Scope_of_Work_ _Exhibits.pdf

GSA Public Buildings Service Greater Southwest Region Houston, TX Service Center

Installation of 250.0 Ton Magnetic Levitation Chiller

TX0101ZZ

Bob Casey Federal Building and Courthouse Building 515 Rusk Avenue Houston, TX

Date: 10 Dec 2015 Prepared by: Novell Brown/Dana Ulanoff

SCOPE OF WORK

The Contractor shall provide all materials, supplies, labor, equipment and supervision, necessary to install new 250 ton three (3) compressors magnetic levitation Chiller, condenser water and chilled water pump.

Upon completion of the project, this chiller shall be connected to the common building chilled water loop and building automation system.

New Chiller Requirements 250 tons of cooling Evaporator EWT/LWT (F) 54.0/44.0 Evaporator GPM – 596.3 Evaporator Pressure Drop (Not to exceed) 7.53 psi

Condenser EWT/LWT (F) 86/96 Condenser GPM – 717.1 Condenser Pressure Drop (Not to exceed) - 8.77 psi

Note:

Minimum three compressor chiller Chiller selections must be submitted with bid Chiller selection for each Chiller must not exceed the pressure drop and ILPV in Exhibit A

A. Alterations

1. Provide and install one each 250 ton nominal capacity three compressor water cooled chiller with factory supplied evaporator/condenser water box and insulation option 1.5 inch. Installation shall be/have but not limited to:

a. Equal to or better than magnetic bearing Frictionless Centrifugal Chillers part # WA074.3BG04.F2AKJA.F2AMJA.0N0 (See Exhibit A. The exhibit is provided as an example only. Proposed chiller must meet all of the specifications listed in this Scope of Work).

b. Oil free, magnetic bearing, magnetic high-speed variable speed centrifugal compressor(s).

c. 460 volts, 3 phase

d. Compressor suction and discharge isolation valves.

e. Step-less capacity control using multi-compressors, inlet guide vanes, and internal variable speed drives.

f. Environmentally friendly refrigerant.

g. Cleanable flooded evaporator providing low temperature approach and built to

ASME standard.

h. Water cooled cleanable shell and tube condenser built to ASME standard

i. High resolution electronic expansion valve(s).

j. 1.5 inch minimum closed cell insulation to prevent external condensation.

k. Advanced Control System including integrated communication with compressor for precise capacity control and operational safeties.

l. 12" color graphical interface with panel mounted touch-screen.

m. BACnet interface between the chiller and the BAS.

n. Single point electrical entry.

o. Full refrigerant charge.

p. Chilled water: IFM – Thermal Dispersion Switch

q. Condenser water: IFM – Thermal Dispersion Switch

r. Dual pressure relief valves on evaporator and condenser

s. Factory startup by a certified startup agent

t. 5-year full chiller parts and labor warranty (including compressors)

u. 5-year refrigerant warranty

v. Factory installed epoxy coating on the condenser tube sheets, marine water boxes and end plates.

w. Provide and install all necessary piping and insulation to match existing profiles. Provide and install all necessary piping hangers and/or support for new piping. Include new valve tags IAW current Valve Tag Schedule in the control room. Paint all piping to match existing color scheme. Paint color selection to be provided by GSA.

x. Chiller: Provide and install all necessary water thermowell connections and include new thermometers and pressure gauges (4 thermometers/4 gauges) with associated hardware to provide shut off and removal during gauge removal. Replace existing manual isolation valves with new manual isolation valves (4 each) and properly sized expansion devices 4 each. Install DDC automated 2 way valve on the condenser water line and chilled water line.

Total Two (2)

y. Provide and install all necessary and properly sized electrical conduit and electrical wiring for new chiller. Contractor will be responsible to verify existing electrical power and/or circuit breakers will handle new chiller’s electrical voltage and amperage.

z. Provide and install properly sized transformers, electrical panel(s) and circuit breakers for new chillers as needed. Provide new panel schedules reflecting work accomplished. Contractor will repaint the chiller housekeeping pad with epoxy paint. Approved paint/epoxy submittals are required.

