if required for the analog output signal. The device shall have a means for calibration.

2.8.6.4 Current Sensing Relays (CSRs)

Current sensing relays (CSRs) shall provide a normally-open contact with a voltage and amperage rating greater than its connected load. Current sensing relays shall be of split-core design. The CSR shall be rated for operation at 200% of the connected load. Voltage isolation shall be a minimum of 600 volts. The CSR shall auto-calibrate to the connected load.

2.8.6.5 Voltage Transducers

Voltage transducers shall accept an AC voltage input and have an accuracy of +/- 0.25% of full scale. An integral power supply shall be provided if required for the analog output signal. The device shall have a means for calibration. Line side fuses for transducer protection shall be provided.

SECTION 23 09 23 Page 28

2.8.7 Occupancy Sensors

Occupancy sensors shall have occupancy-sensing sensitivity adjustment and an adjustable off-delay timer with a range encompassing 30 seconds to 15 minutes. Occupancy sensors shall be rated for operation in ambient air temperatures ranging from 40 to 95 degrees F or temperatures normally encountered in the installed location. Sensors integral to wall mount on-off light switches shall have an auto-off switch. Wall switch sensors shall be decorator style and shall fit behind a standard decorator type wall plate.

All occupancy sensors, power packs, and slave packs shall be UL listed. In addition to any outputs required for lighting control, the occupancy sensor shall provide a contact output rated at 1A at 24 Vac.

2.8.7.1 Passive Infrared (PIR) Occupancy Sensors

PIR occupancy sensors shall have a multi-level, multi-segmented viewing lens and a conical field of view with a viewing angle of 180 degrees and a detection of at least 20 feet unless otherwise shown or specified. PIR Sensors shall provide field-adjustable background light-level adjustment with an adjustment range suitable to the light level in the sensed area, room or space. PIR sensors shall be immune to false triggering from RFI and EMI.

2.8.7.2 Ultrasonic Occupancy Sensors

Ultrasonic sensors shall operate at a minimum frequency 32 kHz and shall be designed to not interfere with hearing aids.

2.8.7.3 Dual-Technology Occupancy Sensor (PIR and Ultrasonic)

Dual-Technology Occupancy Sensors shall meet the requirements of both PIR and Ultrasonic Occupancy Sensors.

2.8.8 Vibration Switch

Vibration switch shall be solid state, enclosed in a NEMA 250 Type 4 or Type 4X housing with sealed wire entry. Unit shall have two independent sets of Form C switch contacts with one set to shutdown equipment upon excessive vibration and a second set for monitoring alarm level vibration. The vibration sensing range shall be a true rms reading, suitable for the application. The unit shall include either displacement response for low speed or velocity response for high speed application. The frequency range shall be at least 2 Hz to 200 Hz. Contact time delay shall be 3 seconds.

The unit shall have independent start-up and running delay on each switch contact. Alarm limits shall be adjustable and setpoint accuracy shall be +/- 10% of setting with repeatability of plus or minus 2%.

2.8.9 Temperature Switch

2.8.9.1 Duct Mount Temperature Low Limit Safety Switch (Low Temperature Cutout)

Duct mount temperature low limit switches (LTC's) shall be manual reset, low temperature safety switches with a minimum element length of 1 foot/square-foot of coverage which shall respond to the coldest 18 inch

SECTION 23 09 23 Page 29 segment with an accuracy of +/- 3.6 degrees F. The switch shall have a field-adjustable setpoint with a range of at least 30 to 50 degrees F. The switch shall have two sets of contacts, and each contact shall have a rating greater than its connected load. Contacts shall open or close upon drop of temperature below setpoint as shown and shall remain in this state until reset.

a. Unless otherwise specified: Any air handler, fan coil unit, or makeup unit mounted more than 10 feet above floor level will have its manual reset located on the front of the associated control panel.

2.8.9.2 Pipe Mount Temperature Limit Switch (Aquastat)

Pipe mount temperature limit switches (aquastats) shall have a field adjustable setpoint between 60 and 90 degrees F, an accuracy of +/- 3.6 degrees F and a 10 degrees F fixed deadband. The switch shall have two sets of contacts, and each contact shall have a rating greater than its connected load. Contacts shall open or close upon change of temperature above or below setpoint as shown. Unless otherwise specified: Any air handler, fan coil unit, or makeup unit mounted more than 10 feet above floor level will have its manual reset on the control panel.

2.8.10 Damper End Switches

Each end switch shall be a hermetically sealed switch with a trip lever and over-travel mechanism. The switch enclosure shall be suitable for mounting on the duct exterior and shall permit setting the position of the trip lever that actuates the switch. The trip lever shall be aligned with the damper blade.

2.9 INDICATING DEVICES

All indicating devices shall display readings in English (inch-pound) units.

2.9.1 Thermometers

Thermometers shall not contain mercury. Unless otherwise specified, thermometers shall have an accuracy of +/- 3% of scale range. Thermometers shall have a range suitable for the application with an upper end of the range not to exceed 150% of the design upper limit.

2.9.1.1 Piping System Thermometers

Piping system thermometers shall have brass, malleable iron or aluminum alloy case and frame, clear protective face, permanently stabilized glass tube with indicating-fluid column, white face, black numbers, and a 9 inch scale.

Piping system thermometers shall have an accuracy of +/- 1% of scale range.

Thermometers for piping systems shall have rigid stems with straight, angular, or inclined pattern. Thermometer stems shall have expansion heads as required to prevent breakage at extreme temperatures. On rigid-stem thermometers, the space between bulb and stem shall be filled with a heat-transfer medium.

