Solicitation_SEG30017Q0022_for_NEW_SCREW_CHILLER.pdf

Embassy of the United States of America Cairo Egypt

July 06, 2017

To: Prospective Quoters Subject: Request for Quotations number SEG30017Q0022

Dear Prospective Offerors, Enclosed is a Request for Quotations (RFQ) for the supply of a New 400TR water cooled screw chiller with VFD, C/W vibration isolators. If you would like to submit a quotation, follow the instructions in Section 3 of the solicitation, complete the required portions of the attached document, and submit it to the address shown on the Standard Form 1449 that follows this letter.

The U.S. Government intends to award a contract to the responsible company submitting an acceptable quotation at the lowest price. We intend to award a contract based on initial quotations, without holding discussions, although we may hold discussions with companies in the competitive range if there is a need to do so.

Your offer must be submitted by e-mail to CairoContracts@state.gov on or before August 06, 2017 at 2:00 PM.

Sincerely, Nenita Whitaker Contracting Officer

Enclosure

Solicitation SEG30017Q0022 for NEW SCREW CHILLER 1 mailto:CairoContracts@state.gov mailto:CairoContracts@state.gov

SOLICITATION, OFFER,

AND AWARD

(Construction, Alteration, or Repair)

1. SOLICITATION NUMBER

SEG30017Q0022

2. TYPE OF SOLICITATION

SEALED BID (IFB)

NEGOTIATED (RFP)

3. DATE ISSUED

07/06/2017

PAGES

IMPORTANT - The "offer" section on the reverse must be fully completed by offeror.

4. CONTRACT NUMBER

5. REQUISITION/PURCHASE REQUEST NUMBER

PR6423052

6. PROJECT NUMBER

7. ISSUED BY CODE

EG300 8. ADDRESS OFFER TO

AMERICAN EMBASSY CAIRO

US EMBASSY CAIRO 8 KAMAL EL DIN SALAH, ATTN:

PROCUREMENT/CONTRACTING OFFICE

CAIRO 11519

EGYPT

AMERICAN EMBASSY CAIRO

US EMBASSY CAIRO 8 KAMAL EL DIN SALAH, ATTN:

PROCUREMENT/CONTRACTING OFFICE

CAIRO 11519

EGYPT

9. FOR INFORMATION

CALL:

a. NAME Sherif Mohamed

b. TELEPHONE NUMBER (Include area code) (NO COLLECT CALLS)

01222186445

SOLICITATION

NOTE: In sealed bid solicitations "offer" and "offeror" mean "bid and "bidder".

10. THE GOVERNMENT REQUIRES PERFORMANCE OF THE WORK DESCRIBED IN THESE DOCUMENTS (Title, identifying number, date)

11. The contractor shall begin performance within calendar days and complete it within calendar days after receiving x award, notice to proceed. This performance period is x mandatory negotiable. (See ).

13. ADDITIONAL SOLICITATION REQUIREMENTS:

a. Sealed offers in original and copies to perform the work required are due at the place specified in Item 8 by 02:00 (hour) local time 08/06/2017 (date). If this is a sealed bid solicitation, offers will be publicly opened at that time. Sealed envelopes containing offers shall be marked to show the offeror's name and address, the solicitation number, and the date and time offers are due.

b. An offer guarantee x is, is not required.

c. All offers are subject to the (1) work requirements, and (2) other provisions and clauses incorporated in the solicitation in full text or by reference.

d. Offers providing less than calendar days for Government acceptance after the date offers are due will not be considered and will be rejected.

STANDARD FORM 1442 (REV. 8/2014)

Prescribed by GSA - FAR (48 CFR) 53.236-1(d)

12A. THE CONTRACTOR MUST FURNISH ANY REQUIRED PERFORMANCE AND PAYMENT BONDS?

(If “YES,” indicate within how many calendar days after award in Item 12B.)

YES x NO

12B. CALENDAR DAYS

AMOUNTS

OFFER (Must be fully completed by offeror)

14. NAME AND ADDRESS OF OFFEROR (Include ZIP Code)

15. TELEPHONE NUMBER (Include area code)

16. REMITTANCE ADDRESS (Include only if different than Item 14.)

CODE FACILITY CODE

17. The offeror agrees to perform the work required at the prices specified below in strict accordance with the terms of this solicitation, if this offer is accepted by the Government in writing within calendar days after the date offers are due. (Insert any number equal to or greater than the minimum requirement stated in Item 13d. Failure to insert any number means the offeror accepts the minimum in Item 13d.)

18. The offeror agrees to furnish any required performance and payment bonds.

19. ACKNOWLEDGMENT OF AMENDMENTS

(The offeror acknowledges receipt of amendments to the solicitation -- give number and date of each)

AMENDMENT

NUMBER

DATE.

20a. NAME AND TITLE OF PERSON AUTHORIZED TO SIGN OFFER (Type or print) 20b. SIGNATURE 20c. OFFER DATE

STANDARD FORM 1442 (REV. 8/2014) BACK

AWARD (To be completed by Government)

21. ITEMS ACCEPTED:

22. AMOUNT

23. ACCOUNTING AND APPROPRIATION DATA

24. SUBMIT INVOICES TO ADDRESS SHOWN IN

(4 copies unless otherwise specified)

ITEM

25. OTHER THAN FULL AND OPEN COMPETITION PURSUANT TO

10 U.S.C. 2304(c)( ) 41 U.S.C. 253(c)( )

26. ADMINISTERED BY CODE 27. PAYMENT WILL BE MADE BY

CONTRACTING OFFICER WILL COMPLETE ITEM 28 OR 29 AS APPLICABLE

28. NEGOTIATED AGREEMENT (Contractor is required to sign this document and return copies to issuing office.) Contractor agrees to furnish and deliver all items or perform all work, requisitions identified on this form and any continuation sheets for the consideration slated in this contract. The rights and obligations of the parties to this contract shall be governed by (a) this contract award, (b) the solicitation, and (c) the clauses, representations, certifications, and specifications or incorporated by reference in or attached to this contract.

