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Mesquite Independent School District

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1. 2 2 MACHINE ROOM SAFETY SYSTEM A A ventilation system and controls shall be furnished under other sections of these specifications to meet the ventilation requirements of the American 47 Society of Heating Refrigeration and Air Conditioning Engineers ASHRAE Standard 15 most recent edition For Group A1 refrigerant machines furnish one 1 oxygen deprivation sensor and transmitter to detect oxygen levels below 19 5 percent by volume adjustable down to 596 within the immediate area of the machine In lieu of this sensor provide separate refrigerant specific sensors and transmitters for each machine to detect refrigerant concentrations as low as one 1 part per million PPM adjustable within the immediate area of the machine Both oxygen deprivation and refrigerant specific sensors shall independently transmit a signal to a gas alarm monitor which shall energize the Mechanical Ventilation System and activate audible and visual alarms Gas alarm monitoring panels shall be designed for refrigerant Machine Room applications and have the following features 1 Seven 7 segment four 4 digit LED Display of each sensor reading to include a Gas Concentration in percent by volume or PPM for each sensor b Peak Gas Concentration in percent 96 by volume or PPM for each sensor c Each Gas Type Sensor is being monitored simultaneously when multiple gas type sensors are utilized d Two 2 stage alarm le
2. 508C ETL or CSA certified All drive manufacturers shall require local supplier representation within 50 miles of the job site and a suitable service organization capable of repairing equipment within a 24 hour period of notification All drive manufacturers shall generally have a full line of locally stocked drives with similar features and in sizes consistent with those specified for emergency 24 hour replacement 28 VFD s shall have a minimum mean time between failure rating of no less than 150 000 hours 14 SUBMITTALS A B Shop Drawings Submit in accordance with Section 15010 Clearly identify all options furnished including detailed wiring diagrams indicating required field connections and wiring to be provided under Division 16 and for Temperature Control System interface Submittal shall include a list of each specification section paragraph number and notation on each specific feature function or method of operation in which compliance is intended Lack of compliance with this requirement will be cause for rejection of submittals 15 PRODUCT HANDLING A Storage handling and protection of materials shall be in accordance with Section 15010 All drives shall be completely wrapped at the factory with a semi dust tight enclosure similar to a heat shrink plastic to prevent dust and debris from getting into the drive enclosure Drives shall continue to be protected during construction in a simi
3. equipment Rejected items shall be replaced promptly at no cost 3 2 OPERATING PROCEDURES AND REQUIREMENTS A Three 3 copies of the installation operating and service maintenance instructions illustrated and bound form shall be furnished by the manufacturer Include spare parts list with this documentation At machine start up the manufacturer shall furnish skilled factory trained personnel to supervise check out performance make any required adjustments place the unit in service and instruct the Owner s personnel for a full period of four 4 hours Services shall include Leak Testing Refrigerant Pressure Testing System Evacuation for low pressure machines System Dehydration for low pressure machines Charge Chiller with Operating Charge of Refrigerant and Oil She st All training shall be scheduled with the Owner and documented start and finish times list of attendees and information reviewed This is in addition to the start up services noted above The manufacturer of the water chiller shall provide complete wiring diagrams to be supplied to the Electrical and Temperature Controls Systems installers and shall provide drawings indicating all required external wiring and arrangements of wiring connections to include machine room 51 D safety systems Factory authorized service personnel and routine repair parts shall be locally available within 24 hours of a trouble call 3 3 INSTALLATION P
4. total of two 2 to maintain 40 Deg F pan water temperature at 0 Deg F ambient with a low water cut out switch for each basin Provide pan heater contactors one 1 with each tower cell in a NEMA 3R control panel enclosure for control of the pan heaters to include a thermostat adjustable and overload headers One thermostat and heater controller will be required per common basin L Access and Safety equipment shall include but not be limited to 1 Hinged access panels on both end walls for access to the eliminators and fan plenum section Supports framing and handle shall be heavy duty Type 304 stainless steel Hinges shall be Type 304 stainless steel 2 Type 304 stainless steel or heavy gauge aluminum fan guard over 57 each cylinder as specified herein 3 Type 304 stainless steel or heavy gauge aluminum safety handrail at the fan deck 4 An OSHA safety cage Type 304 stainless steel or heavy gauge aluminum to extend to 8 0 above finished roof or grade at which access is provided Tower is supported approximately ten feet 10 above the pavement 5 aluminum ladder with access platform to extend from the fan deck to the base of the tower for access to the fan deck 6 Vibration cutout switches one 1 for each fan Provide auxiliary normally open N O contacts for remote monitoring status 7 Provide a Type 304 stainless steel internal walkway between access doors for ease of maintenance of all internal t
5. Chilled Water Setpoint Deg F Electrical Current Limit Setpoint Amps Chiller Operating Mode Chiller Diagnostic Codes Load of full load for unit or for each individual compressor motor Evaporator refrigerant pressure i Condenser refrigerant pressure Chiller control panel shall provide evaporator freeze protection and low limit control This control shall be used to avoid low evaporator refrigerant temperature trip outs during critical periods of chiller operation The control shall take progressively more aggressive load limiting action in response to the severity of the rate of change and the actual value of the evaporator refrigerant temperature A diagnostic code reflecting the operating status shall be automatically displayed at the front panel whenever this control is in effect Control panel shall effect an automatic restart sequence after a power loss or unsuccessful attempt to start A minimum of three 3 restarts shall be attempted within a ten 10 minute period Chiller control panel shall provide a relay output to start the condenser water pump and or enable the cooling tower temperature controls Chiller control panel shall provide an alarm relay output that shall energize whenever a fault requiring manual reset is detected by the panel Output relay shall be compatible with an Owner selected Energy Management System Unit control panel shall provide leaving chilled water temperature reset based on a 4 20ma or 0 10
6. EXECUTION 3 1 INSTALLATION BASE MOUNTED PUMPS INSTALLING CONTRACTOR ONLY A In mounting pumps level by steel shims or steel wedges on each side of each mounting bolt set beneath the baseplate on top of the foundation B After the baseplate is bolted down erect forms around the foundation and grout Exercise care to be sure that the entire space under the baseplate is filled with grout After grout is thoroughly hardened remove wedges and fill holes with non shrinking grout Tighten bolts C Check levelling and alignment and correct if necessary with shims under pump or motor feet 39 Connect piping and support piping independently of the pump lt is imperative that piping be installed in such manner as not to impose any strain on the pump casing Connect gauge cocks and gauges to gauge tappings Connect a gauge cock to the volute air vent connection Pipe a drain to the drip pan and volute drain and route to the nearest floor drain Connect power supply and control wiring to disconnect and motor controller After each unit has been run under actual operating conditions shut it down and again check its alignment and adjust as necessary 3 2 WARRANTIES A Furnish a full one 1 year parts and labor warranty on all pumps to commence at Substantial Completion All warranties will be transferred to the Owner as if the equipment were purchased directly by the Contractor All warranty labor shall be provided by t
7. Mesquite Independent School District to determine the residency of its offerors In part this law reads as follows Section 2252 001 DEFINITIONS 3 Nonresident bidder refers to a person who is not a resident 4 Resident bidder refers to a person whose principal place of business is in this state including a contractor whose ultimate parent company or majority owner has its principal place of business in this state Section 2252 002 AWARD OF CONTRACT TO NONRESIDENT BIDDER A governmental entity may not award a governmental contract to a nonresident bidder unless the nonresident underbids the lowest bid submitted by a responsible resident bidder by an amount that is not less than the amount by which a resident bidder would be required to underbid the nonresident bidder to obtain a comparable contract in the state in which the nonresident s principal place of business is located Name of Company is under Section 2252 001 3 and 4 a Resident Bidder Nonresident Bidder My principal place of business under Texas Government Gode Section 2252 001 3 and 4 is in the city of in the State of Signature of Authorized Company Representative Print Name Title Date TO BE SIGNED AND RETURNED DEVIATION OR COMPLIANCE SECTION DEVIATIONS In the event the undersigned Proposer intends to deviate from the general terms conditions special conditions or specifications contrary to those listed in the Terms and Conditions and o
8. Owner training and assist in providing close out documentation to include furnishing warranties PART 2 PRODUCTS 2 1 GENERAL A The head capacities indicated in the schedules are listed for bidding purposes only Calculate the operating head at each pump taking into consideration the actual routing of the various lines pressure drops in heat exchangers and coils exact lengths of pipe fittings etc Submit these calculations together with copies of manufacturer s performance curves as shop drawings on each pump Clearly mark the curves for each pump to indicate the diameter of the impeller and the selection point Motors shall be constant speed open drip proof type and shall be so sized with relation to the pump impeller that the required brake horsepower shall not exceed the rated motor horsepower at any point on the pump curve Pumps operating in parallel shall not cavitate when operated alone Provide each pump with a constant speed motor wound for the electrical characteristics indicated on the Drawings Motors shall be of the nominal starting torque low starting current ball bearing horizontal 40 Deg C ambient drip proof squirrel cage induction type Motors over 1 H P shall be high efficiency type equal to G E Energy Saver Baldor Super E or A O Smith E Plus Ill All motors on all pumps shall be of the same manufacture 37 Provide each centrifugal pump with an enclosed impeller whose diameter is 9096 or less
9. addition to and not in lieu of any other rights which the District may have in law or equity The price to be paid by the District shall be that contained in the contractor s proposal which the contractor warrants to be no higher than seller s current prices on orders by others for products of the kind and specification covered by this contract for similar quantities under similar or like conditions and methods of purchase In the event contractor breaches this warranty the price of the items shall be reduced to the contractor s current prices on orders by others or in the alternative the District may cancel this contract without liability to contractor for breach or contractor s actual expense The contractor warrants that no person or selling agency has been employed or retained to solicit or secure this contract upon an agreement or understanding for commission percentage brokerage or contingent fee expecting bona fide employees of bona fide established commercial or selling agencies maintained by the contractor for the purpose securing business For breach or violation of this warranty the District shall have the right in addition to any other right or rights to cancel this contract without liability and to deduct from the contract price or otherwise recover the full amount of such commission percentage brokerage or contingent fee All contracts and agreements between merchants and Mesquite Independent School District shall strictly adh
10. as stated herein and in accordance with Section 15010 1 6 OPERATION AND MAINTENANCE DATA A Submit three 3 copies of installation operation and maintenance data with close out documentation at Substantial Completion Include manuals with information on proper installation start up instructions maintenance data spare parts lists controls wiring diagrams accessories and a trouble shooting guide Additionally provide a typewritten copy of the start up log for each machine indicating operating parameters and conditions which shall be signed by the factory authorized startup technician 1 7 WARRANTY A Provide a one 1 year parts and labor warranty on each chilled water machine as an assembly to begin at Substantial Completion as established by the Owner 42 Provide an extended four 4 year parts only warranty on each chilled water machine as an assembly to begin at the end of the first year warranty C Installing Contractor shall receive chillers install them and provide the warranty services as indicated above PART 2 PRODUCTS 2 1 ROTARY SCREW WATER COOLED CHILLERS A Compressor and Motor 1 Compressors shall be of the rotary twin helical semi hermetic screw type and shall utilize either R 410a or R 134a refrigerant Units shall be shipped fully charged Chillers shall be able to unload to a minimum of 10 1596 of design tonnage with a constant entering condenser water temperature of
