Amendment One.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6) CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) 9A. AMENDMENT OF SOLICITATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended, is not extended.

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or

(c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print) 16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA

BY

(Signature of Contracting Officer)

16C. DATE SIGNED

PREVIOUS EDITION UNUSABLE STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

This form was electronically produced by USDA/ARS/OCIO/ADB.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date,etc.)

SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

J 1 28

Amendment 1 03/08/2010

USDA-ARS-MWA

1815 N. University Street Peoria, IL 61604

Same as Block 6

AG-5114-S-10-AA06

02/13/2010

N/A

RECOVERY-DFRC-Repair Mechanical Systems; CCRU-Repair Greenhouse Cooling System, Madison, WI

Page Two through Twenty-five reflects revisions and additions to the specifications and drawings.

Page Twenty-six through Twenty-seven includes questions and answers.

Page Twenty-eight - Add to Section I and Section M: Option clauses - See attached Page Twenty-eight.

This amendment becomes part of the contract documents.

ADDENDUM NO. 1

ISMAILI JAMATKHANA

ADDENDUM NO. 1

ISSUE DATE: March 8, 2010

PROJECT: 0413-08-11 DFRC & CCRU Repair Mechanical Systems

TO: USDA

FROM: Bailey Edward Design, Inc., Architect; Chicago, IL KJWW, Mechanical Engineer, Madison, WI

This addendum modifies the final submittal document issued on Thursday February 11, 2010.

Changes:

1. The specification TOC was revised to reflect the addition of specification section 23 09 00.

2. Drawing MP204 - Revise location of DHWHX-1, as part of Bid Option#1. Refer to revised

MP204 drawing.

3. Drawing M230 - Add Keynote 7 to steam coils in AHU-1, as part of Bid Option#2. Add

Keynote 8 to traps associated with steam coils in AHU-1, as part of Bid Option#2. Refer to revised M230 drawing.

4. Drawing M250 - Revise chilled water coil installation detail as part of Bid Option#2 and water heater piping detail as part of Bid Option#1. Refer to revised M250 drawing.

Additions:

1. Specification section 23 09 00 Controls has been added to the original specifications.

United States Department of Agriculture` USDA Task Order No. AG-5114-D-09-0083

Contract No: 53-3K15-4-1500

USDA-ARS Madison, WI Dairy Forage Research Center & Cereal Crops Research Unit

Table of Contents

Specifications

Division 01 – General Requirements

Section 01 00 00 General Requirements

Division 22 – Plumbing

Section 22 05 00 Basic Plumbing Requirements

Section 22 05 05 Plumbing Demolition for Remodeling

Section 22 05 29 Plumbing Supports and Anchors

Section 22 09 00 Instrumentation

Section 22 10 00 Plumbing Piping

Section 22 30 00 Plumbing Equipment

Division 23 – HVAC

Section 23 05 00 Basic HVAC Requirements

Section 23 05 03 Through Penetration Firestopping

Section 23 05 05 HVAC Demolition for Remodeling

Section 23 05 29 HVAC Supports and Anchors

Section 23 05 53 HVAC Identification

Section 23 05 93 Testing, Adjusting and Balancing

Section 23 07 13 Ductwork Insulation

Section 23 07 19 HVAC Piping Insulation

Section 23 09 00 Controls

Section 23 09 13 Instrumentation

Section 23 21 00 Hydronic Piping

Section 23 22 00 Steam and Steam Condensate Piping

Section 23 22 18 Steam and Steam Condensate Specialties

Section 23 31 00 Ductwork

United States Department of Agriculture` USDA Task Order No. AG-5114-D-09-0083

Contract No: 53-3K15-4-1500

USDA-ARS Madison, WI Dairy Forage Research Center & Cereal Crops Research Unit

Section 23 33 00 Ductwork Accessories

Section 23 57 00 Heat Exchangers

Section 23 82 00 Terminal Heat Transfer Units

Section 23 82 16 Air Coils

Division 26 – Electrical

Section 26 05 00 Basic Electrical Requirements

Section 26 05 05 Electrical Demolition for Remodeling

Section 26 05 13 Wire and Cable

Section 26 05 31 Boxes

Section 26 05 33 Conduit

Section 26 05 53 Electrical Identification

END OF TOC

USDA-ARS, Madison, WI 23 09 00 - 1 Bailey Edward Project Number: 0413-08-11

SECTION 23 09 00

CONTROLS

TABLE OF CONTENTS

PART 1 - GENERAL

1.1 SECTION INCLUDES

1.2 PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

1.3 REFERENCES

1.4 AGENCY AND CODE APPROVALS

1.5 ACRONYMS

1.6 SUMMARY

1.7 SYSTEM DESCRIPTION

1.8 SUBMITTALS

1.9 SOFTWARE LICENSE AGREEMENT

1.10 DELIVERY, STORAGE AND HANDLING

1.11 JOB CONDITIONS

1.12 QUALITY ASSURANCE

1.13 WARRANTY

1.14 WARRANTY ACCESS

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

2.2 CONTROL DAMPERS

2.3 DAMPER ACTUATORS

2.4 HYDRONIC CONTROL VALVES

2.5 VALVE ACTUATORS

2.6 VALVE SCHEDULE

2.7 CONTROL INSTRUMENTATION

2.8 WIRING, CABLE, AND RACEWAYS

PART 3 - EXECUTION

3.1 GENERAL INSTALLATION

3.2 CONDUIT, WIRING, AND CABLE INSTALLATION

3.3 DDC INSTALLATION

3.4 COMMISSIONING

3.5 PREPARATION FOR BALANCING

3.6 TEST AND BALANCE COORDINATION

3.7 DEMONSTRATION AND ACCEPTANCE

3.8 INSTALLATION OF SENSORS

USDA-ARS, Madison, WI 23 09 00 - 2

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Complete System of Automatic Controls.