29. AWARD (Contractor is not required to sign this document.) Your offer on this solicitation is hereby accepted as to the items listed. This award consummates the contract, which consists of (a) the Government solicitation and your offer, and (b) this contract award. No further contractual document is necessary.

30A. NAME AND TITLE OF CONTRACTOR OR PERSON AUTHORIZED

TO SIGN (Type or print)

31A. NAME OF CONTRACTING OFFICER (Type or print)

30B. SIGNATURE

30C. DATE

31B. UNITED STATES OF AMERICA, BY

31C. AWARD DATE

TABLE OF CONTENTS

Section 1 - The Schedule

SF 1449 cover sheet

Continuation To SF-1449, RFQ Number SEG30017Q0022, Prices, Block 23

Continuation To SF-1449, RFQ Number SEG30017Q0022, Schedule Of Supplies/Services, Block 20 Description/Specifications/Work Statement

Attachment 1 to Description/Specifications/Statement of Work, Government Furnished Property

Section 2 - Contract Clauses

Contract Clauses

Addendum to Contract Clauses - FAR and DOSAR Clauses not Prescribed in Part 12

Section 3 - Solicitation Provisions

Solicitation Provisions

Addendum to Solicitation Provisions - FAR and DOSAR Provisions not Prescribed in Part 12

Section 4 - Evaluation Factors

Evaluation Factors

Addendum to Evaluation Factors - FAR and DOSAR Provisions not Prescribed in Part

Section 5 - Offeror Representations and Certifications

Offeror Representations and Certifications

Addendum to Offeror Representations and Certifications - FAR and DOSAR Provisions not Prescribed in Part 12

Solicitation SEG30017Q0022 for NEW SCREW CHILLER 4

SECTION 1 - THE SCHEDULE

CONTINUATION TO SF-1449

RFQ NUMBER SEG30017Q0022

PRICES BLOCK 23

I. Scope of Services

A. The Contractor shall deliver a new packaged, water-cooled, single-compressor chillers (Screw Chiller) with VFD, C/W vibration isolators to the U.S. Embassy Cairo.

B. This is a “firm-fixed price” contract.

C. The price listed below shall include all labor, materials, overhead, profit, and transportation necessary to deliver the required items to the [X] American Embassy/Consulate, [ ] U.S. Despatch Agent located in New Jersey, USA.

D. All prices are in USD.

II. Pricing

Line Item Description Unit Unit Price Est. Quantity* Total Price

Supply new 400TR water cooled screw chiller with VFD, C/W vibration isolators.

See attached specifications

Grand Total

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Solicitation SEG30017Q0022 for NEW SCREW CHILLER 5

CONTINUATION TO SF-1449

RFQ NUMBER SEG30017Q0022

SCHEDULE OF SUPPLIES/SERVICES, BLOCK 20

DESCRIPTION/SPECIFICATIONS/WORK STATEMENT

I. [Note to Contracting Officer: Paragraph I should describe the item(s) to be purchased under this purchase order.]

II. Delivery Location and Time

A. The Contractor shall deliver all ordered items to the US Embassy Cairo. The address is:

US Embassy Cairo_____________ 8 Kamal El Din Salah, Garden City, Cairo - Egypt ________________

B. The Contractor shall deliver all items not later than 7 Months after date of contract award.

C. Any Contractor personnel involved with the delivery of the items shall comply with standard U.S. Embassy regulations for receiving supplies. The Contracting Officer's Representative (COR) will be responsible for instructing contractor personnel at the time deliveries are made. Prior notice of at least 30 Days [X] will [ ] will not be required.

D. If delivery will be to U.S. Embassy, delivery shall be made between the hours of 0800 – 1630.

E. QUALITY ASSURANCE AND SURVEILLANCE PLAN (QASP)

This plan provides an effective method to promote satisfactory contractor performance. The QASP provides a method for the Contracting Officer's Representative (COR) to monitor Contractor performance, advise the Contractor of unsatisfactory performance, and notify the Contracting Officer of continued unsatisfactory performance. The Contractor, not the Government, is responsible for management and quality control to meet the terms of the contract. The role of the Government is to monitor quality to ensure that contract standards are achieved.

Solicitation SEG30017Q0022 for NEW SCREW CHILLER 6

Performance Objective Scope of Work Para Performance Threshold

Services.

Performs all furnish and delivery services set forth in the scope of work.

1. thru 19.

All required services are performed and no more than one (1) customer complaint is received per month.

The remainder of this page is intentionally blank.

Solicitation SEG30017Q0022 for NEW SCREW CHILLER 7

US Embassy-Cairo Cairo I Chiller Plant Modernization

3/2017

WATER-COOLED, ROTARY-SCREW WATER CHILLERS 236426.11 - 1

SECTION 236426.11 - WATER-COOLED, ROTARY-SCREW WATER CHILLERS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Packaged, water-cooled, single-compressor chillers.

This chiller is to replace Carrier existing chiller model 19XR-3232352CMS52

Existing chiller Capacities and Characteristics:

1- Capacity: 400 tons.

2- Cooler:

1. Pressure Rating: 150 psig.

2. Number of Passes: Two.

3. Fluid Type: Water.

4. Design Fluid Flow Rate: 959.0 gpm.

5. Entering-Fluid Temperature: 54.98 deg F.

6. Leaving-Fluid Temperature: 45.00 deg F.

7. Fluid Pressure Drop: 21.8 Ft wg.

8. Fouling Factor: 0.0001 sq. ft. x h x deg F/Btu.

9. Tube material: copper

3- Condenser:

1. Pressure Rating: 150 psig.

2. Number of Passes: Two.

3. Fluid Type: Water.

4. Design Fluid Flow Rate: 1128.6 gpm.

5. Entering-Fluid Temperature: 85 deg F.

6. Leaving-Fluid Temperature: 95 deg F.

7. Fluid Pressure Drop: 21.1 Ft wg.

8. Fouling Factor: 0.00025 sq. ft. x h x deg F/Btu.

4- Compressor:

1. Rated Load Amperes: 410.

2. Locked-Rotor Amperes: 2167.

5- Chiller Electrical data:

ATTACHMENT 1

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1. Power Input: 239 kW.