2.9.1.2 Air-Duct Thermometers

Air-duct thermometers shall have perforated stem guards and 45-degree adjustable duct flanges with locking mechanism.

2.9.2 Pressure Gauges

SECTION 23 09 23 Page 30

Gauges shall be suitable for field or panel mounting as required, shall have black legend on white background, and shall have a pointer traveling through a 270-degree arc. Gauge range shall be suitable for the application with an upper end of the range not to exceed 150% of the design upper limit.

Accuracy shall be +/- 3% of scale range. Gauges shall meet requirements of

ASME B40.100.

2.9.3 Low Differential Pressure Gauges

Gauges for low differential pressure measurements shall be a minimum of 3.5 inch (nominal) size with two sets of pressure taps, and shall have a diaphragm-actuated pointer, white dial with black figures, and pointer zero adjustment. Gauge range shall be suitable for the application with an upper end of the range not to exceed 150% of the design upper limit. Accuracy shall be plus or minus two percent of scale range.

2.10 OUTPUT DEVICES

Output Devices with SNVT input are ASCs and shall meet all ASC requirements in addition to the output device requirements. (Note: ASCs are specified in paragraph DIRECT DIGITAL CONTROL (DDC) HARDWARE.)

2.10.1 Actuators

Actuators shall be electric (electronic). All actuators shall be normally open (NO), normally closed (NC) or fail-in-last-position (FILP) as shown.

Normally open and normally closed actuators shall be of mechanical spring return type. Electric actuators shall have an electronic cut off or other means to provide burnout protection if stalled. Actuators shall have a visible position indicator. Electric actuators shall provide position feedback to the controller as shown. Actuators shall smoothly open or close the devices to which they are applied. Electric actuators shall have a full stroke response time in both directions of 90 seconds or less at rated load.

Electric actuators shall be of the foot-mounted type with an oil-immersed gear train or the direct-coupled type. Where multiple electric actuators operate from a common signal, the actuators shall provide an output signal identical to its input signal to the additional devices. Actuators used outdoors shall be designed and rated for outdoor use. Actuators under continuous exposure to water, such as those used in sumps, shall be submersible.

2.10.1.1 Valve Actuators

Valve actuators shall provide shutoff pressures and torques as shown on the Valve Schedule.

a. On applications typical in air handling units on heating or cooling coils, fan coil unit heating or cooling coils, unit ventilators, and VAV box reheat coils; Actuators shall be equipped with East-to-read position indicator, shows flow pattern for two and three way valves, manual override, protected terminal strip or plenum rated cable options, ambient temperature range 19 to 122 Deg F, NEMA 1 housing, housing rating UL94-5V(B), 24VAC/DC or 100-240 VAC where fail safe is required.

b. Dual mounted actuators using additional anti-rotation strap mechanical linkages, or special factory wiring to function are not acceptable. Actuators in a tandem pair must be "off the shelf," standard actuators ready for field wiring.

SECTION 23 09 23 Page 31

c. Damper and valve actuators will not produce more than 62 dB(A) when furnished with a mechanical fail-safe spring. Non-spring return actuators shall conform to a maximum noise rating of 45 dB(A) with power on or in the running or driving mode.

d. Actuators shall have electronic overload protection or digital rotation sensing circuitry to prevent actuator damage throughout the entire rotation. End switches to deactivate the actuator at the end rotation or magnetic clutches are not acceptable.

e. For power-failure/safety applications, an internal mechanical spring return mechanism shall be built into the actuator housing. Spring return actuators shall be capable of CW or CCW mounting orientation. Spring return models

f. Actuators using "on-board" chemical storage systems, capacitors, or other "on-board" non-mechanical forms of fail-safe operation are unacceptable.

g. Upon loss of control signal, a proportional actuator shall fail open or closed based on the minimum control signal. Upon loss of power, a nonspring return actuator shall maintain the last position.

h. Actuators shall be capable of being mechanically and electrically paralleled to increase torque if required. Valves and dampers requiring greater torque or higher close off may be assembled with multiple low torque actuators.

i. On applications for the High Temperature Hot Water Emergency Shutoff Valves (both Supply and Return); actuator shall be the Rotork Skilmatic 2-position (on/off control) electric quarter turn failsafe model SQ 405/406 or better. {see part 2.6.7.1 for valve requirements}

2.10.1.2 Damper Actuators

Damper actuators shall provide the torque necessary per damper manufacturer's instructions to modulate the dampers smoothly over its full range of operation and torque shall be at least 6 inch-pounds per 1 square foot of damper area for opposed blade dampers and 9 inch-pounds per 1 square foot of damper area for parallel blade dampers.

2.10.1.3 Positive Positioners

Positive positioners shall be a pneumatic relay with a mechanical position feedback mechanism and an adjustable operating range and starting point.

2.10.2 Relays

Control relay contacts shall have utilization category and ratings selected for the application, with a minimum of two sets of contacts enclosed in a dust proof enclosure. Each set of contacts shall incorporate a normally open (NO), normally closed (NC) and common contact. Relays shall be rated for a minimum life of one million operations. Operating time shall be 20 milliseconds or less. Relays shall be equipped with coil transient suppression devices to limit transients to 150% of rated coil voltage. All control panel general purpose relays shall have pilot light indicators.

SECTION 23 09 23 Page 32

2.11 USER INPUT DEVICES

User Input Devices, including potentiometers,…