Attachment 2 - SEED PROJECT-SOW Replace Air Cooled Chiller B191 (MAR 2023).pdf

March 2023

KYJM 20-9009 Replace Package Air Cooled Chiller Unit, Building 191

Statement of Work

Note: Where there is a conflict between the Statement of Work and the HARB

Specifications, the Statement of Work shall apply.

1. Replace the damaged air-cooled package chiller with a new high efficiency air-cooled package chiller meeting the schedule below and in accordance with (IAW) HARB Section 23 64 10. Provide factory start-up and test report IAW Section 23 64 10 Para 3.4.

Provide security grilles and louvered hail guards to protect Unit’s condenser coil from hail, airborne debris, general contact damage and vandalism. Provide submittals to CEC for approval. Provide chiller coil coating corrosion letter from manufacturer. Contractor is responsible for the proper Unit disposal as indicated herein and in the Environmental Specifications beginning at paragraph 29 of this Statement of Work (SOW).

BUILDING 191

MANUFACTURER CARRIER (Chiller Standardization)

TAG: ACCH-1

TONAGE 90

PUMPS DUAL PUMP. (2)-15HP @ 75 FEET OF HEAD

EWT 55 DEG F

LWT 45 DEG F

REFRIGERANT IAW Section 23 64 10 Para 2.5.1

REFRIGERANT CIRCUIT IAW Section 23 64 10 Para 2.5.3

STEP RANGE IAW Section 23 64 10 Para 2.4.1

COMPRESSOR Digital Scroll

POWER 460/3/60 (Contractor to verify in field)

AMB AIR TEMP 95 DEG F

MIN EER IAW Section 23 64 10 Para 2.4.1

MAX ILPV IAW Section 23 64 10 Para 2.4.1

SOUND IAW Ref Section 23 64 10 Para 2.4.1

COIL DESIGN IAW Section 23 64 10 Para 2.5.9. (COPPER-COPPER)

COIL CORROSION FACTORY-APPLIED (Ref section 23 64 10 Para 2.5.9)

CASING IAW Section 23 64 10 Para 2.7.1

ACCESSORIES Provide all accessories described in Section 23 64 10 Para

2.6, and onboard energy management module.

CONTROLS Provide onboard display and BACnet card for existing

DDC.

CONTROL PACKAGE IAW Section 23 64 10 Para 2.5.4

PERFORMANCE TEST IAW Section 23 64 10 Para 3.4

FIELD TRAINING IAW Section 23 64 10 Para 3.5

a. Replace chilled-water valves, relief valves, pressure gates and thermometers IAW section 23 64 10, valve necks shall be extended as necessary to accommodate new insulation.

b. Replace all exterior chilled water-piping supports.

c. Demo exterior chilled-water piping. Install new chilled-water pipes from new chiller up to building exterior wall or up to the point where the existing pipes go underground. New chilled-water piping shall be copper IAW HARB Section 23

64 26 paragraph 2.3. Chilled-water piping insulation shall be IAW Section 23 07

00 including metal shields. Provide piping identification labels, indicating contents and flow direction.

d. Install new 4-in copper pipes and 4-in butterfly valves with Victaulic blank flanges in the supply and return lines. The intention is to leave provisions for future connection to a temporarily chiller if needed. Coordinate locations with

CEC prior to execution. Provide insulation as per section above. Provide piping identification labels, tags as “Temp Chiller Tap”. See installation detail below.

e. Provide engraved laminated phenolic identification plate, Tag as ACCH-1.

Identification plates shall be three layers, black-white-black, engraved to show white letters on black background. Letters shall be upper case. Identification plates 1-1/2-inches high and smaller shall be 1/16-inch thick, with engraved lettering 1/8-inch high; identification plates larger than 1-1/2-inches high shall be

1/8-inch thick, with engraved lettering of suitable height. Identification plates 1-

1/2-inches high and larger shall have beveled edges. Install identification plates using a compatible adhesive.

f. Provide a Three-Phase monitor for the new chiller. The three-phase monitor shall continuously monitor the incoming voltage to provide superior motor protection from premature failure and damage due to voltage unbalance, high and low voltages, phase loss, phase reversal, faulty power, lightning power surges and short cycling. Provide LED indicator to display the current system condition.

Minimum time delay to turn the equipment back on shall be 1-minute after the power phase is restored. Provide material submittal for CEC review and approval.

g. Fully integrate new chiller into existing BACnet DDC control system and demonstrate existing design functionality. Buildings 191 has existing

AutomatedLogic DDC Control system. Existing emergency shutdown button(s) shall control the new equipment. The DDC program shall enable the chiller if the outside temperature is above 45°F (adjustable). The DDC program shall enable

(through start/stop) the chiller 1-minute after the chiller pump(s) are proofed on and when the water flow as detected at the chiller water flow meter is greater than the manufacturer’s recommended minimum chiller water flow. DDC program shall also display the current chiller load capacity (GPM) and the supply and return temperatures on the GUI chiller display page, which shall also be trended.

Provide program backup files and graphics.

DDC integration must be done by a ddc control company authorized to work and with experience in AutomatedLogic control systems. If new server, controller, supervisor, sensor, device, etc.. is installed, they must be from AutomatedLogic manufacturer. The use of different DDC control system or manufacturer is not allowed. Provide submittals to CEC for approval prior commence working on the building.

New software shall be provided for any new server, controller or supervisor installed. Also see paragraph “DDC Software”.