B. Control Devices, Components, Wiring and Material.

C. Instructions for Owners.

D. Remodeling.

1.2 PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

A. Control Valves.

B. Flow Switches.

C. Temperature Sensor Sockets.

D. Gauge Taps.

E. Automatic Dampers.

F. Flow Meters.

1.3 REFERENCES

A. AMCA 500 - Test Methods for Louvers, Dampers and Shutters.

B. ANSI/ASHRAE Standard 135-2001: BACnet® – A Data Communication Protocol for Building Automation and Control Networks, including all amendments.

C. ANSI/NEMA 250 - Enclosures for Electrical Equipment (1000 volts Maximum).

D. ANSI/NFPA 70 - National Electrical Code.

E. ANSI/NFPA 90A - Installation of Air-Conditioning and Ventilation Systems.

F. ASHRAE 62.1 – Ventilation for Acceptable Indoor Air Quality.

G. ASHRAE 85 - Automatic Control Terminology for Heating, Ventilating, Air Conditioning.

H. ASHRAE 90.1 – Energy Standard for Buildings Except Low-Rise Residential Buildings.

1.4 AGENCY AND CODE APPROVALS

A. All products shall have the following agency approvals. Provide verification that the approvals exist for all submitted products with the submittal package.

1. UL-916; Energy Management Systems.

2. C-UL listed to Canadian Standards Association C22.2 No. 205-M1983 “Signal

Equipment.”

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

4. FCC, Part 15, Subpart J, Class A Computing Devices.

1.5 ACRONYMS

A. Acronyms used in this specification are as follows:

1. B-AAC BACnet Advanced Application Controller.

2. B-ASC BACnet Application Specific Controller.

3. BTL BACnet Testing Laboratories.

4. DDC Direct Digital Controls.

5. FMCS Facility Management and Control System.

USDA-ARS, Madison, WI 23 09 00 - 3

6. GUI Graphic User Interface.

7. IBC Interoperable BACnet Controller.

8. IDC Interoperable Digital Controller.

9. LAN Local Area Network.

10. NAC Network Area Controller.

11. ODBC Open DataBase Connectivity.

12. OOT Object Oriented Technology.

13. OPC Open Connectivity via Open Standards.

14. PICS Product Interoperability Compliance Statement.

15. PMI Power Measurement Interface.

16. POT Portable Operator’s Terminal.

17. TCS Temperature Control System.

18. WAN Wide Area Network.

19. WBI Web Browser Interface.

1.6 SUMMARY

A. All labor, material, equipment and software not specifically referred to herein or on the plans that are required to meet the intent of this specification shall be provided without additional cost to the Owner.

B. The Owner shall be the named license holder of all software associated with any and all incremental work on the project.

1.7 SYSTEM DESCRIPTION

A. The entire TCS shall be comprised of a network of interoperable, standalone digital controllers communicating via the following protocol to an NAC. Temperature Control System products shall be as specified below.

B. Provide materials and labor necessary to connect factory supplied control components.

C. Provide central and remote hardware, software, and interconnecting wire and conduit.

1.8 SUBMITTALS

A. Equipment Coordination:

1. The Contractor shall obtain approved equipment submittals from other Subcontractors to determine equipment wiring connections, to choose appropriate controllers, and to provide programming.

2. Coordinate the control interface of all equipment with the equipment manufacturers prior to submittal submission.

B. Shop Drawings:

1. Submit shop drawings per Section 23 05 00. In addition, submit an electronic copy of the shop drawings in Adobe Acrobat (.pdf) format to the Owner for review.

2. Cross-reference all control components and point names in a single table located at the beginning of the submittal with the identical nomenclature used in this section.

3. Submittal shall also include a trunk cable schematic diagram depicting operator workstations, control panel locations and a description of the communication type, media and protocol.

USDA-ARS, Madison, WI 23 09 00 - 4

4. Diagrams shall include:

a. Schematic diagrams for all field sensors and controllers.

b. A schematic diagram of each controlled system. The schematics shall have all control points labeled. The schematics shall graphically show the location of all control elements in the system.

c. A tabular instrumentation list for each controlled system. The table shall show element name, type of device, manufacturer, model number and product data sheet number.

d. All installation details and any other details required to demonstrate that the system will function properly.

e. All interface requirements with other systems.

5. Sequences: Submit a complete description of the operation of the control system, including sequences of operation. The description shall include and reference a schematic diagram of the controlled system. The wording of the control sequences in the submittal shall match verbatim that included in the construction documents to ensure there are no sequence deviations from that intended by the Engineer. Clearly highlight any deviations from the specified sequences on the submittals.

6. Points List Schedule: Submit a complete points list of all points to be connected to the TCS and FMCS. The points list for each system controller shall include both inputs and outputs (I/O), point number, the controlled device associated with the I/O point, the location of the I/O device, and reference drawings. Where a control point is the same as that shown on the control system schematic, label it with the same name. Points list shall specifically identify alarms, trends, event history, archive, totalization, graphic points, and all mapped points from other systems (security systems, lighting control, fire alarm, etc.). Provide points lists, point naming convention, and factory support information for systems provided and integrated into the FMCS.