11. certify that 1 Contractor has obtained all required criminal history record information regarding its covered employees None of the covered employees has a disqualifying criminal history 2 If Contractor receives information that a covered employee subsequently has a reported criminal history Contractor will immediately remove the covered employee from contract duties and notify the District in writing within three 3 business days 3 Upon request Contractor will provide the District with the name and any other requested information of covered employees so that the District may obtain criminal history record information on the covered employees 4 Ifthe District objects to the assignment of a covered employee on the basis of the covered employee s criminal history record information Contractor agrees to discontinue using that covered employee to provide services for the District Noncompliance or misrepresentation regarding this certification may be grounds for contract termination Company Name Signature of Authorized Representative Printed Name Date REFERENCES List below three 3 institutions companies for whom you have provided goods in the past 12 months 1 Institution Company Name Street Address City State Zip Contacts Name Phone Number 2 Institution Company Name Street Address City State Zip Contacts Name Phone Number 3 Institution Company Name Street Address City State Zip
12. do agree to indemnify protect defend with counsel approved by the District and hold harmless the District and its affiliated enterprises representatives of the District and their respective officers directors members of the board partners employees and agents collectively Indemnitees from and against all claims damages losses liens causes of action suits judgments and expenses including attorney fees of any nature kind or description collectively Liabilities of any person or entity whomsoever arising out of caused by or resulting from the performance of services or provision of goods by Vendor pursuant to this contract or any part thereof or anyone for whose acts it may be liable even if it is caused in part by the negligence or omission of any Idemnitee so long as it is not caused by the sole negligence or willful misconduct of any Indemnitee 10 11 12 13 14 15 Non Appropriation of Funding No term Contract or Agreement may exceed period of one 1 year from the approved contract date without specific authorization of the Mesquite Independent School District Such contract is a commitment of the District s current revenue only Should funding for the continuance of this Contract be withdrawn by the Board the District retains the right to terminate the agreement in accordance with the termination provision stated herein and without pecuniary risk or penalty Whenever an article or material i
13. equipment and materials shall be installed in a workmanlike manner by experienced mechanics and as recommended by the equipment manufacturer Rotary Screw Chillers shall be certified in accordance with the latest edition of ARI Standard 550 to meet the scheduled capacities Each unit shall bear the ARI Certification Label for Rotary Water Cooled Chillers as applicable Conform to ANSI UL 465 for construction of chillers 41 Conform to ANSI ASME Section VIII Boiler and Pressure Vessel Code for construction and testing of chillers Conform to the latest version of ANSI ASHRAE Standard 15 for construction and operation of chillers 1 4 SUBMITTALS A Product Data Submit complete manufacturer s descriptive literature and installation instructions to include cut sheets shipping and operating weights capacity at all scheduled conditions electrical requirements all power and control wiring diagrams equipment weights operating weight of refrigerant charge required service clearances specified optional accessories appurtenances and locations of all field connections Shop Drawings Submit in accordance with Owner furnished general requirements 1 5 PRODUCT HANDLING A Cover and protect material in transit and at site to include all field piping connection points Material not properly protected and stored and which is damaged or defaced during construction shall be rejected Storage and protection of materials shall be
14. field data typewritten on a new form and be included with the Operations and Maintenance Manuals 52 The manufacturer shall furnish four 4 hours of chiller training which shall occur separately from chiller start up Factory authorized service personnel and routine repair parts shall be locally available within 24 hours of a trouble call END OF SECTION 53 SECTION 15712 INDUCED DRAFT CROSSFLOW COOLING TOWERS STAINLESS STEEL PART 1 GENERAL 1 1 1 2 1 3 1 4 RELATED REQUIREMENTS A Comply with Owner furnished General Requirements and all referenced documents B Comply with all other Sections as applicable Refer to other Divisions for coordination of this work with other portions of work specified therein SCOPE A Furnish induced draft single sided air entry vertical discharge factory fabricated and assembled stainless steel crossflow type cooling towers as specified herein and as indicated on the equipment schedule complete with all specified accessories B Any accessories not factory assembled or installed shall be installed in the field by the installer of the towers under this section of the specifications at no additional cost C The equipment specified herein is being pre purchased by the Owner and will be assigned to the Contractor for final installation and warranty coverage QUALITY ASSURANCE A All equipment and materials shall be new and of the best quality B Provide certification
15. main contacts with weld resistant silver cadmium faces Auxiliary interlocks that interface with the control panel shall be low resistance having palladium silver contacts Each motor starter shall include a 1 0 KVA control power transformer with fused primary and 120 volt secondary Current transformers of the proper size ratio and burden capacity shall be provided to provide a signal to the control panel and optional devices Control relays shall be provided within the motors starter to interface with the control panel Power wiring within the starter shall be Type MTW stranded copper 90 Deg C Power wire bends shall show no evidence of nicking or insulation degradation Control wire shall be Type MTW stranded copper 90 Deg C 14 gauge minimum Starter shall include an advanced motor protection system incorporating electronic three phase overloads current transformers This electronic motor protection system shall monitor and protect against the following conditions Three Phase Overload Protection Overload Protection During Start Up Phase Imbalance Phase Loss Phase Reversal Low Voltage Distribution fault protection is required by compressor design consisting of three phase current sensing devices that monitor the status of the current Distribution faults of 1 1 2 electrical cycle durations shall be detected and the compressor motor shall be disconnected within six 6 electrical cycles Alternately any or a
16. naming several products or manufacturers means that only the manufacturers named will be considered Products specified by naming only one product and manufacturer means that no option exists unless a substitution is accepted Submit a request for substitution for any product or manufacturer not specifically named Products specified by Description Reference Standard and naming several products or manufacturers means that any product and manufacturer named meeting those descriptions and standards will be 24 considered Submit a request for substitution for any product or manufacturer not specifically named E Limitations or Substitutions 1 During Bidding Period Instructions to Bidders furnished by the Owner will govern times for submitting requests for substitutions under requirements specified in this Section 2 No later than ten 10 days prior to the bid date Proposer shall notify the Engineer in writing of any desired substitutions of products in place of those specified These requests will be considered and if a favorable response is determined this will be documented in the form of an Addenda 3 Substitutions will not be considered when indicated or implied on Shop Drawings or product data submittals without separate formal request when requested directly by subcontractor or supplier or when acceptance will require substantial revision of Contract Documents 4 Substitute products shall not be ordered or installed wit
17. not returned the vendor s name is removed from the vendor s list All prices will be guaranteed for sixty 60 days from the date of the proposal opening It is understood and agreed that MISD reserves the right to increase or decrease quantities or modify condition and specifications by mutual agreement with the selected supplier both at the time of acceptance of this proposal offer as so modified and subsequent thereto Propose unit price on quantity specified extend and show total In case of errors in extension unit prices shall govern 20 21 22 23 24 25 The District is exempt from Federal Excise Tax State and Local Tax Do not include tax in your proposal totals If it is determined that tax was included in the proposal it will not be included in the tabulation or any awards Tax exemption certificate will be furnished upon request Where applicable samples must be submitted upon request Cash discounts offered may be considered in determining the successful supplier Cash discount period shall start from the date of receipt of acceptable invoice or from date of receipt of acceptable material whichever is the later Vendor hereby affirmatively states that it has not participated in any act of collusion favoritism gratuity or inside dealings with any member of the staff of Mesquite Independent School District or it s Board of Trustees Mesquite Independent School District will receive all merchand
18. of the maximum impeller which the manufacturer shows in their published curves for that pump Provide pump casings and mechanical seals suitable for operation under static and dynamic heads for that pump Pump baseplates shall be constructed of welded structural steel shapes Provide with raised lip drip pans with threaded drain connection where handling fluids with operating temperatures below 60 Deg F such as chilled water Furnish baseplates with 1 8 thick steel drain pan of sufficient width to extend under and a minimum of two inches 2 beyond and catch any drip from connecting flanges Removable attachments will not be acceptable Cover pans with rust inhibitive paint Coupling shall be of the flexible type capable of withstanding shock misalignment and end float as manufactured by Woods Motor and pump alignment shall be field adjustable but shall be factory aligned on a common base plate Supplier shall furnish adequate shims or other alignment accessories necessary to complete field alignment Coupling Guard Coupling guard shall be all metal and fastened to baseplate Guard shall be removable All exposed moving parts shall be guarded from all sides Name Plates Furnish stainless steel data plates permanently secured to the pump Bearings shall be the heavy duty ball type on both ends of frame and be regreasable Provide 1 4 inch gauge tappings fitted with pipe plugs at each pump flange Provide minimum 1 2 in
19. recognized experts to perform the tests and shall provide certified laboratory tests certified factory reports and work sheets or other certified data to support results of any tests required END OF SECTION 27 SECTION 15150 VARIABLE FREQUENCY MOTOR CONTROLLERS PART 1 GENERAL 1 1 RELATED REQUIREMENTS A Comply with Owner furnished General Requirements and related documents Comply with all other Division 15 Sections as applicable Refer to other Divisions for coordination of work with other portions of the work SYSTEM DESCRIPTION A Furnish variable frequency motor drives controllers to provide motor speed control for pumping and cooling tower systems as indicated on the drawings or as scheduled for equipment with all apparatus specialties controls etc to make the systems complete Drives shall all typically be the Pulse Width Modulated PWM AC type drives Three phase input power shall be converted to a sine coded variable frequency output used for optimized speed control of induction motors QUALITY ASSURANCE A B All equipment and materials shall be new and of the best quality The manufacturer of the variable frequency motor controller shall have a minimum of fifteen 15 years of experience in the design construction and application of adjustable frequency controls for heating ventilating and air conditioning applications All controllers with factory mounted options shall be UL
20. 6 of the total water circulated Eliminators shall be three pass design PVC shall be listed by the Factory Mutual Approval Guide Combined Inlet Shields The combined inlet shields shall be UV resistant PVC installed on the air inlet face to minimize air resistance prevent water splash out and minimize sunlight exposure to reduce the potential for algae growth in the cold water basin Fans shall be fixed pitch axial flow heavy duty cast aluminum alloy The fan cylinder shall have a smoothly contoured inlet ring and have minimum fan tip clearance Fan guards shall be provided to comply with OSHA Safety Standards and shall be constructed of heavy gauge Type 304 stainless steel of all welded construction Fan and shaft shall be supported by heavy duty self aligning grease lubricated ball bearings designed for a minimum L10 life of 40 000 hours with moisture proof seals and integral slinger rings Provide extended lube lines to permit lubrication from the side of each cell on the exterior of the towers 56 The fan motor drive assembly shall consist of a cast aluminum fan sheave and a motor sheave in a vented enclosure protected from moist air discharge Provide a solid backed multi grooved neoprene polyester belt Belt tension shall be adjusted from the motor base support assembly The fan motors shall be the size scheduled 3 phase 60 Hertz 208 volts single speed 1800 RPM single winding variable torque totally enclose
21. 85 Deg F or a hot gas bypass system shall be provided as required to meet this requirement Refrigeration system control shall result in 0 5 Deg F control of leaving chilled water temperature and allow for infinitely variable modulated capacity control The motor shall be semi hermetic and either suction or liquid refrigerant cooled Hot gas motor cooling is not allowed Motors shall have three RTD s in the motor windings one per phase to protect against high motor temperature at start up Compressor motors shall be direct drive type with a nominal maximum speed of 3 600 RPM There shall be a minimum of two 2 compressors and two 2 independent refrigerant circuits with discharge check valves at each compressor Provide refrigerant isolation valves on the compressor discharge and suction lines as well as on the liquid lines three 3 separate valves per system B Evaporator and Condenser 1 The evaporator and condenser shall be built in accordance with the latest edition of ANSI ASHRAE Standard 15 Safety Code for Mechanical Refrigeration Compact water boxes shall be designed for 150 psig maximum working pressure and shall be flanged and gasketed for easy removal and access to the tubes The water boxes shall have 150 pound ANSI raised face factory welded flanged water connections for both chilled and condenser water field piping connections Evaporator tubes shall be made of copper and have a minimum 0 025 wall thick
