Attachment 2 - V2_621-24-701_Specifications.pdf

621-24-701 | EHRM Infrastructure Upgrades James H. Quillen VAMC – Mountain Home, TN

Final Bid Documents

August 14, 2025

Specifications Sign and Seal: 08/14/2025

Tennessee Architectural Registration

No. 105620

Tennessee Engineer (Structural) Registration No. 122526

Oklahoma Engineer (Fire Protection) Registration

No. 34430

Tennessee Engineer (Mechanical) Registration No. 123862

Tennessee Engineer (Electrical) Registration No. 130235

American Board of Industrial Hygiene

No. 8594 CP

RCDD (Telecommunications) BICSI ID No.

328601

A | 312 SW 25th St. Oklahoma City, OK 73109 P | 405.842.6100 E | howdy@spur-design.com W | spur-design.com

621-24-701 EHRM Infrastructure Upgrades Tier 3 DC

Final Bid Documents

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TABLE OF CONTENTS

DEPARTMENT OF VETERANS AFFAIRS

VHA MASTER SPECIFICATIONS

TABLE OF CONTENTS

Section 00 01 10

SECTION NO DIVISION AND SECTION TITLES DATE

DIVISION 00 - SPECIAL SECTIONS

00 01 15 List of Drawing Sheets 05-20

00 10 11 Medical Center Requirements 01-23

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 General Requirements 11-21

01 32 16.15 Project Schedules (Small Projects – Design/Bid/Build) 01-24

01 33 23 Shop Drawings, Product Data, and Samples 11-23

01 35 26 Safety Requirements 05-24

01 42 19 Reference Standards 11-20

01 45 00 Quality Control 02-21

01 74 19 Construction Waste Management 04-22

01 81 13 Sustainable Construction Requirements 10-17

01 91 00 General Commissioning Requirements 04-22

DIVISION 02 – EXISTING CONDITIONS

02 41 00 Demolition 08-17

02 82 11 Traditional Asbestos Abatement 01-21

02 82 13.19 Asbestos Floor Tile and Mastic Abatement 01-21

DIVISIONS 03 AND 04 – NOT USED

DIVISION 05 – METALS

05 12 00 Structural Steel Framing 11-18

DIVISION 06 – WOOD, PLASTICS AND COMPOSITES

06 12 00 Structural Insulated Panel

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 01 50.19 Preparation for Re-Roofing 01-21

07 21 13 Thermal Insulation 01-21

07 60 00 Flashing and Sheet Metal 01-21

07 72 00 Roof Accessories 01-21

07 84 00 Firestopping 01-21

07 92 00 Joint Sealants 04-22

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TABLE OF CONTENTS

DIVISION 08 - OPENINGS

08 11 13 Hollow Metal Doors and Frames 01-21

08 14 00 Interior Wood Doors 01-21

08 71 00 Door Hardware 03-24

DIVISION 09 – FINISHES

09 05 16 Subsurface Preparation for Floor Finishes 01-21

09 22 16 Non-Structural Metal Framing 06-18

09 29 00 Gypsum Board 04-20

09 65 13 Resilient Base and Accessories 01-21

09 91 00 Painting 01-21

DIVISION 10 – SPECIALTIES

10 14 00 Signage 01-21

DIVISIONS 11 AND 12 – NOT USED

DIVISION 13 - SPECIAL CONSTRUCTION

13 05 41 Seismic Restraint Requirements for Non-Structural

Components

01-21

DIVISION 14– CONVEYING EQUIPEMENT – NOT USED

DIVISION 21- FIRE SUPPRESSION

21 13 13 Wet-Pipe Sprinkler Systems 06-15

21 22 00 Clean Agent Fire Suppression Systems 05-15

DIVISION 22 – PLUMBING – NOT USED

DIVISION 23 – HEATING, VENTILATING, AND AIR

CONDITIONING (HVAC)