2. DDC Software.

a) A written statement entitled “Software Upgrades” stating software and firmware patches and updates will be provided upon request at no additional cost to the government for a minimum of two years from contract acceptance. Include a table of all DDC system software and firmware provided under this contract, listing the original release dates, version numbers, part numbers and serial numbers.

b) All necessary documentation, configuration information, configuration tools, programs, drivers, and other software is licensed to and otherwise remains with the government such that the government or their agent are able to repair, replace, upgrade, and expand the system without subsequent or future dependence of the

Contractor. Software licenses must not require periodic fees and must be valid in perpetuity.

c) The use of any hardware/USB keys to enable system or software access is prohibited.

d) Provide software with the manufacturer's installation media and lifetime licenses. The software shall permit complete monitoring, modification, and troubleshooting interface with the DDC system.

e) Provide all programming and tools to configure and program all controllers.

f) Provide backup programming and graphics in USB device.

3. O&M Manuals: Provide O&M manual documents that contains instructions on proper installation, operation, and maintenance of all new installation.

4. DDC Control Shop Drawings: Provide electronic copy of updated DDC control shop drawings showing new equipment integration.

5. CONSTRUCTION: The Contractor shall performance the project in accordance with approved drawings, if applicable, submittals and specifications. Contractor shall not order any equipment or materials and shall not begin any phase of construction until

Government approves in writing the final submittal. Construction work may need to be phased to accommodate mission requirements. The government will provide its known phasing requirements before construction begins, but facility availability may change based on real world situation. Work will need to be closely coordinated with the facility users.

6. MATERIALS REVIEW AND SITE VISIT/KICKOFF: Contractors shall utilize the site visit and review the Scope of Work and pertinent attachments, if applicable, to generate a list of questions (RFI) and submit them to the Contracting Officer to clarify requirements.

7. PERFORMANCE PERIOD: It is recommended that all Contractor works shall be accomplished within 180 calendar days, including any time for submittals, shipping and handling of equipment.

8. EXISTING FACILITIES: The contractor is strongly encouraged to visit site and thoroughly investigate existing conditions. The existing dimensions shown on the drawings, if applicable, are for approximation purposes only. Failure to verify the dimensions and locations before commencing work will be at the Contractor’s risk and shall not relieve the Contractor from accomplishing the work required by the contract at the price awarded by the government.

9. SUBMITTALS: Provide electronic (digital) copy for each submittal using the AF Form

3000, Material Approval Submittal. Any proposed deviation to these specifications will require submittal to the Contracting Officer. Each submittal shall include information as described in the technical specifications or as shown on the drawings. Once an item of material or equipment has been approved, the Contractor will not be required to re-submit with the following exception: If, at any time during the duration of this contract, the

Contractor desires to change materials from those originally approved, new materials shall be submitted to and approved by the Contracting Officer prior to incorporation into the project.

10. GOVERNMENT REVIEW: Contractor shall allow up to 15 business days for government review of any other deliverable.

11. ASSIST ARRANGING OUTAGES: Interruption of service for HVAC, Power, Lighting, Telephone, Fire Protection, Fire Detection, Water, Sewer, Roads, and Parking Lots are considered outages. Outages shall be scheduled at one week prior to the desired time.

12. ELECTRICAL SERVICE AND COMMUNICATIONS FACILITIES: Contractor will not disturb electrical and/or communications facilities and wiring. Where such facilities require removal for accomplishment of the task, Contractor shall notify the Contracting

Officer at least seven calendar days in advance of the requirement, for the accomplishment of such removals by the Government. Contractor shall allow the telephone company and communication personnel access to the systems required. If damage by construction activities occurs, Contractor shall restore service within 24-hours with no cost to the Government.

13. WORKING HOURS: The normal hours of work at HARB are from 0730 to 1630 hours, Monday through Friday, excluding holidays. Access to work sites may be restricted to these hours and days. All other hours shall be considered non-regular time and must be requested in writing to the Contracting Officer 72 hours in advance. Work that requires inspection during accomplishment or that prevents inspection of previous work after accomplishment during normal hours must be coordinated in advance with the

Contracting Officer and associated additional costs deducted from the final payment of the contract amount.

14. NOTIFICATION RESPONSIBILITIES: Contractor shall notify Contracting Officer, via phone or E-mail, a minimum of 24 hours in advanced of: (1) initially starting work or starting work after a multi-workday pause, (2) ceasing work for a multi-workday pause, and (3) deliveries of major materials or equipment.

15. CONTINUED USE OF FACILITES: Surrounding buildings and utilities will continue in use during this contract. Work and work areas shall be scheduled at least 48 hours in advance of anticipated time of accomplishments. Work shall be performed in a manner to create minimum disturbance and inconvenience to personnel. Removal or disconnection of AC equipment shall not be scheduled for the week of the UTA weekend. Contractor’s personnel will be limited to work areas.

16. BASE REGULATIONS: Contractor shall conform to all base regulations and directives pertaining to security, safety, fire, traffic, and personnel clearance, in so far as they pertain to the Contractors activities at Homestead Air Reserve Base (HARB), Florida.

Contractor shall ensure conformance by all employees.

17. BASE ACCESS: Contractor shall coordinate with the Contracting Officer to gain access to areas of the installation involving in this project. Contractor shall follow all Base rules and regulations regarding entry and access to Base. Contractor shall have in possession all applicable identification documents prior to arrival. Contractor is encouraged to perform background checks on personnel before submission to the Government; the

Government is not responsible for consequences of contractor personnel failing to pass

Base security criteria. Contractor is responsible to obtain, monitor, and renovate security badges used by its own staff and Subcontractors during the duration of this contract.