22. ACTURERS A B Puroflex Corp Lakos PART EXECUTION 3 1 3 2 DELIVERY AND PROTECTION A Include delivery of all equipment specified to the site Equipment shall be delivered by the manufacturer to an Owner approved location where the equipment will be stored until the Contractor is ready to receive the equipment at the project site All equipment shall be handled carefully to avoid damage and be protected from exposure to the weather and dirt All equipment shall be examined upon delivery to the site and evidence of abuse damage or exposure to weather and dirt shall be grounds for refusal to accept individual pieces of equipment Rejected items shall be replaced promptly at no cost INSTALLATION FOR INSTALLING CONTRACTOR ONLY A Install packaged filtration systems level on four inch 4 thick with 1 chamfered edges concrete housekeeping or structural support pads Fasten base of unit to support pad with corrosion resistant fasteners Install packaged filtration systems using companion flanges as required for the application Refer to Drawings for installation details Make all piping connections as indicated and detailed on submittals Verify that all field power and control wiring has been connected as required Install all accessories not factory installed to include the pressure gauge kit Touch up any factory applied protective coating that was damaged during installation or shipping
23. AL 1 1 MATERIALS AND EQUIPMENT A All materials and equipment purchased shall be new No used or reconditioned equipment will be allowed Substitutions The products of other manufacturers will be acceptable only if in the opinion of the Engineer the substitute material is of a quality as good or better than the material specified and will serve with equal efficiency maintainability and dependability the purpose for which the items specified were intended Listed Manufacturers 1 Manufacturers listed in a product or system specification are those manufacturers considered capable of manufacturing products conforming to the specification requirements and are listed therein to establish a standard The listing of a manufacturer does not imply acceptance or approval of any standard product of that manufacturer Products offered by listed manufacturers shall be equal to or superior in all respects to that specified by named products and shall meet or exceed specification requirements The description of specific qualities takes precedence over the reference standards and the description of qualities and reference standards together take precedence over the named product of listed manufacturers Product Options 1 Products specified only by Reference Standards or by Description only means that any product meeting those standards or descriptions by any manufacturer will be considered Products specified by
24. Contacts Name Phone Number 20 EDUCATIONAL PURCHASING COOPERATIVE OF NORTH TEXAS Several governmental entities around the Mesquite Independent School District have indicated an interest in being included in this contract Should these governmental entities decide to participate in this contract would you the vendor agree that all terms conditions specifications and pricing would apply Yes No If you the vendor checked yes the following will apply Governmental entities utillizing Internal Governmental contracts with the Mesquite Independent School District will be eligible but not obligated to purchase materials services under the contract s awarded as a result of this solicitation All purchases by governmental entity other than Mesquite Independent School District will be billed directly to that governmental entity and paid by that governmental entity Mesquite Independent School District will not be responsible for another governmental entitys debts Each governmental entity will order their own material service as needed For information regarding the Educational Purchasing Cooperative of North Texas please visit their website at the following address http www epcnt com 21 CONFLICT OF INTEREST QUESTIONNAIRE FORM CIQ For vendor or other person doing business with local government entity OFFICE USE ONLY This questionnaire reflects changes made to the law by H B 1491 80 th Leg Regular Session This
25. D Each pump shall be sized for the flow and HP listed on the schedule or as indicated elsewhere herein manufacturer of sweeper piping system shall determine the required head pressure based on the layout shown on the Drawings Each pump shall be the close coupled end suction type and be made of cast iron construction be bronze fitted have mechanical seals and have a cast iron pre strainer Strainer screen shall be made of stainless steel and have 1 8 inch mesh openings Motors shall be the premium efficiency TEFC type and be rated for 208 Volt V 60 Hz Motors shall be a minimum of 5 0 HP in size Refer to Specification Section 15540 for general pump requirements 2 3 BASIN SWEEPER PIPING SYSTEM A All piping pipe fittings and nozzles required for the basin sweeper system in the cooling tower shall be factory supplied and installed by tower manufacturer Piping unions and valves between the basin connections and the filter packaged solids separator system shall be furnished by the mechanical systems installer Piping shall be Schedule 80 PVC and shall be equal to sizes shown on drawings Provide complete piping system with number of nozzles and locations to be similar to that detailed on the Drawings All piping and nozzles installed inside the cooling towers shall be provided and installed by the tower manufacturer and installed at the factory under Section 15712 of the Specifications 61 2 4 ACCEPTABLE MANUF
26. Flexible hoses shall not be used for connection between packaged filtration system and remainder of circulating piping system Use threaded or flanged piping fittings only Provide unions as required Program automatic controls to energize filtration system on a timed cycle 62 per the manufacturer s recommendations to include backwash timer Provide a full one 1 year parts and labor warranty following Substantial Completion for the entire unit Contractor shall provide all warranties on Owner furnished pre purchased equipment END OF SECTION 63 DRAWINGS MARY MOSS ELEMENTARY SCHOOL HVAC SYSTEM Reed Wells Benson amp Company Consulting Engineers COIT CENTRAL TOWER SUITE 1100 PHONE 972 788 4222 CHILLER SCHEDULE WATER COOLED qe WATER COOLED SCREW are ENTERING WATER TEMP DEG F 162 LEAVING WATER TEMP DEG F 40 0 MAX WATER PRESS DROP FT FOULING FACTOR 0 00010 ENTERING WATER TEMP DEG F LEAVING WATER TEMP DEG F 85 0 MAX WATER PRESS DROP FT 20 0 FOULING FACTOR 0 00025 0 720 16 7 0 496 KW TON Ej a MINIMUM CIRCUIT AMPS 284 ii MAXIMUM OVERCURRENT PROTECTION VOLTS PHASE HERTZ 208 3 60 MANUFACTURER MODEL NO TRANE RTWD 100 REMARKS HFC 134A OWNER PRE PURCHASED DATA EVAPORATOR CONDENSOR DATA z gt gt lt c z 3 m m 20 SS D r lt DATE UPGRADES PR
27. Mesquite Independent School District Request For Proposal for Cooling Tower Replacement Project Equipment Only Proposal 2015 014 Proposal Due February 13 2015 No Later Than 2 00 Place MISD Purchasing Dept 800 E Kearney Mesquite Texas 75149 Mesquite Independent School District Purchasing Department Rusty Talbot Administrative Officer 800 E Kearney Mesquite Texas 75149 Phone 972 882 5542 Fax 972 882 7740 Instructions to Vendors Proposal 2015 014 Due Date February 13 2015 Proposal For Cooling Tower Replacement Project Equipment Only THIS PROPOSAL WILL NOT BE OPENED OR READ PUBLICLY Proposals are solicited for furnishing the merchandise supplies services and or equipment set forth in this proposal One 1 original and three 3 copies of the SEALED proposals must be received in the Purchasing Department 800 E Kearney Mesquite Texas 75149 before 2 00 pm on the above due date All envelopes must be clearly marked Proposal Enclosed and the Proposal number Late proposals will be returned to the vendor unopened Delivery of bid envelope to other Departments within the MISD is NOT considered as delivery to the Purchasing Department Faxed or emailed proposals will not be accepted Proposals may be withdrawn at any time prior to the official opening Alterations made before opening time must be initialed by vendor to guarantee authenticity After the official opening proposals may not
28. NG TOWER AND CHILLED WATER SEPARATOR SYSTEM PART 1 GENERAL 1 1 RELATED REQUIREMENTS A Comply with Owner furnished General Requirements and all referenced documents B Comply with all other Sections as applicable 12 SCOPE A Furnish series type cooling tower water filtration system as specified herein complete with all specified accessories B Filtration System shall include Steel Skid Controls Valves Centrifugal Separator Vessel Pump Pre Strainer raceway power and control wiring control panel and all interconnecting piping and automatic accessories as indicated herein 13 QUALITY ASSURANCE A All equipment and materials shall be new and of the best quality 1 4 SUBMITTALS A Product Data Submit complete manufacturer s descriptive literature installation instructions piping and wiring diagrams indicate all accessories furnished capacities of equipment and pressure drop curves for completed assembly or components B op Drawings Submit in accordance with Owner furnished General Requirements 2 Indicate on shop drawings the calendar date for projected delivery of all equipment to the project 3 Clearly indicate components that require field installation of wiring and piping other than the packaged assembly 15 PRODUCT HANDLING A Cover and protect material in transit and at site Material not properly protected and stored and which is damaged or defaced during transit or storage shall be rejected and repl
29. NTRACTOR SECTION 15150 VARIABLE FREQUENCY MOTOR CONTROLLERS WILL BE DELIVERED TO MISD SERVICE CENTER 800 E KEARNEY MESQUITE TX 75149 UNIT COST SECTION 15540 CENTRIFUGAL PUMPS WILL BE DELIVERED TO MISD SERVICE CENTER 800 E KEARNEY MESQUITE TX 75149 UNIT COST SECTION 15684 ROTARY SCREW WATER COOLED CHILLER 100 450 TONS WILL BE DELIVERED TO CROCKER CRANE L P 2221 E UNION BOWER ROAD IRVING TX 75061 UNIT COST SECTION 15712 INDUCED DRAFT CROSSFLOW COOLING TOWERS STAINLESS STEEL WILL BE DELIVERED TO CROCKER CRANE L P 2221 E UNION BOWER ROAD IRVING TX 75061 UNIT COST SECTION 15723 COOLING TOWER AND CHILLED WATER SEPARATOR SYSTEM WILL BE DELIVERED TO MISD SERVICE CENTER 800 E KEARNEY MESQUITE TX 75149 UNIT COST 70
30. OJECT No REVISION REVISED DWG DRAWN BY COOLING TOWER SCHEDULE DESIGNATION CT 1 2 INDUCED DRAFT CROSS FLOW TYP 610 6 305 PER CELL MOTORS QUANTITY MIN 2 2 0 ONE PER CELL upper ann STARTER sd V F D ONE PER MOTOR cas are XES15E 1285 07FN BASIN HEATERS 2 10 0 KW ONE PER BASIN OWNER PRE PURCHASED REMARKS W WHISPER QUIET FAN lt RWB MARY MOSS ELEMENTARY PROJECT No 14109 00 SHEET No po SCHOOL HVAC SYSTEM mmm mmm 1 02 COIT CENTRAL TOWER SUITE 1100 PHONE 972 788 4222 12001 NORTH CENTRAL EXPWY FAX 972 788 0002 DRAWN BY JMATZEK DALLAS TEXAS 75243 WWW RWB NET U E RAD S 66 CENTRIFUGAL SEPARATOR SCHEDULE oe m eem OUTLET SIZE 21 2 REMARKS OOOO WITH CLOSED RECOVERY SYSTEM SEPARATOR SYSTEM amp PUMP PACKAGE TO BE PRE PIPED AT FACTORY SKID MOUNTED REFER TO PUMP SCHEDULE FOR PUMP REQUIREMENT FOR THIS PACKAGE 4 FULL STREAM SEPARATOR WITH BASIN SWEEPER PIPING 5 OWNER PRE PURCHASED Eme SCHOOLHVACSYSTEM COIT CENTRALTOWER SUITE 1100 PHONE 972 788 4222 12001 NORTH CENTRAL EXPWY FAX 972 788 0002 DRAWN BY JMATZEK DALLAS TEXAS 75243 WWW RWB NET U z G RAD S 67 PUMP SCHEDULE DESIGNATION sP 1 PCHP 1 AND 2 CHP 1 AND 2 CWP 1 AND 2 SERVICE SEPARATOR PUMP PRIMARY CH WATE
31. R SECONDARY CH WATER CONDENSER WATER END SUCTION END SUCTION END SUCTION END SUCTION n MIN PUMP EFFICIENCY VOLTS PHASE HERTZ 208 3 60 208 3 60 208 3 60 208 3 60 MANUFACTURER MODEL PACO 2595 7 PACO 2512 3 3 PACO 3095 7 KO GL II EN KNOTT SO Maa PROVIDED WITH SEPARATOR S 1 AND PRE PURCHASED BY OWNER 2 REFER TO SPEC SECTION 15540 3 OWNER PRE PURCHASED REVISION MARY MOSS ELEMENTARY cw saoo SHEET No SCHOOL HVAC SYSTEM M104 Consulting Engineers DATE 12 08 2014 CENTRAL TOWER SUITE 1100 PHONE 972 788 4222 12001 NORTH CENTRAL EXPWY FAX 972 788 0002 DRAWN BY JMATZEK DALLAS TEXAS 75243 WWW RWB NET 68 1 4 NOZZLES 3 8 EDUCTORS Reed Wells Benson amp Consulting Engine CENTRAL TOWER SUITE 1100 ae 972 788 4222 12001 NORTH CENTRAL EXPWY AX 972 788 0002 DALLAS TEXAS 752 4 MPT OUTLET 6 9 3 4 6 NOTE ALL NOZZLES AND EDUCTORS TO BE FACTORY PROVIDED AND INSTALLED ALL NOZZLES AND EDUCTORS ARE NOT SHOWN ON DETAIL PROJECT No 14109 00 SCHOOL HVAC SYSTEM REVISED DWG DATE 12 08 2014 UPGRADES LEE 1 4 NOZZLES 1 3 8 EDUCTORS ul MX S To SHEET No M1 05 MARY MOSS ELEMENTARY SCHOOL 1208 NEW MARKET MESQUITE TEXAS 75149 ALL COMPONENTS WILL BE INSTALLED BY MISD S CO
32. ROVIDED BY INSTALLING CONTRACTOR A B Install in complete accordance with manufacturer s instructions Provide for single point connection to the electrical service If oil pump is electric include the connection of the oil pump to a separately fused circuit Furnish and install necessary auxiliary water piping for oil cooling units and purge condensers Arrange piping for easy dismantling to permit tube cleaning Provide piping from chiller relief valve to the outdoors Size as recommended by the manufacturer Install flexible connection at chiller connection Mount each chiller on four inch 4 thick concrete housekeeping pad as shown with isolation pads as recommended and furnished by the manufacturer Install one 1 oxygen deprivation sensor or one 1 refrigerant specific sensor per machine along with other specified apparatus per the latest edition of ASHRAE Standard 15 3 4 MANUFACTURER S FIELD SERVICES A Manufacturer shall furnish a factory trained service technician at no additional charge to properly check out and start each unit Representative shall provide leak testing evacuation dehydration and charging of each unit as required A start up log shall be completed by the field start up technician to document the chiller s start up date and operating conditions which shall then be signed by an Owner s representative prior to commissioning of the chillers This document shall be reproduced but with