2. The new chiller’s control system shall communicate with existing building automated system. Replacement Chillers shall be wired to and communicate by BACNet directly to the Building's Niagara JACE Controller. The Chillers shall not be linked through a propriety building system controller. Contractor will be responsible to verify the existing BAS and provide all necessary wiring, controls and BACNet cards (if needed) to integrate chiller’s controls to BAS. The BAS Integration Contractor shall include any mapping and linking changes of the Magnetic Levitation Chiller on the graphics page of this building BAS including new piping, chiller layout and cooling tower. Contractor is responsible for licensing fee and drivers to connect/communicate BACNet to the existing JACE. Chiller display/ chiller history/trending shall be connected to the BAS for viewing and controlling. Provide the tonnage with the chiller graphic (ex: Smardt 250 Ton). Include links to the chiller history logs on the central plant page so that access to the trends is easily opened for analysis. The Contractor shall program the existing and any new feedback points using BACNET protocol intergraded into the existing BAS. The new chiller’s control system shall communicate with existing building automated system. Contractor will be responsible to verify the existing BAS and provide all necessary wiring, controls, and/or BACNet cards (if needed) to integrate chiller’s controls to BAS. Automated valves shall provide reporting feedback on current status, history screens, and valve icons shall be visible on the BAS central plant page. All analog histories of new Chiller points shall be recorded in 15 minute intervals and stored in the building JACE controller for 14 days. All discrete point histories shall be recorded both as 15 minute interval, 14 day FIFO history logs but also as COV histories storing 100 intervals within the JACE. All new Chiller point histories shall be exported daily from the JACE to the hosting GSA BAS Server and to the GSA AMS Application for long term archival storage.

a. This new chiller shall be controlled by the BAS and be added to the sequence of operation. The chiller control panel/gateway and all its points shall be added to the BAS. The new sequence of operation shall be integrated into the BAS.

(See Exhibit B for the new sequence of operation)

b. Install new vertical in-line condenser water pump and chilled water pump including new VFD for each pump. The VFD shall be integrated into the BAS and control the chiller’s design pressure drop across the chiller and condenser. The VFD drive shall include an electrical bypass. The new pumps shall include a triple duty valve on the discharge side of the pump and have an inlet strainer box/flow guide vanes. Pressure gauges and isolation valves shall be installed on the inlet and outlet side of the pump. A construction strainer shall be installed for each pump and operate for a minimum of 12 hours before the non-construction strainer is installed The condenser pump shall be 720 GPM with 125 feet of head. The chilled water pump shall be 600 GPM with 110 feet of head.

c. Install new fast action (20) seconds or less from fully open to fully closed) automatic isolation valves (two positions) on the condenser and chilled water line for this chiller and incorporate in the BAS (Total two). These valves will eliminate water flowing through a chiller that is not operating. Actuator(s) shall have feedback signal for valve position and connected to the building automation system and displayed on the graphics page.

d. Contractor will be responsible to setting the pressure drop across the evaporator and condenser water heat exchanger by programing the VFD and associated pressure differential controller.

e. Refrigerant Monitor- Contractor is responsible for modifying the existing refrigerant monitor to add additional sensors for this new chiller installation. If the existing monitor cannot add any additional sensors for this new chiller, contractor shall replace the existing monitor with a model that is capable of enough sensors for the existing chillers and this new chiller. This includes adding to the BAS.

f. New condenser water lines shall be primed and painted to match existing condenser water piping. New chilled water lines shall be insulated with same thickness insulation to match existing insulation. New piping shall include labeling indicate flow direction and fluid.

(Example: Condenser Water Supply, Condenser Water Return, Chilled Water Supply, Chilled Water Return and etc. Match existing plant labeling scheme)

g. Once the Chiller is fully operational, Contractor shall perform all required adjustments / balancing in accordance with manufacturer’s specifications and re-balance the water flow. Contractor shall provide a commissioning and re-balance report to GSA Project Manager.

h. Contractor shall provide a complete commissioning report to GSA Project manager once chiller is fully operational. All adjustments and balancing to the system shall be in accordance with manufacturer’s specifications.

Notes:

Security Requirements: Contractor personnel performing work on the BAS under this contract must possess HSPD-12 Clearance and GAC Cards in order to access GSA secured networks and sites.

Integration Technician: Integration technician performing installation shall be certified on the Niagara AX JACE for both installation and maintenance of the system and shall have a minimum of 3 years’ experience performing the required tasks. The Contractor shall provide with their offer the integration technician’s resume and certification documentation.

B. Specifications and Requirements

1. Valves connections, accessories and operators

i. Provide threaded ends for valves 2.5 inches and smaller

ii. Provide flanged or grooved ends for valves 3 inch and larger

iii. For butterfly valves (isolation valves) provide lever handle, infinitely adjustable with lock nut and memory stop. Provide hot dipped galvanized extension stems, valve handles and gear actuators outdoors. Provide weatherproof galvanized cast iron gear operators for valves mounted outdoors.