2. Power Factor: 0.90.

3. Minimum Circuit Ampacity: 513.

4. Maximum Overcurrent Protection Device: 800.

5. Volts: 380.

6. Phase: Three.

7. Hertz: 50.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include refrigerant, rated capacities, operating characteristics, furnished specialties, and accessories.

2. Performance at AHRI standard conditions and at conditions indicated.

3. Performance at AHRI standard unloading conditions.

4. Minimum evaporator flow rate.

5. Refrigerant capacity of chiller.

6. Oil capacity of chiller.

7. Fluid capacity of evaporator.

8. Characteristics of safety relief valves.

9. Fluid capacity of condenser.

10. Minimum entering condenser-fluid temperature.

11. Performance at varying capacities with constant-design, entering condenser-fluid temperature. Repeat performance at varying capacities for different condenser-fluid temperatures from design to minimum in 5 deg F (3 deg C) increments.

B. Shop Drawings:

1. Include plans, elevations, sections, and attachment details.

2. Include details of equipment assemblies. Indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection.

3. Include diagrams for power, signal, and control wiring.

C. Compliance Sheet:

1. Compliance sheet between specification, existing chiller and new chiller.

D. Spare Parts List:

1. Recommended spare parts list for 2000 hours and 5000 hours operation.

1.3 INFORMATIONAL SUBMITTALS

A. Certificates: For certification required in "Quality Assurance" Article.

B. Seismic Qualification Data: Certificates, for chillers, accessories, and components, from manufacturer.

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1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions.

3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements.

C. Source quality-control reports.

D. Field Quality-Control Reports: Startup service reports.

E. Sample Warranty: For special warranty.

1.4 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For the chiller to include in emergency, operation, and maintenance manuals.

B. Service manual to include the wiring diagram, control connections and Freon piping network.

1.5 QUALITY ASSURANCE

A. AHRI Certification: Certify chiller according to AHRI 550 certification program.

B. AHRI Rating: Rate chiller performance according to requirements in AHRI 550/590.

C. ASHRAE Compliance:

1. ASHRAE 15 for safety code for mechanical refrigeration.

2. ASHRAE 147 for refrigerant leaks, recovery, and handling and storage requirements.

D. ASHRAE/IES 90.1 Compliance: Applicable requirements in ASHRAE/IES 90.1.

E. ASME Compliance: Fabricate and label chiller to comply with ASME Boiler and Pressure Vessel Code: Section VIII, Division 1, and include an ASME U-stamp and nameplate certifying compliance.

F. Comply with NFPA 70.

G. Comply with requirements of UL and UL Canada and include label by a qualified testing agency showing compliance.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Ship chillers from the factory fully charged with refrigerant.

B. Ship oil-lubricated chiller with a separate full charge of oil.

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1. Ship oil in containers separate from chiller.

C. Package chiller for export shipping in totally enclosed bagging.

1.7 WARRANTY

Warranty Period: Warranty shall include parts and labor for one year after date of Substantial Completion or 18 months from shipment in addition to 5 years compressor warranty.

PART 2 - PRODUCTS

Government Furnished Equipment GFE

2.1 PERFORMANCE REQUIREMENTS

A. Seismic Performance: Chillers shall withstand the effects of earthquake motions determined according to [ASCE/SEI 7].

1. The term "withstand" means "the unit will remain in place without separation of any parts when subjected to the seismic forces specified and the unit will be fully operational after the seismic event.

2. The seismic calculation shall be provided in accordance with Cairo-Egypt zone of location.

B. Condenser-Fluid Temperature Performance:

1. Startup Condenser-Fluid Temperature: Chiller shall be capable of starting with an entering condenser-fluid temperature of 60 deg F (16 deg C) and providing stable operation until the system temperature is elevated to the minimum operating entering condenser-fluid temperature.

2. Minimum Operating Condenser-Fluid Temperature: Chiller shall be capable of continuous operation over the entire capacity range indicated with an entering condenser-fluid temperature of [65 deg F (18 deg C)].

3. Make factory modifications to standard chiller design if necessary to comply with performance indicated.

C. Site Altitude: Chiller shall be suitable for altitude in which installed without affecting performance indicated. Make adjustments to affected chiller components to account for site altitude.

2.2 PACKAGED, WATER-COOLED, SINGLE-COMPRESSOR CHILLERS

A. Approved manufacturers are, Carrier or approved equal provided the manufacturer have a local representative for future maintenance and repair.

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B. Description: Factory-assembled and tested chiller with compressor, compressor motor, compressor motor controller, lubrication system, evaporator, condenser, controls, interconnecting unit piping and wiring, and indicated accessories.

C. Fabricate chiller mounting base with reinforcement strong enough to resist chiller movement during a seismic event when chiller is anchored to field support structure.

D. Compressor:

1. Description: [Semi-Hermetic], positive displacement, and oil lubricated.

2. Casing: Cast iron, precision machined for minimum clearance about periphery of rotors.

3. Rotors: Manufacturer's standard one-, two-, or three-rotor design.

E. Compressor Motor:

1. Continuous-duty, squirrel-cage, induction-type motor with energy efficiency required to suit chiller energy efficiency indicated.