23 05 11 Common Work Results for HVAC 03-23

23 05 41 Noise and Vibration Control for HVAC Piping and

Equipment

03-23

23 05 93 Testing, Adjusting, and Balancing for HVAC 03-23

23 07 11 HVAC and Boiler Plant Insulation 02-20

23 08 00 Commissioning of HVAC Systems 03-23

23 09 23 Direct-Digital Control System for HVAC 03-23

23 23 00 Refrigerant Piping 03-24

23 31 00 HVAC Ducts and Casings 03-23

23 37 00 Air Outlets and Inlets 03-23

23 81 23 Computer-Room Air-Conditioners 03-24

23 81 43 Air-Source Unitary Heat Pumps 03-23

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TABLE OF CONTENTS

DIVISION 25 – INTEGRATED AUTOMATION – NOT USED

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 11-22

26 05 19 Low-Voltage Electrical Power Conductors and Cables 11-22

26 05 26 Grounding and Bonding for Electrical Systems 11-22

26 05 33 Raceway and Boxes for Electrical Systems 11-22

26 05 39 Underfloor Raceways for Electrical Systems 11-22

26 08 00 Commissioning of Electrical Systems 11-22

26 09 23 Lighting Controls 11-22

26 22 00 Low-Voltage Transformers 11-22

26 24 16 Panelboards 11-22

26 25 11 Busways 11-22

26 25 11.01 Busway System in Computer Rooms

26 27 26 Wiring Devices 11-22

26 29 21 Enclosed Switches and Circuit Breakers 11-22

26 33 53 Static Uninterruptible Power Supply 11-22

26 36 23 Automatic Transfer Switches 11-22

26 41 00 Facility Lightning Protection 11-22

26 43 13 Surge Protective Devices 11-22

26 51 00 Interior Lighting 03-24

DIVISION 27 – COMMUNICATIONS

27 05 11 Requirements for Communications Installations 09-19

27 05 26 Grounding and Bonding for Communications Systems 06-15

27 05 33 Conduits and Backboxes for Communications Systems 12-22

27 05 36 Cable Trays for Communications Systems 12-22

27 05 53 Identification for Communications Systems 12-22

27 10 00 Structured Cabling 12-22

27 11 00 Telecommunications Room Fittings 06-15

27 11 16 Communications Cabinets, Racks, Frames, and Enclosures 12-22

27 11 19 Communications Termination Blocks and Patch Panels 12-22

27 11 26 Communications Rack Mounted Power Protection and Power

Strips

12-22

27 13 13 Communications Copper Backbone Cabling 12-22

27 13 23 Communications Optical Fiber Backbone Cabling 12-22

27 15 00 Communications Structured Cabling 01-16

27 15 23 Intercommunications and Program Systems 06-15

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 05 00 Common Work Results for Electronic Safety and Security 04-18

28 05 13 Conductors and Cables for Electronic Safety and

Security

10-18

28 05 26 Grounding and Bonding for Electronic Safety and

Security

09-11

28 05 28.33 Conduits and Backboxes for Electronic Safety and

Security

09-11

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TABLE OF CONTENTS

SECTION NO DIVISION AND SECTION TITLES DATE

28 13 00 Physical Access Control System 10-11

28 16 00 Intrusion Detection System 10-11

28 23 00 Video Surveillance 09-11

28 26 00 Electronic Personal Protection System 09-11

28 31 00 Fire Detection and Alarm 10-11

DIVISIONS 31 THROUGH 48 – NOT USED

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COMMISSIONING OF HVAC SYSTEMS

SECTION 23 08 00

COMMISSIONING OF HVAC SYSTEMS

PART 1 - GENERAL

1.1 DESCRIPTION

A. The requirements of this Section apply to all sections of Division 23.

B. This project will have selected building systems commissioned. The complete list of equipment and systems to be commissioned is specified in Section 01 91 00 GENERAL COMMISSIONING REQUIREMENTS. The commissioning process, which the Contractor is responsible to execute, is defined in Section 01 91 00 GENERAL COMMISSIONING REQUIRMENTS. A

Commissioning Agent (CxA) appointed by the VA will manage the commissioning process.

1.2 RELATED WORK

A. Section 01 00 00 GENERAL REQUIREMENTS.

B. Section 01 33 23 SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

C. Section 01 91 00 GENERAL COMMISSIONING REQUIREMENTS.

D. Section 23 05 41 NOISE AND VIBRATION CONTROL for HVAC PIPING AND

EQUIPMENT.

E. Section 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC.

F. Section 23 09 23 DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC.

1.3 SUMMARY

A. This Section includes requirements for commissioning the HVAC systems of the related subsystems and equipment. This Section supplements the general requirements specified in Section 01 91 00 GENERAL

COMMISSIONING REQUIREMENTS.

B. Refer to Section 01 91 00 GENERAL COMMISSIONING REQUIREMENTS for more details regarding processes and procedures as well as roles and responsibilities for all Commissioning Team members.

1.4 DEFINITIONS

A. Refer to Section 01 91 00 GENERAL COMMISSIONING REQUIREMENTS for definitions.

1.5 COMMISSIONED SYSTEMS

A. Commissioning of a system or systems specified in Division 23 is part of the construction process. Documentation and testing of these systems, as well as training of the VA’s Operation and Maintenance personnel in accordance with the requirements of Section 01 91 00

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COMMISSIONING OF HVAC SYSTEMS

GENERAL COMMISSIONING REQUIREMENTS and of Division 23, is required in cooperation with the VA and the Commissioning Agent.

B. The Facility HVAC systems commissioning will include the systems listed in Section 01 91 00 GENERAL COMMISSIONING REQUIREMENTS.

1.6 SUBMITTALS

A. The commissioning process requires review of selected Submittals that pertain to the systems to be commissioned. The Commissioning Agent will provide a list of submittals that will be reviewed by the

Commissioning Agent. This list will be reviewed and approved by the VA prior to forwarding to the Contractor. Refer to Section 01 33 23 SHOP

DRAWINGS, PRODUCT DATA, and SAMPLES for further details.

B. The commissioning process requires Submittal review simultaneously with engineering review. Specific submittal requirements related to the commissioning process are specified in Section 01 91 00 GENERAL

COMMISSIONING REQUIREMENTS.

1.7 APPLICABLE PUBLICATIONS

A. The following publications form a part of this specification to the extent indicated by the reference thereto. In text the publications are referenced to by the acronym of the organization.

