Scope_of_Work_ _Exhibits.pdf

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

Scope of Work

Installation of two 117.0 Ton Magnetic Bearing Chillers

TX0185

ML King JR Federal Building 312 S Main Street Victoria, TX 77901-8151

Date: 3 Dec 2015 Prepared by: Frank Campagna/Dana Ulanoff

SCOPE OF WORK

The Contractor shall provide all materials, supplies, labor, equipment and supervision, necessary to replace existing one (1) air cooled 200 ton chiller with two (2) new water cooled 117 ton magnetic levitation chillers, two condenser water pumps, six (6) VFD’s, step up transformer(s), water treatment controller, water treatment chemical pumps, emergency eye wash, condenser water piping and cooling tower. Upon completion of the project, this chiller shall be connected to the common building chilled water loop and building automation system.

New Chiller Requirements Two (2) new 117 ton mag lev chillers Evaporator EWT/LWT (F) 55.0/45.0 Evaporator GPM – 279.1.

Condenser EWT/LWT (F) 86/96 Condenser GPM – 331.6 Evaporator Pressure Drop (Not to exceed) – 4.84 psi Condenser Pressure Drop (Not to exceed) - 7.06 psi

Note* Contractor shall provide the chiller submittal at time of bid response.

A. Demolition

1. Remove and reclaim refrigerant from an existing (1) 200 ton water cooled chiller.

2. Disconnect all electrical, controls, piping and associated equipment to chiller.

Remove all unused conduit/wiring back to panel boards and provide knock-out plugs at all unused openings.

3. Remove and dispose of properly one 200 ton water cooled chiller located in the mechanical room of the Martin Luther King Jr Federal Building in Victoria, TX.

4. Disconnect all electrical, controls, piping and associated equipment and remove existing cooling towers. Remove all unused conduit/wiring back to panel boards and provide knock-out plugs at all unused openings.

5. Remove and disconnect all electrical, piping and associated equipment for existing CHW & CW pumps.

B. Alterations

1. Replace existing air cooled chiller and provide and install two (2) 117 ton nominal capacity water cooled chillers. Remove existing air cooled condenser and install one (1) single sump two fan 316 stainless steel cooling tower and 5” diameter condenser water piping. Chillers shall be magnetic bearing Frictionless Centrifugal Chillers Specifications for the chillers, transformer(s) and cooling tower are included in the Exhibits A, B, C, D & E

a. Equal to or better than SMARDT Frictionless Centrifugal Chillers part #

WA041.1EG06.F4AQCA.F4APCA.0C0 (See attached Spec Sheet. Spec sheet is provided as an example only. Proposed chiller must meet all of the specifications listed in this section).

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 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 per chiller) with associated hardware to provide shut off and removal during gauge removal. Install DDC automated 2 way valve on the condenser water line and chilled water line for each chiller. Total Four (4) on this project.

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 transformer(s), electrical panel(s) and circuit breakers for new chillers as needed. The chiller being removed is 208 volt 3 phase. The new chillers are 460 volts 3 phase. The step up transformer(s) specifications is in Exhibit A. Provide new panel schedules reflecting work accomplished. Step up transformers shall include (2) new 4” thick housekeeping pads in correct proportion to transformer’s physical size.

aa. 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 117 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. These new chillers/towers/pumps/drives/tower fans shall be controlled by the BAS and be added to the sequence of operation. Exhibit E. 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 E for the new sequence of operation)

b. Install two (2) new vertical in-line condenser water pump including new VFD for each pump. Each new condenser water pump shall be 340 GPM 60 feet of head. Although the existing chilled water pumps will be used for this project, new VFD’s will be installed for these two existing chilled water pumps. The drive will control the pressure drop across the evaporator to maintain the chiller’s design pressure drop. The VFD’s shall be integrated into the BAS and control the chiller’s design pressure drop across condenser and chiller. All the new VFD’s 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. 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 these chillers and incorporate in the BAS (Total four). 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.

c. 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.