2. DDC Automatic isolation valves:

i. Type of end fitting: pattern to mate with ANSI 125 flange.

ii. Cast iron GG25 with stainless steel stem and ball.

3. Pipe insulation- Match existing size/type/color scheme and labeling.

4. Steel pipe and fittings:

i. Steel pipe, DN 50 (NPS 2) and smaller: ASTM A 53, type S (seamless) or type F (furnace butt welded), grade B, schedule 40, black steel, plain ends.

ii. Steel Pipe, DN 65 through DN 300 (NPS 2-1/2 through NPS 12): ASTM A 53, type E (electric-resistance welded), Grade B, Schedule 40, black steel, plain ends.

iii. Steel Pipe Nipples: ASTM A 733, made of ASTM A 53, Schedule 40, black steel; electric-resistance welded for DN 65 (NPS 2-1/2) and larger.

iv. Cast-Iron Threaded Fittings: ASME B16.4; Classes 125 and 250.

Malleable-Iron Threaded Fittings: ASME B16.3, Classes 150 and 300.

MATERIAL TECHNICAL SPECIFICATIONS

Where a particular manufacturer's product is specified, it is not intended to discriminate against other manufacturer's which are equal in quality of material, workmanship, appearance and function to those specified. Rather, it is intended to establish and indicate the desired standard of quality. If any tests are required to determine the equality of any substitutes, such tests shall be made by an independent authority as approved by the government. All expenses related to proposed substitutions shall to be paid by the Contractor. Proposed items are to be submitted with the bid and shall be a basis for the award of the contract.

All materials and equipment shall bear evidence of the Underwriter's Laboratories Inc. Label (UL) or approval of other nationally recognized independent testing organizations adequately equipped and competent to perform such services when these standards are required and such product listing is available.

PRODUCT DATA AND SAMPLES

1. Product Data: Contractor shall submit one electronic set of chiller product data including any valves, piping, insulation, BAS hardware, refrigerant monitoring system, catalog sheets, brochures, performance charts or other standard descriptive data provided by any Subcontractor, supplier or distributor. Product Data must be certified by the Contractor stating that it was reviewed and approved. Product to be used must be highlighted on the data sheet by the Contractor. Product Data used for construction must bear GSA’s stamp certifying final review and approval. No product shall be used that does not bear such stamp. Submittals shall be identified on a submittal register provided by the Contractor and transmitted using a transmittal letter.

2. Samples: Contractor shall submit physical samples establishing standards by which completed work is judged. Samples shall indicate color range, functional characteristics and shall represent exact material to be used on the project.

PERFORMANCE REQUIREMENT

1. The Contractor shall field verify existing conditions prior to any demolition.

2. Safety Plan: Contractor shall submit a crane safety plan (if applicable) for crane erection and use.

Include preferred location for crane set up, operator certification credentials, and crane inspection/certification documentation.

3. The Contractor shall be responsible for coordinating all activities of subcontractors. This responsibility includes coordination of; preparation of shop drawings preparation of shop drawings produced by different subcontractors where their work interfaces or may potentially conflict or interfere and the installation of such work; scheduling of work by subcontractors and use of the Project site for staging and logistics.

4. Contractor to provide a work plan within thirty (30) days of partial Notice to Proceed (NTP) identifying equipment access plan, CHWP / CWP piping tie-in and electrical tie-in for review and acceptance prior to installation.

5. Contractor to provide schedule of values within thirty (30) days of partial Notice of Proceed (NTP).

The Contractor shall prepare and submit for approval a detail cost breakdown of the Contract price, to be referred to as the Schedule of Valves, assigning values to each component of the Work.

Values must include all direct and indirect cost, although a separate value for bond cost may be established. The Schedule of Valves must contain sufficient detail to enable the Project Manager to evaluate applications for payment. Before submitting a request for payment, the Contractor shall schedule a pencil copy review with the Project Manager for review and acceptance.

6. Once the chiller is fully operational the Contractor shall be responsible to provide a report to GSA Project Manager for the following: Re-balance water flow, Manufacturer’s Start-up Check-list and Commissioning (all adjustments and balancing to the system shall be in accordance with manufacturer requirements)

7. The contractor shall reinstall existing access panels; etc., back to their original location and condition after all work is completed.