7. Damper Schedule: Schedule shall include a separate line for each damper and a column for each of the damper attributes:

a. Damper Identification Tag.

b. Location.

c. Damper Type.

d. Damper Size.

e. Duct Size.

f. Arrangement.

g. Blade Type.

h. Velocity.

i. Pressure Drop.

j. Fail Position.

k. Actuator Identification Tag.

l. Actuator Type.

m. Mounting.

8. Product Data Sheets: Required for each component that includes: unique identification tag that is consistent throughout the submittal, manufacturer’s description, technical data, performance curves, installation/maintenance instructions, and other relevant items. When manufacturer’s literature applies to a product series rather than a specific product, the data specifically applicable to the project shall be highlighted or clearly indicated by other means. Each

USDA-ARS, Madison, WI 23 09 00 - 5 submitted piece of literature and drawings shall clearly reference the specification and/or drawing that the submittal is to cover. General catalogs shall not be accepted as cutsheets to fulfill submittal requirements.

9. Control System Demonstration and Acceptance: Provide a description of the proposed process, along with all reports and checklists to be used.

10. Clearly identify work by others in the submittal.

11. Quantities of items submitted may be reviewed but are the responsibility of the Contractor to verify.

C. Operation and Maintenance Manual:

1. In addition to the requirements of Section 23 05 00, submit an electronic copy of the O&M manuals in PDF format.

2. Provide three complete sets of manuals.

3. Each O&M manual shall include:

a. Table of contents with indexed tabs dividing information as outlined below.

b. Definitions: List of all abbreviations and technical terms with definitions.

c. Warranty Contacts: Names, addresses, and 24-hour telephone numbers of Contractors installing equipment and controls and service representatives of each.

d. Licenses, Guarantees, and Warranties: Provide documentation for all equipment and systems.

e. System Components: Alphabetical list of all system components, with the name, address, and telephone number of the vendor.

D. Training Manual:

1. Provide a course outline and training manuals for each training class.

E. Record Documents:

1. Submit record documentation per Section 23 05 00.

2. Provide a complete set of “as-built” drawings and application software on CDs.

Provide drawings as AutoCAD™ or Visio™ compatible files. Provide two copies of the “as-built” drawings with revisions clearly indicated in addition to the documents on compact disk. All as-built drawings shall also be installed on the FMCS server in a dedicated directory. Provide all product data sheets in PDF format.

3. Submit two hard copies and one electronic copy of as-built versions of the shop drawings, including product data and record drawings with revisions clearly indicated. Provide floor plans showing actual locations of control components including panels, thermostats, sensors, and hardware.

4. Provide all completed testing and commissioning reports and checklists, along with all trend logs for each system identified in the points lists.

USDA-ARS, Madison, WI 23 09 00 - 6

5. Submit printouts of all graphic screens with current values (temperatures, pressures, etc.) to the A/E verifying completion and proper operation of all points.

1.9 SOFTWARE LICENSE AGREEMENT

A. The Owner shall be the named license holder of all software associated with any and all incremental work on the project(s). In addition, the Owner shall receive ownership of all job-specific configuration documentation, data files, configuration tools, and application-level software developed for the project. This shall include, but is not limited to, all custom, job-specific software code and documentation for all configuration and programming that is generated for a given project and/or configured for use with the NAC, FMCS Server(s), and any related LAN/WAN/intranet and/or Internet connected routers and devices. Provide the Owner with all required IDs and passwords for access to any component or software program. The Owner shall determine which organizations shall be named in the SI organization ID (“orgid”) of all software licenses. Owner shall be free to direct the modification of the “orgid” in any software license, regardless of supplier.

1.10 DELIVERY, STORAGE AND HANDLING

A. Provide factory-shipping cartons for each piece of equipment and control device.

Maintain cartons through shipping, storage, and handling as required to prevent equipment damage. Store equipment and materials inside and protected from weather.

B. Factory-Mounted Components: Where control devices specified in this section are indicated to be factory mounted on equipment, arrange for shipping control devices to unit manufacturer.

1.11 JOB CONDITIONS

A. Cooperation with Other Trades: Coordinate the Work of this section with that of other sections to ensure that the Work will be carried out in an orderly fashion. It is the Contractor's responsibility to check the Contract Documents for possible conflicts between the Work of this section and that of other crafts in equipment location; pipe, duct and conduit runs; electrical outlets and fixtures; air diffusers; and structural and architectural features.

1.12 QUALITY ASSURANCE

A. Manufacturer: Company specializing in manufacturing the products specified in this Section.

B. Contractor: Company specializing in the work of this section.

C. Technician: Technician specializing in installing commercial temperature control systems.

1.13 WARRANTY

A. Refer to Section 23 05 00 for warranty requirements.

B. Within the warranty period, any defects in the work provided under this section due to faulty materials, methods of installation or workmanship shall be promptly (within 48 hours after receipt of notice) repaired or replaced by the Contractor at no expense to the Owner.

C. Warranty requirements include furnishing and installing all DDC software upgrades issued by the manufacturer during the one-year warranty period.

D. Update all software and back-ups during warranty period and all user documentation on the Owner’s archived software disks.

USDA-ARS, Madison, WI 23 09 00 - 7

1.14 WARRANTY ACCESS

A. The Owner shall grant to this Contractor reasonable access to the TCS and FMCS during the warranty period.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Alerton.