d. Refrigerant Monitor- Contractor is responsible for modifying the existing refrigerant monitor to add additional sensors for this new chiller(s) installation. If the existing monitor cannot add any additional sensors and capable of monitoring refrigerant 134A for this new chillers, contractor shall replace the existing monitor with a refrigerant monitor that is capable of adequate number of sensors for the new chillers. New monitor shall be connected to the BAS. New refrigerant monitor shall be connected to the existing strobe lights and audible alarm.

e. Install a new condenser water treatment chemical controller, blow down piping, blow down valve, three (3) chemical injection pumps and chemical containment devices. (Scale Inhibitor, biocide and algaecide) Install new emergency eye wash station at a location approved by the Project Manger.

Provide 90 day supply of chemicals.(Scale Inhibitor, biocide and algaecide) GSA uses a nonacid treatment program. New chemical controller shall be connected to the BAS. Install a water meter to measure condenser water blow down and condenser water makeup. These meters shall be connected to the BAS. The controller and meters shall be included in the BAS graphics page.

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. Condenser lines outside and exposed to the elements shall be primed and painted with exterior grade paint.

(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 both classroom and hands on training at a minimum 6 hours of training to GSA maintenance personnel.

i. 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.

j. Install a Mitsubishi 21 SEER or better ductless mini split heat pump between 22,000-24,000 BTU’s cooling for the chiller mechanical room.

k. Cooling Tower requirements: See Exhibit D for placement and location of the new cooling tower on lower level roof (post office roof). Exhibit D refers to the pier and support detail for the tower support structure. All roofing penetrations shall be implemented a roofing contractor who is authorized by the roofing manufacture. In addition, for fall protection purposes, a personal protective safety rail (4’ x 25’) with corrosion inhibiting materials shall be installed on the roof edge of where cooling tower is located. Submittal is required.

l. Additional cooling tower requirements: electrical enclosure disconnects shall be installed for the cooling tower for each fan motor. These disconnected will be located on or within 15 feet of each tower fan motor. The tower shall have a drain and drain line piping. Minimum 1.5” pipe size piped to a sanitary sewer line. The tower makeup water piping size shall be the size recommended by the tower manufacture. The makeup water line located outside the building and exposed to the outdoor environment shall be insulated and have an aluminum jacketing cover. The source of the makeup water shall be connected to the outlet side of the existing backflow preventer located in the mechanical room. The VFD’s for the tower fans shall be mounted in the chiller mechanical room.

Notes:

1. Additional Items- It’s highly likely this project may require after normal business hours to off load chiller and to replace existing manual isolation valves. It may also require road closure permits by the local city. Plan accordingly.

2. Chiller selection including IPLV rating and pressure drops shall be submitted at the time of the proposal.

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.

C. 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. 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.

D. Final Preparations

1. 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.

2. Contractor shall provide three (3) copies of owner’s (O&M) manuals for the Chiller, VFD and pumps. 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.

E. Special Instructions

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

E. 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.

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 the Contractor of any responsibility to properly estimate the cost of this project.

Note:

The following items will be addressed at the Pre-proposal 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 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.

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. 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 $296 per day.

PROJECT SCHEDULE

Contractor shall submit to the GSA Project Manager a project schedule within thirty (30) days of the Partial Notice to 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. (See Section III.E. Extensions of Time in the Agreement).

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.

3. 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.

CONSTRUCTION WASTE MANAGEMENT PLAN SPECIFICS (AFTER CONTRACT AWARD)

1. Fourteen days (14) after receipt of the partial 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.

PERFORMANCE REQUIREMENT

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

2. The Contractor shall reinstall existing access panels and existing equipment back to their original location and condition after all work is completed.

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

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

5. 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.

6. Contractor to provide a work plan within thirty (30) days of receipt of the 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.

7. Contractor to provide schedule of values within thirty (30) days of receipt of the 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 Values, 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 Values 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.

8. Contractor to provide a work plan within thirty (30) days of receipt of the 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.