8. The contractor shall remove and dispose of all construction debris as it accumulates on a daily basis.

9. Upon completion of work the contactor shall leave the premised clean and free of any debris.

SPECIAL INSTRUCTIONS

Contractors shall submit proposal with a detailed cost breakdown. Cost Breakdown shall be submitted in CSI Master Format 2010. Proposal shall include make and model of all proposed equipment. Chiller selection shall include IPLV rating and pressure drops within submitted proposal.

Chiller selection shall be submitted at time of bid. Chiller selection submitted at the bid shall not exceed the pressure drop indicated in the SOW and the chiller energy efficiency (IPLV) shall be equal to or better than the chiller specifications in the exhibit.

Contractor will be responsible to request and furnish all required overhead and/or road blocking permits from the City of Houston and or electrical/utility providers when using a crane at this location if the city street requires a blockage when off-loading the chiller.

SECURITY CLEARANCE REQUIREMENT

All Contractor personnel performing working on premises at GSA owned and operated buildings are required to pass a security background check conducted by the Department of Homeland Security/Federal Protective Service. No Contractor employee will be allowed to perform work on the building premises until employee has been determined to be suitable for hire by the Department of Homeland Security/Federal Protective Service.

WORKING HOURS

Work not impacting normal building occupancy shall be performed during normal business hours Monday through Friday 7:00 am to 6:00 pm. All scheduled demolition and delivery of Chiller(s) shall take place during unoccupied times. (Recommended over an weekend) Any work affecting normal building occupancy needs to be scheduled after normal business hours/weekends and approved by GSA building manager.

PERIOD OF PERFORMANACE

All work shall be completed within 30 calendar days after Chiller delivery. It is estimated that it will take 12- 14 weeks to manufacture the chiller. A partial NTP will be issued to place the order on the equipment upon approved submittals.

LIQUIDATED DAMAGES

If substantial completion is not achieved, the Contracting Officer may assess liquidated damages at a rate of $160 per day.

PROJECT SCHEDULE

Contractor shall submit to the GSA Project Manager a project schedule within thirty (30) days of partial Notice of Proceed. The project schedule shall include a written narrative describing the major work activities, activities critical path and major constraints underlying the sequence and logic, all tasks to be performed under this project, duration of each task and tentative date/s each task will be performed. Project schedule must be approved by the GSA Project Manager prior to performing any work under this project. The project schedule shall incorporate milestone events specifics in the Contract, including as applicable NTP, Substantial Completion and milestones related to specific work phases and site restrictions. The project schedule shall also include Contractor-defined milestones to identify target dates for critical events, based upon the Contractor’s chosen sequence of work. Microsoft Project or other similar format can be used for this schedule.

EXTENSION OF TIME

If the Contractor requests an extension of the time for Substantial Completion, the Contractor shall base its request on analysis of time impact using the Project Schedule as its baseline, and shall propose as a new Substantial Completion date to account for the impact. The Contractor shall submit a written request to the Contracting Officer setting forth facts and analysis in sufficient detail to enable the Contracting Officer to evaluate the Contractor’s entitlement to an extension of time.

C. General Construction Requirements

1. Keep work areas clean on a daily basis.

2. Remove debris from site on a daily basis.

3. Protect all existing walls and furniture from damage.

4. Contractor is responsible for all damages to government property caused by him/her and their subcontractors.

5. Contractor is responsible for all dimensions and quantities.

6. Contractor shall field verify all existing conditions prior to submitting a bid.

CONSTRUCTION WASTE MANAGEMENT PLAN SPECIFICS (AFTER CONTRACT AWARD)

1. Fourteen days (14) from Notice to proceed, the Contractor shall submit to the Project Manager, a draft Waste Management Plan for mixed debris recycling to GSA approval. The plan shall include (but not be limited to) the following: List of the materials to be reused or recycled.

2. The Contractor will record and track the type and quantity, by weight or each material salvaged, reused, recycled or disposed throughout the project. The Contractor shall provide a Construction Management Waste Management Report upon request of Substantial Completion.

D. Final Preparations

1. Contractor shall provide both classroom and hands-on training at a minimum six (6) hours to training to GSA maintenance personnel.

2. Contactor shall provide two (2) sets of as-built drawings on compact disk (CD). As-built drawings shall be in Auto CAD format and shall illustrate all alterations performed under this contract. Final payment will not be authorized until all as-built drawings are provided.

3. Contractor shall provide three (3) copies of owner’s (O&M) manuals for new equipment.

4. Contractor shall return all GSA Badges issued for this project. Final payment will not be authorized until all O&M manuals and badges are provided and returned.