33. SD will not be responsible for shipping items back to vendors Successful proposer is to remove all packing and packaging material and debris from school property school dumpster is not to be used and to properly dispose of all discarded materials Successful Vendor s will be required to submit Material Safety Data Sheets for applicable item s Force Majeure If by reason of Force Majeure either party shall be rendered unable wholly or in part to carry out its obligations under this Agreement then such party shall give notice and full particulars of Force Majeure in writing to the other party within a reasonable time after occurrence of the event or cause relied upon and the obligation of the party giving such notice so far as it is affected by such Force Majeure shall be suspended during the continuance of the inability then claimed except as hereinafter provided but for no longer period and such party shall endeavor to remove or overcome such inability with all reasonable dispatch The term Force Majeure as employed herein shall mean acts of God strikes lockouts or other industrial disturbances act of public enemy orders of any kind of government of the United States or the State of Texas or any civil or military authority insurrections riots epidemics landslides lightning earthquake fires hurricanes storms floods washouts droughts arrests restraint of government and people civil disturbances explosions breakag
34. VDC signal from a Building Automation System different than the chiller manufacturer Unit control panel shall have a minimum of 40 preferably up to 80 characters displayed on the panel display Provide a LON or BacNET standardized communications protocol chip to communicate directly with the Energy Management System to be provided 20 7 oc0c0p Unit Mounted Starters 1 Motor starter shall be wye delta closed transition or solid state factory unit mounted starter Starter shall be pre piped and wired arranged for single point field electrical connection If starter is not wye delta manufacturer must specify the inrush current If solid state starter is supplied manufacturer shall provide two 2 additional hours of training specifically on the installation operation and maintenance of the starter Motor starter shall have NEMA 14A gasketed enclosure Enclosure shall be constructed of minimum 14 gauge steel Unit 45 mounted enclosures shall have ventilating louvers Each door or enclosure more than 48 high shall have three 3 pound vault type latches with padlockable handles Motor starters shall include incoming line provisions for the number and size cables shown on the Drawings Incoming line lugs shall be copper mechanical type Connection directly to the contactors is not permissible Contactors shall be sized properly for both chiller full load and locked rotor currents Contactors shall have double break
35. a contract with a school district must give advance notice to the district if the person or owners or operator of the business entity has been convicted of a felony The notice must include a general description of the conduct resulting in the felony Subsection b states a school district may terminate a contract with a person or business entity if the district determines that the person or business entity failed to give notice as required by Subsection a or misrepresented the conduct resulting in the conviction The district must compensate the person or business entity for services performed before the termination of the contract This disclosure is not required of a publicly held corporation Option A the undersigned agent for the firm name below certify that the information concerning notification of felony conviction has been reviewed by me and the following information furnished is true to the best of my knowledge select one answer Vendor Name Authorized Company Officer s Name printed Title A My firm is a publicly held corporation therefore this reporting requirement is not applicable Signature of Company Officer B My firm is not owned nor operated by anyone who has been convicted of a felony Signature of Company Officer C My firm is owned or operated by the following individual s who has have been convicted of a felony list names and titles Details of Conviction Signatu
36. aced at no cost 59 B Storage and protection of materials shall be in accordance with Owner furnished General Requirements PART 2 PRODUCTS 2 1 PREPACKAGED COOLING TOWER WATER PACKAGED SOLIDS SEPARATOR SYSTEM A Supply a packaged solids separator with pump and recovery system completely factory assembled The packaged system shall include a centrifugal vortex type separator purge recovery vessel integral pump with pre strainer and Schedule 80 PVC interconnecting piping The complete system shall be mounted on an epoxy coated steel skid The solids separator system shall be a dumbbell type design with a true tangential entry to ensure proper helical flow The separator shall be capable of removing separable suspended particulate from the system carrying fluid and have a solids performance rating of greater than 9096 efficient at 74 micron with a specific gravity of 2 6 or greater on a single pass The unit shall be equipped with inlet outlet gauges to monitor pressure drop and a manual air relief valve shall be provided at the top of the vessel The separator shall be fabricated of carbon steel rated at 150 psi working pressure The separator vessel shall be hydro tested at 1 5 times the design pressure and finished with a fusion bonded epoxy coating The recovery vessel shall be a filter bag type design The recovery vessel shall be equipped with a fiberfelt bag and stainless steel support basket The vessel shall incor
37. and installed under the supervision of a factory trained manufacturer s superintendent The manufacturer shall furnish all control and wiring diagrams for inclusion in the temperature control system shop drawings The electrical wire wiring and termination work shall be done under Division 16 for power wiring and Section 15901 for temperature control wiring coordinating all work with and under the supervision or instruction of the drive equipment manufacturer s representative A variable frequency controller shall be provided as indicated on the schedule for each cooling tower fan and for each individual pump as scheduled 3 2 SERVICE A B The manufacturer shall provide the following services performed by a factory authorized and fully trained representative only 1 Factory coordinated start up service 2 Training of Owner s personnel in basic trouble shooting 3 Training shall be on site and shall be a minimum of four 4 hour duration and shall be performed in addition to start up of system on a different day after completion of test and balance work 4 Visit the facility two 2 times during the warranty period once six 6 months after and once twelve 12 months after the warranty period to perform check out and maintenance of drives make any required adjustments and replace any components found to be defective Report to the Owner in writing outlining work performed Furnish spare parts list as a part of close out doc
38. ansactions item 2 does not apply For mortgage interest paid acquisition or abandonment of secured property cancellation of debt contributions to an individual retirement arrangement IRA and generally payments other than interest and dividends you are not required to sign the certification but you must provide your correct TIN See the instructions on page 3 Sign Signature of Here U S person gt Date gt General Instructions TA home mortgage interest 1098 E student loan interest 1098 T Section references are to the Internal Revenue Code unless otherwise noted Form 1099 C canceled debt Future developments Information about developments affecting Form W 9 such Form 1099 A acquisition or abandonment of secured property as legislation enacted after we release it is at www irs gov fw9 Use Form W 9 only if you are a U S person including a resident alien to Purpose of Form provide your correct TIN If you do not return Form W 9 to the requester with a TIN you might be subject An individual or entity Form W 9 requester who is required to file an information 2 L 7 to backup withholding See What is backup withholding on page 2 return with the IRS must obtain your correct taxpayer identification number TIN which may be your social security number SSN individual taxpayer identification By signing the filled out form you number ITIN adoption taxpayer identification number ATIN or employe
39. anufacturer to provide for chiller capacity control in response to the leaving chilled water temperature and by a remote Energy Management Control System Chiller control panel shall provide control of chiller operation and monitoring of chiller sensors actuators relays and switches Panel shall include controls to safely and efficiently operate the chiller Chiller control panel shall monitor safeties for motor starting and running time between compressor motor starts low chilled water temperature high condenser refrigerant pressure low evaporator refrigerant pressure and temperature evaporator and condenser water flows low oil flow high motor temperature and proper operation of unit controls and sensors Chiller safeties shall allow normal operation down to 40 Deg F chilled water supply temperature Chiller control panel shall be provided with the following dial type pressure gauges or have microprocessor display of the following a Evaporator refrigerant pressure b Condenser refrigerant pressure Chiller control panel shall be provided with a starts counter and non resettable running time meter as manufactured by Cramer Alternately this data can be displayed through the microprocessor controller 44 10 11 12 The front of the chiller control panel shall be capable of displaying the following Entering and Leaving Evaporator Water Temperature Deg F Entering and Leaving Condenser Water Temperature Deg F
40. as shown on your income tax return Name is required on this line do not leave this line blank 2 Business name disregarded entity name if different from above 3 Check appropriate box for federal tax classification check only one of the following seven boxes 4 Exemptions codes apply only to iis certain entities not individuals see Individual sole proprietor or C Corporation S Corporation Partnership Trust estate instructions on page 3 single me mber LS VERUM E Exempt payee code if any Limited liability company Enter the tax classification C C corporation S S corporation P partnership gt Note For a single member LLC that is disregarded do not check LLC check the appropriate box in the line above for Exemption from FATCA reporting the tax classification of the single member owner code if any Other see instructions Applies to accounts maintained outside the U S 5 Address number street and apt or suite no Requester s name and address optional 6 City state and ZIP code Print or type See Specific Instructions on page 2 7 List account number s here optional Part Taxpayer Identification Number TIN Enter your TIN in the appropriate box The TIN provided must match the name given on line 1 to avoid Social security number backup withholding For individuals this is generally your social securit
41. at such by whatever means he she may determine The District reserves the right to reject any and all proposals and to make awards on the individual items as they may appear to be advantageous to theDistrict and to waive all formalities in submitting proposals Vendors finding errors omissions or corrections that need to be made in the Specifications shall contact the Administrative Officer of Purchasing ten 10 days or as soon as possible before proposal is due This Request For Proposal and any resulting award s shall be interpreted within the laws of the State of Texas and the Uniform Commercial Code UCC In case of discrepancies between the laws of the State of Texas and the UCC the laws of Texas will prevail Venue for any legal action filed relative to this Request For Proposal or any resulting purchase orders shall be in Dallas County Texas In the event that any one or more of the provisions contained in the Request For Proposal or resulting purchase order shall be held by a court of competent jurisdiction to be invalid illegal or unenforceable such provision s shall not affect any other provision hereof and this Request For Proposal or any resulting purchase order shall be construed as if the invalid illegal or unenforceable provision s had never been contained herein To the fullest extent permitted by applicable law the Vendor and its agents partners employees and consultants collectively Indemnitors shall and
42. attempts at restart shall occur before the drive goes into a fault condition Provide a minimum of three 3 critical speed coast troughs for all fan drives Provide bus capacitors or equivalent feature for minimum 500 millisecond power loss ride through capabilities at a minimum of 5096 load Provide DC bus filter choke for maintaining high input power factor minimum displacement angle of 0 95 over the entire range of operating speeds and loads Minimum drive efficiency shall be 95 at 50 speed and 97 5 at 100 speed conditions without exception Drives shall be rated to withstand 11096 of full load amps of connected motor size for up to one 1 minute 60 seconds and 150 of rated full load amps instantaneously VFD s and bypasses shall each have a minimum short circuit rating of 65K 32 2 3 amps RMS where circuit breaker disconnects are employed and 100K amps RMS when drives employ fused disconnects all without additional input fusing The starting torque shall be 10096 available from 0 5 Hertz up to 60 Hertz output operating frequency Provide for DC injection braking to prevent fan wind milling at a start or stop command adjustable with current limited on all drives serving fans All programming memory shall be saved when the VFD power source is disconnected This shall require that all memory for the purpose be non volatile memory NV RAM Provide an automatic energy saving reduced voltage operation w
43. be amended altered or withdrawn without the recommendation of the Administrative Officer of Purchasing and the approval of the Mesquite Independent School District Board of Trustees All addenda will be issued via the district website at www mesquiteisd org depts purchasing All addenda if required will be posted on the aforementioned website at least seven 7 days before proposal opening It is the vendor s responsibility to check this website for addenda postings prior to submitting responses Proposers finding errors requests for additional information omissions or corrections that need to be made in the specifications shall contact the Administrative Officer of Purchasing ten 10 days or as soon as possible before proposal is due You may submit this information via fax to 972 882 7740 The undersigned agrees if this proposal is accepted to furnish any and all items upon which prices are offered at the price s and upon the Terms and Conditions contained in the specifications The period for acceptance of this proposal will be sixty 60 calendar days unless a different period is inserted by vendor The Mesquite Independent School District reserves the right to accept or reject in part or in whole any proposals submitted and to waive any technicalities and to award proposals in the best interest of the District PROPOSAL RESPONSE FORM PROPOSAL 2015 014 COOLING TOWER REPLACEMENT PROJECT EQUIPMENT ONLY To Mesquite Indepe