18. CONTRACTOR QUALIFICATIONS: Contractor personnel will possess any certifications required by federal, state, and local regulations to perform the work. Copies of these certifications may be required at the discretion of the Contracting Officer.

19. SITE SUPERVISOR: The job foreman or site superintendent shall be on the payroll of the Contractor; shall be on site daily for a majority of sub-contractor work; and shall be conversant in English.

20. ON-SITE FIELD OVERSIGHT: Contractor shall provide the manpower, equipment, material, services, and transportation necessary to ensure oversight services throughout accomplishment of this task order. Government will provide on-going surveillance and submittal approval recommendations. The designated representative of the Government will report all findings to the Contracting Officer.

21. EXCAVATION PERMITS: Contractor shall obtain excavation permits (AF Form 103, Base Civil Engineering Work Clearance Request) prior to any excavation. The permit shall be requested by the Contractor and obtained from the Engineering Flight, 482

MSG/CEC, building 232. Permit shall be requested at least three weeks before the start of excavation. Should any one of the coordination points indicate an additional underground utility or structure over and above those shown on the contract drawing either by sketch on the permit’s drawing or by field pointing or by flagging, Contractor shall be responsible for protection of each of the items indicated. Should damage occur to any of the items indicated by the Contractor, contract drawings or coordinating agency to the permit, Contractor shall be responsible for prompt repair of the damage to return the item to its original workable condition. It is required that the operator of excavation equipment have a valid permit in procession while excavating. Contractor is responsible for initiating the permit renewal process if required.

22. OPEN FLAME, WELDING PERMITS: The Contractor must receive a permit for any welding or other open flame work to be done on Base from the Base’s Fire Department before such work is performed.

23. SOIL RE-USE POLICY: Contractor shall ensure that DERM is notified, and approval is obtained prior to any soil re-use outside of the HARB property boundary. The soil re-use policy may be found at http://www.miamidade.gov/environment/pollution-remediation.asp

24. PROGRESS REVIEW MEETINGS: Contractor shall hold weekly progress review meetings and shall coordinate these meetings with Contracting Officer. These meetings will review the work performed, issues, schedules, milestones, and current status. The

Contractor shall submit meeting’s agenda 24 hours minimum prior of the meeting. The

Contractor shall generate and provide the meeting’s minutes within 48-hour post meeting.

The Contracting Officer may only modify the progress weekly meeting schedule. The progress review meetings will continue until the project is finished.

25. PRE-FINAL INSPECTION: Contractor shall conduct a pre-final walk-through inspection and publish the pre-final inspection findings in a pre-Final inspection report. Contractor shall include all O&M manuals, operating instructions, and test reports for review.

26. FINAL INSPECTION / FINAL ACCEPTANCE: Contractor shall conduct a final inspection that must be witnessed by government-selected personnel and publish the findings in a Final Inspection Report. The inspection shall concentrate on the items identified at the pre-final inspection and recorded in the pre-final report but shall also include any test chosen by the attending government personnel. All system failures or other deficiencies identified during the testing must be corrected and retested in the presence of government-selected personnel. The Final Inspection Report shall also certify that all items required in the Scope of Work have been implemented and that the construction is complete. The Final Inspection Report shall also include as-built drawings and specifications verifying that all development standards have been met.

27. DELIVERY: Contractor shall complete all inspections and requirements prior to final inspection. Following final inspection, Contractor shall deliver to the Government the

O&Ms and DDC shop drawings in PDF format.

28. WARRANTY: The warranty shall be issued in accordance with FAR 52.246-21. Provide one (1) year Warranty of Construction. Provide one (1) year equipment manufacturer warranty on all parts and components. Provide extended four (4) years equipment manufacturer warranty on compressors. Extended warranties offered by the Contractor and its subcontractors or suppliers may be accepted by the Government at its discretion.

29. SUMMARY FLOWCHART OF MATERIAL AND WASTE STREAM HANDLING:

Hazardous Materials

(Environmental

Specification)

Recycling, Construction &

Demolition Wastes

(SOW)

Hazardous Waste / Spills

(Environmental Specification)

Salvageable

Materials

(SOW)

Hazmat Generated Waste

NO

YES

NO

YES

Hazardous

Waste?

Salvageable

Materials?

30. SALVAGEABLE MATERIALS: All materials not reused in the project according to the applicable drawings or as specified herein, will be designated as either salvageable or unsalvageable by the Contracting Officer Representative (COR).

a. Salvageable materials shall remain the property of the government and shall be disposed of by the Contractor as directed by the COR. Materials to be removed shall be removed without damage to adjacent areas. All damage resulting from removal shall be repaired by the Contractor at no cost to the government with materials of like nature, type, and construction as were damaged or with materials to match existing adjacent areas.

b. Unsalvageable materials shall be considered Construction and Demolition Wastes.