PRE-PROPOSAL CONFERENCE

Interested parties must notify the Contracting Officer for further information about attendance and to confirm location, time and date. Only those parties who have notified the Contracting Officer and provided necessary information in advance of the meeting will be allowed to attend. Contractors are encouraged to verify all existing conditions at the job site prior to bidding on project. Failure to do so will not relieve Contractor of any responsibility to properly estimate the cost of this project.

Note:

The following items will be addressed at the Pre-bid Conference and again at a Pre-work Conference:

1. On site storage.

2. Parking.

3. Use of elevators.

4. Access through secured area.

5. Contractor shall coordinate with the GSA mechanical maintenance Contractor, for placing the fire alarm system in test mode prior to performing any work that may result in the activation of an alarm signal from the fire alarm system including but not limited to: connecting devices to fire alarm system, cutting, welding or other work that creates excessive dust. Contractor is responsible for all costs associated with placing the fire alarm system in test mode.

6. A GSA approved welding permit will be required before performing any cutting and welding.

Contractor shall contact the GSA Project Manager and Building Manger at least 48 hours in advance to request a permit for cutting and welding.

7. Contractor shall be responsible for all quantities, measurements, correct installation of all items and for any damages to the building, items such as parked vehicles and surrounding areas.

8. All materials, equipment and supplies to be incorporated into work under the terms of this contract shall have been “NEW” and “UNUSED” at time of award.

9. Materials of equipment containing asbestos in any form shall not be incorporated into this project.

10. All material, workmanship and equipment shall be subject to the inspection and approval by the

Contracting Officer Representative. All work unsatisfactorily performed shall be promptly corrected and made acceptable for the Government.

APPLICABLE PUBLICATIONS

A. Department of Labor:

1. Occupational and Health Standards: (29 CFR part 1926).

2. Safety and Health Regulations for Construction: (29CFR part 1518).

3. Federal Code:

All renovations shall be in accordance with the current design requirements as found in the Federal Construction & Safety Standard, and Third Party approved structure design package.

Latest Edition of the following Codes/Regulations:

4. Fire Codes: All units shall meet or exceed all required Federal, State and Local Fire Codes.

5. Housing & Urban Development (HUD 24 CFR 3280).

6. National Electrical Code (NEC).

7. International Building Code (IBC).

8. International Mechanical Code (IMC).

9. International Plumbing Code (IPC).

10. American Society of Heating, Refrigeration and Air Conditioning (ASHRA).

11. Occupational and Safety Act (OSHA).

12. National Fire Protection Association (NFPA).

13. U.S. Environmental Protection Agency (EPA), “Mold Remediation in Schools and Commercial

Buildings”.

B. Manufacture, installation and testing shall comply with manufacturer’s instructions and standards. When more stringent requirements are call for either this S.O.W. or codes and regulations, the priority of precedence in compliance shall be:

1. Federal Requirements.

2. State Requirements.

3. Local Requirements.

4. Manufacturer’s Requirements.

5. Contractor’s Requirements.

DISCLOSURE OF INFORMATION

1. Any information made available to the Contractor by the government shall be used only for the purpose of carrying out the provisions of this contract. This information shall not be divulged or made known in any manner to any persons except as may be necessary in the performance of the contract.

2. In the performance of this contract the Contractor assumes responsibility for the protection of the confidentiality of government records.

3. The Contractor shall adhere to the requirements found in Part 24 of the Federal Acquisition Regulation, Protection of Privacy and Freedom of Information.

WARRANTY

1. All workmanship and materials shall be warranted for a period of not less than three hundred sixty five (365) days from date of acceptance by the Government (Standard Warranty) plus extended compressor parts and labor warranty (4 years).

2. The Contractor shall provide a copy of warranty of items procured. Warranty shall be in writing and shall include any conditions which may invalidate the warranty.

3. Warranty shall include procedures on how to exercise warranty rights. Provide points of contact in order to get services required.

4. Standard warranty shall be all inclusive of parts, labor and materials, related coverage and additional costs, if any.

5. Contractor shall provide all applicable manufacturers’ warranties at time of completion.

END OF SCOPE OF WORK

BOB CASEY FEDERAL BUILDING AND COURTHOUSE

INSTALLATION OF 250 TON – MAGNETIC LEVATITION CHILLER

EXHIBIT A

PART NUMBER DESCRIPTION

WA074.3BG04.F2AKJA.F2AMJA.0N0 Water Cooled Chiller

INCLUDED BY SMARDT:

• Chiller(s) to be shipped Standard - Unit shipped fully assembled

• Chillers are ETL listed and certified to CSA C22.2 No.236

• Conforming to ANSI/UL 1995

• Power connection style: Single Point Power Connection

• Nema 1 Control enclosures - indoor use only

• Mechanical HP/LP switch.