44. ch tappings fitted with pipe plugs for a casing air vent and drain on the pump volute Provide extended lubrication lines with universal grease gun stop check fittings for greasing bearings without requiring disassembly of the pump guards or other auxiliary devices All pumps and materials of construction shall be compatible with ethylene glycol 38 2 2 DOUBLE SUCTION PUMPS A Double suction pumps shall be bronze fitted horizontally split case type with flanged inlet and outlet Flanges shall be rated at 125 PSI Pumps shall be designed to allow complete removal of the impeller shaft and bearings Each pump and motor shall be mounted on a common baseplate and shall be connected through a spacer type flexible coupling The casing bearing bracket bearing cover and gland shall be of cast iron ASTM A 48 Class 25A The shaft shall be of stainless steel construction The impeller shaft sleeve and casing wearing rings shall all be made of bronze bronze fitted Seals shall be John Crane Type 21 or equivalent mechanical shaft seals Bearings shall be grease lubricated ball type selected to the carry radial and thrust loads required based on the scheduled requirements Pumps shall be as manufactured by Aurora PACO Bell amp Gossett or TACO 2 3 END SUCTION PUMPS CENTRIFUGAL PUMPS A End suction pumps shall meet all requirements same as Double Suction Pumps Pumps shall be frame mounted type PART
45. conditions to include initial power applied up to full speed and full load conditions Provide manual constant speed bypass switch with magnetic across the line starter to include overload relays and disconnects to allow the motor to open across the line in the event of VFD shutdown and to allow for a maintenance or service person to safely repair service the drive while the load is operated by the starter for pumps only Provide drive output isolation contactors and bypass contactors to accomplish this function Provide time delay in switch over circuitry to allow running motor to coast to stop when switched from drive to starter and vice versa Additionally provide an integral input power supply disconnect on all drives Bypass features shall include a control safety circuit terminal strip 115 VAC control transformer a Drive Bypass selector switch Hand Off Auto Switch and indicating LED lights for BYPASS ON Control Power ON and Drive RUNNING Either 3 contactor bypasses are acceptable or 2 contactor bypasses with service switch and fast acting fuses NEC approved disconnect switch to service drive will be allowed Variable frequency drives shall be of the pulse width modulation type provided the minimum number of pulses per output cycle is at least 5000 at 30 hertz and below to minimize motor heat and noise Provide auto restart package on each drive to restart the motor when power resumes after a power interruption A minimum of five 5
46. d high efficiency premium efficiency motors and be Reliance X E or Baldor Super E Motors shall be invertor duty rated Motors exposed to the moist air stream shall be the totally enclosed air over type TEAO with special moisture protection on the windings shafts and bearings All tower drives shall include a five 5 year parts only warranty To maintain the quality of the local environment the cooling tower shall be furnished with a low sound fan The thermal performance of the cooling tower when furnished with the low sound fan shall be certified by the Cooling Technology Institute in accordance with paragraph 1 2 of this specification Maximum sound pressure levels dB measured 50 feet 15240 mm from cooling tower operating at full fan speed shall not exceed the sound levels detailed below Location 63 125 250 500 1000 2000 4000 8000 dB A Discharge 54 54 54 51 45 43 46 35 53 Air Inlet 58 57 54 54 48 46 47 43 56 Cased Face 53 50 48 46 39 35 34 24 47 J Provide for each tower cell a single water inlet connection suitable for a welded pipe flange connection complete with a pre strainer assembly and means to balance flow rates to the warm water distribution basins In lieu of a single connection two 2 warm water basin flange connections with balancing valves is acceptable K Provide one 1 factory installed 10 Kw each electrical immersion pan heaters per basin
47. e or accidents to machinery pipelines or canals or other causes not reasonably within the control of the party claiming such inability It is understood and agreed that the settlement of strikes and lockouts shall be entirely within the discretion of the party having the difficulty 41 42 and that the above requirement that any Force Majeure shall be remedied with all reasonable dispatch shall not require the settlement of strikes and lockouts by acceding to the demands of the opposing party or parties when such settlement is unfavorable in the judgment of the party having the difficulty RIGHT OF SETOFF Mesquite Independent School District may at any time without prior written notice set off funds due and owing under this contract and apply same in payment of any obligation of any nature due and owing to Mesquite Independent School District by the Contractor a Do you pay taxes in Mesquite ISD b Are you current on your property tax obligations owed Mesquite ISD It is not the policy of the Mesquite Independent School District to award contracts based solely on low bid proposal The following criteria shall be used by the Mesquite ISD to evaluate the overall best value a The purchase price b The reputation of the vendor and of the vendor s goods or services The quality of the vendor s goods or services d The extent to which the goods or services meet the district s needs e The vendors past relat
48. ed and reference the Mesquite Independent School District Purchase Order number Vendors are not to unilaterally apply duplicate payments or overpayments against unrelated open invoices without the District s explicit authorization 26 27 28 29 30 31 32 Upon notification of potential selections for award the person or entity submitting this proposal must give notice to the district if the person or an owner or operator of the business entity has been convicted of a felony The notice must include a general description of the conduct resulting in this conviction of a felony This requirement does not apply to a publicly held corporation The district shall have the right to cancel for default all or any part of the undelivered portions of this order if the contractor breaches any of the terms hereof including warranties of the contractor or if the contractor becomes insolvent or commits acts of bankruptcy Such right of cancellation is in addition to and not in lieu of any other remedies which the District may have in law or equity The performance under this order may be terminated in whole or in part by the District in accordance with this provision Termination hereunder shall be effected by the delivery to the contractor of a Notice of Termination specifying the extent to which performance of work under the order is terminated and the date upon which termination becomes effective Such right of termination is in
49. ed on equipment scheduled in each case Should the Proposer request a substitution for equipment of another make that requires more space in 25 any critical dimension the Proposer shall submit together with other submittal data on the equipment prints of drawings indicating how the equipment may be installed indicating room for servicing and revisions in piping or ducting and any other details necessary for the Engineer to form a judgment as to the suitability of the substitute material as to performance suitability for the space and other variables Duties of certain equipment items horsepower of driving motors and electrical characteristics are scheduled for equipment items of a particular make in each case Should requests for a substitute material be accepted which has other requirements that would involve allied equipment or other portions of work the Proposer shall be responsible for all modifications required at no change in contract price As examples 1 If an accepted A C Unit has a brake horsepower requirement above the motor horsepower scheduled the Proposer shall be responsible for providing a larger motor and heavier drive and any change in size of the protective device conduit run and conductors serving that motor The latter shall be extended through an individual branch protective device and branch circuit on through the panel feeder feeder protective device etc Structural steel members are indicated to provide sup
50. ere to the statutes as set forth in the Uniform Commercial Code as last amended in 1990 by the American Law Institute in the National Conference of Commissioners on Uniform State Laws Reference Uniform Commercial Code 1990 official text We are unable to send out copies of bid tabulations There are many factors involved but our current policy is that all opened bids are available for viewing in 33 34 35 36 37 38 39 40 the purchasing office but no tabulations are sent out Thank you in advance for not requesting copies of bid tabulations Questions in regard to this proposal must be submitted to the Administrative Officer of Purchasing for clarification No smoking or use of any tobacco products is permitted on school property Purchase Orders will serve as the award instrument s against this request for proposal Orders will be placed as items are approved for purchase and funds become available The Purchase Order number must be clearly identified on each carton label and or delivery ticket Otherwise the shipment is subject to being refused and returned to the vendor at the vendor s expense If problems with quality or workmanship arise on items received the supplying vendor is responsible for replacing any or all items at no cost to the Mesquite Independent School District The supplying vendor will also be responsible for returning to the designated campus to pick up the items in question Mesquite I
51. he installing Contractor with parts furnished by the equipment manufacturer END OF SECTION 40 SECTION 15684 ROTARY SCREW WATER COOLED CHILLERS 100 450 TONS PART 1 GENERAL 1 1 RELATED REQUIREMENTS A Comply with Owner furnished General Requirements and referenced documents Comply with all other Division 15 Sections as applicable Refer to other Divisions for coordination of work with other portions of work 1 2 SYSTEM DESCRIPTION A The work shall include the furnishing and installing of rotary screw water cooled chilling units together with all connecting piping all required controls starters accessories insulation hangers supports and appurtenances as indicated herein and as shown and scheduled on the Drawings Chillers shall be completely factory assembled and delivered to the job site for final field installation or to an Owner approved warehouse until the equipment is ready to be accepted on the project site by the Installing Contractor The Owner will pay for delivery costs from the warehouse to the site to include unloading and setting of equipment onto the structural base site assuming it is ready The equipment specified herein is being pre purchased by the Owner and will be assigned to the Installing Contractor who shall install the equipment and provide the warranty services 1 3 QUALITY ASSURANCE A B All equipment and materials shall be new and of the best quality All
52. hen the drive has been de energized no command to run for a pre determined time frame adjustable This shall be the equivalent to a sleep mode function ELECTRONIC COMPONENTS QUALITY ASSURANCE A All electronic components or devices to include transistors diodes resistors integrated circuits capacitors etc shall be 10096 inspected and load tested including temperature cycling 0 Deg C to 65 Deg C and ambient high temperature 65 Deg C load tested according to MIL STD 8813B All printed circuit boards shall be tested under a temperature cycling 0 Deg C to 65 Deg C load test and then functionally tested via fault finder bench equipment prior to unit installation All final assemblies shall be tested at full load with application of line to line and line to ground bolted faults and drive shall trip electronically without device failure After all tests have been performed each drive shall undergo a 24 hour burn in test The controllers shall be burned in at 10096 inductive or motor load for 24 hours without an unscheduled shut down After the burn in cycle is complete each VFD shall be put through a 30 minute cycling motor load test before inspection and shipping 33 Certification that all of the testing above has been performed shall be provided by the drive manufacturer PART 3 EXECUTION 3 1 INSTALLATION A The motors and drives approved shall be shipped to the job site as scheduled
53. hout written acceptance 5 Only one request for substitution for each product will be considered If substitution is not accepted Proposer shall provide specified product 6 Engineer will determine acceptability of any and all substitutions F It is fully the Proposer s responsibility to assemble and submit sufficient technical information to fully illustrate that the material or equipment proposed for substitution is equal or superior as the Engineer is under no obligation to perform the service for the Proposer The proposal shall be accompanied by manufacturer s engineering data specification sheet and a sample if practical or if requested or specified In no event shall a proposal for substitution be cause for delay of work This shall include a detailed comparison to each product specification paragraph G Should a substitution be accepted under the above provisions and should the substitution prove defective or otherwise unsatisfactory for the intended service within the warranty period the Proposer shall replace the substitution with the equipment or material specified and on which the specifications required him to base his proposal H No substitutions will be considered contingent upon pending certification and rating agency approvals Such certifications and ratings shall be in effect at the time of bidding 1 2 EQUIPMENT SIZES AND REQUIREMENTS A Space allocations in machinery and mechanical equipment spaces are bas