31. RECYCLING, CONSTRUCTION & DEMOLITION WASTES: The Contractor shall separate and handle all hazardous wastes according to the Environmental Protection Statement. All remaining non-hazardous and non-water-soluble waste shall be considered construction and demolition (C&D) waste. The Contractor will be responsible for providing recycling containers and contacting recycling and disposal vendors for pickup or delivery. The Contractor will provide the Engineering Flight with receipts showing the disposition of recyclables to include weights, cost, dates received and signatures of the accepting organization.

a. Recyclables: Recyclables include all materials classified as "construction and demolition debris" by Florida Administrative Code 62-701.200 (27):

“Construction and Demolition Debris” means discarded materials generally considered to be not water soluble and non-hazardous in nature, including but not limited to steel, glass, brick, concrete, asphalt material, pipe, gypsum wallboard, and lumber, from the construction or destruction of a structure as part of a construction or demolition project or from the renovation of a structure, including such debris from construction of structures at a site remote from the construction or demolition project site. The term includes rocks, soils, tree remains, trees, and other vegetative matter which normally results from land clearing or land development operations for a construction project; clean cardboard, paper, plastic, wood, and metal scraps from a construction project; effective January 1, 1997, except as provided in Section 403.707(13)(j), F.S., unpainted, non-treated wood scraps from facilities manufacturing materials used for construction of structures or their components and unpainted, non-treated wood pallets provided the wood scraps and pallets are separated from other solid waste where generated and the generator of such wood scraps or pallets implements reasonable practices of the generating industry to minimize the commingling of wood scraps or pallets with other solid waste; and de minimum amounts of other nonhazardous wastes that are generated at construction or demolition projects, provided such amounts are consistent with best management practices of the construction and demolition industries. Mixing of construction and demolition debris with other types of solid waste will cause it to be classified as other than construction and demolition debris.

b. Non-recyclables: If the waste cannot be recycled, the waste becomes the property of the

Contractor and may be disposed in accordance with all applicable state, federal and local statutes, regulations, and executive orders in effect at the time of disposal.

SPECIFICATIONS for Homestead Air Reserve Base Building-Level HVAC Repairs, Modernization, and Retro-Commissioning for Multiple Projects V 1.5 June 2016

Section 23 64 10 Page 1

SECTION 23 64 10

+ Florida Energy Efficiency Code

WATER CHILLERS, VAPOR COMPRESSION TYPE (≤ 100 Tons) 08/08

PART 1 GENERAL

1.1 REFERENCES

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

AIR-CONDITIONING, HEATING AND REFRIGERATION INSTITUTE (AHRI)

AHRI 550/590 (2003) Standard for Water-Chilling Packages Using the Vapor Compression Cycle

AHRI 575 (1994) Method of Measuring Machinery Sound Within an Equipment Space

AHRI 740 (1998) Refrigerant Recovery/Recycling Equipment

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS (ASHRAE)

ASHRAE 15 (2007) Safety Standard for Refrigeration Systems

ASHRAE 34 (2007) Designation and Safety Classification of Refrigerants

ASHRAE 90.1 – SI (2004; Addendas a through p, r through v, x,ak 2006; Supp to Addendas 2006;

Errata 2007; Interpretations 8 - 15:2007; Errata 2008; INT 16-21 2008; Errata 2008; INT 22-26 2008) Energy Standard for Buildings Except Low-Rise Residential Buildings, SI Edition

AMERICAN WELDING SOCIETY (AWS)

AWS Z49.1 (2005) Safety in Welding, Cutting and Allied Processes

ASME INTERNATIONAL (ASME)

ASME BPVC SEC VIII D1 (2007; Addenda 2008) Boiler and Pressure Vessel Code; Section VIII, Pressure Vessels Division 1 - Basic Coverage

ASTM INTERNATIONAL (ASTM)

ASTM A 307 (2007b) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

ASTM B 117 (2007a) Standing Practice for Operating Salt Spray (Fog) Apparatus

ASTM D 520 (2000; R 2005) Zinc Dust Pigment

ASTM E 84 (2008a) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM F 104 (2003) Standard Classification System for Nonmetallic Gasket Materials

ASTM B 209 (2007) Aluminum and Aluminum-Alloy Sheet and Plate

ASTM C 534 (2007) Standard Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form

1393307087C Highlight

Section 23 64 10 Page 2

ASTM C 552 (2007) Standard Specification for Cellular Glass Thermal Insulation

ASTM C 920 (2008) Elastomeric Joint Sealants

ASTM E 84 (2007) Standard Test Method for Surface Burning Characteristics of Building Materials

MIDWEST INSULATION CONTRACTORS ASSOCIATION (MICA)

MICA Insulation Stds (1999) National Commercial & Industrial Insulation Standards

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA MG 11 (1977; R 2007) Energy Management Guide for Selection and Use of Single Phase Motors

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 37 (2006) Installation and Use of Stationary Combustion Engines and Gas Turbines

1.2 SUBMITTALS

The following shall be submitted in accordance with the statement of work:

SD-03 Product Data

Water Chiller: Manufacturer's standard catalog data, at least highlighted to show material, size, options, performance charts and curves, etc. in adequate detail to demonstrate compliance with this specification. Data shall include manufacturer's recommended installation instructions and procedures. If vibration isolation is specified for a unit, vibration isolator literature shall be included containing catalog cuts and certification that the isolation characteristics of the isolators provided meet the manufacturer's recommendations.

Verification of Dimensions: A letter including the date the site was visited, conformation of existing conditions, and any discrepancies found.

Manufacturer's Multi-Year Compressor Warranty: Manufacturer's multi-year warranty for compressor(s) in air-cooled water chillers as specified.

System Performance Tests: A schedule, at least 1 week prior to the start of related testing, for the system performance tests. The schedules shall identify the proposed date, time, and location for each test.