B. Department of Veterans Affairs (VA):

PG 18-10 3-1-2024 HVAC Design Manual

C. American Society of Heating, Refrigerating and Air Conditioning

Engineers, Inc. (ASHRAE):

HANDBOOK 2019...........HVAC Applications ASHRAE Handbook, Chapter 39, Testing, Adjusting, and Balancing, Chapter 44, HVAC Commissioning and Chapter 49, Sound and

Vibration Control

HANDBOOK 2017...........HVAC Fundamentals ASHRAE Handbook, Chapter 8, Sound and Vibration

D. Associated Air Balance Council (AABC):

7th Edition 2016........AABC National Standards for Total System

Balance

E. National Environmental Balancing Bureau (NEBB):

9th Edition 2019........Procedural Standards for Testing, Adjusting, Balancing of Environmental Systems

3rd Edition 2015 .......Procedural Standards for the Measurement of

Sound and Vibration

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COMMISSIONING OF HVAC SYSTEMS

2nd Edition 2019 ... Standard for Whole Building Technical

Commissioning of New Construction

F. Sheet Metal and Air Conditioning Contractors National Association

(SMACNA):

0062006.................HVAC Duct Construction Standard – Metal and

Flexible Duct

3rd Edition 2005 ... HVAC Systems Testing, Adjusting and Balancing

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.1 CONSTRUCTION INSPECTIONS

A. Commissioning of HVAC systems will require inspection of individual elements of the HVAC systems construction throughout the construction period. The Contractor shall coordinate with the Commissioning Agent in accordance with Section 01 91 00 GENERAL COMMISSIONING REQUIREMENTS and the Commissioning plan to schedule HVAC systems inspections as required to support the Commissioning Process.

3.2 PRE-FUNCTIONAL CHECKLISTS

A. The Contractor shall complete Pre-Functional Checklists to verify systems, subsystems, and equipment installation is complete and systems are ready for Systems Functional Performance Testing. The

Commissioning Agent will prepare Pre-Functional Checklists to be used to document equipment installation. Refer to Sections 23 05 41 NOISE

AND VIBRATION CONTROL for HVAC PIPING AND EQUIPMENT, Section 23 05 93

TESTING, ADJUSTING, AND BALANCING FOR HVAC and Section 23 09 23 DIRECT-

DIGITAL CONTROL SYSTEM FOR HVAC requirements. The Contractor shall complete the checklists. Completed checklists shall be submitted to the VA and to the Commissioning Agent for review. The Commissioning

Agent may spot check a sample of completed checklists. If the

Commissioning Agent determines that the information provided on the checklist is not accurate, the Commissioning Agent will return the marked-up checklist to the Contractor for correction and resubmission.

If the Commissioning Agent determines that a significant number of completed checklists for similar equipment are not accurate, the

Commissioning Agent will select a broader sample of checklists for review. If the Commissioning Agent determines that a significant number of the broader sample of checklists is also inaccurate, all the checklists for the type of equipment will be returned to the Contractor

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COMMISSIONING OF HVAC SYSTEMS

for correction and resubmission. Refer to SECTION 01 91 00 GENERAL

COMMISSIONING REQUIREMENTS for submittal requirements for Pre-

Functional Checklists, Equipment Startup Reports, and other commissioning documents.

3.3 CONTRACTORS TESTS

A. Contractor tests as required by other sections of Division 23 shall be scheduled and documented in accordance with Section 01 00 00 GENERAL

REQUIREMENTS. All testing shall be incorporated into the project schedule. Contractor shall provide no less than 7 calendar days’ notice of testing. The Commissioning Agent will witness selected

Contractor tests at the sole discretion of the Commissioning Agent.

Contractor tests shall be completed prior to scheduling Systems

Functional Performance Testing.

3.4 SYSTEMS FUNCTIONAL PERFORMANCE TESTING:

A. The Commissioning Process includes Systems Functional Performance

Testing that is intended to test systems functional performance under steady state conditions, to test system reaction to changes in operating conditions, and system performance under emergency conditions. The Commissioning Agent will prepare detailed Systems

Functional Performance Test procedures for review and approval by the

Resident Engineer. The Contractor shall review and comment on the tests prior to approval. The Contractor shall provide the required labor, materials, and test equipment identified in the test procedure to perform the tests. The Commissioning Agent will witness and document the testing. The Contractor shall sign the test reports to verify tests were performed. See Section 01 91 00 GENERAL

COMMISSIONING REQUIREMENTS, for additional requirements.

3.5 TRAINING OF VA PERSONNEL

A. Training of the VA operation and maintenance personnel is required in cooperation with the Resident Engineer and Commissioning Agent.

Provide competent, factory authorized personnel to provide instruction to operation and maintenance personnel concerning the location, operation, and troubleshooting of the installed systems. Contractor shall submit training agendas and trainer resumes in accordance with the requirements of Section 01 91 00 GENERAL COMMISSIONING

REQUIREMENTS. The instruction shall be scheduled in coordination with the VA Resident Engineer after submission and approval of formal

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COMMISSIONING OF HVAC SYSTEMS

training plans. Refer to Section 01 91 00 GENERAL COMMISSIONING

REQUIREMENTS and Division 23 Sections for additional Contractor training requirements.

----- END -----

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

SECTION 23 09 23

DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

PART 1 - GENERAL

1.1 DESCRIPTION

General Contractor shall provide direct-digital control system(s) as indicated on the project documents, point list, interoperability tables, drawings and as described in these specifications. Include a complete and working direct-digital control system. Include all engineering, programming, configuration/setup hardware and software, controls and installation materials, installation labor, commissioning and startup, training, final project documentation and warranty. A System Integrator and Direct Digital

Controls Contractor shall be two separate direct subcontractors of General

Contractor.

1. The direct-digital control system(s) shall consist of high-speed, peer-to-peer network of DDC controllers, a control system server, all configuration and setup software and hardware devices, and an

Engineering Control Center. Provide a remote user using a standard

HTML 5 web browser to access the control system graphics and change adjustable setpoints with the proper password.

2. All new building controllers shall be native BACnet. All new BACnet workstations, controllers, devices and components shall be listed by

BACnet Testing Laboratories. All new BACnet workstations, controllers, devices and components shall be accessible using a

HTML5 Web browser interface. Browsers shall not require the use of an extension or add on software in order to access aforementioned workstations, controllers, devices, and components.

a. If used, gateways shall be BTL listed.

b. If used, gateways shall provide all object properties and read/write services shown on VA-approved interoperability schedules.