2. Factory mounted, aligned, and balanced as part of compressor assembly before shipping.

3. Motor shall be of sufficient capacity to drive compressor throughout entire operating range without overload and with sufficient capacity to start and accelerate compressor without damage.

F. Vibration Balance: Balance chiller compressor and drive assembly to provide a precision balance that is free of noticeable vibration over the entire operating range.

1. Overspeed Test: 25 percent above design operating speed.

G. Service: Easily accessible for inspection and service.

1. Compressor's internal components shall be accessible without having to remove compressor-drive assembly from chiller.

2. Provide lifting lugs or eyebolts attached to casing.

H. Capacity Control: Variable-frequency controller to achieve performance indicated.

1. Maintain stable operation throughout range of operation. Configure to achieve most energy-efficient operation possible.

2. Operating Range: From 100 to 15 percent of design capacity.

3. Condenser-Fluid Unloading Requirements over Operating Range: The Condenser liquid pump shall shut down when the refrigerant temperature or entering condenser temperature is below pre-established limits.

I. Oil Lubrication System: Consisting of pump if required, filtration, heater, cooler, factory-wired power connection, and controls.

1. Provide lubrication to bearings, gears, and other rotating surfaces at all operating, startup, shutdown, and standby conditions including power failure.

2. Thermostatically controlled oil heater properly sized to remove refrigerant from oil.

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3. Oil filter shall be the easily replaceable cartridge type, minimum 0.5-micron efficiency, with means of positive isolation while servicing.

4. Refrigerant or water cooled oil cooler.

5. Factory-installed and pressure-tested piping with isolation valves and accessories.

6. Oil compatible with refrigerant and chiller components.

7. Positive visual indication of oil level.

J. Refrigerant Circuit:

1. Refrigerant Type: R-134a or any HFC, Classified as Safety Group A1 according to

ASHRAE 34.

2. Refrigerant Compatibility: Chiller parts exposed to refrigerants shall be fully compatible with refrigerants, and pressure components shall be rated for refrigerant pressures.

3. Refrigerant Flow Control: Manufacturer's standard refrigerant flow-control device satisfying performance requirements indicated.

4. Pressure Relief Device:

a. Comply with requirements in ASHRAE 15 and in applicable portions of ASME Boiler and Pressure Vessel Code: Section VIII, Division 1.

b. ASME-rated, spring-loaded pressure relief valve; single- or multiple-reseating type. Pressure relief valve(s) shall be provided for each heat exchanger.

Condenser shall have dual valves with one being redundant and configured to allow either valve to be replaced without loss of refrigerant.

5. Refrigeration Transfer: Provide service valves and other factory-installed accessories required to facilitate transfer of refrigerant from chiller to a remote refrigerant storage and recycling system. Comply with requirements in ASHRAE 15 and ASHRAE 147.

6. Refrigerant Isolation: Factory install positive shutoff isolation valves in the compressor discharge line to the condenser and the refrigerant liquid line leaving the condenser to allow for isolation and storage of full refrigerant charge in the chiller condenser shell. In addition, provide isolation valve on suction side of compressor from evaporator to allow for isolation and storage of full refrigerant charge in the chiller evaporator shell.

K. Evaporator:

1. Description: Shell-and-tube design with water in tubes and refrigerant surrounding tubes within shell. Shell is separate from condenser.

2. Shell Material: Carbon-steel rolled plates with continuously welded seams or seamless pipe.

3. Designed to prevent liquid refrigerant carryover from entering compressor.

4. Provide evaporator with sight glass or other form of positive visual verification of liquid-refrigerant level.

5. Tubes:

a. Individually replaceable from either end and without damage to tube sheets and other tubes.

b. Mechanically expanded into end sheets and physically attached to intermediate tube sheets.

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c. Material: Copper

d. Nominal OD: 3/4 inch (19 mm).

e. Minimum Wall Thickness: 0.025 inch (0.6 mm).

f. External Finish: Manufacturer's standard.

g. Internal Finish: Enhanced

6. End Tube Sheets: Continuously welded to each end of shell; drilled and reamed to accommodate tubes with positive seal between fluid in tubes and refrigerant in shell.

7. Intermediate Tube Sheets: Installed in shell and spaced along length of tube at intervals required to eliminate vibration and to avoid contact of tubes resulting in abrasion and wear.

8. Water Box:

a. Cast-iron or carbon-steel construction; arranged to provide visual inspection and cleaning of tubes from either end without disturbing refrigerant in shell.

b. Standard type for water box with piping connections.

c. Provide water boxes with lifting lugs or eyebolts.

d. Hinged water boxes.

e. Nozzle Pipe Connections: Victaulic.

f. Thermistor or RTD temperature sensor factory installed in each nozzle.

g. Fit each water box with 3/4-inch (19-mm) drain connection at low point and vent connection at high point, each with threaded plug.

L. Condenser:

1. Description: Shell-and-tube design with water in tubes and refrigerant surrounding tubes within shell. Shell is separate from evaporator.

2. Shell Material: Carbon-steel rolled plates with continuously welded seams or seamless pipe.

3. Designed to prevent direct impingement of high-velocity hot gas from compressor discharge on tubes.

4. Provide condenser with sight glass or other form of positive visual verification of refrigerant charge and condition.

5. Tubes:

a. Individually replaceable from either end and without damage to tube sheets and other tubes.

b. Mechanically expanded into end sheets and physically attached to intermediate tube sheets.

c. Material: Copper.

d. Nominal OD: 3/4 inch (19 mm).

e. Minimum Wall Thickness: [0.025 inch (0.6 mm)].

f. External Finish: Manufacturer's standard.

g. Internal Finish: Enhanced.

6. End Tube Sheets: Continuously welded to each end of shell; drilled and reamed to accommodate tubes with positive seal between fluid in tubes and refrigerant in shell.

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7. Intermediate Tube Sheets: Installed in shell and spaced along length of tube at intervals required to eliminate vibration and to avoid contact of tubes resulting in abrasion and wear.