Field Training Schedule: A schedule, at least 1 week prior to the date of the proposed training course, which identifies the date, time, and location for the training.

SD-06 Test Reports

Section 23 64 10 Page 3

System Performance Tests: Two copies of the report shall be provided in bound 8 1/2 x 11 inch booklets.

SD-07 Certificates

Refrigeration System: Where the system, components, or equipment are specified to comply with requirements of AGA, NFPA, ARI, ASHRAE, ASME, or UL, 1 copy of proof of such compliance shall be provided. The label or listing of the specified agency shall be acceptable evidence. In lieu of the label or listing, a written certificate from an approved, nationally recognized testing organization equipped to perform such services, stating that the items have been tested and conform to the requirements and testing methods of the specified agency may be submitted.

When performance requirements of this project's drawings and specifications vary from standard ARI rating conditions, computer printouts, catalog, or other application data certified by ARI or a nationally recognized laboratory as described above shall be included. If ARI does not have a current certification program that encompasses such application data, the manufacturer may self certify that his application data complies with project performance requirements in accordance with the specified test standards.

SD-08 Manufacturer's Instructions

Water Chiller - Installation Instruction

SD-10 Operation and Maintenance Data

Operation and Maintenance Manuals: Three complete copies of an operation manual in bound 8 1/2 x 11 inch booklets listing step-by-step procedures required for system startup, operation, abnormal shutdown, emergency shutdown, and normal shutdown at least 1 week prior to the first training course. The booklets shall include the manufacturer's name, model number, and parts list. The manuals shall include the manufacturer's name, model number, service manual, and a brief description of all equipment and their basic operating features. Three complete copies of maintenance manual in bound 8 1/2 x 11 inch booklets listing routine maintenance procedures, possible breakdowns and repairs, and a trouble shooting guide. The manuals shall include piping and equipment layouts and simplified wiring and control diagrams of the system as installed.

1.3 SAFETY REQUIREMENTS

Exposed moving parts, parts that produce high operating temperature, parts which may be electrically energized, and parts that may be a hazard to operating personnel shall be insulated, fully enclosed, guarded, or fitted with other types of safety devices. Safety devices shall be installed so that proper operation of equipment is not impaired. Welding and cutting safety requirements shall be in accordance with AWS Z49.1.

1.4 DELIVERY, STORAGE, AND HANDLING

Stored items shall be protected from the weather, humidity and temperature variations, dirt and dust, or other contaminants. Proper protection and care of all material both before and during installation shall be the Contractor's responsibility. Any materials found to be damaged shall be replaced at the

Section 23 64 10 Page 4

Contractor's expense. During installation, piping and similar openings shall be capped to keep out dirt and other foreign matter.

1.5 PROJECT REQUIREMENTS

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

1.6 MANUFACTURER'S MULTI-YEAR COMPRESSOR WARRANTY

The Contractor shall provide a 5 year parts only (excludes refrigerant) manufacturer's warranty on the chiller compressor(s). This warranty shall be directly from the chiller manufacturer to the Government and shall be in addition to the standard one-year warranty of construction. The manufacturer's warranty shall provide for the repair or replacement of the chiller compressor(s) that become inoperative as a result of defects in material or workmanship within 5 years after the date of final acceptance. When the manufacturer determines that a compressor requires replacement, the manufacturer shall furnish new compressor(s) at no additional cost to the Government. Upon notification that a chiller compressor has failed under the terms of the warranty, the manufacturer shall respond in no more than 24 hours. Response shall mean having a manufacturer-qualified technician onsite to evaluate the extent of the needed repairs. The warranty period shall begin on the same date as final acceptance and shall continue for the full product warranty period.

1.6.1 Indexed Notebook

The Contractor shall furnish to the Contracting Officer a bound and indexed notebook containing a complete listing of all water chillers covered by a manufacturer's multi-year warranty. The chiller list shall state the duration of the warranty thereof, start date of the warranty, ending date of the warranty, location of the warranted equipment, and the point of contact for fulfillment of the warranty. This information shall be provided for each chiller and the recorded chiller serial numbers shall identify each chiller. Point of contact shall include the name of the service representative along with the day, night, weekend, and holiday phone numbers for a service call. The completed bound and indexed notebook shall be delivered to the Contracting Office prior to final acceptance of the facility. The Contractor shall furnish with each manufacturer's multi-year warranty the name, address, and telephone number (day, night, weekend, and holiday) of the service representative nearest to the location where the equipment is installed. Upon a request for service under the multi-year warranty, the service representative shall honor the warranty during the warranty period, and shall provide the services prescribed by the terms of the warranty.

1.6.2 Equipment Warranty Tags

At the time of installation, each item of manufacturer's multi-year warranted equipment shall be tagged with a durable, oil- and water-resistant tag, suitable for interior and exterior locations, resistant to solvents, abrasion, and fading due to sunlight. The tag shall be attached with copper wire or a permanent, pressure-sensitive, adhesive backing. The tag shall be installed in an easily noticed location attached to the warranted equipment. The tag for this equipment shall be similar to the following in format, and shall contain all of the listed information:

MANUFACTURER'S MULTI-YEAR WARRANTY EQUIPMENT TAG

Section 23 64 10 Page 5

Equipment/Product Covered: __COMPRESSORS______

Manufacturer:_______Model No.:_____Serial No.:__

Warranty Period: From _________to _____________

Contract No.: _________________________________

Warranty Contact: _____________________________

Name: _________________________________________

Address: ______________________________________

Telephone: ____________________________________

STATION PERSONNEL SHALL PERFORM PREVENTIVE

MAINTENANCE AND OPERATIONAL MAINTENANCE

PART 2 PRODUCTS

2.1 STANDARD COMMERCIAL PRODUCTS

Materials and equipment shall be standard Commercial cataloged products of a manufacturer regularly engaged in the manufacturing of such products, which are of a similar material, design and workmanship.