B. Automated Logic: WebCTRL.

C. Delta Controls: ORCA.

D. Honeywell.

E. Johnson Controls: Metasys Extended Architecture.

F. KMC.

G. Siemens Building Technologies: APOGEE.

H. TAC Andover.

I. Trane Summit.

J. Approved Equal.

* Above manufacturers are acceptable for work at Dairy Forage Research Center.

Siemens Building Technologies is the only acceptable manufacturer for work at the Cereal Crops Research Unit. All controls work at the Cereal Crops Research Unit shall be integrated into the existing Siemens Control System.

2.2 CONTROL DAMPERS

A. Rectangular Control Dampers - Standard Construction:

1. Shall be licensed to bear the AMCA Certified Rating Seal.

2. Test leakage and pressure drop per AMCA 500.

3. Frame: Hat-shaped channel, minimum 12 gauge extruded aluminum, and minimum 4” deep. Caulk or weld seams to prevent leakage.

4. Blades: Minimum 12 gauge extruded aluminum airfoil design, minimum 6” wide, and overlapping blades and blade seals (overlapping blade seals only is unacceptable).

5. Shaft: Non-cylindrical, solid aluminum shaft with opening in blade to match profile of shaft. Shaft shall be securely fastened to the blade and of sufficient length to mount direct-coupled actuator. Damper manufacturer shall provide drive pin extensions and outboard bearing support brackets as required.

6. Bearings: Acetal (Delrin/Celcon) inner bearing fixed to an aluminum shaft, rotating within a polycarbonate outer bearing inserted in the frame. Provide thrust bearings for vertical damper applications.

7. Blade Seals: Extruded silicone gaskets secured in an integral slot within the blade.

8. Side Seals: Stainless steel compression type or extruded silicone gasket secured in an integral slot within the frame.

9. Linkage: Shall be concealed in the frame, constructed of aluminum or corrosion-resistant zinc plated steel, and securely fastened to shaft. Blades linked for opposed operation, unless noted otherwise on the drawings. Blades shall close evenly. Use one direct-coupled actuator per damper section. Jack-shafting is not acceptable.

USDA-ARS, Madison, WI 23 09 00 - 8

10. Size Limits: 48" maximum horizontal blade length, 24 square foot maximum area per damper. Total cross-sectional area of dampers in ducts shall be at least as large as the duct without the use of blank-off sections.

11. Maximum Leakage: 9 cfm at 1” w.c. pressure differential for a 24”x 24” damper.

12. Maximum Pressure Drop for Opposed Blade Damper: 0.15" for 8,000 cfm through a 24"x24" damper (2000 fpm).

13. Maximum Pressure Drop for Parallel Blade Damper: 0.08" for 8,000 cfm through a 24"x24" damper (2000 fpm).

B. Thermally Insulated Control Damper:

1. Shall be licensed to bear the AMCA Certified Rating Seal.

2. Test leakage and pressure drop per AMCA 500.

3. Frame: Extruded aluminum, minimum 4” deep, .080” minimum thickness. Frame shall be insulated with Styrofoam on three sides if installed in duct and four sides if flanged to duct.

4. Blades: Minimum 12 gauge extruded aluminum airfoil design, minimum 6” wide, internally insulated with expanded polyurethane foam and thermally broken, with overlapping blades and blade seals (overlapping blade seals only is unacceptable).

5. Shaft: Non-cylindrical, solid aluminum shaft with opening in blade to match profile of shaft. Shaft shall be securely fastened to the blade and of sufficient length to mount direct-coupled actuator. Damper manufacturer shall provide drive pin extensions and outboard bearing support brackets as required.

6. Bearings: Acetal (Delrin/Celcon) inner bearing fixed to an aluminum shaft, rotating within a polycarbonate outer bearing inserted in the frame. Provide thrust bearings for vertical damper applications.

7. Side Seals: Stainless steel compression type or extruded silicone gasket secured in an integral slot within the frame.

8. Linkage: Shall be concealed in the frame, constructed of aluminum or corrosion-resistant zinc plated steel, and securely fastened to shaft. Blades linked for opposed operation, unless noted otherwise on the drawings. Blades shall close evenly. Use one direct-coupled actuator per damper section. Jack-shafting is not acceptable.

9. Size Limits: 48" maximum horizontal blade length, 24 square foot maximum area per damper. Total cross-sectional area of dampers in ducts shall be at least as large as the duct without the use of blank-off sections.

10. Maximum Leakage: 15 cfm at 1” w.c. pressure differential for a 24”x24” damper.

11. Maximum Pressure Drop: 0.21” for 8,000 cfm through a 24”x24” damper (2000 fpm).

2.3 DAMPER ACTUATORS

A. Damper Actuators - Electronic - Spring Return:

1. Damper actuators shall be UL listed, electronic direct coupled with spring return to normal position for modulating or two-position control as noted in the

USDA-ARS, Madison, WI 23 09 00 - 9 sequence of control. Actuator shall be 24 VAC with proportional control, electronic overload protection to prevent actuator damage due to over-rotation and “V” bolt clamp with matching “V” toothed cradle (single bolt or setscrew fasteners not acceptable).

2. Following power interruption, spring return mechanism shall close the damper.

Mechanical spring shall be rated for a minimum of 60,000 full cycles. Provide breathable membrane in actuator housing to compensate for pressure differential and allow for 95% non-condensing relative humidity in the airstream.

3. Mount actuators with motor outside of airstream whenever possible. Unit casings shall have housing with proper weather, corrosive, or explosion-proof construction as required by application.