3. The work administered by this Section of the technical specifications shall include all labor, materials, special tools, equipment, enclosures, power supplies, software, software licenses, Project specific software configurations and database entries, interfaces, wiring, tubing, installation, labeling, engineering, Final Bid Documents

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

calibration, documentation, submittals, testing, verification, training services, permits and licenses, transportation, shipping, handling, administration, supervision, management, insurance, Warranty, specified services and any other items required for a complete and fully functional Controls System.

4. The control systems shall be designed such that each mechanical system shall operate under stand-alone mode. The A/E shall designate what each “mechanical systems” is composed of. The contractor administered by this Section of the technical specifications shall provide controllers for each mechanical system. In the event of a network communication failure, or the loss of any other controller, the control system shall continue to operate independently. Failure of the ECC shall have no effect on the field controllers, including those involved with global strategies.

5. The control system shall accommodate 1 2 Engineering Control

Center(s) and the control system shall accommodate 5 10 20 web-based Users simultaneously, and the access to the system should be limited only by operator password.

Some products are furnished but not installed by the contractor administered by this Section of the technical specifications. The contractor administered by this Section of the technical specifications shall formally coordinate in writing and receive from other contractors formal acknowledgements in writing prior to submission the installation of the products. These products include but are not limited to the following:

1. Control valves.

2. Flow switches.

3. Flow meters.

4. Sensor wells and sockets in piping.

5. Terminal unit controllers.

Some products are installed but not furnished by the contractor administered by this Section of the technical specifications. The contractor administered by this Section of the technical specifications shall formally coordinate in writing and receive from other contractors formal acknowledgements in writing prior to submission the procurement of the products. These products include but are not limited to the following:

1. Refrigerant leak detection system.

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

2. Factory-furnished accessory thermostats and sensors furnished with unitary equipment.

Some products are not provided by, but are nevertheless integrated with the work executed by, the contractor administered by this Section of the technical specifications. These products include but are not limited to the following:

1. Fire alarm systems. If zoned fire alarm is required by the project-specific requirements, this interface shall require multiple relays, which are provided and installed by the fire alarm system contractor, to be monitored.

2. Advanced utility metering systems. These systems may take information from the control system or its component meters and sensors.

3. Boiler and/or chiller controls. These controls, if not native

BACnet, will require a BACnet Gateway.

4. Terminal units’ velocity sensors

5. Condenser water quality systems: condenser water high- and low-parts hydrogen (pH) alarms.

6. Unitary HVAC equipment (rooftop air conditioning units, split systems, packaged pumping stations, ) controls. These include:

a. Discharge temperature control.

b. Economizer control.

c. Flowrate control.

d. Setpoint reset.

e. Time of day indexing.

f. Status alarm.

7. Steam trap monitoring system: Monitoring and alarms shall be connected to the ECC via BACnet.

8. Variable frequency drives. These controls, if not native BACnet, will require a BACnet Gateway.

9. The following systems have limited control (as individually noted below) from the ECC:

a. Constant temperature rooms: temperature out of acceptable range and status alarms.

b. Process and food service coolers, refrigerators and freezers: in patient nutrition kitchens, blood banks, mortuaries, and pharmacies: high temperature, trending and status alarms.

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

c. Medical gas systems (if not bottled at point of use): low pressure and status alarms.

d. Medical and dental vacuum systems: high pressure and status alarms.

e. Medical and dental compressed air systems: low pressure and status alarms.

f. Emergency generators: status alarms.

g. Domestic water heating systems: low temperature, high temperature and status alarms.

h. Pneumatic tube systems: status alarms.

i. Elevators: status alarms.

j. Building lighting systems: on/off and scene control.

k. Process conveyors: on/off control.

l. Stormwater removal pumps: status alarm.

m. Sanitary sewage pumps: status alarm.

n. Fume hoods and biological safety cabinets: status alarms

o. Isolation rooms: pressure outside of acceptable limit alarms.

Responsibility Table:

Work/Item/System Furnish Install Low

Voltage

Wiring

Line

Power

Control system low voltage and communication wiring

23 09 23 23 09 23 23 09 23 N/A

Terminal units 23 23 N/A 26

Controllers for terminal units

23 09 23 23 23 09 23 16

LAN conduits and raceway 23 09 23 23 09 23 N/A N/A

Automatic dampers (not furnished with equipment)

23 09 23 23 N/A N/A

Automatic damper actuators 23 09 23 23 09 23 23 09 23 23 09 23

Manual valves 23 23 N/A N/A

Automatic valves 23 09 23 23 23 09 23 23 09 23

Pipe insertion devices and taps, flow and pressure stations.

23 23 N/A N/A

Thermowells 23 09 23 23 N/A N/A

Current Switches 23 09 23 23 09 23 23 09 23 N/A

Control Relays 23 09 23 23 09 23 23 09 23 N/A

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

Work/Item/System Furnish Install Low

Voltage

Wiring

Line

Power

Power distribution system monitoring interfaces

23 09 23 23 09 23 23 09 23 26

Interface with chiller/boiler controls

23 09 23 23 09 23 23 09 23 26

Chiller/boiler controls interface with control system

23 23 23 09 23 26

All control system nodes, equipment, housings, enclosures and panels.