These products shall have a two year record of satisfactory field service prior to bid opening. the two year record of service shall include applications of equipment and materials under similar circumstances and of similar size.

Products having less than a two year record of satisfactory field service shall be acceptable if a certified record of satisfactory field service for not less than 6000 hours can be shown. The 6000 hour service record shall not include any manufacturer's prototype or factory testing.

Satisfactory field service shall have been completed by a product that has been, and presently is being sold or offered for sale on the commercial market through the following copyrighted means:

advertisements, manufacturer's catalogs, or brochures.

2.2 MANUFACTURER'S STANDARD NAMEPLATES

Major equipment including chillers, compressors, compressor drivers, condensers, water coolers, receivers, refrigerant leak detectors, heat exchanges, fans, and motors shall have the manufacturer's name, address, type or style, model or serial number, and catalog number on a plate secured to the item of equipment. Plates shall be durable and legible throughout equipment life. Plates shall be fixed in prominent locations with nonferrous screws or bolts.

2.3 ELECTRICAL WORK

a. For packaged equipment, the manufacturer shall provide controllers including the required monitors and timed restart.

b. For single-phase motors, provide high-efficiency type, fractional-horsepower alternating-current motors, including motors that are part of a system, in accordance with NEMA MG 11.

Section 23 64 10 Page 6

c. For polyphase motors, provide squirrel-cage medium induction motors, including motors that are part of a system, and that meet the efficiency ratings for premium efficiency motors in accordance with NEMA MG 11.

d. Provide motors in accordance with NEMA MG 11 and of sufficient size to drive the load at the specified capacity without exceeding the nameplate rating of the motor. Motors shall be rated for continuous duty with the enclosure specified. Motor duty requirements shall allow for maximum frequency start-stop operation and minimum encountered interval between start and stop. Motor torque shall be capable of accelerating the connected load within 20 seconds with 80 percent of the rated voltage maintained at motor terminals during one starting period.

Provide motor starters complete with thermal overload protection and other necessary appurtenances. Motor bearings shall be fitted with grease supply fittings and grease relief to outside of the enclosure.

e. Provide inverter duty premium efficiency motors for use with variable frequency drives.

f. Where two-speed or variable-speed motors are indicated, solid-state variable-speed controllers may be provided to accomplish the same function. Use solid-state variable-speed controllers for motors rated 10 hp or less and variable frequency drives for larger motors.

2.4 SELF-CONTAINED WATER CHILLERS, VAPOR COMPRESSION TYPE

Unless necessary for delivery purposes, units shall be assembled, leak-tested, charged (refrigerant and oil), and adjusted at the factory. Chiller shall be provided with a single point wiring connection for incoming power supply.

2.4.1 Scroll, Reciprocating, or Rotary Screw Type

Chiller shall conform to ASHRAE 15 & 34.

Provide a multiple reciprocating, scroll or rotary screw-type compressor air-cooled package water chiller unit that meets the following criteria designated by the government statement of work, work order or project drawings:

Tonnage capacity. If the tonnage is not provided or indicated, select a unit that closely matches the existing unit. Do not oversize!

Number of stages. Units shall capable of continuous operation down to minimum stage capacity. Unless otherwise stated, the minimum stage shall be no more than 25% for units of 60 tons capacity or greater, 33% for units of 25 tons or greater and less than 60 tons, and 50% for units of 7 tons or greater but less than 25 tons.

Air Handler cooling-coil circuits. If not provided or indicated, match the number of circuits of the existing cooling coil and piping arrangement.

Chiller units of 30 tons capacity or greater shall have a minimum of two independent refrigeration circuits unless specified otherwise by the government.

Section 23 64 10 Page 7

Efficiency: Base capacity and power ratings, at the conditions indicated and specified, on the test requirements of ARI 550/590. Power input for the chiller unit shall not exceed 1.20 kW/ton (min EER = 10, min COP = 2.931) at full load capacity. Integrated part load value (ILPV) shall not exceed 0.90 kW/ton for reciprocating systems, 0.98 kW/ton for helical rotary systems, or 0.86 kW/ton for scroll systems. {Energy Efficiency Ratio (EER) = 12 / (KW/ton). Coefficient of Performance (COP) = EER / 3.412}

Sound pressure levels: Ratings shall be in accordance with AHRI 575. Unless indicated otherwise provided, the chiller sound pressure level, in A-weighted decibels (dBA), with a reference pressure of 20 micropascals, shall not exceed 90 dBA when the chiller center is located 40 feet or greater from any adjacent occupied building perimeter, or 85 dbA when the chiller center is located less than 40 feet from any adjacent occupied building perimeter. Factory-standard sound kits are acceptable means to reduce measured sound levels.