9. Once the chillers are 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).

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

October 09, 2015

Smardt Inc · 1840 Trans Canada Hwy · Dorval Qc H9P 1H7 · (514) 426-8989 · Fax (514) 426-5757 ·

Exhibit A

PART NUMBER DESCRIPTION

WA041.1EG06.F4AQCA.F4APCA.0C0 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 inches Evaporator water boxes rated to 145psig fitted with Grooved Pipe Connection Condenser water boxes rated to 145psig fitted with Grooved Pipe Connection Epoxy coated tube sheets and 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 chiller, 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 117.0 tonsR WA041.1EG06.F4AQCA.F4APCA.0C0

Options

W7 | E66 | C33 | XXXXXXXXXXXXX.XXXX.XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.XXXXXXXXXXX.XXXXXXXXXXXXXXX

Evaporator Data

Fluid Type Water Fluid Concentration (%) 0%

Flow Rate 279.1 US gpm Tube Material Cu 0.025” Enhanced Surface

Entering Fluid Temp 55.0°F Tube Wall Thickness 0.025Inch

Leaving Fluid Temp 45.0°F Circuit number of passes Four(4)

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

183.5 USGPM (2.03 PSI)

Pressure Drop 4.84 psi (11.16 ft H2O) Variable speed flow min (pressure drop at flow)

120.4 USGPM (0.90 PSI)

Condenser Data

Fluid Type Water Fluid Concentration (%) 0%

Flow Rate 331.6 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 Four(4)

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

166.2 USGPM (0.78 PSI)

Pressure Drop 7.06 psi (16.28 ft H2O) Variable speed flow min (pressure drop at flow)

109.1 USGPM (0.35 PSI)

Physical Data

Length(ft) See product drawing Weight (Empty) 6246 lbs

Width(ft) See product drawing Weight (Operating) 7121 lbs

Height(ft) See product drawing Refrigerant Charge 271 lbs

Equipment Details

Capacity(TR) 117.0 tonsR Type of compressor TT350-G6-1-HL-E-O-NC

Unit Power(kW) 73.4 kW Full load Efficiency 0.627 kW/tonsR

Number of compressors 1 Compressor Efficiency 0.627 kW/tonsR

Compressor Power (kW) each

73.4 kW HFC 134a

Unit power characteristics

Supply Power 460 V MCA 133 A

Amps 106 A MOCP 239 A

15.1.0.0 October 09, 2015

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.

Notes:

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.

Notes:

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

WA041.1EG06.F4AQCA.F4APCA.0C0

15.1.0.0

IPLV : 0.346 kW/tonsR (34.7 EER)

% Load Capacity Perf kW Chw Flow

Chw In Chw Out Cw Flow Cw In Cw Out

100 117.0 0.631 73.78 280.80 53.95 44.01 351.00 84.99 94.39

75 87.7 0.427 37.46 280.80 51.46 44.01 351.00 75.02 81.72

50 58.5 0.298 17.44 280.80 48.98 44.01 351.00 64.94 69.26

25 29.2 0.317 9.26 280.80 46.49 44.01 351.00 64.94 67.11

NPLV : 0.340 kW/tonsR (35.3 EER)

% Load Capacity Perf kW Chw Flow

Chw In Chw Out Cw Flow Cw In Cw Out

100 117.0 0.627 73.37 279.12 55.01 45.00 331.60 86.00 96.00

75 87.7 0.423 37.12 279.12 52.50 45.00 331.60 75.47 82.56

50 58.5 0.290 16.99 279.12 50.00 45.00 331.60 64.94 69.50

25 29.2 0.316 * 9.25 279.12 47.50 45.00 331.60 64.94 67.24

PPLV : 0.340 kW/tonsR (35.3 EER)