4. Actuators shall be rated for 60,000 full cycles at rated torque with 2-year unconditional warranty. Size actuators per damper manufacturer’s recommendations.

5. Provide end switches as required for the sequence of operation.

6. Provide analog feedback signal for positive position indication. Refer to DDC points list.

B. Damper Actuators - Pneumatic:

1. Pneumatic piston type with bracket arrangement for location outside the air stream whenever possible.

2. Provide with aluminum housing and synthetic elastomer or rolling neoprene diaphragm. Actuator shall have 30 psi maximum safe operating pressure, -20°F to 150°F operating temperature range. Actuator shall be UL listed.

3. Provide pilot positioner on all damper actuators.

4. Select all actuators and spring ranges to operate their dampers as indicated in the control sequences with 50% additional force for future friction increases.

2.4 HYDRONIC CONTROL VALVES

A. General:

1. Two-position valves shall be a minimum of line size with a maximum allowable pressure drop of 2 psi.

2. Size two-way and three-way modulating valves to provide a pressure drop at full flow of 1 to 4 psi, except boiler three-way and cooling tower bypass valves shall not have a pressure drop over 2 psi.

3. Two-way valves shall be 100% tight-closing. Three-way valves shall be 100% tight-closing in both extreme positions.

4. Modulating two-way valves shall have equal percentage flow characteristics.

5. Modulating three-way valves shall have linear flow characteristics.

6. Piping geometry correction factors for Cv ratings shall be used and stated for ball valves, butterfly valves, or non-characterized valves.

USDA-ARS, Madison, WI 23 09 00 - 10

B. Two-position:

1. Ball 2” and under:

a. Design Pressure: 400 psi

Design Temperature: 212ºF Design Flow Differential Pressure Rating: 150 psi

b. Bronze or brass body, stainless steel stem, chrome plated brass or stainless steel full port ball, PTFE or RTFE seats and seals, screwed ends (solder ends are acceptable only if rated for soldering in line with 470ºF melting point of 95-5 solder).

C. Modulating:

1. Globe 1/2" to 2”:

a. Design Pressure: 250 psi

Design Temperature: 212ºF Design Flow Differential Pressure Rating: 35 psi

b. Bronze or brass body, trim and plug; stainless steel stem; stainless steel or bronze seat; EPDM or PTFE packing; threaded ends.

2. Ball 2” and under:

a. Design Pressure: 400 psi

Design Temperature: 212ºF Design Flow Differential Pressure Rating: 35 psi

b. Bronze or brass body, stainless steel stem, chrome plated brass or stainless steel full port ball, PTFE or RTFE seats and seals, screwed ends (solder ends are acceptable only if rated for soldering in line with 470ºF melting point of 95-5 solder).

2.5 VALVE ACTUATORS

A. General:

1. Actuators shall be sized to operate the valve through its full range of motion and shall close against pump shutoff pressure without producing audible noise at any valve position.

2. Provide visual position indication.

3. Mount actuator directly on valve or provide linear motion assembly as required for valve type.

B. Valve Actuators - Electronic:

1. Actuator shall be UL listed and provided with NEMA housing for applicable environment, electronic overload protection to prevent actuator damage due to over-rotation, and “V” bolt clamp with matching “V” toothed cradle (single bolt or setscrew fasteners not acceptable).

2. Actuators shall be rated for 60,000 full stroke cycles at rated torque. Stall motor not acceptable.

USDA-ARS, Madison, WI 23 09 00 - 11

3. Tri-state/floating actuators shall have auto-zeroing function for realigning valve position.

4. Proportional actuator position shall be proportional to analog or pulse width modulating signal from electronic control system.

5. Spring return actuators shall have an internal spring return mechanism. Non-mechanical forms of fail-safe operation are not acceptable.

6. Provide analog feedback signal for positive position indication. Refer to Valve Schedule and DDC points list.

2.6 VALVE SCHEDULE

Equipment Type Power Failure

Position Positive Position

Feedback Required

Fan Coil Unit (Hot Water / Chilled Water) Floating Last Position No

2.7 CONTROL INSTRUMENTATION

A. Temperature Measuring Devices:

1. Low Limit Switch:

a. Provide one foot of sensing element for each one square foot of coil area, maximum element length 25 feet, of the vapor tension type, so that any point along the entire length of measuring element is capable of triggering the switch.

b. Provide 3” minimum radius capillary support clips at each turn.

c. Furnish each thermostat with one single pole, single throw normally-opened switch and one single pole, single throw normally-closed auxiliary switch.

d. Setpoint range shall be 15ºF to 55ºF with a permanent stop at 35ºF.

e. Differential shall be fixed at approximately 5ºF and supplied with manual reset.

2.8 WIRING, CABLE, AND RACEWAYS

A. Conduit Types:

1. Rigid Metallic Conduit (RGS) and Fittings: ANSI C80.1

a. Fittings and conduit bodies: Threaded, malleable iron construction and hot dip galvanized.

2. Electrical Metallic Tubing (EMT) and Fittings: ANSI C80.3

a. Fittings and conduit bodies: Compression or steel set screw type of steel or malleable iron design for their specific application.

3. Flexible Metallic Conduit (FMC) and Fittings: FS-WW-C-566

a. Construction: Flexible steel, approved for conduit ground, zinc coated, threadless type formed from a continuous length of spirally wound, interlocked zinc coated strip steel.

USDA-ARS, Madison, WI 23 09 00 - 12

b. Fittings and conduit bodies: Threadless hinged clamp type, galvanized zinc coated cadmium plated malleable cast iron that shall include plastic or cast metal inserts supplied by the manufacturer to protect conductors from sharp edges.

c. Maximum allowable length 6'-0".