23 09 23 23 09 23 23 09 23 26

Smoke detectors 28 31 00 28 31 00 28 31 00 28 31 00

Fire/Smoke Dampers 23 23 28 31 00 28 31 00

Smoke Dampers 23 23 28 31 00 28 31 00

Fire Dampers 23 23 N/A N/A

Chiller/starter interlock wiring

N/A N/A 26 26

Chiller Flow Switches 23 23 23 N/A

Boiler interlock wiring 23 23 23 26

Boiler Flow Switches 23 23 23 N/A

Water treatment system 23 23 23 26

VFDs 23 26 23 09 23 26

Refrigerant monitors 23 23 09 23 23 09 23 26

Laboratory Environmental

Controls

23 09 23 23 09 23 23 09 23 26

Fume hood controls 23 09 23 23 09 23 23 09 23 26

Medical gas panels 23 23 26 26

Laboratory Air Valves 23 23 23 09 23 N/A

Computer Room A/C Unit field-mounted controls

23 23 26 26

Control system interface with CRU A/C controls

23 09 23 23 09 23 23 09 23 26

CRU A/C unit controls interface with control system

23 23 09 23 23 09 23 26

Fire Alarm shutdown relay interlock wiring

28 28 28 26

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

Work/Item/System Furnish Install Low

Voltage

Wiring

Line

Power

Control system monitoring of fire alarm smoke control relay

28 28 23 09 23 28

Fire-fighter’s smoke control station (FSCS

28 28 28 28

Fan Coil Unit controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Unit Heater controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Packaged RTU space-mounted controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Packaged RTU unit-mounted controls (not furnished with equipment)

23 09 23 23 09 23 23 09 23 26

Cooling Tower Vibration

Switches

23 23 23 09 23 23 09 23

Cooling Tower Level Control

Devices

23 23 23 09 23 23 09 23

Cooling Tower makeup water control devices

23 23 23 09 23 23 09 23

Starters, HOA switches 23 23 N/A 26

Steam Trap Monitoring in

Boiler Plant

23 21 11 23 21 11 26 26

Steam Trap Monitoring not in Boiler Plant

23 22 13 23 22 13 26 26

This facility’s existing direct-digital control (DDC) system is manufactured by , and its ECC is located at . The existing system’s top-end communications is via . The existing system’s ECC and controllers were installed in the year of . The contractor administered by this

Section of the technical specifications shall observe the capabilities, communication network, services, spare capacity of the existing control system and its ECC prior to beginning work.

1. Remove existing direct-digital control system ECC, communications network and controllers. Replace with new BACnet ECC, network and

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

controllers compliant with this Section of the technical specifications.

2. Provide a new BACnet ECC, communications network, and controllers.

Provide a programmable internetworking gateway allowing for real-time communication between the existing direct-digital control system and the new BACnet control system. Real-time communication shall provide all object properties and read/write services shown on

VA-approved interoperability schedules. The contractor administered by this Section of the technical specifications shall provide all necessary investigation and site-specific programming to execute the interoperability schedules.

a. The combined system shall operate and function as one complete system including one database of control point objects and global control logic capabilities. Facility operators shall have complete operations and control capability over all systems, new and existing including; monitoring, trending, graphing, scheduling, alarm management, global point sharing, global strategy deployment, graphical operations interface and custom reporting as specified.

b. The combined system shall operate and function as one complete system including one database of control point objects and global control logic capabilities. Facility operators shall have limited operations and control capability over the legacy systems, as described in the VA-approved interoperability schedules.

3. Upgrade the existing direct-digital control system’s ECC to include all properties and services required by an ASHRAE Standard 135

BACnet B-AWS Profile. The upgraded ECC shall continue to communicate with the existing direct-digital control system’s devices. The upgraded ECC shall communicate directly with the new native-BACnet devices over the existing control system’s communications network without the use of a gateway. Provide programming converting the existing non-BACnet devices, objects and services to ASHRAE Standard

135 BACnet-complaint BIBBs. The contractor administered by this

Section of the technical specifications shall provide all necessary

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

investigation and site-specific programming to execute the interoperability schedules.

a. The performance requirement for the combined system: the combined system shall operate and function as one complete system including one database of control point objects and global control logic capabilities. Facility operators shall have complete operations and control capability over all systems, new and existing including; monitoring, trending, graphing, scheduling, alarm management, global point sharing, global strategy deployment, graphical operations interface and custom reporting as specified.

b. The combined system shall operate and function as one complete system including one database of control point objects and global control logic capabilities. Facility operators shall have limited operations and control capability over the legacy systems as described in the VA-approved interoperability schedule.

4. Leave existing direct-digital control system intact and in place.

Provide a new ASHRAE Standard 135 BACnet-compliant ECC in the same room as the existing system’s ECC, and provide a new standalone

BACnet-compliant control system serving the work in this project. No interoperability is required.

This campus has standardized on an existing standard ASHRAE Standard

135, BACnet/IP Control System supported by a preselected controls service company. This entity is referred to as the “Control System Integrator” in this Section of the technical specifications. The Control system integrator is responsible for ECC system graphics and expansion. It also prescribes control system-specific commissioning/ verification procedures to the contractor administered by this Section of the technical specification. It lastly provides limited assistance to the contractor administered by this

Section of the technical specification in its commissioning/verification work.

1. The General Contractor of this project shall directly hire the

Control System Integrator in a contract separate from the contract procuring the controls contractor administered by this Section of the technical specifications.

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

2. The contractor administered by this Section of the technical specifications shall coordinate all work with the Control System

Integrator. The contractor administered by this Section of the technical specifications shall integrate the ASHRAE Standard 135, BACnet/IP control network(s) with the Control System Integrator’s B-

AWS through an Ethernet connection provided by either the Control

System Integrator or VA.