% Load Capacity Perf kW Chw Flow

Chw In Chw Out Cw Flow Cw In Cw Out

100 117.0 0.627 73.38 279.12 55.00 45.00 331.60 86.00 96.00

75 87.7 0.423 37.12 279.12 52.50 45.00 331.60 75.47 82.56

50 58.5 0.290 16.99 279.12 50.00 45.00 331.60 64.94 69.50

25 29.2 0.316 * 9.25 279.12 47.50 45.00 331.60 64.94 67.24

Sound Data

Description Global 63 Hz 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz

Lw dB 86 74.5 74.1 76.6 77.4 81.5 77.8 70.9 74.7

Lw dB(A) 84.7 48.3 58 68 74.2 81.5 79 71.9 73.6

Lp dB(A) at

3.3 ft

76.7 40.3 50 60 66.2 73.5 71 63.9 65.6

10 Point Part Load Value : 0.340 kW/tonsR (35.3 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

100 117.0 0.627 73.3

279.12 55.00 45.00 331.60 86.00 96.00

90 105.3 0.534 56.2

279.12 54.00 45.00 331.60 81.79 90.53

80 93.6 0.457 42.7

279.12 53.00 45.00 331.60 77.58 85.20

70 81.9 0.393 32.1

279.12 52.00 45.00 331.60 73.36 79.93

60 70.2 0.338 23.7

279.12 51.00 45.00 331.60 69.15 74.70

50 58.5 0.291 17.0

279.12 50.00 45.00 331.60 64.94 69.50

40 46.8 0.289 13.5

279.12 49.00 45.00 331.60 64.94 68.59

30 35.1 0.297 10.4

279.12 48.00 45.00 331.60 64.94 67.68

20 23.4 0.359 * 8.40 279.12 47.00 45.00 331.60 64.94 66.80

10 11.7 0.690 * 8.08 279.12 46.00 45.00 331.60 64.94 65.95 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.

DIMENSIONS

L W W/Flash Econ H

70.9 in 55.1 in 55.1 in 92.7 in

A B C D

EVAPORATOR CONDENSER

IN OUT IN OUT

5.0 in 5.0 in 4.0 in 4.0 in

Cooling Tower Data Sheet

Glen Brunkenhoefer

TEXAS AIRSYSTEMS, INC.

2951 Northern Cross Blvd Ft Worth, TX 76136

USA

Phone: 817-8-808-2328 Email: glenb@texasairsystems.com

Project :

Equipment Reference:

Product Type : AT/UT/USS Cooling Tower

Date: 9/18/2015 Page: 1 Selection Criteria

Capacity (Tons): 200.00 Capacity (MBH): 3,000.00 Fluid Type: Water Flow (GPM): 600.0 Entering Fluid Temp (°F): 95.0 Leaving Fluid Temp (°F): 85.0 Wet Bulb (°F): 82.0

IBC Design Criteria Seismic Design Force (g) 1g Velocity Pressure (psf) up to 60

Product line is CTI/ECC certified. Design conditions are outside the scope of CTI Standard 201 RS.

Qty Model Capacity (Tons) Percent Capacity

1 USS-29-418 204.00 102.0

All Weights, Dimensions and Technical Data are Shown per Unit Fans: 2 # Fan Motors @ HP: (2) @ 10.00 (460/3/60) # Heaters @ kW: (2) @ 6.00 Air Flow (CFM) 89,800 Inlet Pressure Drop (psi): 2.4 Evaporated Water Rate (gpm): 4.80

Overall Length: 18' 0.000'' Overall Width: 8' 5.500'' Overall Height: 12' 0.750''

Operating Weight (lbs): 13,870 Shipping Weight (lbs): 7,980 Heaviest Section (lbs): 5,430

Options Selected

(2) Fan Motor: Inverter Capable, Premium Efficient EVAPAK Fill IBC Compliant up to 1g 316 Stainless Steel Upper 316 Welded Stainless Steel Cold Water Basin External Service Platform with Ladder Motor Davit with Base Independent Cell Operation Contactor w/Transformer and Disconnect for Heater Package El. Heaters (0F / -18C ambient) (2) 6 kW Stainless Steel Fan Shaft Vibration Switch Safety Cage evapSelect Version: US May 2015

FrankECampagna Text Box Exhibit B evapSelect Version: US May 2015

Cooling Tower Data Sheet Page 2

Preliminary

9/18/2015USS-29-418

EVAPCO, INC.