4. Liquidtight Flexible Metallic Conduit (LFMC) and Fittings:

a. Construction: Flexible steel, approved for conduit ground, zinc coated, threadless type formed from a continuous length of spirally wound, interlocked zinc coated strip steel and an extruded PVC cover.

b. Fittings and conduit bodies: Watertight, compression type, galvanized zinc coated cadmium plated malleable cast iron, UL listed, which shall include plastic or cast metal inserts supplied by the manufacturer to protect conductors from sharp edges.

c. Maximum allowable length 6'-0".

B. Wire and Cable Types:

1. Building Wire:

a. Control Circuits: Copper, stranded conductor 600 volt insulation, THHN/THWN.

2. Remote Control and Signal Cable:

a. Control Cable for Class 1 Remote Control and Signal Circuits: Copper conductor, 600 volt insulation, rated 60°C, individual conductors twisted together, shielded, and covered with a PVC jacket.

b. Control Cable for Class 2 or Class 3 Remote Control and Signal Circuits:

Copper conductor, 300 volt insulation, rated 60°C, individual conductors twisted together, shielded, and covered with a PVC jacket; UL listed.

c. Plenum Cable for Class 2 or Class 3 Remote Control and Signal Circuits:

Copper conductor, 300 volt insulation, rated 60°C, individual conductors twisted together, shielded, and covered with a nonmetallic jacket; UL listed for use in air handling ducts, hollow spaces used as ducts, and plenums.

PART 3 - EXECUTION

3.1 GENERAL INSTALLATION

A. Verify that systems are ready to receive work. Beginning of installation means installer accepts existing conditions.

B. Install system and materials in accordance with manufacturer's instructions.

C. Drawings of the TCS and FMCS network are diagrammatic only. Any apparatus not shown but required to meet the intent of the project documents shall be furnished and installed without additional cost.

USDA-ARS, Madison, WI 23 09 00 - 13

D. Install all operators, sensors, and control devices where accessible for service, adjustment, calibration, and repair. Do not install devices where blocked by piping or ductwork. Devices with manual reset or limit adjustments shall be installed below 6'-0" if practical to allow inspection without using a ladder.

E. Verify locations of wall-mounted devices (such as thermostats, temperature and humidity sensors, and other exposed sensors) with drawings and room details before installation.

Coordinate mounting heights to be consistent with other wall-mounted devices. Maximum height above finished floor shall not exceed 48”.

F. Provide valves over 3/4" size with position indicators and pilot positioners where sequenced with other controls.

G. Mount control panels adjacent to associated equipment on vibration-free walls or freestanding angle iron supports. One cabinet may accommodate more than one system in same equipment room.

H. After completion of installation, test and adjust control equipment.

I. Check calibration of instruments. Recalibrate or replace.

J. Furnish and install conduit, wire, and cable per the National Electric Code, unless noted otherwise in this section.

K. All controls associated with the proper operation of air handling units, pumps, or other mechanical equipment served by emergency power shall be connected to the emergency power system. Control components shall not be powered from the life safety branch of the emergency power system. Coordinate emergency power source connections with the Engineer.

L. All hardware, software, equipment, accessories, wiring (power and sensor), piping, relays, sensors, power supplies, transformers, and instrumentation required for a complete and operational DDC system, but not shown on the electrical drawings, are the responsibility of the Contractor.

M. Remodeling:

1. All room devices as indicated on the drawings shall be removed by the Contractor. The Contractor shall also prepare the wall for finishes. Preparing the wall shall include patching old anchor holes (after the anchoring device has been removed) and sanding the wall to remove old paint outlines remaining from original devices. The wall shall be painted to match the existing wall prior to the installation of the new room device. In the event that wall covering requires patching, the Contractor shall furnish new wall covering to match existing. If new wall covering is not available to match existing, the Contractor shall furnish a white acrylic or Plexiglas plate, 1/4” thick and sized to cover the void.

N. Labels For Control Devices:

1. Provide labels indicating service of all control devices in panels and other locations.

2. Labels may be made with permanent marking pen in the control panels if clearly legible.

3. Use engraved labels for items outside panel such as outside air thermostats.

4. Labels are not required for room thermostats, damper actuators and other items where their function is obvious.

USDA-ARS, Madison, WI 23 09 00 - 14

3.2 CONDUIT, WIRING, AND CABLE INSTALLATION

A. Conduit Sizing and Installation:

1. Conduit and conductor sizing shall be coordinated to limit conductor fill to less than 40%. Maintain conductor ampere capacity as required by the National Electrical Code (to include enlarged conductors due to temperature and quantity derating values) and to prevent excessive voltage drop and pulling tension due to long conduit/conductor lengths.

2. Minimum conduit size shall be 1/2" above grade, 3/4" below grade less than 5 feet from building foundation, and 1-1/4" below grade more than 5 feet from building foundation, unless noted otherwise.

3. Supports for metallic conduit shall be as near to 5 feet intervals as possible. A greater interval may be used if convenient because of building construction, but in no event shall support spans exceed the National Electric Code requirements.

4. Conduit runs installed above ceilings shall be properly supported. In no case shall conduit rest on the ceiling construction or the ceiling support system be used for conduit support.

5. Conduit shall not be supported from ductwork, water or sprinkler piping, etc., unless approved by the Architect/Engineer. All supports shall be from the building structure, unless noted otherwise and coordinated with all other applicable Contractors.