As a minimum, chiller shall include the following components as defined in paragraph CHILLER

COMPONENTS.

a. Refrigerant and oil

b. Structural base

c. Chiller refrigerant circuit

d. Controls package

e. Scroll, reciprocating, or rotary screw compressor

f. Compressor driver, electric motor

g. Compressor driver connection

h. Water cooler (evaporator)

i. Air-cooled condenser coil

j. Heat recovery condenser (if indicated)

k. Unit-specific tools (if any)

2.5 CHILLER COMPONENTS

2.5.1 Refrigerant and Oil

Refrigerants shall be one of the fluorocarbon gases. Refrigerants shall have number designations and safety classifications in accordance with ASHRAE 15 & 34. Refrigerants shall have an Ozone Depletion Potential (ODP) of 0.055 or less except that R-22 shall no longer be permitted.

2.5.2 Structural Base

Chiller shall be provided with a factory-mounted structural steel base (welded or bolted) or support legs.

Chillers connected to building structures shall be isolated by means of vibration isolators with published load ratings. Vibration isolators shall have isolation characteristics as recommended by the manufacturer for the unit supplied and the service intended. Chillers placed on dedicated concrete pads not connected to a building’s structure may also be placed on molded neoprene isolation pads designed for the purpose and as approved by the manufacturer.

2.5.3 Chiller Refrigerant Circuit

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Chiller refrigerant circuit shall be completely piped and factory leak tested. For multicompressor units, not less than 2 independent refrigerant circuits shall be provided. Circuit shall include as a minimum a combination filter and drier (unless unit uses a purge system), combination sight glass and moisture indicator, liquid-line solenoid valve for reciprocating, an electronic or thermostatic expansion valve with external equalizer, charging ports, compressor service valves for field-serviceable compressors, and superheat adjustment.

2.5.4 Controls Package

Chiller shall be provided with a complete factory-mounted (or remote-mounted unit only if indicated), prewired electric or microprocessor based operating and safety control system. Controls package shall contain as a minimum a digital display or acceptable gauges, an on-auto-off switch, power wiring, and control wiring. Controls package shall provide operating controls, monitoring capabilities, programmable setpoints, safety controls, and EMCS interfaces as defined below.

2.5.4.1 Operating Controls

Chiller shall be provided with the following adjustable operating controls as a minimum.

a. Leaving chilled water temperature control

b. Adjustable timer or automated controls to prevent a compressor from short cycling

c. Automatic lead/lag controls (adjustable) for multi-compressor units

d. Load limiting

e. System capacity control to adjust the unit capacity in accordance with the system load and the programmable setpoints. Controls shall automatically re-cycle the chiller on power interruption.

f. Startup and head pressure controls to allow system operation at all ambient temperatures down to 50 degrees F

g. Fan sequencing for air-cooled condenser

2.5.4.2 Monitoring Capabilities

During normal operations, the control system shall be capable of monitoring and displaying the following operating parameters. Access and operation of display shall not require removing any panels.

Access doors must be opened without the use of special tools.

a. Entering and leaving chilled water temperatures

b. Self diagnostic

c. Operation status

d. Operating hours

e. Number of starts

f. Compressor status (on or off)

g. Refrigerant discharge and suction pressures

h. Oil pressure

2.5.4.3 Programmable Setpoints

The control system shall be capable of being reprogrammed directly at the unit. The programmable setpoints shall include the leaving chilled water temperature.

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2.5.4.4 Safety Controls with Manual Reset

Chiller shall be provided with the following safety controls which automatically shutdown the chiller and which require manual reset.

a. Low chilled water temperature protection

b. High condenser refrigerant discharge pressure protection

c. Low evaporator pressure protection

d. Chilled water flow detection

e. High motor winding temperature protection

f. Low oil flow protection if applicable

2.5.4.5 Safety Controls with Automatic Reset

Chiller shall be provided with the following safety controls which automatically shutdown the chiller and which provide automatic reset.

a. Over/under voltage protection

b. Chilled water flow interlock

2.5.4.6 Remote Alarm

During the initiation of a safety shutdown, a chiller's control system shall be capable of activating a remote alarm bell. In coordination with the chiller, the Contractor shall provide an alarm circuit (including transformer if applicable) and a minimum 4 inch diameter alarm bell. Alarm circuit shall activate bell in the event of machine shutdown due to the chiller's monitoring of safety controls. The alarm bell shall not sound for a chiller that uses low-pressure cutout as an operating control.

2.5.4.7 Energy Management Control System (EMCS) Interface

The control system shall be capable of communicating all data to a remote integrated DDC processor through a single shielded cable. The data shall include as a minimum all system operating conditions, capacity controls, and safety shutdown conditions. The control system shall also be capable of receiving at a minimum a remote unit start/stop command, and leaving chilled water temperature.

2.5.5 Compressor(s)

2.5.5.1 Reciprocating Compressor(s)

Rotating parts shall be statically and dynamically balanced at the factory to minimize vibration.