8. Water Box:

a. Cast-iron or carbon-steel construction; arranged to provide visual inspection and cleaning of tubes from either end without disturbing refrigerant in shell.

b. Standard type for water box with piping connections.

c. Provide water boxes with lifting lugs or eyebolts.

d. Hinged water boxes.

e. Nozzle Pipe Connections: Victaulic.

f. Thermistor or RTD temperature sensor factory installed in each nozzle.

g. Fit each water box with [3/4-inch (19-mm)] drain connection at low point and vent connection at high point, each with threaded plug.

M. Electrical Power:

1. Factory installed and wired, and functionally tested at factory before shipment.

2. Single-point, field-power connection to circuit breaker. Minimum withstand rating shall be as required by electrical power distribution system, but not less than [65,000] A.

a. Provide branch power circuit to each motor, electric heater, dedicated electrical load, and controls with circuit breaker.

b. NEMA ICS 2-rated motor controller for auxiliary motors, hand-off-auto switch, and overcurrent protection for each motor. Provide variable-frequency controller for each variable-speed motor furnished.

c. Control-circuit transformer with primary and secondary side fuses.

3. Terminal blocks with numbered and color-coded wiring to match wiring diagram. Spare wiring terminal block for connection to external controls or equipment.

4. Factory-installed wiring outside of enclosures shall be in metal raceway except make connections to each motor and heater with not more than a 24-inch (610-mm) length of liquid-tight conduit.

N. Motor Controller:

1. Enclosure: Factory installed, unit mounted, NEMA Type 1, with hinged full-front access door with padlock and key.

2. Control Circuit: Obtained from integral control power transformer with a control power 24 vdc of enough capacity to operate connected control devices.

3. Overload Relay: Shall be sized according to UL 1995 or shall be an integral component of chiller control microprocessor.

4. Solid-State, Soft starter Reduced-Voltage Controller: NEMA ICS 2.

a. Surge suppressor in solid-state power circuits providing three-phase protection against damage from supply voltage surges 10 percent or more above nominal line voltage.

b. Visual indication of motor and control status, including the following conditions:

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1) Controller on.

2) Overload trip.

3) Loss of phase.

4) Starter fault.

5. Accessories: Devices shall be factory installed in controller enclosure unless otherwise indicated.

a. Externally Operated Door-Interlocked Disconnect: Circuit breaker. Minimum withstand rating shall be as required by electrical power distribution system, but not less than [65,000]A.

b. Push-Button Stations, Pilot Lights, and Selector Switches: NEMA ICS 2, heavy-duty type.

c. Stop and Lockout Push-Button Station: Momentary-break, push-button station with a factory-applied hasp arranged so padlock can be used to lock push button in depressed position with control circuit open.

d. Control Relays: Time-delay relays.

e. Multifunction Digital-Metering Monitor: Microprocessor-based unit suitable for three- or four-wire systems and with the following features:

1) Selectable, digital display of the following:

a) Phase Currents, Each Phase: Plus or minus 1 percent.

b) Phase-to-Phase Voltages, Three Phase: Plus or minus 1 percent.

c) Phase-to-Neutral Voltages, Three Phase: Plus or minus 1 percent.

d) Three-Phase Real Power: Plus or minus 2 percent.

e) Three-Phase Reactive Power: Plus or minus 2 percent.

f) Power Factor: Plus or minus 2 percent.

g) Frequency: Plus or minus 0.5 percent.

h) Integrated Demand with Demand Interval Selectable from 5 to 60

Minutes: Plus or minus 2 percent.

i) Accumulated energy, in megawatt hours (joules), plus or minus 2 percent; stored values unaffected by power outages for up to 72 hours.

2) Mounting: Display and control unit flush or semi recessed in instrument compartment door.

f. Phase-Failure, Phase-Reversal, Undervoltage/Overvoltage Relays: Solid-state sensing circuit with adjustable undervoltage setting and isolated output contacts for hardwired connection.

g. Power Protection: Chiller shall shut down within six cycles of power interruption.

O. Variable-Frequency Controller:

1. Motor controller shall be factory mounted and wired on the chiller to provide a single-point, field-power termination to the chiller and its auxiliaries.

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2. Description: NEMA ICS 2; listed and labeled as a complete unit and arranged to provide variable speed by adjusting output voltage and frequency.

3. Enclosure: Unit mounted, NEMA, Type 1, with hinged full-front access door with lock and key.

4. Integral Disconnecting Means: Door-interlocked, UL 489, instantaneous-trip circuit breaker with lockable handle. Minimum withstand rating shall be as required by electrical power distribution system, but not less than 65,000A.

5. Technology: Pulse-width-modulated output suitable for constant or variable torque loads.

6. Output Rating: Three phase; with voltage proportional to frequency throughout voltage range.

7. Operating Requirements:

a. Input AC Voltage Tolerance: [380 V ac, plus 10 percent].

b. Input frequency tolerance of 50 Hz, plus or minus 2 Hz.

c. Capable of driving full load, without derating, under the following conditions:

1) Ambient Temperature: 0 to 40 deg C.

2) Relative Humidity: Up to [95] percent (noncondensing).

3) Altitude: [3300 feet (1005 m)].

d. Minimum Efficiency: 96 percent at 100% VFD rated ampacity.

e. Minimum Displacement Primary-Side Power Factor: 95 percent.

f. Overload Capability: 1.5 times the full-load current for three seconds.

g. Starting Torque: As required by compressor-drive assembly.

h. Speed Regulation: Plus or minus 1 percent.

i. Isolated control interface to allow controller to follow control signal over a 10:1 speed range.

j. To avoid equipment resonant vibrations, provide critical speed lockout circuitry to allow bands of operating frequency at which controller shall not operate continuously.

k. Capable of being restarted into a motor coasting in either the forward or reverse direction without tripping.