• ASME certified horizontal shell-and-tube heat exchangers.

• Supporting baffles inside Standard EVAP and COND tubesheets

• High efficiency enhanced tubes

• Evaporator Insulation: Standard Thermal Insulation 1.5" (38mm)

• Evaporator marine water boxes rated to 145psig fitted with Grooved Pipe Connection

• Condenser marine water boxes rated to 145psig fitted with Grooved Pipe Connection

• Epoxy coated evap and cond water boxes

• Chilled water : IFM – Thermal Dispersion Switch

• Condenser water : IFM – Thermal Dispersion Switch

• Dual pressure relief valves on evaporator and condenser mounted on changeover valve.

• Factory Startup: Certified Startup Agent

• Connectivity: BacNet

• 5 year machine and compressor parts and labor warranty

• 5 year refrigerant warranty

NOT INCLUDED BY SMARDT:

• Vibration isolation pad (not required by manufacturer)

• Rigging and providing access for equipment.

• Piping from refrigerant pressure relief valves to outside.

• Grooved flange couplings.

• Refrigerant monitor.

• Seismic certification.

• Performance test.

• Sound test.

• Harmonic or EMI Filters

• Extended warranties.

• Any other item not mentioned above.

PERFORMANCE INFORMATION

Description Capacity Model Centrifugal liquid chiller 250.0 tonsR WA074.3BG04.F2AKJA.F2AMJA.0N0

Options W23 | E7 | C7 |

XXXXXXXXXXXXX.XXXX.XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.XXXXXXXXXXX.XXXXXXXXXXXXXXX

Evaporator Data Fluid Type Water Fluid Concentration (%) 0% Flow Rate 596.3 US gpm Tube Material Cu 0.025” Enhanced Surface Entering Fluid Temp 54.0°F Tube Wall Thickness 0.025Inch

Leaving Fluid Temp 44.0°F Circuit number of passes Two(2)

Fouling Factor 0.00010 h•ft²•ºF/Btu Constant speed flow min (pressure drop at flow) 290.5 USGPM (1.73 PSI)

Pressure Drop 7.53 psi (17.36 ft H2O) Variable speed flow min (pressure drop at flow) 190.6 USGPM (0.77 PSI)

Condenser Data Fluid Type Water Fluid Concentration (%) 0% Flow Rate 717.1 US gpm Tube Material Cu 0.025” Enhanced Surface Entering Fluid Temp 86.0°F Tube Wall Thickness 0.025Inch Leaving Fluid Temp 96.0°F Circuit number of passes Two(2)

Fouling Factor 0.00025 h•ft²•ºF/Btu Constant speed flow min (pressure drop at flow) 298.3 USGPM (0.64 PSI)

Pressure Drop 8.77 psi (20.23 ft H2O) Variable speed flow min (pressure drop at flow) 195.8 USGPM (0.28 PSI)

Physical Data Length(ft) See product drawing Weight (Empty) 8181 lbs Width(ft) See product drawing Weight (Operating) 9475 lbs Height(ft) See product drawing Refrigerant Charge 635 lbs

Equipment Details

Capacity(TR) 250.0 tonsR Type of compressor TT300-G4-1-ST-E-O-NC

Unit Power(kW) 169.7 kW Full load Efficiency 0.679 kW/tonsR

Number of compressors 3 Compressor Efficiency 0.678 kW/tonsR Compressor Power (kW) each 56.6 kW HFC 134a

Unit power characteristics

Supply Power 460 V MCA 257 A

Amps 237 A MOCP 336 A

15.1.0.0

AHRI CERTFIED PER 550/590

Program Scope

1.3.1 Program Scope Inclusions.

1.3.1.1 60 Hz WCCL Product Inclusions.

• All compressor types;

• Chillers rated with capacities >0 and ≤3000 tonsa [10,551 kW]b;

• Hermetic & open type, electric motor driven;

• Units selected for use within the range of Application Rating Conditions as per the Standard (part-load performance no less than 25% of the rated full load capacity);

• Chillers with voltages ≤15,000 volts; and

• Positive Displacement Units intended for use with glycol or other secondary coolant for freeze protection with a leaving chilled fluid temperature above 32°F [0°C] are certified when tested with water at Standard Rating Conditions.

a. Capacity refers to the capacity of Packaged Units rated at full load AHRI Standard 550/590 (I-P) Rating

Conditions and the capacity of Configurable Units rated at application full load operating conditions provided these conditions are within the scope of AHRI Standard 550/590 (I-P).

b. kW conversions provided for reference only.