6. Install expansion/deflection joints where conduit crosses structure expansion/seismic joints.

7. Conduit shall be mechanically continuous from source of current to all outlets.

Conduit shall be electrically continuous from source of current to all outlets, unless a properly sized bonding conductor is routed within the conduit. All metallic conduit shall be grounded per the National Electrical Code.

8. Thermostats/temperature sensors shall be installed in junction boxes, flush with the wall, and shall be coordinated for orientation with Architect/Engineer.

9. All conduit shall be concealed in walls and above ceilings unless noted otherwise.

B. Wire Installation Methods:

1. Use no wire smaller than 14 AWG for line voltage (120V) wiring.

2. Use no wire smaller than 18 AWG for low voltage (24V) control wiring.

3. Splice and tap only in accessible junction or outlet boxes.

4. Neatly train and lace wiring inside boxes, equipment, and panelboards.

5. All conductors shall be continuous from device to their termination.

6. Install wire in conduit after interior of building has been physically protected from the weather and all mechanical work likely to damage conductors has been completed.

7. Thoroughly clean wires before installing lugs and connectors.

USDA-ARS, Madison, WI 23 09 00 - 15

8. Make splices, taps and terminations to carry full ampacity of conductors without perceptible temperature rise.

9. Terminate spare conductors with electrical tape, unless otherwise indicated on the drawings.

C. Cable Installation Methods:

1. Provide protection for exposed cables where subject to damage.

2. Use suitable cable fittings and connectors.

3. Run all open cable in a neat and symmetrical manner.

4. Open cable shall be supported by the appropriate size bridle rings. Wire and cable from different systems shall not be installed in the same bridle rings.

5. Open cable installed above suspended ceilings shall not rest on the suspended ceiling construction or use the ceiling support system for wire and cable support.

6. Where open cables are grouped, they shall be neatly bundled and held together with nylon tie wraps placed every 2.5 feet on the bundle. Where tie bundle passes though a bridle ring, it shall be fastened to the ring with a tie wrap.

7. Bridle ring supports shall be installed at five-foot intervals. All rings shall be installed where completely accessible and not blocked by piping, ductwork, inaccessible ceilings, etc.

8. Open cable shall only be installed where specifically identified in these specifications.

D. Wire and Cable Installation in Conduit:

1. Pulling shall be continuous without unnecessary stops and starts with wire or cable only partially through conduit.

2. Reels of cable or wire shall be set up close to the point where the wire or cable enters the conduit so that the cable or wire may be unreeled and run into the conduit with a minimum of change in the direction of the bend.

3. Cables or wires shall not be laid out on the ground before pulling.

4. Cables or wires shall not be dragged over earth or paving.

5. Care shall be taken so as not to subject the cable or wire to high mechanical stresses that would cause damage to the wire and cable.

6. Conductors shall not be pulled through conduits until plastering or masonry work is completed and conduits are free from moisture. Care shall be taken so that long pulls of wire or pulls around several bends are not made where the wire may be permanently stretched and the insulation damaged.

7. At least six (6) inch loops or ends shall be left at each device for installation connection.

8. Completely and thoroughly swab conduit system before installing conductors.

E. Field Quality Control:

1. Inspect wire and cable for physical damage and proper connection.

USDA-ARS, Madison, WI 23 09 00 - 16

2. Torque test conductor connections and terminations to manufacturer’s recommended values.

3. Perform continuity test on all conductors.

4. Protection of cable from foreign materials:

a. It is the Contractor’s responsibility to provide adequate physical protection to prevent foreign material application or contact with any cable type. Foreign material is defined as any material that would negatively impact the validity of the manufacturer’s performance warranty. This includes, but is not limited, to overspray of paint (accidental or otherwise), drywall compound, or any other surface chemical, liquid or compound that could come in contact with the cable, cable jacket or cable termination components.

b. Overspray of paint on any cable, cable jacket or cable termination component will not be accepted. It shall be the Contractor’s responsibility to replace any component containing overspray, in its entirety, at no additional cost to the project. Cleaning of the cables with harsh chemicals is not allowed. This requirement is regardless of the PASS/FAIL test results of the cable containing overspray. Should the manufacturer and warrantor of the structured cabling system desire to physically inspect the installed condition and certify the validity of the structured cabling system (via a signed and dated statement by an authorized representative of the structured cabling manufacturer), the Owner may, at their sole discretion, agree to accept said warranty in lieu of having the affected cables replaced. In the case of plenum cabling, in addition to the statement from the manufacturer, the Contractor shall also present to the Owner a letter from the local Authority Having Jurisdiction stating that they consider the plenum rating of the cable to be intact and acceptable.

F. Installation Schedule:

1. Conduit terminations to all devices installed in applications with rotating equipment, expansion/contraction or vibration shall be made with flexible metallic conduit, unless noted otherwise. Final terminations to exterior devices installed in damp or wet locations shall be made with liquidtight flexible metallic conduit.

Terminations in hazardous areas, as defined in the National Electrical Code, shall be connected using flexible conduit rated for the environment.