8. Internal Adjustability Capabilities:

a. Minimum Output Frequency: 6 Hz.

b. Maximum Output Frequency: 60 Hz.

c. Acceleration: 2 to 60 seconds.

d. Deceleration: Zero to 60 seconds.

e. Current Limit: 30 to a minimum of 100 percent of maximum rating.

9. Self-Protection and Reliability Features: Subjecting the controller to any of the following conditions shall not result in component failure or the need for replacement:

a. Over temperature.

b. Short circuit at controller output.

c. Ground fault at controller output. Variable-frequency controller shall be able to start a grounded motor.

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d. Open circuit at controller output.

e. Input undervoltage.

f. Input overvoltage.

g. Loss of input-phase.

h. Reverse phase.

i. AC line switching transients.

j. Instantaneous overload, line to line or line to ground.

k. Sustained overload exceeding 100 percent of controller rated current.

l. Starting a rotating motor.

10. Motor Protection: Controller shall protect motor against overvoltage and undervoltage, phase loss, reverse phase, overcurrent, overtemperature, and ground fault.

11. Automatic Reset and Restart: Capable of three restarts after controller fault or on return of power after an interruption and before shutting down for manual reset or fault correction. Controller shall be capable of automatic restart on phase-loss, and overvoltage and undervoltage trips.

12. Visual Indication: On face of controller enclosure or chiller control enclosure; indicating the following conditions:

a. Power on.

b. Run.

c. Overvoltage.

d. Line fault.

e. Overcurrent.

f. External fault.

g. Motor speed (percent).

h. Fault or alarm status (code).

i. Motor output voltage.

j. Input kilovolt amperes.

k. Total power factor.

l. Input kilowatts.

m. Input kilowatt-hours.

n. Three-phase input voltage.

o. Three-phase output voltage.

p. Three-phase input current.

q. Three-phase output current.

r. Output frequency (Hertz).

s. Elapsed operating time (hours).

t. Diagnostic and service parameters.

13. Operator Interface: At controller or chiller control panel; with start-stop and auto-manual selector with manual-speed-control potentiometer.

14. Harmonic Distortion Filter: Factory mounted and wired to limit total voltage and current distortion to 5 percent.

P. Controls:

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1. Standalone and microprocessor based with all memory stored in nonvolatile memory so that reprogramming is not required on loss of electrical power.

2. Enclosure: Unit mounted, NEMA Type 1, hinged or lockable; factory wired with a single-point, field-power connection and a separate control circuit.

3. Operator Interface: Multiple-character digital or graphic display with dynamic update of information and with keypad or touch-sensitive display located on front of control enclosure. In either imperial or metric units, display the following information:

a. Date and time.

b. Operating or alarm status.

c. Fault history with not less than last 10 faults displayed.

d. Set points of controllable parameters.

e. Trend data.

f. Operating hours.

g. Number of chiller starts.

h. Temperature and pressure of operating set points.

i. Entering- and leaving-fluid temperatures of evaporator and condenser.

j. Difference in fluid temperatures of evaporator and condenser.

k. Fluid flow of evaporator and condenser.

l. Refrigerant pressures in evaporator and condenser.

m. Refrigerant saturation temperature in evaporator and condenser.

n. Pump status.

o. Antirecycling timer status.

p. Discrete output status of various devices

q. Percent of maximum motor amperage.

r. Compressor bearing temperature.

s. Motor bearing temperature.

t. Motor winding temperature.

u. Oil temperature.

v. Oil discharge pressure.

w. Phase current.

x. Percent of motor rated load amperes.

y. Phase voltage.

z. Demand power (kilowatts).

aa. Energy use (kilowatt-hours).

bb. Power factor.

cc. Evaporator refrigerant temperature.

dd. Evaporator and condenser pressure.

ee. Compressor speed.

ff. Compressor discharge temperature.

gg. VFD status.

4. Control Functions:

a. Manual or automatic startup and shutdown time schedule.

b. Entering and leaving chilled-water temperatures, control set points, and motor load limits. Evaporator fluid temperature shall be reset based on return-water temperature.

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c. Current limit and demand limit.

d. Condenser-fluid temperature.

e. External chiller emergency stop.

f. Antirecycling timer.

g. Variable evaporator flow.

5. Manually Reset Safety Controls: The following conditions shall shut down chiller and require manual reset:

a. Low evaporator pressure or temperature; high condenser pressure.

b. Low evaporator fluid temperature.

c. Low oil differential pressure.

d. High or low oil pressure.

e. High oil temperature.

f. High compressor-discharge temperature.

g. Loss of condenser-fluid flow.

h. Loss of evaporator-fluid flow.

i. Motor overcurrent.

j. Motor controller fault.

k. Extended compressor surge.

6. Trending: Capability to trend analog data of up to five parameters simultaneously over an adjustable period and frequency of polling.

7. Security Access: Provide electronic security access to controls through identification and password with at least three levels of access: view only; view and operate; and view, operate, and service.

8. Control Authority: At least four conditions: Off, local manual control at chiller, local automatic control at chiller, and automatic control through a remote source.

Q. Insulation:

1. Material: Closed-cell, flexible elastomeric, thermal insulation complying with ASTM C 534, Type I for tubular materials and Type II for sheet materials.

2. Thickness: 1/2 inch (13 mm) Closed-cell and 1/2 inch (13 mm)]Open-cell and 3/4 inch (5

mm) vinyl

3. Adhesive: As recommended by insulation manufacturer and applied to 100 percent of insulation contact surface. Seal seams and joints.

4. Factory-applied insulation over cold surfaces of chiller capable of forming condensation.

Components shall include, but not be limited to, evaporator shell and end tube sheets, refrigerant suction pipe from evaporator to compressor, cold surfaces of compressor, refrigerant-cooled motor, and auxiliary piping.