3. The contractor administered by this Section of the technical specifications shall provide a peer-to-peer networked, stand-alone, distributed control system. This direct digital control (DDC) system at least shall include one portable operator terminal - laptop, one digital display unit, microprocessor-based controllers, instrumentation, end control devices, wiring, piping, software, and related systems. This contractor is responsible for all device mounting and wiring.

4. Responsibility Table:

Item/Task Section

23 09 23 contactor

Control system integrator

VA

ECC expansion X

ECC programming X

Devices, controllers, control panels and equipment

X

Point addressing: all hardware and software points including setpoint, calculated point, data point(analog/ binary), and reset schedule point

X

Point mapping X

Network Programming X

ECC Graphics X

Controller programming and sequences X

Integrity of LAN communications X

Electrical wiring X

Operator system training X

LAN connections to devices X

LAN connections to ECC X

IP addresses X

Overall system verification (Cx) X

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DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC

Controller and system verification X

Unitary standalone systems including Unit Heaters, Cabinet Unit

Heaters, Fan Coil Units, Base Board Heaters, thermal comfort ventilation fans, and similar units for control of room environment conditions may be equipped with integral controls furnished and installed by the equipment manufacturer or field mounted. Refer to equipment specifications and as indicated in project documents. Application of standalone unitary controls is limited to at least those systems wherein remote monitoring, alarm and startup are not necessary. Examples of such systems include:

1. Light-switch-operated toilet exhaust

2. Vestibule heater

3. Exterior stair heater

4. Attic heating and ventilation

5. Mechanical or electrical room heating and ventilation.

The direct-digital control system shall start and stop equipment, move

(position) damper actuators and valve actuators, and vary speed of equipment to execute the mission of the control system. Use electricity as the motive force for all damper and valve actuators, unless use of pneumatics as motive force is specifically granted in writing by the VA.

1.2 RELATED WORK

Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUIREMENTS.

Section 23 31 00, HVAC Ducts and Casings.

Section 23 81 00, Decentralized Unitary HVAC Equipment.

Section 23 81 23, Computer-Room Air-Conditioners.

Section 26 05 11, Requirements for Electrical Installations.

Section 26 05 21, Low-Voltage Electrical Power Conductors and Cables

(600 Volts and Below).

Section 26 05 26, Grounding and Bonding for Electrical Systems.

Section 26 05 33, Raceway and Boxes for Electrical Systems.

Section 26 09 23, Lighting Controls.

Section 26 27 26, Wiring Devices.

Section 28 31 00, Fire Detection and Alarm.

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1.3 DEFINITION

Algorithm: A logical procedure for solving a recurrent mathematical problem; A prescribed set of well-defined rules or processes for the solution of a problem in a finite number of steps.

Analog: A continuously varying signal value (e.g., temperature, current, velocity etc.

BACnet: A Data Communication Protocol for Building Automation and

Control Networks -as defined by ANSI/ASHRAE Standard 135. This communications protocol allows diverse building automation devices to communicate data and services over a network.

BACnet/IP: Annex J of Standard 135. It defines and allows for using a reserved UDP socket to transmit BACnet messages over IP networks. A BACnet/IP network is a collection of one or more IP sub-networks that share the same

BACnet network number.

BACnet Internetwork: Two or more BACnet networks connected with routers. The two networks may use different LAN technologies.

BACnet Network: One or more BACnet segments that have the same network address and are interconnected by bridges at the physical and data link layers.

BACnet Segment: One or more physical segments of BACnet devices on a

BACnet network, connected at the physical layer by repeaters.

BACnet Broadcast Management Device (BBMD): A communications device which broadcasts BACnet messages to all BACnet/IP devices and other BBMDs connected to the same BACnet/IP network.

BACnet Interoperability Building Blocks (BIBBs): BACnet

Interoperability Building Blocks (BIBBs) are collections of one or more

BACnet services. These are prescribed in terms of an "A" and a "B" device.

Both of these devices are nodes on a BACnet internetwork.

BACnet Testing Laboratories (BTL). The organization responsible for testing products for compliance with the BACnet standard, operated under the direction of BACnet International.

Baud: It is a signal change in a communication link. One signal change can represent one or more bits of information depending on type of transmission scheme. Simple peripheral communication is normally one bit per

Baud. (e.g., Baud rate = 78,000 Baud/sec is 78,000 bits/sec, if one signal change = 1 bit).

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

BMP or bmp: Suffix, computerized image file, used after the period in a

DOS-based computer file to show that the file is an image stored as a series of pixels.

Bus Topology: A network topology that physically interconnects workstations and network devices in parallel on a network segment.

Control Unit (CU): Generic term for any controlling unit, stand-alone, microprocessor based, digital controller residing on secondary LAN or Primary

LAN, used for local controls or global controls

Deadband: A temperature range over which no heating or cooling is supplied, i.e., 22-25 degrees C (72-78 degrees F), as opposed to a single point change over or overlap).

Device: a control system component that contains a BACnet Device Object and uses BACnet to communicate with other devices.

Device Object: Every BACnet device requires one Device Object, whose properties represent the network visible properties of that device. Every

Device Object requires a unique Object Identifier number on the BACnet internetwork. This number is often referred to as the device instance.

Device Profile: A specific group of services describing BACnet capabilities of a device, as defined in ASHRAE Standard 135, Annex L.