UNIT MODEL # DWG. # SERIAL #DATEREV.SCALE

SHIPPING

WEIGHT

OPERATING

WEIGHT

HEAVIEST SECTION

WEIGHT

NO. OF SHIPPING SECTIONS

ACCESS DOOR

NOTES:

1. (M)- FAN MOTOR LOCATION

2. HEAVIEST SECTION IS UPPER SECTION

3. MPT DENOTES MALE PIPE THREAD

FPT DENOTES FEMALE PIPE THREAD

BFW DENOTES BEVELED FOR WELDING

4. +UNIT WEIGHT DOES NOT INCLUDE

ACCESSORIES (SEE ACCESSORY DRAWINGS)

5. MAKE-UP WATER PRESSURE

20 psi MIN [137 kPa], 50 psi MAX [344 kPa]

21 3/8

18'-0"

8'-5 1/2"

ACCESS DOOR

12'-3/4"

99 1/2

23 1/8

14 7/8

7 1/2

3 5/8

18'-0"

5 1/4

53 3/4

53 3/4

(2) 8 [200]

BFW/GVD

OUTLET

(2) 8 [200]

BFW/GVD

INLET

53 3/4

53 3/4

2 [50] MPT

MAKE-UP

3 [80] FPT

OVERFLOW

3 [80] FPT

DRAIN

8'-5 1/2"

3/8

60 1/4

84 1/2

FACE 1FACE 2

FACE 2

PLAN VIEW

FACE 1

N.T.S. T3091824-DRD-ST -

8120 lbs+ [3685] kg+ 14010 lbs+ [6355] kg+ 5570 lbs+ [2525] kg+ 2

COOLING TOWER

9/18/2015USS-29-418 EVAPCO, INC.

TITLE DWG. #UNIT:

NOTES:

MAXIMUM DEFLECTION OF BEAM UNDER UNIT TO BE 1/360 OF UNIT LENGTH NOT TO EXCEED 1/2" [13mm].

DEFLECTION MAY BE CALCULATED BY USING 55% OF THE OPERATING WEIGHT AS

SUPPORT BEAMS AND ANCHOR HARDWARE ARE TO BE FURNISHED BY OTHERS.

BEAMS MUST BE LOCATED UNDER THE FULL LENGTH OF THE PAN SECTION.

A UNIFORM LOAD ON EACH BEAM. SEE CERTIFIED PRINT FOR OPERATING WEIGHT.

BEAMS SHOULD BE SIZED IN ACCORDANCE WITH ACCEPTED STRUCTURAL PRACTICES.

2.

4.

3.

1.

SUPPORTING BEAM SURFACE MUST BE LEVEL. DO NOT LEVEL THE UNIT BY

PLACING SHIMS BETWEEN THE UNIT MOUNTING FLANGE AND THE SUPPORTING BEAM.

5.

ANCHOR HARDWARE TO BE ASTM - A325 5/8" [16mm] BOLT OR EQUIVALENT.

ANCHORING ARRANGEMENT SHOWN HAS A MAXIMUM WIND RATING OF 60 PSF [2.87 KPa] ON

CASED VERTICAL SURFACES.

6.

THE FACTORY RECOMMENDED STEEL SUPPORT CONFIGURATION IS SHOWN.7.

CONSULT THE FACTORY FOR ALTERNATE SUPPORT CONFIGURATIONS.

UNIT SHOULD BE POSITIONED ON STEEL SUCH THAT THE ANCHORING HARDWARE FULLY8.

PENETRATES THE BEAM'S FLANGE AND CLEARS THE BEAM'S WEB.