5. Water boxes insulation including nozzles shall be provided with the chiller supply for field installation.

a. Before insulating steel surfaces prepare surfaces for paint, and prime and paint as indicated for other painted components. Do not insulate unpainted steel surfaces.

b. Seal seams and joints to provide a vapor barrier.

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c. After adhesive has fully cured, paint exposed surfaces of insulation to match other painted parts.

R. Finish:

1. Paint chiller, using manufacturer's standard procedures, except comply with the following minimum requirements:

a. Provide at least one coat of primer with a total dry film thickness of at least 2 mils (0.05 mm).

b. Provide at least two coats of epoxy finish with a total dry film thickness of at least 4 mils (0.10 mm).

c. Paint surfaces that are to be insulated before applying the insulation.

d. Paint installed insulation to match adjacent uninsulated surfaces.

e. Color of finish coat to be manufacturer's standard

2. Provide Owner with quart container of paint used in application of topcoat to use in touchup applications after Project closeout.

S. Accessories:

1. Vibration Isolation:

a. Chiller manufacturer shall furnish vibration isolation for the chiller.

b. Spring Isolator:

1) Stable in operation and designed for not less than 30 percent reserve deflection beyond actual operating conditions. Isolators shall be designed such that the Kx/Ky ratio shall be 1.0 or more for stability.

2) Provide PVC or neoprene-coated springs and hot-dip, galvanized-steel components. Aluminum components shall be etched and painted. Nuts, bolts, and washers shall be zinc electroplated.

3) Isolators shall be adjustable and with an open spring, having one or more coil springs attached to a top compression plate and a baseplate. An elastomeric pad with a minimum thickness of 0.25 inch (6 mm) shall be bonded to the baseplate.

4) Spring assembly shall be removable and shall fit within a welded steel enclosure consisting of a top plate and rigid lower housing, which serves as a blocking device during installation. Isolated restraining bolts shall not be engaged during normal operation and shall connect the top plate and lower housing to prevent the isolated equipment from rising when drained of fluid.

5) Isolators shall be selected for a nominal 2-inch (50-mm) deflection.

T. New Chiller Capacities and Characteristics:

Values between brackets to be specified by manufacturer according to the chiller selection

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1. Capacity: 400 tons.

2. Full-Load Efficiency (COP): […].

3. Full-Load Efficiency (Power Input/Cooling Output): […] kW/ton

4. Part-Load Efficiency (IPLV): […] to be provided according to AHRI

5. Evaporator:

a. Pressure Rating: 150 psig.

b. Number of Passes: Two.

c. Fluid Type: Water.

d. Design Fluid Flow Rate: […] gpm.

e. Minimum Fluid Flow Rate: […] gpm.

f. Entering-Fluid Temperature: 54 deg F.

g. Leaving-Fluid Temperature: 44 deg F.

h. Fluid Pressure Drop: […] Ft wg.

i. Fouling Factor: [0.0001 sq. ft. x h x deg F/Btu].

6. Condenser:

a. Pressure Rating: 150 psig.

b. Number of Passes: Two.

c. Fluid Type: Water.

d. Design Fluid Flow Rate: […] gpm.

e. Entering-Fluid Temperature: 85 deg F.

f. Leaving-Fluid Temperature: 95 deg F.

g. Fluid Pressure Drop: […] Ft wg.

h. Fouling Factor: 0.00025 sq. ft. x h x deg F/Btu.

7. Compressor:

a. Rated Load Amperes: […].

8. Chiller Electrical Requirements:

a. Power Input: […] kW.

b. Power Factor: 0.95 or higher.

c. Minimum Circuit Ampacity: […].

d. Maximum Overcurrent Protection Device: […].

e. Volts: 400.

f. Phase: Three.

g. Hertz: 50.

9. Noise Rating: 85 sound power level when measured according to AHRI 575. Provide factory-installed sound treatment if necessary to achieve the performance indicated.

2.3 SOURCE QUALITY CONTROL

A. Perform functional tests of chillers before shipping.

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B. Factory performance test water-cooled chillers, before shipping, according to AHRI 550/590.

1. Test the following conditions:

a. Design conditions indicated.

b. Reduction in capacity from design to minimum load in steps of 25 with condenser fluid at design conditions.

c. Reduction in capacity from design to minimum load in steps of 25 with varying entering condenser-fluid temperature from design to minimum conditions in [5 deg F (3 deg C)] increments.

d. 10 point(s) of varying part-load performance to be selected by Owner at time of test.

C. Factory sound test water-cooled chillers, before shipping, according to AHRI 575.

1. Test the following conditions:

a. Design conditions indicated.

b. Chiller operating at calculated worst-case sound condition.

c. At five point(s) of varying part-load performance to be selected by Owner at time of test.

D. For chillers located indoors, rate sound power level according to AHRI 575.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine chillers before installation. Reject chillers that are damaged.

B. Examine roughing-in for equipment support, anchor-bolt sizes and locations, piping, and electrical connections to verify actual locations, sizes, and other conditions affecting chiller performance, maintenance, and operations before equipment installation.

1. Final chiller locations indicated on Drawings are approximate. Determine exact locations before roughing-in for piping and electrical connections.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 CHILLER INSTALLATION

A. Coordinate sizes and locations of concrete bases with actual equipment provided. Cast anchor-bolt inserts into bases.

1. Comply with requirements for vibration isolation devices specified in Section 230548.13

"Vibration Controls for HVAC."

B. Maintain manufacturer's recommended clearances for service and maintenance.

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C. Install separate devices furnished by manufacturer and not factory installed.

3.3 CONNECTIONS.

A. Comply with requirements for piping specified in Section 232113 "Hydronic Piping," Section 232116 "Hydronic Piping Specialties," Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to chiller to allow service and maintenance.