Standard device profiles include BACnet Operator Workstations (B-OWS), BACnet

Building Controllers (B-BC), BACnet Advanced Application Controllers (B-AAC), BACnet Application Specific Controllers (B-ASC), BACnet Smart Actuator (B-

SA), and BACnet Smart Sensor (B-SS). Each device used in new construction is required to have a PICS statement listing which service and BIBBs are supported by the device.

Diagnostic Program: A software test program, which is used to detect and report system or peripheral malfunctions and failures. Generally, this system is performed at the initial startup of the system.

Direct Digital Control (DDC): Microprocessor based control including

Analog/Digital conversion and program logic. A control loop or subsystem in which digital and analog information is received and processed by a microprocessor, and digital control signals are generated based on control algorithms and transmitted to field devices in order to achieve a set of predefined conditions.

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Distributed Control System: A system in which the processing of system data is decentralized and control decisions can and are made at the subsystem level. System operational programs and information are provided to the remote subsystems and status is reported back to the Engineering Control Center.

Upon the loss of communication with the Engineering Control center, the subsystems shall be capable of operating in a stand-alone mode using the last best available data.

Download: The electronic transfer of programs and data files from a central computer or operation workstation with secondary memory devices to remote computers in a network (distributed) system.

DXF: An AutoCAD 2-D graphics file format. Many CAD systems import and export the DXF format for graphics interchange.

Electrical Control: A control circuit that operates on line or low voltage and uses a mechanical means, such as a temperature sensitive bimetal or bellows, to perform control functions, such as actuating a switch or positioning a potentiometer.

Electronic Control: A control circuit that operates on low voltage and uses a solid-state components to amplify input signals and perform control functions, such as operating a relay or providing an output signal to position an actuator.

Engineering Control Center (ECC): The centralized control point for the intelligent control network. The ECC comprises of personal computer and connected devices to form a single workstation.

Ethernet: A trademark for a system for exchanging messages between computers on a local area network using coaxial, fiber optic, or twisted-pair cables.

Firmware: Firmware is software programmed into read only memory (ROM) chips. Software may not be changed without physically altering the chip.

Gateway: Communication hardware connecting two or more different protocols. It translates one protocol into equivalent concepts for the other protocol. In BACnet applications, a gateway has BACnet on one side and non-

BACnet (usually proprietary) protocols on the other side.

GIF: Abbreviation of Graphic interchange format.

Graphic Program (GP): Program used to produce images of air handler systems, fans, chillers, pumps, and building spaces. These images can be animated and/or color-coded to indicate operation of the equipment.

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Graphic Sequence of Operation: It is a graphical representation of the sequence of operation, showing all inputs and output logical blocks.

I/O Unit: The section of a digital control system through which information is received and transmitted. I/O refers to analog input (AI, digital input (DI), analog output (AO) and digital output (DO). Analog signals are continuous and represent temperature, pressure, flow rate etc., whereas digital signals convert electronic signals to digital pulses

(values), represent motor status, filter status, on-off equipment etc.

I/P: a method for conveying and routing packets of information over LAN paths. User Datagram Protocol (UDP) conveys information to “sockets” without confirmation of receipt. Transmission Control Protocol (TCP) establishes

"sessions", which have end-to-end confirmation and guaranteed sequence of delivery.

JPEG: A standardized image compression mechanism stands for Joint

Photographic Experts Group, the original name of the committee that wrote the standard.

Local Area Network (LAN): A communication bus that interconnects operator workstation and digital controllers for peer-to-peer communications, sharing resources and exchanging information.

Network Repeater: A device that receives data packet from one network and rebroadcasts to another network. No routing information is added to the protocol.

MS/TP: Master-slave/token-passing (ISO/IEC 8802, Part 3). It uses twisted-pair wiring for relatively low speed and low cost communication.

Native BACnet Device: A device that uses BACnet as its primary method of communication with other BACnet devices without intermediary gateways. A system that uses native BACnet devices at all levels is a native BACnet system.

Network Number: A site-specific number assigned to each network segment to identify for routing. This network number must be unique throughout the

BACnet internetwork.

Object: The concept of organizing BACnet information into standard components with various associated properties. Examples include analog input objects and binary output objects.

Object Identifier: An object property used to identify the object, including object type and instance. Object Identifiers must be unique within a device.

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Object Properties: Attributes of an object. Examples include present value and high limit properties of an analog input object. Properties are defined in ASHRAE 135; some are optional and some are required. Objects are controlled by reading from and writing to object properties.

Operating system (OS): Software, which controls the execution of computer application programs.

PCX: File type for an image file. When photographs are scanned onto a personal computer they can be saved as PCX files and viewed or changed by a special application program as Photo Shop.

Peripheral: Different components that make the control system function as one unit. Peripherals include monitor, printer, and I/O unit.

Peer-to-Peer: A networking architecture that treats all network stations as equal partners- any device can initiate and respond to communication with other devices.

PICS: Protocol Implementation Conformance Statement, describing the

BACnet capabilities of a device. All BACnet devices have published PICS.

PID: Proportional, integral, and derivative control, used to control modulating equipment to maintain a setpoint.

Repeater: A network component that connects two or more physical segments at the physical layer.

Router: a component that joins together two or more networks using different LAN technologies. Examples include joining a BACnet Ethernet LAN to a BACnet MS/TP LAN.

Sensors: devices measuring state points or flows, which are then transmitted back to the DDC system.

Thermostats : devices measuring temperatures, which are used in control of standalone or unitary systems and equipment not attached to the DDC system.