STEEL SUPPORT CONFIGURATION 8.5x18 INDUCED DRAFT TOWERS SLIX0918-DD

(8)O 3/4" [19mm]

MOUNTING HOLES

PLAN VIEW

UNIT OUTLINE

8'-5 1/2"

18'-0"

13/16

99 7/8

C/L OF MOUNTING HOLES

13/16

21 TYPICAL END VIEW

UNIT

MOUNTING HOLE

13/16

1 5/8

C/L OF UNIT LOAD

103 1/2

103 1/2

TITLE UNIT:

EVAPCO, INC.

DWG. #

EXTERNAL SERVICE PLATFORM PLT30918-DCALL 8 1/2 X 18 AT COOLING TOWER UNITS

NOTES:

1. LADDER AND PLATFORM SHIP LOOSE. FIELD INSTALLATION BY OTHERS IS REQUIRED.

2. THE BOTTOM OF THE LADDER DOES NOT EXTEND PAST THE BASE OF THE UNIT.

IF THE UNIT IS ELEVATED THEN AN OPTIONAL EXTENDED LADDER PACKAGE

SHOULD BE CONSIDERED. (CONSULT FACTORY)

3. REFER TO RIGGING PACK FOR LADDER AND PLATFORM MOUNTING INSTRUCTIONS.

4. EACH PLATFORM AND LADDER ASSY. WEIGHS 1070 LBS. [485KG]

MODEL # H

AT-29-318, 418, 618 84 7/8 [2155]

AT-29-518, 718 96 7/8 [2460]

AT-29-818, 918 108 7/8 [2765]

209 7/8

2 5/8

39 1/2

H

6 7/8

NOTES:

REMOVABLE DAVIT

M = MOTOR A.

DAVIT IS DESIGNED FOR RAISING OR LOWERING EVAPCO

FAN MOTORS OR FANS AND GEARS AS UNIT IS

EQUIPPED. DO NOT USE FOR ANY OTHER PURPOSE.

B.

DAVIT IS DESIGNED TO PIVOT FREELY AND CAN BE

REMOVED FROM ITS MOUNTING BASE FOR STORAGE.

C.

DIMENSIONS LISTED AS FOLLOWS: ENGLISH [METRIC]

IN [mm]

D. MDAIMWEO-DE

41 3/4 [1060] STANDARD FAN OR LOW SOUND FAN

52 [1320] SUPER LOW SOUND FAN OR HOOD OPTION

56 1/2 [1435] GEAR DRIVE

A

A

MOUNTING BRACKET

MOUNTING CHANNEL

3/8Ø BOLT

3/8Ø FLATWASHER

3/8Ø FLATWASHER

3/8Ø NUT

3/8Ø LOCKWASHER

MOUNTING

BRACKET

MOUNTING

BRACKET

MOUNTING

BRACKET

MOUNTING CHANNEL

(SHIPS LOOSE)

ASSEMBLY ARRANGEMENT

(TYPICAL)

SECTION A-A

200LB

MAX

600LB

MAX

M

EVAPCO, INC.

TITLE DWG. #UNIT: HEATER LOCATION 8.5x12/14/18/21 INDUCED DRAFT TOWER HLT209VO-DA

LWCO

017-00207PA

BULB WELL

017-00006P

LWCO COVER PLATE

(INSIDE UNIT)

THERMOSTAT

017-00005P

HEATER CONTROL PANEL

(OPTIONAL, SEE WIRING DIAGRAM)

(2)IMMERSION

HEATERS

(ONE EACH END)

NOTES:

OUTLET BOX AND THE NEAREST OBSTRUCTION FOR REMOVAL OF THE HEATER.

ALL NIPPLES ON UNIT ARE NOT SHOWN IN ORDER TO CLARIFY

ALL HEATER COMPONENTS BY EVAPCO ARE FACTORY MOUNTED WHEN POSSIBLE.

DIMENSIONS LISTED AS FOLLOWS: ENGLISH IN

HEATER COMPONENT LOCATIONS.