1.3.1.2 50 Hz WCCL Product Inclusions

• All compressor types;

• Chillers rated with capacities ≥200 and ≤3000 tonsa [703 and 10,551 kW]b;

• Optional certification for chillers rated with capacities >0 and <200 tonsa [703kW]b (The Certify-All Policy does not apply to these units.);

• Hermetic & open type, electric motor driven;

• Units selected for use within the range of application rating conditions as per the Standard (part-load performance no less than 25% of the rated full load capacity);

• Chillers with voltages ≤15,000 volts; and

• Positive Displacement Units intended for use with glycol or other secondary coolant for freeze protection with a leaving chilled fluid temperature above 32°F [0°C] are certified when tested with water at Standard Rating Conditions.

a. Capacity refers to the capacity of Packaged Units rated at full load AHRI Standard 550/590 (I-P) Rating

Conditions and the capacity of Configurable Units rated at application full load operating conditions provided these conditions are within the scope of AHRI Standard 550/590 (I-P).

b. kW conversions provided for reference only.

1.3.2 Program Scope Exclusions. The following are exclusions for 50 Hz and 60 Hz WCCL products:

• Condenserless chillers;

• Evaporatively-cooled chillers;

• Chillers that are not electrically driven

• Chillers with motors not supplied with the unit by the Participant; and

• Heat recovery & heat pump ratings are not certified; however, Participants may elect to certify these chillers in the cooling mode with this option turned off.

• Units with condensers intended for use with glycol or other secondary coolants.

• Units with evaporators intended for use with glycol or other secondary coolants not included in Sections

1.3.1.1 and 1.3.1.2.

Certified in accordance with the AHRI Water-Cooled Water Chilling Packages Using Vapor Compression Cycle Certification Program, which is based on AHRI Standard 550/590 (I-P) and AHRI Standard 551/591 (SI). Certified units may be found in the AHRI Directory at www.ahridirectory.org

WA074.3BG04.F2AKJA.F2AMJA.0N0

IPLV : 0.350 kW/tonsR (34.3 EER)

% Load Capacity Perf kW Chw Flow Chw In Chw Out Cw Flow Cw In Cw Out

100 250.0 0.661 165.23 600.00 53.95 44.01 750.00 84.99 94.46 75 187.5 0.449 84.14 600.00 51.46 44.01 750.00 75.02 81.76 50 125.0 0.295 36.87 600.00 48.98 44.01 750.00 64.94 69.26 25 62.5 0.316 19.77 600.00 46.49 44.01 750.00 64.94 67.11

NPLV : 0.353 kW/tonsR (34.0 EER)

Flow Chw In Chw Out Cw Flow Cw In Cw Out

100 250.0 0.679 169.65 596.31 54.01 44.00 717.14 86.00 96.00 75 187.5 0.456 85.43 596.31 51.50 44.00 717.14 75.47 82.53 50 125.0 0.297 37.10 596.31 49.00 44.00 717.14 64.94 69.46 25 62.5 0.317 19.80 596.31 46.50 44.00 717.14 64.94 67.21

PPLV : 0.353 kW/tonsR (34.0 EER)

Flow Chw In Chw Out Cw Flow Cw In Cw Out

100 250.0 0.679 169.65 596.31 54.00 44.00 717.14 86.00 96.00 75 187.5 0.456 85.43 596.31 51.50 44.00 717.14 75.47 82.53 50 125.0 0.297 37.10 596.31 49.00 44.00 717.14 64.94 69.46 25 62.5 0.317 19.80 596.31 46.50 44.00 717.14 64.94 67.21

Sound Data Description Global 60 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz Lw dB 89.9 70.8 85.3 81.8 78.4 83.2 77.7 79 78 Lw dB(A) 87 44.6 69.2 73.2 75.2 83.2 78.9 80 76.9 Lp dB(A) at