1.4 QUALITY ASSURANCE

Criteria:

1. Single Source Responsibility of subcontractor: Either the DDC

Contractor or the System Integrator shall obtain hardware and software supplied under this Section and delegate the responsibility to a single source controls installation subcontractor. The

Integration subcontractor shall be responsible for the complete design, installation, integration, and commissioning of the system.

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installation and service of such building automation control systems similar in size and complexity.

2. Equipment and Materials: Equipment and materials shall be cataloged products of manufacturers regularly engaged in production and installation of HVAC control systems. Products shall be manufacturer’s latest standard design and have been tested and proven in actual use.

3. The controls subcontractor shall provide a list of no less than five similar projects which have building control systems as specified in this Section. These projects must be on-line and functional such that the Department of Veterans Affairs (VA) representative could observe the control systems in full operation.

4. The controls subcontractor shall have an in-place facility within 50

100 miles with technical staff, spare parts inventory for the next five (5) years, and necessary test and diagnostic equipment to support the control systems.

5. The controls subcontractor shall have minimum of three years of experience in design and installation of building automation systems similar in performance to those specified in this Section. Provide evidence of experience by submitting resumes of the project manager, the local branch manager, project engineer, the application engineering staff, and the electronic technicians who would be involved with the supervision, the engineering, and the installation of the control systems. Training and experience of these personnel shall not be less than three years. Failure to disclose this information will be a ground for disqualification of the supplier.

6. Provide a competent and experienced Project Manager employed by the

Controls Contractor. The Project Manager shall be supported as necessary by other Contractor employees in order to provide professional engineering, technical and management service for the work. The Project Manager shall attend scheduled Project Meetings as required and shall be empowered to make technical, scheduling and related decisions on behalf of the Controls Contractor.

Codes and Standards:

1. All work shall conform to the applicable Codes and Standards.

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2. Electronic equipment shall conform to the requirements of FCC

Regulation, Part 15, Governing Radio Frequency Electromagnetic

Interference, and be so labeled.

1.5 PERFORMANCE

The system shall conform to the following:

1. Graphic Display: The system shall display up to four (4) graphics on a single screen with a minimum of twenty (20) dynamic points per graphic. All current data shall be displayed within ten (10) seconds of the request.

2. Graphic Refresh: The system shall update all dynamic points with current data within eight (8) seconds. Data refresh shall be automatic, without operator intervention.

3. Object Command: The maximum time between the command of a binary object by the operator and the reaction by the device shall be two(2) seconds. Analog objects shall start to adjust within two (2) seconds.

4. Object Scan: All changes of state and change of analog values shall be transmitted over the high-speed network such that any data used or displayed at a controller or work-station will be current, within the prior six (6) seconds.

5. Alarm Response Time: The maximum time from when an object goes into alarm to when it is annunciated at the workstation shall not exceed

(10) seconds.

6. Program Execution Frequency: Custom and standard applications shall be capable of running as often as once every (5) seconds. The

Contractor shall be responsible for selecting execution times consistent with the mechanical process under control.

7. Multiple Alarm Annunciations: All workstations on the network shall receive alarms within five (5) seconds of each other.

8. Performance: Programmable Controllers shall be able to execute DDC

PID control loops at a selectable frequency from at least once every one (1) second. The controller shall scan and update the process value and output generated by this calculation at this same frequency.

9. Reporting Accuracy: Listed below are minimum acceptable reporting end-to-end accuracies for all values reported by the specified system:

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Measured Variable Reported Accuracy

Space temperature ±0.5 degrees C (±1 degrees F)

Ducted air temperature ±0.5 degrees C [±1 degrees F]

Outdoor air temperature ±1.0 degrees C [±2 degrees F]

Dew Point ±1.5 degrees C [±3 degrees F]

Water temperature ±0.5 degrees C [±1 degrees F]

Relative humidity ±2 percent RH

Water flow ±1 percent of reading

Air flow (terminal) ±10 percent of reading

Air flow (measuring stations) ±5 percent of reading

Carbon Monoxide (CO) ±5 percent of reading

Carbon Dioxide (CO2) ±50 ppm

Air pressure (ducts) ±25 Pa [±0.1 inch wg]

Air pressure (space) ±0.3 Pa [±0.001 inch wg]

Water pressure ±2 percent of full scale *Note 1

Electrical Power ±0.5 percent of reading

Note 1: for both absolute and differential pressure

10. Control stability and accuracy: Control sequences shall maintain measured variable at setpoint within the following tolerances:

Controlled Variable Control Accuracy Range of Medium

Air Pressure ±50 Pa (±0.2 inch wg)

0–1.5 kPa (0–6 inch wg)

Air Pressure ±3 Pa (±0.01 inch wg) -25 to 25 Pa

(-0.1 to 0.1 inch wg)

Airflow ±10 percent of full scale

Space Temperature ±1.0ºC (±2.0 degrees F)

Duct Temperature ±1.5ºC (±3 degrees F)

Humidity ±5 percent RH MRI, SPS, PHARMACY

Fluid Pressure ±10 kPa (±1.5 psig)

0–1 MPa (1–150 psig)

Fluid Pressure ±250 Pa (±1.0 inch wg) 0–12.5 kPa

(0–50 inch wg) differential

11. Extent of direct digital control: control design shall allow for at least the points indicated on the points lists on the drawings.

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1.6 WARRANTY

Labor and materials for control systems shall be warranted for a period as specified under Warranty in FAR clause 52.246-21.

Control system failures during the warranty period shall be adjusted, repaired, or replaced at no cost or reduction in service to the owner. The system includes all computer equipment, transmission equipment, and all sensors and control devices.

The on-line support service shall…