C. Evaporator Fluid Connections: Connect to evaporator inlet with shutoff valve, strainer, flexible connector, thermometer, and plugged tee with pressure gage. Connect to evaporator outlet with shutoff valve, balancing valve, flexible connector, flow switch, thermometer, plugged tee with shutoff valve and pressure gage, flow meter (optional), and drain connection with valve.

Make connections to chiller with a flange.

D. Condenser Fluid Connections: Connect to condenser inlet with shutoff valve, strainer, flexible connector, thermometer, and plugged tee with pressure gage. Connect to condenser outlet with shutoff valve, balancing valve, flexible connector, flow switch, thermometer, plugged tee with shutoff valve and pressure gage, flow meter (optional) and drain connection with valve.

Make connections to chiller with a flange.

E. Connect each chiller drain connection with a union and drain pipe, and extend pipe, full size of connection, to floor drain. Provide a shutoff valve at each connection.

3.4 STARTUP SERVICE

A. Engage a factory-authorized service representative to perform startup and commissioning service.

1. Complete installation and startup checks according to manufacturer's written instructions.

2. Verify that refrigerant charge is sufficient and chiller has been leak tested.

3. Verify that pumps are installed and functional.

4. Verify that thermometers and gages are installed.

5. Operate chiller for run-in period.

6. Check bearing lubrication and oil levels.

7. For chillers installed indoors, verify that refrigerant pressure relief device is vented outdoors.

8. Verify proper motor rotation.

9. Verify static deflection of vibration isolators, including deflection during chiller startup and shutdown.

10. Verify and record performance of fluid flow and low-temperature interlocks for evaporator and condenser.

11. Verify and record performance of chiller protection devices.

12. Test and adjust controls and safeties. Replace damaged or malfunctioning controls and equipment.

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B. Inspect field-assembled components, equipment installation, and piping and electrical connections for proper assembly, installation, and connection.

C. Prepare test and inspection startup reports.

3.5 DEMONSTRATION

A. Engage a factory-authorized service representative to train Owner's maintenance personnel for at least 40 hours to adjust, operate, and maintain chillers demonstration shall include a pre-test and post training test to confirm knowledge transfer.

END OF SECTION 236426.11

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VIBRATION CONTROLS FOR HVAC 230548.13 - 1

SECTION 230548.13 - VIBRATION CONTROLS FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Housed-spring isolators.

2. Restrained-spring isolators.

3. Housed-restrained-spring isolators.

4. Vibration isolation equipment bases.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include rated load, rated deflection, and overload capacity for each vibration isolation device.

2. Illustrate and indicate style, material, strength, fastening provision, and finish for each type and size of vibration isolation device type required.

B. Shop Drawings:

1. Detail fabrication and assembly of equipment bases. Detail fabrication including anchorages and attachments to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting.

2. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting.

C. Delegated-Design Submittal: For each vibration isolation device.

1. Include design calculations for selecting vibration isolators and for designing vibration isolation bases.

1.3 INFORMATIONAL SUBMITTALS

A. Coordination Drawings: Show coordination of vibration isolation device installation for HVAC piping and equipment with other systems and equipment in the vicinity, including other supports and restraints, if any.

B. Qualification Data: For testing agency.

C. Provide seismic and vibration calculation sheet in accordance with Cairo, Egypt zone of location for the chiller restraint devices.

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D. Welding certificates.

1.4 QUALITY ASSURANCE

A. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel."

PART 2 - PRODUCTS

2.1 HOUSED-SPRING ISOLATORS

A. Freestanding, Laterally Stable, Open-Spring Isolators in Two-Part Telescoping Housing:

1. Outside Spring Diameter: Not less than 80 percent of the compressed height of the spring at rated load.

2. Minimum Additional Travel: 50 percent of the required deflection at rated load.

3. Lateral Stiffness: More than 80 percent of rated vertical stiffness.

4. Overload Capacity: Support 200 percent of rated load, fully compressed, without deformation or failure.

5. Two-Part Telescoping Housing: A steel top and bottom frame separated by an elastomeric material and enclosing the spring isolators.

a. Drilled base housing for bolting to structure with an elastomeric isolator pad attached to the underside. Bases shall limit floor load to 500 psig (3447 kPa).

b. Top housing with elastomeric pad.

2.2 RESTRAINED-SPRING ISOLATORS

A. Freestanding, Laterally Stable, Open-Spring Isolators with Vertical-Limit Stop Restraint:

1. Housing: Steel housing with vertical-limit stops to prevent spring extension due to weight being removed.

a. Base with holes for bolting to structure with an elastomeric isolator pad attached to the underside. Bases shall limit floor load to 500 psig (3447 kPa).

b. Top plate with elastomeric pad.

c. Internal leveling bolt that acts as blocking during installation.

2. Restraint: Limit stop as required for equipment and authorities having jurisdiction.

3. Outside Spring Diameter: Not less than 80 percent of the compressed height of the spring at rated load.

4. Minimum Additional Travel: 50 percent of the required deflection at rated load.

5. Lateral Stiffness: More than 80 percent of rated vertical stiffness.

6. Overload Capacity: Support 200 percent of rated load, fully compressed, without deformation or failure.

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2.3 HOUSED-RESTRAINED-SPRING ISOLATORS

A. Freestanding, Steel, Open-Spring Isolators with Vertical-Limit Stop Restraint in Two-Part Telescoping Housing.

1. Two-Part Telescoping Housing: A steel top and bottom frame separated by an elastomeric material and enclosing the spring isolators. Housings are equipped with non-adjustable snubbers to limit vertical movement.

a. Drilled base housing for bolting to structure with an elastomeric isolator pad attached to the underside. Bases shall limit floor load to 500 psig (3447 kPa).

b. Threaded top housing with adjustment bolt and cap screw to fasten and level equipment.

2. Outside Spring Diameter: Not less than 80 percent of the compressed height of the…