54. ified value if the sound level exceeds that specified without such treatment where required to meet the overall individual net acoustical rating specified herein Compressors with oil separator and discharge piping shall be individually enclosed by an acoustic sound blanket where required to meet the overall individual unit acoustical rating specified herein Sound blankets shall be made of one layer of acoustical absorbent textile fiber minimum 5 8 inch thickness one layer of anti vibrating heavy material with a minimum thickness of 1 8 and both of these layers enclosed with two 2 outer sheets of welded PVC reinforced for exposure to high ambient temperatures and treated for ultra violet resistance Enclosure shall be factory mounted Treat other refrigerant piping and system components with sound reduction materials to limit noise level of machine to the lowest possible with standard and optional as required factory installed options This is required on all units without exception Provide hot gas discharge mufflers for each compressor that are individually tuned for each specific compressor and operating conditions that optimize acoustical attenuation of compressor noise This is required on all units without exception Provide factory furnished field installed neoprene isolator pads to minimize noise and vibration transmission from this equipment This is required on all units without exception G Acceptable Manufacturers 1
55. iminal histories are prohibited from serving at a school district Definitions Covered employees Employees of a contractor or subcontractor who have or will have continuing duties related to the service to be performed at the District and have or will have direct contact with students The District will be the final arbiter of what constitutes direct contact with students Disqualifying criminal history Any conviction or other criminal history information designated by the District or one of the following offenses if at the time of the offense the victim was under 18 or enrolled at a public school a a felony offense under Title 5 Texas Penal Code b an offense for which a defendant is required to register as a sex offender under Chapter 62 Texas Code of Criminal Procedure or c an equivalent offense under federal law or the laws of another state On behalf of Contractor certify that None of the employees of Contractor and any subcontractors are covered employees as defined above If this box is checked further certify that Contractor has taken precautions or imposed conditions to ensure that the employees of Contractor and any subcontractor will not become covered employees Contractor will maintain these precautions or conditions throughout the time the contracted services are provided Some or all of the employees of Contractor and any subcontractors are covered employees f this box is checked further
56. ionship with the district f The impact on the ability of the district to comply with the laws and rules relating to historically under utilized businesses g The total long term cost to the district to acquire the vendors goods and Services h Fora contract for goods and services other than goods and services related to telecommunications and information services building construction and manintenance or instructional materials whether the vendor or the vendor s ultimate parent company or majority owner 1 Has its principal place of business in this state or 2 Employs at least 500 persons in this state and i Any other relevant factor specifically listed in this Request For Proposal Per Texas Education Code Subchapter B Sec 44 031 b VENDOR PROFILE Company Name Company Address Website Address Telephone Numbers To place orders To check on orders FAX Contacts Corporate contact for this proposal Name Address City State Zip Phone Fax Email Local contact for this proposal Name Address City State Zip Phone Fax Email Number of years company has been in business under this name Other company names used with dates from to Remit to Address if different than above Address City State Zip Form W 9 Request for Taxpayer Give Form to the P n ter D t Hev Dacomber 2010 Identification Number and Certification cine Department of the Treasury Internal Revenue Service 1 Name
57. ired to interface with the temperature control system adjustable for direct or reverse acting Provide internal drive limits to prevent drive from exceeding 60 Hertz or dropping below minimum drive speed when the input signal exceeds 20ma or drops below 4ma respectively Output contactor for positive motor disconnect Plug in tester card and meter unless all trouble shooting can be accomplished via control panel display and keypad Recommended replacement modules per operations and maintenance manuals Non resettable elapsed time meter to indicate run time of connected load motor not power on to drive Input line fuses Class J Automatic shut off for overload conditions Output thermal overloads one in each phase 115 VAC Control Power transformer with fused primary where required for the external control circuit Coordinate requirement with Section 15901 Field adjustable input signal offset bias control device Auxiliary contacts for connection to an Energy Management System Provide up to 2 analog outputs 3 digital inputs and 3 output relays Refer to Section 15901 Controls and Instrumentation Standardized communications interface card suitable for connection to the specified Energy Management System EMS an embedded Building Automation System protocol for network communications Refer to Specification Section 15901 for requirements 31 21 Electronic Ground Fault Protection shall be provided for all operating
58. is Form CIQ as necessary A Is the local government officer named in this section receiving or likely to receive taxable income other than investment income from the filer of the questionnaire liest Yes No B Is the filer of the questionnaire receiving or likely to receive taxable income other than investment income from or at the direction of the local government officer named in this section AND the taxable income is not received from the local governmental entity Yes C Is the filer of this questionnaire employed by a corporation or other business entity with respect to which the local government officer serves as an officer or director or holds an ownership of 10 percent or more Yes No D Describe each employment or business relationship with the local government officer named in this section Signature of person doing business with the governmental entity Date Adopted 06 29 07 22 MESQUITE INDEPENDENT SCHOOL DISTRICT MARY MOSS ELEMENTARY SCHOOL CENTRAL PLANT AND ENERGY MANAGEMENT SYSTEM UPGRADES EQUIPMENT PRE PURCHASE PACKAGE SALA 2 5 2 WU B 2 KENNETH M FULK 5 ie ds 2 262 ie 555 9 Prepared by REED WELLS BENSON AND COMPANY 12001 NORTH CENTRAL EXPRESSWAY SUITE 1100 DALLAS TEXAS 75243 PHONE 972 788 4222 FAX 972 788 0002 F 2176 RWB Project No 14109 00 December 8 2014 SECTION 15010 GENERAL PROVISIONS PART 1 GENER
59. ise at the L A Berry Support Complex at 2133 N Beltline Road Mesquite Texas 75150 unless otherwise stated on purchase order Non palletized freight shall be unloaded inside the Warehouse or School building Vendor is responsible for providing material handling equipment when delivering to schools or departments Vendor must advise freight line as to this requirement Pick up and delivery will be made between the hours of 7 00 A M and 2 00 P M Monday through Friday excluding school holidays Unless arrangements are made otherwise with the Administrative Officer of Purchasing or as otherwise specified on the Proposal form Title and Risk of Loss The title and risk of loss of the goods shall not pass to Mesquite ISD until Mesquite ISD actually receives and takes possession of the goods at the point or points of delivery Mesquite ISD will not accept responsibility for processing freight damage claims occurring prior to receipt including concealed damage of goods Vendor will provide detailed information to the District for each item delivered model number serial number product equipment description Invoices shall be sent directly to the Mesquite Independent School District Accounts Payable 405 East Davis Mesquite Texas 75149 Payments are processed after the Business Office has been notified that the items have been received in good condition and no unauthorized substitutions have been made Invoices must detail the items deliver
60. l opening of this proposal Vendor Street Address City State Zip Phone Fax Proposer Signature Proposer print name Company Officer Signature Company Officer print name Title Suspension or Debarment Certificate Non Federal entities are prohibited from contracting with or making sub awards under covered transactions to parties that are suspended or debarred or whose principals are suspended or debarred Covered transactions include procurement for goods or services equal to or in excess of 100 000 00 Contractors receiving individual awards for 100 000 00 or more and all sub recipients must certify that the organization and its principals are not suspended or debarred By submitting this offer and signing this certificate the proposer e Certifies the owner operator has not been convicted of a felony except as indicated on a separate attachment to this offer in accordance with Sec 44 034 Texas Education Code and e Certifies that no suspension or disbarment is in place which would preclude receiving a federally funded contract under the Federal OMB A 102 Common Rule Sec 36 Vendor Name Authorized Company Official s Name Authorized Company Official s Signature Email Address Date Felony Conviction Notice Senate Bill 1 passed by the State of Texas Legislators Section 44 034 Notification of Criminal History Subsection a states a person or business entity that enters into
61. lar fashion and be stored in a dry clean location The drive shall be wrapped with a low efficiency polyester media filter by the installing contractor when power is supplied to the drive and when operated during the construction period Filter shall be cleaned or replaced regularly to prevent overheating of the drive and electronics All materials or equipment damaged during transit handling or installation shall be replaced at no cost to the Owner The installing contractor shall receive this equipment at the site install them supervise start up by the manufacturers representative oversee Owner Training and assist in providing close out documentation to include warranties PART 2 PRODUCTS 2 1 GENERAL A The variable frequency controllers furnished shall convert 208 volt Refer to and verify from Plans and submittals 10 to 596 three phase 60 Hertz 396 utility power phase to phase imbalance to adjustable voltage and frequency 196 three phase A C power for stepless motor control from 29 1096 to 11096 of base speed under variable torque load All general options and modifications shall mount within the standard adjustable frequency motor controller enclosure unless otherwise specified or in an integrally mounted expansion module Variable frequency drive systems shall not cause any radio television computer or other communication system interference within the building in which it is installed All drives
62. lf Contained Breathing Apparatus SCBA shall be designed for personnel rescue operations and for emergency work performance in a Machine Room environment 2 SCBA shall be NIOSH approved and meet Federal Standard 30 CFR Part Il for open circuit SCBA s 3 Air Cylinders shall be designed for a pressure of 4500 psig be manufactured of Kevlar and have a rating for a 60 minute supply of air Cylinders shall have the following accessories Comfortable wide strap harness Remote air pressure gauge Low air supply warning Low maintenance pneumatics requiring no calibration Companion face mask Face mask hose and fittings Mask mounted demand control valve Neoprene secure seal face mask Shatterproof visor suitable for working in with scratch resistant coating j Communications option package with voice amplification system 65dB to 100dB k Provide carrying case user manual and poster and a complete maintenance manual 4 Provide one 1 SCBA which shall be mounted outside of the Chiller Room where designated by the Owner or where shown on the Drawings 5 Acceptable Manufacturer International Safety Instruments ISI Vanguard 2079 oc0gcp Each refrigeration system shall be provided with an easily legible permanent sign that is securely attached easily accessible and indicates the following 1 and address of the installer 2 Proper name and amount of refrigerant 3 Lubricant identify and amou
63. ll portions of the advanced motor protection system can be furnished in the chiller control panel The starter and control panel shall be designed to operate in temperatures up to 104 Deg F 40 Deg C All field supplied wires bus bars and fittings shall be copper only The following starter options shall be provided a Ammeters and Voltmeters Three 3 ammeters shall be provided one 1 per phase Ammeters shall be calibrated so the inrush current can be indicated Three 3 voltmeters shall be provided each reading a phase to phase voltage Alternately this may be OSP 46 furnished in the chiller microprocessor control panel b U L Approval c Provide a single point electrical connection such that only one electrical circuit serves this equipment The control transformer shall be factory wired internal to the wiring enclosure segregate main wiring from control wiring and be fed from this single source d A non fused disconnect switch shall be provided with the chiller F Acoustical Treatment 1 The maximum weighted sound pressure level acceptable shall be 70 0 without exception based on being measured one 1 meter from the side of the unit 1 5 meters above the floor in accordance with the most recent version of ARI Standard 575 Compressor sound blankets and or a complete machine acoustical enclosure whatever combination is necessitated will be required to reduce sound levels to within the spec
64. ndent School District Rusty Talbot Administrative Officer Purchasing 800 East Kearney Mesquite Texas 75149 From Company Name Address City State Zip Area Code amp Telephone Number Fax Number the undersigned as the owner or legally authorized representative of the above named company by signing the following statement agree that have READ and UNDERSTAND all of the Instructions and Specifications contained herein and that if accepted by the Mesquite Independent School District all of the provisions are part of a binding contract between the Mesquite Independent School District and our company also certify that this proposal is made without previous understanding agreement or connection with any person firm or corporation making a proposal for the same contract and is in all ways fair and without collusion or fraud Owner or Legally Authorized Representative Title Signature Date Mesquite Independent School District Terms and Conditions Notice to Responsible Vendors Items below apply to and become a part of terms and conditions of the proposal unless superseded by attached terms and supplemental conditions or specifications in which case attached conditions will prevail 1 It is not the policy of Mesquite Independent School District to purchase on the basis of low bids alone quality and suitability to purpose being the controlling factors it being understood that the purchaser reserves the right to arrive