Location Conduit Type Required for Building

Wire and Cable

Dry Mechanical Spaces EMT, FMC, or Cable Tray

Wet or Damp Locations RGS or LFMC

In Slabs Above Grade Embedded EMT

Interior Locations Below Accessible Ceilings EMT

Above Non-Accessible Ceilings EMT

Above Accessible Ceilings None, Plenum Cable Required

Underground Locations RGS

Exterior Locations RGS or LFMC

USDA-ARS, Madison, WI 23 09 00 - 17

Location Conduit Type Required for Building

Wire and Cable

Below Accessible Floor EMT

Hazardous Locations as Defined by the National Electric Code

RGS conduit complete with screwed fittings and conduit seals

In Walls, Bulkheads, Soffits, or other enclosed areas EMT

3.3 DDC INSTALLATION

A. Coordinate voltage and ampacity of all contacts, relays, and terminal connections of equipment being monitored or controlled. Voltage and ampacity shall be compatible with equipment voltage and be rated for full ampacity of wiring or overcurrent protection of circuit controlled.

B. Naming Conventions: Coordinate all point naming conventions with Owner standards. In the absence of Owner standards, naming conventions shall use equipment designations shown on plans.

3.4 COMMISSIONING

A. Upon completion of the installation, this Contractor shall load all system software and start up the system. This Contractor shall perform all necessary calibration, testing and de-bugging and perform all required operational checks to ensure that the system is functioning in full accordance with these specifications.

B. Contractor shall perform tests to verify proper performance of components, routines, and points. Repeat tests until proper performance results. This testing shall include a point-by-point log to validate 100% of the input and output points of the DDC system operation.

C. Contractor shall prove that the controls network is functioning correctly and within acceptable bandwidth criteria and shall test the system with an approved protocol analysis tool. Provide a log and statistics summary showing that each channel is within acceptable parameters. Each channel shall be shown to have at least 25% spare capacity for future expansion.

D. Upon completion of the performance tests described above, repeat these tests, point by point, as described in the validation log above in the presence of Owner's Representative, as required. Properly schedule these tests so testing is complete at a time directed by the Owner's Representative. Do not delay tests so as to prevent delay of occupancy permits or building occupancy.

E. System Acceptance: Satisfactory completion is when Contractor has performed successfully all the required testing to show performance compliance with the requirements of the Contract Documents to the satisfaction of the Owner’s Representative. System acceptance shall be contingent upon completion and review of all corrected deficiencies.

3.5 PREPARATION FOR BALANCING

A. Verify that all dampers are in the position indicated by the controller (e.g., open, closed or modulating).

B. Check the calibration and setpoints of all controllers.

C. Check the locations of all thermostats and humidistats for potential erratic operation from outside influences such as sunlight, drafts, or cold walls.

USDA-ARS, Madison, WI 23 09 00 - 18

D. Check that all sequences operate as specified. Verify that no simultaneous heating and cooling occurs, unless specified. Observe that heating cannot begin at TAB reheat terminals until the unit is at the minimum cfm.

E. Verify the operation of all interlock systems.

3.6 TEST AND BALANCE COORDINATION

A. The Contractor shall furnish a single set of all tools necessary to interface to the control system for test and balance purposes.

B. The Contractor shall provide a minimum of one (1) hour training for the Balancing Contractor in the use of these tools.

C. The tools used during the test and balance process shall be returned at the completion of the testing and balancing.

3.7 DEMONSTRATION AND ACCEPTANCE

A. At completion of installation, provide two days minimum instruction for operators.

Demonstrate operation of all controls and systems. Describe the normal operation of all equipment.

3.8 INSTALLATION OF SENSORS

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

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

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

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

E. Averaging sensors and low limits shall be installed at the top of the assembly with the element on a slight downward incline away from the sensor making a serpentine pattern over the cross-sectional area with elements spaced not over 12” apart and within 6” of the top and bottom of the area.

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

G. Install outdoor air temperature sensors on exterior of north wall, complete with sun shield at designated location approved by architect/engineer. Contractor shall prime and paint the device enclosure. Color selection by Architect.

END OF SECTION

Midwest Area Engineer, 1815 North University Street, Peoria, IL 61604

Phone 309-681-6124 Fax: 309-681-6683 email:wayne.myers@.ars.usda.gov

Research, Education and Economics Agricultural Research Service

March 8, 2010

SUBJECT: Responses to Pre-Bid Questions

PROJECT: Recovery: DFRC – Repair Mechanical Systems; CCRU – Repair

Greenhouse Cooling System Madison, WI

TO: ALL BIDDERS

1: Does any existing piping, pipe fittings, valves, duct, etc., indicated for demolishing contain any hazardous materials? Including, but not limited to Asbestos and/or asbestos fibers?

Response: For bidding purposes, Contractor(s) shall assume that hazardous materials will not be encountered. Both buildings were constructed after asbestos was banned in the U.S. for use in insulation. If suspect materials are encountered during construction phase, Contractor shall notify the Government immediately for verification.

2: Reference DWG M001, General Notes #1: “AHUs and Existing Fans shall have existing conditions reviewed by pre-balancing the airflows, etc., etc.”

Who is providing this?

Response: Contractor shall be responsible for pre-balancing the airflows and reporting to the Owner / Architect / Engineer prior to performing any work.

3. Reference DWG MV101, Keynote #2: Note indicates to “reinstall” ceiling, then indicates to “replace” ceiling. Should we bid to replace or re-install existing?

Response: Contractor may reinstall existing ceiling. Contractor shall replace any suspended ceiling system components that are damaged due to completion of the Work. Contractor shall store and protect suspended ceiling system components that are to be reinstalled.

4: Reference DWG MP101, Piping Keynote #3: Note indicates to “replace” ceiling. Should this be replace or re-install existing ceiling?

Response: Contractor may reinstall existing ceiling. Contractor shall replace any suspended ceiling system components that are damaged due…