A MINIMUM OF CLEARANCE IS REQUIRED BETWEEN THE HEATER

2.

4.

3.

1.

CONN. SIDE PANEL

[METRIC] [mm]

40 1/2

46 1/2

10 1/2

9 1/2

END VIEW

TITLE DESCRIPTION:

EVAPCO, INC.

DWG. #VIBRATION SWITCH

ADJUSTMENT

ADJUST THE SWITCH SO THAT DURING FULL SPEED START-UP AND UNDER NORMAL CONDITIONS, THE CONTACTS DO NOT TRIP.

FIRST, WITH THE MOTOR OFF, TURN THE ADJUSTMENT SCREW COUNTER-CLOCKWISE (MORE SENSITIVE DIRECTION) UNTIL THE SWITCH TRIPS. NEXT, TURN THE ADJUSTMENT SCREW CLOCKWISE 1/8 TURN (LESS SENSITIVE DIRECTION). RESET THE SWITCH BY DEPRESSING THE PUSH-BUTTON RESET LOCATED ON TOP OF THE SWITCH. START THE MOTOR ON FULL SPEED. IF THE MOTOR TRIPS THE SWITCH, THEN TURN THE ADJUSTMENT SCREW CLOCKWISE AN ADDITIONAL 1/8 TURN. RESET THE SWITCH AND START THE

MOTOR AGAIN. REPEAT THE ABOVE PROCEDURE UNTIL THE MOTOR CONTINUES TO RUN.

SINGLE SPEED V1AU0000-EE

WIRING DIAGRAM:

DPDT

F

FAN

MOTOR

F

SUPPLIED VOLTAGE, 3 PHASE

INCOMING POWER

CIRCUIT

BREAKER

M1 OL1 1T1

1T2

1T3

SUPPLIED VOLTAGE

H1 H3 H2 H4

X1 X2

X2

OL1

M1

OPTIONAL

THERMOSTAT

EVAPCO

SWITCH

HAND

OFF

DOX

AUTO

XDO

OFF

VIBRATION

017-00464P

MOTOR

(BY OTHERS)

CONTROL TRANSFORMER

CONTROL VOLTAGE

250 Vac; 1/2 AMP, 125 Vdc; 1/4 AMP, 250 Vdc.

15 AMPS, 125, OR 480 Vac; 1/8 HP, 125 Vac; 1/4 HP,

1. DASHED LINES INDICATE WIRING(BY OTHERS)

NOTES:

SWITCH CONTACT RATING:

F

F

F

F

Sound Pressure Levels (SPL) in dB RE 0.0002 Microbar

Sound Power Levels (PWL) in dB RE 10-12 Watt

MODEL USS-29-418

MOTOR 10.00 HP

# MOTORS 2

SPEED: Full Speed

CELL DATA

63 HZ 76 69 77 71 76 69 77 70 79 70 102

125 HZ 79 68 80 70 79 68 80 69 85 69 101

250 HZ 79 68 80 71 79 68 80 69 85 73 102

500 HZ 74 60 76 63 74 60 75 61 79 70 97

1 KHZ 70 56 72 59 70 56 71 58 75 61 91

2 KHZ 68 51 70 55 68 51 69 54 72 59 87

4 KHZ 69 49 70 53 69 49 70 52 71 58 86

8 KHZ 70 48 71 51 70 48 71 51 69 56 84

BAND (1.5m) (15m) (1.5m) (15m) (1.5m) (15m) (1.5m) (15m) (1.5m) (15m)

5 ft 50 ft 5 ft 50 ft 5 ft 50 ft 5 ft 50 ft 5 ft 50 ft

End Motor Side Opp End Opp Mtr. Side Top

SOUND PRESSURE LEVEL (dB)

LEVEL (dB)

POWER

SOUND

CALC

dBA

78 64 80 66 78 64 79 65 82 70 99

Sound option(s) selected: None

REMARKS: 1. Sound Pressure Levels are according to CTI Standard ATC-128

2. Sound Power Levels are calculated according to the Small Units Section 8

3. Sound from free-field conditions over a reflecting plane with +/-2 db(A) tolerance

4. Noise levels can increase with variable frequency drives depending on the drive manufacturer and the drive configuration