65. ness and the condenser tubes shall be made of copper and have a minimum 0 028 wall thickness Factory insulation shall be 1 2 thick foam type insulation and shall 43 cover all low temperature surfaces to include the evaporator water boxes suction elbow refrigerant suction piping flow chamber Provide 3 4 drain and vent connections in each evaporator and condenser water box Provide an evaporator liquid level sensor sight glasses on the electronic expansion valves and optical oil eye sensor in the oil separators Ratings shall be with a 0 0001 fouling factor on the water side of the cooler and 0 00025 fouling factor on the water side of condenser tubes The KW power draw shall not exceed the scheduled KW per ton of cooling capacity at full load with R134a refrigerants Chiller performance shall be rated in accordance with the latest edition of ARI Standard 550 Provide factory furnished thermal dispersion flow switches for each of the evaporators and condensers for proving flow prior to energizing the chiller Pump Out System 1 2 Units operating with R 410a or R 134a refrigerants shall have the capability of storing the entire refrigerant charge in the condenser Pump out systems will not be allowed as a substitute for this requirement Controls T Chillers shall be controlled by a local unit mounted microprocessor controller A dedicated chiller control panel shall be supplied with each chiller by the chiller m
66. nt 4 Field test pressure applied Each refrigeration system that contains more than 100 pounds of refrigerant shall be provided with durable signs that have letters not less than 0 5 inch in height and identify the following Valves or switches that control refrigerant flow Switches that control ventilation Switches that control operation of the refrigeration compressor s The kind of refrigerant or secondary coolant contained in the exposed piping outside the machinery room as applicable ee d 50 5 Valves or piping adjacent to valves shall be identified in accordance with ANSI A13 1 Scheme for Identification of Piping Systems All of the components specified above will be furnished as a part of the chiller package and will require installation by the firm that installs the chiller or a subcontractor thereof PART 3 EXECUTION 3 1 DELIVERY AND PROTECTION A Deliver all equipment and accessories to on Owner approved warehouse where the chillers shall be stored until the site is ready for them to be delivered The Owner shall have these items delivered to the site and set in place where designated by the Installing Contractor All equipment shall be handled carefully to avoid damage and be protected from exposure to the weather and dirt All equipment shall be examined upon delivery to the site and evidence of abuse damage or exposure to weather and dirt shall be grounds for refusal to accept individual pieces of
67. of tower cooling capacity performance in accordance with the Cooling Tower Institute CTI Standard STD 201 SUBMITTALS A Product Data Submit complete manufacturer s descriptive literature and installation instructions indicating all accessories furnished and capacities of equipment B Shop Drawings 1 Submit in accordance with Owner furnished General Requirements 54 2 Indicate on shop drawings the projected calendar date for delivery of equipment to the project site 3 Provide cut sheets on all specified components and accessories 4 Provide recommended support details of the manufacturer of the towers 5 Provide wiring diagrams for motors heaters and other accessories requiring electrical power supply and control 6 Provide detailed motor performance and efficiency data 1 5 PRODUCT HANDLING A Cover and protect material in transit and at site Material not properly protected and stored and which is damaged or defaced during transit or storage shall be rejected and replaced at no cost Storage and protection of materials shall be in accordance with Owner furnished General Requirements The cooling towers shall be delivered to Crocker Crane from the factory per the Owner s direction Owner responsibility The equipment will then be delivered from Crocker Crane Contractor responsibility and installed by the contractor to include the cooling tower complete with field installed accessories The Owner will pay to t
68. on load or line side 4 Shorting between terminals and all short circuiting 5 Being disconnected and or make disconnect on a coast down of equipment 6 able to be energized pick up a motor load with a spinning fan wheel as an example Variable frequency drives shall be the pulse width modulated PWM type as manufactured by Reliance ABB Danfoss Graham or Yaskawa All drives shall be of the same manufacturer unless the drive is furnished integral with a factory made piece of equipment 30 All motors connected to drives shall have individual dedicated drives Two 2 or more motors shall not be controlled by one 1 drive 2 2 VARIABLE FREQUENCY DRIVE FEATURES A Drives shall include as a minimum the following 1 2 3 4 gum 10 11 12 13 14 15 16 17 18 19 20 Converter inverter regulator with replaceable plug in circuit boards Hand off auto selector switch or buttons Manual speed frequency selection Independently tuned acceleration and deceleration ramps 0 600 seconds 6 66 Hz controlled speed range Annunciator for remote indication of fault conditions Store up to the last 10 faults that have occurred in the drive control panel All protective circuits and features as recommended by the manufacturer Frequency meter mounted in the door or on the enclosure or displayed on control panel display Electronic 4 20ma input signal receiver with transceiver as requ
69. overflow drain and fittings The basin area under the wet deck surface shall be sloped toward the center section Provide a Type 304 stainless steel bottom outlet with Type 304 perforated stainless steel strainers for each cell Additionally provide one 1 brass float operated make up valve with large diameter plastic float for each tower cell total of two 2 arranged for easy accessibility and easy adjustment Additionally provide a Type 304 stainless steel pipe nipple connection at each cold water basin for a field piped manual quick fill Also provide a factory installed side or bottom outlet as indicated on the Drawings beveled for welding and suitable for a flanged connection of the bypass valve piping with internal baffling to eliminate turbulence of the operating water level Hot water distribution basin shall be open gravity type constructed of Type 304 stainless steel Distribution weirs and plastic metering orifices shall be provided to assure even flow of water over the wet deck surfaces Provide hinged lift off or sliding warm water distribution basin covers with full size grip handle made of Type 304 stainless steel to prevent debris and algae build up in the basin Hinges shall be Type 304 stainless steel The wet deck fil inlet louver and drift eliminators shall consist of waveformed sheets of polyvinylchloride which shall be impervious to rot decay fungus or biological attack Drift loss shall be limited to less than 0 29
70. ower components Provide Type 304 stainless steel weir gates for each twin cell tower to isolate individual cold water basins Further provide for cooling tower bypass and equalizer connections in the cold water basin as required per the construction documents Warrant all structural components fan supports fans fan shafts bearings sheaves and fan motors for five 5 years from Substantial Completion parts only Additionally provide a full one 1 year parts and labor warranty following Substantial Completion for the entire unit Contractor shall provide all warranties on Owner furnished pre purchased equipment All piping and nozzles serving the sweeper piping system that are inside the tower shall be provided and installed under this Section of the Specifications and installed at the factory of the cooling tower manufacturer Refer to specification section 15723 PART 3 EXECUTION 3 1 DELIVERY AND PROTECTION A Include delivery of all equipment specified to the site as indicated in Owner furnished General Requirements All equipment shall be handled carefully to avoid damage and be protected from exposure to the weather and dirt All equipment shall be examined upon delivery to the site and evidence of abuse damage or exposure to weather and dirt shall be grounds for refusal to accept individual pieces of equipment Rejected items shall be replaced promptly at no cost END OF SECTION 58 SECTION 15723 COOLI
71. pecific application Unless indicated otherwise use 120 VAC devices Maximum operating current shall not exceed 0 25 amps at 120 VAC Devices shall be suitable for mounting on a flush wall box utilizing a concealed wiring adaptor kit or for direct wall mounting Devices shall be UL listed for indoor and outdoor applications Each device shall deliver up to 110 decibels at ten 10 feet The speaker portion of the device shall be adjustable to allow directional control of the signal Provide two 2 audible alarm devices Devices shall be an Edwards Adaptatone Visual Alarm Devices 1 2 QI Visual Alarm Devices shall be heavy duty industrial beacons capable of producing bright flashing lights All devices shall be of weatherproof design fully enclosed and be made of a heavy duty cast zinc base suitable as a junction box with shatter resistant Lexan lenses Lenses shall have special optics for efficient light dispersal Lamps shall have bayonet bases on bulbs with yellow or amber lenses Devices shall be UL listed for indoor and outdoor applications Devices shall be suitable for surface mounting pipe mounting or mounting to a four inch 4 octagon box flashing lights shall be suitable for 120 and have a maximum operating current of 0 25 amps Provide two 2 visual alarm devices Visual Alarm Devices shall be Edwards Adaptabeacon flashing lights 49 Self Contained Breathing Apparatus 1 Se
72. porate a hinged t bolt cover and shall be serviceable during system operation via isolation valves An indicator device sensing pressure differential shall identify when unit needs maintenance and a manual air relief valve shall be provided at the top of the vessel The recovery vessel shall be fabricated of carbon steel rated at 150 psi working pressure The vessel shall be hydro tested at 1 5 times the design pressure The vessel shall be finished with a fusion bonded epoxy exterior coating and internal lining The system pump shall be a close couple end suction type sized for the proper flow rate of the package The pump shall be of cast iron construction and include a cast iron pre strainer with a perforated stainless steel 1 8 mesh basket The pump shall be provided with a premium efficiency TEFC motor Purging of the accumulation chamber shall be continuous and regulated by 60 an automatic flow control valve Purged solids will be captured by the recovery vessel and clean fluid returned to the system inlet eliminating liquid loss All interconnection piping shall be Schedule 80 PVC Schedule is specified for piping internal to skid The separator shall be equipped with automatic controls consisting of a motor controller with start stop device with overload and short circuit protection mounted in a NEMA 4X fiberglass enclosure The unit shall have a single electrical hook up point 2 2 SUCTION CENTRIFUGAL PUMP A
73. ports for certain specific sizes and weights of equipment Should a substitution request involve other equipment the spacing of the supports shall be varied to suite the equipment Should the weight or size of a proposed substituted item of equipment require additional supporting steel members the Proposer shall include documentation of the additional supports in the request for substitution and install them at no change in contract price if the substitution is accepted Various large apparatus to be installed may require that the apparatus be installed prior to the installation of portions of structural walls or door frames Coordinate the installation of these items to insure that no demolition of general construction is necessary for equipment installation or that the apparatus does not have to be disassembled for installation 1 3 EQUIPMENT STANDARDS A All basic materials and equipment shall be standard catalog products of a reputable manufacturer and shall essentially duplicate equipment which has been in satisfactory service for at least one 1 year First of a kind new technology devices will not be considered Accessory equipment that is required to make a complete and functioning system that is not of the same manufacturer furnishing the basic materials 26 or equipment shall carry the guarantee of the basic material or equipment manufacturer and repair and replacement parts shall be available through normal trade channel
74. questionnaire is being filed in accordance with Chapter 176 Local Government Code Date Received by a person who has a business relationship as defined by Section 176 001 1 a with a local governmental entity and the person meets requirements under Section 176 006 a By law this questionnaire must be filed with the records administrator of the local governmental entity not later than the 7 business day after the date the person becomes aware of facts that require the statement to be filed See Section 176 006 Local Government Code A person commits an offense if the person knowingly violates Section 176 006 Local Government Code An offense under this section is a Class C misdemeanor 1 Name of person who has a business relationship with local governmental entity 2 L Check this box if you are filing an update to a previously filed questionnaire The law requires that you file an updated completed questionnaire with the appropriate filing authority not later than the 7 business day after the date the originally filed questionnaire becomes incomplete or inaccurate 3 Name of local government officer with whom filer has employment or business relationship Name of officer This section item 3 including subparts A B C amp D must be completed for each officer with whom the filer has an employment or other business relationship as defined by Section 176 001 1 a Local Government Code Attach additional pages to th
75. r 1 Cert identification number EIN to report on an information return the amount paid to you or other amount reportable on an information return Examples of information returns include but are not limited to the following 2 Certify that you are not subject to backup withholding or Form 1099 INT interest earned or paid 3 Claim exemption from backup withholding if you are a U S exempt payee If applicable you are also certifying that as a U S person your allocable share of any partnership income from a U S trade or business is not subject to the ify that the TIN you are giving is correct or you are waiting for a number to be issued Form 1099 DIV dividends including those from stocks or mutual funds Form 1099 MISC various types of income prizes awards or gross proceeds withholding tax on foreign partners share of effectively connected income and Form 1099 B stock or mutual fund sales and certain other transactions by 4 Certify that FATCA code s entered on this form if any indicating that you are brokers exempt from the FATCA reporting is correct See What is FATCA reporting on Form 1099 S proceeds from real estate transactions page 2 for further information Form 1099 K merchant card and third party network transactions Cat No 10231X Form W 9 Rev 12 2014 11 CERTIFICATE RESIDENCY Texas Government Code Chapter 2252 Subchapter A Nonresident Bidders makes it necessary for the