Compressors shall be capable of operating at partial-load conditions without increased vibration over the normal vibration at full load operation and shall be capable of continuous operation down to the lowest step of unloading as specified. Compressors of size 10 horsepower and above shall have an oil lubrication system of the reversible, forced-feed type with oil strainer. Shaft seal in open-type units shall be mechanical type. Piston speed for open-type compressors shall not exceed the manufacturer's recommendation or 1200 fpm, whichever is less. Compressors shall include:

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a. Vertical, V, W, or radial cylinder design

b. Oil lubrication

c. Integrally cast block of close-grained iron or cast aluminum block with hardened steel cylinder sleeves

d. Oil-level bull's eye

e. Cast cylinder heads

f. Cast-aluminum or forged-steel connecting rods

g. Cast iron or forged-steel crankshaft

h. Main bearings of the sleeve-insert type

i. Crankcase oil heaters controlled as recommended by the manufacturer

j. Suction and discharge refrigerant service valves that are flange connected, wrench operated, with cap

k. A strainer on the suction side of the compressor

2.5.5.2 Scroll Compressor(s)

Compressors shall be of the hermetically sealed design. Compressors shall be mounted on vibration isolators to minimize vibration and noise. Rotating parts shall be statically and dynamically balanced at the factory to minimize vibration. Lubrication system shall be centrifugal pump type equipped with a means for determining oil level and an oil charging valve. Crankcase oil heater shall be provided if standard or if available as an option. If provided, the crankcase oil heater shall be controlled as recommended by the manufacturer.

2.5.5.3 Rotary Screw Compressor(s)

Compressors shall operate stably for indefinite time periods at any stage of capacity reduction without hot-gas bypass. Provision shall be made to insure proper lubrication of bearings and shaft seals on shutdown with or without electric power supply. Rotary screw compressors shall include:

a. An open or hermetic, positive displacement, oil-injected design directly driven by the compressor driver. Compressor shall allow access to internal compressor components for repairs, inspection, and replacement of parts.

a. Rotors shall be solid steel, possessing sufficient rigidity for proper operation.

b. A maximum rotor operating speed no greater than 3600 RPM. provide cast iron rotor housing

c. Casings of cast iron, precision machined for minimal clearance about periphery of rotors with minimal clearance at rotor tops and rotor ends.

d. A lubrication system of the forced-feed type that provides oil at the proper pressure to all parts requiring lubrication.

e. Bearing housing shall be conservatively loaded and rated for an L(10) life of not less than

200,000 hours. Shaft main bearings of the sleeve type with heavy duty bushings or rolling element type in accordance with ABMA 9 or ABMA 11.

f. A differential oil pressure or flow cutout to allow the compressor to operate only when the required oil pressure or flow is provided to the bearings.

g. A temperature- or pressure-initiated, hydraulically actuated, single-slide-valve, capacity-control system to provide minimum automatic capacity modulation from 100 percent to 15 percent.

h. An oil separator and oil return system to remove oil entrained in the refrigerant gas and automatically return the oil to the compressor.

i. Crankcase oil heaters controlled as recommended by the manufacturer.

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2.5.6 Compressor Driver, Electric Motor

Motors, starters, variable speed drives, wiring, etc. shall be in accordance with paragraph ELECTRICAL WORK. Motor starter shall be unit mounted unless indicated otherwise, with starter type, wiring, and accessories coordinated with the chiller manufacturer.

2.5.7 Compressor Driver Connections

Each compressor shall be driven by a V-belt drive or direct connected through a flexible coupling, except that flexible coupling is not required on hermetic units. V-belt drives shall be designed for not less than 150 percent of the driving motor capacity. Flexible couplings shall be of the type that does not require lubrication.

2.5.8 Water Cooler (Evaporator)

Cooler shall be of the shell-and-coil or shell-and-tube type design. Condenser's refrigerant side shall be designed and factory pressure tested to comply with ASHRAE 15 & 34. Condenser's water side shall be designed and factory pressure tested for not less than 150 psi. Cooler shell shall be constructed of seamless or welded steel. Coil bundles shall be totally removable and arranged to drain completely.

Tubes shall be seamless copper, plain, integrally finned with smooth bore or integrally finned with enhanced bore. Each tube shall be individually replaceable. Tubes shall be installed into carbon mild steel tube sheets by rolling. Tube baffles shall be properly spaced to provide adequate tube support and cross flow. Performance shall be based on a water velocity not less than Performance shall be based on a water velocity not less than 3 fps nor more than 12 fps and a fouling factor of 0.0001 h(ft2)(degrees F)/Btu.

2.5.9 Air-Cooled Condenser Coil and Coil Corrosion Protection

Condenser coil shall be of the extended-surface fin-and-tube type with seamless copper tubes and compatible copper fins (copper tubes with aluminum fins prohibited), or of the all-aluminum micro-channel heat exchanger (MCHX) design. The extended-surface fin-and-tube type shall have fins soldered or mechanically bonded to the tubes and installed in a metal casing. Coils shall be circuited and sized for a minimum of 5°F subcooling and full pumpdown capacity. Coil shall be factory leak and pressure tested after assembly in accordance with ASHRAE 15 & 34.

All coils shall be capable of withstanding exposure to the salt spray test specified in ASTM B 117 using a 5% sodium chloride solution for a minimum of 8,000 hours by design or through the use of total encapsulation with a factory- or field-applied aluminum-polyurethane, epoxy electrodeposition or phenolic-type coating. Coat all coil surface areas without material bridging between fins. Application shall be by experienced applicators of a company specializing in such work, and shall show no evidence of softening, blistering, cracking, crazing, flaking, loss of adhesion or “bridging” between the fins.

2.5.10 Heat Recovery Condenser Coil (If Indicated)

Condenser shall be of the shell-and-coil or shell-and-tube type design and shall not be a part of the standard condenser. Condenser shall be provided and installed by the chiller manufacturer.

Condenser's refrigerant side shall be designed and factory pressure tested to comply with ASHRAE 15 &

1393307087C Highlight

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34. Condenser's water side shall be designed and factory pressure tested for not less than 150 psi.

Condenser shall have performance characteristics as…