5. Complete unit sound data with all fans operating

Exhibit C

Contractor shall size transformers, breakers, fuses, and circuits according to Magnetic Levitation specifications, manufactures recommendations, and the National Electric Code(NFPA70). The transformers will meet the following requirements as well:

A. General purpose dry type transformers.

1. Unless otherwise specified, dry type transformers shall be in accordance with NEMA, NEC and as shown on the drawings. Transformers shall be UL listed or labeled.

2. Dry type transformers shall have the following features:

a. Self-cooled by natural convection, isolating windings, indoor, dry type.

Autotransformers will not be accepted.

b. Rating and winding connections shall be as shown on the drawings.

c. Transformers shall have copper windings.

d. Ratings shown on the drawings are for continuous-duty without the use of cooling fans.

e. Insulation systems:

1. Transformers 30 KVA and larger: UL rated 220 degrees C system having an average maximum rise by resistance of 150 degrees C in a maximum ambient of 40 degrees C.

2. Transformers below 30 KVA: Same as for 30 KVA and larger or UL rated 185 degrees C system having an average maximum rise by resistance of 115 degrees C in a maximum ambient of 40 degrees C.

B. Core and coil assemblies:

1. Rigidly braced to withstand the stresses caused by short circuit currents and rough handling during shipment.

2. Cores shall be grain oriented, non-aging, and silicon steel.

3. Coils shall be continuous windings without splices except for taps.

4. Coil loss and core loss shall be minimum for efficient operation.

5. Primary and secondary tap connections shall be brazed or pressure type.

6. Coil windings shall have end fillers or tie downs for maximum strength.

C. Certified sound levels determined in accordance with NEMA, shall not exceed the following:

Transformer Rating Sound Level 0 – 9 KVA 40db

10 – 50 KVA 45db 51 – 150 KVA 50db 151 – 300 KVA 55dB 301 – 500 KVA 60dB

D. Single phase transformers rated 15 KVA through 25 KVA shall have two, 5 percent full capacity taps below normal rated primary voltage. All transformers rated 30 KVA and larger shall have two, 2-1/2 percent full capacity taps above, and four, 2-1/2 percent full capacity taps below normal rated primary voltage.

E. Core assemblies shall be grounded to their enclosures by adequate flexible ground straps.

F. Enclosures:

1. Not less than code gage steel.

2. Outdoor enclosures shall be NEMA 3R.

3. Temperature rise at hottest spot shall conform to NEMA Standards, and shall not bake and peel off the enclosure paint after the transformer has been placed in service.

4. Ventilation openings shall prevent accidental access to live components.

5. Thoroughly clean and paint enclosure at the factory with manufacturer's prime coat and standard finish.

G. Standard NEMA features and accessories including ground pad, lifting provisions and nameplate with the wiring diagram and sound level indicated on it.

H. Dimensions and configurations shall conform to the spaces designated for their installations.

I. Efficiency and harmonics.

1. Transformers shall be designed to withstand the overheating effects caused by harmonics resulting from non-linear (non-sinusoidal) loads such as office equipment using solid-state switching power supplies (i.e. computers, laser printers and copiers).

2. Copper coils’ neutrals shall carry at least 200% of normal phase current.

3. Minimum efficiency designed to supply circuits with a harmonic profile equal to or less than a K factor of 13 without exceeding specified temperature rise. Transformers with K factor of 13 shall be provided, if K factor is not shown on contract drawings. Table below applies to K-13 transformers only.

Harmonic K-13

Fundamental 100%

3rd 70%

5th 42%

7th 5%

9th 3%

11th 3%

13th 1%

15th 0.7%

17th 0.6%

The efficiency of a low-voltage dry-type distribution transformer shall be no less than that required for their kVA rating in the table below.