76. ransport the cooling towers to the site including unloading and setting of the cooling towers onto their final locations PART 2 PRODUCTS 2 1 PRODUCTS A The cooling towers shall consist of two 2 factory assembled twin cell induced draft stainless steel crossflow type towers with single or double side entry as indicated on the Drawings and vertical air discharge as manufactured by Baltimore Aircoil Company Each twin cell tower assembly shall consist of two cells and be equal to a Baltimore Model No XES15E 1285 07FN2 Series 1500 packaged steel tower capable of cooling 610 GPM from 95 Deg F to 85 Deg F with 78 Deg F wet bulb temperature This results in a total cooling effect of 203 tons at 3 GPM per ton The tower shall be capable of withstanding a wind velocity of 100 MPH without damage General Construction of all structural steel angles channels and all bolts nuts and washers shall be of all heavy gauge Type 304 stainless steel All steel panels and surface elements shall be made of heavy gauge Type 304 stainless steel The casing panels shall all be made of Type 304 stainless 55 steel The cold water collection basin floor and sides shall be constructed of heavy gauge Type 304 stainless steel panels and structural members All seams shall be factory welded to ensure water tight construction and be warranted against leaks for five 5 years Basin shall be self cleaning and have a center section with drain
77. re of Company Officer FINGERPRINT REQUIREMENTS If a contractor vendor s staff will be on a school site where students will be present then contractor vendor must comply with Texas Education Code Chapter 22 This is required for all Texas Public Schools If contractor vendor s staff will not be on school district property when students are present then the contractor vendor may not have covered employees Mesquite ISD recommends all contractors vendors consult with their legal counsel for guidance in compliance with this law If you have questions on compliance with this section of the Texas Education Code please contact the Texas Department of Public Safety Non Criminal Justice Unit Access and Dissemination Bureau FAST FACT at NCJU txdps state tx us and you should send an email identifying you as a contractor vendor to a Texas Independent School District The Texas Department of Public Safety s telephone number is 512 424 2474 The Texas Education Code Chapter 22 Section 22 0834 statutory language may be found at http www statutes legis state tx us TEXAS EDUCATION CODE CHAPTER 22 CONTRACTOR CERTIFICATION FOR CONTRACTOR EMPLOYEES Introduction Texas Eduation Code Chapter 22 requires entities that contract with school districts to provide services to obtain criminal history record information regarding covered employees Contractors must certify to the district that they have complied Covered employees with disqualifying cr
78. s defined by describing a proprietary product or by using the name of a manufacturer or brand name the term or equal if not inserted shall be implied The specified article or material shall be understood as indicating the type function minimum standard of design efficiency and quality desired It shall not be construed as to exclude other manufactured products of comparable quality design and efficiency Specifications received from vendors that are different from the original requirements must meet or exceed original proposal specifications to be considered equivalent MISD reserves the right to make the final decisions as to comparable items An article or material which is shipped and is not equal shall be returned to the supplier transportation charges collect The term As Specified or A S will not be accepted If bidding on a make or model other than specified bidder is to list make and model of item being bid and must state any deviations from the item specified The burden of proof of compliance with this specification will be the responsibility of the vendor Samples of items which are not as specified must be available to the District within 72 hours after our request Prices proposed should be F O B Destination Freight Prepaid Seller to pay freight charges bear freight charges own freight in transit and file claims if any Proposals received after the time and date specified will not be considered When proposal is
79. s locally 14 GUARANTEE A The guarantee provision of this specification requires prompt replacement of all defective workmanship and materials occurring within one year of final job acceptance Substantial Completion or as defined by Extended Warranty Contracts This includes all work required to remove and replace the defective item and to make all necessary adjustments to restore the entire installation to its original specified operating condition and finish at the time of acceptance The Proposer shall also guarantee that the performance of all equipment furnished and installed under this Division of the Specifications shall be at least equal to the performance as called for in the specifications and as stated in the equipment submittals Should there be indication that the equipment and installation is not producing the intended conditions the Proposer shall make further tests as the Owner s Representative may direct to demonstrate that the equipment installed meets the specifications and is delivering the capacity specified or called for on the Drawings If there is any indication that the equipment does not meet the specified quantities the Proposer shall at his expense institute a program to demonstrate the adequacy of the installation This program shall include all necessary testing and testing equipment Should the Proposer not have the equipment or technical skill to perform the tests it shall be his responsibility to employ
80. sed by the Owner and will be assigned to the Installing Contractor who shall install the equipment and provide the warranty services 1 3 QUALITY ASSURANCE A B All equipment and materials shall be new and of the best quality All equipment and materials shall be installed in a workmanlike manner by experienced mechanics and as recommended by the pump manufacturer 1 4 SUBMITTALS A Product Data Submit manufacturer s descriptive literature and installation instructions together with pump curves and head calculations Head calculations required when piping installation and equipment utilized is significantly different from that shown as determined by the Engineer Shop Drawings Submit in accordance with Owner furnished General Requirements 36 Submittals to include pump and motor efficiencies at full load and at 60 Hertz For variable speed applications submit on the same at 15 Hertz 30 Hertz and 45 Hertz 1 5 PRODUCT HANDLING A Cover and protect pumps in transit and at site Pumps not properly protected and stored and which are damaged or defaced during construction shall be rejected Cover suction and discharge openings to prevent entrance of dirt and debris until final piping connections are made Storage and protection of materials shall be in accordance with Section 15010 The installing contractor shall receive this equipment at the site install the pumps supervise and perform start up oversee
81. shall meet the requirements of Radio Frequency Interference RFI above 7 MHz as specified by FCC regulations Part 15 Subpart J Class A devices All drives shall include EMI RFI filters The service voltage distortion shall be limited to 596 peak to peak All drives shall comply with interference and distortion requirements contained herein If after units are installed and distortion or interference is traced back to the VFD Units equipment manufacturer shall install isolation transformers or input line reactors at no cost to the Owner to eliminate the objectionable interference All PWM drives shall have a minimum 5 line impedance via a 3 rated input 3 phase line reactor combined with a 3 DC bus reactor or a 5096 rated A C input line reactor without exception D C bus reactors only are not a suitable substitute All drive systems shall be capable of installation in long term operation in a mechanical room environment with a temperature range of 32 degrees F to 104 degrees F a humidity level of 096 up to 9596 non condensing relative humidity and be rated for the altitude applicable to the job site Enclosures shall have a minimum NEMA 1 rated metal enclosure unless indicated otherwise elsewhere herein VFD s shall be capable of withstanding the following conditions without failure or mechanical damage 1 Being disconnected under full load 2 Single phasing or phase failure on both Input and Output 3 Loose wiring
82. ther information attached hereto all such deviations must be listed on this page Please reference the line number provide complete and detailed conditions and any additional information attach additional pages as necessary Vendors must list all specifications for item s proposed that differ from any specifications brands listed in the RFP MISD will be the sole judge to determine if deviations are acceptable in meeting the needs of MISD and participating members Reference on this page the line number and deviation NO DEVIATIONS In the absence of any deviations entry on this form the Proposer assures MISD of their compliance with the Terms Conditions Specifications and information contained in this proposal Are there deviations from the specifications circle Yes No All Proposers MUST COMPLETE this page SIGN amp RETURN with proposal or proposal may be considered NON RESPONSIVE Our proposal is submitted according to Deviations listed above OR No Deviations Non Collusion Clause The undersigned affirms that they are duly authorized to execute this contract that this company corporation firm partnership or individual has not prepared this proposal in collusion with any other proposer and that the contents of this proposal as to prices terms and conditions of proposal have not been communicated by the undersigned nor by any employee or agent to any other person engaged in this type of business prior to the officia
83. umentation 3 3 WARRANTIES A Provide a three 3 year parts and labor warranty for all drives beginning at Substantial Completion Warranty shall also include travel and lodging expenses for warranty repair personnel as required All units shall be installed and checked out to be operating as recommended by the manufacturers authorized and factory trained start up agent before warranty begins This includes completion of a factory authorized representative start up report Submit completed start up reports with close out 34 documents B All warranty work shall be performed through the installing contractor as if they purchased the equipment directly END OF SECTION 35 SECTION 15540 CENTRIFUGAL PUMPS PART 1 GENERAL 1 1 RELATED REQUIREMENTS A Comply with Owner furnished General Requirements and referenced documents Comply with all other Division 15 Sections as applicable Refer to other Divisions for coordination of work with other portions of work 1 2 SYSTEM DESCRIPTION A Provide water circulating pumps of the type rotational speed and arrangement indicated Each pump shall be rated to deliver the capacity indicated in the tabulation on the Schedule against the head of the system in which it operates Pumps specified in this section of specifications shall handle chilled and condenser water at no higher than 250 Deg F or lower than 10 Deg F The equipment specified herein is being pre purcha
84. vel setting for each sensor e Alarm indication f Select button to scroll sensor information and to set up system parameters g System malfunction indicator h Auto Zero self calibration system 2 Alarm Panels shall be expandable to add up to three 3 additional sensors Provide locking panel cover Cover shall be a NEMA Type 1 enclosure System shall automatically calibrate itself System shall be capable of monitoring a minimum of six 6 separate gas sensors each to as low as 1 PPM 6 Provide output alarm relays to Energize Ventilation System Energize Visual Alarms Energize Audible Alarms Report alarm condition to Energy Management System SD C 48 7 8 e Minimum of two 2 other relays for other alarms and safety controls Provide fault indication on panel face Acceptable manufacturers a General Analysis Corporation SAM I or approved equals by b Yokogawa HGM 300 Audible Alarm Devices 1 Audible Alarm devices shall be heavy duty industrial tone selectable stand alone signaling devices capable of producing volume controlled high decibel tones Provide up to ten 10 distinctive field selectable tones via solid state microprocessor circuitry for each device All devices shall be of weatherproof design fully enclosed and be made of heavy duty zinc cast construction with a baked enamel finish Devices shall be available in 24 Volt DC 120 VAC or 240 VAC as required for the s
85. y number SSN However for resident alien sole proprietor or disregarded entity see the Part instructions on page For other entities it is your employer identification number EIN If you do not have a number see How to get a TIN on page 3 or Note If the account is in more than one name see the instructions for line 1 and the chart on page 4 for Employer identification number guidelines on whose number to enter Certification Under penalties of perjury certify that 1 The number shown on this form is my correct taxpayer identification number or am waiting for a number to be issued to me and 2 am not subject to backup withholding because a am exempt from backup withholding or b have not been notified by the Internal Revenue Service IRS that am subject to backup withholding as a result of a failure to report all interest or dividends or c the IRS has notified me that am no longer subject to backup withholding and 3 am a U S citizen or other U S person defined below and 4 The FATCA code s entered on this form if any indicating that am exempt from FATCA reporting is correct Certification instructions You must cross out item 2 above if you have been notified by the IRS that you are currently subject to backup withholding because you have failed to report all interest and dividends on your tax return For real estate tr

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