3.3 ft 79 36.6 61.2 65.2 67.2 75.2 70.9 72 68.9

10 Point Part Load Value : 0.353 kW/tonsR (34.0 EER) Loa d

Capacity , tonsR kW/ton R kW

Evaporato r Flow, US gpm

Evaporato r In Temp, °F

Evaporato r Out Temp, °F

Condense r Flow, US gpm

Condense r In Temp, °F

Condense r Out Temp, °F

100 250.0 0.679 169.6 5 596.31 54.00 44.00 717.11 86.00 96.00

90 225.0 0.573 128.8 6 596.26 53.00 44.00 724.04 81.79 90.43

80 200.0 0.516 103.2 4 596.21 52.00 44.00 727.39 80.00 87.54

70 175.0 0.491 85.86 596.16 51.00 44.00 735.15 80.00 86.48 60 150.0 0.474 71.17 596.11 50.00 44.00 741.21 80.00 85.49 50 125.0 0.466 58.23 596.06 49.00 44.00 752.69 80.00 84.50 40 100.0 0.448 44.82 596.02 48.00 44.00 750.73 80.00 83.60 30 75.0 0.486 36.42 595.97 47.00 44.00 757.45 80.00 82.69 20 50.0 0.424 21.19 595.92 46.00 44.00 749.45 80.00 81.79 10 25.0 0.440 11.00 595.87 45.00 44.00 739.45 80.00 80.91 Note: Part load entering condenser water temperatures vary linearly from design at 100% load to 64.95 °F at 50% load, and fixed at 64.95 °F for 50% to 0% loads.

5757 ·

DIMENSIONS

L W W/Flash Econ H

141.5 in 51.3 in 67.3 in 80.7 in A B C D

13.5 in 27.6 in 8.9 in 13.9 in

EVAPORATOR CONDENSER

IN OUT IN OUT

6.0 in 6.0 in 6.0 in 6.0 in

W/Flash Econ

EXHIBIT B

CHILLED WATER SYSTEM

Chilled Water System

The existing chilled water system includes two chillers, two primary chilled water pumps, two condenser water pumps, and a two cell cooling tower. Chillers 1 & 2 each have a motorized isolation valves on the chilled and condenser water inlets and operate with CHP-1 & 2 and CWP-1 & 2.

The control system will sequence the chillers to maintain adequate chilled water supply to the AHU’s and other chilled water cooling units.

Chilled Water System Control:

System Enable / Disable:

The chilled water system will be enabled when any associated air unit is operating. The operator will also have manual start / stop control from the BAS control system. When the chilled water system is disabled, the chillers, pumps, and cooling tower fans will be off. The chilled and condenser water isolation valves for the lead chiller will remain open to ensure flow path in event a pump is started. Note- On a command to shut any chiller off, the pump shall run for an additional 1 minute then the pump and associated valve shall shut off and valve closed

Lead / Lag System Selection:

The lead and lag Chiller, Chilled Water Pump, Condenser Water Pump, and Cooling Tower will be selected either manually or automatically weekly based upon system run time. In the case of automatic rotation, rotation will only occur when both systems are off. Each of the above will be capable of being set independently of other equipment.

Lead/Lag Chiller Operation:

When the system is enabled, the lead chiller will be enabled. When the chiller is enabled, it will signal the BAS to open its associated chilled and condenser water isolation valves, and start the associated chilled and condenser water pumps. The lead system will remain on until all of the associated air units are off, or the system is manually commanded off.

The chiller will operate on its internal operating and safety controls to maintain leaving water temperature 45 degF. Adjustable from the BAS Chiller Plant graphics page.

When the lead chiller reaches 80% of its full load KW’s for 15 consecutive minutes, the lag chiller’s automated condenser/chilled water valves will open. When the valves are fully open the condenser/chilled water pumps shall start. 30 seconds after the pumps are running the lag chiller shall start.

When the load decreases on the lag chiller below 36% of its full load KW for 15 consecutive minutes the lag chiller will turn off, then the condenser/chilled water pumps will shut off, automated isolation valve will be commanded closed. The time and KW settings will be adjustable from the BAS Chiller Plant graphics page.

EXHIBIT B

Chiller Isolation Valve and Pump Operation:

When the chiller is enabled, the chiller will signal the BAS to open the chilled and condenser water isolation valves, and start the associated pump. Once the chilled water pump is activated, it will ramp up to set speed to maintain set system flow. The condenser water pump will be activated, and its speed will be controlled to maintain the refrigerant lift (head pressure). When both chillers are operating, the condenser water pumps will be controlled by the highest speed requested by the chillers. Once the chiller has been enabled, and the isolation valves and pumps are activated, they will remain activated until the chiller enable signal is turned off.